CN106871276A - The small-power refrigerated medium pump of leak fluid molecule does not replace the super-high-rise building air conditioning system of high powered water pump low effective circulation delivery of energy - Google Patents

Abstract

A low-power refrigerant pump that does not leak fluid molecules replaces the cooling and heating air-conditioning system of super high-rise buildings (for example: tens of floors or even hundreds of floors) that replaces high-power water pumps with low-efficiency circulation. Liquid and gaseous refrigerant pressurized distribution device, the liquid refrigerant pressurized distribution device is activated when cooling and air conditioning is required, and the gaseous refrigerant pressurized distribution device is activated when heating and air conditioning is required. The CN 100473912C patented technology of scale and difficulty in removing scale enables the liquid or gaseous refrigerant in the evaporator or condenser in the system to directly cool or heat the air in the room. The implementation cost of the above-mentioned two-item refrigerant pressurized distribution device is basically equivalent to the facility cost involved in the omitted above-mentioned water medium; at the same time, a fully-sealed structural design concept is proposed for the components involved in the two-item device: that is, the pump body is allowed to leak Refrigerant, but never allow the leaked refrigerant to enter the atmosphere.

Description

The low-power refrigerant pump that does not leak fluid molecules replaces the inefficient circulation of high-power water pumps Cooling and heating air-conditioning system for super high-rise buildings with energy transmission

Divisional application:

Original filing number "2011100520591" Original filing date "March 4, 2011"

Invention name of the original case "Heating, heating and air-conditioning system for super high-rise buildings with energy transmission without water medium and its control method"

technical field

The invention relates to a heating and cooling air-conditioning system for super high-rise buildings (for example, tens of floors or even hundreds of floors) without using water medium as an auxiliary transmission of cold or heat. ——Obviously: the present invention has utilized the thermal engineering principle that " latent heat " exchange amount is far greater than " sensible heat " exchange amount.

Background technique:

In current high-rise building projects, especially in the design of heating and cooling air-conditioning systems in super high-rise building projects, it is a common technical means to use water as the cooling medium to transfer cold and heat to terminal equipment (such as: fan coil units and water-cooled heaters, etc.) . This is because:

It is difficult to directly drive the rated flow of liquid refrigerant by relying only on the force of the high and low pressure difference caused by the compressor in the air conditioning system, and enter the super high-rise building tens of meters, or even hundreds of meters, for room air conditioning through the winding pipeline. . Therefore, it is accomplished by using water that has been heat-exchanged with the relevant air-conditioning device and its associated water pumps: indirectly distributing the cooling or heat produced by the air-conditioning system to rooms on floors of any height that require air-conditioning.

The advantage of this type of air-conditioning system is that the liquid water with larger heat capacity has higher efficiency in transferring cold or heat, and it is convenient for on-site adjustment of the terminal cold or heat required by the room. Its shortcoming is that it has high requirements on water quality, usually in order to slow down the scale formation (affecting heat conduction) in the pipe network that distributes cooling or heat, especially the terminal equipment, it is necessary to use chemicals every one or two years Unblock a huge heat exchange system consisting of a network of water pipes. Secondly, the workload of leaking and repairing leaks in the entire water pipe network will not be small. It can be imagined that due to the full involvement of water in the air-conditioning cold and heat distribution system, the maintenance workload and maintenance cost of the prior art are considerable.

The problem in the existing air-conditioning system is (taking refrigeration as an example): sandwiching water as an intermediate medium between the cold source (refrigeration evaporator) and the air conditioner user (room with people) to assist the transfer of cold energy, the The intermediate link formed by the transfer process of cold energy, like the commercial route, will be "peeled off one more layer" by one more commercial link. Obviously, the intervention of water and related facilities in the air-conditioning system of super high-rise buildings is a It is not good for energy saving.

