Plate heat exchanger with liquid storage function

Abstract

The utility model provides a plate heat exchanger with a liquid storage function, which comprises an inlet and outlet side edge plate, a first part main heat exchange area, a second part refrigerant liquid storage area, a third part supercooling heat exchange area and a bottom side edge plate which are sequentially arranged, a refrigerant inlet pressing plate, a refrigerant flow channel of the first part main heat exchange area, a refrigerant flow channel of the second part refrigerant liquid storage area, a refrigerant flow channel of the third part supercooling heat exchange area and a refrigerant outlet pressing plate are communicated in sequence; the plate heat exchanger comprises a vertical plate heat exchanger or a horizontal plate heat exchanger; a lifting device is arranged in the vertical liquid storage structure frame, and drying devices are arranged in the vertical liquid storage structure frame and the horizontal liquid storage structure frame. The liquid storage structure frame is arranged in the plate heat exchanger, an external liquid storage structure does not need to be additionally arranged, connection through an external pipeline is avoided, and installation sealing interfaces are reduced; the volume of a product can be reduced, and the leakage risk of an internal refrigerant medium is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger technical field, specifically, relate to a kind of plate heat exchanger with liquid storage function. BACKGROUND

[0002] The energy source of new energy vehicles, especially electric vehicles, is the battery system. The energy of the battery is not only used to overcome the rolling resistance generated by the tires when the vehicle is running, but also to consider the air resistance generated by the vehicle body and the air, as well as the thermal management of the passenger cabin climate regulation and electronic components. If the energy consumption of the climate regulation of the passenger cabin and the thermal management of the electronic components is too high, it will affect the range of the vehicle. In order to better utilize the energy of the battery, coupling the energy of different circulation systems is a feasible technical solution. For example, the energy exchange between the cooling liquid system and the refrigerant system can reduce the temperature of the cooling liquid to the required temperature, and cool the battery, or introduce the cooling liquid into the air conditioning system of the vehicle to cool the passenger cabin. Or through the heat pump system of the refrigeration cycle, the energy is absorbed from the cooling liquid system, and the waste heat of the electronic components is fully utilized to indirectly reduce the energy consumption of the battery. In order to realize the energy exchange of these different systems, the application of plate heat exchanger products is indispensable.

[0003] The research and development and application of new alternative refrigerant heat pump air conditioning systems have been put on the agenda. Some environmentally friendly refrigerants such as R290 need to be strictly controlled due to their flammable and explosive characteristics. The indirect heat exchange system using plate heat exchanger combined with integrated module structure can make the structure of refrigerant system more compact, effectively control the internal volume of the system, and thus control the charge amount.

[0004] Current plate heat exchanger products, including integrated modular products, generally use separate liquid storage structures. The liquid storage structure is connected to the system or other parts of the integrated module through the inlet and outlet, and generally requires a separate mounting interface and sealing interface. For example, in patent CN 215705552 U, there is a separate liquid storage module. In patent CN 217347413 U, there is a separate liquid storage tank. In patent CN 220785393 U, there is a separate liquid storage tank. In patent CN 221437678 U, a liquid storage dryer is brazed together with the plate heat exchanger.

[0005] The independent structure of the liquid storage device needs to be assembled and sealed with other parts of the system structure, and these mounting and sealing interfaces all have the risk of leakage. Some designs use pipes to connect the inlet and outlet of the liquid storage device to other parts of the system. These pipes increase the resistance of the refrigerant in the system, which negatively affects the energy efficiency of the system under different operating conditions.

[0006] Therefore, there is a need to provide a plate heat exchanger with a liquid storage function for the plate heat exchanger product in the heat pump air conditioning system of a new energy vehicle, without the need for additional arrangement of an external liquid storage structure, avoiding connection through an external pipeline, reducing the installation sealing interface; on the one hand, the volume of the product can be reduced, and on the other hand, the risk of internal refrigerant medium leakage can be reduced. Content of the utility model

[0007] In view of the defects in the prior art, the utility model aims to provide a plate heat exchanger with a liquid storage function.

