阅读说明：本技术 一种提高低温制冷能力的风冷模块机组 (Air-cooled modular unit for improving low-temperature refrigerating capacity ) 是由 刘益才 杨焕弟 方挺 于 2021-07-14 设计创作，主要内容包括：一种提高低温制冷能力的风冷模块机组,包括循环主路上的压缩机、高压排气管、油气分离器、风冷换热器、水冷换热器、四通阀和气液分离器,四通阀设有A端、B端、C端、D端,压缩机输出端通过高压排气管与油气分离器一端连接,油气分离器另一端与四通阀A端连接,四通阀B端与水冷换热器一端连接,水冷换热器另一端与风冷换热器一端连接,且水冷换热器与风冷换热器连接的管路上设有节流装置和第一电磁阀、风冷换热器另一端与四通阀D端连接,四通阀C端与气液分离器一端连接,气液分离器另一端与压缩机输入端连接,节流装置与第一电磁阀相连管路之间引一第一支路,第一支路上连接有第二电磁阀、第三电磁阀、辅助换热器模块和集热装置。(An air-cooled modular unit for improving low-temperature refrigerating capacity comprises a compressor on a circulation main path, a high-pressure exhaust pipe, an oil-gas separator, an air-cooled heat exchanger, a water-cooled heat exchanger, a four-way valve and an air-liquid separator, wherein the four-way valve is provided with an A end, a B end, a C end and a D end, the output end of the compressor is connected with one end of the oil-gas separator through the high-pressure exhaust pipe, the other end of the oil-gas separator is connected with the A end of the four-way valve, the B end of the four-way valve is connected with one end of the water-cooled heat exchanger, the other end of the water-cooled heat exchanger is connected with one end of the air-cooled heat exchanger, a throttling device and a first electromagnetic valve are arranged on a pipeline connecting the water-cooled heat exchanger and the air-cooled heat exchanger, the other end of the air-cooled heat exchanger is connected with the D end of the four-way valve, the C end of the four-way valve is connected with one end of the air-liquid separator, the other end of the compressor is connected with the first electromagnetic valve, a first branch is led between the pipeline connecting the throttling device and the first electromagnetic valve, the first branch is connected with a second electromagnetic valve, a third electromagnetic valve, an auxiliary heat exchanger module and a heat collecting device.)

1. The utility model provides an improve air-cooled modular unit of low temperature refrigerating capacity which characterized in that: the air-cooled heat exchanger comprises a compressor (1), a high-pressure exhaust pipe (2), an oil-gas separator (3), an air-cooled heat exchanger (4), a water-cooled heat exchanger (5), a four-way valve (6) and a gas-liquid separator (7) which are arranged on a circulation main path, wherein the four-way valve (6) is provided with an A end, a B end, a C end and a D end, the output end of the compressor (1) is connected with one end of the oil-gas separator (3) through the high-pressure exhaust pipe (2), the other end of the oil-gas separator (3) is connected with the A end of the four-way valve (6), the B end of the four-way valve (6) is connected with one end of the water-cooled heat exchanger (5), the other end of the water-cooled heat exchanger (5) is connected with one end of the air-cooled heat exchanger (4), a throttling device (8) and a first electromagnetic valve (9) are arranged on a pipeline for connecting the water-cooled heat exchanger (5) and the air-cooled heat exchanger (4), the other end of the air-cooled heat exchanger (4) is connected with the D end of the four-way valve (6), the air-cooled heat exchanger is characterized in that the C end of the four-way valve (6) is connected with one end of the gas-liquid separator (7), the other end of the gas-liquid separator (7) is connected with the input end of the compressor (1), a first branch is led between pipelines connected with the throttling device (8) and the first electromagnetic valve (9), the first branch is connected with the second electromagnetic valve (13), the third electromagnetic valve (14), the auxiliary heat exchanger module (11) and the heat collecting device (12), and the first branch is connected between pipelines connected with the D ends of the air-cooled heat exchanger (4) and the four-way valve (6) and is provided with the third electromagnetic valve (14).

