KR20140039997A - Heating and hot water supply - Google Patents

Abstract

(assignment)
This invention provides the technique which can prevent deterioration of the components which comprise a heat pump in the heating apparatus which uses the heat pump endothermic from air | atmosphere as a heat source.
(Solution)
The heating device disclosed in the present specification includes a heat pump that absorbs heat from the atmosphere and heats the fruit, a tank for storing the fruit, a heat storage pure environment path for circulating the fruit between the heat pump and the tank, and heats the fruit. A heating terminal for heating, a heating net environment path for circulating fruit between the tank and the heating terminal, and condition determination means for determining whether or not the conditions related to starting and stopping of the heat pump are satisfied, and the heat pump When it is determined that the above conditions related to starting and stopping of the tank are satisfied, the heat storage amount increasing means for increasing the heat storage amount of the tank is provided.

Description

HEATING UNIT AND HOT WATER SUPPLY UNIT}

The present invention relates to a heating device and a hot water supply device.

Patent Document 1 discloses a heating device. This heating apparatus is a heat pump that heats the fruit by absorbing heat from the atmosphere, a tank storing the fruit, and heats the fruit by radiating heat. A heating terminal is provided. Between a heat pump and a tank, it is connected by the circulation path | route for heat storage which circulates a fruit. Between the tank and a heating terminal, it is connected by the circulation path for heating which circulates a fruit.

Japanese Patent Application Laid-Open No. 2003-240341

Depending on the heat dissipation amount at the heating terminal and the heat amount at the heat pump, a situation in which the heat pump repeats starting and stopping may occur. If the start and stop of the heat pump are repeated frequently, deterioration of the components constituting the heat pump is accelerated.

In addition, the same problem occurs in a hot water supply apparatus that heats water using a heat pump that absorbs heat from the atmosphere, stores the heated water in a tank, and supplies hot water from the tank as needed. Also in this case, if the start and stop of the heat pump are repeated frequently, deterioration of the components constituting the heat pump is accelerated.

The present specification provides a technique for solving the above problems. The present specification provides a technique capable of preventing deterioration of components constituting the heat pump in a heating device or a hot water supply device using a heat pump that absorbs heat from the atmosphere as a heat source.

The heating apparatus disclosed by this specification is a heat pump which heats | sucks a fruit from the air | atmosphere by heat | atmosphere, the tank which stores a fruit, A heat storage circulating path for circulating the fruit between the heat pump and the tank, a heating terminal for dissipating the fruit to heat the heating, and between the tank and the heating terminal. Heating circulating path for circulating fruit in the oven, condition determination means for determining whether or not the conditions related to starting and stopping of the heat pump are satisfied, and starting and stopping of the heat pump. And when it is determined that the above conditions related to are satisfied, heat storage amount increasing means for increasing the heat storage amount of the tank is provided.

In the above heating apparatus, when the conditions related to starting and stopping of the heat pump are satisfied, the time from when the heat pump is stopped to start again after the heat storage amount of the tank is increased by means of the heat storage amount increasing means. Can be long. Thereby, the situation where a heat pump frequently starts and stops can be prevented and deterioration of the components which comprise a heat pump can be prevented.

The heating apparatus further includes a boiling-up temperature thermistor for detecting the temperature of the fruit sent from the heat pump to the tank, and the boiling temperature while the heat pump is operating. The operation of the heat pump may be controlled such that the temperature detected by the thermistor approaches the boiling set temperature. In such a heating apparatus, the heat storage amount increasing means can be configured to increase the heat storage amount of the tank by changing the boiling set temperature to a higher temperature.

According to the heating device described above, it is possible to realize an increase in the heat storage amount of the tank by a simple switching of the control.

Alternatively, the heating apparatus further includes a plurality of tank thermistors disposed at different heights for detecting the temperature of the fruit inside the tank, and when the heat pump is operating, When the temperature detected by the tank thermistor reaches the boiling completion temperature, the operation of the heat pump can be controlled to stop the operation of the heat pump. In such a heating apparatus, the heat storage amount increasing means can be configured to increase the heat storage amount of the tank by transferring the tank thermistor serving as the reference to a tank thermistor disposed further below the tank. have.

According to the heating device described above, it is possible to realize an increase in the heat storage amount of the tank by a simple switching of the control.

The above-mentioned heating apparatus can use various things as conditions related to starting and stopping of the said heat pump. For example, as a condition related to the start and stop of the heat pump, a condition that the start frequency of the heat pump reaches a predetermined number of times within a unit period can be used. Alternatively, as a condition related to starting and stopping of the heat pump, a condition that the time from starting to stopping of the heat pump is equal to or less than a first predetermined period can be used. Alternatively, as a condition related to the start / stop of the heat pump, a condition that the time from the start of the heat pump to the start after the stop is restarted can be used. Alternatively, as a condition related to the start / stop of the heat pump, a condition that the sum of the number of start times of the heat pump in the past unit period is more than a predetermined number of times can be used.

All of the above conditions suggest that the heat pump may repeatedly start and stop frequently. Therefore, when these conditions are satisfied, the heat storage amount of the tank is increased to prevent the heat pump from frequently starting and stopping, thereby preventing deterioration of the components constituting the heat pump.

Alternatively, as a condition related to the start / stop of the heat pump, the energy loss calculated based on the start / stop condition of the heat pump predicted when the heat storage amount of the tank is increased does not increase the heat storage amount of the tank. If not, the condition that the energy loss calculated based on the start / stop state of the heat pump predicted can be used.

