CN216744975U - Integrated barrel pump heat management system - Google Patents

Abstract

The utility model relates to an integrated form barrel pump heat management technical field discloses an integrated form barrel pump heat management system, include: the low-pressure barrel pump assembly comprises a low-pressure circulating barrel and a conveying assembly, the conveying assembly comprises a liquid pump, and an inlet of the liquid pump is communicated with an outlet of the low-pressure circulating barrel; refrigerating system, including the compressor that communicates in proper order, the condenser, first refrigeration valve, economic ware and second refrigeration valve, the refrigerant behind the second refrigeration valve throttle gets into low pressure circulation bucket, the compressor is configured to stop during natural cooling and move during the forced cooling, refrigerating system still includes evaporimeter and first air suction valve, first air suction valve can be with gaseous refrigerant drainage to the condenser in the low pressure circulation bucket and condense, the import and the export intercommunication of liquid pump of evaporimeter, the export and the low pressure circulation bucket intercommunication of evaporimeter. The utility model discloses an integrated form barrel pump heat management system has not only reduced heat management system's occupation space, has still reduced heat management system's investment cost and maintenance cost.

Description

Integrated barrel pump heat management system

Technical Field

The utility model relates to an integrated form barrel pump heat management technical field especially relates to an integrated form barrel pump heat management system.

Background

The existing heat management system comprises a refrigeration system and a water cooling unit, wherein the water cooling unit comprises a coil heat exchanger and a water pump, the coil heat exchanger is arranged outside a condenser of the refrigeration system, when the external environment temperature is higher, the components needing cooling are forcibly cooled, and the cooling capacity generated by the operation of the refrigeration system can be transmitted to the components through the circulating water of the water cooling unit, so that the cooling of the components is realized; when the external environment temperature is lower, carry out the natural cooling to the part that needs the refrigerated, the circulating water in the water chiller can be gone from the heat that the part absorbed and dispel to the external environment, realizes the reduction of the internal circulating water temperature of water chiller to reach the purpose of cooling part. Because the specific heat capacity of the circulating water in the water chiller unit is large, the circulating water cannot change phase before and after the cooling part, so that the pipeline of the water chiller unit is thick, and a water pump with large power needs to be equipped at the moment, so that the occupied space of the water chiller unit is increased, and the investment cost of the water chiller unit is also increased. In addition, most of the existing water cooling units are of open structures, so that dirt is easily accumulated in the pipelines of the water cooling units, the pipelines are easy to corrode, and the maintenance cost of the water cooling units is increased.

SUMMERY OF THE UTILITY MODEL

Based on above, an object of the utility model is to provide an integrated form barrel pump heat management system, on can realizing carrying out forced cooling and natural cooling's basis to the part, not only reduced heat management system's occupation space, still reduced heat management system's investment cost and maintenance cost.

In order to achieve the purpose, the utility model adopts the following technical proposal:

an integrated barrel pump thermal management system comprising: the low-pressure barrel pump assembly comprises a low-pressure circulating barrel and a conveying assembly, wherein a refrigerant is filled in the low-pressure circulating barrel, the conveying assembly comprises a liquid pump, and an inlet of the liquid pump is communicated with a liquid outlet of the low-pressure circulating barrel; the refrigerating system comprises a compressor, a condenser, a first refrigerating valve, an economizer and a second refrigerating valve which are sequentially communicated, the refrigerant throttled by the second refrigeration valve enters the low-pressure circulation barrel, the compressor is configured to stop when naturally cooled and operate when forcibly cooled, the refrigerant in the economizer in a gaseous state can flow back to the inlet of the compressor when the compressor is on, the refrigerant in the low-pressure circulation barrel in a gaseous state can flow back to the inlet of the compressor when the compressor is turned on, the refrigeration system also comprises an evaporator and a first air suction valve, the first air suction valve can guide the refrigerant in the gas state in the low-pressure circulating barrel to the condenser for condensation, the inlet of the evaporator is communicated with the outlet of the liquid pump, the outlet of the evaporator is communicated with the low-pressure circulating barrel, the first suction valve is configured to be closed when the compressor is operated and to be opened when the compressor is stopped.