CN 100473912C (ZL02158216.5) patent technology proposes a cooling and heating air-conditioning system that is beneficial to energy saving and does not need water media to transfer cold and heat twice in high-rise buildings and its use method, that is, the liquid refrigeration in the evaporator of the cooling and heating air-conditioning system Refrigeration and air-conditioning technology that cools the air in high-rise rooms through direct evaporation in the evaporator (the level of the building can be unlimited-the level of the building is related to the lift of the refrigerant liquid pump and has nothing to do with the evaporation pressure of the liquid refrigerant); When heating, it adopts the heating and air-conditioning technology that allows the condensation pressure in the heating and cooling air-conditioning system to promote the gaseous refrigerant to enter the high-rise building to directly warm the air in the limited high-rise room. ——If only relying on the above-mentioned condensing pressure to promote the gaseous refrigerant to meet the heating demand of not too high buildings, the problem is not very big. However, in super high-rise buildings, it is likely that the gaseous refrigerant directly implements heating and air conditioning to the air. Appears to be "powerless".

Contents of the invention

The purpose of the present invention: it is a more perfect improvement to the above-mentioned CN 100473912C technology, so as to solve the above-mentioned "powerless" problem.

Key of the present invention is:

A pressurized distribution device for liquid refrigerant and a pressurized distribution device for gaseous refrigerant are added to the cooling and heating air-conditioning system of the building to replace the water medium in the prior art and related facilities.

The characteristics that the present invention compares with prior art:

Due to the content of the above-mentioned "the key of the present invention lies in", conditions are created for: solving various troubles caused by water, and perfecting the design scheme of the whole heating and cooling air-conditioning system to realize anhydrous.

Description of drawings

Figure 1 illustrates the working principle of an embodiment of the present invention.

X: Refrigerant pressurized distribution device; W: Low-pressure liquid storage tank; B: Refrigerant pump; c: Liquid pump; d: Second metal sealed shell; K: Gas refrigerant pressurized distribution device; a: Air pump; b : the first metal sealed shell; s: the hole set on the pipeline wall between the air pump inlet end and the cavity wall in the first metal sealed shell cavity; Take the smaller one); Q1: Refrigerant flow direction in cooling condition (direction of solid arrow); Q2: Refrigerant flow direction in heating condition (direction of dotted arrow); V: Heating control valve group; U : Airflow control valve group; Y: Liquid flow control valve group; P1: Refrigeration air return valve; P2: Heating air return valve; P3: Heating exhaust valve; P4: Refrigeration exhaust valve; P5: Refrigeration air pressure balance valve ;P6: cooling liquid supply valve; P7: heating bypass valve; P8: cooling liquid distribution valve; P9: heating and cooling control valve; P10: heating distribution valve; 2: Heat exchanger fan; 3: Compressor; 4: Unit fan; 5: Unit heat exchanger; 6: Throttle valve; 7: Dry filter.

detailed description

Here, it needs to be explained first: when the existing air-conditioning system implements cooling conditions, it usually uses a medium water distribution device composed of water, a water pump and an intermediate medium heat exchanger. The hot air is transported to high-rise or super-high-rise rooms that require cooling or heating air-conditioning.

In the cooling and heating air-conditioning system of the present invention, the above-mentioned medium water dispensing device is obviously omitted, and the liquid refrigerant pressurized distribution device X and the gaseous refrigerant pressurized distribution device K jointly omit the device using water, so that the refrigerant can directly exchange heat The air in the room is cooled or heated in the air conditioner, just as people directly cool and heat in their own room with a small-power air conditioner for household use, and have nothing to do with water.

In order to realize the object of the present invention, it is proposed to adopt the following technologies:

The present invention includes: room heat exchanger 1, unit heat exchanger 5, compressor 3, and restrictor 7 four major conventional refrigeration basic components connected on the pipeline of the cooling and heating system, and filling in the cooling and heating system suitable for heating and cooling Refrigerants for air conditioning;

It is characterized in that the cooling and heating air-conditioning system also includes a liquid refrigerant pressurized distribution device X and a gaseous refrigerant pressurized distribution device K:

1. When implementing refrigeration and air conditioning: activate the pressurized distribution device X for liquid refrigerant, and close the pressurized distribution device K for gaseous refrigerant; - at this time, the room heat exchanger 1 plays the function of evaporator cooling, and the unit heat exchange at this time The device 5 brings into play the condensation heat dissipation function of the condenser outdoors.

