CN213747405U

CN213747405U - Heat exchange system and air conditioner

Info

Publication number: CN213747405U
Application number: CN202022873416.8U
Authority: CN
Inventors: 周宏亮; 大森宏; 刘和成
Original assignee: Midea Group Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-07-20
Anticipated expiration: 2030-12-04

Abstract

The utility model provides a heat transfer system and air conditioner. Wherein, heat transfer system puts including: a first heat exchanger; the second heat exchanger is arranged in the energy storage device and is connected with the first heat exchanger through a pipeline to form a first loop; the energy storage device is internally provided with an energy storage material and is used for exchanging heat with the second heat exchanger; the pumping device is arranged in the first circuit and used for driving the refrigerant in the first circuit to flow; wherein, a plurality of heat exchange flow paths are arranged in at least one of the first heat exchanger and the second heat exchanger. The technical scheme of the utility model, through the heat transfer flow path who improves the heat exchanger, can effectively reduce the loss of refrigerant on the way in the heat transfer flow path, under the condition of same circulation volume, require to reduce pumping device's lift to reduce heat transfer system's energy consumption, be favorable to improving the operation efficiency of air conditioner.

Description

Heat exchange system and air conditioner

Technical Field

The application relates to the technical field of air conditioners, in particular to a heat exchange system and an air conditioner.

Background

At present, in a heat exchanger of an energy storage air conditioner, a refrigerant flows along a single flow path, and because the flow distance of the refrigerant in the flow path is long and the internal flow resistance in the flow path is large, great loss along the way can be generated in the flow process of the refrigerant, the requirement can be met only by a large water pump lift, so that the energy consumption is increased and the cost is increased under the condition of the same circulation quantity.

SUMMERY OF THE UTILITY MODEL

According to an embodiment of the present invention, it is intended to improve at least one of technical problems existing in the prior art or the related art.

To this end, it is an object according to the embodiments of the present invention to provide a heat exchange system.

According to another object of the embodiments of the present invention, there is provided an air conditioner.

In order to achieve the above object, according to an embodiment of the first aspect of the present invention, there is provided a heat exchange system including: a first heat exchanger; the second heat exchanger is arranged in the energy storage device and is connected with the first heat exchanger through a pipeline to form a first loop; the energy storage device is internally provided with an energy storage material and is used for exchanging heat with the second heat exchanger; the pumping device is arranged in the first circuit and used for driving the refrigerant in the first circuit to flow; wherein, a plurality of heat exchange flow paths are arranged in at least one of the first heat exchanger and the second heat exchanger.

According to the utility model discloses the embodiment of the first aspect, heat transfer system includes first heat exchanger, second heat exchanger, energy storage device and pumping installations, can be used to the air conditioner. The first heat exchanger and the second heat exchanger are connected through a pipeline to form a first loop, and the refrigerant circularly flows in the first loop and exchanges heat through the first heat exchanger and the second heat exchanger respectively. The energy storage device is internally provided with an energy storage material so as to store energy by utilizing the energy storage material; the second heat exchanger is arranged in the energy storage device to exchange heat with the second heat exchanger through the energy storage material to release cold or heat to the refrigerant in the second heat exchanger. The first heat exchanger exchanges heat with the outside to adjust the outside temperature. Wherein, the energy storage material can be water or other refrigerating medium. The pumping device is arranged in the first circuit to drive the refrigerant in the first circuit to flow. Wherein, the pumping device can be one or more. At least one of the first heat exchanger and the second heat exchanger comprises a plurality of heat exchange flow paths, so that the refrigerant flows in the first heat exchanger and/or the second heat exchanger through the plurality of heat exchange flow paths, the length of a single heat exchange flow path is shortened, the resistance of the refrigerant in the heat exchange flow paths is reduced, and the on-way loss is reduced.

The heat exchange system in the scheme has the advantages that the heat exchange flow path of the heat exchanger is improved, the on-way loss of a refrigerant in the heat exchange flow path can be effectively reduced, the requirement on the lift of the pumping device is reduced under the condition of the same circulation quantity, the energy consumption can be reduced, and the operation energy efficiency of the air conditioner can be improved.

In addition, according to the utility model discloses heat transfer system among the above-mentioned technical scheme that the embodiment provided can also have following additional technical characteristics:

in the above technical solution, the first heat exchanger includes a plurality of first heat exchange flow paths; the second heat exchanger comprises a plurality of second heat exchange flow paths; the number of the second heat exchange flow paths is the same as that of the first heat exchange flow paths, and the second heat exchange flow paths and the first heat exchange flow paths are arranged at intervals and are sequentially connected end to end.

In this technical scheme, first heat exchanger includes a plurality of first heat transfer flow paths, and simultaneously, the second heat exchanger includes a plurality of second heat transfer flow paths to in the course of the work, make first heat exchanger and second heat exchanger all can reduce the on-the-way loss, be favorable to further reducing the energy consumption. Specifically, the number of the second heat exchange flow paths is the same as that of the first heat exchange flow paths, and the second heat exchange flow paths and the first heat exchange flow paths are arranged at intervals and are sequentially connected end to end, that is, an outlet of one first heat exchange flow path is connected with an inlet of one second heat exchange flow path, an outlet of the second heat exchange flow path is connected with an inlet of the next first heat exchange flow path, and so on, so that the refrigerant forms cross circulation flow in the second heat exchanger and the first heat exchanger to perform multiple heat exchange, wherein the number of the first heat exchange flow paths is the same as that of the second heat exchange flow paths, so that the refrigerant firstly flows into the second heat exchanger and finally flows out of the first heat exchanger to meet the requirements of the heat exchange system.

