Multifunctional evaporator and air conditioning system

Abstract

The invention relates to a multifunctional evaporator and an air conditioning system.The multifunctional evaporator comprises a barrel, a first heat exchange pipe set and a defoaming plate, the barrel is provided with a heat exchange cavity, and the defoaming plate is arranged in the heat exchange cavity and divides the heat exchange cavity into a first cavity body and a second cavity body which are distributed in the first direction; a plurality of through holes communicated with the first cavity and the second cavity are formed in the defoaming plate. The first heat exchange tube set is arranged in the second cavity, the barrel is provided with a refrigerant liquid inlet and an exhaust port, the second cavity communicates with the liquid outlet end of the condenser through the refrigerant liquid inlet, and the first cavity communicates with the air suction end of the compressor through the exhaust port. A refrigerant enters the second cavity, exchanges heat with the first heat exchange tube set, then evaporates, enters the first cavity through the through holes and is exhausted from the exhaust port. According to the multifunctional evaporator and the air conditioning system, the problems that a shell and tube evaporator is prone to air suction and liquid carrying, and wet compression of a compressor is caused are solved.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchange equipment, and in particular to a multifunctional evaporator and an air-conditioning system. Background Art

[0002] The shell and tube evaporator consists of two parts: the shell side and the tube side. The refrigerant enters from the lower part of the cylinder and immerses the heat exchanger in the refrigerant liquid from bottom to top. The gaseous refrigerant after heat exchange enters the compressor from the air intake port. Since the air intake port is close to the refrigerant droplets, the high-speed refrigerant gas is easy to entrain the droplets to form liquid foam and rise to the air intake port. In other words, the shell and tube evaporator is easy to inhale liquid, which will cause serious wet compression problems of the compressor. Summary of the invention

[0003] Based on this, it is necessary to provide a multifunctional evaporator and air conditioning system to solve the problem that the shell and tube evaporator is easy to inhale liquid and cause wet compression of the compressor.

[0004] A multifunctional evaporator includes a cylinder, a first heat exchange tube group and a defoaming plate. The cylinder is provided with a heat exchange cavity. The defoaming plate is arranged in the heat exchange cavity and divides the heat exchange cavity into a first cavity and a second cavity distributed along a first direction. The first direction is perpendicular to the axis of the cylinder, and the first cavity is relatively located above the second cavity along the first direction. The defoaming plate is provided with a plurality of through holes, and the through holes connect the first cavity and the second cavity. The first heat exchange tube group is arranged in the second cavity. The side wall of the cylinder near one end of the second cavity is provided with a refrigerant inlet. The side wall of the cylinder near one end of the first cavity is provided with an exhaust port. The second cavity is connected to the liquid outlet of the condenser through the refrigerant inlet, and the first cavity is connected to the air intake end of the compressor through the exhaust port. The refrigerant flowing out of the condenser is filled into the second cavity through the refrigerant inlet and exchanges heat with the first heat exchange tube group. The refrigerant after heat exchange evaporates and moves along the first direction, and enters the first cavity through the through holes on the defoaming plate, and then is discharged from the exhaust port.

[0005] In one embodiment, the defoaming plate includes a plurality of plate bodies and at least one filter screen, the plurality of plate bodies are stacked, the filter screen is sandwiched between adjacent plate bodies, each plate body is provided with a filter hole, and the filter holes of adjacent plate bodies are connected to form a through hole. It can be understood that such a configuration greatly improves the defoaming effect of the defoaming plate.

[0006] In one embodiment, the filter screen is a metal wire screen. It is understandable that such a configuration is conducive to reducing the difficulty of processing the filter screen.

[0007] In one embodiment, the filter screen is formed by weaving at least one wire, and the diameter of the wire is D1, the diameter of the through hole is D2, and D1 and D2 satisfy: It is understandable that such a configuration enables the diameter D2 of the through hole to match the diameter D1 of the wire to enhance the defoaming effect.