As a preferred aspect of the integrated barrel pump thermal management system, the delivery assembly further includes a delivery filter disposed upstream of the liquid pump and having an inlet in communication with the liquid outlet of the low pressure recycle barrel, and a pump body check valve disposed downstream of the liquid pump and having an outlet in communication with the evaporator.

As a preferred scheme of the integrated barrel pump heat management system, the number of the conveying assemblies is at least two, at least two conveying assemblies are arranged in parallel and are communicated with the evaporator through a first communication header pipe, and a first header pipe stop valve is arranged on the first communication header pipe.

As a preferable aspect of the integrated barrel pump heat management system, the integrated barrel pump heat management system further includes a low pressure gas pipe and a second suction valve provided on the low pressure gas pipe, an inlet of the low pressure gas pipe communicates with a top of the low pressure circulation barrel, an outlet of the low pressure gas pipe communicates with an inlet of the compressor, and the second suction valve is configured to be opened when the compressor is operated and closed when the compressor is stopped.

As an integrated form barrel pump thermal management system's preferred scheme, integrated form barrel pump thermal management system still including drawing and penetrating the oil return gas circuit, drawing and penetrate oil return liquid way and ejector, draw the flow area who penetrates the oil return gas circuit with draw the flow area who penetrates oil return liquid way all to be less than the flow area of low pressure gas pipe, draw the import that penetrates the oil return gas circuit with the import intercommunication of condenser, draw the import that penetrates the oil return liquid way with the middle part intercommunication of low pressure circulation bucket, draw the export that penetrates the oil return gas circuit with draw the export that penetrates oil return liquid way respectively with two import intercommunications of ejector, the export of ejector with low pressure gas pipe intercommunication and the intercommunication position between them is located the upper reaches of second suction valve.

As an integrated form barrel pump thermal management system's preferred scheme, it draws and penetrates the stop valve to be equipped with first drawing on the injection return gas circuit, draw to penetrate to be equipped with on the return oil liquid circuit and draw and penetrate filter and second and draw and penetrate the stop valve, the ejector through draw penetrate house steward with low-pressure gas pipe intercommunication, draw to penetrate and be equipped with the third on the house steward and draw and penetrate the stop valve, first draw penetrate the stop valve the second draw penetrate the stop valve and the third draws penetrate the stop valve and all be configured into open just when the compressor stops.

As a preferable scheme of the integrated barrel pump heat management system, the refrigeration system further comprises an oil separator, the oil separator is positioned between the compressor and the condenser, and lubricating oil in the oil separator can flow back to an inlet of the compressor.

As a preferable scheme of the integrated barrel pump heat management system, the refrigeration system further includes a medium pressure gas pipe, an inlet of the medium pressure gas pipe is communicated with the top of the economizer, an outlet of the medium pressure gas pipe is communicated with an inlet of the compressor, the medium pressure gas pipe is provided with a gas supply check valve and a third refrigeration valve, and the gas supply check valve is configured to be opened when the compressor is operated and to be closed when the compressor is stopped.

As a preferred solution of the integrated barrel pump heat management system, a refrigeration filter is provided downstream of the first refrigeration valve.

As a preferred scheme of the integrated barrel pump heat management system, the number of the evaporators is at least two, at least two evaporators are arranged in parallel and are communicated with the low-pressure circulating barrel through a second communication header pipe, and a second header pipe stop valve is arranged on the second communication header pipe.

The utility model has the advantages that: the utility model discloses an integrated form barrel pump heat management system, the low pressure barrel pump subassembly that adds has replaced current water chiller, because the refrigerant is direct to be cooled down the part through the evaporimeter, and the refrigerant takes place the phase transition in the evaporimeter, therefore, the flow of refrigerant is far less than the flow of the circulating water that flows in the water chiller to the flow area of the pipeline of low pressure barrel pump subassembly has greatly reduced, has reduced the occupation space of heat management system; the flow of the flowing refrigerant is far less than the flow of the existing circulating water, so that the power of the liquid pump during actual working is far less than that of the existing water pump, the investment cost of the low-pressure barrel pump assembly is reduced, the low-pressure barrel pump assembly is not communicated with the outside, the possibility that dirt and corrosion are accumulated in a pipeline of the low-pressure barrel pump assembly is greatly reduced, and the cost for maintaining the low-pressure barrel pump assembly is saved.