Compared with a single flow path, the length of the single first heat exchange flow path and the length of the single second heat exchange flow path in the scheme are shortened, the internal flow resistance is reduced, and the on-way loss of the refrigerant during flowing is reduced, so that the requirement on the lift of the pumping device is reduced, and the energy consumption is reduced. Meanwhile, the first loop in the scheme is integrally in a series connection mode, a branch flow path is not arranged, and flow monitoring and distribution are not needed; each first heat exchange flow path and each second heat exchange flow path are main flow paths, the flow is larger, the evaluation heat exchange temperature difference is increased, and the cold/heat taking capacity is enhanced. The medium flows through the second heat exchange flow path and then enters the first heat exchange flow path, and exchanges heat with the outside, so that the phenomenon that the temperature of the medium is too low or too high in the flow path can be prevented, heat exchange within a small temperature difference range can be realized, condensed water generated due to too low temperature of the medium can be reduced, heat radiation loss generated due to too high temperature of the medium can be reduced, and the heat exchange efficiency can be improved.

In the above technical solution, the number of the first heat exchange flow path and the number of the second heat exchange flow path are both two; the inlets of the two first heat exchange flow paths are close to the middle part of the first heat exchanger, and the outlets of the two first heat exchange flow paths are respectively close to the two ends of the first heat exchanger.

In the technical scheme, the number of the first heat exchange flow path and the second heat exchange flow path is two, so that the on-way loss of a refrigerant is reduced, the connection complexity is reduced as much as possible, and the pipe distribution is facilitated. The inlet through setting up two first heat transfer flow paths is close to the middle part of first heat exchanger, and the export of two first heat transfer flow paths is close to the both ends of first heat exchanger respectively to reduce the difference in temperature between the export of two first heat transfer flow paths, can make the air-out temperature of first heat exchanger more even, especially at the refrigeration in-process, the comfort of air-out is better. It should be noted that the second heat exchange flow path in the second heat exchanger may also be in the same or similar form as the first heat exchange flow path, so as to facilitate tube distribution.

In the above technical solution, the number of the pumping devices is plural, and the pumping devices are respectively arranged in each pipeline connected with the inlet of the second heat exchange flow path.

In the technical scheme, the number of the pumping devices is multiple, one pumping device is arranged in each pipeline connected with the inlet of the second heat exchange flow path to improve the overall pumping power, the multiple pumping devices work simultaneously to increase the pumping flow, the flow control range is larger, and the flow control is more accurate. Of course, when the required flow is small, only part of the pumping devices can be started to reduce energy consumption and save energy. In addition, when some pumping devices break down, other pumping devices can still drive the refrigerant to normally circulate and flow, and the reliability of the heat exchange system is improved.

In the above technical solution, the first heat exchanger includes a plurality of first heat exchange flow paths, inlets of the plurality of first heat exchange flow paths are commonly connected to a pipeline connected to an outlet of the second heat exchanger, and outlets of the plurality of first heat exchange flow paths are commonly connected to a pipeline connected to an inlet of the second heat exchanger; and/or the second heat exchanger comprises a plurality of second heat exchange flow paths, inlets of the plurality of second heat exchange flow paths are jointly connected into a pipeline connected with an outlet of the first heat exchanger, and outlets of the plurality of second heat exchange flow paths are jointly connected into a pipeline connected with an inlet of the first heat exchanger.

In this technical scheme, first heat exchanger includes a plurality of first heat transfer flow paths, insert to same pipeline through the entry that sets up a plurality of first heat transfer flow paths, and the export of connecting the second heat exchanger through this pipeline, simultaneously, the export that sets up a plurality of first heat transfer flow paths inserts to same pipeline, and the entry of connecting the second heat exchanger through this pipeline, make a plurality of first heat transfer flow paths in the first heat exchanger form parallelly connected, the refrigerant forms the reposition of redundant personnel at the entrance of first heat exchanger, flow in different first heat transfer flow paths respectively and carry out the heat transfer, compare in single flow path, the length of first heat transfer flow path reduces, the internal flow resistance reduces, along journey loss also reduces correspondingly.

Similarly, also can set up the second heat exchanger and include a plurality of second heat transfer flow paths, insert to same pipeline through the entry that sets up a plurality of second heat transfer flow paths, and the export of connecting first heat exchanger through this pipeline, simultaneously, set up the export of a plurality of second heat transfer flow paths and insert to same pipeline, and connect the entry of first heat exchanger through this pipeline, make a plurality of second heat transfer flow paths in the second heat exchanger form parallelly connected, the refrigerant forms the reposition of redundant personnel at the entrance of second heat exchanger, flow in different second heat transfer flow paths respectively and carry out the heat transfer, the effect is similar with first heat transfer flow path, no longer describe herein.

In the above technical scheme, the number of the first heat exchange flow paths is two, the inlets of the two first heat exchange flow paths are close to the middle part of the first heat exchanger, and the outlets of the two first heat exchange flow paths are respectively close to the two ends of the first heat exchanger.

In the technical scheme, the first heat exchanger comprises two first heat exchange flow paths so as to reduce the on-way loss in the flowing process of the refrigerant and make the connection too complicated. The inlet through setting up two first heat transfer flow paths is close to the middle part of first heat exchanger, and the export of two first heat transfer flow paths is close to the both ends of first heat exchanger respectively to reduce the difference in temperature between the export of two first heat transfer flow paths, can make the air-out temperature of first heat exchanger more even, especially at the refrigeration in-process, the comfort of air-out is better. It should be noted that the second heat exchange flow path in the second heat exchanger may also be in the same or similar form as the first heat exchange flow path, so as to facilitate tube distribution.

