Plate type heat regenerator, vehicle air conditioning system and vehicle

Abstract

The utility model belongs to the technical field of heat regeneration devices, and particularly relates to a plate type heat regenerator, a vehicle air conditioning system and a vehicle. The plate type heat regenerator comprises a heat exchange core body, a low-pressure inlet, a heating low-pressure outlet, a refrigerating low-pressure outlet, a high-pressure inlet and a high-pressure outlet, a straight-through flow channel, a heat exchange flow channel and a high-pressure flow channel are arranged in the heat exchange core body, the straight-through flow channel is communicated between the low-pressure inlet and the heating low-pressure outlet, and the heat exchange flow channel is communicated between the straight-through flow channel and the refrigerating low-pressure outlet; the straight-through flow channel and the heat exchange flow channel are isolated from the high-pressure flow channel, the heat exchange flow channel is in heat transfer contact with the high-pressure flow channel, a low-pressure refrigerant in an air conditioner heating mode flows out through the heating low-pressure outlet, and a low-pressure refrigerant in an air conditioner refrigerating mode flows out through the refrigerating low-pressure outlet. The low-pressure refrigerant has two flowing paths in the air conditioner refrigeration mode and the air conditioner heating mode so as to meet different heat exchange requirements in the air conditioner refrigeration mode and the air conditioner heating mode, and the performance of the air conditioner system is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of regenerative device, especially relates to a plate type regenerator, vehicle air conditioning system and vehicle. BACKGROUND

[0002] In the vehicle air conditioning system, in order to improve the refrigeration mode refrigerating capacity, heating mode heating capacity and system stability, regenerative tube is used to realize refrigerant energy recovery.

[0003] The existing regenerator is generally sleeve type, comprising outer pipe and inner pipe arranged in the outer pipe, low-pressure refrigerant passage is formed in the inner pipe, and high-pressure refrigerant passage is formed between the inner wall of outer pipe and the outer wall of inner pipe. High-pressure inlet and high-pressure outlet are arranged on the appearance, and the two ends of the inner end form low-pressure inlet and low-pressure inlet respectively. High-pressure refrigerant can flow into high-pressure refrigerant passage from high-pressure inlet and flow out from high-pressure outlet, and low-pressure refrigerant can flow into low-pressure refrigerant passage from low-pressure inlet and flow out from low-pressure inlet, to realize heat exchange of high-pressure refrigerant and low-pressure refrigerant.

[0004] However, since the actual demand of refrigeration mode and heating mode for energy recovery amount is not consistent, the same regenerator cannot fully exert the performance of air conditioning system. SUMMARY

[0005] The utility model relates to a plate type regenerator, vehicle air conditioning system and vehicle for solving the problem that the existing vehicle air conditioning system cannot fully exert the performance of air conditioning system.

[0006] To solve the above technical problem, on the one hand, the utility model embodiment provides a plate type regenerator, including heat exchange core body, low-pressure inlet, heating low-pressure outlet, refrigeration low-pressure outlet, high-pressure inlet and high-pressure outlet, the straight-through flow channel, heat exchange flow channel and high-pressure flow channel are arranged in the heat exchange core body, the straight-through flow channel is communicated between the low-pressure inlet and the heating low-pressure outlet along the first direction, the heat exchange flow channel is communicated between the straight-through flow channel and the refrigeration low-pressure outlet;

[0007] The straight-through flow channel and the heat exchange flow channel are insulated from the high-pressure flow channel, and the heat exchange flow channel and the high-pressure flow channel are in heat transfer contact, the heating low-pressure outlet is used for low-pressure refrigerant flow under air conditioning heating mode, and the refrigeration low-pressure outlet is used for low-pressure refrigerant flow under air conditioning refrigeration mode.

[0008] Optionally, the heat exchange core body is formed by stacking a plurality of chips along the first direction, the edge of adjacent two chips is connected, and the middle part of adjacent two chips is spaced apart to form a first single-layer flow channel between them, and all the first single-layer flow channels are sequentially communicated to constitute the heat exchange flow channel.

