Automobile air conditioning box and automobile heat pump system

Abstract

The invention relates to the technical field of automobile heat management, in particular to an automobile air conditioning box. The automobile air conditioning box comprises an air mixing box body, a circulating air box body, a fresh air box body, a warm air core body and a cold air core body. A cold air circulating air duct and a warm air circulating air duct are arranged in the circulating air box body, and a cold air circulating air inlet and a warm air circulating air inlet are formed in the sides, close to the passenger compartment, of the cold air circulating air duct and the warm air circulating air duct respectively; a cold air duct and a warm air duct are arranged in the air mixing box body, and a cold air outlet and a warm air outlet are formed in the sides, close to the passenger compartment, of the cold air duct and the warm air duct correspondingly; a cold air and fresh air inlet and a warm air and fresh air inlet are formed in the side, away from the passenger compartment, of the fresh air box body. And the cold air core body and the warm air core body are respectively arranged in the cold air duct and the warm air duct. According to the automobile air conditioning box and the automobile heat pump system, the problem that an existing heat pump system structure can compress the space of a passenger compartment, and the heat exchange performance of the passenger compartment is affected is solved.

Description

Technical Field

[0001] The present application relates to the field of automobile thermal management technology, and in particular to an automobile air conditioning box and an automobile heat pump system. Background Art

[0002] With the continuous development of the automotive industry, thermal management technology has been continuously iterating, and the selection of refrigerants has gradually transitioned from traditional R134a and R1234yf to new refrigerants such as CO2 and R290. Since the refrigeration performance of R290 refrigerant is comparable to that of traditional refrigerants and its heating performance is better, and it is both environmentally friendly, economical and energy-saving, it is a high-probability trend that R290 refrigerant will gradually replace traditional refrigerants and become the mainstream refrigerant. However, due to its flammable and explosive properties, it will pose a safety hazard when entering the passenger compartment, and the secondary loop architecture is a thermal system architecture that adapts to this new refrigerant. The secondary loop architecture places all the refrigerant circulation loops outside the passenger compartment, and heats and cools the coolant through a heat exchanger. Only the heated and cooled coolant enters the passenger compartment to exchange heat with the air.

[0003] Although the system architecture is constantly being updated, the form of the air-conditioning box still maintains the conventional automobile air-conditioning box layout. For conventional automobile air-conditioning boxes, there are at least two heat exchange cores for cooling and heating, and both heat exchange cores are arranged inside the passenger compartment. However, since the space inside the passenger compartment is usually very compact, this limits the size and layout of the heat exchange core, which can easily lead to insufficient heat exchange performance or uneven flow field inside the air-conditioning box, resulting in high resistance.

[0004] In addition, conventional heat pump system architectures have external radiators for heat exchange with the outside world. However, the existence of the external radiator makes the system architecture redundant, and the components are spaced far apart, which increases the losses along the way and affects the heat exchange performance of the passenger compartment. Moreover, the existence of the external radiator makes the conventional heat pump system architecture larger, which also compresses the space in the passenger compartment. Summary of the invention

[0005] The purpose of the present application is to provide an automobile air-conditioning box and an automobile heat pump system, thereby solving the problem that the existing heat pump system architecture will compress the space of the passenger compartment and affect the heat exchange performance of the passenger compartment.

[0006] According to a first aspect of the present application, a car air-conditioning box is provided, wherein the car air-conditioning box is arranged in a front cabin of the car, and the car air-conditioning box comprises a mixing air box body, a circulating air box body, a fresh air box body, a warm air core body and a cold air core body; the mixing air box body and the circulating air box body are stacked in a first direction; the circulating air box body is internally provided with a cold air circulation duct and a warm air circulation duct arranged along a second direction, and the cold air circulation duct and the warm air circulation duct are respectively provided with a cold air circulation inlet and a warm air circulation inlet on a side close to the passenger compartment, and the first direction is perpendicular to the second direction; the mixing air box body is internally provided with a cold air duct and a warm air duct arranged along the second direction, and the cold air duct and the warm air duct are respectively provided with a cold air outlet and a warm air outlet on a side close to the passenger compartment, and the cold air circulation duct and the warm air circulation duct have openings on a side away from the passenger compartment that are respectively connected to the far side of the cold air duct and the warm air duct The cool air duct and the warm air duct are connected to each other through the cool air inlet and the warm air inlet, and the cool air duct and the warm air duct are connected to each other through the cool air inlet and the warm air inlet, respectively.

