CN111642132A

CN111642132A - Heat exchanger, heat exchange assembly and air conditioning equipment

Info

Publication number: CN111642132A
Application number: CN201980002830.9A
Authority: CN
Inventors: 刘和成; 岳宝; 林晨; 大森宏
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: 2019-01-02
Filing date: 2019-01-02
Publication date: 2020-09-08
Also published as: WO2020140211A1

Abstract

A heat exchanger, a heat exchange device and an air conditioning equipment, wherein the heat exchanger (100) comprises: the heat exchanger comprises at least one single-row heat exchanger unit (110), wherein a channel (111) for the circulation of a refrigerant is formed in the single-row heat exchanger unit (110), the single-row heat exchanger unit (110) is inclined relative to a horizontal plane, and the channel (111) is in a position descending trend along the flow direction of the refrigerant. The single-row heat exchanger unit (110) realizes the automatic outward discharge of the refrigerant by utilizing the gravity of the refrigerant, improves the refrigerant circulation efficiency and enables the refrigeration operation of the air conditioning equipment to be more stable.

Description

Heat exchanger, heat exchange assembly and air conditioning equipment

Technical Field

The application relates to the field of heat exchangers, in particular to a heat exchanger, a heat exchange assembly and air conditioning equipment.

Background

The building air conditioner is a large energy-consuming user in each industry, and the reduction of the electricity consumption peak has important significance for relieving the contradiction between energy supply and demand. The cold accumulation air conditioning technology can realize peak clipping and valley filling, and has become a research hotspot in the industry.

In the cold storage air conditioning technology, the prior art provides a refrigeration system without external force drive, and the principle is as follows: when certain temperature difference exists between the cold accumulation working medium and the environment, the refrigerant can be driven in a natural siphon mode by fully utilizing the density difference of gas/liquid refrigerant, and the specific process is as follows: in the evaporator, the liquid refrigerant evaporates and absorbs heat in the environment to provide cold energy, in the condenser, the evaporated gaseous refrigerant is cooled by the cold accumulation working medium to become liquid, and the liquid flows downwards under the action of gravity and enters the evaporator again.

The effect of the refrigeration mode without power consumption is high for the design requirement of the heat exchanger, the better design scheme can make the refrigeration effect more obvious, the generated refrigeration capacity meets the requirement of a user, and on the contrary, the requirement can not be met.

Disclosure of 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.

It is still another object of the present application to provide an air conditioning apparatus 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: the single-row heat exchanger unit is provided with a channel for the circulation of refrigerant, is inclined relative to the horizontal plane and enables the channel to have the trend of lowering the position along the flow direction.

It is worth mentioning that the single row heat exchanger unit is inclined with respect to the horizontal plane, and it is understood that the single row heat exchanger unit forms an angle with the horizontal plane in a range of more than 0 ° and less than 90 °.

The heat exchanger provided by the above embodiment of the application, the refrigerant driving is realized by applying work by using gravitational potential energy in the heat exchanger, on one hand, the working energy consumption is not introduced while the liquid refrigerant discharge efficiency is improved, so that the energy consumption of the air conditioning equipment is lower, on the other hand, the refrigerant can be automatically discharged in a gravity sinking mode due to the gravitational potential energy, the structure improves the condensation efficiency by using the single-row type design of the single-row heat exchanger unit, and on the other hand, the liquid refrigerant blocking phenomenon does not occur in the heat exchanger, thereby reducing the pressure inside the heat exchanger, improving the siphon effect of a refrigerant loop in the air conditioning equipment, further improving the refrigerant circulation efficiency and the smoothness of the whole air conditioning equipment, and making the air conditioning equipment refrigerate more stably, on the whole, the performance matching performance of the heat exchanger in the air conditioning equipment is improved, thereby, the refrigerating operation of the air conditioning equipment is more stable while the, the air outlet temperature is more even, and the use experience is better.

In addition, the heat exchanger in the above embodiments provided in the present 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 distributed heat exchange tubes, and the heat exchange tubes form the channels.

In this scheme, set up the tubular heat exchanger of single heat exchanger unit for the heat exchange tube that includes the single row and distribute to make tubular heat exchanger's heat exchange tube form the passageway that is used for the refrigerant circulation, not only have the heat transfer high efficiency, and such simple structure, the processing cost is low, also difficult the appearance blocks, leaks the scheduling problem, and the maintenance cost reduces, thereby promotes the price/performance ratio of product.

In the above technical solution, the heat exchanger further includes: and the fins are nested on the outer side of the heat exchange tube.