[0009] Each of the chips is provided with a first through hole penetrating in the first direction, and all the first through holes are sequentially communicated in the first direction to form the straight-through flow channel.

[0010] Optionally, in the two adjacent chips, the cross-sectional area of the first through hole on one of the chips is greater or smaller than that of the first through hole on the other chip.

[0011] Optionally, in the two adjacent chips, the two first through holes are arranged with a center offset.

[0012] Optionally, the cross-sectional area of the low-pressure inlet is greater or smaller than that of the first through hole on the adjacent chip.

[0013] Optionally, the cross-sectional area of the heating low-pressure outlet is greater or smaller than that of the low-pressure inlet.

[0014] Optionally, the plurality of chips are divided into top chips, middle chips and bottom chips, the top chips are located at the top of the heat exchange core body, and the bottom chips are located at the bottom of the heat exchange core body.

[0015] The bottom chip and the middle chip are both provided with a second through hole penetrating in the first direction, each of the first single-layer flow channels communicates the adjacent second through holes, and the second through hole on the bottom chip is communicated with the refrigeration low-pressure outlet.

[0016] Optionally, the middle chip is provided with a second single-layer flow channel, and the second single-layer flow channel is isolated from the first single-layer flow channel.

[0017] The bottom chip and the middle chip are both provided with a third through hole and a fourth through hole penetrating in the first direction, the third through hole on the bottom chip is communicated with the high-pressure inlet, the fourth through hole on the bottom chip is communicated with the high-pressure outlet, and all the second single-layer flow channels are sequentially communicated through the third through hole and the fourth through hole to form the high-pressure flow channel.

[0018] Optionally, the refrigeration low-pressure outlet, the low-pressure inlet, the high-pressure inlet and the high-pressure outlet are located on the same side of the heat exchange core body and arranged in a quadrilateral, the high-pressure inlet and the high-pressure outlet are on one diagonal line, the low-pressure inlet and the refrigeration low-pressure outlet are on the other diagonal line, and the low-pressure inlet and the heating low-pressure outlet are oppositely arranged in the first direction.

[0019] Optionally, it further comprises a top plate and a mounting plate, the top plate is fixed at the top of the heat exchange core body, the mounting plate is fixed at the bottom of the heat exchange core body, and the heating low-pressure outlet, the refrigeration low-pressure outlet, the low-pressure inlet, the high-pressure inlet and the high-pressure outlet are arranged on the top plate and the mounting plate.

[0020] Optionally, a heat insulation plate is further included, a periphery of the heat insulation plate is attached to a plate surface of the top plate away from the heat exchange core, and a middle portion of the heat insulation plate is curved away from the heat exchange core to form a heat insulation cavity between the heat insulation plate and the top plate.

[0021] In another aspect, the utility model provides a kind of vehicle air conditioning system, including compression pump, condenser, evaporator, circulation pipeline and above-mentioned plate heat regenerator, the compression pump, condenser, evaporator and plate heat regenerator are connected by the circulation pipeline, high pressure refrigerant pumped by the compression pump flows through the condenser, and then, from the high pressure inlet, it flows into the high pressure flow channel, and the low pressure refrigerant that flows out of the evaporator flows into the heat exchange core from the low pressure inlet, and then selectively flows out from the refrigeration low pressure outlet and heating low pressure outlet.

[0022] Optionally, a first valve and a second valve are further included, the first valve is installed in the heating low pressure outlet, and the second valve is installed in the refrigeration low pressure outlet, in air conditioning heating mode, the first valve is opened, and the second valve is closed; in air conditioning refrigeration mode, the first valve is closed, and the second valve is opened.

[0023] In another aspect, the utility model provides a kind of vehicle, including above-mentioned vehicle air conditioning system.

