WO2020140211A1

WO2020140211A1 - Heat exchanger, heat exchange assembly, and air conditioning equipment

Info

Publication number: WO2020140211A1
Application number: PCT/CN2019/070141
Authority: WO
Inventors: 刘和成; 岳宝; 林晨; 大森宏
Original assignee: 广东美的白色家电技术创新中心有限公司; 美的集团股份有限公司
Priority date: 2019-01-02
Filing date: 2019-01-02
Publication date: 2020-07-09
Also published as: CN111642132A

Abstract

A heat exchanger, a heat exchange device, and an air conditioning equipment. The heat exchanger (100) comprises: at least one single row heat exchanger unit (110). A channel (111) for a refrigerant to pass through is formed in the single row heat exchanger unit (110). The single row heat exchanger unit (110) inclines with respect to a horizontal plane, and thus makes the position of the channel (111) descend along the flow direction of the refrigerant. The single row heat exchanger unit (110) implements the autonomous discharge of the refrigerant by means of the gravity of the refrigerant, thereby improving the refrigerant cycle efficiency and making refrigerating running of air conditioning equipment more stable.

Description

Heat exchangers, heat exchange components and air conditioning equipment

Technical field

This application relates to the field of heat exchangers, and in particular, to a heat exchanger, a heat exchange assembly, and an air-conditioning device.

Background technique

Building air conditioners are large energy consumers in various industries. Reducing electricity consumption peaks is of great significance to alleviate the contradiction between energy supply and demand. Cool storage air conditioning technology can achieve peak clipping and valley filling, and has been applied as a research hotspot in the industry.

In the cold storage air-conditioning technology, the existing technology proposes a refrigeration system without external drive. Its principle is: when there is a certain temperature difference between the cold storage medium and the environment, the gas/liquid refrigerant density difference can be fully utilized to achieve natural siphon drive The specific process of the refrigerant is: in the evaporator, the liquid refrigerant evaporates and absorbs the heat in the environment to provide cooling capacity. In the condenser, the evaporated gas refrigerant is cooled into a liquid by the cold storage medium, and the liquid flows down by gravity and enters the evaporation again. In the device.

The effect of this powerless cooling method has high requirements on the design of the heat exchanger. A better design scheme can make the cooling effect more obvious. The generated cooling capacity meets the needs of users, but on the contrary, it cannot meet the requirements.

Summary of the invention

In order to solve at least one of the above technical problems, an object of the present application is to provide a heat exchanger.

Another object of the present application is to provide a heat exchange assembly having the above heat exchanger.

Still another object of the present application is to provide an air conditioner having the above heat exchange assembly.

To achieve the above object, an embodiment of the first aspect of the present application provides a heat exchanger, including: at least one single-row heat exchanger unit, the single-row heat exchanger unit is formed with a channel for refrigerant circulation, the The single-row heat exchanger unit is inclined with respect to the horizontal plane and causes the channel to decrease in position along the flow direction.

It is worth noting that the single-row heat exchanger unit is inclined with respect to the horizontal plane. It can be understood that the angle between the single-row heat exchanger unit and the horizontal plane is greater than 0° and less than 90°.

The heat exchanger provided by the above embodiment of the present application uses gravity potential energy in the heat exchanger to drive the refrigerant. On the one hand, while improving the discharge efficiency of the liquid refrigerant, no functional consumption is introduced, which makes the energy consumption of the air conditioning equipment lower On the other hand, since gravity potential energy can cause the refrigerant to drain out by gravity sinking, this structure uses the single-row design of the single-row heat exchanger unit to improve the condensation efficiency, while the heat exchanger will not The liquid refrigerant is clogged, which reduces the pressure inside the heat exchanger, improves the siphon effect of the refrigerant circuit in the air-conditioning equipment, and thus improves the efficiency and smoothness of the refrigerant circulation of the entire air-conditioning equipment, making the air-conditioning equipment cooling more stable. The performance matching of the heat exchanger in the air-conditioning equipment is improved, so that while improving the cooling efficiency, the cooling operation of the air-conditioning equipment is more stable, the air temperature is more uniform, and the experience is better.

In addition, the heat exchanger in the above embodiments provided by this application may also have the following additional technical features:

In the above technical solution, the single-row heat exchanger unit includes a single row of heat exchange tubes distributed, and the heat exchange tubes form the channel.

In this solution, a single-row heat exchanger unit is provided as a tube heat exchanger containing a single row of heat exchange tubes, and the heat exchange tubes of the tube heat exchanger are formed as channels for the circulation of refrigerant, Not only does it have high heat exchange efficiency, but also has a simple structure, low processing cost, and is not prone to problems such as blocking and leakage. Maintenance costs are reduced, thereby improving the cost performance of the product.

In the above technical solution, the heat exchanger further includes: fins nested outside the heat exchange tubes.

In this solution, the fins are arranged on the outside of the heat exchange tube, and the fins can be used to increase the heat exchange area between the heat exchanger and the cold storage working medium, improve the heat exchange efficiency of the refrigerant, and at the same time, through the fins Inserted into the cold storage working medium, it can also make the heat storage medium use fins to conduct heat, make up for the internal heat storage defects of the cold storage working medium, and realize the promotion of heat equalization between the areas within the cold storage working medium, so that the cold storage working medium and the heat exchange The effective temperature difference can be maintained between the devices to ensure the efficiency of heat exchange.