[0007] In any of the above technical schemes, further, the fresh air box body of the mixing air box and the circulating air box body form an integrated structure; the side openings of the cold air circulation duct and the warm air circulation duct of the circulating air box body away from the passenger compartment are respectively connected to the cold air fresh air duct and the warm air fresh air duct; and / or, the interiors of the cold air fresh air duct and the warm air fresh air duct are respectively provided with cold air side filters and warm air side filters.

[0008] In any of the above technical schemes, further, the automobile air-conditioning box also includes a cold air exhaust box body and a warm air exhaust box body; the cold air exhaust box body and the warm air exhaust box body are respectively provided with a cold air exhaust duct and a warm air exhaust duct, and the cold air exhaust duct and the warm air exhaust duct are respectively connected with the cold air duct and the warm air duct; in the first state, the fresh air on the warm air side can enter the warm air duct through the warm air inlet, pass through the warm air core in the warm air duct, and be discharged to the outside of the vehicle by the warm air exhaust duct.

[0009] In any of the above technical schemes, further, in the second state, fresh air on the warm air side can enter the warm air fresh air duct from the warm air fresh air inlet, pass through the warm air core in the warm air duct, and enter the passenger compartment from the warm air outlet; fresh air on the cold air side can enter the cold air fresh air duct from the cold air fresh air inlet, pass through the cold air core in the cold air duct, and be discharged to the outside of the vehicle through the cold air exhaust duct.

[0010] In any of the above technical schemes, further, the automobile air-conditioning box also includes a cold air fresh air door, a warm air fresh air door, a cold air circulation door, a warm air circulation door, a cold air external air exchange door and a warm air external air exchange door; the cold air fresh air door and the warm air fresh air door are respectively arranged at the cold air fresh air inlet and the warm air fresh air inlet; the cold air circulation door and the warm air circulation door are respectively arranged at the cold air circulation inlet and the warm air circulation inlet; the cold air external air exchange door and the warm air external air exchange door are respectively arranged at the cold air exhaust duct and the warm air exhaust duct; in the first state, the cold air circulation door, the warm air fresh air door and the warm air external air exchange door are opened; in the second state, the cold air fresh air door, the warm air fresh air door and the cold air external air exchange door are opened.

[0011] In any of the above technical schemes, further, the automobile air-conditioning box also includes a first adjusting damper; a middle partition is arranged between the cold air duct and the warm air duct, and the middle partition is provided with a middle channel; the cold air core and the warm air core are arranged at intervals in a third direction, the warm air core is closer to the passenger compartment than the cold air core, and the third direction is perpendicular to the second direction and the first direction respectively; the first adjusting damper can adjust the flow rate of the cold air duct entering the warm air duct through the middle channel; in a third state, the cold air fresh air damper is opened, and the cold air side fresh air can enter the cold air fresh air duct from the cold air fresh air inlet, and after passing through the cold air core in the cold air duct, one way enters the passenger compartment through the cold air outlet, and the other way enters the warm air duct through the middle channel, and the warm air after passing through the warm air core and the cold air from one way enter the passenger compartment together.

[0012] In any of the above technical solutions, further, along the third direction, the first adjusting damper is closer to the passenger compartment relative to the cold air core; the first adjusting damper includes a rotating shaft and a door panel connected to the rotating shaft, the rotating shaft extends along the first direction, and the rotating shaft can drive the door panel to rotate around the rotating shaft to adjust the flow area of ​​the cold air duct.

[0013] In any of the above technical solutions, further, the automobile air-conditioning box also includes a second adjusting damper; a slide is provided on the side of the mixing air box body close to the passenger compartment, and the second adjusting damper is slidably connected to the slide to adjust the air volume of the cold air outlet and the warm air outlet.

