KR100459303B1 - Condensing system of refrigerator - Google Patents

Abstract

The disclosed contents are configured to allow the air-cooled, water-cooled, and evaporative condensation systems to operate in a complex manner to selectively respond to changes in ambient air temperature, refrigerant pressure, or condensation load, thereby increasing condensation efficiency and coping with rapid changes in outside temperature. The present invention relates to a condenser system of a refrigerator that can reduce power consumption and enable a compact condenser to be realized.

The present invention is to install a water-cooled condenser on the refrigerant pipe located between the compressor and the air-cooled condenser to perform heat exchange between the fluid while the water flows through the other flow channel adjacent to the refrigerant pipe, the water flow path of the water-cooled condenser The inlet and outlet pipes are respectively connected to automatically supply and discharge in the opposite direction to the flow direction of the refrigerant, and the inlet side of the inlet pipe automatically opens and closes the water supply according to the outside air temperature, the refrigerant pressure, and the condensation load. An evaporative condenser is installed between the compressor and the air-cooled condenser, and the evaporative condenser is placed on the air discharge side of the air-cooled condenser so that the water evaporates by the air forced into the condenser fan. It is configured to condense refrigerant through latent heat of evaporation.

Description

Condensing System of Refrigerator

The present invention relates to a condenser system of a refrigerator, and more particularly, an air-cooled, water-cooled, and evaporative-type condensing system is configured to operate in combination to selectively operate according to the change in ambient temperature, refrigerant pressure, and condensation load. It is possible to proactively cope with the rapid change in the outside temperature while reducing the power consumption, to reduce the power consumption, and to realize the compact condenser.

As is well known, the refrigerator has various devices such as a refrigerator and an air conditioner, and each device basically obtains cold air through heat exchange with air while circulating the refrigerant through elements such as an evaporator, a compressor, a condenser, and an expansion valve. The gas refrigerant compressed at high temperature and high pressure in the compressor is cooled in a condenser to be converted into a liquid refrigerant at room temperature and high pressure.The pressure is reduced through the expansion valve and then evaporated to a low temperature low pressure gas refrigerant state through heat exchange with indoor air in an evaporator. The refrigeration cycle is sucked in, and the evaporator takes the heat from the air during the heat exchange process between the refrigerant and the air to generate cold air, and uses the cold air to perform refrigeration, freezing, and cooling.

At this time, the condenser is an important element for condensing and liquefying the refrigerant of high temperature and high pressure passing through the compressor, and is usually located in the outdoor unit, in which a myriad of fins are inserted into the heat transfer pipe through which the refrigerant flows, and a condenser fan is provided at the front side. An air-cooling type is mainly applied in which heat exchange occurs between the external air forced into the refrigerant and the refrigerant flowing through the heat pipe, and the refrigerant of high temperature and high pressure is condensed.

However, when these refrigerators are applied in areas where the four seasons are clear and the yearly crossover is severe and the crossover season is severe, the area of condenser is usually designed based on the highest outside air temperature to increase the average heat transfer area. If the temperature of the outside air rises, it is suitable for condensation efficiency in summer. However, in winter, when the temperature of outside air decreases, the condenser is more than necessary for the rest of the season except summer. It can be said to be large, as the condenser is larger than necessary, the cost of raw materials is increased, handling is inconvenient, occupies a lot of installation space, and power consumption increases, including many problems.

In consideration of this, the condenser may be configured by water cooling or evaporation instead of air cooling. In the case of water cooling, sufficient quantity of water is required to increase the volume of the device as well as the risk of freezing in winter. In addition, there is a problem that the volume is also increased due to the increase in the external area required for the installation, which is very difficult to install in a small capacity.

The present invention has been made to solve the above problems, by combining a water-cooled condensation system or an evaporative condensation system to perform the water-cooled or evaporative condensation function to the air-cooled condenser according to the ambient temperature, internal refrigerant pressure, condensation load By operating only the air-cooled condenser, or by performing the air-cooled and water-cooled or the air-cooled and evaporated condensation functions, condensation efficiency can be improved, power consumption can be reduced, and the size of the condenser can be reduced. It is to provide a condenser system of a refrigerator that can obtain various effects such as improvement.