Increasing the amount of heat storage in the tank reduces the number of starts and stops of the heat pump, but the energy loss due to the start of the heat pump is reduced, but the energy loss due to heat dissipation from the tank and the energy loss due to the operation of the heat pump. Tends to increase. From the viewpoint of reducing the total energy loss by using the above conditions, it is possible to determine whether the heat storage amount of the tank is increased to reduce the start / stop frequency of the heat pump.

The present specification also discloses a hot water supply device. The hot water supply device includes a heat pump for absorbing water from the atmosphere, a tank for storing water, a heat storage circulating path for circulating water between the heat pump and the tank, and water supply to the tank. A water supply path, a hot water supply path for supplying hot water from the tank, condition determination means for determining whether or not a condition related to starting and stopping of the heat pump is satisfied, and the heat pump When it is determined that the above conditions related to starting and stopping of the tank are satisfied, the heat storage amount increasing means for increasing the heat storage amount of the tank is provided.

In the above-mentioned hot water supply apparatus, when the condition related to the start and stop of the heat pump is satisfied, the time until the heat storage amount of the tank is increased by means of the heat storage amount increasing means, after which the heat pump is stopped and then started again Can be long. Thereby, the situation where a heat pump frequently starts and stops can be prevented and deterioration of the components which comprise a heat pump can be prevented.

Fig. 1 is a diagram schematically showing the configuration of the hot water supply heating system 10 of the first embodiment.
2 is a view showing the flow of heat when heating the heat pump unit 20 while being operated.
3 is a diagram showing the flow of fruit when the temperature of the fruit sent from the tank 30 to the heating path 56 for heating is high with respect to the temperature of the fruit required by the heating terminal 90.
FIG. 4 is a diagram showing the flow of fruit when the temperature of the fruit sent from the tank 30 to the heating path 56 is low with respect to the temperature of the fruit required by the heating terminal 90.
5 is a flowchart of a process of reducing the starting frequency of the heat pump unit 20.
6 is a diagram schematically showing the configuration of the hot water supply heating system 100 of the second embodiment.

In one Embodiment of this invention, it is preferable to use water or antifreeze for the fruit for heating.

In one Embodiment of this invention, it is preferable to use the combustion apparatus which burns fuels, such as a flammable gas, as an auxiliary heat source machine which heats the fruit for heating or the water for hot water supply.

(Example)

(Embodiment 1)

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. 1 shows a hot water heating and heating system 10 of the first embodiment. As shown in FIG. 1, the hot water heating system 10 includes a heat pump unit 20, a tank unit 28, a hot water heating unit 80, And a heating terminal 90 are provided.

The heat pump unit 20 is a heat pump that heats up the fruit sent from the tank unit 28 by absorbing heat from the atmosphere. Although not shown in the figure, the heat pump unit 20 includes a compressor, a radiator, an expansion valve, an evaporator, and a refrigerant net environment path for sequentially connecting them. In addition to this, a fan for blowing air to an evaporator, a motor for driving the same, and the like are also provided. In the refrigerant circulation path, carbon dioxide, which is a refrigerant, is charged. Since the detail of the heat pump unit 20 is the same as a well-known thing, description is abbreviate | omitted here. In addition, the heat pump unit 20 is provided with a circulation pump 22 for circulating the fruit between the heat pump unit 20 and the tank unit 28. The operation of the components of the heat pump unit 20 including the circulation pump 22 is controlled by a controller 21. The heat pump unit 20 is also provided with an outside air temperature thermistor 26 for detecting the outside air temperature. The outside temperature thermistor 26 is connected to the controller 21.

The tank unit 28 is provided with the tank 30 which stores a fruit. The fruit of this example is an antifreeze. The tank 30 of this embodiment is an example but has a capacity of 30 liters. The tank 30 is provided with a plurality of tank thermistors 42a, 42b, 42c along the height direction. In this embodiment, the tank thermistor 42a is provided at the top of the tank 30 (for example, 10 liters from the top of the tank 30), and the tank thermistor 42b is in the middle of the tank 30. It is provided in the part (for example, 15 liters from the top of the tank 30), and the tank thermistor 42c is located at the bottom of the tank 30 (for example, 20 liters from the top of the tank 30). Installed in The tank thermistors 42a, 42b, 42c are connected to the controller 54. The controller 54 can grasp | ascertain the heat quantity stored in the tank 30 from the temperature detected by the tank thermistor 42a, 42b, 42c. Moreover, the thermistor which detects the temperature of the fruit in the tank 30 is not limited to said three, 4 or more may be provided, and may be provided in the upper part and the lower part of the tank 30 two. The controller 54 also includes a counter that counts the number of starts of the heat pump unit 20.

The tank 30 is connected to the heat pump unit 20 via a heat storage path 34 and a heat storage return path 32. The heat storage path 34 is a conduit for feeding fruit from the tank 30 to the heat pump unit 20, and is connected to the bottom of the tank 30. The heat storage return path 32 is a conduit returning the fruit from the heat pump unit 20 to the tank 30 and is connected to the top of the tank 30. The heat storage path 34 and the heat storage path 32 constitute a circulation path for circulating the fruit between the heat pump unit 20 and the tank 30. The circulation pump 22 is provided in the circulation path. Although the circulation pump 22 of this embodiment is built in the heat pump unit 20, the position of the circulation pump 22 is not specifically limited, For example, it may be provided in the tank unit 28. As shown in FIG.