[0008] In one embodiment, 0.1 mm ≤ D1 ≤ 0.3 mm, 10 mm ≤ D2 ≤ 40 mm. It can be understood that such a configuration is conducive to further improving the defoaming effect of the defoaming plate.

[0009] In one embodiment, the diameter of the filter holes decreases along the first direction from the second cavity to the first cavity. It is understandable that such a configuration facilitates the filter holes located above to further decompose small liquid foams. In addition, it facilitates the condensed refrigerant droplets to drip into the second cavity along the larger filter holes below.

[0010] In one embodiment, the multifunctional evaporator further includes a second heat exchange tube group, which is disposed in the first cavity and is located above the defoaming plate along the first direction, so that at least part of the refrigerant in the first cavity is discharged from the exhaust port after heat exchange with the second heat exchange tube group. A first inlet and a first outlet are respectively provided at both ends of the cylinder, one end of the second heat exchange tube group is connected to the liquid outlet of the condenser through the first inlet, and the other end of the second heat exchange tube group is connected to the refrigerant liquid inlet through the first outlet. It can be understood that such a configuration is conducive to improving the subcooling of the liquid refrigerant entering the second cavity, and is conducive to improving the superheat of the gaseous refrigerant entering the compressor.

[0011] In one embodiment, the multifunctional evaporator further includes a plurality of guide plates, which are all disposed in the second cavity and divide the second cavity into a plurality of liquid flow channel layers distributed along the first direction, and adjacent liquid flow channel layers are sequentially connected. The first heat exchange tube group is disposed in the liquid flow channel layer, and the flow direction of the coolant in the second heat exchange tube group is opposite to the flow direction of the refrigerant in the liquid flow channel layer. It can be understood that such a configuration is conducive to heat exchange between the refrigerant and the coolant in the second heat exchange tube group.

[0012] In one embodiment, the number of guide plates is two, and the two guide plates are defined as a first guide plate and a second guide plate, respectively. The first guide plate and the second guide plate separate the second cavity into a first channel layer, a second channel layer and a third channel layer distributed from bottom to top along the first direction, and the first channel layer, the second channel layer and the third channel layer are connected end to end in sequence. The first heat exchange tube group includes a plurality of liquid inlet pipes and a plurality of liquid outlet pipes, and the plurality of liquid inlet pipes are all arranged in the first channel layer, and the plurality of liquid outlet pipes are all arranged in the second channel layer. It can be understood that such a configuration is conducive to sufficient heat exchange between the coolant and the refrigerant.

[0013] In one embodiment, a first liquid passage is provided at one end of the first guide plate, the first liquid passage connects the first channel layer and the second channel layer, and a second liquid passage is provided at one end of the second guide plate away from the first liquid passage, the second liquid passage connects the second channel layer and the third channel layer, so that the refrigerant can enter the first channel layer through the refrigerant inlet, enter the second channel layer through the first liquid passage, and then enter the third channel layer through the second liquid passage. It can be understood that such a configuration extends the flow path of the refrigerant, which is conducive to improving the sufficient heat exchange between the brine and the refrigerant.

[0014] The present application also provides an air-conditioning system, which includes the multifunctional evaporator described in any one of the above embodiments.

[0015] Compared with the prior art, in the multifunctional evaporator and air conditioning system provided by the present application, the refrigerant absorbs the heat of the refrigerant and evaporates to form a gaseous refrigerant, and the high-speed refrigerant gas carries part of the liquid droplets to form liquid foam and rises to the defoaming plate. The liquid foam hits the defoaming plate and breaks, and the liquid foam breaks to separate the liquid refrigerant and the gaseous refrigerant. The liquid refrigerant condenses into larger droplets on the surface of the defoaming plate, and the droplets drip into the second cavity under the action of gravity, while the gaseous refrigerant enters the first cavity along the through holes on the defoaming plate, and then is discharged from the exhaust port into the compressor. By setting the defoaming plate, the defoaming plate can separate the gas and liquid of the refrigerant entering the compressor from the exhaust port, thereby greatly alleviating the problem of liquid inhalation in the multifunctional evaporator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A cross-sectional view of a multifunctional evaporator according to an embodiment of the present application;

[0018] Figure 2 A schematic diagram of an exploded view of a defoaming plate according to an embodiment of the present application.

