Evaporator and air conditioning cabinet

Abstract

The present application relates to the technical fields of automobile air conditioner heat exchange, and especially relates to an evaporator and an air conditioner box. The evaporator comprises an evaporator main body, the evaporator main body comprises at least two groups of evaporator units, the two groups of evaporator units are far away from each other and the two sides thereof facing opposite directions are respectively a first evaporation surface and a second evaporation surface; a first flow channel is provided with a first inlet and a first outlet, refrigerant can flow into the two groups of evaporator units through the first flow channel and flow through the first evaporation surface and the second evaporation surface; a second flow channel is provided with a second inlet and a second outlet, refrigerant can flow into the two groups of evaporator units through the second flow channel and flow through the first evaporation surface and the second evaporation surface; wherein, the first flow channel and the second flow channel are not communicated with each other. There is always a part of the area on the evaporator main body for air flow, the area is not covered by frost layer, which will not affect the normal air outlet of the passenger compartment, the air outlet temperature of the passenger compartment is the same, so as to ensure the comfort of the passenger compartment.

Description

Technical Field

[0001] This invention relates to the field of automotive air conditioning heat exchange technology, and in particular to an evaporator and an air conditioning unit. Background Technology

[0002] In automotive air conditioning or heat pump systems, the air conditioning unit is the main component for heat exchange between the refrigerant and the air in the passenger compartment, performing functions such as cooling, heating, dehumidification, and ventilation. The evaporator in the air conditioning unit is the primary component responsible for cooling the air inside the unit.

[0003] The main reason for the limited range of pure electric vehicles in winter is the high energy consumption of air conditioning for heating. Although heat pump systems are now widely used, which can reduce some of the energy consumption, the external air circulation (air intake from outside the vehicle) or partial external air circulation is still used for heating in winter. The cold air introduced by the external circulation consumes a lot of energy during the heating process. Therefore, to further reduce the energy consumption of air conditioning for heating in winter, the problem of introducing cold air from the external circulation must be solved. While ensuring that the windshield does not fog up, internal air circulation (air intake from inside the vehicle) should be used as much as possible to reduce the introduction of cold outdoor air.

[0004] However, the aforementioned internal air circulation system inevitably faces the issue of dehumidification. The humidity level of the air inside the vehicle needs to be reduced to prevent fogging or frost on the windshield. Otherwise, the requirement of preventing fogging or frost on the windshield cannot be met, as fogging or frost on the windshield reduces the driver's visibility and affects driving safety. In winter, when heating is required, the evaporator also operates. Utilizing the loop advantage of current heat pump systems, the evaporator's evaporation temperature is kept lower than the inner surface temperature of the windshield. This way, the air is dehumidified by the evaporator before being heated, preventing fogging or frost on the glass due to excessive humidity. The heat absorbed by the evaporator is released through the heat exchange core of the air conditioning unit, returning the heat to the air. This reduces energy consumption while achieving the purpose of dehumidification.

[0005] However, the refrigerant in the existing evaporator has a single flow path and cannot be used directly in winter. Therefore, when the evaporator operates at a temperature below freezing, the water vapor in the air will directly turn from a gaseous state into solid ice crystals that adhere to the evaporator surface. After long-term operation, the evaporator surface will be covered with frost, blocking the air flow channel. The air cannot flow through the evaporator, and ultimately the air cannot be dehumidified by the evaporator and then heated by the internal cooling system before being blown into the passenger compartment. Summary of the Invention

[0006] This invention provides an evaporator to solve the problem in the prior art where the refrigerant has a single flow path in the evaporator, which leads to frost formation on the evaporator surface after operation, thus hindering airflow.

[0007] The present invention provides an evaporator, comprising: an evaporator body, including at least two sets of evaporator units, the two sets of evaporator units being arranged side by side, and the two sides of the two sets of evaporator units being far apart and facing opposite directions being a first evaporation surface and a second evaporation surface, respectively;

[0008] The first flow channel is formed between the two sets of evaporator units. The first flow channel is provided with a first inlet for introducing refrigerant and a first outlet for discharging refrigerant. The refrigerant can flow into the two sets of evaporator units through the first flow channel and flow through the first evaporation surface and the second evaporation surface.