[0024] The plate heat regenerator of the utility model, low pressure refrigerant has two flow paths in air conditioning refrigeration mode and air conditioning heating mode, in air conditioning heating mode, after flowing into from low pressure inlet, most of low pressure refrigerant flows through straight-through flow channel along first direction, and a small part flows into heat exchange flow channel and exchanges heat with high pressure refrigerant in high pressure flow channel, and finally flows out from heating low pressure outlet. In air conditioning refrigeration mode, low pressure refrigerant that flows into from low pressure inlet will all flow through second flow channel to flow out from refrigeration low pressure outlet, so that more low pressure refrigerant exchanges heat with high pressure refrigerant in high pressure flow channel in refrigeration mode, to meet the different heat exchange quantity demand in air conditioning refrigeration mode and air conditioning heating mode, improve air conditioning system performance. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The structure schematic view of plate heat regenerator provided for an embodiment of the utility model is shown in the figure;

[0026] Figure 2 The structure schematic view of another view of Figure 1 ;

[0027] Figure 3 The top view of Figure 1 ;

[0028] Figure 4 The explosion view of Figure 1 ;

[0029] Figure 5 is Figure 3 an A-A sectional view of Fig.

[0030] Figure 6 is Figure 3 a B-B sectional view of Fig.

[0031] Figure 7 is Figure 3 a C-C sectional view of Fig.

[0032] The reference signs in the description are as follows:

[0033] 1, heat exchange core; 11, top chip; 12, middle chip; 121, first sub-chip; 122, second sub-chip; 123, second single-layer flow channel; 13, bottom chip; 14, first through hole; 15, second through hole; 16, third through hole; 17, fourth through hole; 18, straight-through flow channel; 19, first single-layer flow channel; 2, low-pressure inlet; 3, heating low-pressure outlet; 4, refrigeration low-pressure outlet; 5, high-pressure inlet; 6, high-pressure outlet; 7, top plate; 8, bottom plate; 9, heat insulation plate; 10, turbulence structure. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical schemes and beneficial effects solved by the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and do not limit the utility model.

[0035] For the existing sleeve type regenerator, due to the inconsistent energy recovery amount demand of air conditioner refrigeration mode and air conditioner heating mode, if one regenerator is adopted, the different energy recovery amount demand under different modes cannot be met, so that the air conditioning system performance cannot be fully exerted, and if two regenerators are adopted, the pipeline needs to be increased simultaneously, which is high in cost, large in space demand and inconsistent with the existing heat management integration trend.Moreover, the sleeve type regenerator is large in occupied space and is not easy to integrate. In order to solve the above problems, the utility model provides a plate type regenerator.

[0036] As Figures 1 to 4 shown, the utility model one embodiment provides a plate type regenerator, which comprises a heat exchange core 1, a low-pressure inlet 2, a heating low-pressure outlet 3, a refrigeration low-pressure outlet 4, a high-pressure inlet 5 and a high-pressure outlet 6, the heat exchange core 1 is internally provided with a straight-through flow channel 18, a heat exchange flow channel and a high-pressure flow channel, the straight-through flow channel 18 is communicated between the low-pressure inlet 2 and the heating low-pressure outlet 3 along a first direction, and the heat exchange flow channel is communicated between the straight-through flow channel 18 and the refrigeration low-pressure outlet 4.

[0037] The straight-through flow channel 18 and the heat exchange flow channel are isolated from the high-pressure flow channel, the heat exchange flow channel is in heat contact with the high-pressure flow channel, the heating low-pressure outlet 3 is used for flowing out of the low-pressure refrigerant in the air conditioner heating mode, and the refrigeration low-pressure outlet 4 is used for flowing out of the low-pressure refrigerant in the air conditioner refrigeration mode.

[0038] Specifically, as shown in the figure, Figure 7 The high-pressure refrigerant of the air conditioner flows in from the high-pressure inlet 5, flows through the high-pressure flow channel and flows out from the high-pressure outlet 6. As shown in the figure, Figure 5 In the air conditioner heating mode, since the straight-through flow channel 18 is communicated between the low-pressure inlet 2 and the heating low-pressure outlet 3 in the first direction, the straight-through flow channel is in a straight-through structure, therefore, after the low-pressure refrigerant flows in from the low-pressure inlet 2, most of the low-pressure refrigerant can flow into the straight-through flow channel 18 in the first direction, only a small part of the low-pressure refrigerant flows into the heat exchange flow channel to exchange heat with the high-pressure refrigerant in the high-pressure flow channel, and finally flows out from the heating low-pressure outlet 3, so that the heat exchange amount between the low-pressure refrigerant and the high-pressure refrigerant is small, to meet the required heat exchange demand in the air conditioner heating mode.