[0019] Reference numerals: 100, cylinder; 110, heat exchange cavity; 111, first cavity; 112, second cavity; 120, refrigerant liquid inlet; 130, exhaust port; 140, first inlet; 150, first outlet; 200, first heat exchange tube group; 210, liquid inlet pipe; 220, liquid outlet pipe; 300, defoaming plate; 310, through hole; 320, plate; 321, filter hole; 330, filter screen; 400, first tube box; 410, coolant liquid inlet cavity; 420, coolant liquid outlet cavity; 430, refrigerant liquid inlet cavity; 440 , the first partition plate; 450, the second partition plate; 500, the second pipe box; 510, the coolant mixing chamber; 520, the refrigerant liquid outlet chamber; 530, the third partition plate; 600, the second heat exchange tube group; 610, the second heat exchange tube; 700, the external pipeline; 710, the throttling device; 800, the guide plate; 810, the first guide plate; 820, the second guide plate; 900, the liquid flow channel layer; 910, the first channel layer; 920, the second channel layer; 930, the third channel layer; 940, the first liquid passage; 950, the second liquid passage. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0021] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0023] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0024] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0025] The shell and tube evaporator consists of two parts: the shell side and the tube side. The refrigerant enters from the bottom of the cylinder and immerses the heat exchanger in the refrigerant from bottom to top. The gaseous refrigerant after heat exchange enters the compressor from the suction port. Since the suction port is close to the refrigerant droplets, the high-speed refrigerant gas can easily entrain the droplets to form liquid foam and rise to the suction port, which will cause serious wet compression problems in the compressor.

[0026] See also Figure 1-Figure 2, in order to solve the problem of liquid inhalation in the shell and tube evaporator and wet compression of the compressor. The present application provides a multifunctional evaporator. Specifically, the multifunctional evaporator includes a cylinder 100, a first heat exchange tube group 200 and a defoaming plate 300. The cylinder 100 is provided with a heat exchange chamber 110, and the defoaming plate 300 is arranged in the heat exchange chamber 110, and the heat exchange chamber 110 is divided into a first cavity 111 and a second cavity 112 distributed along a first direction, the first direction is perpendicular to the axis of the cylinder 100, and the first cavity 111 is relatively located above the second cavity 112 along the first direction. The defoaming plate 300 is provided with a plurality of through holes 310, and the through holes 310 connect the first cavity 111 and the second cavity 112. The first heat exchange tube group 200 is arranged in the second cavity 112, and a refrigerant liquid inlet 120 is provided on the side wall of one end of the cylinder 100 close to the second cavity 112, and an exhaust port 130 is provided on the side wall of one end of the cylinder 100 close to the first cavity 111. The second cavity 112 is connected to the liquid outlet of the condenser through the refrigerant liquid inlet 120, and the first cavity 111 is connected to the suction end of the compressor through the exhaust port 130. The refrigerant flowing out of the condenser is filled into the second cavity 112 through the refrigerant liquid inlet 120 and exchanges heat with the first heat exchange tube group 200. After the heat exchange, the refrigerant evaporates and moves along the first direction, and enters the first cavity 111 through the through hole 310 on the defoaming plate 300, and then is discharged from the exhaust port 130.

[0027] The secondary refrigerant is introduced into the first heat exchange tube group 200, so that the refrigerant is filled into the second cavity 112 through the refrigerant liquid inlet 120 and exchanges heat with the secondary refrigerant in the first heat exchange tube group 200. The refrigerant absorbs the heat of the secondary refrigerant and evaporates to form a gaseous refrigerant, and the gaseous refrigerant carries part of the liquid droplets to form liquid foam and rises to the defoaming plate 300. The liquid foam hits the defoaming plate 300 and breaks, and the liquid foam breaks to separate the liquid refrigerant and the gaseous refrigerant. The liquid refrigerant condenses into larger droplets on the surface of the defoaming plate 300, and the droplets drip into the second cavity 112 under the action of gravity, while the gaseous refrigerant enters the first cavity 111 along the through hole 310 on the defoaming plate 300, and then is discharged from the exhaust port 130 into the compressor.