[0009] The second flow channel is formed between the two sets of evaporator units. The second flow channel is provided with a second inlet for introducing refrigerant and a second outlet for discharging refrigerant. The refrigerant can flow into the two sets of evaporator units through the second flow channel and flow through the first evaporation surface and the second evaporation surface.

[0010] The first flow channel and the second flow channel are not connected to each other.

[0011] According to an evaporator provided by the present invention, the evaporator unit includes a cooling coil and two spaced-apart manifolds, each manifold having one open end and the other closed end, the cooling coil being located between the two manifolds, the two ends of the cooling coil being connected to the openings of the two manifolds respectively, and the two manifolds being arranged facing each other such that the openings of the two manifolds face opposite directions;

[0012] The manifold is provided with four separated manifold chambers, a first connecting structure, and a second connecting structure. The first connecting structure is located in another manifold chamber away from the manifold chambers at both ends of the manifold. In the manifolds of the two sets of evaporator units, two adjacent manifold chambers at the same height are connected by the first connecting structure. In the manifolds of the same set of evaporator units, the second connecting structure is used to connect two other manifold chambers that are not adjacent on opposite sides of the manifold chamber corresponding to the first connecting structure, and the second connecting structure is located away from the manifold chamber where the opening of the manifold is located.

[0013] In one set of evaporator units, the opening of the manifold on one side is the first inlet of the first flow channel, and the opening of the manifold on the other side is the second outlet of the second flow channel; in another set of evaporator units, the opening of the manifold on one side is the first outlet of the first flow channel, and the opening of the manifold on the other side is the second inlet of the second flow channel.

[0014] According to an evaporator provided by the present invention, four collection chambers are divided into a first chamber, a second chamber, a third chamber and a fourth chamber in order from near to far from the opening position of the collection tube, wherein one side of the first chamber is the open end of the collection tube and the fourth chamber is the closed end of the collection tube.

[0015] The first connecting structure is located in the third chamber, the second connecting structure passes through the third chamber, and one end of the second connecting structure extends into the second chamber and the other end extends into the fourth chamber, so as to connect the second chamber and the fourth chamber.

[0016] The third chambers of the manifolds of the two sets of evaporator units are connected by two first connecting structures.

[0017] According to an evaporator provided by the present invention, the manifold comprises:

[0018] The tube body is hollow inside and open at both ends;

[0019] Three partition plates, and multiple partition plates are spaced apart in the tube to divide the tube into four flow collection chambers. The first connecting structure is opened on one side of the tube and located between two partition plates. The second connecting structure passes through the two partition plates corresponding to the first connecting structure.

[0020] An end cap is disposed on the tube body and is used to close one end opening of the tube body.

[0021] According to an evaporator provided by the present invention, the first communication structure is a communication hole formed in the tube body.

[0022] According to an evaporator provided by the present invention, the second communication structure is a communication pipe, which is hollow inside and open at both ends;

[0023] The partition plates on opposite sides of the first connecting structure are provided with insertion through holes that cooperate with the connecting pipe.

[0024] According to an evaporator provided by the present invention, the tube body includes a first sidewall, a second sidewall, a third sidewall and a fourth sidewall, wherein the first sidewall and the third sidewall are arranged opposite to each other, and the second sidewall and the fourth sidewall are arranged opposite to each other;

[0025] The first sidewall is connected to the cooling pipe, and the third sidewall is an arc-shaped protrusion.

[0026] According to an evaporator provided by the present invention, the first sidewall of the tube body is provided with a plurality of mounting through holes along its length direction, and the cooling pipe includes a plurality of pipe fittings, the ends of the pipe fittings corresponding one-to-one with the mounting through holes and being inserted into each other.

[0027] According to an evaporator provided by the present invention, the end face of the pipe fitting is arranged to protrude from the inner side of the first sidewall of the pipe body.