In the above technical solution, the heat exchange system further includes: the liquid collector is arranged in a pipeline connecting the outlet of the first heat exchanger and the inlet of the second heat exchanger and is used for carrying out gas-liquid separation on the refrigerant flowing out of the outlet of the first heat exchanger; and the heat exchange fan is arranged corresponding to the first heat exchanger.

In the technical scheme, the heat exchange system further comprises a liquid collector and a heat exchange fan. The liquid collector is arranged in the pipeline connecting the outlet of the first heat exchanger and the inlet of the second heat exchanger, so that gas-liquid separation is performed on the refrigerant flowing through the liquid collector, the gas content in the refrigerant is reduced, the heat exchange efficiency of the refrigerant is improved, and the operation stability of the pumping device can be improved. The heat exchange fan is arranged corresponding to the first heat exchanger to drive gas around the first heat exchanger to flow in an accelerating mode, heat exchange between the first heat exchanger and surrounding air can be promoted, and air supply is achieved.

In the above technical solution, the heat exchange system further includes: the compressor, the third heat exchanger, the throttling device and the fourth heat exchanger are sequentially connected through pipelines to form a second loop; the fourth heat exchanger is arranged in the energy storage device to exchange heat with the energy storage material; at least one of the third heat exchanger and the fourth heat exchanger is provided with a plurality of heat exchange flow paths.

In the technical scheme, the heat exchange system further comprises a compressor, a third heat exchanger, a throttling device and a fourth heat exchanger, and the compressor, the third heat exchanger, the throttling device and the fourth heat exchanger are sequentially connected through pipelines to form a second loop. Specifically, the compressor is used for supplying high-pressure gaseous refrigerant, and the throttling device is used for throttling the condensed refrigerant; the fourth heat exchanger is arranged in the energy storage device, so that the refrigerant in the second loop exchanges heat with the energy storage material through the fourth heat exchanger, the energy storage material realizes cold storage or heat storage, and the energy storage material can meet the heat exchange requirement of the second heat exchanger. The refrigerant in the second circuit may be the same as that in the first circuit, or may be another refrigerant of a different material from that in the first circuit. By arranging at least one of the third heat exchanger and the fourth heat exchanger to be provided with a plurality of heat exchange flow paths, when the refrigerant in the second loop flows through the third heat exchanger and/or the fourth heat exchanger, the on-way loss can be reduced through the plurality of heat exchange flow paths, so that the energy consumption of the heat exchange system is further reduced.

In the above technical solution, the heat exchange system further includes: and the four-way valve is arranged in the second loop, and four valve ports of the four-way valve are respectively connected with the exhaust port, the return air port, the third heat exchanger and the fourth heat exchanger of the compressor and used for changing the flow direction of the refrigerant in the second loop.

In the technical scheme, a four-way valve is further arranged in the second loop, and four valve ports of the four-way valve are respectively connected with an exhaust port, an air return port, a third heat exchanger and a fourth heat exchanger of the compressor, so that the flow direction of a refrigerant in the second loop is changed by reversing the four-way valve, and the second loop works in different modes.

In an embodiment of the second aspect, the present invention provides an air conditioner, including: a housing; the heat exchange system of any of the embodiments of the first aspect, as described above, is disposed within the housing.

In this embodiment, the air conditioner includes a housing and the heat exchange system of any of the embodiments of the first aspect described above. The heat exchange system is disposed within the shell to carry the various components of the heat exchange system through the shell. Wherein, be provided with the wind passageway that crosses that is used for the ventilation on the casing to carry out the heat transfer with the external world, in order to realize the regulation to ambient temperature.

In addition, the air conditioner in this scheme still has the whole beneficial effect of the heat exchange system of any one of the above-mentioned first aspect embodiments, and no longer repeated here.

Additional aspects and advantages of the embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of embodiments of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows a schematic view of a heat exchange system according to an embodiment of the present invention;

fig. 2 shows a schematic view of a heat exchange system according to an embodiment of the present invention;

fig. 3 shows a schematic view of a heat exchange system according to an embodiment of the present invention;

fig. 4 shows a schematic view of a heat exchange system according to an embodiment of the present invention;

fig. 5 shows a schematic view of a heat exchange system according to an embodiment of the present invention;

fig. 6 shows a schematic view of a heat exchange system according to an embodiment of the present invention;

fig. 7 shows a schematic view of a heat exchange system according to an embodiment of the present invention;

fig. 8 shows a schematic view of a heat exchange system according to an embodiment of the present invention;

fig. 9 shows an internal schematic view of an air conditioner according to an embodiment of the present invention.

Arrows in the piping lines in fig. 1 to 6 indicate the flow direction of the refrigerant.

Wherein, the correspondence between the reference numbers and the names of the components in fig. 1 to 9 is as follows:

1 heat exchange system, 11 first loop, 111 first heat exchanger, 1111 first heat exchange flow path, 1112 first refrigerant inlet, 1113 first refrigerant outlet, 112 second heat exchanger, 1121 second heat exchange flow path, 113 energy storage device, 1131 box, 1132 energy storage material, 1133 box refrigerant inlet, 1134 box refrigerant outlet, 115 pumping device, 116 liquid collector, 117 first heat exchange fan, 12 second loop, 121 compressor, 1211 gas outlet, 1212 gas return port, 122 third heat exchanger, 123 throttling device, 124 fourth heat exchanger, 125 four-way valve, 126 second heat exchange fan, 2 air conditioner.

Detailed Description

In order to make the above objects, features and advantages according to the embodiments of the present invention more clearly understood, embodiments according to the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of embodiments according to the invention, however, embodiments according to the invention may be practiced in other ways than those described herein, and therefore the scope of protection of this application is not limited by the specific embodiments disclosed below.