2. The air-cooled modular unit for improving low-temperature refrigerating capacity of claim 1, wherein: the throttling device (8) is an expansion valve.

3. The air-cooled modular unit for improving low-temperature refrigerating capacity of claim 1, wherein: and a pipeline distributor (41) is arranged in the air-cooled heat exchanger (4).

4. The air-cooled modular unit for improving low-temperature refrigerating capacity of claim 1, wherein: the water-cooled heat exchanger (5) is internally provided with a water inlet pipe (51) and a water outlet pipe (52).

5. The air-cooled modular unit for improving low-temperature refrigerating capacity of claim 1, wherein: the auxiliary heat exchanger module (11) is a solar auxiliary heat exchanger.

6. The air-cooled modular unit for improving low-temperature refrigerating capacity of claim 5, wherein: the number of the solar auxiliary heat exchangers is 1-10, and the solar auxiliary heat exchangers are arranged in a parallel connection mode.

7. The air-cooled modular unit for improving low-temperature refrigerating capacity of claim 1, wherein: the heat collecting device (12) is a solar heat absorbing plate.

8. The air-cooled modular unit for improving low-temperature refrigerating capacity of claim 1, wherein: a coil pipe (121) is arranged in the heat collecting device (12).

9. The air-cooled modular unit for improving low-temperature refrigerating capacity of claim 8, wherein: the diameter of the coil pipe (121) is 6-12 mm.

10. The air-cooled modular unit for improving low-temperature refrigerating capacity of claim 1, wherein: a second branch is introduced between the connection of the gas-liquid separator (7) and the compressor (1) and is connected with the oil-gas separator (3), and an oil return capillary tube (10) is arranged.

Technical Field

The invention belongs to the field of air conditioning systems, and particularly relates to an air-cooled modular unit for improving low-temperature refrigerating capacity.

Background

With the increasing economic level and the increasing living standard of China, the demand of people on air conditioners is continuously improved. Air conditioners have increasingly become the basic facility of buildings and are a necessity in the life and work of people.

With the deepening of energy conservation and emission reduction and the popularization of the coal-to-electric heat pump unit, most of household water heaters in the vast northern areas of China are replaced by the heat pump air-cooling module unit, the time for heating and warming in the northern area is long, the northern rainwater is less, the solar energy resources are relatively rich, the heating capacity of the common heat pump air-cooling module unit is greatly reduced when the environmental temperature is low, and the indoor heating and hot water supply is needed when the environmental temperature is low, so that the great contradiction of actual supply and demand is caused.

Disclosure of Invention

The invention aims to solve the technical problem of providing an air-cooled modular unit which can greatly improve the heating capacity of a system at low temperature and can also manufacture domestic hot water at high temperature.

The solution of the technical problem that this disclosure solves is: an air-cooled modular unit for improving low-temperature refrigerating capacity comprises a compressor, a high-pressure exhaust pipe, an oil-gas separator, an air-cooled heat exchanger, a water-cooled heat exchanger, a four-way valve and an air-liquid separator on a circulation main path, wherein the four-way valve is provided with an A end, a B end, a C end and a D end, the output end of the compressor is connected with one end of the oil-gas separator through the high-pressure exhaust pipe, the other end of the oil-gas separator is connected with the A end of the four-way valve, the B end of the four-way valve is connected with one end of the water-cooled heat exchanger, the other end of the water-cooled heat exchanger is connected with one end of the air-cooled heat exchanger, a throttling device and a first electromagnetic valve are arranged on a pipeline for connecting the water-cooled heat exchanger and the air-cooled heat exchanger, the other end of the air-cooled heat exchanger is connected with the D end of the four-way valve, the C end of the four-way valve is connected with one end of the air-liquid separator, the other end of the air-liquid separator is connected with the input end of the compressor, a first branch is led between pipelines connected with the throttling device and the first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, an auxiliary heat exchanger module and a heat collecting device are connected to the first branch, the first branch is connected between pipelines connected with the D end of the four-way valve and the air-cooled heat exchanger, and the third electromagnetic valve is arranged.