[0028] The present invention also provides an air conditioning unit, comprising: a housing having an air inlet area and an air outlet area; a heat exchange core disposed within the housing; and the aforementioned evaporator disposed within the housing, the evaporator being located between the air inlet area and the heat exchange core; wherein the first flow channel and the second flow channel can operate simultaneously or alternately.

[0029] The present invention provides an evaporator in which the evaporator body is configured to include at least two sets of evaporator units. Since a first flow channel and a second flow channel are formed between the two sets of evaporator units, both the first flow channel and the second flow channel can allow refrigerant to flow into the two sets of evaporator units and the first evaporation surface and the second evaporation surface. With the above structure, when the evaporator is working, refrigerant can be introduced into only the first flow channel or the second flow channel, or both the first and second flow channels can be introduced into the refrigerant. Therefore, in summer, the first and second flow channels can be selected to work together, and in winter, the first and second flow channels can be selected to work alternately. For example, when the evaporator corresponding to part of the first evaporation surface and part of the second evaporation surface of the first flow channel is covered with frost, the refrigerant inside the first flow channel will no longer circulate. Since the air temperature inside the vehicle is higher than 0°C due to factors such as the breathing of passengers, the energy of the hot air inside the vehicle is used to melt the frost on the surface of part of the first evaporation surface and part of the second evaporation surface of the evaporator unit into water and discharge it. At this time, since there is no frost layer on the surface of part of the first evaporation surface and part of the second evaporation surface of the second flow channel, the refrigerant inside the second flow channel circulates and cools and dehumidifies the air flowing through it. The system operates by alternating between frosting and dehumidifying, and defrosting and draining. During dehumidification, there is always a portion of the evaporator body that allows air to flow through without being covered by frost, thus not affecting the normal airflow from the passenger compartment. In addition, both the first and second flow channels can carry refrigerant through the first and second evaporating surfaces. Therefore, when the first and second flow channels work alternately, the cooling temperature at the first and second evaporating surfaces of the evaporator body is the same, and the airflow temperature from the passenger compartment is the same, ensuring the comfort of the passenger compartment. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a first-view structural schematic diagram of the evaporator provided by the present invention, wherein the flow directions of the first flow channel and the second flow channel are as shown by the arrows;

[0032] Figure 2 This is a second-view structural schematic diagram of the evaporator provided by the present invention, wherein the flow directions of the first flow channel and the second flow channel are as shown by the arrows;

[0033] Figure 3 This is a cross-sectional schematic diagram of the evaporator provided by the present invention;

[0034] Figure 4 yes Figure 3 Partially exploded diagram;

[0035] Figure 5 yes Figure 1 A schematic diagram of the decomposition process;

[0036] Figure 6 This is a schematic diagram of the manifold structure;

[0037] Figure 7 This is a schematic diagram of the cross-section of two manifolds connected when two sets of evaporator units are arranged side by side;

[0038] Figure 8 This is a simplified structural diagram of two sets of evaporator units arranged side by side.

[0039] Figure label:

[0040] 10. Evaporator unit; 11. Cooling coil; 12. Manifold; 121. Manifold chamber; 122. First connecting structure; 123. Second connecting structure; 124. Pipe body; 125. Partition plate; 126. End cap; 1251. Insertion through hole; 1241. First side wall; 1242. Second side wall; 1243. Third side wall; 1244. Fourth side wall; 1245. Mounting through hole; 20. First evaporation surface; 30. Second evaporation surface; 40. First flow channel; 41. First inlet; 42. First outlet; 50. Second flow channel; 51. Second inlet; 52. Second outlet. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0042] The following is combined with Figures 1-8 The present invention describes an evaporator and an air conditioning unit. The air conditioning unit includes a housing with an air inlet zone and an air outlet zone; a heat exchange core disposed within the housing; and the aforementioned evaporator disposed within the housing, located between the air inlet zone and the heat exchange core.