In the above technical solution, the fins include single-row fins, and the single-row fins are configured for one single-row heat exchanger unit to be sleeve-connected therewith.

In this scheme, the single-row fins are installed to be assembled with the corresponding single-row heat exchanger unit, so that the overall shape of the heat exchanger and the heat exchange area and other parameters can be flexibly adjusted, which is conducive to product quality The verification of heat exchange improves the accuracy of heat exchange. At the same time, it is also conducive to the adaptive application of heat exchangers in different types of air-conditioning equipment, and the promotion of products in the field.

In the above technical solution, the fins include integral fins, and the integral fins are configured to allow at least two of the single-row heat exchanger units to be sleeve-connected therewith.

In this solution, integral fins are installed to be assembled with at least two single-row heat exchanger units, which not only can further increase the total heat exchange area of the heat exchanger, but also can further strengthen the internal and multiple The heat uniformity between the single-row heat exchanger units comprehensively improves the heat exchange efficiency between the cold storage working medium and the heat exchanger, and improves the condensation efficiency of the refrigerant.

In any of the above technical solutions, the fins and the heat exchange tubes are adapted to be inserted and fixed to each other.

In this solution, the fins and the heat exchange tubes are inserted and fixed to each other, so that the assembly efficiency between the fins and the heat exchange tubes is higher, and at the same time, the process is also simplified and the product cost is reduced.

In any one of the above technical solutions, the heat exchange tube and the fin are formed in an expanded tube joint at a relative position.

In this solution, the heat exchange tube and the fin are formed at the relative position to form an expanded tube joint. In this way, the connection between the heat exchanger tube and the fin is better, the heat conduction efficiency is higher, and the refrigerant and the cold storage working medium can be improved Heat exchange efficiency.

In any of the above technical solutions, the heat exchange tube is configured with a U-tube portion, the fin is provided with an oblong hole, and the U-tube portion passes through the oblong hole.

In this solution, the insertion and fitting of the U-tube part and the oblong hole formed between the heat exchange tube and the fins is provided. In this way, the tube-passing process of the heat exchanger is reduced, the generation efficiency is higher, and the product cost is reduced.

In any of the above technical solutions, the fin is provided with a tube hole suitable for the cross-sectional shape of the heat exchange tube, and the heat exchange tube passes through the tube hole.

In this solution, the heat exchange tubes are arranged to fit into the tube holes matching the cross-sectional shape. For example, for a round heat exchange tube, the corresponding design of the tube hole is a round hole suitable for the heat exchange tube, or, For the elliptical heat exchange tube, the corresponding design of the tube hole is an ellipse hole suitable for the heat exchange tube, etc., so that the heat exchange tube and the fin are combined with a larger area, the heat transfer efficiency is higher, and the refrigerant and cold storage working medium can be improved Heat exchange efficiency.

In any of the above technical solutions, the channel includes a serpentine channel.

In this solution, the installation channel includes a serpentine channel, which can increase the heat exchange area of the heat exchanger by expanding the refrigerant circulation path, and the design of the serpentine channel can also cause the refrigerant to form a baffle, which is conducive to promoting the refrigerant from the gas phase to the Liquid phase conversion improves the efficiency of condensation, while ensuring that no gas-phase refrigerant is discharged, and improves the refrigeration efficiency and the uniformity of the outlet temperature.

In the above technical solution, the serpentine channel includes straight channels and curved channels, and the number of the straight channels is multiple, and the multiple straight channels are arranged side by side in an oblique downward direction, wherein adjacent straight channels are connected Describe the curve.

In this scheme, a plurality of straight channels are arranged side by side in an oblique downward direction. In this way, the positions of the straight channels are decreasing, and the driving effect of gravity potential energy on the refrigerant is realized, and the curved channels have a connecting effect, while making the straight channels A turn is formed between them, which causes the refrigerant to deflect accordingly, which is conducive to promoting the transformation of the refrigerant from the gas phase to the liquid phase, improving the condensation efficiency, and at the same time ensuring that no gas phase refrigerant is discharged, improving the refrigeration efficiency and the uniformity of the outlet temperature.

In the above technical solution, the straight lines are parallel.

In this solution, the parallel between the straight channels is set, which can improve the space utilization rate of the serpentine channel, which is conducive to the reduction of the overall size of the product and realize the miniaturized design of the product.

In the above technical solution, the straights are arranged horizontally.

In this scheme, a straight line is arranged horizontally. In this way, by arranging a plurality of horizontal straight lines side by side in an oblique downward direction, the serpentine channel can form a trend of stepwise decrease along the flow direction to achieve gravity potential energy While driving the purpose, it maximizes the space utilization rate of the serpentine channel, which is conducive to the reduction of the overall size of the product and realizes the miniaturized design of the product.

In any of the above technical solutions, the inclination angle of the single-row heat exchanger unit relative to the horizontal plane is 5° to 30°.