A heat exchange system and an air conditioner according to some embodiments of the present invention will be described below with reference to fig. 1 to 9.

Example one

The embodiment provides a heat exchange system 1 which can be used for an air conditioner. As shown in fig. 1, the heat exchange system 1 includes a first heat exchanger 111, a second heat exchanger 112, an energy storage device 113, and a pumping device 115.

An energy storage material 1132 is arranged in the energy storage device 113, so that the energy storage material 1132 is used for storing energy. The first heat exchanger 111 and the second heat exchanger 112 are connected through a pipeline to form a first loop 11, and a refrigerant circularly flows in the first loop 11 and exchanges heat through the first heat exchanger 111 and the second heat exchanger 112 respectively. The second heat exchanger 112 is disposed in the energy storage device 113, and can exchange heat with the energy storage material 1132, and the energy storage material 1132 is used to release cold or heat to the refrigerant in the second heat exchanger 112. When the refrigerant flows from the second heat exchanger 112 to the first heat exchanger 111, the refrigerant exchanges heat with the outside through the first heat exchanger 111, so as to adjust the temperature of the outside. A pumping device 115, such as a water pump or other device capable of pumping refrigerant, is disposed in the first circuit 11 to circulate the refrigerant in the first circuit 11. Among them, the pumping means 115 may be one or more. The coolant can be water or other coolant. The energy storage material 1132 may be water or a medium capable of realizing energy storage.

At least one of the first heat exchanger 111 and the second heat exchanger 112 is provided with a plurality of heat exchange flow paths, so that the refrigerant can flow into the plurality of heat exchange flow paths when flowing through the first heat exchanger 111 or the second heat exchanger 112, so as to shorten the length of a single heat exchange flow path, that is, the flowing distance of the refrigerant in the single heat exchange flow path is shortened, so that the resistance of the refrigerant in the heat exchange flow path is reduced, and the on-way loss is reduced.

In the heat exchange system 1 in this embodiment, by improving the heat exchange flow path of the heat exchanger, the on-way loss of the refrigerant in the heat exchange flow path can be effectively reduced, and the requirement on the lift of the pumping device 115 is reduced under the condition of the same circulation volume, so that the energy consumption of the heat exchange system 1 is reduced, and the operation energy efficiency of the air conditioner is improved.

Example two

The embodiment provides a heat exchange system 1 which can be used for an air conditioner. As shown in fig. 2, the heat exchange system 1 includes a first heat exchanger 111, a second heat exchanger 112, an energy storage device 113, and a pumping device 115.

The first heat exchanger 111 includes two first heat exchange flow paths 1111, while the second heat exchanger 112 includes two second heat exchange flow paths 1121. Specifically, the second heat exchange flow paths 1121 and the first heat exchange flow paths 1111 are disposed at intervals and connected end to end in sequence, for example, an outlet of one first heat exchange flow path 1111 is connected to an inlet of one second heat exchange flow path 1121, an outlet of the second heat exchange flow path 1121 is connected to an inlet of the next first heat exchange flow path 1111, and an outlet of the first heat exchange flow path 1111 is further connected to an inlet of the next second heat exchange flow path 1121, thereby forming a double-loop cross cycle. The refrigerant flows between the second heat exchanger 112 and the first heat exchanger 111 in a cross circulation manner to perform multiple heat exchanges in one working cycle, wherein the refrigerant firstly flows into the second heat exchanger 112 and finally flows out of the first heat exchanger 111, so as to meet the setting requirement of the heat exchange system 1. Compared with a single flow path, the lengths of the single first heat exchange flow path 1111 and the single second heat exchange flow path 1121 in the embodiment are both shortened, the internal flow resistance is reduced, and the on-way loss generated in the refrigerant flowing process is further reduced, so that the requirement on the lift of the pumping device 115 is correspondingly reduced, which is beneficial to further reducing the energy consumption.

Further, a liquid collector 116 is disposed in a pipeline connecting an outlet of the first heat exchanger 111 and an inlet of the second heat exchanger 112, so as to perform gas-liquid separation on the refrigerant flowing through the liquid collector 116, reduce the gas content in the refrigerant, facilitate the improvement of the heat exchange efficiency of the refrigerant, and improve the operation stability of the pumping device 115.

Further, a first heat exchange fan 117 is further provided at a position corresponding to the first heat exchanger 111 to drive the air around the first heat exchanger 111 to flow at an accelerated speed, so that heat exchange between the first heat exchanger 111 and the ambient air can be promoted, and air blowing can be achieved.

EXAMPLE III

The embodiment provides a heat exchange system 1, which is further improved on the basis of the second embodiment.

As shown in fig. 2, inlets of the two first heat exchange flow paths 1111 are disposed at positions close to the middle of the first heat exchanger 111, and correspondingly, outlets of the two first heat exchange flow paths 1111 are disposed at positions close to both ends of the first heat exchanger 111, respectively, so that a refrigerant flows in from the middle of the first heat exchanger 111, and flows out from both ends of the first heat exchanger 111 after heat exchange is completed, and thus, the outlet air temperature of the first heat exchanger 111 is relatively uniform, and the temperature difference between the outlets of the two first heat exchange flow paths 1111 is reduced. Particularly, in the refrigeration process, the air outlet comfort of the air conditioner can be effectively improved by the pipe distribution mode.

The second heat exchange flow path 1121 of the second heat exchanger 112 may be in the same or similar form as the first heat exchange flow path 1111, for example, in the form of inflow at both ends and outflow at the middle in fig. 2, so as to facilitate tube distribution. The number of the first heat exchange flow paths 1111 and the second heat exchange flow paths 1121 is not limited to two in this embodiment, and may be other numbers than two.