In this scheme, set up the fin nestification in the outside of heat exchange tube, utilize the fin can increase the heat transfer area between heat exchanger and the cold-storage working medium, promote the heat exchange efficiency to the refrigerant, simultaneously, inlay through the fin and insert in the cold-storage working medium, also can make the inside fin heat conduction that utilizes of cold-storage working medium, compensate the inside heat defect that hinders of cold-storage working medium, realize promoting the inside heat homogenization between each region of cold-storage working medium for can maintain effective difference in temperature in order to ensure the heat transfer high efficiency between cold-storage working medium and the heat exchanger.

In the above technical solution, the fins include single-row fins, and the single-row fins are configured to be sleeved with one single-row heat exchanger unit.

In this scheme, set up single formula fin, make its and the assembly of the single formula heat exchanger unit that corresponds, can adjust heat exchanger's whole molding and heat transfer area isoparametric in a flexible way like this, can do benefit to the check of product quality, promote the heat transfer precision, simultaneously, also do benefit to the heat exchanger and carry out the adaptability application in the air conditioning equipment of different models, do benefit to the product and promote in the field.

In the above technical solution, the fins include integral fins configured to be connected to the single-row heat exchanger units in a penetrating manner.

In this scheme, set up integral fin, make its and the assembly of two at least single heat exchanger units, not only can further promote the total heat transfer area of heat exchanger like this, and can further strengthen the inside thermal uniformity who reaches between a plurality of single heat exchanger units of cold-storage working medium, synthesize and promote the heat transfer high efficiency between cold-storage working medium and the heat exchanger, promote the condensation efficiency to the refrigerant.

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

In this scheme, it is fixed to set up to inlay each other between fin and the heat exchange tube and insert, and like this, packaging efficiency is higher between fin and the heat exchange tube, and simultaneously, the technology is also more simplified, product cost reduction.

In any of the above technical solutions, the heat exchange tube and the fin form an expanding joint at opposite positions.

In this scheme, set up heat exchange tube and fin and form the expand tube joint in relative position, like this, the combination compactness between heat exchange tube and the fin is better, and heat conduction efficiency is higher, can promote the heat exchange efficiency of refrigerant and cold-storage working medium.

In any one of the above technical schemes, the heat exchange tube is constructed with a U-tube portion, the fin is provided with a long round hole, and the U-tube portion is sleeved in the long round hole.

In this scheme, set up between heat exchange tube and the fin and form the adaptation of inserting of inlaying of U tube portion and slotted hole, like this, the poling process of heat exchanger reduces, and the generation efficiency is higher to reduce product cost.

In any of the above technical solutions, the fin is provided with a tube hole having a shape corresponding to the cross section of the heat exchange tube, and the heat exchange tube is sleeved in the tube hole.

In this scheme, set up the heat exchange tube and wear to overlap in the tube hole with its cross sectional shape adaptation, for example, to circular heat exchange tube, corresponding design tube hole is the round hole that suits with the heat exchange tube, perhaps, to oval heat exchange tube, corresponding design tube hole is the elliptical aperture that suits with the heat exchange tube etc. like this, the heat exchange tube is bigger with the fin combination area, and heat conduction efficiency is higher, can promote the heat exchange efficiency of refrigerant and cold-storage working medium.

In any of the above embodiments, the channel comprises a serpentine channel.

In this scheme, set up the passageway and include serpentine channel, can increase the heat transfer area of heat exchanger like this with the mode that extends refrigerant circulation route, and serpentine channel's design also can make the refrigerant form the baffling, does benefit to and makes the refrigerant follow gaseous phase to liquid phase conversion, promotes condensation efficiency, ensures simultaneously not to have gaseous phase refrigerant to discharge, promotes refrigeration efficiency and air-out temperature homogeneity.

In the above technical scheme, serpentine channel includes straight way and bend, the quantity of straight way is a plurality of, and a plurality of straight ways distribute side by side along the decurrent direction of slope, wherein, adjacent link up between the straight way the bend.

In this scheme, set up between a plurality of straight courses and distribute side by side along the decurrent direction of slope, like this, be the trend that the position reduces between the straight course, realize the driving action of gravitational potential energy to the refrigerant, the bend plays the intercommunication effect, make simultaneously and form the turn between the straight course, correspondingly make the refrigerant form the baffling, do benefit to and promote the refrigerant from gaseous phase to liquid phase conversion, promote condensation efficiency, ensure simultaneously not to have gaseous phase refrigerant to discharge, promote refrigeration efficiency and air-out temperature homogeneity.

In the above technical scheme, the straight lanes are parallel to each other.

In this scheme, set up between the straight way parallel, can promote serpentine channel's space utilization like this, do benefit to the reduction of product overall dimension, realize the miniaturized design of product.

In the above technical scheme, the straight lanes are arranged horizontally.