[0039] The straight-through flow channel 18 has small resistance to the low-pressure refrigerant, small pressure drop of the low-pressure refrigerant and small influence on the air conditioner system.

[0040] In the air conditioner refrigeration mode, as shown in the figure, Figure 6 Since the heat exchange flow channel is communicated between the straight-through flow channel 18 and the refrigeration low-pressure outlet 4, and the refrigeration low-pressure outlet 4 is communicated with the low-pressure inlet 2 through the straight-through flow channel 18 and the heat exchange flow channel, the low-pressure refrigerant flowing in from the low-pressure inlet 2 will flow through the heat exchange flow channel and exchange heat with the high-pressure refrigerant in the high-pressure flow channel, and finally flow out from the refrigeration low-pressure outlet 4.

[0041] Therefore, the low-pressure refrigerant has two flow paths in the air conditioner refrigeration mode and the air conditioner heating mode, in the air conditioner refrigeration mode, the low-pressure refrigerant can flow through the second flow channel, so that more low-pressure refrigerant exchanges heat with the high-pressure refrigerant in the high-pressure flow channel, to meet different heat exchange demands in the air conditioner refrigeration mode and the air conditioner heating mode, and improve the performance of the air conditioner system.

[0042] Moreover, for the φ29*500 sleeve type regenerator, under the same heat exchange requirement, the plate type regenerator is 69*69*27, and the volume is reduced by about 60%, therefore, the plate type regenerator has smaller volume, can save occupied space, is convenient to arrange and is conducive to integrated design.

[0043] It should be noted that the "low pressure" and "high pressure" mentioned in the utility model are only relative relations, and there is no actual numerical range limitation.

[0044] The plate heat regenerator has two flow paths for low-pressure refrigerant in air-conditioning refrigeration mode and air-conditioning heating mode, and in the air-conditioning heating mode, most of the low-pressure refrigerant flows through the straight flow channel 18 in the first direction after flowing into the low-pressure inlet 2, and only a small part of the low-pressure refrigerant flows into the heat exchange flow channel to exchange heat with the high-pressure refrigerant in the high-pressure flow channel, and finally flows out from the heating low-pressure outlet 3. In the air-conditioning refrigeration mode, the low-pressure refrigerant flowing into the low-pressure inlet 2 flows through the second flow channel to flow out from the refrigeration low-pressure outlet 4, so that more low-pressure refrigerant exchanges heat with the high-pressure refrigerant in the high-pressure flow channel, so as to meet the different heat exchange requirements in the air-conditioning refrigeration mode and the air-conditioning heating mode, and improve the performance of the air-conditioning system.

[0045] In an embodiment, the opening sizes of the low-pressure inlet 2, the heating low-pressure outlet 3 and the refrigeration low-pressure outlet 4 are greater than the opening sizes of the high-pressure inlet 5 and the high-pressure outlet 6.

[0046] In an embodiment, as shown in Figure 4 and Figure 5 , the heat exchange core 1 is formed by stacking a plurality of chips in the first direction, and the adjacent two chips are connected at the edges and spaced apart in the middle to form the first single-layer flow channel 19 between them, and all the first single-layer flow channels 19 are sequentially connected to form the heat exchange flow channel.

[0047] A first through hole 14 is arranged on each chip and penetrates in the first direction, and all the first through holes 14 are sequentially connected in the first direction to form the straight flow channel 18.

[0048] The heat exchange core 1 formed by sequentially stacking a plurality of chips has a simple structure and is easy to install.