2. When implementing heating and air-conditioning: activate the pressurized distribution device K for gaseous refrigerant, and close the pressurized distribution device X for liquid refrigerant. ——At this time, the room heat exchanger 1 plays the function of condenser heating, and the unit heat exchanger 5 at this time plays the function of evaporator cooling and heat absorption outdoors

The present invention specifically regulates the operation and use method of the heating and cooling air conditioner, which is characterized in that the method of controlling the flow direction of the refrigerant suitable for the two kinds of heating and cooling air conditioning working conditions through the valve is as follows:

3. The following valves will be involved in the regulation of refrigerant flow direction:

The airflow control valve group U that controls the forward and reverse suction and exhaust operations of the compressor 3 includes: cooling return valve P1, heating return valve P2, heating exhaust valve P3 and cooling exhaust valve P4;

The refrigeration regulating valve group that controls whether the liquid refrigerant pressurized distribution device X works or not includes: the liquid flow regulating valve group Y of the refrigerant pump B composed of the heating bypass valve P7 and the refrigeration liquid distribution valve P8, and the refrigerant air pressure control valve group Y. Two parts of the function control valve group of the low-pressure liquid storage barrel W composed of the balance valve P5 and the refrigeration liquid supply valve P6;

The heating control valve group V that controls whether the pressurized distribution device K of gaseous refrigerant works or not includes: the heating and cooling control valve P9 and the heating distribution valve P10;

Throttle valve 6 that is fine-tuned during cooling and air-conditioning and heating and air-conditioning respectively;

4. When implementing refrigeration and air conditioning:

Open: Refrigeration return air valve P1, refrigeration exhaust valve P4, refrigeration air pressure balance valve P5, refrigeration liquid supply valve P6, refrigeration liquid distribution valve P8, and cooling and heating control valve P9;

Close: heating return valve P2, heating exhaust valve P3, heating bypass valve P7 and heating distribution valve p10;

Start: Refrigerant pump B;

Fine-tuning: Throttle valve 6 (the diameter of the expansion valve), so that the condensation temperature of the unit heat exchanger 5 used as a condenser and the evaporation temperature of the room heat exchanger 1 used as an evaporator meet the standard requirements of refrigeration conditions ;

5. When implementing heating and air conditioning:

Open: heating return valve P2, heating exhaust valve P3, heating bypass valve P7 and heating distribution valve P10;

Close: Refrigeration air return valve P1, refrigeration exhaust valve P4, refrigeration air pressure balance valve P5, refrigeration liquid supply valve P6, refrigeration liquid distribution valve P8 and cold and hot control valve P9;

Stop start: Refrigerant pump B.

Fine-tuning: Throttle valve 6 (reducing the caliber of the valve), lowering the evaporation temperature of the unit heat exchanger 5 used as the evaporator, so that it meets the standard requirements of heating conditions. - If the condensing pressure in the room heat exchanger 1 used as a condenser increases, it is normal.

——The refrigeration return valve P1, heating return valve P2, heating exhaust valve P3 and cooling exhaust valve P4 belonging to the airflow control valve group U are replaced by a two-position four-way solenoid valve.

——The heating bypass valve P7 and the cooling liquid distribution valve P8 to which the liquid flow control valve group Y belongs are replaced by a two-position three-way solenoid valve.

——The heating and cooling control valve P9 and the heating distribution valve P10 belonging to the heating control valve group V are replaced by a two-position three-way solenoid valve.

Regarding the setting of the liquid refrigerant pressurized distribution device X in the present invention:

When implementing refrigeration and air conditioning, the liquid refrigerant pressurized distribution device X is used. At this time, the room heat exchanger 1 is used as an indoor evaporator, and the unit heat exchanger 5 is used as an outdoor condenser.

The liquid refrigerant pressurized distribution device X is composed of a refrigerant pump B and a low-pressure liquid storage barrel W arranged at the lower part of the former: the actual effective head of the refrigerant pump B in the cooling and heating system determines the room used as an evaporator The maximum practical installation height of the heat exchanger 1, ie the maximum practical level in the building.