Drawings

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

FIG. 1 is a schematic diagram of an integrated barrel pump thermal management system according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of an integrated barrel pump thermal management system with forced cooling according to an embodiment of the present invention;

fig. 3 is a schematic view of an integrated barrel pump thermal management system according to an embodiment of the present invention during natural cooling.

In the figure:

11. a low pressure recycle bin; 111. a low pressure service valve; 12. a delivery assembly; 121. a liquid pump; 122. a delivery filter; 123. a pump body check valve; 13. a first communication manifold; 131. a first main pipe stop valve; 14. a second communication manifold; 141. a second manifold cut-off valve;

21. a compressor; 22. a condenser; 23. a first refrigeration valve; 24. an economizer; 241. an economizer service valve; 25. a second refrigeration valve; 26. an evaporator; 27. a first air intake valve; 28. an oil separator; 281. an oil maintenance valve; 29. a medium pressure gas tube; 291. a gas supply check valve; 292. a third refrigeration valve; 210. a refrigeration filter; 211. a refrigeration check valve; 212. a refrigeration communication valve; 213. an oil return valve;

31. a low pressure gas pipe; 311. a second suction valve; 32. injecting an oil return gas path; 321. a first injection stop valve; 33. injecting an oil return liquid path; 331. an ejection filter; 332. a second injection stop valve; 34. an ejector; 35. a third injection stop valve;

100. a water pump; 200. a water storage tank; 300. an energy storage device.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to 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 or a removable 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 in specific cases to those skilled in the art.

The embodiment provides an integrated barrel pump heat management system, as shown in fig. 1, which includes a low-pressure barrel pump assembly and a refrigeration system, the low-pressure barrel pump assembly includes a low-pressure circulation barrel 11 and a delivery assembly 12, a refrigerant is contained in the low-pressure circulation barrel 11, the delivery assembly 12 includes a liquid pump 121, an inlet of the liquid pump 121 is communicated with a liquid outlet of the low-pressure circulation barrel 11, the liquid outlet of the low-pressure circulation barrel 11 is located at a bottom end, the refrigeration system includes a compressor 21, a condenser 22, a first refrigeration valve 23, an economizer 24 and a second refrigeration valve 25 which are sequentially communicated, the compressor 21 is a screw compressor, the refrigerant flowing through the second refrigeration valve 25 enters the low-pressure circulation barrel 11, the compressor 21 is configured to stop during natural cooling and operate during strong cooling, gaseous refrigerant in the economizer 24 can flow back to an intermediate-pressure stage inlet of the compressor 21 when the compressor 21 is turned on, thereby achieving improvement of refrigeration efficiency of the refrigeration system, the refrigerant in a gaseous state in the low pressure circulation barrel 11 can flow back to the low pressure stage inlet of the compressor 21 when the compressor 21 is turned on, so that the refrigerant in a gaseous state flows back to the compressor 21 and enters the next cycle, the refrigeration system further comprises an evaporator 26 and a first suction valve 27, the first suction valve 27 can lead the refrigerant in a gaseous state in the low pressure circulation barrel 11 to the condenser 22 for condensation, an inlet of the evaporator 26 is communicated with an outlet of the liquid pump 121, an outlet of the evaporator 26 is communicated with the low pressure circulation barrel 11, and the first suction valve 27 is configured to be turned off when the compressor 21 is operated and the compressor 21 is turned on when the compressor 21 is stopped. The number of condensers 22 in this embodiment is two, and the two condensers 22 are arranged in parallel. In other embodiments, the number of the condensers 22 may also be one or more than two, and different condensers 22 may be connected in parallel or in series, which is not limited in this embodiment.