In this solution, the inclination angle of the single-row heat exchanger unit with respect to the horizontal plane is designed to be 5° to 30°, while achieving the driving effect of gravity potential energy on the refrigerant, so that the refrigerant has sufficient residence time in the heat exchanger, In order to ensure that the condensation efficiency of the refrigerant is kept high, it can also help save the height of the product, reduce the overall size of the product, and realize the miniaturized design of the product. In addition, in terms of the cold storage working medium, this angle limit can also make the cold storage work The temperature difference between the upper and lower areas inside the mass is small, which suppresses the temperature stratification inside the cold storage working medium, to a certain extent, promotes the uniform temperature inside the cold storage working medium, and ensures the high efficiency of heat exchange between the cold storage working medium and the heat exchanger.

In any of the above technical solutions, the heat exchanger has multiple single-row heat exchanger units, the multiple single-row heat exchanger units are arranged along the direction of gravity, and the multiple single-row heat exchangers The sensor units are connected in sequence along the direction of gravity.

In this solution, multiple single-row heat exchanger units are arranged along the direction of gravity and connected in sequence along the direction of gravity. While increasing the heat exchange area of the heat exchanger, in terms of refrigerant fluidity, gravity potential energy can be used to achieve The driving refrigerant flows between multiple single-row heat exchanger units, so that no refrigerant is retained in each single-row heat exchanger unit, which makes the cooling efficiency of the air-conditioning equipment higher and the siphon effect better. In terms of product volume, The arrangement of multiple single-row heat exchanger units along the direction of gravity is more conducive to the reduction of the overall size of the product and realizes the miniaturized design of the product.

In the above technical solution, the channel is formed with a starting end and an end along the flow direction; adjacent to the single row heat exchanger unit, the starting end of the channel of the lower row heat exchanger unit communicates with the upper side The end of the channel of the single-row heat exchanger unit.

In this solution, the channels of the upper and lower single-row heat exchanger units are connected end to end, which can ensure that the refrigerant in each channel of multiple single-row heat exchanger units can be exhausted by gravity potential energy. Remaining refrigerant, blocking problems, improve refrigeration efficiency.

In the above technical solution, among the plurality of single-row heat exchanger units, the top end of the single-row heat exchanger unit is formed with a refrigerant inlet through which refrigerant enters the heat exchanger.

In this solution, the refrigerant inlet of the heat exchanger is set at the top position of the single-row heat exchanger unit at the top, so that the position of the refrigerant inlet is as high as possible, the driving effect of gravity potential energy is improved, and the The gas-phase refrigerant of the heater basically flows down the channel without upward diverting. The siphon effect in the refrigerant circuit of the entire air-conditioning equipment is more stable, which makes the cooling operation of the air-conditioning equipment more stable, the air temperature is more uniform, and the use experience is more it is good.

In the above technical solution, among the plurality of single-row heat exchanger units, the bottom end of the single-row heat exchanger unit is formed with a refrigerant outlet for discharging refrigerant out of the heat exchanger.

In this solution, the refrigerant outlet of the heat exchanger is set at the bottom position of the single-row heat exchanger unit at the bottom end, so that the position of the refrigerant inlet is as low as possible, and the driving effect of gravity potential energy is improved. It is helpful for the refrigerant to be discharged from the heat exchanger to avoid the problem of residual refrigerant and improve the refrigeration efficiency.

In the above technical solution, adjacent single row heat exchanger units are connected by U-shaped elbows.

In the above technical solution, the center line of the U-shaped elbow is in a vertical plane.

In this solution, the center line of the U-shaped elbow is in the vertical plane, which can make the refrigerant gravity drive effect between the single row heat exchanger units better, and realize the refrigerant between the single row heat exchanger units Switching more smoothly, while avoiding refrigerant blockage between single-row heat exchanger units.

In the above technical solution, the adjacent single-row heat exchanger units are symmetrically distributed with respect to the horizontal plane.

In this solution, the adjacent single-row heat exchanger units are arranged symmetrically with respect to the horizontal plane. In this way, the heat exchangers are partially formed in a horizontal V shape or a horizontal W shape. The product has good compactness, which is conducive to product miniaturization.

An embodiment of the second aspect of the present application provides a heat exchange assembly, including: the heat exchanger described in any one of the above technical solutions; a cold storage working fluid, which is arranged outside the heat exchanger and exchanged with the heat exchanger Heat exchanger heat exchange.

The heat exchange assembly described in the above embodiments of the present application has all the above beneficial effects by providing the heat exchanger described in any one of the above technical solutions, which will not be repeated here.

In the above technical solution, the cold storage working medium includes water.

In any of the above technical solutions, the cold storage working medium includes ice.

In this scheme, the cold storage working medium includes ice. On the one hand, ice has a higher cold storage density. Compared with other cold storage working mediums, under the same heat exchange capacity, the material consumption of the cold storage working medium is smaller. In fact, the volume of cold storage working fluid in air conditioning equipment is also lower, which is more conducive to the development of lightweight and miniaturized products. In addition, the use of ice's density is lower than that of water, so that ice is used as a cold storage working medium, so that the use of floating ice can better condense and cool the high-temperature gas-phase refrigerant at the inlet of the refrigerant, which can make the two working fluids Achieving an effect similar to counter-flow heat exchange makes the heat exchange between the cold storage working medium and the heat exchanger more energy-efficient.