1 is a configuration diagram of a condenser system of a refrigerator according to the present invention.

2 is an exemplary view of a water-cooled condenser according to the present invention,

(a) is double pipe type.

(b) is the plate type.

(c) shows that each fluid tube is formed side by side and twisted in a spiral.

(d) is when each fluid pipe is formed side by side and bent in a zigzag.

3 is a condensation system configuration when the water-cooled condenser is further provided in FIG.

4 is a configuration diagram of a condenser system of a refrigerator according to another embodiment of the present invention,

(a) is a schematic diagram.

(b) is a detailed view of the water tank applied to (a).

*** Explanation of main parts of drawing ***

100: air-cooled condenser 101: heat pipe 102: fin

103: condenser fan 200, 200 ': water-cooled condenser 201, 304: refrigerant pipe

202: water flow path 203,203 ', 301: inlet pipe 204,204': outlet pipe

205,302: Quantity automatic control valve 206: Exterior 207: Plate

208: water pipe 209: partition 210: liquid pipe

300: evaporative condenser 303: water tank 305: through

306: float valve

Hereinafter, described in detail by the accompanying drawings of the present invention.

In the condenser system of the refrigerator according to the present invention, as shown in FIG. 1, a heat transfer tube 101 through which a high-temperature, high-pressure refrigerant compressed from a compressor (not shown) flows is zigzag-shaped, and the heat transfer tube 101 is bent. Infinite number of fins (102) is fitted, the front of the condenser fan 103 is provided with the external air forced by the condenser fan 103 is guided by the fin (102) inside the heat pipe 101 In an air-cooled condenser (100) in which heat exchange occurs with a flowing refrigerant, the refrigerant pipe (201) is located on the refrigerant pipe (201) located between the compressor and the air-cooled condenser (100) through another flow path adjacent to the refrigerant pipe (201). The water-cooled condenser 200 is installed to perform heat exchange between the fluids while the water flows, and the water passage 202 of the water-cooled condenser 200 is provided with an inlet pipe so that water is automatically supplied and discharged in a direction opposite to the flow direction of the refrigerant. 203) and outlet pipe (204) The temperature of outside air inflow side of the connection, retrieving pipe 203, respectively, also, the refrigerant is pressure, hayeoseo installed automatically quantity automatic control valve 205 capable of opening and closing the water supply in accordance with the condensing load.

At this time, the water-cooled condenser 200 is configured in a double tube type as shown in FIG. 2 so that the heat exchange occurs between the refrigerant of the high temperature and high pressure and the water of relatively low temperature while the water flows toward the exterior 206, or A zigzag flow path formed by overlapping the sheet plate 207 so as to allow the high temperature and high pressure refrigerant and the relatively low temperature water to flow in an isolated state and to exchange heat with each other, or a water pipe in which water flows inward. 208 is formed side by side with the refrigerant pipe 201 and the partition 209 between the high temperature and high pressure refrigerant and the relatively low temperature of water through the partition 209 can be configured to exchange heat with each other, Any water-cooled condenser capable of performing heat exchange between the refrigerant and water at different temperatures can be applied.

The water-cooled condenser 200 is located on the air discharge side of the air-cooled condenser 100 so that air forced into the condenser fan 103 passes through the air-cooled condenser 100 and then comes into contact with the water-cooled condenser 200 secondly. This is to configure the air-cooled and water-cooled condensation system separately, but in order to maximize the condensation efficiency by contacting the discharged air having a relatively lower temperature than the refrigerant temperature once more, the water-cooled condenser 200 When the water pipe 208 and the coolant pipe 201 are formed side by side with the partition wall 209 interposed, the portion where the water pipe 208 and the coolant pipe 201 are formed side by side may be arranged in a spiral shape around the refrigerant inlet side. When the water pipe 208 and the refrigerant pipe 201 are formed in parallel with each other by bending in a zigzag shape, the water pipe 208 and the refrigerant pipe 201 can be expanded to increase the heat transfer time while increasing the heat transfer area. effective.