[0014] In any of the above technical schemes, further, the automobile air-conditioning box also includes a cold air side fan and a warm air side fan; the air intake of the cold air side fan is connected to the side opening of the cold air circulation duct of the circulating air box body away from the passenger compartment, and the side opening of the cold air fresh air duct of the fresh air box body close to the passenger compartment, so as to suck the cold air from the cold air fresh air duct and the cold air circulation duct into the cold air duct of the mixing air box body; the air intake of the warm air side fan is connected to the side opening of the warm air circulation duct of the circulating air box body away from the passenger compartment, and the side opening of the warm air fresh air duct of the fresh air box body close to the passenger compartment, so as to suck the warm air from the warm air fresh air duct and the warm air circulation duct into the warm air duct of the mixing air box body.

[0015] According to a second aspect of the present application, a vehicle heat pump system is provided, comprising the vehicle air conditioning box as described above.

[0016] According to the above technical features, the beneficial effects of this application are:

[0017] When the automobile air-conditioning box of the present application is in refrigeration cycle, the circulating air on the cold air side enters the cold air circulation duct from the cold air circulation inlet, passes through the cold air core in the cold air duct, and the cold air core absorbs heat to cool down and dehumidify the circulating air on the cold air side, and then enters the passenger compartment from the cold air outlet to cool the cabin. The fresh air on the warm air side enters the warm air duct from the warm air fresh air inlet, passes through the warm air core in the warm air duct, and the warm air core releases heat to heat up the fresh air on the warm air side and discharge it to the outside of the vehicle. In the refrigeration cycle mode of the automobile air-conditioning box of the present application, the cold air core acts as the evaporator in the traditional air-conditioning box, responsible for cooling and dehumidifying; the warm air core acts as the external radiator in the conventional system architecture, responsible for discharging the excess heat generated in the system to the outside of the vehicle.

[0018] In summary, this application cancels the external radiator and moves the warm air core and the cold air core from inside the passenger compartment to outside the passenger compartment. Compared with the prior art, it will not affect the space inside the passenger compartment, and the warm air core and the cold air core can exchange heat with the air entering the passenger compartment and with the outside air, playing the original function of the external radiator. In other words, the warm air core and the cold air core replace the external radiator's function of exchanging heat with the outside air. Therefore, compared with the prior art, it reduces the number of components with duplicate functions and the pipes used to connect them, optimizes the loss of coolant along the way in the system, improves the heat exchange performance, and reduces the cost. Moreover, the integrated automobile air conditioning box can free up more space for the passenger compartment.

[0019] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram showing the overall structure of an automobile air conditioning box according to an embodiment of the present application;

[0022] Figure 2 Show Figure 1 A structural diagram from another perspective;

[0023] Figure 3 A schematic diagram showing the assembly structure of a circulating air box body and a fresh air box body according to an embodiment of the present application;

[0024] Figure 4 A schematic cross-sectional structure diagram of a vehicle air conditioning box in a first position according to an embodiment of the present application is shown;

[0025] Figure 5 A schematic cross-sectional structure diagram of a vehicle air conditioning box in a second position according to an embodiment of the present application is shown;

[0026] Figure 6 A schematic diagram showing a refrigeration cycle of an automobile air conditioning box according to an embodiment of the present application;

[0027] Figure 7 A schematic diagram showing a heating cycle of an automobile air conditioning box according to an embodiment of the present application;

[0028] Figure 8 A schematic diagram showing a refrigeration and dehumidification cycle of an automobile air conditioning box according to an embodiment of the present application;

[0029] Fig. 9 A schematic diagram showing a heating and dehumidification cycle of an automobile air conditioning box according to an embodiment of the present application;

[0030] Fig.10 A schematic diagram showing the structure of a car air conditioning box according to an embodiment of the present application;

[0031] Fig.11 A schematic diagram of the assembly structure of a centrifugal fan according to an embodiment of the present application is shown.