An embodiment of the third aspect of the present application provides an air conditioner, including the heat exchange component described in any one of the above technical solutions.

The air-conditioning equipment described in the above embodiments of the present application has all the above beneficial effects by providing the heat exchange components described in any one of the above technical solutions, which will not be repeated here.

Additional aspects and advantages of the present application will become apparent in the following description section, or be learned through the practice of the present application.

BRIEF DESCRIPTION

The above and/or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

FIG. 1 is a schematic front view structural diagram of the heat exchanger in an embodiment of the present application;

2 is a schematic view of the left side structure of the heat exchanger shown in FIG. 1;

FIG. 3 is a schematic plan view of the heat exchanger shown in FIG. 1;

4 is a schematic diagram of a front view of the heat exchanger in an embodiment of the present application;

5 is a schematic view of the left side structure of the heat exchanger shown in FIG. 4;

6 is a schematic exploded view of the heat exchanger shown in FIG. 4;

7 is a schematic structural view of the integral fin shown in FIG. 4;

8 is a schematic structural view of the integral fin described in an embodiment of the present application;

9 is a schematic structural diagram of the heat exchange assembly according to an embodiment of the present application;

10 is a schematic structural diagram of an air-conditioning device according to an embodiment of the present application.

Among them, the correspondence between the reference signs in FIGS. 1 to 10 and the component names is:

100 heat exchanger, 110 single-row heat exchanger unit, 111 channels, 1111 straight, 1112 curved, 1113 beginning, 1114 end, 112 refrigerant inlet, 113 refrigerant outlet, 114U-shaped elbow, 120 integral fins, 121 oval Holes, 122 tube holes, 130 single-row fins, 200 cold storage medium, 300 containers, 400 air-cooled heat exchangers, 500 fans.

detailed description

In order to be able to more clearly understand the above-mentioned objects, features and advantages of the present application, the present application will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other if there is no conflict.

In the following description, many specific details are set forth in order to fully understand the application. However, the application can also be implemented in other ways than those described here. Therefore, the scope of protection of the application is not subject to the specifics disclosed below. Limitations of the embodiment.

The heat exchanger, the heat exchange assembly, and the air conditioning device according to some embodiments of the present application are described below with reference to FIGS. 1 to 10.

As shown in FIG. 1, the heat exchanger 100 provided in the embodiment of the first aspect of the present application is used to exchange heat with a cold storage working medium 200 so that the refrigerant flowing through the heat exchanger 100 is condensed.

Among them, the heat exchanger 100 includes at least one single-row heat exchanger unit 110, the single-row heat exchanger unit 110 is formed with a channel 111 for refrigerant circulation, the single-row heat exchanger unit 110 is inclined with respect to the horizontal plane, and the channel 111 flows along The direction has a tendency to decrease in position, and it can also be understood that the position of each partial region arranged along the flow direction of the channel 111 is adjusted along the direction of gravity G.

It can be understood that the flow direction is the main flow direction of the refrigerant along the channel 111 (ignoring the interference factors such as turbulent fluid), and more specifically, it can be understood as the main flow direction of the refrigerant along the channel 111 under the cooling condition.

More specifically, for example, as shown in FIG. 1, the dot-and-dash line h indicates a horizontal or horizontal line, a single-row heat exchanger unit 110 is located above the dot-and-dash line h, and the single-row heat exchanger unit 110 and the dot-and-dash line An angle α is formed between the lines h. In this structure, the value of the angle α satisfies: 0°<α<90°.

The heat exchanger 100 provided in the above embodiment of the present application uses gravity potential energy in the heat exchanger 100 to perform work to drive the refrigerant. On the one hand, while improving the discharge efficiency of the liquid refrigerant, it does not introduce functional consumption, making the air conditioning equipment consume energy Lower, on the other hand, since the potential energy of gravity can cause the refrigerant to drain out by gravity sinking, the structure uses the single-row design of the single-row heat exchanger unit 110 to improve the condensation efficiency, while the heat exchanger There will be no liquid refrigerant blockage in 100, which reduces the pressure inside the heat exchanger 100, improves the siphon effect of the refrigerant circuit, and thus improves the efficiency and smoothness of the refrigerant circulation of the entire air-conditioning equipment, making the air-conditioning equipment cooling more stable. In other words, the performance matching of the heat exchanger 100 in the air-conditioning equipment is improved, so that while the cooling efficiency is improved, the cooling operation of the air-conditioning equipment is more stable, the air outlet temperature is more uniform, and the use experience is better.