[0049] In an embodiment, as shown in Figure 5 and Figure 6 , the cross-sectional area of the first through hole 14 on one of the adjacent two chips is greater than or smaller than the cross-sectional area of the first through hole 14 on the other chip.

[0050] The shapes of the first through holes 14 on the respective chips are different, so that the low-pressure refrigerant flowing through the respective first through holes 14 is subjected to resistance, the resistance along the straight flow channel 18 is increased, and the part of the low-pressure refrigerant in the straight flow channel 18 flows to the heat exchange flow channel to exchange heat with the high-pressure refrigerant in the high-pressure flow channel, which is beneficial to guarantee the heat exchange amount in the air-conditioning heating mode.

[0051] In an embodiment, the centers of the two first through holes 14 in two adjacent chips are offset to set the position difference of the first through holes 14 on each chip, so that the low-pressure refrigerant flowing through each first through hole 14 can be subjected to resistance, which is conducive to the flow of part of the low-pressure refrigerant in the straight-through flow channel 18 to the heat exchange flow channel to exchange heat with the high-pressure refrigerant in the high-pressure flow channel, thereby ensuring the heat exchange amount in the heating mode of the air conditioner.

[0052] In an embodiment, the cross-sectional area of the low-pressure inlet 2 is greater than or less than the cross-sectional area of the first through hole 14 on the adjacent chip, so that the low-pressure refrigerant flowing from the low-pressure inlet 2 to the straight-through flow channel 18 is subjected to resistance, which is conducive to the flow of part of the low-pressure refrigerant in the straight-through flow channel 18 to the heat exchange flow channel to exchange heat with the high-pressure refrigerant in the high-pressure flow channel, thereby increasing the heat exchange amount and meeting the working condition requirements in the heating mode of the air conditioner.

[0053] In an embodiment, the cross-sectional area of the low-pressure inlet 2 is greater than or less than the cross-sectional area of the first through hole 14 on the adjacent chip, so that the low-pressure refrigerant flowing from the low-pressure inlet 2 to the straight-through flow channel 18 is subjected to resistance, which is conducive to the flow of part of the low-pressure refrigerant in the straight-through flow channel 18 to the heat exchange flow channel to exchange heat with the high-pressure refrigerant in the high-pressure flow channel, thereby increasing the heat exchange amount and meeting the working condition requirements in the heating mode of the air conditioner.

[0054] In an embodiment, the first through hole 14, the low-pressure inlet 2, and the heating low-pressure outlet 3 are circular, and the center lines of the first through hole 14, the low-pressure inlet 2, and the heating low-pressure outlet 3 extend along the first direction. The cross-sectional area of the low-pressure inlet 2 is less than the cross-sectional area of the heating low-pressure outlet 3, and the low-pressure inlet 2 is eccentrically arranged with the first through hole 14 on the adjacent chip.

[0055] In an embodiment, as shown in Figure 4 , the plurality of chips are divided into top chips 11, middle chips 12, and bottom chips 13, the top chips 11 are located at the top of the heat exchange core 1, and the bottom chips 13 are located at the bottom of the heat exchange core 1.

[0056] The bottom chip 13 and the middle chip 12 are provided with a second through hole 15 penetrating along the first direction, each first single-layer flow channel 19 communicates with adjacent second through holes 15, and the second through hole 15 on the bottom chip 13 communicates with the refrigeration low-pressure outlet 4.

[0057] In an embodiment, two middle chips 12 are provided. Of course, when designing the plate-type regenerator, the number of middle chips 12 can be adjusted according to the heat exchange requirements.

[0058] In an embodiment, as shown in Figure 4 and Figure 7 , the middle chip 12 is provided with a second single-layer flow channel 123, and the second single-layer flow channel 123 is isolated from the first single-layer flow channel 19.

[0059] Both the bottom chip 13 and the intermediate chip 12 are provided with a third through hole 16 and a fourth through hole 17 that extend along the first direction. The third through hole 16 on the bottom chip 13 is connected to the high-pressure inlet 5, and the fourth through hole 17 on the bottom chip 13 is connected to the high-pressure outlet 6. All the second single-layer flow channels 123 are connected in sequence through the third through hole 16 and the fourth through hole 17 to form a high-pressure flow channel.