Specifically, during natural cooling, as shown in fig. 3, the compressor 21 is stopped, the first air suction valve 27 is capable of guiding the gaseous refrigerant in the low-pressure circulation tub 11 to the condenser 22, the gaseous refrigerant releases heat to the outside to cool the refrigerant at the time when the condenser 22 is in contact with the outside environment and the temperature of the outside environment is lowered, the cooled refrigerant sequentially flows through the first refrigeration valve 23, the economizer 24, and the second refrigeration valve 25 and then returns to the low-pressure circulation tub 11, the liquid refrigerant in the low-pressure circulation tub 11 is conveyed to the evaporator 26 by the liquid pump 121 to absorb heat, and the heat-absorbed refrigerant returns to the low-pressure circulation tub 11 again. The first and second refrigeration valves 23 and 25 of the present embodiment are ball valves.

In the integrated barrel pump heat management system provided by the embodiment, the added low-pressure barrel pump component replaces the existing water cooling unit, and as the refrigerant directly cools the components through the evaporator 26 and the refrigerant undergoes phase change in the evaporator 26, the flow rate of the refrigerant is far less than that of circulating water flowing in the water cooling unit, so that the flow area of a pipeline of the low-pressure barrel pump component is greatly reduced, and the occupied space of the heat management system is reduced; because the flow rate of the flowing refrigerant is far less than the flow rate of the existing circulating water, the power of the liquid pump 121 during actual operation is far less than that of the existing water pump, so that the investment cost of the low-pressure barrel pump assembly is reduced, and because the low-pressure barrel pump assembly is not communicated with the outside, the possibility of dirt and corrosion accumulated in the pipeline of the low-pressure barrel pump assembly is greatly reduced, and the cost for maintaining the low-pressure barrel pump assembly is saved.

As shown in fig. 1, the feed assembly 12 of the present embodiment further includes a feed filter 122 and a pump body check valve 123, the pump body check valve 123 is a one-way valve, the feed filter 122 is disposed upstream of the liquid pump 121 and an inlet of the feed filter 122 is communicated with an outlet of the low-pressure circulation tank 11, the pump body check valve 123 is disposed downstream of the liquid pump 121 and an outlet of the pump body check valve 123 is communicated with the evaporator 26. The delivery filter 122 can filter the refrigerant entering the liquid pump 121, thereby removing impurities contained in the refrigerant, reducing the possibility that the impurities in the refrigerant block the liquid pump 121, and the pump body check valve 123 can prevent the refrigerant in the pipeline from flowing backwards, reducing the possibility that the liquid pump 121 is reversed or even damaged by the backflow of the refrigerant, so that the refrigerant at the outlet of the liquid pump 121 can only enter the evaporator 26 through the pump body check valve 123.

As shown in fig. 1, the number of the conveying assemblies 12 in this embodiment is two, the two conveying assemblies 12 are arranged in parallel and are both communicated with the evaporator 26 through the first communication manifold 13, the first communication manifold 13 is provided with a first manifold stop valve 131, the first manifold stop valve 131 is a ball valve, and the first manifold stop valve 131 is used for controlling the communication state of the conveying assemblies 12 and the evaporator 26. In other embodiments, the number of the delivery assemblies 12 can be one or not less than three, and when the number of the delivery assemblies 12 is not less than three, the delivery assemblies 12 are arranged in parallel and are all communicated with the evaporator 26 through the first communication manifold 13, which is selected according to the actual flow rate of the refrigerant and the power of the liquid pump 121.