In this embodiment, as shown in FIG. 1, the inclination angle α of the single-row heat exchanger unit 110 with respect to the horizontal plane is further preferably 5° to 30°. In this way, while achieving the driving effect of gravity potential energy on the refrigerant, the refrigerant has sufficient residence time in the heat exchanger 100, thereby ensuring that the condensation efficiency of the refrigerant is kept efficient, and at the same time, it is conducive to saving a high space of the product and conducive to The overall size of the product is reduced to achieve the miniaturized design of the product. In addition, in terms of the cold storage working fluid 200, the angle limitation can also make the temperature difference between the upper and lower regions inside the cold storage working fluid 200 smaller, and suppress the temperature stratification inside the cold storage working fluid 200. This phenomenon promotes the temperature uniformity inside the cold storage working medium 200 to a certain extent, and ensures the heat exchange efficiency of the cold storage working medium 200 and the heat exchanger 100.

In an embodiment of the present application, as shown in FIG. 3, the single-row heat exchanger unit 110 includes a single-row heat exchange tubes distributed, and the heat-exchange tubes serve as channels 111 for the refrigerant to circulate. In other words, the single-row heat exchanger unit 110 is the single-row heat exchanger 100 in the tube heat exchanger 100.

In other embodiments, a single-row heat exchanger unit 110 may also be designed as a plate heat exchanger 100 with channels 111 distributed in a single row.

In this embodiment, as shown in FIG. 3, the heat exchanger 100 further includes fins, and the fins are nested outside the heat exchange tubes. A person skilled in the art can understand that a plurality of fins can be simultaneously sleeved on the heat exchange tube according to requirements.

In addition, those skilled in the art can understand that the fin is a metal sheet structure, and a fin is placed on the heat exchange tube. When the whole heat exchanger 100 is immersed in the cold storage medium 200, it is equivalent to the side of the cold storage medium 200 A metal material with enhanced thermal conductivity is added, and the metal material can be used to overcome the thermal resistance of the energy storage working medium, and to efficiently homogenize the heat inside the energy storage working medium, so that the heat exchange efficiency of the heat exchanger 100 and the cold storage working medium 200 is improved.

In this embodiment, as shown in FIGS. 1 to 3, the fins include single-row fins 130. The single-row fins 130 are used for a single-row heat exchanger 100 unit to be sleeved and connected thereto. It can be understood that multiple single-row fins 130 can be sleeved on a single-row heat exchanger 100 unit.

In this embodiment, the heat exchanger 100 includes a plurality of single-row heat exchanger 100 units, wherein each single-row heat exchanger 100 unit is individually sleeved with single-row fins 130, and each single-row type The single-row fins 130 on the heat exchanger 100 unit are relatively independent. In this way, the overall shape and heat exchange area of the heat exchanger 100 can be flexibly adjusted, for example, the angle between adjacent single-row heat exchanger 100 units can be flexibly adjusted, or each The number of single-row fins 130 connected to the unit of the single-row heat exchanger 100 is individually increased, decreased, and adjusted. It is good for checking the quality of products and improving the accuracy of heat exchange. At the same time, it is also conducive to the adaptive use of heat exchanger 100 in different types of air-conditioning equipment, which is good for the promotion of products in the field.

More specifically, in this embodiment, as shown in FIGS. 1 and 2, the heat exchanger 100 includes four single-row heat exchanger 100 units. As shown in FIG. 1, the single-row fins 130 are divided into Four groups, as shown in FIG. 2 and FIG. 3, each group may include a plurality of single-row fins 130, and the single-row fins 130 of each group are relatively and spaced apart. Among them, one group of single-row fins 130 The sheet 130 is assembled with a single-row heat exchanger 100 unit.

Optionally, the single-row fin 130 is provided with a tube hole 122 suitable for the cross-sectional shape of the heat exchange tube, and the heat exchange tube passes through the tube hole 122.

For the above alternative solution, after the heat exchange tube is threaded into the tube hole 122, the heat exchange tube may be expanded, so that in the resulting product, the heat exchange tube and the single row of fins 130 expand at the relative position Pipe joint.

For the above optional solution, the tube expansion process may not be performed, and the size and shape of the tube hole 122 and the heat exchange tube are adjusted so that the heat exchange tube penetrates into the tube hole 122 and forms a tight fit with the tube hole 122 To realize the insertion and fixation between the heat exchange tube and the single-row fin 130 by using the adaptability of the heat exchange tube and the tube hole 122, without the need for welding or tube expansion, the process is more simplified.

Optionally, the heat exchange tube is configured with a U-tube part (for example, a U-shaped tube is used for the part of the heat-exchange tube, and the U-shaped tube is used as the U-tube part), and the single-row fin 130 is provided with an oblong hole 121 and a U-tube The part is inserted into the oblong hole 121.

In another embodiment of the present application, different from the above-mentioned single-row fin 130 structure, an integral fin 120 is used to cooperate with the heat exchange tube. For example, the integral fin 120 is used to connect at least two single-row heat exchanger units 110 to the jacket. As shown in FIG. 4, in this embodiment, the heat exchanger 100 includes four single-row heat exchanger units 110, and the integrated fin 120 is used to connect the four single-row heat exchanger units 110 to the jacket for example It is illustrated that the integral fin 120 is provided with four sets of piercing portions, and the four single-row heat exchanger units 110 are connected to the four sets of piercing portions in one-to-one correspondence with each other, so that the four single-row heat exchanger units 110 can be worn It is connected to the same integral fin 120, and it can be understood that, as shown in FIG. 5, for the same heat exchanger 100, the number of integral fins 120 may also be multiple, and the multiple integral fins 120 are opposite and Distributed at intervals, the four single-row heat exchanger units 110 are connected to the plurality of integral fins 120 in the aforementioned form.