[0028] That is, the defoaming plate 300 can separate the gas and liquid of the refrigerant entering the compressor from the exhaust port 130, thereby greatly alleviating the problem of liquid inhalation in the multifunctional evaporator.

[0029] In one embodiment, if Figure 2 As shown, the defoaming plate 300 includes a plurality of plate bodies 320 and at least one filter net 330. The plurality of plate bodies 320 are stacked, and the filter net 330 is sandwiched between adjacent plate bodies 320. Each plate body 320 is provided with a filter hole 321, and the filter holes 321 of adjacent plate bodies 320 are connected to form a through hole 310.

[0030] When the larger liquid foam hits the defoaming plate 300, it will break. Some of the large liquid foam will be directly separated into gas and liquid, and the other part of the large liquid foam will be decomposed into small liquid foam. The smaller liquid foam will continue to rise and break when it hits the filter 330. The liquid refrigerant formed after the small liquid foam breaks adheres to the wire of the filter 330 and gathers and condenses into droplets along the wire of the filter 330. The droplets drip into the second cavity 112 under the action of gravity. The gaseous refrigerant formed after the small liquid foam breaks passes through the upper filter 330 and enters the first cavity 111. That is, the filter 330 can further remove the smaller liquid foam, thereby greatly improving the defoaming effect of the defoaming plate 300.

[0031] Furthermore, the filter 330 is sandwiched between adjacent plates 320, which is conducive to firmly fixing the filter 330. By setting multiple layers of plates 320, the filter 330 of each layer of plates 320 can perform defoaming, and the multi-stage defoaming setting is conducive to further improving the defoaming effect of the defoaming plate 300.

[0032] Preferably, in one embodiment, Figure 2 As shown, the defoaming plate 300 includes two plate bodies 320 , and the filter screen is sandwiched between the two plate bodies 320 .

[0033] Furthermore, in one embodiment, the filter screen 330 is formed by weaving at least one wire, and the diameter of the wire is D1, and the diameter of the through hole 310 is D2.

[0034] When part of the liquid foam rises to the filter 330, the liquid foam collides with the silk thread of the filter 330 and adheres to the surface of the silk thread. The liquid foam on the surface of the silk thread further diffuses and the gravity of the liquid foam itself settles, causing the liquid foam to form larger droplets, which flow along the silk thread to its intersection. Due to the wettability of the silk thread, the surface tension of the liquid and the capillary action of the silk thread, the droplets become larger and larger until their own gravity exceeds the combined force of the buoyancy of the rising gas and the surface tension of the liquid. The droplets are separated and fall, and flow into the second cavity 112. Furthermore, by setting The diameter D2 of the through hole 310 is proportional to the diameter D1 of the wire, that is, thicker wires are arranged between the through holes 310 with larger diameters, so as to facilitate the breaking of large-volume liquid foam, while thinner wires are arranged between the through holes 310 with smaller diameters, so as to break up small-volume liquid foam.

[0035] The filter net 330 can be woven from one silk thread, or can also be woven from two, three or four silk threads. The specific number of silk threads can be selected according to actual conditions.

[0036] Preferably, 0.1 mm ≤ D1 ≤ 0.3 mm, 10 mm ≤ D2 ≤ 40 mm. In this way, the thickness of the wire is set reasonably, which can avoid the wire being too thin and easy to break, or the wire being too thick, which makes it difficult to weave a filter 330 with dense meshes.

[0037] Furthermore, the diameter D1 of the wire can be 0.2 mm, 0.22 mm, 0.24 mm, 0.25 mm, 0.27 mm, 0.28 mm, 0.3 mm, etc., and of course the specific value can be set according to actual needs. The diameter D2 of the through hole can be 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, etc., and of course the specific value can be set according to actual needs.