[0008] According to the plate heat exchanger with a liquid storage function, the inlet and outlet side plate, the first part main heat exchange area, the second part refrigerant liquid storage area, the third part supercooling heat exchange area and the bottom side plate are sequentially arranged, the refrigerant inlet pressing plate, the cooling liquid outlet pipe, the refrigerant outlet pressing plate and the cooling liquid inlet pipe are arranged on the inlet and outlet side plate, and the refrigerant inlet pressing plate, the refrigerant flow channel of the first part main heat exchange area, the refrigerant flow channel of the second part refrigerant liquid storage area, the refrigerant flow channel of the third part supercooling heat exchange area and the refrigerant outlet pressing plate are sequentially communicated.

[0009] The plate heat exchanger comprises a vertical plate heat exchanger or a horizontal plate heat exchanger.

[0010] The second part refrigerant liquid storage area of the vertical plate heat exchanger comprises a vertical liquid storage structure frame, and the inlet and outlet of the refrigerant flow channel in the vertical liquid storage structure frame are located at the lower left and upper right of the vertical liquid storage structure frame respectively.

[0011] The second part refrigerant liquid storage area of the horizontal plate heat exchanger comprises a horizontal liquid storage structure frame, and the inlet and outlet of the refrigerant flow channel in the horizontal liquid storage structure frame are located at the upper left and lower right of the horizontal liquid storage structure frame respectively.

[0012] The vertical liquid storage structure frame is internally provided with a lifting device, and the vertical liquid storage structure frame and the horizontal liquid storage structure frame are both internally provided with a drying device.

[0013] Preferably, a first opening is formed in the refrigerant inlet pressing plate, and the opening is in communication with the refrigerant flow channel in the first part main heat exchange area.

[0014] A second opening is formed in the refrigerant outlet pressing plate, an inner jump pipe is assembled on the inner wall of the second opening, and the inner jump pipe is in communication with the refrigerant flow channels in the first part main heat exchange area, the second part refrigerant liquid storage area and the third part supercooling heat exchange area.

[0015] Preferably, a sheet is arranged on the connecting interface between the second partial refrigerant storage area and the third partial supercooling heat exchange area, a flange opening is formed on the sheet, and the flange opening and the outer wall surface of the inner jump pipe form a sealed contact surface.

[0016] Preferably, the lifting device of the vertical storage structure frame comprises an inner filter screen assembly, a cutoff structure and a straw insertion slot arranged in sequence from top to bottom, a straw is inserted into the straw insertion slot, the other end of the straw extends to the bottom of the vertical storage structure frame, and a double-layer lip structure and a filter screen are arranged on the filter screen assembly.

[0017] Preferably, an opening is arranged at the top end of the vertical storage structure frame, the plastic cover is detachably mounted on the opening, and a sealing ring is arranged on the outer edge of the connecting position of the opening and the plastic cover.

[0018] Preferably, the drying device of the vertical storage structure frame comprises a drying bag, and a hook structure for suspending the drying bag is arranged on the outer side of the straw insertion slot.

[0019] Preferably, the drying device of the horizontal storage structure frame comprises a drying bag, a frame structure for mounting the drying bag is arranged in the horizontal storage structure frame, and the frame structure is arranged at the top of the horizontal storage structure frame.

[0020] Preferably, an opening structure is arranged at the bottom of the horizontal storage structure frame, and the opening structure is in communication with the refrigerant flow channel in the third partial supercooling heat exchange area.

[0021] Preferably, an opening is arranged on one side of the horizontal storage structure frame close to the opening structure, the plastic cover is detachably mounted on the opening, and a sealing ring is arranged on the outer edge of the connecting position of the opening and the plastic cover.

[0022] Preferably, a snap spring groove is arranged on the inner side of the plastic cover, a snap spring is mounted in the snap spring groove, a plug cover is mounted on one side of the snap spring, an O-ring is arranged on the plug cover, and sealing surfaces are formed on both sides of the snap spring groove.