In this scheme, set up the straight way horizontal arrangement, like this, through with distributing side by side along the decurrent direction of slope between a plurality of horizontal straight ways, can make serpentine channel overall formation be the trend that the echelonment reduces along flow direction position, when realizing the gravitational potential energy drive purpose for serpentine channel's space utilization maximize does benefit to product overall dimension and reduces, realizes the miniaturized design of product.

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

In this scheme, the inclination of design single heat exchanger unit for the horizontal plane is 5 ~ 30, when realizing the driving action of gravitational potential energy to the refrigerant, make the refrigerant have sufficient dwell time in the heat exchanger, thereby guarantee to keep high-efficiently to the condensation efficiency of refrigerant, also can be favorable to saving the high space of product simultaneously, do benefit to the reduction of product overall dimension, realize the miniaturized design of product, in addition, in the aspect of cold-storage working medium, this angle is injectd and also can be makeed the difference in temperature between the inside upper and lower region of cold-storage working medium less, restrain the inside temperature stratification phenomenon of cold-storage working medium, promote the inside temperature of cold-storage working medium even to a certain extent, ensure cold-storage working medium and heat exchanger heat transfer high.

In any of the above technical solutions, the heat exchanger has a plurality of the single-row heat exchanger units, the plurality of the single-row heat exchanger units are arranged along the direction of gravity, and the plurality of the single-row heat exchanger units are sequentially connected along the direction of gravity.

In this scheme, it arranges along the direction of gravity between a plurality of single heat exchanger units to set up, and link to each other in proper order along the direction of gravity, when promoting heat exchanger heat transfer area, in the aspect of refrigerant mobility, usable gravitational potential energy realizes that the drive refrigerant flows between a plurality of single heat exchanger units, and thus, can not be detained the refrigerant in each single heat exchanger unit, make air conditioning equipment's refrigeration efficiency higher, and the siphon effect is better, in the aspect of the product volume, arrange along the direction of gravity between a plurality of single heat exchanger units and more do benefit to the reduction of product overall dimension, realize the miniaturized design of product.

In the above technical solution, the channel is formed with a start end and a tail end along the flow direction; in the adjacent single-row heat exchanger units, the initial ends of the channels of the lower single-row heat exchanger unit are communicated to the tail ends of the channels of the upper single-row heat exchanger unit.

In this scheme, form end to end between the passageway of upper and lower single heat exchanger unit, can ensure like this that the coolant in the passageway of each in a plurality of single heat exchanger units all can utilize gravitational potential energy to arrange to the greatest extent, can not have the coolant to remain, retardant problem, promote refrigeration efficiency.

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

In this scheme, the refrigerant import with the heat exchanger sets up the top position at the single heat exchanger unit of topmost, like this, can be so that the position of refrigerant import is as high as possible, promotes the drive effect of gravitational potential energy, and the gaseous phase refrigerant that gets into the heat exchanger flows downwards along the passageway basically, can not ascending reposition of redundant personnel, and the siphon effect in whole air conditioning equipment's the refrigerant return circuit is more stable, makes air conditioning equipment's refrigeration operation more stable, and air-out temperature is more even, uses and experiences better.

In the above technical solution, 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 bottommost end.

In this scheme, set up the refrigerant export of heat exchanger in the bottom position of the single heat exchanger unit of bottommost, like this, can be so that the position of refrigerant import is as low as possible, promotes the drive effect of gravitational potential energy, and is favorable to the refrigerant heat exchanger of discharging as far as possible, avoids the refrigerant to remain the problem, promotes refrigeration efficiency.

In the technical scheme, the adjacent single-row heat exchanger units are connected through the U-shaped elbow.

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

In this scheme, make the central line of U-shaped elbow in vertical plane, can make the gravity drive effect of refrigerant between single heat exchanger unit better like this, realize that the refrigerant switches between single heat exchanger unit more smoothly, avoid simultaneously having the refrigerant to retard between the single heat exchanger unit.

In the above technical scheme, the adjacent single-row heat exchanger units are symmetrically distributed about the horizontal plane.

In this scheme, set up adjacent single heat exchanger unit and distribute about the horizontal plane symmetry, like this, the heat exchanger part forms the V-arrangement of crouching or the W shape of crouching, and the product compactness is good, does benefit to the product miniaturization.

Embodiments of a second aspect of the present application provide a heat exchange assembly, comprising: the heat exchanger in any one of the above technical solutions; and the cold accumulation working medium is arranged on the outer side of the heat exchanger and exchanges heat with the heat exchanger.

The heat exchange assembly in the above embodiment of this application, through being provided with the heat exchanger in above-mentioned arbitrary technical scheme to have above whole beneficial effect, no longer give unnecessary details here.