[0038] Furthermore, in one embodiment, the filter screen 330 is a metal wire screen.

[0039] Metal has good ductility, and the filter mesh 330 is formed by weaving metal filaments, which is helpful to reduce the processing difficulty of the filter mesh 330.

[0040] Specifically, the metal mesh can be woven from at least one steel wire. Steel wire is cheap and easy to obtain, and has good corrosion resistance. Weaving the filter mesh 330 from steel wire is beneficial to saving costs and increasing the service life of the filter mesh 330. However, the metal mesh can also be woven from copper wire or aluminum wire.

[0041] In one embodiment, along the first direction from close to the second cavity 112 to close to the first cavity 111 , the aperture of the filter hole 321 tends to decrease.

[0042] After being decomposed by the filter net 330 located at the bottom, some large liquid foams will be decomposed into smaller liquid foams. By setting the aperture of the filter hole 321 to decrease along the direction from close to the second cavity 112 to close to the first cavity 111, the filter holes 321 that decrease step by step from close to the second cavity 112 to close to the first cavity 111 can gradually break up the liquid foams with gradually decreasing volumes. Thereby, the defoaming effect of the multifunctional evaporator is improved. In addition, by setting the aperture of the filter hole 321 to decrease along the direction from close to the second cavity 112 to close to the first cavity 111, it is convenient for the condensed refrigerant droplets to drip into the second cavity 112 along the larger filter hole 321 below.

[0043] In one embodiment, if Figure 1As shown, the multifunctional evaporator further includes a second heat exchange tube group 600, which is disposed in the first cavity 111 and is located above the defoaming plate 300 along the first direction, so that at least part of the refrigerant in the first cavity 111 is discharged from the exhaust port 130 after heat exchange with the second heat exchange tube group 600. The first inlet 140 and the first outlet 150 are respectively provided at both ends of the cylinder 100, one end of the second heat exchange tube group 600 is connected to the liquid outlet of the condenser through the first inlet 140, and the other end of the second heat exchange tube group 600 is connected to the refrigerant liquid inlet 120 through the first outlet 150.

[0044] The high-pressure liquid refrigerant flowing out of the condenser enters the second heat exchange tube group 600 through the first inlet 140, and the refrigerant after defoaming by the defoaming plate 300 exchanges heat with the high-pressure liquid refrigerant in the second heat exchange tube group 600 after entering the first cavity 111. The temperature of the liquid refrigerant in the second heat exchange tube group 600 after heat exchange is reduced, that is, the degree of supercooling is increased, which is conducive to the liquid refrigerant entering the second cavity 112 and the relatively high temperature of the refrigerant in the first heat exchange tube group 200 to fully evaporate the liquid refrigerant in the second cavity 112. The temperature of the gaseous refrigerant in the first cavity 111 after heat exchange increases, and the degree of superheat is increased. That is, the suction temperature of the compressor is higher than the evaporation temperature of the refrigerant, which is conducive to ensuring that the refrigerant entering the compressor does not carry droplets.

[0045] A small amount of gas-liquid mixed refrigerant not separated by the defoamer plate 300 undergoes heat exchange with the high-pressure liquid refrigerant in the second heat exchange tube group 600 and becomes gaseous refrigerant, which is beneficial to further avoid liquid inhalation in the multifunctional evaporator.

[0046] Furthermore, the second heat exchange tube group 600 is disposed in the first cavity 111, so that the first cavity 111 acts as a shell-side structure for heat exchange with the second heat exchange tube group 600, without the need to set up a shell-side structure outside the multifunctional evaporator, thereby greatly simplifying the structure of the multifunctional evaporator.

[0047] Further, in one embodiment, if Figure 1 As shown, the multifunctional evaporator further includes an external pipe 700 , one end of which is connected to the second heat exchange tube group 600 , and the other end of which is connected to the refrigerant liquid inlet 120 , so that the refrigerant enters the refrigerant liquid inlet 120 through the external pipe 700 .