[0060] The first single-layer flow channel 19 and the second single-layer flow channel 123 are alternately arranged along the first direction, so that the heat transfer area of ​​the heat exchange flow channel and the high-pressure flow channel is large, which is conducive to the heat exchange between low-pressure refrigerant and high-pressure refrigerant and improves the heat exchange efficiency.

[0061] In one embodiment, such as Figure 6 As shown, a turbulence structure 10 is provided in the first single-layer flow channel 19. The low-pressure refrigerant forms turbulence at the turbulence structure 10, which improves the heat exchange efficiency.

[0062] In one embodiment, the turbulence structure 10 is a fin.

[0063] In other embodiments, the turbulence structure 10 can be a boss, which causes the refrigerant to change direction and speed when flowing through the turbulence structure 10.

[0064] In one embodiment, such as Figure 4 and Figure 7 As shown, the bottom chip 13 is bent towards the middle chip 12 at the position of the third through hole 16 to form a first partition. The two side surfaces of the middle chip 12 at the position of the third through hole 16 protrude outward to form a second protrusion. The first protrusion on the bottom chip 13 abuts against the second protrusion of the adjacent middle chip 12, and the second protrusion of the middle chip 12 adjacent to the top chip 11 abuts against the bottom surface of the top chip 11, so that the third through hole 16 and the fourth through hole 17 are isolated from the first single-layer flow channel 19.

[0065] In one embodiment, such as Figure 4 and Figure 7 As shown, the intermediate chip 12 includes a first sub-chip 121 and a second sub-chip 122, with the edge of the first sub-chip 121 connecting to the edge of the second sub-chip 122. The second sub-chip 122 includes a flat portion and a bent portion. The flat portion is attached to the bottom surface of the first sub-chip 121, and the bent portion is bent away from the first sub-chip 121 to form a second single-layer flow channel 123 between the first sub-chip 121 and the second chip 122. The third through-hole 16 and the fourth through-hole both penetrate the first sub-chip 121 and the bent portion, and the first through-hole 14 and the second through-hole 15 both pass through the first sub-chip 121 and the flat portion.

[0066] In one embodiment, such as Figure 2As shown, the refrigeration low-pressure outlet 4, the low-pressure inlet 2, the high-pressure inlet 5 and the high-pressure outlet 6 are located on the same side of the heat exchange core 1 and arranged in a quadrangle, the high-pressure inlet 5 and the high-pressure outlet 6 are on one diagonal line, the low-pressure inlet 2 and the refrigeration low-pressure outlet 4 are on the other diagonal line, and the low-pressure inlet 2 and the heating low-pressure outlet 3 are arranged in a direct opposite manner along the first direction, so as to increase the distance between the high-pressure inlet 5 and the high-pressure outlet 6 and the distance between the low-pressure inlet 2 and the refrigeration low-pressure outlet 4, facilitate the layout of the heat exchange flow channel and the high-pressure flow channel with a longer path, and increase the heat exchange amount between the low-pressure refrigerant flowing through the heat exchange flow channel and the high-pressure refrigerant in the high-pressure flow channel.

[0067] In an embodiment, as shown in Figure 4 The plate heat exchanger further comprises a top plate 7 and a bottom plate 8, the top plate 7 is fixed on the top of the heat exchange core 1, and the bottom plate 8 is fixed on the bottom of the heat exchange core 1, the bottom plate 8 is used to be fixed in the engine compartment, and the heating low-pressure outlet 3, the refrigeration low-pressure outlet 4, the low-pressure inlet 2, the high-pressure inlet 5 and the high-pressure outlet 6 are arranged on the top plate 7 and the bottom plate 8, so as to improve the structural strength of the plate heat exchanger.