In addition, as shown in FIG. 3, the water flows through another flow path adjacent to the liquid pipe 210 on the heat transfer pipe 101 and the rear liquid pipe 210 of the air-cooled condenser 100 so as to perform heat exchange between the fluids. 203 ') and a water-cooled condenser 200' having an outlet pipe 204 ', in which case the water-cooled condenser 200' installed on the rear fluid pipe 210 of the heat-transfer tube 101 of the air-cooled condenser 100 may be installed. Water outlet pipe 204 ′ may be connected to the inlet pipe 203 of the water-cooled condenser 200 installed on the refrigerant pipe 201 between the compressor and the air-cooled condenser 100 so that water may exchange heat with the refrigerant over a second time. Will be configured.

In addition, part of the air-cooled condenser 100 according to the present invention can compensate for the insufficient condensation effect by the water-cooled condensation system can be configured to about 1/2 of the size of the air-cooled condenser applied to the conventional freezer, although not shown outside temperature The temperature sensor may be installed on one side of the refrigerator to which the condensation system according to the present invention is applied to measure the pressure, and the pressure sensor may be installed on the refrigerant pipe to measure the refrigerant pressure. A separate controller for operating the self-regulating valve should be provided.

Solid lines in the arrows of FIGS. 1 to 3 represent the flow of the refrigerant, silver lines represent the flow of air, dashed-dotted lines represent the flow of water, and hatched portions in FIG. 2C represent empty spaces.

Referring to the operation of the condenser system of the refrigerator according to the present invention configured as described above are as follows.

First, the refrigerant flows into the air-cooled condenser 100 side in the state where the refrigerant is compressed at a high temperature and high pressure in the compressor, and passes primarily through the water-cooled condenser 200, where the water-cooled condenser 100 is composed of a double tube type. A water pipe 208 in which water flows to the side 206, or a plurality of plates 207 overlap and a zigzag flow path formed therebetween so that the refrigerant having high temperature and high pressure is separated from the water, or water flows inwardly. ) Is formed side by side with the refrigerant pipe 201 and the partition wall 209 between the high temperature and high pressure refrigerant is relatively low temperature flowing to the exterior 206 when the water-cooled condenser 200 is formed in a double tube type Heat exchange with water, when the water-cooled condenser 200 is formed in a plate-like heat exchange through the plate 207 and the water flowing through the flow path adjacent thereto, the water-cooled condenser 200 Maegwan 201 and the water pipes, if 208 is formed side by side through the partition wall 209 between the heat exchanger and that the water condenses first.

In addition, the water-cooled condenser 200 is located on the air discharge side of the air-cooled condenser 100, when the air forced through the condenser fan 103 is first discharged through the fin 102 and the heat pipe 101 The water-cooled condenser 200 is in contact with the air, and the temperature of the air is primarily obtained from the heat, but compared to the refrigerant at a high temperature and high pressure because it has a relatively low temperature between the air and the refrigerant inside the refrigerant pipe 201 The heat exchange occurs in the refrigerant may cause the refrigerant inside the refrigerant pipe 201 to be condensed secondary.

At this time, when the water-cooled condenser 200 is formed with the water pipe 208 and the coolant pipe 201 side by side with the partition 209 therebetween, the portion where the water pipe 208 and the coolant pipe 201 are formed side by side is provided with the refrigerant inflow side. Since the core is twisted helically or bent in a zigzag form to be in close contact with each other, the refrigerant pipe 201 and the water pipe 208 can be alternately arranged, so that the heat transfer area becomes wider and the flow path of the refrigerant or water becomes longer. It is obvious that by increasing, the condensation efficiency can be further improved.

The refrigerant heat-exchanged first and second in the water-cooled condenser 200 forming portion is continuously introduced to the air-cooled condenser 100 to undergo third-degree heat exchange with external air forcedly introduced by the condenser fan 103, and in this state, The temperature is lowered, so that it can be condensed into the liquid phase at most room temperature and high pressure.