As shown in fig. 1, the integrated barrel pump thermal management system of the present embodiment further includes a low pressure gas pipe 31 and a second suction valve 311 provided on the low pressure gas pipe 31, an inlet of the low pressure gas pipe 31 communicates with the top of the low pressure circulation barrel 11, an outlet of the low pressure gas pipe 31 communicates with a low pressure stage inlet of the compressor 21, and the second suction valve 311 is configured to be opened when the compressor 21 is operated and to be closed when the compressor 21 is stopped. Specifically, when the integrated barrel pump heat management system operates normally, the gaseous refrigerant in the low-pressure circulation barrel 11 is located at the upper part, the liquid refrigerant is located at the lower part, and when the compressor 21 of the refrigeration system operates, the second suction valve 311 is opened, and at this time, the gaseous refrigerant at the upper part of the low-pressure circulation barrel 11 can be sucked to the low-pressure stage inlet of the compressor 21 by the second suction valve 311, so that the compressor 21 compresses the refrigerant with lower pressure, and the operation of the refrigeration system is realized; when the compressor 21 of the refrigeration system is stopped, the second suction valve 311 is closed, and the gaseous refrigerant in the upper portion of the low pressure circulation tank 11 cannot flow to the low pressure stage inlet of the compressor 21.

As shown in fig. 1, the refrigeration system of the present embodiment further includes an oil separator 28 and an oil return valve 213, the oil separator 28 is located between the compressor 21 and the condenser 22, the oil return valve 213 is used for controlling a communication state between the oil separator 28 and a high-pressure stage inlet of the compressor 21, the lubricating oil in the oil separator 28 can flow back to the high-pressure stage inlet of the compressor 21 through the oil return valve 213, and the oil return valve 213 is a ball valve. Because a large amount of lubricating oil is needed when the compressor 21 compresses the refrigerant, the refrigerant with higher pressure at the outlet of the compressor 21 contains a lot of lubricating oil, and the oil separator 28 arranged at the outlet of the compressor 21 can primarily separate the lubricating oil in the refrigerant, so that most of the lubricating oil in the refrigerant is separated, and the lubricating oil in the oil separator 28 is guided to the high-pressure stage inlet of the compressor 21 again, so that the compressor 21 can normally compress the refrigerant and boost the pressure of the refrigerant to a higher pressure value.

The refrigeration system of the present embodiment further includes a refrigeration check valve 211 and a refrigeration communication valve 212, the refrigeration check valve 211 and the refrigeration communication valve 212 are located between the high-pressure stage outlet of the compressor 21 and the oil separator 28, and a mixture of the refrigerant and the lubricating oil discharged from the high-pressure stage outlet of the compressor 21 can flow through the refrigeration check valve 211 and the refrigeration communication valve 212 in sequence to flow into the oil separator 28.

The oil separator 28 of the refrigeration system cannot completely separate the lubricating oil in the refrigerant, so that the remaining lubricating oil flows to the low-pressure circulation tub 11 along with the refrigerant, and as the operation time of the integrated tub pump heat management system increases, the lubricating oil stored in the low-pressure circulation tub 11 increases, and therefore, the lubricating oil in the low-pressure circulation tub 11 needs to be introduced to the compressor 21. Specifically, as shown in fig. 1, the integrated barrel pump thermal management system of this embodiment further includes an injection oil return gas path 32, an injection oil return liquid path 33, and an injector 34, where a flow area of the injection oil return gas path 32 and a flow area of the injection oil return liquid path 33 are both smaller than a flow area of the low-pressure gas pipe 31, an inlet of the injection oil return gas path 32 is communicated with an inlet of the condenser 22, an inlet of the injection oil return liquid path 33 is communicated with the middle portion of the low-pressure circulation barrel 11, an outlet of the injection oil return gas path 32 and an outlet of the injection oil return liquid path 33 are respectively communicated with two inlets of the injector 34, an outlet of the injector 34 is communicated with the low-pressure gas pipe 31, and a communication position of the outlet and the low-pressure gas pipe 31 is located at an upstream of the second suction valve 311.

Specifically, the injection oil return path 33 extracts a small part of a mixture containing lubricating oil and refrigerant from the low-pressure circulation barrel 11, the pressure of the mixture is reduced and the speed of the mixture is increased after the mixture passes through a region with a suddenly reduced flow area in the injector 34, so that the pressure in a local region in the injector 34 is negative pressure to form a negative pressure region, the injection oil return path 32 is communicated with the negative pressure region, and the gaseous refrigerant in the low-pressure circulation barrel 11 is extracted to the injector 34 and further enters a low-pressure stage inlet of the compressor 21, so that the purpose of extracting the lubricating oil in the low-pressure circulation barrel 11 to the compressor 21 is achieved, and the phenomenon that the lubricating oil accumulated in the low-pressure circulation barrel 11 is excessive to cause abnormal operation of the refrigeration system is avoided.