[0023] Compared with the prior art, the utility model has the beneficial effects that:

[0024] 1、The utility model discloses a storage structure frame is arranged in the plate heat exchanger, does not need to arrange the liquid storage structure of outside, avoids connecting through the external pipeline, reduces the installation sealing interface, can reduce the volume of product on one hand, reduces the risk of internal refrigerant medium leakage on the other hand, and the drying device is arranged in the liquid storage structure frame and can absorb the moisture in the refrigerant medium, avoids the failure mode such as ice blockage in the refrigeration system, and guarantees the stable operation of the system.

[0025] 2. The utility model discloses a refrigerant outlet pressure plate and third part supercooling heat exchange area are connected through the inner jump pipe, and the sealing interface is formed on the sheet and the flanging, ensure that refrigerant can flow out the plate heat exchanger through the inner jump pipe through the outlet pressure plate, avoid the internal string flow phenomenon in the heat exchanger.

[0026] 3. The utility model discloses a filter screen structure can be set, can filter refrigerant medium, block the impurity in the system, prevent its flow into refrigerant system other parts, avoid the influence system electron valve piece normal work.

[0027] 4. The utility model discloses a lifting device is arranged in the vertical liquid storage structure frame, can guarantee the liquid medium in the bottom of second part refrigerant liquid storage area transmission to third part supercooling heat exchange area, avoid gaseous refrigerant to enter third part supercooling heat exchange area, and then guarantee the stability of system operation. BRIEF DESCRIPTION OF DRAWINGS

[0028] Other features, objects and advantages of the utility model will become more apparent through reading the detailed description of the non-restrictive embodiments with reference to the following drawings:

[0029] Figure 1 It is the structure schematic drawing of vertical plate heat exchanger that the utility model discloses mainly embodies;

[0030] Figure 2 It is the explosion drawing of vertical plate heat exchanger that the utility model discloses mainly embodies;

[0031] Figure 3 It is the explosion drawing of vertical liquid storage structure frame that the utility model discloses mainly embodies;

[0032] Figure 4 It is the side view of vertical plate heat exchanger that the utility model discloses mainly embodies;

[0033] Figure 5 It is the section view of A-A that the utility model discloses mainly embodies; Figure 4

[0034] Figure 6 It is the refrigerant flow circulation schematic drawing of vertical plate heat exchanger that the utility model discloses mainly embodies;

[0035] Figure 7 It is the structure schematic drawing of horizontal plate heat exchanger that the utility model discloses mainly embodies;

[0036] Figure 8 It is the explosion drawing of horizontal plate heat exchanger that the utility model discloses mainly embodies;

[0037] Figure 9 It is the plan view of horizontal plate heat exchanger that the utility model discloses mainly embodies; ​

[0038] Figure 10 The utility model mainly embodies Figure 9 The sectional view of B-B.

[0039] The figure mark: vertical plate heat exchanger 100, horizontal plate heat exchanger 200, refrigerant import pressure plate 101, refrigerant export pressure plate 102, cooling liquid import pipe 103, cooling liquid export pipe 104, plastic cover 105, import export side edge board 106, bottom side edge board 107, inner jump pipe 108, sheet 109, vertical liquid storage structure frame 110, first part main heat exchange area 121, second part refrigerant liquid storage area 122, third part supercooling heat exchange area 123, first opening 1011, second opening 1021, clasp spring groove 1131, opening 1050, sealing ring 1051, clasp spring 1052, plug cover 1053, O ring 1054, filter screen assembly 1055, filter screen 1056, double layer lip edge structure 1057, suction pipe insertion slot 1058, suction pipe 1059, flanging opening 1091, stop structure 1101, first sealing surface 1121, second sealing surface 1144, hook structure 10510, dry package 10511, horizontal liquid storage structure frame 210, filter screen 2012, frame structure 2055, opening structure 2102, O ring sealing surface 2121. DETAILED DESCRIPTION

[0040] The utility model will be explained in detail below in combination with specific embodiment. The following embodiment will help the person skilled in the art further understand the utility model, but does not limit the utility model in any form. It should be pointed out that, for ordinary skilled person in the art, on the premise of not departing from the utility model concept, can also make a number of changes and improvements. These all belong to the protection scope of the utility model.