In the heat storage path 34, a manual valve 24 and a heat storage path thermistor 44 are provided. Similarly, a passive valve 24 and a heat storage ear thermistor 46 are also provided in the heat storage hearth 32. The regenerative regenerative thermistor 44 and the regenerative ear thermistor 46 are connected to the controller 54. The controller 54 can grasp the temperature of the heat before heating by the heat pump unit 20 from the temperature detected by the heat storage furnace thermistor 44. Based on the temperature detected by the heat storage ear thermistor 46, The temperature of the fruit after heating by the heater 20 can be grasped. The regenerative thermistor 46 may be referred to as a boiling temperature thermistor which detects boiling-up temperature by the heat pump unit 20.

The heating terminal 90 heats the fruit from the tank 30 by radiating heat. The heating terminal 90 is, for example, a panel heater, a panel radiator, a floor heating, a fan convector, a hot water room air conditioner. The heating terminal 90 is connected to the tank 30 via the heating route 56 and the heating return route 60. The heating path 56 is a conduit for sending fruit from the tank 30 to the heating terminal 90 and is connected to the top of the tank 30. The heating return path 60 is a conduit returning the fruit from the heating terminal 90 to the tank 30, and is connected to the bottom of the tank 30. The heating path 56 and the heating return path 60 constitute a circulation path for circulating the fruit between the tank 30 and the heating terminal 90.

A drain pipe 50 including a manual valve 52 is connected to the heating return path 60. In addition, an expansion tank 70 is provided in the heating return path 60. In this embodiment, since the circuit circulating the fruit is a closed circuit, an expansion tank 70 is prepared to absorb the thermal expansion of the fruit. Further, the position where the expansion tank 70 is connected is not limited to the heating return path 60, and may be connected to the heating forward path 56 or another path, for example.

The heating front passageway 56 is connected to the heating terminal 90 via the hot water heating unit 80. The hot water heating unit 80 is a combustion type heat source machine and includes two burners 84 and 86 for burning combustible gas. One burner 84 is for hot water supply, and heats the constant water flowing through the hot water supply pipe line 82. The other burner 86 is for heating, and heats the heat flowing through the heating furnace 56 as necessary. In addition, the hot water supply heating unit 80 includes a controller 88. The hot water supply heating unit 80 is provided with a circulation pump 87 for circulating the fruit between the heating terminal 90 and the tank unit 28. The position at which the circulation pump 87 is provided is not limited to the hot water supply heating unit 80, but may be provided in the tank unit 28, for example. Further, a burner outlet thermistor 89 is provided downstream from the burner 86 of the heating path 56. The burner outlet thermistor 89 is connected to the controller 88. According to this structure, when the temperature of the fruit sent to the heating terminal 90 via the heating path 56 is too low, the heating terminal 90 is heated by heating the fruit flowing through the heating path 56 by the burner 86. It can raise the temperature of the fruit being sent to.

A heating path 56 and a heating return path 60 are connected via a bypass path 64. Thereby, a part or all of the fruit which flows through the heating return path 60 is comprised so that it may be sent to the heating path 56 without passing through the tank 30. As shown in FIG. In addition, a mixing valve 66 is provided at a branching position of the heating return path 60 and the bypass path 64, and the heating path 56 for heating from the heating return path 60 through the bypass path 64. The ratio of the flow rate of the fruit sent to the heating path and the flow rate of the fruit sent to the heating path 56 for heating via the tank 30 from the heating return path 60 for heating can be adjusted. The mixing valve 66 is connected to the controller 54, and the operation thereof is controlled by the controller 54. According to this structure, when the temperature of the fruit sent to the heating terminal 90 via the heating path 56 is too high, the fruit after heat dissipation flowing through the heating return path 60 joins the fruit flowing through the heating path 56. By doing so, the temperature of the fruit sent to the heating terminal 90 can be reduced.

In the heating path 56, a first heating path thermistor 48 and a second heating path thermistor 58 are provided. The first heating path thermistor 48 is provided upstream from the joining point at which the bypass path 64 joins the heating path 56, so that the fruit is sent from the tank 30 to the heating path 56 for heating. Detect the temperature. The second heating path thermistor 58 is provided downstream from the joining point where the bypass path 64 joins the heating path 56, and the fruit is sent from the tank 30 to the heating path 56 for heating. The temperature after the fruit sent from the bypass path 64 to the heating path 56 for heating is mixed. The thermistor 62 is provided in the heating return path 60. The heating return thermistor 62 detects the temperature of the fruit flowing in the heating return path 60. The first heating path thermistor 48, the second heating path thermistor 58, and the heating return path thermistor 62 are connected to the controller 54. The controller 54 controls the operation of the mixing valve 66 based on the detected temperatures of the first heating path thermistor 48, the second heating path thermistor 58, and the heating return thermistor 62. The temperature of the fruit sent to 90 can be adjusted to the desired temperature.