[0043] It's important to note that during winter heating, to prevent fogging or frost on the windshield, the external air circulation must be used. This involves introducing low-humidity outside air into the air conditioning unit, heating it through the heat exchange core, and then blowing it into the passenger compartment. Because of the occupants' breathing, the air in the passenger compartment has a higher humidity level. If internal air circulation were used, this higher humidity air would be blown onto the windshield, and since no dry, fresh air is being introduced, the humidity inside the vehicle would continue to rise. Eventually, this high-humidity air comes into contact with the inner wall of the windshield. Because the windshield temperature is close to the outside temperature and far below the dew point temperature of the air, the moisture in the air will condense and form fog or frost on the windshield.

[0044] From a driving safety perspective, using external air circulation prevents fogging or frost on the windows, which is beneficial for driving safety. However, since it introduces cold outside air, the heating process consumes a lot of electrical energy, leading to high energy consumption in winter and severely impacting the winter range of pure electric vehicles. However, using more internal air circulation necessitates addressing dehumidification issues. Therefore, the evaporator structure of this invention is incorporated into the air conditioning unit to effectively solve the dehumidification problem.

[0045] It should also be noted that the air intake area of ​​the unit is equipped with an air intake module, and the air outlet area is equipped with an air distribution module. The air intake module mainly controls the air source for the air conditioning unit. Air intake from outside the vehicle is external circulation, and air intake from inside the vehicle is internal circulation. The air intake mode is switched through the internal and external circulation dampers. The air distribution module is used to adjust the direction of the air outlet. The mode damper can be used to adjust the direction of the air outlet to blow through the windows, feet, or face. The heat exchange core can be either a heater core or an indoor condenser. Generally, in direct heat pump air conditioning systems, the indoor condenser is used as the heating module in the air conditioning unit; in indirect heat pump air conditioning systems or PTC heating systems, the heater core is used as the heating module in the air conditioning unit.

[0046] like Figures 1 to 8 As shown, according to the present invention, an evaporator is provided, comprising: an evaporator body including two sets of evaporator units 10 arranged side by side, the two sets of evaporator units 10 having oppositely facing sides respectively a first evaporation surface 20 and a second evaporation surface 30; a first flow channel 40 formed between the two sets of evaporator units 10, the first flow channel 40 having a first inlet 41 for introducing refrigerant and a first outlet 42 for discharging refrigerant, the refrigerant flowing into the two sets of evaporator units 10 through the first flow channel 40 and flowing through the first evaporation surface 20 and the second evaporation surface 30; and a second flow channel 50 formed between the two sets of evaporator units 10, the second flow channel 50 having a second inlet 51 for introducing refrigerant and a second outlet 52 for discharging refrigerant, the refrigerant flowing into the two sets of evaporator units 10 through the second flow channel 50 and flowing through the first evaporation surface 20 and the second evaporation surface 30; wherein the first flow channel 40 and the second flow channel 50 are not interconnected. Of course, in some embodiments, the evaporator body may also include three or four evaporator units 10, which can work alternately.

[0047] It should be noted that in this invention, the first flow channel 40 and the second flow channel 50 of the evaporator in the housing can work simultaneously or alternately. In winter, the evaporator can adopt full internal circulation and be equipped with a brand-new heat pump system to further reduce the heating energy consumption of the passenger cabin in winter. In summer cooling conditions, the evaporator temperature uniformity is better and the efficiency is higher.