[0041] As Figures 1-10As shown, according to the plate heat exchanger with liquid storage function, the plate heat exchanger comprises inlet and outlet side plates 106, a first part of main heat exchange area 121, a second part of refrigerant liquid storage area 122, a third part of supercooling heat exchange area 123 and a bottom side plate 107 which are sequentially arranged, the inlet and outlet side plates 106 are provided with a refrigerant inlet pressing plate 101, a cooling liquid outlet pipe 104, a refrigerant outlet pressing plate 102 and a cooling liquid inlet pipe 103, the refrigerant inlet pressing plate 101, the refrigerant flow channel of the first part of main heat exchange area 121, the refrigerant flow channel of the second part of refrigerant liquid storage area 122, the refrigerant flow channel of the third part of supercooling heat exchange area 123 and the refrigerant outlet pressing plate 102 are sequentially communicated. The plate heat exchanger comprises a vertical plate heat exchanger 100 or a horizontal plate heat exchanger 200. The second part of refrigerant liquid storage area 122 of the vertical plate heat exchanger 100 comprises a vertical liquid storage structure frame 110, the inlet and outlet of the refrigerant flow channel in the vertical liquid storage structure frame 110 are located at the lower left and upper right of the vertical liquid storage structure frame 110 respectively; the second part of refrigerant liquid storage area 122 of the horizontal plate heat exchanger 200 comprises a horizontal liquid storage structure frame 210, the inlet and outlet of the refrigerant flow channel in the horizontal liquid storage structure frame 210 are located at the upper left and lower right of the horizontal liquid storage structure frame 210 respectively; the vertical liquid storage structure frame 110 is internally provided with a lifting device, and the vertical liquid storage structure frame 110 and the horizontal liquid storage structure frame 210 are internally provided with drying devices.

[0042] The plate heat exchanger generally has two modes of horizontal arrangement and vertical arrangement on the whole vehicle. Here, the horizontal arrangement particularly refers to the direction of medium flow in the plate heat exchanger being parallel to the horizontal plane when the whole vehicle is at rest in the horizontal plane position. Here, the vertical arrangement particularly refers to the direction of medium flow in the plate heat exchanger being perpendicular to the horizontal plane when the whole vehicle is at rest in the horizontal plane position.

[0043] The refrigerant inlet pressing plate 101 is provided with a first opening 1011, and the opening 1011 is in communication with the refrigerant flow channel in the first part of main heat exchange area 121; the refrigerant outlet pressing plate 102 is provided with a second opening 1021, and an inner jump pipe 108 is assembled on the inner wall of the second opening 1021, and the inner jump pipe 108 is in communication with the refrigerant flow channels in the first part of main heat exchange area 121, the second part of refrigerant liquid storage area 122 and the third part of supercooling heat exchange area 123.

[0044] The connecting interface between the second refrigerant storage area 122 and the third supercooling heat exchange area 123 is provided with a plate 109, the plate 109 is provided with a flange opening 1091, the flange opening 1091 cooperates with the outer wall of the inner jump pipe 108 to form a sealed contact surface. The inner jump pipe 108 connects the refrigerant outlet pressing plate 102 and the third supercooling heat exchange area 123, and forms a sealed interface with the flange 1091 on the plate 109, so as to ensure that the refrigerant can flow out of the plate heat exchanger through the inner jump pipe 108 and the outlet pressing plate 102, and avoid internal cross flow in the heat exchanger.

[0045] The top end of the vertical liquid storage structure frame 110 is provided with an opening 1050, a plastic cover 105 with dustproof and waterproof functions is detachably installed on the opening 1050, and a sealing ring 1051 is arranged on the outer edge of the connecting position of the opening 1050 and the plastic cover 105.