2 shows the flow of fruit when heating while driving the heat pump unit 20. As shown in FIG. 2, the high temperature fruit is sent to the heating terminal 90 from the upper part of the tank 30 via the heating path 56. As shown in FIG. The high temperature fruit which is sent to the heating terminal 90 is returned to the lower part of the tank 30 via the heating return path 60 after heat dissipation in the heating terminal 90. On the other hand, the low temperature fruit is sent to the heat pump unit 20 through the heat storage path 34 from the lower part of the tank 30. The low temperature fruit which is sent to the heat pump unit 20 is returned to the upper portion of the tank 30 through the heat storage return path 32 after being heated in the heat pump unit 20. In this manner, the operation of circulating heating the fruit of the tank 30 by the operation of the heat pump unit 20 is also referred to as boiling operation of the tank. The controller 21 of the heat pump unit 20 controls the operation of the compressor, the expansion valve, and the circulation pump 22 of the heat pump unit 20 so that the detection temperature of the thermistor 46 approaches the boiling set temperature by the regenerative ears. do. The boiling set temperature is set, for example, by a remote controller (not shown) connected to the controller 88 or the like.

3 shows the flow of the fruit when the temperature of the fruit sent from the tank 30 to the heating path 56 for heating is high with respect to the temperature of the fruit required by the heating terminal 90. In this case, the mixing valve 66 is controlled to increase the flow rate of the fruit which is sent from the heating return path 60 to the heating return path 56 through the bypass path 64, and thus the tank 30 from the heating return path 60. Decreases the flow rate of the fruit sent to the heating path (56). Thereby, the temperature of the fruit sent to the heating terminal 90 from the heating path 56 can be adjusted to the temperature of the fruit which the heating terminal 90 requires. Even when the temperature of the fruit required by the heating terminal 90 decreases, it is possible to respond quickly to a change in the demand in the heating terminal 90 without changing the heating capacity of the heat pump unit 20.

4 shows the flow of the fruit when the temperature of the fruit sent from the tank 30 to the heating path 56 is low with respect to the temperature of the fruit required by the heating terminal 90. In this case, the fruit flowing through the heating path 56 is heated by the burner 86. By adjusting the amount of heating in the burner 86, the temperature of the fruit sent from the heating path 56 to the heating terminal 90 can be quickly adjusted to the temperature of the fruit required by the heating terminal 90. Even when the temperature of the fruit required by the heating terminal 90 rises, it is possible to respond quickly to a change in the demand in the heating terminal 90 without changing the heating capacity of the heat pump unit 20.

In the hot water heating and heating system 10 of the present embodiment, the heat pump unit is operated when the heating operation is performed in the heating terminal 90 and the detection temperature of the tank thermistor 42a is equal to or lower than a predetermined temperature (for example, 75 ° C). Start (20). Thereby, the boiling operation of the tank 30 using the heat pump unit 20 is performed.

The hot water heating and heating system 10 of the present embodiment stops the heat pump unit 20 when the heating operation in the heating terminal 90 ends when the heat pump unit 20 is operating. Even when the heating operation in the heating terminal 90 is continued, the detection temperature of the tank thermistor 42b exceeds a predetermined temperature (for example, 75 ° C) or the detection temperature of the heat storage path thermistor 44. When the temperature exceeds a predetermined temperature (for example, 70 ° C.), it is determined that boiling of the tank 30 is completed, and the hot water supply heating system 10 stops the heat pump unit 20.

Depending on the situation of the heating load, the heat pump unit 20 may repeatedly start and stop. If the heat pump unit 20 repeatedly starts and stops frequently, the deterioration of components constituting the heat pump unit 20 is accelerated. Here, the hot water supply heating system 10 according to the present embodiment starts and stops the heat pump unit 20 when the heat pump unit 20 may be repeatedly started and stopped by the processing shown in FIG. 5. The treatment to reduce.

In step S2, the time (count start time) of starting the count of the start frequency of the heat pump unit 20 is determined.

In step S4, counting is waited until the count start time is reached.

In step S6, it is determined whether the starting frequency predicted between the unit periods (for example, one day) of the heat pump unit 20 is more than a predetermined number (for example, ten times). Prediction of the start-up frequency in the unit period of the heat pump unit 20 can be made based on past performance, for example. Specifically, for example, the starting frequency of the heat pump unit 20 in the immediately preceding unit period (for example, the previous day) is the starting frequency of the heat pump unit 20 in this unit period. It can be used as a predicted value of. If the predicted starting number is more than a predetermined number of times (YES in step S6), the processing proceeds to step S8. If the predicted starting number is less than the predetermined number of times (NO in step S6), the processing proceeds to step S10.

In step S8, the boiling set temperature is raised to a predetermined temperature range (for example, 10 ° C). Thereby, in the subsequent boiling operation using the heat pump unit 20, the amount of heat that can be accumulated in the tank 30 can be increased.

In step S10, the count of the start frequency of the heat pump unit 20 is started. After this, the starting frequency increases every time the heat pump unit 20 starts.

In step S12, it is determined whether or not the start frequency of the heat pump unit 20 has reached the first predetermined number of times (for example, ten times). When the start frequency of the heat pump unit 20 reaches the first predetermined number of times (YES in step S12), the process proceeds to step S22, and the subsequent start of the heat pump unit 20 is prohibited. Thereby, the starting frequency of the heat pump unit 20 can be prevented from exceeding the first predetermined number of times in this unit period, and the starting frequency of the heat pump unit 20 can be reduced. When the start frequency of the heat pump unit 20 does not reach the first predetermined number of times (NO in step S12), the process proceeds to step S14.