In the above technical scheme, the cold accumulation working medium comprises water.

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

In the scheme, the cold storage working medium comprises ice, on one hand, the ice has higher cold storage density, and compared with other cold storage working media, the material consumption of the cold storage working medium is smaller under the condition of the same heat exchange capacity, and correspondingly, the volume occupation of the cold storage working medium in the air conditioning equipment is also lower, so that the light weight and miniaturization development of products are facilitated. In addition, the ice is used as a cold accumulation working medium by utilizing the characteristic that the density of the ice is smaller than that of water, so that the high-temperature gas-phase refrigerant at the position of a refrigerant inlet can be efficiently condensed and cooled by utilizing the floating ice, the effect similar to the countercurrent heat exchange can be achieved between the two working media, and the heat exchange efficiency between the cold accumulation working medium and the heat exchanger is higher.

An embodiment of a third aspect of the present application provides an air conditioning apparatus, including the heat exchange assembly in any one of the above technical solutions.

The air conditioning equipment of the above-mentioned embodiment of this application, through being provided with heat exchange assemblies among the above-mentioned arbitrary technical scheme to have above whole beneficial effect, no longer give unnecessary details here.

Additional aspects and advantages of the present application will be set forth in part in the description which follows, or may be learned by practice of the present application.

Drawings

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

FIG. 1 is a schematic front view of a heat exchanger according to an embodiment of the present application;

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

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

FIG. 4 is a schematic front view of a heat exchanger according to an embodiment of the present application;

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

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

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

FIG. 8 is a schematic structural view of the integral fin according to an embodiment of the present application;

FIG. 9 is a schematic structural view of the heat exchange assembly in one embodiment of the present application;

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

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 10 is:

100 heat exchangers, 110 single-row heat exchanger units, 111 channels, 1111 straight channels, 1112 bent channels, 1113 starting ends, 1114 tail ends, 112 refrigerant inlets, 113 refrigerant outlets, 114U-shaped elbows, 120 integral fins, 121 slotted holes, 122 pipe holes, 130 single-row fins, 200 cold accumulation working media, 300 containers, 400 air-cooled heat exchangers and 500 fans.

Detailed Description

In order that the above objects, features and advantages of the present application can be more clearly understood, the present application 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 the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.

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

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

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 flowing a refrigerant, the single-row heat exchanger unit 110 is inclined with respect to a horizontal plane, and the channel 111 has a tendency of decreasing in position along a flow direction, which can also be understood as that the position of each local region of the channel 111 arranged along the flow direction is adjusted along a gravity direction G.

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

More specifically, for example, as shown in fig. 1, a dot-dash line h is illustrated as a horizontal plane or a horizontal line, a single-row heat exchanger unit 110 is located above the dot-dash line h, and an included angle α is formed between the single-row heat exchanger unit 110 and the dot-dash line h, and in this structure, the included angle α satisfies: alpha is more than 0 degree and less than 90 degrees.

In the heat exchanger 100 provided in the above embodiment of the present application, the gravitational potential energy is used to do work in the heat exchanger 100 to drive the refrigerant, on one hand, while the liquid refrigerant discharge efficiency is improved, the work energy consumption is not introduced, so that the energy consumption of the air conditioning equipment is lower, on the other hand, since the gravitational potential energy can cause the refrigerant to be automatically discharged in a gravity sinking manner, in the structure, while the single-row type design of the single-row heat exchanger unit 110 is used to improve the condensation efficiency, the liquid refrigerant blocking phenomenon does not occur in the heat exchanger 100, thereby reducing the pressure inside the heat exchanger 100, improving the siphon effect of the refrigerant loop, further improving the refrigerant circulation efficiency and smoothness of the whole air conditioning equipment, making the refrigeration of the air conditioning equipment more stable, and on the whole, improving the performance matching performance of the heat exchanger 100 in the air conditioning equipment, thereby while the refrigeration efficiency is improved, making the refrigeration operation of the air conditioning, the air outlet temperature is more even, and the use experience is better.

In the present 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 more preferably 5 ° to 30 °. Like this, when realizing the driving action of gravitational potential energy to the refrigerant, make the refrigerant have sufficient dwell time in heat exchanger 100, thereby guarantee to keep high-efficient to the condensation efficiency of refrigerant, also can be favorable to saving the high space of product simultaneously, do benefit to the reduction of product overall dimension, realize the miniaturized design of product, furthermore, in the aspect of cold-storage working medium 200, this angle is injectd and also can be makeed cold-storage working medium 200 inside difference in temperature between the upper and lower region less, restrain the inside temperature layering phenomenon of cold-storage working medium 200, promote the inside temperature of cold-storage working medium 200 even to a certain extent, ensure cold-storage working medium 200 and heat exchanger 100 heat transfer high efficiency.