[0048] The present invention provides an evaporator in which the evaporator body is configured to include at least two sets of evaporator units 10. Since a first flow channel 40 and a second flow channel 50 are formed between the two sets of evaporator units 10, both the first flow channel 40 and the second flow channel 50 can allow refrigerant to flow into the two sets of evaporator units 10 and the first evaporation surface 20 and the second evaporation surface 30. With the above structure, when the evaporator is working, only the first flow channel 40 or the second flow channel 50 can be circulated with refrigerant, or both the first flow channel 40 and the second flow channel 50 can be circulated with refrigerant. Therefore, in summer, the first flow channel 40 and the second flow channel 50 can be selected to work together, and in winter, the first flow channel 40 and the second flow channel 50 can be selected to work alternately. For example, when the evaporator corresponding to part of the first evaporation surface 20 and part of the second evaporation surface 30 of the first flow channel 40 is covered with frost, the refrigerant inside the first flow channel 40 will no longer circulate. Since the air temperature inside the vehicle is higher than 0°C due to factors such as the breathing of the occupants, the energy of the hot air inside the vehicle is used to melt the frost on the surface of part of the first evaporation surface 20 and part of the second evaporation surface 30 of the evaporator unit 10 into water and discharge it. At this time, since there is no frost on the surface of part of the first evaporation surface 20 and part of the second evaporation surface 30 of the second flow channel 50, the refrigerant inside the second flow channel 50 circulates and cools and dehumidifies the air flowing through it. The system operates by alternating between frosting and dehumidifying, and defrosting and draining. During the dehumidification process, there is always a portion of the evaporator body that allows air to flow through, and this area is not covered by frost, thus not affecting the normal airflow from the passenger compartment. In addition, both the first flow channel 40 and the second flow channel 50 can allow refrigerant to flow through the first evaporation surface 20 and the second evaporation surface 30. Therefore, when the first flow channel 40 and the second flow channel 50 work alternately, the cooling temperature at the first evaporation surface 20 and the second evaporation surface 30 of the evaporator body is the same, and the airflow temperature from the passenger compartment is the same, thus ensuring the comfort of the passenger compartment.

[0049] like Figure 8 As shown, in this invention, for example, the foot-blowing air outlets are directed towards the driver's side foot-blowing air outlet and the passenger's side foot-blowing air outlet, respectively. The driver's side foot-blowing air outlet is close to the first evaporation surface 20, and the passenger's side foot-blowing air outlet is close to the second evaporation surface 30. Therefore, when the first flow channel 40 and the second flow channel 50 work alternately, both the first flow channel 40 and the second flow channel 50 can allow the refrigerant to flow through the first evaporation surface 20 and the second evaporation surface 30, which can satisfy the temperature uniformity of the air outlet in the passenger compartment. The average temperature of the air entering the heat exchange core is the same, and the air outlet temperature biased towards the first evaporation surface 20 is lower than that of the air outlet biased towards the second evaporation surface 30, thus ensuring the comfort of the passenger compartment.

[0050] Reference Figures 1 to 7As shown, in some embodiments of the present invention, the evaporator unit 10 includes a cooling coil 11 and two spaced-apart manifolds 12. One end of each manifold 12 is open, and the other end is closed. The cooling coil 11 is located between the two manifolds 12, with both ends of the cooling coil 11 connected to the openings of the two manifolds 12. The two manifolds 12 are arranged facing each other, so that the openings of the two manifolds 12 face opposite directions. Each manifold 12 is provided with four spaced-apart manifold chambers 121, a first connecting structure 122, and a second connecting structure 123. The first connecting structure 122 is located in another manifold chamber 121 away from the manifold chambers 121 at both ends of the manifold 12. In the two sets of manifolds 12 of the evaporator unit 10, adjacent manifolds at the same height are connected... The chambers 121 are connected by a first connecting structure 122; in the manifolds 12 of the same group of evaporator units 10, the second connecting structure 123 is used to connect the manifolds 121 corresponding to the first connecting structure 122 to two other manifolds 121 that are not adjacent on opposite sides, and the second connecting structure 123 is away from the manifold 121 where the opening of the manifold 12 is located; wherein, in one group of evaporator units 10, the opening of the manifold 12 on one side is the first inlet 41 of the first flow channel 40, and the opening of the manifold 12 on the other side is the second outlet 52 of the second flow channel 50; in another group of evaporator units 10, the opening of the manifold 12 on one side is the first outlet 42 of the first flow channel 40, and the opening of the manifold 12 on the other side is the second inlet 51 of the second flow channel 50.

[0051] It should be noted that the two manifolds 12 of each evaporator unit 10 are arranged vertically at intervals. Of course, in one embodiment, the two manifolds 12 can also be arranged horizontally at intervals, which is not limited here.