[0032] Icons: 100-mixed air box; 110-cold air duct; 120-warm air duct; 111-cold air outlet; 121-warm air outlet; 200-circulating air box; 210-cold air circulation duct; 220-warm air circulation duct; 211-cold air circulation inlet; 221-warm air circulation inlet; 230-cold air circulation damper; 240-warm air circulation damper; 300-fresh air box; 310-cold fresh air duct; 320-warm fresh air duct; 311-cold fresh air inlet; 32 1-warm air fresh air inlet; 330-cold air fresh air door; 340-warm air fresh air door; 400-cold air core; 500-warm air core; 610-cold air side filter; 620-warm air side filter; 710-cold air exhaust box; 810-warm air exhaust box; 711-cold air exhaust duct; 811-warm air exhaust duct; 830-cold air external air exchange door; 840-warm air external air exchange door; 910-cold air side meridian fan; 920-warm air side meridian fan; 930-cold air side centrifugal fan;

[0033] 1000 - middle partition; 1001 - middle channel; 1100 - first regulating damper; 1200 - second regulating damper; Z - first direction; Y - second direction; X - third direction. DETAILED DESCRIPTION

[0034] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the methods, devices and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but in addition to the operations that must occur in a particular order, changes that will be apparent after understanding the disclosure of the present application may be made. In addition, in order to improve clarity and brevity, descriptions of features known in the art may be omitted.

[0035] The features described herein may be implemented in different forms and should not be interpreted as being limited to the examples described herein. Rather, the examples described herein have been provided only to illustrate some of the many possible ways of implementing the methods, devices and / or systems described herein that will be apparent after understanding the disclosure of the present application.

[0036] Throughout the specification, when an element (such as a layer, a region, or a substrate) is described as being “on”, “connected to”, “bound to”, “over”, or “covering” another element, it may be directly “on”, “connected to”, “bound to”, “over”, or “covering” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on”, “directly connected to”, “directly bound to”, “directly over”, or “directly covering” another element, there may be no other elements present between them.

[0037] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0038] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Therefore, without departing from the teachings of the examples described herein, the first member, component, region, layer, or portion referred to may also be referred to as the second member, component, region, layer, or portion.

[0039] For ease of description, spatial relational terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element will subsequently be "below" or "lower" relative to the other element. Therefore, the term "above" includes both "above" and "below" orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly.

[0040] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprise" and "have" list the stated features, quantities, operations, components, elements and / or their combinations that exist, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.

[0041] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0042] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0043] Before this application was filed, conventional automobile air conditioners had at least two heat exchange cores for cooling and heating, and both heat exchange cores were arranged inside the passenger compartment. However, since the space inside the passenger compartment is usually very compact, this limits the size and layout of the heat exchange cores, which can easily lead to insufficient heat exchange performance or an irregular flow field inside the air conditioner, resulting in high resistance. In addition, conventional heat pump system architectures have external radiators for heat exchange with the outside world, but the presence of the external radiator makes the system architecture redundant, and the components are spaced far apart, which increases the losses along the way and affects the heat exchange performance of the passenger compartment; and the presence of the external radiator makes the conventional heat pump system architecture larger, which also compresses the space in the passenger compartment.

[0044] In view of this, the first aspect of the present application provides a car air conditioning box, thereby solving the above-mentioned technical problems. Figures 1 to 11 The automobile air conditioning box according to some embodiments of the present application is described. For the convenience of description, a first direction Z, a second direction Y and a third direction X which are perpendicular to each other are introduced for description.

[0045] like Figure 1 and Figure 2 As shown, the automobile air-conditioning box of the present application is arranged in the front cabin of the automobile, and the automobile air-conditioning box includes a mixing air box body 100, a circulating air box body 200, a fresh air box body 300, a warm air core body 500 and a cold air core body 400; the mixing air box body 100 and the circulating air box body 200 are stacked in a first direction Z.

[0046] like Figure 1 and Fig.10As shown, the interior of the circulating air box 200 is provided with a cold air circulation duct 210 and a warm air circulation duct 220 arranged along the second direction Y, and the cold air circulation duct 210 and the warm air circulation duct 220 are respectively provided with a cold air circulation inlet 211 and a warm air circulation inlet 221 on the side close to the passenger compartment.