In one embodiment of the present application, as shown in fig. 3, the single-row heat exchanger unit 110 includes a single row of distributed heat exchange tubes as channels 111 for the flow of refrigerant. In other words, the single row heat exchanger unit 110 is the single row tube heat exchanger 100 of the tube heat exchanger 100.

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

In this embodiment, as shown in fig. 3, the heat exchanger 100 further includes a fin nested outside the heat exchange tube. As can be understood by those skilled in the art, a plurality of fins can be simultaneously sleeved on the heat exchange tube according to requirements.

In addition, as can be understood by those skilled in the art, the fins are of a metal sheet structure, and the fins are sleeved on the heat exchange tubes, so that when the heat exchanger 100 is wholly immersed in the cold storage working medium 200, a metal material for enhancing heat conduction is added on the side of the cold storage working medium 200, the metal material can overcome the thermal resistance of the energy storage working medium, the heat inside the energy storage working medium can be efficiently homogenized, and the heat exchange efficiency of the heat exchanger 100 and the cold storage working medium 200 is improved.

In the present embodiment, as shown in fig. 1 to 3, the fins include single row fins 130, and the single row fins 130 are used for a single row heat exchanger 100 unit to be sleeved and connected therewith. It is understood that a plurality of single-row fins 130 may be inserted into one single-row heat exchanger 100 unit.

In this embodiment, the heat exchanger 100 includes a plurality of single-row heat exchanger 100 units, wherein the single-row fins 130 respectively penetrate through each single-row heat exchanger 100 unit, and the single-row fins 130 on each single-row heat exchanger 100 unit are relatively independent. In this way, parameters such as the overall shape and the heat exchange area of the heat exchanger 100 can be flexibly adjusted, for example, the included angle between adjacent single-row heat exchanger 100 units can be flexibly adjusted, and the number of the single-row fins 130 penetrating through each single-row heat exchanger 100 unit can be individually adjusted. The heat exchanger 100 can be used for checking the product quality, improving the heat exchange precision, and meanwhile, the heat exchanger 100 can be used for adaptability application in air-conditioning equipment of different models, and is beneficial to popularization of products in the field.

More specifically, in the present embodiment, as shown in fig. 1 and 2, the heat exchanger 100 includes 4 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 3, each group may include a plurality of single-row fins 130, and the single-row fins 130 of each group are distributed oppositely and at intervals, wherein one group of single-row fins 130 is cross-connected to one single-row heat exchanger 100 unit.

Optionally, the single-row fins 130 are provided with tube holes 122 adapted to the cross-sectional shapes of the heat exchange tubes, and the heat exchange tubes are sleeved in the tube holes 122.

As an alternative to the above, the heat exchange tube may be expanded after being threaded into the tube hole 122, so that the heat exchange tube is formed into a product in which the heat exchange tube is joined to the single row fins 130 in an opposite position.

For the above alternative, the tube expansion treatment may not be performed, but a mode of adjusting the size and shape of the tube hole 122 and the heat exchange tube is adopted, so that the heat exchange tube is tightly fitted with the tube hole 122 after being penetrated into the tube hole 122, the heat exchange tube and the single-row fins 130 are inserted and fixed by utilizing the adaptability of the heat exchange tube and the tube hole 122, the welding or the tube expansion treatment is not required, and the process is simplified.

Alternatively, the heat exchange tube is configured with U-tube portions (e.g., U-tubes are used as portions of the heat exchange tube), and the single row fins 130 are provided with oblong holes 121, and the U-tube portions are inserted into the oblong holes 121.

In another embodiment of the present application, the integral fins 120 are used in conjunction with heat exchange tubes, unlike the single row fin 130 structure described above. In particular, the integral fins 120 are used for the at least two single-row heat exchanger units 110 to be connected therethrough. As shown in fig. 4, the heat exchanger 100 in this embodiment includes 4 single-row heat exchanger units 110, and it is described that the integral fins 120 are used for allowing the 4 single-row heat exchanger units 110 to be connected with the integral fins in a penetrating manner, where 4 groups of penetrating portions are provided on the integral fins 120, and the 4 single-row heat exchanger units 110 are connected with the 4 groups of penetrating portions in a penetrating manner in a one-to-one correspondence manner, so that the 4 single-row heat exchanger units 110 are penetrated and 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, the multiple integral fins 120 are distributed relatively and at intervals, and the 4 single-row heat exchanger units 110 are penetrated and connected to the multiple integral fins.