In step S14, it is determined whether or not the start frequency of the heat pump unit 20 reaches the second predetermined number of times (for example, five times). The second predetermined number is less than the first predetermined number. When the start frequency of the heat pump unit 20 reaches the second predetermined number of times (YES in step S14), the process proceeds to step S20, where the boiling set temperature of the heat pump unit 20 is set to a predetermined temperature range (eg, 10 ° C.). Thereby, the heat storage amount for the tank 30 can be increased, and the timing at which the heat pump unit 20 is started can be delayed after that. The starting frequency of the heat pump unit 20 can be reduced. In addition, it is possible to suppress the occurrence of the situation where the start of the heat pump unit 20 reaches the first predetermined number of times and the start of the heat pump unit 20 is prohibited, thereby increasing the utilization ratio of the heat pump unit 20. . When the start frequency of the heat pump unit 20 does not reach the second predetermined number of times (NO in step S14), the process proceeds to step S16.

In step S16, it is determined whether the time from the start of the heat pump unit 20 to the stop (hereinafter also referred to as HP on time) is equal to or less than the first predetermined period (for example, one hour). The short HP on time means that the heat pump unit 20 is started and stopped in a short period of time, and that the heat pump unit 20 may be frequently started and stopped repeatedly thereafter. When the HP on time is less than or equal to the first predetermined period (YES in step S16), the routine advances to step S20 to raise the boiling set temperature of the heat pump unit 20 to a predetermined temperature range (for example, 10 占 폚). Thereby, the heat storage amount for the tank 30 can be increased, and the timing at which the heat pump unit 20 is started can be delayed after that. The starting frequency of the heat pump unit 20 can be reduced. When the HP on time exceeds the first predetermined period (NO in step S16), the process proceeds to step S18.

In step S18, it is determined whether the time from the start of the heat pump unit 20 until it is stopped and started again (hereinafter also referred to as HP on / off time) is less than or equal to the second predetermined period (for example, two hours). To judge. The short HP on / off time means that the start of the heat pump unit 20 is repeated in a short period of time, and it means that the heat pump unit 20 may repeat frequent start and stop thereafter. . When the HP on / off time is equal to or less than the second predetermined period (YES in step S18), the process proceeds to step S20, where the boiling set temperature of the heat pump unit 20 is increased by a predetermined temperature range (for example, 10 ° C). Let's do it. Thereby, the heat storage amount for the tank 30 can be increased, and the timing at which the heat pump unit 20 is started can be delayed after that. The starting frequency of the heat pump unit 20 can be reduced. When the HP on / off time exceeds the second predetermined period (NO in step S18), the process proceeds to step S24.

In step S24, it is determined whether the elapsed time from the count start time has reached the unit period. If the elapsed time from the count start time has not reached the unit period (NO in step S24), the processing returns to step S12. When the elapsed time from the count start time reaches the unit period (YES in step S24), the process of Fig. 5 ends.

In the hot water supply heating system 10 of the present embodiment, when the starting number of the heat pump units 20 in the unit period reaches the first predetermined number of times, the start of the subsequent heat pump unit 20 is prohibited. Accordingly, it is possible to suppress the situation where the heat pump unit 20 frequently starts and stops repeatedly. According to the hot water supply heating system 10 described above, it is possible to prevent deterioration of components constituting the heat pump unit 20.

In the hot water heating and heating system 10 of the present embodiment, when the starting frequency of the heat pump unit 20 in the unit period is equal to or greater than the second predetermined number of times, the boiling set temperature of the heat pump unit 20 is raised. By raising the boiling set temperature, high temperature fruit is accumulated by the tank 30, and the heat storage amount of the tank 30 is increased. Thereby, after that, the period from the stop of the heat pump unit 20 to the restart can be lengthened to suppress the situation in which the heat pump unit 20 frequently starts and stops repeatedly. According to the hot water supply heating system 10 described above, it is possible to prevent deterioration of components constituting the heat pump unit 20. In addition, it is possible to suppress the occurrence of a situation where the start frequency of the heat pump unit 20 reaches the first predetermined number of times and the start of the heat pump unit 20 is prohibited. The utilization ratio of the energy-efficient heat pump unit 20 can be increased.

In the hot water heating and heating system 10 of the present embodiment, when the HP on time is less than or equal to the first predetermined period, the boiling set temperature of the heat pump unit 20 is increased. The short HP on time means that the start and stop of the heat pump unit 20 is short, and the heat pump unit 20 may likewise repeat the start and stop in a short time thereafter. do. Here, in the hot water heating and heating system 10 of the present embodiment, when the HP on time is less than or equal to the first predetermined period, the boiling set temperature of the heat pump unit 20 is increased to increase the heat storage amount of the tank 30. As a result, it is possible to suppress a situation in which the heat pump unit 20 frequently starts and stops repeatedly by lengthening the period from stopping the heat pump unit 20 to restarting. According to the hot water supply heating system 10 described above, it is possible to prevent deterioration of components constituting the heat pump unit 20.

In the hot water heating and heating system 10 of the present embodiment, when the HP on / off time is less than or equal to the second predetermined period, the boiling set temperature of the heat pump unit 20 is raised. The short HP on / off time means that the start, stop, and restart of the heat pump unit 20 are performed in a short period of time, and the heat pump unit 20 repeats starting and stopping in a short time thereafter. It means that there is concern. Here, in the hot water supply heating system 10 of the present embodiment, when the HP on / off time is less than or equal to the second predetermined period, the boiling set temperature of the heat pump unit 20 is raised to increase the heat storage amount of the tank 30. . As a result, it is possible to suppress a situation in which the heat pump unit 20 frequently starts and stops repeatedly by lengthening the period from stopping the heat pump unit 20 to restarting. According to the hot water supply heating system 10 described above, it is possible to prevent deterioration of components constituting the heat pump unit 20.