As a further improvement of the above technical solution, the throttling device is an expansion valve.

As a further improvement of the above technical solution, a pipeline distributor is arranged in the air-cooled heat exchanger.

As a further improvement of the technical scheme, a water inlet pipe and a water outlet pipe are arranged in the water-cooled heat exchanger.

As a further improvement of the above technical solution, the auxiliary heat exchanger module is a solar auxiliary heat exchanger.

As a further improvement of the technical scheme, the number of the solar auxiliary heat exchangers is 1-10, and the solar auxiliary heat exchangers are arranged in a parallel connection mode.

As a further improvement of the technical scheme, the heat collecting device is a solar heat absorbing plate.

As a further improvement of the technical scheme, a coil is arranged in the heat collecting device.

As a further improvement of the technical scheme, the diameter of the coil is 6-12 mm.

As a further improvement of the technical scheme, a second branch is introduced between the connection of the gas-liquid separator and the compressor and is connected with the oil-gas separator, and an oil return capillary tube is arranged.

Through the technical scheme, compared with the prior art, the beneficial effects are as follows: the heating capacity of the system at low temperature is greatly improved, and the energy efficiency of domestic hot water can be manufactured at high temperature, so that a large amount of operation energy consumption can be saved, meanwhile, the operation efficiency of the system is greatly improved, the original system is slightly changed, and the cost is slightly increased.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an air cooling module unit for improving low-temperature refrigerating capacity according to the present invention.

The reference numbers in the figures are: the system comprises a compressor 1, a high-pressure exhaust pipe 2, an oil-gas separator 3, an air-cooled heat exchanger 4, a pipeline distributor 41, a water-cooled heat exchanger 5, a water inlet pipe 51, a water outlet pipe 52, a four-way valve 6, a gas-liquid separator 7, a throttling device 8, a first electromagnetic valve 9, an oil return capillary tube 10, an auxiliary heat exchanger module 11, a heat collecting device 12, a coil pipe 121, a second electromagnetic valve 13 and a third electromagnetic valve 14.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The following detailed description of specific embodiments of the invention refers to the accompanying drawings.

As shown in fig. 1, an air-cooled modular unit for improving low-temperature refrigerating capacity comprises a compressor 1, a high-pressure exhaust pipe 2, an oil-gas separator 3, an air-cooled heat exchanger 4, a water-cooled heat exchanger 5, a four-way valve 6 and a gas-liquid separator 7 on a main circulation path, wherein the four-way valve 6 is provided with an end a, an end B, an end C and an end D, an output end of the compressor 1 is connected with one end of the oil-gas separator 3 through the high-pressure exhaust pipe 2, the other end of the oil-gas separator 3 is connected with the end a of the four-way valve 6, the end B of the four-way valve 6 is connected with one end of the water-cooled heat exchanger 5, the other end of the water-cooled heat exchanger 5 is connected with one end of the air-cooled heat exchanger 4, a throttling device 8 and a first electromagnetic valve, the other end of the gas-liquid separator 7 is connected with the input end of the compressor 1, a first branch is led between the pipeline connected with the throttling device 8 and the first electromagnetic valve 9, the first branch is connected with a second electromagnetic valve 13, a third electromagnetic valve 14, an auxiliary heat exchanger module 11 and a heat collecting device 12, and the first branch is connected between the pipeline connected with the D end of the four-way valve 6 and provided with the third electromagnetic valve 14. The air-cooled modular unit can realize the normal operation mode of the air-cooled module, the cooling water operation mode of the air-cooled module, the lifting heating water operation mode of the auxiliary heat exchanger module, the independent operation heating water operation mode of the auxiliary heat exchanger module and the auxiliary cooling water operation mode of the auxiliary heat exchanger module.