In the present embodiment, as shown in fig. 6 and 7, the penetration portion may specifically include an elongated hole 121 to penetrate with the elongated hole 121 each U-tube portion of the single-row heat exchanger unit 110.

In other embodiments, as shown in fig. 8, the penetrating portion may also specifically include a pipe hole 122, so that the pipe hole 122 penetrates through a single heat exchange pipe, in this case, the pipe hole 122 and the heat exchange pipe may be fixed by inserting, or an expanding joint may be formed by an expanding process.

In any of the above embodiments, the channel 111 comprises a serpentine channel. More specifically, in the present embodiment, the heat exchange tubes are used to form the channels 111 through which the refrigerant flows, and accordingly, the serpentine channels are defined by serpentine tubes. Of course, it can be understood by those skilled in the art that for the embodiment of the plate heat exchanger adopted by the single-row heat exchanger unit 110, the serpentine channel can be constructed by the ribs on the plate body of the plate heat exchanger, and the technology is well known to those skilled in the art and will not be described herein again.

In this embodiment, as shown in fig. 3, the serpentine channel includes straight channels 1111 and curved channels 1112, the number of the straight channels 1111 is plural, and the plural straight channels 1111 are distributed side by side along the direction of inclining downwards, such that the straight channels 1111 are in a trend of reducing the position, thereby realizing the driving effect of gravitational potential energy on the refrigerant, in addition, the curved channels 1112 are connected between the adjacent straight channels 1111, the curved channels 1112 play a role in communicating, and simultaneously, the straight channels 1111 are turned, so as to correspondingly baffle the refrigerant, thereby facilitating the conversion of the refrigerant from a gas phase to a liquid phase, improving the condensing efficiency, simultaneously ensuring that no gas phase refrigerant is discharged, and improving the refrigeration efficiency and the uniformity of the outlet air temperature.

In this embodiment, the straight lanes 1111 are parallel to each other as shown in fig. 3. Therefore, the space utilization rate of the serpentine channel can be improved, the overall size of the product is reduced, and the miniaturization design of the product is realized.

In the present embodiment, as shown in fig. 1, the straight lanes 1111 are arranged horizontally. Like this, through with distributing side by side along the decurrent orientation of slope between a plurality of horizontal straight way 1111, can make serpentine channel overall formation be the trend that the echelonment reduces along the flow direction position, when realizing the gravitational potential energy drive purpose for serpentine channel's space utilization maximize does benefit to the reduction of product overall dimension, realizes the miniaturized design of product.

In any of the above embodiments, the heat exchanger 100 has a plurality of single-row heat exchanger units 110, the plurality of single-row heat exchanger units 110 are arranged along the direction of gravity G, and the plurality of single-row heat exchanger units 110 are sequentially connected along the direction of gravity G. When promoting 100 heat transfer area of heat exchanger, in the aspect of the refrigerant mobility, usable gravitational potential energy realizes that the drive refrigerant flows between a plurality of single heat exchanger unit 110, like this, can not be detained the refrigerant in each single heat exchanger unit 110, make air conditioning equipment's refrigeration efficiency higher, and the siphon effect is better, in the aspect of the product volume, arrange along direction of gravity G between a plurality of single heat exchanger unit 110 and more do benefit to the whole size reduction of product, realize the miniaturized design of product.

More specifically, as shown in fig. 3, the dashed arrows indicate the flowing direction of the refrigerant, wherein the channel 111 has a starting end 1113 and a terminal end 1114, the starting end 1113 and the terminal end 1114 are defined with reference to the flowing direction of the refrigerant, specifically, one end of the channel 111 for the refrigerant to enter is the starting end 1113, and one end of the channel 111 for the refrigerant to discharge is the terminal end 1114.

As shown in fig. 2, in the adjacent single-row heat exchanger unit 110, the starting end 1113 of the channels 111 of the lower single-row heat exchanger unit 110 communicates to the ending end 1114 of the channels 111 of the upper single-row heat exchanger unit 110. Therefore, the channels 111 of the upper and lower single-row heat exchanger units 110 are connected end to end, so that the refrigerants in the channels 111 of each single-row heat exchanger unit 110 can be discharged completely by utilizing gravitational potential energy, the problems of refrigerant residue and blockage are avoided, and the refrigeration efficiency is improved.

In the present embodiment, as shown in fig. 1, a refrigerant inlet 112 for allowing a refrigerant to enter the heat exchanger 100 is formed at a top end position of the topmost heat exchanger unit 110 among the plurality of heat exchanger units 110. The position that can make refrigerant import 112 is as high as possible, promotes the drive effect of gravitational potential energy, and the gaseous phase refrigerant that gets into heat exchanger 100 flows downwards along passageway 111 basically, can not ascending reposition of redundant personnel, and the siphon effect in whole air conditioning equipment's the refrigerant return circuit is more stable for air conditioning equipment's refrigeration operation is more stable, and air-out temperature is more even, uses and experiences better.