[0052] With the above structure, when the two sets of evaporator units 10 are arranged side by side, they are connected by the first connecting structure 122 between them. Within the same set of evaporator units 10, since the vertical manifolds 12 are arranged facing each other, the vertical first connecting structures 122 and the second connecting structures 123 are staggered. In the manifolds 12, two adjacent manifold chambers 121 are not connected. The second connecting structure 123 connects the other two non-adjacent manifold chambers 121 on the other two sides of the first connecting structure 122, realizing cross-process connection. Thus, the first flow channel 40 and the second flow channel 50 flow alternately on the first evaporation surface 20 and the second evaporation surface 30 without being connected. The design is ingenious and the structural arrangement is reasonable and simple.

[0053] Understandably, referring to Figures 3 to 7As shown, in some embodiments of the present invention, the four manifold chambers 121 are divided into a first chamber, a second chamber, a third chamber, and a fourth chamber according to the opening position of the relative manifold 12 from near to far. The first chamber has one side of the open end of the manifold 12, and the fourth chamber has the closed end of the manifold 12. The first connecting structure 122 is located in the third chamber, and the second connecting structure 123 passes through the third chamber. One end of the second connecting structure 123 extends into the second chamber, and the other end extends into the fourth chamber, so as to connect the second chamber and the fourth chamber. The third chambers of the manifolds 12 of the two sets of evaporator units 10 are connected by the cooperation of the two first connecting structures 122.

[0054] The above structure allows the evaporator to have two flow channels, each with four flow paths, thus dividing the evaporator body into eight parts. Therefore, when the first flow channel 40 and the second flow channel 50 work alternately, a portion of the first evaporation surface 20 and the second evaporation surface 30 will be working while the other portion will not work. This ensures the uniformity of the air temperature at the passenger compartment outlet, the same average temperature of the air entering the heat exchange core, and the same air temperature at the outlet biased towards the first evaporation surface 20 and the same air temperature at the outlet biased towards the second evaporation surface 30, thus guaranteeing the comfort of the passenger compartment.

[0055] Specifically, refer to Figures 3 to 7 As shown, in some embodiments of the present invention, the manifold 12 includes: a pipe body 124, which is hollow inside and open at both ends; three partition plates 125, which are spaced apart inside the pipe body 124 to divide the pipe body 124 into four manifold chambers 121; a first connecting structure 122 is opened on one side of the pipe body 124 and located between two partition plates 125; a second connecting structure 123 passes through the two partition plates 125 corresponding to the first connecting structure 122; and an end cap 126, which is disposed on the pipe body 124 and is used to close one end opening of the pipe body 124. The structure is reasonably arranged, and the partition plates 125 provide a certain degree of support for the structure of the pipe body 124, thereby improving the structural performance.

[0056] Understandably, referring to Figures 4 to 7 As shown, in some embodiments of the present invention, the first connecting structure 122 is a connecting hole opened in the pipe body 124, which is simple in structure and easy to manufacture. When the two sets of evaporator units 10 are arranged side by side, the connecting holes in the two sets of evaporator units 10 can be connected by inserting the mounting pipe fittings into the connecting holes in the two sets of evaporator units 10, or by welding the positions of the connecting holes in the two sets of evaporator units 10.

[0057] Specifically, in this invention, the first connecting structures 122 of the two sets of evaporator units 10 are arranged facing each other and close to each other; of course, in some embodiments, the first connecting structures 122 of the two sets of evaporator units 10 can be arranged in the same direction and connected by mounting pipes, which is not limited here.

[0058] Understandably, referring to Figures 3 to 7 As shown, in some embodiments of the present invention, the second connecting structure 123 is a connecting pipe, which is hollow inside and open at both ends; wherein, the partition plates 125 on opposite sides of the first connecting structure 122 are provided with insertion through holes 1251 for inserting and engaging with the connecting pipe, which is simple in structure and easy to manufacture. During installation, the connecting pipe is passed through the insertion through holes 1251 and connected and fixed to the partition plates 125 by welding or other means. Of course, in some embodiments, the second connecting structure 123 may also be configured to be integrally formed with the two partition plates and have an I-shaped cross-section.