[0068] In an embodiment, the heating low-pressure outlet 3 is arranged on the top plate 7, and the refrigeration low-pressure outlet 4, the low-pressure inlet 2, the high-pressure inlet 5 and the high-pressure outlet 6 are arranged on the bottom plate 8.

[0069] In an embodiment, as shown in Figure 4 and Figure 5 The plate heat exchanger further comprises a heat insulation plate 9, the periphery of the heat insulation plate 9 is attached to the plate surface of the top plate 7 away from the heat exchange core 1, and the middle part of the heat insulation plate 9 is bent away from the heat exchange core 1, so as to form a heat insulation cavity between the heat insulation plate 9 and the top plate 7.

[0070] The plate heat exchanger is installed in the engine compartment of a vehicle, and will be subjected to strong convection heat exchange and radiation heat exchange from the outside, which will cause the performance of the air conditioning system to decrease, especially for vehicles with engines. The arrangement of the heat insulation plate 9 can solve this problem. The atmosphere in the heat insulation cavity is in a vacuum or air state, which can prolong the radiation and convection heat transfer path, reduce the influence of the interference of the environment on the plate heat exchange, and improve the stability of the vehicle air conditioning system.

[0071] In other embodiments, the heat exchange flow channel can be a continuous curved flow channel integrally formed in the heat exchange core 1.

[0072] In other embodiments, the cross-sectional areas of the first through holes 14 on the adjacent two chips can be the same, at this time, a hollow structure can be arranged in the first through hole 14 to increase the resistance in the straight-through flow channel 18.

[0073] In other embodiments, the cross-sectional shape of the low-pressure inlet 2 can be the same as the cross-sectional shape of the heating low-pressure outlet 3.

[0074] In other embodiments, the low-pressure inlet 2 can be arranged at one side of the heat exchange core 1 along the first direction, and the heating low-pressure outlet 3, the refrigerating low-pressure outlet 4, the high-pressure inlet 5 and the high-pressure outlet 6 can be arranged at the other side of the heat exchange core 1 along the first direction.

[0075] In addition, the utility model discloses an embodiment provides a kind of vehicle air conditioning system, compressor, condenser, evaporator, circulation pipeline and the plate-type regenerator of any one embodiment described above, compressor, condenser, evaporator and plate-type regenerator are connected by circulation pipeline, compressor compression work, to obtain high-pressure refrigerant, high-temperature refrigerant flows through condenser, and then, from high-pressure inlet 5 into high-pressure flow channel and from high-pressure outlet 6, after releasing heat at evaporator, low-pressure refrigerant flows out, low-pressure refrigerant flows into heat exchange core 1 from low-pressure inlet 2, and selectively flows out from refrigerating low-pressure outlet 4 and heating low-pressure outlet 3.

[0076] In an embodiment, it further includes first valve and second valve, first valve is installed in heating low-pressure outlet 3, and second valve is installed in refrigerating low-pressure outlet 4, in air conditioning heating mode, first valve opens, and second valve closes;In air conditioning refrigeration mode, first valve closes, and second valve opens.

[0077] In addition, the utility model discloses an embodiment provides a kind of vehicle, including the vehicle air conditioning system of any one embodiment described above.

[0078] The above only is the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement etc. within the spirit and principle of the utility model are included in the protection scope of the utility model.

Claims

1. A plate-type recuperator, characterized by The heat exchange core (1) is formed by stacking a plurality of chips along the first direction, and the first through holes (14) are arranged on each chip and penetrate along the first direction. The first through holes (14) on one of the two adjacent chips have a cross-sectional area greater than or smaller than the first through holes (14) on the other chip.

2. The plate-type recuperator according to claim 1, characterized in that The first through holes (14) on the two adjacent chips are arranged in a center offset manner. The low-pressure inlet (2) has a cross-sectional area greater than or smaller than the first through holes (14) on the adjacent chip.

3. The plate-type recuperator according to claim 2, characterized in that The heating low-pressure outlet (3) has a cross-sectional area greater than or smaller than the low-pressure inlet (2).