In addition, in step S8 and step S20, instead of raising the boiling set temperature of the heat pump unit 20, the thermistor used for the boiling completion determination of the tank 30 is made into the thermistor located further below the tank 30. It is good also as a structure which changes (for example, transfers from tank thermistor 42b to tank thermistor 42c). Also in this case, the heat storage amount of the tank 30 after the boiling operation by the heat pump unit 20 can be increased. As a result, it is possible to suppress a situation in which the heat pump unit 20 frequently starts and stops repeatedly by lengthening the period from stopping the heat pump unit 20 to restarting.

In step S6, instead of determining whether to increase the heat storage amount of the tank 30 based on the predicted starting number of the heat pump, the energy loss predicted when the heat storage amount of the tank 30 is increased. And the energy loss predicted when the heat storage amount of the tank 30 is not increased, and the heat storage amount of the tank 30 can be determined based on the comparison result. The energy loss predicted below is energy loss due to starting of the heat pump unit 20, energy loss due to heat dissipation from the tank 30, and energy loss due to operation of the heat pump unit 20. The case of considering this will be described.

The energy loss L1 due to the start of the heat pump unit 20 is calculated by the following.

L1 = starting energy of the heat pump unit 20 X predicted starting frequency of the heat pump unit 20

Usually, when the boiling set temperature of the heat pump unit 20 is increased to increase the heat storage amount of the tank 30, the starting energy of the heat pump unit 20 increases but the starting frequency of the heat pump unit 20 decreases. Therefore, energy loss L1 is reduced.

The energy loss L2 due to heat dissipation from the tank 30 is calculated as follows.

L2 = amount of heat radiation per unit time from the tank 30 X stop time of the heat pump unit 20 X number of stops of the heat pump unit 20 to be predicted

Usually, when the boiling set temperature of the heat pump unit 20 is raised to increase the heat storage amount of the tank 30, the energy loss L2 increases because the heat radiation amount from the tank 30 increases.

The energy loss L3 due to the operation of the heat pump unit 20 is calculated by the following.

L3 = boiling heat in the heat pump unit 20 ÷ operation efficiency of the heat pump unit 20

Usually, when the boiling set temperature of the heat pump unit 20 is increased to increase the heat storage amount of the tank 30, the boiling heat amount of the heat pump unit 20 increases and the operation efficiency of the heat pump unit 20 is increased. Since this is lowered, the energy loss L3 increases.

The sum of the above energy losses L1, L2, L3 is calculated for each of the case where the heat storage amount of the tank 30 is increased and when the heat storage amount of the tank 30 is not increased. Increasing the heat storage amount increases the heat storage amount of the tank 30 when it is determined that total energy loss is low. With such a configuration, it is possible to judge whether or not the number of start and stop times of the heat pump is reduced from the viewpoint of reducing total energy loss.

(Second Embodiment)

Fig. 6 shows a hot water supply heating system of the second embodiment. As shown in FIG. 6, the hot water heating system 100 includes a heat pump unit 120, a tank unit 128, a hot water heating unit 180, and a heating terminal 190.

The heat pump unit 120 has the same configuration as the heat pump unit 120 of the first embodiment. The heat pump unit 120 is a heat pump that heats water sent from the tank unit 128 by absorbing heat from the atmosphere. The heat pump unit 120 is provided with a circulation pump 122 for circulating water between the heat pump unit 120 and the tank unit 128. Operation of the components of the heat pump unit 120 including the circulation pump 122 is controlled by the controller 121.

The tank unit 128 has a tank 130 for storing water. The tank 130 of this embodiment is an example, but has a capacity of 50 liters. The tank 30 is provided with the some tank thermistor 142a, 142b, 142c along a height direction. The tank thermistors 142a, 142b, 142c are connected to the controller 154. The controller 154 can grasp | ascertain the amount of heat stored in the tank 130 from the temperature detected by the tank thermistor 142a, 142b, 142c. The controller 154 also includes a counter that counts the number of starts of the heat pump unit 120.

The tank 130 is connected to the heat pump unit 120 through the heat storage path 134 and the heat storage return path 132. The heat storage path 134 is a pipeline for sending water from the tank 130 to the heat pump unit 120, and is connected to the bottom of the tank 130. The heat storage return passage 132 is a conduit for returning water from the heat pump unit 120 to the tank 130 and is connected to the top of the tank 130. The heat storage path 134 and the heat storage return path 132 constitute a circulation path for circulating water between the heat pump unit 120 and the tank 130. The circulation pump 122 is provided in the circulation path.

In the heat storage passage 134, a manual valve 124 and a heat storage passage thermistor 144 are provided. Similarly, the regenerative return 132 is provided with a manual valve 124 and a regenerative return thermistor 146. The thermal storage path thermistor 144 and the thermal storage ear thermistor 146 are connected to the controller 154. The controller 154 grasps the temperature of the water before heating by the heat pump unit 120 from the detected temperature by the heat storage thermistor 144, and the heat pump unit 120 from the detected temperature by the thermistor 146 with heat storage ears. The temperature of the water after heating by) can be grasped. The regenerative thermistor 146 can also be a boiling temperature thermistor which detects the boiling temperature by the heat pump unit 120. When the heat pump unit 120 is in operation, the controller 121 of the heat pump unit 120 is configured such that the compressor of the heat pump unit 120 is moved so that the detected temperature of the thermistor 146 is close to the boiling set temperature due to heat storage. The operation of the expansion valve, the circulation pump 122 is controlled.