[0047] like Figure 1 and Fig.10 As shown, the interior of the air mixing box 100 is provided with a cold air duct 110 and a warm air duct 120 arranged along the second direction Y, and the cold air duct 110 and the warm air duct 120 are respectively provided with a cold air outlet 111 and a warm air outlet 121 on the side close to the passenger compartment, and the openings of the cold air circulation duct 210 and the warm air circulation duct 220 on the side away from the passenger compartment are respectively connected with the openings of the cold air duct 110 and the warm air duct 120 on the side away from the passenger compartment.

[0048] like Figure 1 , Figure 2 and Fig.10 As shown, the interior of the fresh air box 300 is provided with a cold air duct 310 and a warm air duct 320 arranged along the second direction Y, and the cold air duct 310 and the warm air duct 320 are respectively provided with a cold air inlet 311 and a warm air inlet 321 on the side away from the passenger compartment, and the openings of the cold air duct 310 and the warm air duct 320 on the side close to the passenger compartment are respectively connected to the openings of the cold air duct 110 and the warm air duct 120 on the side away from the passenger compartment. Figure 5 and Fig.10 As shown, the cold air core 400 and the warm air core 500 are respectively disposed inside the cold air duct 110 and the warm air duct 120 .

[0049] When the automobile air-conditioning box of the present application is in a refrigeration cycle, the cold air side circulating air enters the cold air circulation duct 210 from the cold air circulation air inlet 211, passes through the cold air core 400 in the cold air duct 110, and the cold air core 400 absorbs heat to cool down and dehumidify the cold air side circulating air, and then enters the passenger compartment from the cold air outlet 111 to cool the cabin. The warm air side fresh air enters the warm air fresh air duct 320 from the warm air fresh air inlet 321, passes through the warm air core 500 in the warm air duct 120, and the warm air core 500 releases heat to heat up the warm air side fresh air and discharge it outside the vehicle. In the refrigeration cycle mode of the automobile air-conditioning box of the present application, the cold air core 400 acts as an evaporator in a traditional air-conditioning box, responsible for cooling and dehumidifying; the warm air core 500 acts as an external radiator in a conventional system architecture, responsible for discharging excess heat generated in the system to the outside of the vehicle.

[0050] In summary, the present application cancels the external radiator and moves the warm air core 500 and the cold air core 400 from the inside of the passenger compartment to the outside of the passenger compartment. Compared with the prior art, not only will it not affect the space inside the passenger compartment, but the warm air core 500 and the cold air core 400 can exchange heat with the air entering the passenger compartment and with the outside air, thus playing the original function of the external radiator. In other words, the warm air core 500 and the cold air core 400 replace the external radiator's function of exchanging heat with the outside air. Therefore, compared with the prior art, it reduces the number of components with duplicate functions and the pipes used to connect them, optimizes the loss of coolant along the system, improves the heat exchange performance, and reduces the cost. Moreover, the integrated automobile air conditioning box can free up more space for the passenger compartment.

[0051] Further, in the embodiments of the present application, Figure 3 As shown, the mixing air box body, the fresh air box body 300 and the circulating air box body 200 form an integrated structure; the openings on one side of the cold air circulation duct 210 and the warm air circulation duct 220 of the circulating air box body 200 away from the passenger compartment are respectively connected to the cold air fresh air duct 310 and the warm air fresh air duct 320.

[0052] Alternatively, if Figure 4 As shown, a cold air side filter 610 and a warm air side filter 620 are respectively disposed inside the cold air fresh air duct 310 and the warm air fresh air duct 320 .

[0053] Further, in the embodiments of the present application, Figure 1 , Figure 2 and Fig.10 As shown, the automobile air conditioner further includes a cold air exhaust box 710 and a warm air exhaust box 810. The cold air exhaust box 710 and the warm air exhaust box 810 are respectively provided with a cold air exhaust duct 711 and a warm air exhaust duct 811, which are respectively connected to the cold air duct 110 and the warm air duct 120. In the cooling state, the warm air side fresh air can enter the warm air duct 320 through the warm air fresh air inlet 321, pass through the warm air core 500 in the warm air duct 120, and be discharged to the outside of the vehicle through the warm air exhaust duct 811.