4. The plate-type recuperator according to claim 2, characterized in that The plurality of chips are divided into top chips (11), intermediate chips (12), and bottom chips (13), the top chips (11) are located at the top of the heat exchange core (1), and the bottom chips (13) are located at the bottom of the heat exchange core (1).

5. The plate-type recuperator according to claim 2, characterized in that The second through holes (15) are arranged on the bottom chip (13) and the intermediate chip (12) and penetrate along the first direction, each first single-layer flow channel (19) is communicated with adjacent second through holes (15), and the second through holes (15) on the bottom chip (13) are communicated with the refrigeration low-pressure outlet (4).

6. The plate-type recuperator according to claim 2, characterized in that The intermediate chip (12) is provided with a second single-layer flow channel (123), and the second single-layer flow channel (123) is isolated from the first single-layer flow channel (19).

7. The plate-type recuperator according to claim 2, characterized in that ​ ​ 8. The plate-type recuperator according to claim 7, characterized in that ​ The bottom chip (13) and the middle chip (12) are provided with third through holes (16) and fourth through holes (17) penetrating along the first direction, the third through holes (16) on the bottom chip (13) are communicated with the high-pressure inlet (5), the fourth through holes (17) on the bottom chip (13) are communicated with the high-pressure outlet (6), and all the second single-layer flow channels (123) are sequentially communicated through the third through holes (16) and the fourth through holes (17) to form the high-pressure flow channel.

9. The plate-type recuperator according to claim 2, characterized in that The refrigeration low-pressure outlet (4), the low-pressure inlet (2), the high-pressure inlet (5) and the high-pressure outlet (6) are located on the same side of the heat exchange core (1) and arranged in a quadrangle, the high-pressure inlet (5) and the high-pressure outlet (6) are on one diagonal line, the low-pressure inlet (2) and the refrigeration low-pressure outlet (4) are on the other diagonal line, and the low-pressure inlet (2) and the heating low-pressure outlet (3) are oppositely arranged along the first direction.

10. The plate-type recuperator according to any one of claims 1 to 9, characterized in that, The heat exchange core (1) further comprises a top plate (7) and a bottom plate (8), the top plate (7) is fixed on the top of the heat exchange core (1), the bottom plate (8) is fixed on the bottom of the heat exchange core (1), and the heating low-pressure outlet (3), the refrigeration low-pressure outlet (4), the low-pressure inlet (2), the high-pressure inlet (5) and the high-pressure outlet (6) are arranged on the top plate (7) and the bottom plate (8).

11. The plate-type recuperator according to claim 10, characterized in that The heat exchange core (1) further comprises a heat insulation plate (9), the periphery of the heat insulation plate (9) is attached to the plate surface of the top plate (7) away from the heat exchange core (1), and the middle part of the heat insulation plate (9) is bent away from the heat exchange core (1) to form a heat insulation cavity between the heat insulation plate (9) and the top plate (7).

12. A vehicle air conditioning system characterised in that, The vehicle air conditioning system comprises a compression pump, a condenser, an evaporator, a circulating pipeline and the plate heat exchanger according to any one of claims 1 to 11, the compression pump, the condenser, the evaporator and the plate heat exchanger are connected through the circulating pipeline, high-pressure refrigerant pumped by the compression pump flows through the condenser, and then flows into the high-pressure flow channel from the high-pressure inlet (5), and low-pressure refrigerant flowing out of the evaporator flows into the heat exchange core (1) from the low-pressure inlet (2), and then selectively flows out from the refrigeration low-pressure outlet (4) and the heating low-pressure outlet (3).

13. The vehicle air conditioning system of claim 12, wherein, The heat exchange core (1) further comprises a first valve and a second valve, the first valve is installed on the heating low-pressure outlet (3), the second valve is installed on the refrigeration low-pressure outlet (4), in the air conditioning heating mode, the first valve is opened, and the second valve is closed; in the air conditioning refrigeration mode, the first valve is closed, and the second valve is opened.

14. A vehicle characterized by comprising: The vehicle air conditioning system comprises the vehicle air conditioning system according to claim 12 or 13.

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