[0048] Furthermore, in one embodiment, if Figure 1 As shown, the multifunctional evaporator also includes a throttling device 710, which is arranged at the connection between the external pipe 700 and the refrigerant inlet 120. After the refrigerant is throttled and depressurized by the throttling device 710, it enters the second cavity 112 through the refrigerant inlet 120.

[0049] In one embodiment, if Figure 1 As shown, the multifunctional evaporator further includes a plurality of guide plates 800. The plurality of guide plates 800 are all disposed in the second cavity 112, and divide the second cavity 112 into a plurality of liquid flow channel layers 900 distributed along the first direction, and the adjacent liquid flow channel layers 900 are sequentially connected. The first heat exchange tube group 200 is disposed in the liquid flow channel layer 900, and the flow direction of the brine in the second heat exchange tube group 600 is opposite to the flow direction of the refrigerant in the liquid flow channel layer 900.

[0050] The refrigerant is charged into the lower liquid flow channel layer 900 through the refrigerant liquid inlet 120, and then enters the adjacent upper liquid flow channel layer 900. That is, the guide plate 800 enhances the turbulence effect on the refrigerant in the second cavity 112, thereby facilitating heat exchange between the refrigerant and the coolant in the second heat exchange tube group 600.

[0051] Furthermore, the flow direction of the coolant in the second heat exchange tube group 600 is opposite to the flow direction of the refrigerant in the liquid flow channel layer 900. Through countercurrent heat exchange, the heat transfer coefficient is improved, which is beneficial to sufficient heat exchange between the refrigerant and the coolant in the second heat exchange tube group 600.

[0052] Preferably, in one embodiment, Figure 1 As shown, there are two guide plates 800, and the two guide plates 800 are defined as a first guide plate 810 and a second guide plate 820. The first guide plate 810 and the second guide plate 820 separate the second cavity 112 into a first channel layer 910, a second channel layer 920 and a third channel layer 930 distributed from bottom to top along the first direction, and the first channel layer 910, the second channel layer 920 and the third channel layer 930 are connected end to end in sequence. The first heat exchange tube group 200 includes a plurality of liquid inlet pipes 210 and a plurality of liquid outlet pipes 220, and the plurality of liquid inlet pipes 210 are all arranged in the first channel layer 910, and the plurality of liquid outlet pipes 220 are all arranged in the second channel layer 920.

[0053] By arranging the plurality of liquid inlet pipes 210 in the first channel layer 910 and the plurality of liquid outlet pipes 220 in the second channel layer 920, the flow path of the brine in the first heat exchange tube group 200 is extended, thereby facilitating sufficient heat exchange between the brine and the refrigerant, so that the refrigerant is fully evaporated in the second cavity 112. In addition, the internal structure of the multifunctional evaporator is simplified in this way.

[0054] However, the present invention is not limited thereto. In another embodiment, the plurality of liquid inlet pipes 210 may be disposed in the second channel layer 920 , and the plurality of liquid outlet pipes 220 may be disposed in the first channel layer 910 .

[0055] In one embodiment, if Figure 1As shown, a first liquid passage 940 is provided at one end of the first guide plate 810, and the first liquid passage 940 connects the first channel layer 910 and the second channel layer 920. A second liquid passage 950 is provided at one end of the second guide plate 820 away from the first liquid passage 940, and the second liquid passage 950 connects the second channel layer 920 and the third channel layer 930. The refrigerant can enter the first channel layer 910 through the refrigerant inlet 120, enter the second channel layer 920 through the first liquid passage 940, and then enter the third channel layer 930 through the second liquid passage 950.

[0056] The first liquid passage 940 , the second channel layer 920 and the third channel layer 930 are connected end to end to form a serpentine refrigerant channel, which extends the flow path of the refrigerant, thereby facilitating sufficient heat exchange between the coolant and the refrigerant, so that the refrigerant evaporates fully in the second cavity 112 .