The heating terminal 190 is heated by heat radiation from the heating fruit. In this embodiment, the fruit for heating is an antifreeze. The heating terminal 190 is, for example, a panel heater, a panel radiator, floor heating, a fan convector, and a hot water room air conditioner. The heating terminal 190 is connected to the heat exchanger 110 via the heating channel 156 for heating and the heating channel 160 for heating. The heat exchanger 110 exchanges heat between the high temperature water from the tank 130 and the low temperature heating fruit from the heating terminal 190. A double wall liquid-liquid heat exchanger (液 · 液) 器). The heating path 156 is a pipeline that sends the heating fruit from the heat exchanger 110 to the heating terminal 190. The heating return path 160 is a conduit returning the heating fruit from the heating terminal 190 to the heat exchanger 110. The heating path 156 and the heating return path 160 constitute a circulation path for circulating the fruit for heating between the heat exchanger 110 and the heating terminal 190. The heating return thermistor 162 is provided near the inlet of the heat exchanger 110 of the heating return path 160. The heating channel thermistor 158 is provided near the outlet of the heat exchanger 110 of the heating channel 156.

The tank 130 is connected to the heat exchanger 110 via the heat dissipation path 112 and the heat dissipation path 114. The heat dissipation path 112 is a pipeline for sending water from the tank 130 to the heat exchanger 110 and is connected to the upper portion of the tank 130. The heat dissipation return path 114 is a conduit for returning water from the heat exchanger 110 to the tank 130, and is connected to the bottom of the tank 130. The heat dissipation path 112 and the heat dissipation path 114 constitute a circulation path for circulating water between the heat exchanger 110 and the tank 130. The heat radiation path thermistor 148 is provided near the inlet of the heat exchanger 110 of the heat radiation path 112. The circulation pump 116 is provided in the heat radiation return path 114. The operation of the circulation pump 116 is controlled by the controller 154. The controller 154 adjusts the rotation speed of the circulation pump 116 based on the detected temperatures of the heat dissipation return thermistor 148, the heating return thermistor 158, and the heating return thermistor 162.

The heating path 156 is connected to the heating terminal 190 via the hot water supply heating unit 180. The hot water supply heating unit 180 is a combustion heat source and includes two burners 184 and 186 for burning combustible gas. One burner 184 is for hot water supply, and heats the water flowing through the hot water supply pipe 182 as necessary. A burner outlet thermistor 185 is provided downstream from the burner 184 of the hot water supply pipe passage 182. The burner outlet thermistor 185 is connected to the controller 188. According to this configuration, when the hot water supply temperature from the hot water supply pipe passage 182 is too low, the hot water supply temperature can be increased by heating the water flowing through the hot water supply pipe passage 182 by the burner 184. The other burner 186 is for heating and heats the fruit for heating which flows through the heating path 156 as needed. In addition, the hot water heating unit 180 is provided with a controller (188). The hot water heating unit 180 is provided with a circulation pump 187 for circulating the fruit for heating between the heating terminal 190 and the tank unit 128. Further, a burner outlet thermistor 189 is provided downstream from the burner 186 of the heating path 156. The burner outlet thermistor 189 is connected to the controller 188. According to this structure, when the temperature of the heating fruit which is sent to the heating terminal 190 via the heating path 156 is too low, the heating terminal which heats the heating fruit which flows through the heating path 156 by the burner 186 is heated. It is possible to raise the temperature of the heating fruit sent to 190).

A water supply line 102 for supplying water from the tap water to the tank 130 is connected to the bottom of the tank 130. A water supply thermistor 103 is provided in the water supply line 102. A high temperature water pipe 104 for supplying high temperature water from the top of the tank 130 is connected to the top of the tank 130. The high temperature water thermistor 105 is provided in the high temperature water pipe 104. From the water supply pipe 102, a low temperature water pipe 106 for supplying low temperature water from the tap water is branched. The high temperature water pipe 104 and the low temperature water pipe 106 are connected to the mixing valve 108. In the mixing valve 108, the hot water from the hot water pipe 104 and the cold water from the cold water pipe 106 are mixed to supply the mixed water to the hot water pipe line 182. In the vicinity of the mixing valve 108 of the hot water supply pipe 182, a hot water thermistor 109 for detecting the water temperature after mixing is provided. The controller 154 adjusts the opening degree of the mixing valve 108 based on the detected values of the water supply thermistor 103, the high temperature water thermistor 105, and the hot water supply thermistor 109.

In the hot water supply heating system 100 of the present embodiment, when the hot water supply operation or the heating operation is performed and the detection temperature of the tank thermistor 142a is equal to or lower than a predetermined temperature (for example, 75 ° C), the heat pump unit 120 is turned on. Start up. Accordingly, the boiling operation of the tank 130 using the heat pump unit 120 is performed.

In the hot water heating and heating system 100 of the present embodiment, when the hot water heating operation and the heating operation are completed while the heat pump unit 120 is operating, the heat pump unit 120 is stopped. Even when the hot water supply operation or the heating operation is continued, the detection temperature of the tank thermistor 142b exceeds a predetermined temperature (for example, 75 ° C), or the detection temperature of the heat storage royal thermistor 144 is a predetermined temperature ( For example, 70 ° C.), it is determined that the boiling of the tank 130 is completed, and the hot water supply heating system 100 stops the heat pump unit 120.