[0046] The inner side of the plastic cover 105 is provided with a snap spring groove 1131, a snap spring 1052 is installed in the snap spring groove 1131, a plug cover 1053 is installed on one side of the snap spring 1052, an O-ring 1054 is assembled on the plug cover 1053, and a first sealing surface 1121 and a second sealing surface 1144 are formed on both sides of the snap spring groove 1131 in cooperation with the vertical liquid storage structure frame 110.

[0047] The lifting device of the vertical liquid storage structure frame 110 includes a filter screen assembly 1055, a cutoff structure 1101 and a straw insertion slot 1058 arranged in sequence from top to bottom, the filter screen assembly 1055 is detachably installed below the plug cover 1053, the installation position of the filter screen assembly 1055 is limited by the cutoff structure 1101 and the plug cover 1053, and the filter screen assembly 1055 is provided with a double-layer lip structure 1057 and a filter screen 1056. A vertical straw 1059 is inserted into the straw insertion slot 1058, the other end of the straw 1059 extends to the bottom of the vertical liquid storage structure frame 110, and the straw 1059 is used to suck the refrigerant and the refrigerant and lubricating oil mixture at the bottom of the vertical liquid storage structure frame 110, so that the mixture enters the third supercooling heat exchange area 123 after being filtered by the filter screen 1056. The condenser in the application is in a refrigeration cycle system, the compressor in the system provides power to drive the refrigerant to flow in the system. In order to ensure the stable operation of the system and the normal work of the compressor, it is necessary to ensure that the liquid refrigerant / lubricating oil mixture flows out of the condenser. The double-layer lip structure 1057 on the filter screen assembly 1055 plays a sealing role, so as to ensure that the refrigerant can only pass through the straw 1059, enter the filter screen 1056 position above, and then enter the third supercooling heat exchange area 123.

[0048] The drying device of the vertical liquid storage structure frame 110 includes a drying bag 10511, and a hook structure 10510 for hanging the drying bag 10511 is arranged on the outer side of the suction pipe slot 1058, and the hook structure 10510 is arranged on the inner side of the stop structure 1101.

[0049] By assembling the filter screen assembly 1055 inside the vertical liquid storage structure frame 110, the refrigerant medium can be filtered, impurities in the system can be blocked, and the impurities can be prevented from flowing into other parts of the refrigerant system, so that the normal work of the electronic valve in the system is avoided.

[0050] The refrigerant flow path of the vertical plate heat exchanger 100 is as follows: the refrigerant enters the upper inlet manifold hole of the first part of the main heat exchange area 121 from the refrigerant inlet pressing plate 101; the refrigerant flows into the heat exchange channel composed of corrugated plates from the inlet manifold hole; the refrigerant enters the lower manifold hole of the first part of the main heat exchange area 121; the refrigerant is stored in the second part of the refrigerant storage area 122 from the lower manifold hole; the refrigerant is lifted to the upper area of the vertical liquid storage structure frame 110 through the suction pipe 1059; the refrigerant passes through the filter screen assembly 1055; the refrigerant enters the third part of the supercooling heat exchange area 123; the refrigerant enters the refrigerant outlet pressing plate 102 through the inner jump pipe 108, and then flows out of the vertical plate heat exchanger 100.

[0051] The first opening 1011 on the refrigerant inlet pressing plate 101 of the horizontal liquid storage structure frame 210 is assembled with a detachable filter screen 2012, which can filter the refrigerant medium, block impurities in the system, and prevent the impurities from flowing into other parts of the refrigerant system, so as to avoid affecting the normal work of the electronic valve in the system. The filter screen 2012 has a lip structure, which can be interference-fitted with the inner wall of the first opening 1011 of the refrigerant inlet pressing plate 101, and the installation insertion direction of the filter screen 2012 is consistent with the refrigerant flow direction.

[0052] The drying device of the horizontal liquid storage structure frame 210 includes a drying bag 10511, and a frame structure 2055 for installing the drying bag 10511 is arranged inside the horizontal liquid storage structure frame 210, and the frame structure 2055 is arranged at the top of the horizontal liquid storage structure frame 210.

[0053] The bottom of the horizontal liquid storage structure frame 210 is provided with an opening structure 2102, and the opening structure 2102 is in communication with the refrigerant flow channel in the third part of the supercooling heat exchange area 123.