[0059] It should be noted that in some embodiments of the present invention, the connecting pipe is an aluminum alloy with a welding layer, a composite material; since the aluminum material, i.e. the connecting pipe, is a composite material, and the outer layer has a low melting point welding layer, the partition plate 125 and the connecting pipe will be directly melted and welded together at high temperature.

[0060] Specifically, refer to Figures 1 to 7 As shown, in some embodiments of the present invention, the tube body 124 includes a first sidewall 1241, a second sidewall 1242, a third sidewall 1243, and a fourth sidewall 1244. The first sidewall 1241 and the third sidewall 1243 are arranged opposite to each other, and the second sidewall 1242 and the fourth sidewall 1244 are arranged opposite to each other. The first sidewall 1241 is connected to the cooling coil 11, and the third sidewall 1243 is an arc-shaped protrusion. Using the above structure, setting the third sidewall 1243 as an arc-shaped protrusion is beneficial to improving the pressure-bearing performance of the evaporator. It should be noted that, in some embodiments of the present invention, the first sidewall 1241, the second sidewall 1242, and the fourth sidewall 1244 may be formed by bending a single plate. After the partition plate 125 and the connecting pipe are welded together, another plate may be used as the third sidewall 1243 and welded to the end face of the second sidewall 1242 and the fourth sidewall 1244 away from the first sidewall 1241; or the first sidewall 1241, the second sidewall 1242, the third sidewall 1243, and the fourth sidewall 1244 may be formed by welding them together in sequence, and the end cap 126 may be inserted into the pipe body 124 and welded together.

[0061] Understandably, referring to Figure 5 and Figure 7In some embodiments of the present invention, the first sidewall 1241 of the tube body 124 is provided with a plurality of mounting through holes 1245 along its length direction. The cooling pipe 11 includes a plurality of pipe fittings. The ends of the pipe fittings correspond one-to-one with the mounting through holes 1245 and are inserted into each other. The structure is reasonable. After the pipe fittings and the tube body 124 are inserted, they are connected and fixed by welding or other means, and the assembly is reliable.