Example four

The embodiment provides a heat exchange system 1, which is further improved on the basis of the third embodiment.

As shown in fig. 3, one pumping device 115 is provided in each pipe connecting the inlets of the second heat exchange flow paths 1121, and the total pumping power is increased by overlapping two pumping devices 115. When the required flow is large, the two pumping devices 115 can be started to work simultaneously, and the pumping flow can be greatly increased; when the required flow is small, only one pumping device 115 can be started, so that the energy consumption can be reduced on the premise of meeting the flow requirement, and the energy saving is facilitated. Particularly, in the working process of the heat exchange system 1, if one pumping device 115 fails, the other pumping device 115 can still normally drive the refrigerant to circularly flow, and the heat exchange system does not need to be stopped and maintained immediately, which is beneficial to improving the reliability of the heat exchange system 1.

EXAMPLE five

The embodiment provides a heat exchange system 1, which is further improved on the basis of the first embodiment.

As shown in fig. 4, a plurality of heat exchange flow paths, specifically, two first heat exchange flow paths 1111 are provided in the first heat exchanger 111. Inlets of the two first heat exchange flow paths 1111 are connected into the same pipeline and connected with an outlet of the second heat exchanger 112 through the pipeline; the outlets of the two first heat exchange flow paths 1111 are connected to the same pipeline, and are connected to the inlet of the second heat exchanger 112 through the pipeline, so that the two first heat exchange flow paths 1111 form a parallel connection. When flowing to the inlet of the first heat exchanger 111, the refrigerant flowing out of the second heat exchanger 112 is split, flows into different first heat exchange flow paths 1111, and exchanges heat with the outside; the refrigerants having undergone heat exchange merge when flowing to the outlet of the first heat exchanger 111, and flow to the second heat exchanger 112. Compared with a single flow path, the length of the single first heat exchange flow path 1111 is reduced, so that the internal flow resistance is reduced, and the on-way loss generated when the refrigerant flows in the first heat exchange flow path 1111 is correspondingly reduced, thereby reducing the requirement on the lift of the pumping device 115 and being beneficial to reducing the energy consumption.

Furthermore, the inlets of the two first heat exchange flow paths 1111 are disposed at positions close to the middle of the first heat exchanger 111, and correspondingly, the outlets of the two first heat exchange flow paths 1111 are disposed at positions close to the two ends of the first heat exchanger 111, so that the refrigerant flows in from the middle of the first heat exchanger 111, and flows out from the two ends of the first heat exchanger 111 after heat exchange is completed, and the outlet air temperature of the first heat exchanger 111 can be relatively more uniform, thereby reducing the temperature difference between the outlets of the two first heat exchange flow paths 1111. Particularly, in the refrigeration process, the air outlet comfort of the air conditioner can be effectively improved by the pipe distribution mode. The second heat exchange flow path 1121 of the second heat exchanger 112 may have the same or similar form as the first heat exchange flow path 1111, so as to facilitate piping.

The number of the first heat exchange flow paths 1111 and the second heat exchange flow paths 1121 is not limited to two in this embodiment, and may be other numbers than two.

EXAMPLE six

As shown in fig. 5, a plurality of heat exchange flow paths, specifically, two second heat exchange flow paths 1121 are provided in the second heat exchanger 112. Inlets of the two second heat exchange flow paths 1121 are connected to the same pipeline, and are connected to an outlet of the first heat exchanger 111 through the pipeline; outlets of the two second heat exchange flow paths 1121 are connected to the same pipeline, and are connected to an inlet of the first heat exchanger 111 through the pipeline, so that the two second heat exchange flow paths 1121 form a parallel connection form. When the refrigerant flows to the inlet of the second heat exchanger 112, a split flow is formed, and the refrigerant flows into different second heat exchange flow paths 1121 respectively, and exchanges heat with the energy storage material 1132 in the energy storage device 113 respectively; the refrigerants having undergone heat exchange merge when flowing to the outlet of the second heat exchanger 112, and flow to the first heat exchanger 111. Compared with a single flow path, the length of the single second heat exchange flow path 1121 is reduced, so that the internal flow resistance is reduced, and the on-way loss generated when the refrigerant flows in the second heat exchange flow path 1121 is correspondingly reduced, thereby reducing the requirement on the lift of the pumping device 115 and being beneficial to reducing the energy consumption.

Further, as shown in fig. 6, two first heat exchange flow paths 1111 are also provided in the first heat exchanger 111. Inlets of the two first heat exchange flow paths 1111 are connected into the same pipeline and connected with an outlet of the second heat exchanger 112 through the pipeline; the outlets of the two first heat exchange flow paths 1111 are connected to the same pipeline, and are connected to the inlet of the second heat exchanger 112 through the pipeline, so that the two first heat exchange flow paths 1111 form a parallel connection. Inlets of the two first heat exchange flow paths 1111 are disposed at positions close to the middle of the first heat exchanger 111, and correspondingly, outlets of the two first heat exchange flow paths 1111 are disposed at positions close to both ends of the first heat exchanger 111.