As shown in fig. 1, the injection oil return gas path 32 of this embodiment is provided with a first injection stop valve 321, the first injection stop valve 321 is a ball valve, the injection oil return liquid path 33 is provided with an injection filter 331 and a second injection stop valve 332, the second injection stop valve 332 is a ball valve, the injector 34 is communicated with the low-pressure gas pipe 31 through an injection header pipe, the injection header pipe is provided with a third injection stop valve 35, the third injection stop valve 3535 is a ball valve, and the first injection stop valve 321, the second injection stop valve 332 and the third injection stop valve 35 are all configured to be opened when the compressor 21 operates and closed when the compressor 21 stops. Specifically, when the compressor 21 of the refrigeration system operates, the lubricating oil in the low-pressure circulation tank 11 can be returned to the compressor 21 by opening the first injection cut-off valve 321, the second injection cut-off valve 332, and the third injection cut-off valve 35, so that the lubricating oil is pumped to the compressor 21.

Specifically, the economizer 24 of the present embodiment is a flash evaporator, the refrigerant discharged from the second refrigeration valve 25 can enter the economizer 24, the refrigeration system further includes a medium pressure gas pipe 29, an inlet of the medium pressure gas pipe 29 is communicated with a top of the economizer 24, an outlet of the medium pressure gas pipe 29 is communicated with an inlet of a medium pressure stage of the compressor 21, the medium pressure gas pipe 29 is provided with a gas supply check valve 291 and a third refrigeration valve 292, the gas supply check valve 291 is a one-way valve, the gas supply check valve 291 is configured to be opened when the compressor 21 is operated and to be closed when the compressor 21 is stopped, and the third refrigeration valve 292 is a ball valve.

Specifically, liquid refrigerant enters the economizer 24 through the first refrigeration valve 23 and is flashed into gas-liquid two-phase refrigerant, wherein part of the liquid refrigerant is evaporated in the economizer 24, the gaseous refrigerant generated by flashing and evaporation returns to the intermediate-pressure stage inlet of the compressor 21 for recompression, the heat of the liquid refrigerant which is not evaporated is taken away by the evaporated refrigerant, the temperature is reduced to the saturation temperature corresponding to the intermediate pressure, and then the refrigerant enters the second refrigeration valve 25, and the refrigerant flowing out of the second refrigeration valve 25 enters the low-pressure circulation barrel 11, so that the refrigerating capacity of the refrigeration system is increased, and the purpose of energy conservation is achieved.

As shown in fig. 1, a refrigeration filter 210 is disposed downstream of the first refrigeration valve 23 in the present embodiment, the refrigeration filter 210 is capable of filtering the refrigerant flowing out through the first refrigeration valve 23, so that the refrigerant in the condenser 22 passes through the first refrigeration valve 23 and then enters the economizer 24 through the refrigeration filter 210, so that the liquid high-pressure refrigerant is reduced in pressure to an intermediate-pressure gas-liquid mixture and enters the economizer 24, as shown in fig. 2, the gaseous refrigerant in the economizer 24 is pumped to an intermediate-pressure stage inlet of the compressor 21, the liquid intermediate-pressure refrigerant becomes a low-pressure gaseous mixture through the second refrigeration valve 25 and enters the low-pressure circulation barrel 11, the liquid refrigerant in the low-pressure circulation barrel 11 is sent to the evaporator 26 by the delivery assembly 12 for absorbing heat, the heat-absorbed refrigerant is changed into a liquid refrigerant and sent back to the low-pressure circulation barrel 11, the gaseous refrigerant in the low-pressure circulation barrel 11 is sucked to a low-pressure stage inlet of the compressor 21 by the second suction valve 311, the compressor 21 can compress the low-pressure refrigerant in a gaseous state to form a high-pressure refrigerant in a gaseous state.