In this embodiment, as shown in FIGS. 6 and 7, the piercing portion may specifically include an oblong hole 121 to use the oblong hole 121 to perforate each U-tube portion of the single-row heat exchanger unit 110.

In other embodiments, as shown in FIG. 8, the piercing portion may specifically include a tube hole 122 to connect the tube hole 122 to a single heat exchange tube. At this time, the tube hole 122 and the heat exchange tube may be For inserting and fixing, the expansion joint can also be formed through the expansion process.

In any of the above embodiments, the channel 111 includes a serpentine channel. More specifically, in this embodiment, the heat exchange tube is used to form a channel 111 for the refrigerant to circulate, and accordingly, the serpentine channel is defined by the serpentine tube. Of course, those skilled in the art can understand that for the embodiment in which a single-row heat exchanger unit 110 uses a plate heat exchanger, a serpentine channel can be constructed by the ribs on the plate body of the plate heat exchanger, and the technology is Those skilled in the art are well-known and will not repeat them here.

In this embodiment, as shown in FIG. 3, the serpentine channel includes a straight 1111 and a curved 1112. The number of the straight 1111 is multiple, and the multiple straights 1111 are arranged side by side in an oblique downward direction. In this way, the straight Between 1111, there is a trend of decreasing position to realize the driving effect of gravity potential energy on the refrigerant. In addition, a curve 1112 is connected between adjacent straight paths 1111. The curve 1112 plays a connecting effect, and at the same time, a curve is formed between the straight paths 1111, corresponding Baffling the refrigerant helps to promote the conversion of the refrigerant from the gas phase to the liquid phase, improve the condensation efficiency, and at the same time ensure that no gas phase refrigerant is discharged, improve the refrigeration efficiency and the uniformity of the outlet temperature.

In this embodiment, as shown in FIG. 3, the straight paths 1111 are parallel. In this way, the space utilization rate of the serpentine channel can be improved, the overall size of the product can be reduced, and the miniaturized design of the product can be realized.

In this embodiment, as shown in FIG. 1, the straight 1111 is arranged horizontally. In this way, by arranging a plurality of horizontal straight channels 1111 side by side in an oblique downward direction, the serpentine channel can be formed in a trend of stepwise decrease along the flow direction, and the purpose of driving the gravitational potential energy can be achieved while making the serpentine channel The maximum space utilization rate is conducive to the reduction of the overall size of the product and the miniaturization of the product.

In any of the above embodiments, the heat exchanger 100 has multiple single-row heat exchanger units 110, the multiple single-row heat exchanger units 110 are arranged along the direction of gravity G, and the multiple single-row heat exchanger units 110 Are connected in sequence along the direction of gravity G. While increasing the heat exchange area of the heat exchanger 100, in terms of refrigerant fluidity, gravity potential energy can be used to drive the refrigerant to flow between multiple single-row heat exchanger units 110. In this way, each single-row heat exchanger unit 110 No refrigerant is retained, which makes the cooling efficiency of the air conditioning equipment higher and the siphon effect better. In terms of product volume, the arrangement of multiple single-row heat exchanger units 110 along the direction of gravity G is more conducive to the reduction of the overall size of the product and the realization of the product Miniaturized design.

More specifically, as shown in FIG. 3, the dotted arrows indicate the flow direction of the refrigerant, where the channel 111 has a starting end 1113 and an end 1114, and the definition of the starting end 1113 and the end 1114 refers to the flow direction of the refrigerant, specifically, for example, the channel 111 The end for the refrigerant to enter is the beginning 1113, and the end for the passage 111 for the refrigerant to exit is the end 1114.

As shown in FIG. 2, in the adjacent single-row heat exchanger unit 110, the starting end 1113 of the channel 111 of the lower single-row heat exchanger unit 110 communicates with the end of the channel 111 of the upper single-row heat exchanger unit 110 1114. In this way, the channels 111 of the upper and lower single-row heat exchanger units 110 are connected end to end, which can ensure that the refrigerant in each channel 111 of the multiple single-row heat exchanger units 110 can be exhausted by gravity potential energy. There will be no problems of refrigerant residue and blockage, improving the cooling efficiency.

In this embodiment, as shown in FIG. 1, among the plurality of single-row heat exchanger units 110, a refrigerant inlet 112 for supplying refrigerant to the heat exchanger 100 is formed at the top end of the topmost single-row heat exchanger unit 110. The position of the refrigerant inlet 112 can be made as high as possible to enhance the driving effect of gravitational potential energy, and the gas-phase refrigerant entering the heat exchanger 100 basically flows downward along the channel 111 without upward shunting. The refrigerant circuit of the entire air-conditioning equipment The siphon effect is more stable, which makes the cooling operation of the air conditioning equipment more stable, the air temperature is more uniform, and the experience is better.