The throttling device 8 is an expansion valve, and the flow is adjusted by setting the expansion valve to control the valve. The air-cooled heat exchanger 4 is provided with a pipeline distributor 41 for distributing liquid. The water-cooled heat exchanger 5 is provided with a water inlet pipe 51 and a water outlet pipe 52 for realizing water circulation operation. The auxiliary heat exchanger module 11 is a solar auxiliary heat exchanger, so that the heating capacity of the system at low temperature is greatly improved, and the energy efficiency of domestic hot water can be also improved at high temperature, so that a large amount of operation energy consumption can be saved, the operation efficiency of the system is greatly improved, and the change of the original system is small. The number of the solar auxiliary heat exchangers is 1-10, the solar auxiliary heat exchangers are arranged in a parallel connection mode, and the appropriate number of the solar auxiliary heat exchangers are selected according to the field installation environment, so that the heating effect can be improved. The heat collecting device 12 is a solar heat absorbing plate, and performs heating conversion by absorbing energy through the solar heat absorbing plate. The heat collecting device 12 is provided with a coil 121, and the coil 121 is used for heating. The diameter of the coil 121 is 6-12mm, and the length of the coil 121 is related to the heat exchange area. A second branch is introduced between the connection of the gas-liquid separator 7 and the compressor 1 and is connected with the oil-gas separator 3, and an oil return capillary tube 10 is arranged, so that the compressor 1 is prevented from being started with oil when being started.

The invention can select different functional modes according to the requirements of users:

(1) realize the normal operation mode of the air cooling module

When the system works normally, the second electromagnetic valve 13 and the third electromagnetic valve 14 are closed, the auxiliary heat exchanger module 11 does not participate in the system operation, and the system controls refrigeration and hot water production for normal refrigeration heat pump operation.

(2) Air cooling module refrigeration water running mode

Firstly, the first electromagnetic valve 9 is opened, the second electromagnetic valve 13 and the third electromagnetic valve 14 are closed, the end A and the end D of the four-way valve 6 are communicated, the end C and the end B are communicated, high-temperature and high-pressure refrigerant steam discharged by the compressor 1 passes through the oil-gas separator 3 to complete oil-gas separation, then the air-cooled heat exchanger 4 performs condensation heat exchange, meanwhile, a water circulating system externally connected with a water inlet pipe 52 and a water outlet pipe 51 of the water-cooled heat exchanger 5 operates, the condensed refrigerant passes through the throttling device 8 to be throttled, a refrigerant gas-liquid mixture enters the water-cooled heat exchanger 5 to perform evaporation refrigeration and refrigeration water circulation, the refrigerant steam after the refrigeration water evaporation heat exchange of the water-cooled heat exchanger 5 enters the four-way valve 6 and then enters the gas-liquid separator 7, and finally returns to the input end of the compressor 1 to complete the circulating refrigeration water circulation process of the whole refrigerant.

(3) Auxiliary heat exchanger module for improving hot water heating operation mode

Firstly, opening a second electromagnetic valve 13 and a third electromagnetic valve 14 to form a bypass loop, connecting an A end and a B end of a four-way valve 6, connecting a C end and a D end, completing oil-gas separation of high-temperature and high-pressure refrigerant steam discharged by a compressor 1 through an oil-gas separator 3, then condensing the high-temperature and high-pressure refrigerant steam by a water-cooling heat exchanger 5 to prepare hot water, simultaneously operating a water circulation system externally connected with a water inlet pipe 52 and a water outlet pipe 51 of the water-cooling heat exchanger 5, throttling the condensed refrigerant by a throttling device 8, dividing the refrigerant into two paths, enabling one path of the refrigerant to enter an auxiliary heat exchanger module 11 through the second electromagnetic valve 13, and enabling the other path of the refrigerant to enter an air-cooling radiator through a first electromagnetic valve 9; after entering the auxiliary heat exchanger module 11, the refrigerant gas-liquid mixture is subjected to evaporation heat exchange under the action of solar energy, so that the evaporation heat exchange can be completed in all weather; the refrigerant steam after the evaporation and heat exchange of the auxiliary heat exchanger module 11 is mixed with the refrigerant steam evaporated in the air-cooled heat exchanger 4, enters the four-way valve 6, then enters the gas-liquid separator 7, and finally returns to the input end of the compressor 1, so that the whole circulation heating process of the refrigerant is completed.