In the present embodiment, as shown in fig. 1, a refrigerant outlet 113 for discharging the refrigerant out of the heat exchanger 100 is formed at a bottom end position of the single-row heat exchanger unit 110 at the bottom end among the plurality of single-row heat exchanger units 110. The position of the refrigerant inlet 112 can be as low as possible, the driving effect of gravitational potential energy is improved, the refrigerant can be discharged out of the heat exchanger 100 as much as possible, the problem of refrigerant residue is avoided, and the refrigeration efficiency is improved.

Preferably, as shown in fig. 2, adjacent single-row heat exchanger units 110 are joined by U-bends 114. That is, the end 1114 of the channel 111 of the upper-side single-row heat exchanger unit 110 is connected to the beginning 1113 of the channel 111 of the lower-side single-row heat exchanger unit 110 by the U-bend 114.

More preferably, as shown in FIG. 1, the centerline of the U-bend 114 is in a vertical plane. Therefore, the gravity driving effect of the refrigerant between the single-row heat exchanger units 110 is better, the refrigerant is switched more smoothly between the single-row heat exchanger units 110, and the refrigerant blockage between the single-row heat exchanger units 110 is avoided.

In the present embodiment, as shown in fig. 1, the adjacent single-row heat exchanger units 110 are symmetrically distributed about the horizontal plane. Thus, the heat exchanger 100 is partially formed in a horizontal V-shape or a horizontal W-shape, and is compact and advantageous for miniaturization.

It should be noted that, in any of the above embodiments, the effect of the heat exchanger 100 is described based on the angle of condensing the refrigerant, but it is not particularly specified that the heat exchanger 100 of the embodiment of the present application can only be used as a condenser, and conversely, the heat exchanger 100 of the present application can also be used as an evaporator, for example, in the case of an energy storage mode of operation of an air conditioning apparatus to dissipate and regenerate the cold storage working medium 200, the heat exchanger 100 is used as an evaporator to take away the heat of the cold storage working medium 200 by the refrigerant flowing through the heat exchanger, so as to regenerate the cold storage working 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 medium 200 described in any one of the above technical solutions, and the cold storage working medium 200 is disposed outside the heat exchanger 100 and exchanges heat with the heat exchanger 100.

Optionally, the cold storage working fluid 200 comprises water and/or ice.

The heat exchange assembly in the above embodiments of the present application is suitable for an air conditioning apparatus without a compressor refrigeration system, and in the heat exchange assembly, the inner side of the heat exchanger 100 is a refrigerant, and the outer side is a cold storage working medium 200 (such as water or ice). Gaseous refrigerant enters the heat exchanger 100 from the refrigerant inlet 112, and in the process of flowing through the heat exchanger 100, the refrigerant is cooled by water or ice at a lower temperature outside the heat exchanger 100 and then becomes liquid, because a certain inclination angle is formed between the single-row heat exchanger unit 110 in the heat exchanger 100 and the horizontal plane, the liquid refrigerant flows down and flows out from the refrigerant outlet 113 under the action of gravity, and because the temperature of the condensed refrigerant is lower, the condensed refrigerant can be used as a cold source for refrigeration.

In the present 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, an air conditioning apparatus provided in an embodiment of the third aspect of the present application includes the heat exchange assembly described in any of the embodiments above.

More specifically, as shown in fig. 10, the air conditioning equipment further includes an air-cooled heat exchanger 400 and a fan 500, the fan 500 is used for driving an air flow to exchange heat with the air-cooled heat exchanger 400, wherein one port of the air-cooled heat exchanger 400 is connected to a refrigerant outlet 113 of the heat exchanger 100 through a refrigerant pipe, and the other port of the air-cooled heat exchanger 400 is connected to a refrigerant inlet 112 of the heat exchanger 100 through a refrigerant pipe, so as to form a refrigerant loop, after the refrigerant is evaporated into a gaseous state in the air-cooled heat exchanger 400, the gaseous refrigerant is discharged into the heat exchanger 100 along the refrigerant inlet 112, and in the heat exchanger 100, the refrigerant is cooled by the low-temperature cold storage medium 200 outside the heat exchanger 100 and then becomes a liquid state, because the single row of heat exchanger units 110 in the heat exchanger 100 forms a certain inclination angle with the horizontal plane, the liquid refrigerant flows down by the action of gravity, and the refrigerant circulation is realized.