EXAMPLE seven

As shown in fig. 7 and 8, the heat exchange system 1 further includes a compressor 121, a third heat exchanger 122, a throttling device 123 and a fourth heat exchanger 124, and the compressor 121, the third heat exchanger 122, the throttling device 123 and the fourth heat exchanger 124 are sequentially connected through a pipeline to form the second loop 12. Specifically, the compressor 121 is used to supply a high-pressure gaseous refrigerant; the compressor 121 is provided with a four-way valve 125, four ports of the four-way valve 125 are respectively connected to the exhaust 1211, the return air port 1212, the third heat exchanger 122 and the fourth heat exchanger 124 of the compressor 121, and the four-way valve 125 can change the flow direction of the refrigerant in the second circuit 12 by reversing the direction, so that the second circuit 12 operates in different modes. The throttling device 123 is used for throttling the condensed refrigerant. The fourth heat exchanger 124 is disposed in the energy storage device 113, and when the refrigerant in the second loop 12 flows through the fourth heat exchanger 124, the refrigerant can exchange heat with the energy storage material 1132, so that the energy storage material 1132 can store cold or heat, and the energy storage material 1132 can meet the heat exchange requirement of the second heat exchanger 112. The third heat exchanger 122 is further provided with a second heat exchange fan 126 to promote air flow around the third heat exchanger 122 and promote heat exchange. The refrigerant in the second circuit 12 may be the same medium as that in the first circuit 11 or may be a different medium from that in the first circuit 11.

Further, at least one of the third heat exchanger 122 and the fourth heat exchanger 124 is provided with a plurality of heat exchange flow paths, and the third heat exchanger 122 and the fourth heat exchanger 124 are formed in a similar manner as the first heat exchanger 111 and the second heat exchanger 112 in any of the above embodiments, so that when the refrigerant in the second loop 12 flows through the third heat exchanger 122 or the fourth heat exchanger 124, the on-way loss can be reduced through the plurality of heat exchange flow paths, so as to further reduce the energy consumption of the heat exchange system 1.

Example eight

In the present embodiment, an air conditioner 2 is provided, as shown in fig. 7 to 9, the air conditioner 2 includes a casing (not shown in the figure) and the heat exchange system 1 in any of the above embodiments. The heat exchange system 1 is provided in the housing to carry the various components of the heat exchange system 1 through the housing. Wherein, be provided with the wind passageway that crosses that is used for the ventilation on the casing to carry out the heat transfer with the external world, in order to realize the regulation to ambient temperature.

In addition, the air conditioner 2 in this embodiment also has all the beneficial effects of the heat exchange system 1 in any of the above embodiments, which are not described herein again.

In a particular embodiment, an air conditioner 2 is provided, the air conditioner 2 being in particular a storage type mobile air conditioner.

The air conditioner 2 includes a housing, a first heat exchanger 111, a second heat exchanger 112, an energy storage device 113, a pumping device 115, an accumulator 116, a compressor 121, a third heat exchanger 122, a throttling device 123, a fourth heat exchanger 124, a first heat exchange fan 117, a second heat exchange fan 126, and corresponding piping.

As shown in fig. 9, a heat exchange system 1 is formed in the air conditioner 2, and the heat exchange system 1 specifically includes a first loop 11 and a second loop 12. The energy storage device 113 includes a casing 1131, and an energy storage material 1132, such as water, is disposed in the casing 1131, so as to store energy by using the energy storage material 1132. The second heat exchanger 112 and the fourth heat exchanger 124 are arranged in the energy storage device 113; the first heat exchanger 111 and the first heat exchange fan 117 are provided above the energy storage device 113, and the third heat exchanger 122 and the second heat exchange fan 126 are provided on the side of the energy storage device 113. The water pump is arranged at the top of the energy storage device 113, and the liquid collector 116 is arranged at the bottom of the first heat exchanger 111; the compressor 121 is provided on the side of the energy storage device 113 and below the third heat exchanger 122.

The first heat exchanger 111, the liquid collector 116, the water pump and the second heat exchanger 112 are sequentially connected through a pipeline, that is, the first refrigerant inlet 1112 of the first heat exchanger 111 is connected to the liquid collector 116 through a pipeline, the liquid collector 116 is connected to the water pump through a pipeline, the output end of the water pump is connected to the tank refrigerant inlet 1133 of the energy storage device 113 through a pipeline and is connected to the inlet of the second heat exchanger 112, the outlet of the second heat exchanger 112 is connected to the tank refrigerant outlet 1134 of the energy storage device 113 through a pipeline and is connected to the first refrigerant outlet 1113 of the first heat exchanger 111, so as to form a first loop 11 (in a state shown in fig. 3); the first heat exchange fan 117 is disposed corresponding to the first heat exchanger 111. The compressor 121, the third heat exchanger 122, the throttling device 123 and the fourth heat exchanger 124 are connected in sequence through a pipeline to form a second loop 12 (as shown in the state of fig. 7 or fig. 8); the second heat exchange fan 126 is disposed corresponding to the third heat exchanger 122. Wherein, the compressor 121 is provided with a four-way valve 125, and four valve ports of the four-way valve 125 are respectively connected with the exhaust 1211, the return air port 1212, the third heat exchanger 122 and the fourth heat exchanger 124 of the compressor 121; the four-way valve 125 can change the flow direction of the refrigerant in the second circuit 12 by reversing the direction of the refrigerant, so that the air conditioner 2 operates in different modes.

Further, each of the first heat exchanger 111 and the second heat exchanger 112 is provided with a plurality of heat exchange flow paths, wherein the first heat exchanger 111 includes two first heat exchange flow paths 1111, and the second heat exchanger 112 includes two second heat exchange flow paths 1121, for example, in a state shown in fig. 3. Specifically, the second heat exchange flow paths 1121 and the first heat exchange flow paths 1111 are arranged at intervals and are connected end to end in sequence, an outlet of one first heat exchange flow path 1111 is connected to an inlet of one second heat exchange flow path 1121, an outlet of the second heat exchange flow path 1121 is connected to an inlet of the next first heat exchange flow path 1111, and an outlet of the first heat exchange flow path 1111 is further connected to an inlet of the next second heat exchange flow path 1121, so that a double-loop cross circulation is formed. The refrigerant flows between the second heat exchanger 112 and the first heat exchanger 111 in a cross circulation manner to perform multiple heat exchanges in one working cycle, wherein the refrigerant firstly flows into the second heat exchanger 112 and finally flows out of the first heat exchanger 111, so as to meet the setting requirement of the heat exchange system 1. The on-way loss generated in the refrigerant flowing process is reduced through the plurality of heat exchange flow paths, so that the requirement of the heat exchange system 1 on the lift of the pumping device 115 is reduced, the energy consumption is reduced, and the operation energy efficiency of the air conditioner 2 is improved.