The refrigerant pump B includes: a liquid pump c (including its driving motor) and a fully-sealed second metal sealed casing d that surrounds the liquid pump c in a three-dimensional form. The liquid inlet pipe interface and the liquid discharge pipe interface of the liquid pump c are connected, and the interface of the low-pressure gas balance pipe H communicating with its inner cavity is also provided on the upper part of the metal sealing shell d;

The low-pressure liquid storage barrel W is provided with; the bottom liquid outlet pipe interface, the middle liquid supply pipe interface and the top low-pressure air pipe interface including the low-pressure gas balance pipe H that can be indirectly connected;

The seams and connecting pipes involved in the liquid refrigerant pressurized distribution device are combined by non-detachable welding process. In addition, when the device is activated, it will not cause changes in the relevant data in the cooling mode.

Since the liquid leakage problem of the liquid pump C is difficult to solve, the structural design of the whole refrigerant pump B should not only allow the leakage of the liquid refrigerant, but also not allow the leaked refrigerant to enter the atmosphere space. (wasted), for this reason, the liquid pump c must be located in the middle of the second metal sealed casing d in structure, and then an air pressure balance tube H is connected in the cavity of the casing d: the purpose is to let the liquid pump The refrigerant pump leaking out of c is stored in the cavity of the shell d, since the air pressure balance pipe H is finally connected with the suction end of the compressor 3 in the refrigeration working condition (the lowest pressure point of the whole system), Therefore, the temporarily stored liquid refrigerant will quickly vaporize and be sucked by the compressor 3 before being reused. ——The above-mentioned process mechanism realizes: the structural design concept that not only allows the leaked liquid refrigerant but does not allow the leaked liquid refrigerant to enter the atmospheric space.

The main function of the low-pressure liquid storage tank W is to temporarily store the liquid refrigerant that has been condensed and liquefied by the unit heat exchanger 5 used as a condenser and delivered through the pipeline, and provide it to the above-mentioned refrigerant pump B at any time: The low-pressure liquid refrigerant is pumped to the high room heat exchanger 1 used as an evaporator. ——In order for the refrigerant pump B to work normally, a low-pressure gas balance that can be directly or indirectly connected to the suction end of the compressor 3 in the refrigeration working condition must be installed on the top of the low-pressure liquid storage barrel W (above the liquid level in the barrel). Tube H.

The setting of the liquid refrigerant pressurized distribution device X has been disclosed in CN 100473912C technology, and here only the leak-proof structure of the "refrigerant pump B" which has not been involved in it is mainly explained.

Regarding the setting of the gaseous refrigerant pressurized distribution device K in the present invention:

Although the condensing pressure in the heating and cooling system is higher than the evaporating pressure, relying on one's own strength to send the high-temperature gaseous refrigerant to the height of several floors, and to overcome the resistance of the pipes on the way, you will feel "powerless". Just the right amount of extra external force (gas pump a) to assist in transporting the gaseous refrigerant upwards, and it will feel handy.

When the heating and air conditioning is implemented, the pressurized distribution device K for gaseous refrigerant is activated. At this time, the room heat exchanger 1 is used as an indoor condenser, and the unit heat exchanger 5 is used as an outdoor evaporator.

Because the present invention uses the gaseous refrigerant pressurized distribution device K to additionally relay or increase the action, the gaseous refrigerant can be assisted to push itself to a higher floor, and the normal room air can be directly conditioned by the gaseous refrigerant in the condenser. Hot air conditioners create the conditions. In this way, it will be possible to increase the evaporation pressure of the refrigerant in the unit heat exchanger 5 used as the evaporator outdoors in the heating and air-conditioning system, that is, to increase the cooling temperature of the outdoor unit heat exchanger 5, then for the outdoor low temperature environment It is unfavorable to absorb the outdoor heat under the low temperature environment condition by evaporative heat absorption under the condition.

In order to lower the evaporation pressure in the heat exchanger 5 of the outdoor unit used as the evaporator in the heating and air-conditioning system, that is, the evaporation temperature, it should be coordinated with the fine-tuning of the throttle 6 (diameter adjustment), and the liquid refrigerant should be appropriately reduced. Flow rate, so that the evaporation temperature can be reduced to the original standard state (suitable for the indoor heating level when the ambient temperature is not lower than 7°C) or a more appropriate level. ——The lower the evaporating temperature is, the easier it is to absorb the heat of the outdoor air under low-temperature ambient conditions, however, the absorbed heat of this low temperature will be reduced. In addition, if the outdoor ambient temperature is relatively low, the above-mentioned evaporating temperature can also be appropriately adjusted to be relatively low by reducing the caliber of the restrictor 2 . However, too low evaporating temperature is likely to cause frosting on the heat exchanger 5 of the outdoor unit used as the evaporator, which is unfavorable for maintaining normal indoor heating conditions.