To sum up, the heat exchanger, the heat exchange assembly and the air conditioning equipment provided by the application utilize the gravitational potential energy to do work in the heat exchanger to drive the refrigerant, on one hand, the working energy consumption can not be introduced while the liquid refrigerant discharge efficiency is improved, so that the energy consumption of the air conditioning equipment is lower, on the other hand, the refrigerant can be automatically discharged in a gravity sinking mode due to the gravitational potential energy, on the other hand, the structure can improve the condensation efficiency by utilizing the single-row design of the single-row heat exchanger unit, on the other hand, the liquid refrigerant blocking phenomenon can not occur in the heat exchanger, so that the pressure in the heat exchanger is reduced, the siphon effect of a refrigerant loop is improved, the refrigerant circulation efficiency and the smoothness of the whole air conditioning equipment are improved, the refrigeration of the air conditioning equipment is more stable, on the whole, the performance matching performance of the heat exchanger in the air conditioning equipment is improved, the refrigeration operation of the air conditioning equipment is more stable, the air outlet temperature is more uniform, and the use experience is better.

In this application, the terms "first," "second," and "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 meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present application, it is to be understood that the terms "G", "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or unit must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application.

In the description herein, 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 of the application. 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 description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

A heat exchanger, comprising:

the single-row heat exchanger unit is provided with a channel for the circulation of refrigerant, is inclined relative to the horizontal plane and enables the channel to have the trend of lowering the position along the flow direction.
The heat exchanger according to claim 1,

the single-row heat exchanger unit comprises heat exchange tubes distributed in a single row, and the heat exchange tubes form the channels.
The heat exchanger of claim 2, further comprising:

and the fins are nested on the outer side of the heat exchange tube.
The heat exchanger according to claim 3,

the fins comprise single-row fins, and the single-row fins are configured to be sleeved and connected with one single-row heat exchanger unit.
The heat exchanger according to claim 3,

the fins comprise integral fins configured for at least two of the single row heat exchanger units to be telescopingly connected therewith.
The heat exchanger according to any one of claims 3 to 5,

the fins and the heat exchange tubes are matched to be mutually inserted and fixed.
The heat exchanger according to any one of claims 3 to 5,

the heat exchange tube and the fin form an expanding joint at opposite positions.
The heat exchanger according to any one of claims 3 to 6,

the heat exchange tube is provided with a U-tube part, the fins are provided with oblong holes, and the U-tube part is sleeved in the oblong holes in a penetrating mode.
The heat exchanger according to any one of claims 3 to 7,

the fin is provided with a tube hole which is matched with the cross section of the heat exchange tube in shape, and the heat exchange tube is sleeved in the tube hole in a penetrating manner.
The heat exchanger according to any one of claims 1 to 9,

the channel comprises a serpentine channel.
The heat exchanger according to claim 10,

the serpentine channel comprises straight channels and curved channels, the number of the straight channels is multiple, the straight channels are distributed side by side along the downward inclined direction, and the curved channels are connected between the straight channels.
The heat exchanger according to claim 11,

the straight tracks are parallel to each other.
The heat exchanger according to claim 11 or 12,

the straight channels are horizontally arranged.
The heat exchanger according to any one of claims 1 to 13,

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

the heat exchanger is provided with a plurality of single-row heat exchanger units, the single-row heat exchanger units are arranged along the gravity direction, and the single-row heat exchanger units are sequentially connected along the gravity direction.
The heat exchanger according to claim 15,

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

in the adjacent single-row heat exchanger units, the initial ends of the channels of the lower single-row heat exchanger unit are communicated to the tail ends of the channels of the upper single-row heat exchanger unit.
The heat exchanger according to claim 15 or 16,

and in the single-row heat exchanger units, a refrigerant inlet for allowing refrigerant to enter the heat exchanger is formed at the top end of the single-row heat exchanger unit at the topmost end.
The heat exchanger according to any one of claims 15 to 17,

and 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 bottommost end of the plurality of single-row heat exchanger units.
The heat exchanger according to any one of claims 15 to 18,

and adjacent single-row heat exchanger units are connected through U-shaped elbows.
The heat exchanger according to claim 19,

the centerline of the U-bend is in a vertical plane.
The heat exchanger according to any one of claims 15 to 20,

and the adjacent single-row heat exchanger units are symmetrically distributed around the horizontal plane.
A heat exchange assembly, comprising:

a heat exchanger as claimed in any one of claims 1 to 21;

and the cold accumulation working medium is arranged on the outer side of the heat exchanger and exchanges heat with the heat exchanger.
The heat exchange assembly of claim 22,

the cold storage working medium comprises water.
The heat exchange assembly of claim 22 or 23,

the cold storage working medium comprises ice.
An air conditioning apparatus comprising a heat exchange assembly as claimed in any one of claims 22 to 24.