[0062] Specifically, refer to Figure 3 and Figure 4 In some embodiments of the present invention, the end face of the pipe fitting protrudes from the inner side of the first side wall 1241 of the pipe body 124, which increases the welding contact area between the pipe fitting and the pipe body 124. The larger welding contact area can improve the welding yield and facilitate welding.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An evaporator, characterized in that, include: The evaporator body includes at least two sets of evaporator units (10), the two sets of evaporator units (10) are arranged side by side, and the two sides of the two sets of evaporator units (10) that are far apart and facing opposite directions are respectively the first evaporation surface (20) and the second evaporation surface (30). The first flow channel (40) is formed between the two sets of evaporator units (10). The first flow channel (40) is provided with a first inlet (41) for introducing refrigerant and a first outlet (42) for discharging refrigerant. The refrigerant can flow into the two sets of evaporator units (10) through the first flow channel (40) and flow through the first evaporation surface (20) and the second evaporation surface (30). The second flow channel (50) is formed between the two sets of evaporator units (10). The second flow channel (50) is provided with a second inlet (51) for introducing refrigerant and a second outlet (52) for discharging refrigerant. The refrigerant can flow into the two sets of evaporator units (10) through the second flow channel (50) and flow through the first evaporation surface (20) and the second evaporation surface (30). The first flow channel (40) and the second flow channel (50) are not connected to each other; The evaporator unit (10) includes a cooling coil (11) and two spaced-apart manifolds (12). One end of each manifold (12) is open, and the other end of each manifold (12) is closed. The cooling coil (11) is located between the two manifolds (12). Both ends of the cooling coil (11) are connected to the openings of the two manifolds (12), and the two manifolds (12) are arranged facing each other so that the openings of the two manifolds (12) face opposite directions. The manifold (12) is provided with four separated manifold chambers (121), a first connecting structure (122), and a second connecting structure (123). The first connecting structure (122) is located in another manifold chamber (121) away from the manifold chambers (121) at both ends of the manifold (12). In the manifolds (12) of the two sets of evaporator units (10), two adjacent manifold chambers (121) at the same height are connected by the first connecting structure (122). In the manifolds (12) of the same set of evaporator units (10), the second connecting structure (123) is used to connect two other manifold chambers (121) that are not adjacent on opposite sides of the manifold chamber (121) corresponding to the first connecting structure (122), and the second connecting structure (123) is away from the manifold chamber (121) where the opening of the manifold (12) is located. In one set of evaporator units (10), the opening of the manifold (12) on one side is the first inlet (41) of the first flow channel (40), and the opening of the manifold (12) on the other side is the second outlet (52) of the second flow channel (50); in another set of evaporator units (10), the opening of the manifold (12) on one side is the first outlet (42) of the first flow channel (40), and the opening of the manifold (12) on the other side is the second inlet (51) of the second flow channel (50). According to the relative opening position of the manifold (12), the four manifold chambers (121) are divided into a first chamber, a second chamber, a third chamber and a fourth chamber in order from near to far. The first chamber is located on one side of the open end of the manifold (12), and the fourth chamber is located on the closed end of the manifold (12). The first connecting structure (122) is located in the third chamber, and the second connecting structure (123) passes through the third chamber. One end of the second connecting structure (123) extends into the second chamber, and the other end extends into the fourth chamber, so as to connect the second chamber and the fourth chamber. The third chambers of the manifolds (12) of the two sets of evaporator units (10) are connected by two first connecting structures (122); The manifold (12) includes a pipe body (124), which is hollow inside and open at both ends; The first connecting structure (122) is a connecting hole opened in the tube body (124); The second connecting structure (123) is a connecting pipe, which is hollow inside and open at both ends; When the evaporator is working, the first and second flow channels work together in summer, and the first and second flow channels work alternately in winter.

2. The evaporator according to claim 1, characterized in that, The manifold (12) includes: Three partition plates (125) are spaced apart inside the tube body (124) to divide the tube body (124) into four collection chambers (121). The first connecting structure (122) is opened on one side of the tube body (124) and located between two partition plates (125). The second connecting structure (123) passes through the two partition plates (125) corresponding to the first connecting structure (122). End cap (126) is disposed on the tube body (124) and the end cap (126) is used to close one end opening of the tube body (124).

3. The evaporator according to claim 2, characterized in that, in, The partition plates (125) on both sides of the first connecting structure (122) are provided with insertion through holes (1251) that are compatible with the connecting pipe.

4. The evaporator according to claim 2, characterized in that, The tube body (124) includes a first sidewall (1241), a second sidewall (1242), a third sidewall (1243) and a fourth sidewall (1244), wherein the first sidewall (1241) and the third sidewall (1243) are arranged opposite to each other, and the second sidewall (1242) and the fourth sidewall (1244) are arranged opposite to each other; The first sidewall (1241) is connected to the cooling pipe (11), and the third sidewall (1243) is an arc-shaped protrusion.

5. The evaporator according to claim 4, characterized in that, The first sidewall (1241) of the tube body (124) is provided with a plurality of mounting through holes (1245) along its length direction. The cooling pipe (11) includes a plurality of pipe fittings, the ends of which correspond one-to-one with the mounting through holes (1245) and are inserted into each other.

6. The evaporator according to claim 5, characterized in that, The end face of the pipe fitting protrudes from the inner side of the first sidewall (1241) of the pipe body (124).

7. An air conditioning unit, characterized in that, include: The enclosure is provided with an air inlet area and an air outlet area; A heat exchange core is disposed inside the housing; The evaporator according to any one of claims 1 to 6, wherein the evaporator is disposed in the housing and the evaporator is located between the air inlet zone and the heat exchange core; in, The first flow channel (40) and the second flow channel (50) can work simultaneously or alternately.

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