In this embodiment, as shown in FIG. 1, among the plurality of single-row heat exchanger units 110, the bottom end of the single-row heat exchanger unit 110 is formed with a refrigerant outlet 113 for discharging refrigerant out of the heat exchanger 100 . The position of the refrigerant inlet 112 can be made as low as possible to improve the driving effect of the gravitational potential energy, and the refrigerant can be discharged from the heat exchanger 100 as much as possible, to avoid the problem of residual refrigerant and improve the refrigeration efficiency.

Preferably, as shown in FIG. 2, adjacent single-row heat exchanger units 110 are connected by U-shaped elbows 114. That is, the end 1114 of the channel 111 of the upper single-row heat exchanger unit 110 is connected to the beginning end 1113 of the channel 111 of the lower single-row heat exchanger unit 110 by a U-shaped elbow 114.

More preferably, as shown in FIG. 1, the center line of the U-shaped elbow 114 is in a vertical plane. In this way, the gravity driving effect of the refrigerant between the single-row heat exchanger units 110 is better, and the refrigerant can be smoothly switched between the single-row heat exchanger units 110, while avoiding the Refrigerant block.

In this embodiment, as shown in FIG. 1, adjacent single-row heat exchanger units 110 are symmetrically distributed about the horizontal plane. In this way, the heat exchanger 100 is partially formed in a horizontal V shape or a horizontal W shape, and the product has good compactness, which is advantageous for miniaturization of the product.

It is worth noting that the effect of the heat exchanger 100 is described based on the angle of refrigerant condensation in any of the above embodiments, but it does not specifically mean that the heat exchanger 100 of the embodiment of the present application can only be used as a condenser On the contrary, the heat exchanger 100 of the present application can also be used as an evaporator, for example, for the case where the air-conditioning equipment runs the energy storage mode to regenerate the cold storage working fluid 200, the heat exchanger 100 acts as an evaporator to flow through it The refrigerant will take away the heat of the cold storage medium 200, and realize the regeneration of the cold storage medium 200.

As shown in FIG. 9, the heat exchange assembly provided by the embodiment of the second aspect of the present application includes the heat exchanger 100 and the cold storage working fluid 200 described in any one of the above technical solutions. The cold storage working fluid 200 is provided in the heat exchanger 100 Heat exchange with the heat exchanger 100.

Optionally, the cold storage working medium 200 includes water and/or ice.

The heat exchange assembly described in the above embodiments of the present application is suitable for air conditioning equipment without a compressor refrigeration system. In the heat exchange assembly, the inside of the heat exchanger 100 is a refrigerant, and the outside is a cold storage medium 200 (such as water or ice). Gaseous refrigerant enters the heat exchanger 100 from the refrigerant inlet 112, and the refrigerant flows through the heat exchanger 100 and becomes liquid after being cooled by water or ice at a lower temperature outside the heat exchanger 100. The middle single-row heat exchanger unit 110 is at a certain angle of inclination to the horizontal plane. The liquid refrigerant flows down through the gravity and flows out of the refrigerant outlet 113. The condensed refrigerant has a low temperature and can be used as a cooling source.

In this embodiment, as shown in FIG. 9, the heat exchange assembly further includes a container 300, the cold storage working medium 200 is accommodated in the container 300, and the heat exchanger 100 is located in the container 300 and immersed in the cold storage working medium 200.

As shown in FIG. 10, the air conditioning device provided by the embodiment of the third aspect of the present application includes the heat exchange assembly described in any of the above embodiments.

More specifically, as shown in FIG. 10, the air-conditioning apparatus further includes an air-cooled heat exchanger 400 and a fan 500. The fan 500 is used to drive the airflow to exchange heat with the air-cooled heat exchanger 400, wherein one of the air-cooled heat exchangers 400 The port is connected to the refrigerant outlet 113 of the heat exchanger 100 through a refrigerant tube, and the other port of the air-cooled heat exchanger 400 is connected to the refrigerant inlet 112 of the heat exchanger 100 through a refrigerant tube, thereby forming a refrigerant circuit. The refrigerant is in the air-cooled heat exchanger 400 After evaporating into a gaseous state, the gaseous refrigerant is discharged into the heat exchanger 100 along the refrigerant inlet 112. In the process of the heat exchanger 100, the refrigerant flows through the heat exchanger 100, and is cooled by the cold temperature storage outside the heat exchanger 100. After cooling, the mass 200 becomes liquid. Because the single-row heat exchanger unit 110 in the heat exchanger 100 forms a certain inclination with the horizontal plane, the liquid refrigerant flows down through the gravity, flows out from the refrigerant outlet 113, and is discharged into the air cooling exchange The heater 400 is re-used for evaporation to realize refrigerant circulation.

In summary, the heat exchanger, heat exchange component and air conditioning equipment provided in this application use gravity potential energy to perform the work of driving the refrigerant in the heat exchanger. On the one hand, while improving the discharge efficiency of the liquid refrigerant, no function will be introduced Energy consumption, which lowers the energy consumption of air-conditioning equipment. On the other hand, due to the potential energy of gravity can cause the refrigerant to drain out by gravity, the structure uses the single-row design of the single-row heat exchanger unit to improve the condensation efficiency At the same time, there will be no liquid refrigerant clogging in the heat exchanger, thereby reducing the pressure inside the heat exchanger, improving the siphon effect of the refrigerant circuit, and thereby improving the efficiency and smoothness of the refrigerant circulation of the entire air conditioning equipment, making the air conditioning equipment more cooling Stability, generally speaking, improves the performance matching of the heat exchanger in the air-conditioning equipment, so as to achieve the improvement of cooling efficiency, make the cooling operation of the air-conditioning equipment more stable, the air temperature is more uniform, and the user experience is better.