Similarly to the hot water supply heating system 10 of the first embodiment, in the hot water heating system 100 of the present embodiment, the heat pump unit 120 may be frequently started and stopped by the same processing as in FIG. Therefore, the start / stop frequency of the heat pump unit 120 can be reduced. As a result, the heat pump unit 120 may be prevented from repeatedly starting and stopping to prevent deterioration of components constituting the heat pump unit 120.

Although the embodiments of the present invention have been described in detail above, these are only examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of specific examples exemplified above.

The technical elements described in this specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology illustrated in the present specification or the drawings can simultaneously achieve a plurality of objects, and has technical usefulness by achieving one of them.

10: hot water heating system
20: heat pump unit
21: controller
22: circulation pump
24: manual valve
26: outside temperature thermistor
28 tank unit
30: tank
32: ear for heat storage
34: heat storage path
42a, 42b, 42c: Tank Thermistor
44: regenerative king thermistor
46: Thermistor with regenerative ears
48: The first heating king thermistor
50: Water pipe
52: Manual valve
54: controller
56: heating path
58: The 2nd Heating King Thermistor
60: heating ear
62: heating thermistor
64: bypass path
66: mixing valve
70: expansion tank
80: hot water heating unit
82: hot water supply pipe
84, 86: burner
87: circulation pump
88: controller
89: burner outlet thermistor
90: heating terminal
100: hot water heating system
102: water supply pipe
103: water supply thermistor
104: hot water pipeline
105: high temperature water thermistor
106: low temperature water pipe
108: mixing valve
109: hot water thermistor
110: Heat exchanger
112: heat radiation path
114: heat dissipation ear
116: circulation pump
120: heat pump unit
121: Controller
122: circulation pump
124: manual valve
128: tank unit
130 tank
132: ear for heat storage
134: heat storage royal path
142a, 142b, 142c: Tank Thermistor
144: regenerative king thermistor
146: Thermistor with regenerative ears
148: heat dissipation path thermistor
154 controller
156: heating path
158: heating path thermistor
160: return to heating
162: Thermistor with heating ears
180: hot water heating unit
182: hot water supply pipe
184: burner
185: Burner Outlet Thermistor
186: Burner
187: circulation pump
188: controller
189: burner outlet thermistor
190: heating terminal

Claims (9)

A heat pump that heats up the fruit by absorbing heat from the atmosphere,
A tank for storing the fruit,
A heat storage circulating environment path for circulating fruit between the heat pump and the tank;
A heating terminal (heating terminal) for heating the fruit by radiating heat,
A heating net environment path for circulating fruit between the tank and the heating terminal;
Condition determination means (판단 件 조건 手段) for judging whether or not the conditions related to starting and stopping of the heat pump are satisfied;
And a heat storage amount increasing means for increasing the heat storage amount of the tank when it is determined that the above conditions related to starting and stopping of the heat pump are satisfied. ).
The method of claim 1,
It further comprises a boiling-up temperature thermistor for detecting the temperature of the fruit sent from the heat pump to the tank,
The operation of the heat pump is controlled such that the temperature detected by the boiling temperature thermistor approaches the boiling set temperature while the heat pump is in operation,
And the heat storage amount increasing means increases the heat storage amount of the tank by changing the boiling set temperature to a higher temperature.
The method of claim 1,
It is further provided with a plurality of tank thermistors arranged at different heights for detecting the temperature of the fruit inside the tank,
When the heat pump is operating, the operation of the heat pump is controlled to stop the operation of the heat pump when the temperature detected by the reference tank thermistor reaches the boiling completion temperature,
And the heat storage amount increasing means increases the heat storage amount of the tank by transferring the tank thermistor serving as the reference into a tank thermistor disposed further below the tank.
The method of claim 1,
And said condition relating to starting and stopping of said heat pump is a condition that the starting number of said heat pump reaches a predetermined number of times within a unit period.
The method of claim 1,
And said condition relating to starting and stopping of said heat pump is a condition that the time from starting to stopping of said heat pump is equal to or less than a first predetermined period.
The method of claim 1,
And said condition related to starting and stopping of said heat pump is a condition that the time from starting of said heat pump to starting again after stopping is restarted.
The method of claim 1,
And said condition relating to starting / stopping of said heat pump is a condition that the sum of the number of start-up times of said heat pump in a past unit period is not less than a predetermined number of times.
The method of claim 1,
The energy loss calculated on the basis of the start / stop condition of the heat pump predicted when the condition related to the start / stop of the heat pump increases the heat storage amount of the tank does not increase the heat storage amount of the tank. And a condition that the energy loss calculated on the basis of the start / stop state of the heat pump predicted when it is not is smaller.
A heat pump that heats water by absorbing heat from the atmosphere;
With a tank to store water,
A heat storage pure environment path for circulating water between the heat pump and the tank;
A water supply path for supplying water to the tank;
A hot water supply path for supplying hot water from the tank;
Condition determination means for determining whether or not a condition related to starting and stopping of the heat pump is satisfied;
And a heat storage amount increasing means for increasing the heat storage amount of the tank when it is determined that the condition related to the start / stop of the heat pump is satisfied.

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