As shown in FIG. 3, the water flows through another flow path adjacent to the liquid pipe 210 on the heat transfer pipe 101 and the rear liquid pipe 210 of the air-cooled condenser 100 to perform heat exchange between the respective fluids. When the water-cooled condenser 200 'having the water outlet pipe 204' is further installed, the water-cooled condenser 200 'is again in the state where the refrigerant flowing through the heat-transfer tube 101 is heat-exchanged in the 1,2,3rd order. It can be introduced into the liquid pipe 210 of the water-cooled condenser (200 ') and the heat exchange again with the water, and thus the high-temperature and high-pressure refrigerant compressed from the compressor is a high temperature and high pressure It can be completely condensed into the liquid phase and introduced into the next stage.

On the other hand, between the compressor and the air-cooled condenser 100, when the water-cooled condenser 200, 200 'is formed in the rear of the air-cooled condenser 100, respectively, the heat pipe 101, the rear liquid pipe 210 of the air-cooled condenser 100 The water outlet pipe 204 'of the water-cooled condenser 200' installed on the water is connected to the inlet pipe 203 of the water-cooled condenser 200 installed on the refrigerant pipe 201 between the compressor and the air-cooled condenser 100. First, the air-cooled condenser (100) is introduced into the water-cooled condenser (200 ') after the first through the third heat exchange process, the temperature is raised to some extent in the process of the fourth heat exchange with the refrigerant of the low temperature state, the compressor and the air-cooled condenser The water-cooled condenser 200 is inevitably supplied between the 100, but even if the water has a certain temperature, the temperature is relatively low compared to the high-temperature and high-pressure refrigerant exiting the compressor immediately, so that sufficient heat exchange effect can be seen. It becomes possible.

As a result, all of the water-cooled and air-cooled condensing systems can be operated while having a much smaller size than the conventional air-cooled condensers. Thus, an improved condensation effect can be obtained than the conventional large-size air-cooled condensers. The whole operation is performed only during the summer when the outside air temperature reaches the highest during the year, when the heat transfer capacity decreases or when the heat load rises sharply, and when the outside air temperature decreases and the refrigerant pressure drops, the temperature sensor or pressure By detecting the water through the automatic water shut off valve through the automatic control valve 205, only the air-cooled condenser 100 is operated, such that sufficient condensation effect even if only operating the small size of the air-cooled condenser 100 with low power consumption To get the rest of the water cooled condenser 200, It will be able to reduce power consumption as much as just.

4 is a view illustrating a condenser system of a refrigerator according to another embodiment of the present invention, in which a heat transfer tube (101) through which a high-temperature, high-pressure refrigerant compressed from a compressor flows is bent in a zigzag shape, and the heat transfer tube (101) is bent. Infinite number of fins (102) is fitted, the front of the condenser fan 103 is provided with the external air forced by the condenser fan 103 is guided by the fin (102) inside the heat pipe 101 In the air-cooled condenser 100 in which heat exchange occurs between the flowing refrigerant, an evaporative condenser 300 is installed between the compressor and the air-cooled condenser 100, but the evaporative condenser 300 is a quadrilateral body. Inlet pipe 301 is connected so that the water can be automatically supplied to the inlet side of the inlet pipe 301 quantity automatic control valve 302 to automatically open and close the water supply according to the outside temperature, refrigerant pressure, condensation load Through The tank 303 is provided and placed in the upper side of the air-cooled condenser 100, and the outlet side is air-cooled while the refrigerant pipe 304 located between the compressor and the air-cooled condenser 100 is submerged in the water tank 303. It is connected to the inlet side of the heat transfer tube 101 of the condenser 100 to allow the refrigerant flowing inside the heat transfer tube 101 to exchange heat in contact with the water of a lower temperature, the condenser fan 103 of the water tank 303 Located in the upper portion, the through-hole 305 is formed between the refrigerant pipe 304 submerged in the water tank 303 so as to communicate with the lower side so that the external air forced into the water tank 303 by the condenser fan 103 is opened. The water inside the water tank 303 is evaporated while passing through to condense the refrigerant inside the refrigerant pipe 304 by the latent heat of evaporation.

At this time, the water tank 303 is provided with a float valve 306 that opens and closes the water inlet pipe 301 while floating according to the water level.