[0057] Specifically, one end of the first guide plate 810 is fixedly connected to the cylinder 100, and the other end is spaced apart from the side edge of the other end corresponding to the cylinder 100 to form a first liquid passage 940. Similarly, one end of the second guide plate 820 is connected to the cylinder 100, and the other end is spaced apart from the side edge of the other end corresponding to the cylinder 100 to form a second liquid passage 950.

[0058] In this way, the difficulty of disposing the first liquid passage 940 and the second liquid passage 950 is reduced.

[0059] In one embodiment, if Figure 1 As shown, the multifunctional evaporator further includes a first pipe box 400 , a second pipe box 500 , a first partition plate 440 , a second partition plate 450 and a third partition plate 530 .

[0060] The first pipe box 400 and the second pipe box 500 are respectively fixedly installed at both ends of the cylinder 100, and the first partition plate 440 and the second partition plate 450 are both arranged in the first pipe box 400, and divide the first pipe box 400 into a brine inlet chamber 410, a brine outlet chamber 420 and a refrigerant inlet chamber 430. The third partition plate 530 is arranged in the second pipe box 500, and divides the second pipe box 500 into a brine mixing chamber 510 and a refrigerant outlet chamber 520.

[0061] The brine inlet chamber 410 is connected to the liquid inlet end of the liquid inlet pipe 210, the brine mixing chamber 510 is connected to the liquid outlet end of the liquid inlet pipe 210 and the liquid inlet end of the liquid outlet pipe 220, the brine outlet chamber 420 is connected to the liquid outlet end of the liquid outlet pipe 220, and the brine flows through the brine inlet chamber 410, the liquid inlet pipe 210, the brine mixing chamber 510, the liquid outlet pipe 220 and the brine outlet chamber 420 in sequence. The first inlet 140 is provided on the side wall of the first pipe box 400, and the first outlet 150 is provided on the side wall of the second pipe box 500. The second heat exchange tube group 600 includes a plurality of second heat exchange tubes 610 arranged in parallel, one end of the second heat exchange tube 610 is inserted into the first inlet 140, and the other end of the second heat exchange tube 610 is inserted into the first outlet 150. The refrigerant liquid inlet cavity 430 is connected to the liquid inlet end of the second heat exchange tube group 600 through the first inlet 140, and the refrigerant liquid outlet cavity 520 is connected to the liquid outlet end of the second heat exchange tube group 600 through the first outlet 150. Compared with connecting multiple liquid inlet pipes 210 and multiple liquid outlet pipes 220 through multiple independent connecting pipes, the first pipe box 400 and the second pipe box 500 are provided, which is conducive to simplifying the structure of the cylinder 100.

[0062] The present application also provides an air-conditioning system, which includes the multifunctional evaporator described in any one of the above embodiments.

[0063] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A multifunctional evaporator, characterized in that: The invention comprises a cylinder (100), a first heat exchange tube group (200) and a defoaming plate (300), wherein the cylinder (100) is provided with a heat exchange cavity (110), and the defoaming plate (300) is arranged in the heat exchange cavity (110) and divides the heat exchange cavity (110) into a first cavity (111) and a second cavity (112) distributed along a first direction, wherein the first direction is perpendicular to the axis of the cylinder (100), and the first cavity (111) is relatively located above the second cavity (112) along the first direction; and the defoaming plate (300) is provided with a plurality of through holes (310), and the through holes (310) are connected with the first cavity (111) and the second cavity (112); The first heat exchange tube group (200) is arranged in the second cavity (112); a refrigerant liquid inlet (120) is provided on a side wall of one end of the cylinder (100) close to the second cavity (112); an exhaust port (130) is provided on a side wall of one end of the cylinder (100) close to the first cavity (111); the second cavity (112) is connected to a liquid outlet of a condenser through the refrigerant liquid inlet (120); and the first cavity (111) is connected to a suction end of a compressor through the exhaust port (130); The refrigerant flowing out of the condenser is charged into the second cavity (112) through the refrigerant liquid inlet (120) and exchanges heat with the first heat exchange tube group (200). After the heat exchange, the refrigerant evaporates and moves along the first direction, passes through the through hole (310) on the defoaming plate (300), enters the first cavity (111), and is then discharged from the exhaust port (130).