As shown in fig. 1, the evaporators 26 of this embodiment are plate heat exchangers, the number of the plate heat exchangers is four, the four evaporators 26 are arranged in parallel and are all communicated with the low-pressure circulation barrel 11 through the second communication header pipe 14, the second communication header pipe 14 is provided with a second header pipe stop valve 141, the second header pipe stop valve 141 is a ball valve, and the second header pipe stop valve 141 can realize the communication or disconnection between the evaporators 26 and the low-pressure circulation barrel 11. Each evaporator 26 corresponds to one water suction pump 100, one water storage tank 200 and one energy storage device 300, when the integrated barrel pump heat management system is used for refrigeration, refrigerant in the evaporator 26 can absorb heat from water in the evaporator 26, the flow directions of the refrigerant and the water in the evaporator 26 are opposite, namely the refrigerant and the water are subjected to countercurrent heat exchange, and the cooled water can absorb heat in the energy storage device 300, so that the temperature of the energy storage device 300 is reduced.

In other embodiments, the number of the evaporators 26 may also be one, two, three or more than four, and each evaporator 26 is disposed corresponding to one water pump 100, one water storage tank 200 and one energy storage device 300, so that each evaporator 26 can cool one energy storage device 300. Because the refrigerant entering the evaporator 26 is a liquid refrigerant and the refrigerant flowing out of the evaporator 26 is a gaseous or gas-liquid mixed refrigerant, the flow area of the tube communicating with the outlet of the evaporator 26 is larger than the flow area of the tube communicating with the inlet of the evaporator 26, ensuring that the refrigerant can smoothly flow into and out of the evaporator 26, and enabling the integrated barrel pump thermal management system to smoothly operate.

For convenience of maintenance, as shown in fig. 1, the oil separator 28 of the present embodiment is provided with an oil maintenance valve 281, the economizer 24 is provided with an economizer maintenance valve 241, and the low-pressure circulation drum 11 is provided with a low-pressure maintenance valve 111, the oil maintenance valve 281 is opened when the oil separator 28 is maintained and the system is in a closed state during normal operation, the economizer maintenance valve 241 is opened when the economizer 24 is maintained and the system is in a closed state during normal operation, and the low-pressure maintenance valve 111 is opened when the low-pressure circulation drum 11 is maintained and the system is in a closed state during normal operation.

It should be noted that, in other embodiments, the compressor 21 may also be a scroll compressor, in which case, the gaseous refrigerant in the low-pressure circulation barrel 11 is sucked to the inlet of the compressor 21 by the second suction valve 311, the gaseous refrigerant in the economizer 24 can flow back to the inlet of the compressor 21 when the compressor 21 is turned on, the lubricating oil in the low-pressure circulation barrel 11 is pumped to the inlet of the compressor 21, and the lubricating oil separated by the oil separator 28 is diverted to the inlet of the compressor 21.

It should be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (10)

1. An integrated barrel pump thermal management system, comprising:

the low-pressure barrel pump assembly comprises a low-pressure circulating barrel (11) and a conveying assembly (12), refrigerant is contained in the low-pressure circulating barrel (11), the conveying assembly (12) comprises a liquid pump (121), and an inlet of the liquid pump (121) is communicated with a liquid outlet of the low-pressure circulating barrel (11);

the refrigeration system comprises a compressor (21), a condenser (22), a first refrigeration valve (23), an economizer (24) and a second refrigeration valve (25) which are communicated in sequence, refrigerant throttled by the second refrigeration valve (25) enters the low-pressure circulation barrel (11), the compressor (21) is configured to stop during natural cooling and operate during forced cooling, refrigerant in a gaseous state in the economizer (24) can flow back to an inlet of the compressor (21) when the compressor (21) is started, refrigerant in a gaseous state in the low-pressure circulation barrel (11) can flow back to the inlet of the compressor (21) when the compressor (21) is started, the refrigeration system further comprises an evaporator (26) and a first suction valve (27), and the first suction valve (27) can guide the refrigerant in a gaseous state in the low-pressure circulation barrel (11) to the condenser (22) for condensation, the inlet of the evaporator (26) is communicated with the outlet of the liquid pump (121), the outlet of the evaporator (26) is communicated with the low-pressure circulation barrel (11), and the first air suction valve (27) is configured to be closed when the compressor (21) is operated and to be opened when the compressor (21) is stopped.