Even in this case, the air-cooled condenser 100 part can compensate for the insufficient condensation effect by the evaporative condensation system, and thus can be configured to about 1/2 of the size of the air-cooled condenser applied to the conventional refrigerator. To this end, a temperature sensor may be installed on one side of the refrigerator to which the condensation system according to the present invention is applied, and a pressure sensor may be installed in the refrigerant pipe 304 to measure the refrigerant pressure, and each sensor may be separate from the float valve 306. It is provided with a separate controller for operating the automatic quantity control valve 302 by calculating the detection signal of.

The solid line in the arrow of FIG. 4 represents the flow of refrigerant, the silver line represents the flow of air, and the dashed-dotted line represents the flow of water.

The condenser system of the refrigerator according to another embodiment of the present invention configured as described above functions as follows.

First, when the refrigerant flows into the air-cooled condenser 100 in a state where the refrigerant is compressed at a high temperature and high pressure, a portion of the refrigerant pipe 304 between the compressor and the air-cooled condenser 100 is submerged in the water tank 303, rather than a refrigerant having a high temperature and high pressure. Since the water having a low temperature and the refrigerant exchange heat with each other, the temperature of the refrigerant is lowered (water-cooled condensation system), and the condenser fan 103 is driven so that external air passes through the through hole 305 of the water tank 303. As the water in the water tank 303 is evaporated by this air, the temperature of the refrigerant is taken away by the latent heat of evaporation, and the temperature of the refrigerant is further lowered by this action (evaporative condensation system), and the refrigerant continues to be air-cooled condenser (100). The temperature is further lowered in the process of heat exchange with the external air forced by the condenser fan 103 while flowing into the heat transfer pipe 101 of the (). The refrigerant is condensed in the liquid phase state can be introduced to the next step.

As a result, all evaporative and air-cooled condensing systems can be operated while having a much smaller size than conventional air-cooled condensers, thereby achieving an improved condensation effect than conventional large-size air-cooled condensers. The whole operation of the system is performed only during the summer when the outside temperature rises to the highest level during the year, when the heat transfer capacity decreases or when the heat load rises sharply, and when the outside air temperature decreases and the refrigerant pressure drops, the temperature sensor Alternatively, only the air-cooled condenser 100 is operated by blocking the water through the water quantity control valve 302 by detecting the pressure sensor, so that only a small size of the air-cooled condenser 100 is operated with low power consumption. Effects can be obtained that do not drive the remaining portion of the evaporative condenser 300 As long as it is possible to reduce power consumption.

In addition, if the water in the water tank 303 rises above the set level even during the operation of all evaporative and air-cooled condensation systems, the float valve 306 floats according to the water level and automatically closes the inlet pipe 301 to supply water. By blocking it can always maintain a certain level.

As described above, the present invention combines an air-cooled condenser of a smaller size than a general air-cooled condenser and combines a water-cooled and evaporative condensing system to drive all the condensing systems according to the outside temperature, the refrigerant pressure, and the condensing load so as to exhibit a sufficient condensing effect. Or, by only operating the air-cooled condensation system to actively cope with the condensation of the refrigerant according to the change in the outside temperature, the power consumption can be reduced by stopping the operation of unnecessary parts, and the overall size of the condenser can be reduced to reduce the manufacturing cost Of course, it is easy to handle and can be installed in a narrow place has a very useful effect of widening the application range.

Claims (10)