2. The multifunctional evaporator according to claim 1, characterized in that: The defoaming plate (300) comprises a plurality of plate bodies (320) and at least one filter net (330); the plurality of plate bodies (320) are stacked, the filter net (330) is sandwiched between adjacent plate bodies (320), each of the plate bodies (320) is respectively provided with a filter hole (321), and the filter holes (321) of adjacent plate bodies (320) are connected to form the through hole (310).

3. The multifunctional evaporator according to claim 2, characterized in that: The filter screen (330) is a metal wire screen.

4. The multifunctional evaporator according to claim 2, characterized in that: The filter screen (330) is formed by weaving at least one wire, and the diameter of the wire is D1, and the diameter of the through hole (310) is D2, and D1 and D2 satisfy:

5. The multifunctional evaporator according to claim 4, characterized in that: 0.1mm≤D1≤0.3mm, 10mm≤D2≤40mm.

6. The multifunctional evaporator according to claim 2, characterized in that: Along the first direction from close to the second cavity (112) to close to the first cavity (111), the aperture of the filter hole (321) tends to decrease.

7. The multifunctional evaporator according to claim 1, characterized in that: The multifunctional evaporator further comprises a second heat exchange tube group (600), wherein the second heat exchange tube group (600) is arranged in the first cavity (111) and is located above the defoaming plate (300) along the first direction, so that at least part of the refrigerant in the first cavity (111) is discharged from the exhaust port (130) after heat exchange with the second heat exchange tube group (600); The two ends of the cylinder (100) are respectively provided with a first inlet (140) and a first outlet (150); one end of the second heat exchange tube group (600) is connected to the liquid outlet of the condenser through the first inlet (140); and the other end of the second heat exchange tube group (600) is connected to the refrigerant liquid inlet (120) through the first outlet (150).

8. The multifunctional evaporator according to claim 7, characterized in that: The multifunctional evaporator further comprises a plurality of guide plates (800), wherein the plurality of guide plates (800) are arranged in the second cavity (112) and divide the second cavity (112) into a plurality of liquid flow channel layers (900) distributed along the first direction, and adjacent liquid flow channel layers (900) are connected in sequence. The first heat exchange tube group (200) is arranged in the liquid flow channel layer (900), and the flow direction of the coolant in the second heat exchange tube group (600) is opposite to the flow direction of the refrigerant in the liquid flow channel layer (900).

9. The multifunctional evaporator according to claim 8, characterized in that: The number of the guide plates (800) is two, and the two guide plates (800) are defined as a first guide plate (810) and a second guide plate (820), respectively; the first guide plate (810) and the second guide plate (820) separate the second cavity (112) into a first channel layer (910), a second channel layer (920), and a third channel layer (930) distributed from bottom to top along the first direction; the first channel layer (910), the second channel layer (920), and the third channel layer (930) are connected end to end in sequence; The first heat exchange tube group (200) comprises a plurality of liquid inlet pipes (210) and a plurality of liquid outlet pipes (220); the plurality of liquid inlet pipes (210) are all arranged in the first channel layer (910), and the plurality of liquid outlet pipes (220) are all arranged in the second channel layer (920).

10. The multifunctional evaporator according to claim 9, characterized in that: A first liquid passage (940) is provided at one end of the first guide plate, and the first liquid passage (940) connects the first channel layer (910) and the second channel layer (920). A second liquid passage (950) is provided at one end of the second guide plate (820) away from the first liquid passage (940), and the second liquid passage (950) is connected to the second channel layer (920) and the third channel layer (930). The refrigerant can enter the first channel layer (910) through the refrigerant liquid inlet (120), enter the second channel layer (920) through the first liquid passage (940), and then enter the third channel layer (930) through the second liquid passage (950).

11. An air conditioning system, characterized in that: It comprises the multifunctional evaporator as described in any one of claims 1 to 10.

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