[0054] The horizontal liquid storage structure frame 210 is provided with an opening 1050 near one side of the opening structure 2102, and a plastic cover 105 with dustproof and waterproof functions is detachably installed on the opening 1050. The outer edge of the connection position of the opening 1050 and the plastic cover 105 is provided with a sealing ring 1051. The inner side of the plastic cover 105 is provided with a snap spring groove 1131, and a snap spring 1052 is installed in the snap spring groove 1131. One side of the snap spring 1052 is provided with a plug cover 1053, and an O-shaped ring 1054 is assembled on the plug cover 1053 to form an O-shaped ring sealing surface 2121 in cooperation with the horizontal liquid storage structure frame 210. The horizontal liquid storage structure frame 210 is provided with a stop structure 1101 inside the O-shaped ring sealing surface 2121, and the installation position of the plug cover 1053 is limited by the snap spring 1052 and the stop structure 1101.

[0055] The refrigerant flow path of the horizontal plate heat exchanger 200 is as follows: the refrigerant enters the right side inlet manifold hole of the first part main heat exchange area 121 from the refrigerant inlet pressing plate 101; the refrigerant flows into the heat exchange channel composed of corrugated sheets from the inlet manifold hole; the refrigerant enters the left side manifold hole of the first part main heat exchange area 121; the refrigerant enters the second part refrigerant storage area 122 from the left side manifold hole, can be stored in the second part refrigerant storage area 122, and can flow into the inlet manifold hole of the third part supercooling heat exchange area 123; the refrigerant enters the refrigerant outlet pressing plate 102 through the inner jump pipe 108 and then flows out of the horizontal plate heat exchanger 200.

[0056] In addition to the detachable parts in the liquid storage structure frame, the rest of the parts can be integrally formed by brazing process. That is, the inlet and outlet side edge plate 106, the first part main heat exchange area 121, the liquid storage structure frame of the second part refrigerant storage area 122, the third part supercooling heat exchange area 123, and the bottom side edge plate 107 are made of aluminum alloy and can be assembled and formed; after assembly and formation, they can be integrally welded by brazing process. The parts in the liquid storage frame structure are assembled into the plate heat exchanger in the form of assembly after the brazing process of the plate heat exchanger is completed, forming a complete functional product.

[0057] The present application sets the liquid storage structure frame inside the plate heat exchanger, does not need to additionally arrange external liquid storage structure, avoids connection through external pipeline, reduces the installation sealing interface; on the one hand, the volume of the product can be reduced, and on the other hand, the risk of internal refrigerant medium leakage can be reduced. The drying device in the liquid storage structure frame can absorb the moisture in the refrigerant medium, avoid the failure mode of ice blockage in the refrigeration system, and ensure the stable operation of the system.

[0058] In the description of the present application, it needs to be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0059] The specific embodiments of the present application are described above. It needs to be understood that the present application is not limited to the specific embodiments described above, and various changes or modifications can be made by those skilled in the art within the scope of the claims, which does not affect the essential content of the present application. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A plate heat exchanger with liquid storage function, characterized in that, The plate heat exchanger comprises, in sequence, an inlet and outlet side plate (106), a first main heat exchange section (121), a second refrigerant storage section (122), a third supercooling heat exchange section (123), and a bottom side plate (107), wherein the inlet and outlet side plate (106) is provided with a refrigerant inlet pressing plate (101), a cooling liquid outlet pipe (104), a refrigerant outlet pressing plate (102), and a cooling liquid inlet pipe (103), and the refrigerant inlet pressing plate (101), the refrigerant flow channel of the first main heat exchange section (121), the refrigerant flow channel of the second refrigerant storage section (122), the refrigerant flow channel of the third supercooling heat exchange section (123), and the refrigerant outlet pressing plate (102) are sequentially communicated; The plate heat exchanger comprises a vertical plate heat exchanger (100) or a horizontal plate heat exchanger (200); The second refrigerant storage section (122) of the vertical plate heat exchanger (100) comprises a vertical storage structure frame (110), and the inlet and outlet of the refrigerant flow channel inside the vertical storage structure frame (110) are located at the lower left and upper right of the vertical storage structure frame (110), respectively; The second refrigerant storage section (122) of the horizontal plate heat exchanger (200) comprises a horizontal storage structure frame (210), and the inlet and outlet of the refrigerant flow channel inside the horizontal storage structure frame (210) are located at the upper left and lower right of the horizontal storage structure frame (210), respectively; The vertical storage structure frame (110) is provided with a lifting device, and the vertical storage structure frame (110) and the horizontal storage structure frame (210) are both provided with a drying device.