The heat transfer pipe 101 through which the high-temperature, high-pressure refrigerant compressed from the compressor flows is bent in a zigzag shape, and a myriad of fins 102 are fitted into the bent heat transfer tube 101, and a condenser fan 103 is placed on the front surface thereof. An air-cooled condenser 100 provided with external air forced into the condenser fan 103 by the fins 102 so that heat exchange occurs between refrigerant flowing through the heat pipe 101; The water flow path 202 is configured to perform heat exchange between the fluids while the water flows through the water flow path 202 adjacent to the refrigerant pipe 201 on the heat transfer pipe 101 and the refrigerant pipe 201 which is one body. Inlet pipe 203 and outlet pipe 204 are respectively connected to the water supply pipe 203, the inlet side of the inlet side of the water supply automatic control valve that can automatically open and close the water supply according to the outside temperature, refrigerant pressure, condensation load Water-cooled condenser 200 with 205 installed In a condensation system having The water-cooled condenser 200 is located between the compressor and the air-cooled condenser 100 on the air discharge side of the air-cooled condenser 100 so that the air forced into the condenser fan 103 is introduced into the air-cooled condenser 100. After passing through), the water-cooled condenser 200 may be secondly contacted, and the water passage 202 of the water-cooled condenser 200 may be automatically supplied and discharged in a direction opposite to the flow direction of the refrigerant. Condenser system of the refrigerator, characterized in that configured. delete delete delete delete delete delete The heat transfer pipe 101 through which the high-temperature, high-pressure refrigerant compressed from the compressor flows is bent in a zigzag shape, and a myriad of fins 102 are fitted into the bent heat transfer tube 101, and a condenser fan 103 is placed on the front surface thereof. An air-cooled condenser 100 provided with external air forced into the condenser fan 103 by the fins 102 so that heat exchange occurs between refrigerant flowing through the heat pipe 101; The water flow path 202 is configured to perform heat exchange between the fluids while the water flows through the water flow path 202 adjacent to the refrigerant pipe 201 on the heat transfer pipe 101 and the refrigerant pipe 201 which is one body. Inlet pipe 203 and outlet pipe 204 are respectively connected to the water supply pipe 203, the inlet side of the inlet side of the water supply automatic control valve that can automatically open and close the water supply according to the outside temperature, refrigerant pressure, condensation load Water-cooled condenser 200 with 205 installed In a condensation system having The water inlet pipe 203 'and the water outlet pipe (203') to perform heat exchange between the fluids while the water flows through another flow path adjacent to the liquid pipe 210 on the heat transfer pipe 101 and the rear liquid pipe 210 of the air-cooled condenser 100 ( And a water-cooled condenser (200 ') having a 204'). The method of claim 8, On the refrigerant pipe 201 between the compressor and the air-cooled condenser 100, the outlet pipe 204 ′ of the water-cooled condenser 200 installed on the heat transfer pipe 101 and the rear liquid pipe 210 of the air-cooled condenser 100 is provided. The condenser system of the refrigerator, characterized in that the water is connected to the inlet pipe 203 of the installed water-cooled condenser 200 to heat exchange with the refrigerant over a secondary. The heat transfer pipe 101 through which the high-temperature, high-pressure refrigerant compressed from the compressor flows is bent in a zigzag shape, and a myriad of fins 102 are fitted into the bent heat transfer tube 101, and a condenser fan 103 is placed on the front surface thereof. In the air-cooled condenser 100 provided with the external air forced by the condenser fan 103 is guided by the fin 102 so that heat exchange occurs between the refrigerant flowing through the heat pipe 101 , An evaporative condenser 300 is installed between the compressor and the air-cooled condenser 100, but the evaporative condenser 300 is a quadrangular body and an inlet pipe 301 is connected so that water can be automatically supplied. On the inlet side of the water inlet pipe 301 is provided with a water tank 303 through the water supply automatic control valve 302 to automatically open and close the water supply according to the outside temperature, refrigerant pressure, condensation load, the air-cooled condenser ( The heat exchanger tube of the air-cooled condenser 100 is placed on an upper side of the air-cooled condenser 100 while the part of the refrigerant pipe 304 located between the compressor and the air-cooled condenser 100 is immersed in the water tank 303. It is connected to the inlet side of the 101 to allow the refrigerant flowing inside the refrigerant pipe 304 to exchange heat in contact with the water of a lower temperature than that, the condenser fan 103 is located above the water tank (303) And submerged in the water tank 303 A through hole 305 is formed between the refrigerant pipes 304 so as to communicate with the lower side, so that the external air forced into the condenser fan 103 passes through the water tank 303, and the water inside the water tank 303. To evaporate the condensed refrigerant in the refrigerant pipe 304 by the latent heat of evaporation, and the float valve 306 to open and close the water inlet pipe 301 while floating in the water tank 303 according to the water level. The condenser system of the refrigerator, characterized in that the installation.