In this application, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance; the term "plurality" refers to two or two Above, unless otherwise specifically limited. The terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, "connection" may be a fixed connection, a detachable connection, or an integral connection; "connection" may It is directly connected, or indirectly connected through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms “G”, “upper”, “lower”, etc. is based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the application and The description is simplified, rather than indicating or implying that the referred device or unit must have a specific direction, be constructed and operated in a specific orientation, and therefore, it should not be construed as limiting the present application.

In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in this application In at least one embodiment or example. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above are only the preferred embodiments of the present application, and are not used to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of this application shall be included in the scope of protection of this application.

Claims

A heat exchanger, including:

At least one single-row heat exchanger unit, the single-row heat exchanger unit is formed with a passage for refrigerant to circulate, the single-row heat exchanger unit is inclined with respect to a horizontal plane, and the passage is lowered in the flow direction trend.
The heat exchanger according to claim 1, wherein

The single-row heat exchanger unit includes a single row of heat exchange tubes distributed, the heat exchange tubes forming the channel.
The heat exchanger according to claim 2, further comprising:

The fins are nested outside the heat exchange tube.
The heat exchanger according to claim 3, wherein

The fins include single-row fins, and the single-row fins are configured for one single-row heat exchanger unit to be sleeve-connected therewith.
The heat exchanger according to claim 3, wherein

The fins include integral fins, and the integral fins are configured to connect at least two of the single-row heat exchanger units to the jacket.
The heat exchanger according to any one of claims 3 to 5, wherein

The fins and the heat exchange tubes are adapted to be inserted and fixed to each other.
The heat exchanger according to any one of claims 3 to 5, wherein

The heat exchange tubes and the fins form expansion tube joints at opposite positions.
The heat exchanger according to any one of claims 3 to 6, wherein

The heat exchange tube is configured with a U-tube portion, the fin is provided with an oblong hole, and the U-tube portion is sleeved in the oblong hole.
The heat exchanger according to any one of claims 3 to 7, wherein

The fin is provided with a tube hole suitable for the cross-sectional shape of the heat exchange tube, and the heat exchange tube passes through the tube hole.
The heat exchanger according to any one of claims 1 to 9, wherein

The channel includes a serpentine channel.
The heat exchanger according to claim 10, wherein

The serpentine channel includes straight roads and curved roads, and the number of the straight roads is multiple, and a plurality of the straight roads are arranged side by side in an oblique downward direction, wherein the curved roads are connected between adjacent straight roads .
The heat exchanger according to claim 11, wherein

The straights are parallel.
The heat exchanger according to claim 11 or 12, wherein

The straights are arranged horizontally.
The heat exchanger according to any one of claims 1 to 13, wherein

The inclination angle of the single-row heat exchanger unit with respect to the horizontal plane is 5° to 30°.
The heat exchanger according to any one of claims 1 to 14, wherein

The heat exchanger has multiple single-row heat exchanger units, the multiple single-row heat exchanger units are arranged along the direction of gravity, and the multiple single-row heat exchanger units are arranged along the direction of gravity Connect in turn.
The heat exchanger according to claim 15, wherein

The channel is formed with a beginning and an end along the flow direction;

In the adjacent single-row heat exchanger units, the start end of the channel of the single-row heat exchanger unit on the lower side communicates with the end of the channel of the single-row heat exchanger unit on the upper side.
The heat exchanger according to claim 15 or 16, wherein

Among the plurality of single-row heat exchanger units, the top end of the single-row heat exchanger unit is formed with a refrigerant inlet through which refrigerant enters the heat exchanger.
The heat exchanger according to any one of claims 15 to 17, wherein

Among the plurality of single-row heat exchanger units, a refrigerant outlet for discharging refrigerant out of the heat exchanger is formed at the bottom end of the single-row heat exchanger unit at the bottom end.
The heat exchanger according to any one of claims 15 to 18, wherein

U-shaped elbows are connected between the adjacent single-row heat exchanger units.
The heat exchanger according to claim 19, wherein

The center line of the U-shaped elbow is in a vertical plane.
The heat exchanger according to any one of claims 15 to 20, wherein

Adjacent single row heat exchanger units are symmetrically distributed about the horizontal plane.
A heat exchange component, including:

The heat exchanger according to any one of claims 1 to 21;

The cold storage working medium is arranged outside the heat exchanger and exchanges heat with the heat exchanger.
The heat exchange assembly of claim 22, wherein

The cold storage working medium includes water.
The heat exchange assembly according to claim 22 or 23, wherein

The cold storage working medium includes ice.
An air-conditioning apparatus including the heat exchange assembly according to any one of claims 22 to 24.