Further, as shown in fig. 3, inlets of the two first heat exchange flow paths 1111 are disposed at positions close to the middle of the first heat exchanger 111, and correspondingly, outlets of the two first heat exchange flow paths 1111 are disposed at positions close to two ends of the first heat exchanger 111, so that the refrigerant flows in from the middle of the first heat exchanger 111, and flows out from two ends of the first heat exchanger 111 after heat exchange is completed, and the outlet air temperature of the first heat exchanger 111 is relatively uniform, so as to reduce the temperature difference between the outlets of the two first heat exchange flow paths 1111.

Further, at least one of the third heat exchanger 122 and the fourth heat exchanger 124 is provided with a plurality of heat exchange flow paths, and the third heat exchanger 122 and the fourth heat exchanger 124 are formed in a similar manner as the first heat exchanger 111 and the second heat exchanger 112, so that when the refrigerant in the second loop 12 flows through the third heat exchanger 122 or the fourth heat exchanger 124, the on-way loss can be reduced through the plurality of heat exchange flow paths, so as to further reduce the energy consumption of the heat exchange system 1.

Further, the refrigerant can be water or other secondary refrigerant; the refrigerant in the first circuit 11 and the refrigerant in the second circuit 12 may be the same medium or different media.

In the cold storage mode, as shown in fig. 7, the refrigerant in the second loop 12 is compressed by the compressor 121 and then flows out of the exhaust 1211 of the compressor 121, enters the third heat exchanger 122, and exchanges heat with the outside in the third heat exchanger 122 to realize condensation; the condensed refrigerant is subjected to throttling treatment by the throttling device 123 and flows into the fourth heat exchanger 124 in the energy storage device 113, the refrigerant exchanges heat with the energy storage material 1132 in the fourth heat exchanger 124 and evaporates, and meanwhile, the heat in the energy storage material 1132 is absorbed, so that the energy storage material 1132 realizes cold storage; after the evaporated refrigerant flows out of the fourth heat exchanger 124, the refrigerant flows back to the compressor 121 through the air return port 1212 of the compressor 121, and the cold storage cycle is completed.

When the cooling mode is operated, the refrigerant in the first loop 11 flows into the second heat exchanger 112 in the energy storage device 113, exchanges heat with the energy storage material 1132 in the second heat exchanger 112, condenses, and releases heat to the energy storage material 1132; the refrigerant which finishes heat release flows into the first heat exchanger 111, exchanges heat with the outside in the first heat exchanger 111, absorbs the heat of the outside, and realizes the outward cooling, and at the moment, the first heat exchange fan 117 accelerates the airflow flowing around the first heat exchanger 111 to promote the cooling; after the gas-liquid separation of the liquid collector 116, the refrigerant that has completed the heat absorption flows back to the second heat exchanger 112 in the energy storage device 113 again, and the cooling cycle is completed.

In the heat storage mode, as shown in fig. 8, after the refrigerant in the second circuit 12 is compressed by the compressor 121, the refrigerant is discharged from the exhaust port 1211 of the compressor 121 and flows into the fourth heat exchanger 124 in the energy storage device 113, and the refrigerant releases heat to the energy storage material 1132 in the fourth heat exchanger 124, so that the energy storage material 1132 absorbs heat, heat storage is realized, and meanwhile, the refrigerant is condensed; the refrigerant after heat release flows out of the fourth heat exchanger 124, is throttled by the throttling device 123 and then flows into the third heat exchanger 122, exchanges heat with the outside in the third heat exchanger 122 to realize evaporation and heat absorption, so that the outside temperature is reduced, and at the moment, the second heat exchange fan 126 promotes airflow around the third heat exchanger 122 to flow, so that heat exchange is promoted; and finally flows back to the compressor 121 through the air return port 1212 of the compressor 121 to complete the heat accumulation cycle.

In the heating mode, the refrigerant in the first loop 11 flows into the second heat exchanger 112 in the energy storage device 113, and the refrigerant exchanges heat with the energy storage material 1132 in the second heat exchanger 112 to realize evaporation and heat absorption; the refrigerant after absorbing heat flows into the first heat exchanger 111 and exchanges heat with the outside, and the refrigerant is condensed to release heat, so that heat is supplied to the outside; and the second heat exchanger 112 in the refrigerant re-flowing path energy storage device 113 for completing heat supply completes the heat supply cycle.

The refrigerant circulation method of the heat exchange system 1 in the present embodiment is not limited to the method shown in fig. 3, and may be any one of the refrigerant circulation methods shown in fig. 1, 2, 4, 5, and 6.