2. The plate heat exchanger with liquid storage function according to claim 1, characterized in that, The refrigerant inlet pressing plate (101) is provided with a first opening (1011), and the opening (1011) is in communication with the refrigerant flow channel in the first main heat exchange section (121); The refrigerant outlet pressing plate (102) is provided with a second opening (1021), and an inner jump pipe (108) is assembled on the inner wall of the second opening (1021), and the inner jump pipe (108) is in communication with the refrigerant flow channels in the first main heat exchange section (121), the second refrigerant storage section (122), and the third supercooling heat exchange section (123).

3. The plate heat exchanger with liquid storage function according to claim 2, characterized in that The connection interface between the second refrigerant storage section (122) and the third supercooling heat exchange section (123) is provided with a plate (109), the plate (109) is provided with a flange opening (1091), and the flange opening (1091) and the outer wall surface of the inner jump pipe (108) form a sealing contact surface.

4. The plate heat exchanger with liquid storage function according to claim 1, characterized in that, The lifting device of the vertical liquid storage structure frame (110) comprises a filter screen assembly (1055), a cutoff structure (1101) and a straw slot (1058) arranged in sequence from top to bottom, a straw (1059) is inserted in the straw slot (1058), the other end of the straw (1059) extends to the bottom of the vertical liquid storage structure frame (110), and a double-layer lip structure (1057) and a filter screen (1056) are arranged on the filter screen assembly (1055).

5. The plate heat exchanger with liquid storage function according to claim 4, characterized in that The top end of the vertical liquid storage structure frame (110) is provided with an opening (1050), a plastic cover (105) is detachably installed on the opening (1050), and a sealing ring (1051) is arranged on the outer edge of the connection between the opening (1050) and the plastic cover (105).

6. The plate heat exchanger with liquid storage function according to claim 4, characterized in that The drying device of the vertical liquid storage structure frame (110) comprises a drying bag (10511), and the outer side of the straw slot (1058) is provided with a hook structure (10510) for hanging the drying bag (10511).

7. The plate heat exchanger with liquid storage function according to claim 5, characterized in that The drying device of the horizontal liquid storage structure frame (210) comprises a drying bag (10511), and the horizontal liquid storage structure frame (210) is internally provided with a frame structure (2055) for installing the drying bag (10511), and the frame structure (2055) is arranged at the top of the horizontal liquid storage structure frame (210).

8. The plate heat exchanger with liquid storage function according to claim 7, characterized in that The bottom of the horizontal liquid storage structure frame (210) is provided with an opening structure (2102) in communication with the refrigerant flow channel in the third partial supercooling heat exchange area (123).

9. The plate heat exchanger with liquid storage function according to claim 8, characterized in that The side of the horizontal liquid storage structure frame (210) close to the opening structure (2102) is provided with an opening (1050), and the plastic cover (105) is detachably installed on the opening (1050), and a sealing ring (1051) is arranged on the outer edge of the connection between the opening (1050) and the plastic cover (105).

10. The plate heat exchanger with liquid storage function according to claim 5 or 9, characterized in that The inner side of the plastic cover (105) is provided with a snap spring slot (1131), a snap spring (1052) is installed in the snap spring slot (1131), a plug cover (1053) is installed on one side of the snap spring (1052), an O-shaped ring (1054) is assembled on the plug cover (1053), and sealing surfaces are formed on both sides of the snap spring slot (1131).

Images