Obviously, due to the addition of the gaseous refrigerant pressurized distribution device K in the system, it is necessary to cooperate with the fine-tuning of the throttle valve 6 when changing the cooling and heating working conditions, otherwise, the heating working condition (non-standard working condition) is difficult to achieve the ideal working condition. Since the fine-tuning of the throttle valve 6 is required during heating and air-conditioning, it is unavoidable to fine-tune the throttle valve 6 when switching to refrigeration and air-conditioning again (although it is a standard working condition). The standard working condition changes back to the standard working condition during refrigeration.

The basic concept of the structural design of the pressurized distribution device K for gaseous refrigerant is also: to allow leakage of the gaseous refrigerant but not to allow the leaked refrigerant to enter the atmosphere (waste).

In the central cooling, heating and air-conditioning system including the present invention, it is currently impossible to ensure that the refrigerant therein never leaks. However, efforts should be made towards the above-mentioned direction of "absolutely no refrigerant leakage". The design of the present invention is based on this principle: for example, the key components "refrigerant pump B" and "gas refrigerant pressurized distribution device K" in the present invention belong to the process of normal operation. Among them, there are two fully sealed components that will never leak refrigerant molecules into the atmospheric space.

Claims (1)

1. a kind of Super High of the small-power refrigerated medium pump substitution high powered water pump low effective circulation delivery of energy of not leak fluid molecule is built Build waring and cooling air conditioning system,

It includes：It is connected to room heat exchanger (1) on cooling/warming system pipeline, set heat exchange device (5), compressor (3) and throttling The big conventional refrigerant basic element of character of device (7) four, and charge the refrigerant for being suitable for air conditioner operating mode in the cooling/warming system；

Characterized in that, allowed in setting in the waring and cooling air conditioning system further comprises liquid refrigerant pressurize dispenser (X) with Gaseous refrigerant pressurization dispenser (K)：

When one, implements refrigeration air-conditioner：Liquid refrigerant pressurization dispenser (X) is enabled, gaseous refrigerant pressurization dispatching dress is closed Put (K)；

When two, implement cooling/heating air conditioner：Gaseous refrigerant pressurization dispenser (K) is enabled, liquid refrigerant pressurization dispatching dress is closed Put (X)；

Described liquid refrigerant pressurizes dispenser (X) in structure including refrigerated medium pump (B) and positioned at the refrigerated medium pump (B) top and with low pressure receiver bucket (W) of refrigerated medium pump (B) adapted；Described refrigerated medium pump (B) include liquid pump (c) with Metal sealing shell (d) of full seal type second of the liquid pump (c) is surrounded with stereogenic, in second metal sealing shell (d) It is upper to be provided with the feed liquor interface tube and discharge opeing interface tube for directly connecting the liquid pump (c), also, also in the second metal sealing shell D the top of () is provided with the interface with the low-pressure gas balance pipe of its inner space；Set on described low pressure receiver bucket (W) ：Bottom drain pipe interface, middle part feed flow interface tube and the top including that can be indirectly connected with including low-pressure gas balance pipe (H) Low pressure gas pipe interface；

Described gaseous refrigerant pressurization dispenser (K) includes air pump (a) and surrounds the air pump with stereogenic in structure Metal sealing shell (b) of full seal type first of (a), be provided with first metal sealing shell (b) it is external can be with Intake interface and the external exhaust port that can be connected with room heat exchanger (1) that compressor (3) exhaust outlet is connected, and And, the exhaust port allowed on first metal sealing shell (b) sets therebetween communicating pipe with the air entry of the air pump (a) Road, also, hole (s) is set on the tube wall of the connecting pipe；

Use non-removable at the seam crossing that described gaseous state pressurizes involved by dispenser with liquid refrigerant and connecting leg Welding procedure is implemented to combine；

Described waring and cooling air conditioning system is suitable for carrying out room air conditioner in the high-rise building even more than hundred meters.