In one embodiment, the energy storage type mobile air conditioner is provided, wherein a liquid collector is arranged in the cooling loop and is positioned at the uppermost part of the whole cooling loop, so that when the cooling loop stops standing, bubbles in the cooling loop can rise along the cooling loop pipeline due to gas-liquid density difference, and are concentrated in the liquid collector. The liquid collector is provided with an inlet, an outlet and a filling port. The filling port can conveniently fill the cooling liquid into the cooling loop; the filling port is sealed by a rubber cover, and the top of the rubber cover can deform to offset part of pressure fluctuation in the cold taking loop caused by the start and stop operation of the cold taking loop water pump. The inlet and the outlet of the liquid collector are tangent to the wall surface of the liquid collector, and a vortex is formed in the liquid collector in the circulation process of the cold liquid, so that the effect similar to that of a vortex separator is achieved, bubbles contained in the cold liquid can be separated, the gas content in the cold liquid is reduced, the heat conductivity of the cold liquid is improved, and the heat exchange capacity of the cold liquid is enhanced.

The water pump in the cold taking loop is positioned above the water tank and below the liquid collector, cold taking liquid in the liquid collector is pumped into the cold storage water tank through the water pump to exchange heat with the cold accumulation medium, the cold taking medium with lower temperature directly enters the cold supply heat exchanger to exchange heat with the external environment after coming out of the cold storage water tank, and the cold taking medium with higher temperature flows into the liquid collector after absorbing heat. The cold-taking liquid can not pass through the water pump after entering the cold storage tank for cold taking, so that the low-temperature fluid is prevented from passing through the water pump to cause surface condensation of the water pump.

The circulation mode of the secondary refrigerant is double-pump double-loop cross circulation, the reliability is high, and the circulation can still run after one water pump fails; the two water pumps in the cycle have large on-way superposed flow; when the required flow is small, one water pump can be controlled to be opened, and when the required flow is large, two water pumps are simultaneously opened.

Above combine the figure in detail to describe according to the utility model discloses a technical scheme of some embodiments, through the heat transfer flow path who improves the heat exchanger, can effectively reduce the on-the-way loss of refrigerant in the heat transfer flow path, under the condition of same circulation volume, the lift requirement to pumping device reduces to heat transfer system's energy consumption has been reduced, is favorable to improving the operation efficiency of air conditioner.

In embodiments in accordance with the present invention, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the embodiments according to the present invention can be understood by those of ordinary skill in the art as the case may be.

In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", 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 unit referred to must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the technical aspects of the present application.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example in accordance with the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment according to the present invention, and is not intended to limit the technical solution of the present invention, and it is obvious to those skilled in the art that various modifications and changes can be made in the technical solution of the present invention. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the technical scheme of the application shall be included in the protection scope of the application.

Claims

1. A heat exchange system, comprising:

a first heat exchanger;

the second heat exchanger is arranged in the energy storage device and is connected with the first heat exchanger through a pipeline to form a first loop;

the energy storage device is internally provided with an energy storage material and is used for exchanging heat with the second heat exchanger;

the pumping device is arranged in the first circuit and used for driving the refrigerant in the first circuit to flow;

wherein at least one of the first heat exchanger and the second heat exchanger is provided with a plurality of heat exchange flow paths.

2. The heat exchange system of claim 1,

the first heat exchanger comprises a plurality of first heat exchange flow paths;

the second heat exchanger comprises a plurality of second heat exchange flow paths;

the number of the second heat exchange flow paths is the same as that of the first heat exchange flow paths, and the second heat exchange flow paths and the first heat exchange flow paths are arranged at intervals and are sequentially connected end to end.

3. The heat exchange system of claim 2,

the number of the first heat exchange flow path and the second heat exchange flow path is two;

inlets of the two first heat exchange flow paths are close to the middle of the first heat exchanger, and outlets of the two first heat exchange flow paths are respectively close to two ends of the first heat exchanger.

4. The heat exchange system of claim 2,

the number of the pumping devices is multiple, and the pumping devices are respectively arranged in each pipeline connected with the inlet of the second heat exchange flow path.

5. The heat exchange system of claim 1,

the first heat exchanger comprises a plurality of first heat exchange flow paths, inlets of the first heat exchange flow paths are commonly connected into a pipeline connected with an outlet of the second heat exchanger, and outlets of the first heat exchange flow paths are commonly connected into a pipeline connected with an inlet of the second heat exchanger; and/or

The second heat exchanger comprises a plurality of second heat exchange flow paths, inlets of the second heat exchange flow paths are commonly connected into a pipeline connected with an outlet of the first heat exchanger, and outlets of the second heat exchange flow paths are commonly connected into a pipeline connected with an inlet of the first heat exchanger.

6. The heat exchange system of claim 5,

the number of the first heat exchange flow paths is two, inlets of the two first heat exchange flow paths are close to the middle of the first heat exchanger, and outlets of the two first heat exchange flow paths are respectively close to two ends of the first heat exchanger.

7. The heat exchange system of any one of claims 1 to 6, further comprising:

the liquid collector is arranged in a pipeline connecting the outlet of the first heat exchanger and the inlet of the second heat exchanger and is used for carrying out gas-liquid separation on the refrigerant flowing out of the outlet of the first heat exchanger;

and the heat exchange fan is arranged corresponding to the first heat exchanger.

8. The heat exchange system of claim 7, further comprising:

the system comprises a compressor, a third heat exchanger, a throttling device and a fourth heat exchanger, wherein the compressor, the third heat exchanger, the throttling device and the fourth heat exchanger are sequentially connected through pipelines to form a second loop;

the fourth heat exchanger is arranged in the energy storage device to exchange heat with the energy storage material; at least one of the third heat exchanger and the fourth heat exchanger is provided with a plurality of heat exchange flow paths.

9. The heat exchange system of claim 8, further comprising:

and the four valve ports of the four-way valve are respectively connected with the exhaust port, the return air port, the third heat exchanger and the fourth heat exchanger of the compressor and are used for changing the flow direction of the refrigerant in the second loop.

10. An air conditioner, comprising:

a housing;

a heat exchange system according to any one of claims 1 to 9 disposed within the housing.