2. The integrated barrel pump thermal management system of claim 1, wherein the delivery assembly (12) further comprises a delivery filter (122) and a pump body check valve (123), the delivery filter (122) being disposed upstream of the liquid pump (121) and having an inlet in communication with the liquid outlet of the low pressure circulation barrel (11), the pump body check valve (123) being disposed downstream of the liquid pump (121) and having an outlet in communication with the evaporator (26).

3. The integrated barrel pump thermal management system according to claim 1, wherein the number of the delivery assemblies (12) is at least two, at least two of the delivery assemblies (12) are arranged in parallel and are communicated with the evaporator (26) through a first communication manifold (13), and a first manifold cut-off valve (131) is arranged on the first communication manifold (13).

4. The integrated barrel pump thermal management system according to claim 1, further comprising a low pressure gas pipe (31) and a second suction valve (311) disposed on the low pressure gas pipe (31), an inlet of the low pressure gas pipe (31) communicating with a top of the low pressure circulation barrel (11), an outlet of the low pressure gas pipe (31) communicating with an inlet of the compressor (21), the second suction valve (311) configured to be opened when the compressor (21) is operated and closed when the compressor (21) is stopped.

5. The integrated barrel pump thermal management system of claim 4, further comprising an injection oil return gas path (32), an injection oil return fluid path (33), and an injector (34), the flow area of the injection oil return gas path (32) and the flow area of the injection oil return liquid path (33) are both smaller than the flow area of the low-pressure gas pipe (31), the inlet of the injection oil return gas path (32) is communicated with the inlet of the condenser (22), the inlet of the injection oil return liquid path (33) is communicated with the middle part of the low-pressure circulating barrel (11), the outlet of the injection oil return gas path (32) and the outlet of the injection oil return liquid path (33) are respectively communicated with two inlets of the injector (34), the outlet of the ejector (34) is communicated with the low-pressure gas pipe (31) and the communication position of the outlet of the ejector and the low-pressure gas pipe is positioned at the upstream of the second suction valve (311).

6. The integrated barrel pump heat management system according to claim 5, wherein a first injection stop valve (321) is arranged on the injection oil return gas path (32), an injection filter (331) and a second injection stop valve (332) are arranged on the injection oil return path (33), the injector (34) is communicated with the low-pressure gas pipe (31) through an injection header pipe, a third injection stop valve (35) is arranged on the injection header pipe, and the first injection stop valve (321), the second injection stop valve (332) and the third injection stop valve (35) are all configured to be opened when the compressor (21) operates and closed when the compressor (21) stops.

7. The integrated barrel pump thermal management system according to claim 1, wherein the refrigeration system further comprises an oil separator (28), the oil separator (28) being located between the compressor (21) and the condenser (22), the lubrication oil within the oil separator (28) being able to flow back to the inlet of the compressor (21).

8. The integrated barrel pump thermal management system according to claim 1, wherein the refrigeration system further comprises a medium pressure gas pipe (29), an inlet of the medium pressure gas pipe (29) is communicated with a top of the economizer (24), an outlet of the medium pressure gas pipe (29) is communicated with an inlet of the compressor (21), and a gas supplement check valve (291) and a third refrigeration valve (292) are disposed on the medium pressure gas pipe (29), wherein the gas supplement check valve (291) is configured to be opened when the compressor (21) is operated and to be closed when the compressor (21) is stopped.

9. The integrated barrel pump thermal management system according to claim 1, wherein a refrigeration filter (210) is disposed downstream of the first refrigeration valve (23).

10. The integrated barrel pump thermal management system according to claim 1, wherein the number of the evaporators (26) is at least two, at least two of the evaporators (26) are arranged in parallel and are communicated with the low-pressure circulation barrel (11) through a second communication header (14), and a second header stop valve (141) is arranged on the second communication header (14).

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