(4) Auxiliary heat exchanger module independent hot water heating operation mode

Firstly, the first electromagnetic valve 9 is closed, the second electromagnetic valve 13 and the third electromagnetic valve 14 are opened to form a bypass loop, the A end and the B end of the four-way valve 6 are communicated, the C end and the D end are communicated, high-temperature and high-pressure refrigerant steam discharged by the compressor 1 is subjected to oil-gas separation through the oil-gas separator 3, then the water-cooled heat exchanger 5 is condensed to produce hot water, meanwhile, a water circulating system externally connected with a water inlet pipe 52 and a water outlet pipe 51 of the water-cooled heat exchanger 5 operates, the condensed refrigerant is throttled by the throttling device 8 and enters the auxiliary heat exchanger module 11 through the second electromagnetic valve 13, and after entering the auxiliary heat exchanger module 11, the refrigerant gas-liquid mixture is subjected to evaporation heat exchange under the action of solar energy, so that the evaporation heat exchange can be completed in all weather; refrigerant steam after being subjected to evaporation and heat exchange by the auxiliary heat exchanger module 11 enters the four-way valve 6, then enters the gas-liquid separator 7 and finally returns to the input end of the compressor 1, so that the whole circulating heating process of the refrigerant is completed.

(5) Auxiliary cooling water operation mode of auxiliary heat exchanger module

Firstly, the second electromagnetic valve 13 and the third electromagnetic valve 14 are opened to form a bypass loop, the A end and the D end of the four-way valve 6 are communicated, the C end and the B end are communicated, high-temperature and high-pressure refrigerant steam discharged by the compressor 1 is firstly subjected to oil-gas separation through the oil-gas separator 3 and then is divided into two paths, one path enters the air-cooled heat exchanger 4 for condensation and heat exchange, the other path enters the auxiliary heat exchanger module 11 for heat exchange, the combination of the two heat exchangers can realize the function of improving the supercooling degree of the condensed refrigerant liquid and the refrigeration efficiency of the lifting system, the refrigerant liquid after condensation and supercooling enters the water-cooled heat exchanger 5 for refrigeration cycle after throttling of the throttling device 8, meanwhile, a water circulation system connected with a water inlet pipe 52 and a water inlet pipe 51 of the water-cooled heat exchanger 5 operates, and the refrigerant steam after evaporation in the water-cooled heat exchanger 5, enters a four-way reversing valve, then enters a gas-liquid separator 7, and finally returns to the input end of the compressor 1, thus completing the circulating refrigeration cycle process of the whole refrigerant.

In northern areas, the auxiliary evaporation heat exchange effect is also guaranteed when the sunny days are more and the ambient temperature is lower; when the environmental temperature is very low, the evaporation temperature of the refrigerant in the common air-cooled heat exchanger is very low, the evaporation pressure is very low, the pressure ratio of the compressor is very high, the evaporation heat exchange process of the refrigerant cannot be effectively finished, the heating effect at low temperature cannot be ensured, and the wet compression of the compressor is easily caused, so that the compressor is damaged; the solar auxiliary radiator absorbs solar radiation short waves by utilizing radiation heat exchange, and the degree of influence of the solar auxiliary radiator by the environmental temperature is limited.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.