[0054] Further, in the embodiments of the present application, Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the automobile air conditioner further includes a cold air door 330, a warm air door 340, a cold air circulation door 230, a warm air circulation door 240, a cold air external air exchange door 830, and a warm air external air exchange door 840. The cold air door 330 and the warm air door 340 are respectively arranged at the cold air inlet 311 and the warm air inlet 321; the cold air circulation door 230 and the warm air circulation door 240 are respectively arranged at the cold air circulation inlet 211 and the warm air circulation inlet 221; the cold air external air exchange door 830 and the warm air external air exchange door 840 are respectively arranged at the cold air exhaust duct 711 and the warm air exhaust duct 811.

[0055] When the automobile air conditioner is in the working condition of circulating air intake, the air in the cabin passes through the cold air circulation air inlet and the warm air circulation air inlet, and the cold air circulation damper 230 and the warm air circulation damper 240 are in the open state. When the automobile air conditioner is in the working condition of fresh air intake, the fresh air passes through the cold air fresh air inlet 311 and the warm air fresh air inlet 321, and the cold air fresh air damper 330 and the warm air fresh air damper 340 are in the open state. When the automobile air conditioner is in the working condition of exhaust, the cold air external exchange damper 830 and the warm air external exchange damper 840 are in the open state. For example, in the cooling state, the cold air circulation damper 230, the warm air fresh air damper 340 and the warm air external exchange damper 840 are open.

[0056] Further, in the embodiments of the present application, Figure 1 and Figure 5 As shown, the automobile air conditioning box also includes a second damper 1200. The front part of the air mixing box 100 near the passenger compartment includes a top wall and a bottom wall opposite to each other in the first direction Z, and two side walls opposite to each other in the second direction Y, and the two side walls are inclined and symmetrically arranged.

[0057] The second regulating damper 1200 can be installed in the hollow cavity between the top wall, the bottom wall and the two side walls. For example, a slideway is provided on the side of the top wall and the bottom wall close to the passenger compartment, and the second regulating damper 1200 is slidably connected to the slideway to adjust the air volume of the cold air outlet 111 and the warm air outlet 121. For example, the slideway is semicircular, and the second regulating damper 1200 is a quarter cylinder (the cylinder can be provided with a hollow weight reduction structure), and the second regulating damper 1200 is slidably connected to the slideway to adjust the flow area of ​​the cold air outlet 111 and the warm air outlet 121, and is adjusted to the full cold, full hot or mixed air position according to the mode requirements.

[0058] In addition, if Figure 1 and Figure 5 As shown, the cold air exhaust box 710 and the warm air exhaust box 810 can be installed on two side walls respectively.

[0059] In addition, the automobile air conditioning box of the present application can use an axial flow fan to ensure the air volume. However, when the air volume requirement is not high but the air pressure requirement is high, it can be replaced with a centrifugal fan to offset more internal resistance or air intake resistance. The choice of the fan can be adjusted between a centrifugal fan, an axial flow fan and a meridian fan according to actual needs.

[0060] like Fig.11 As shown in FIG. 1 , an example of the assembly structure of the cold air side centrifugal fan 930 and the warm air side centrifugal fan is shown. Fig.11 As shown, the air intake port of the cold air side centrifugal fan 930 is connected to a side opening of the cold air circulation duct 210 of the circulating air box 200 away from the passenger compartment, and is connected to a side opening of the cold air fresh air duct 310 of the fresh air box 300 close to the passenger compartment, so as to suck the cold air from the cold air fresh air duct 310 and the cold air circulation duct 210 into the cold air duct 110 of the mixing air box 100.

[0061] Similarly, the air intake port of the centrifugal fan on the warm air side is connected to the opening of the warm air circulation duct 220 of the circulating air box 200 on the side away from the passenger compartment, and is connected to the opening of the warm air fresh air duct 320 of the fresh air box 300 on the side close to the passenger compartment, so as to suck the warm air from the warm air fresh air duct 320 and the warm air circulation duct 220 into the warm air duct 120 of the mixing air box 100.

[0062] like Figure 2 and Figure 5 As shown in the figure, an example of the assembly structure of the cold air side meridian fan 910 and the warm air side meridian fan 920 is shown. The fresh air box 300, the mixed air box 100 and the fan are located on the same layer. Since the automobile air conditioning box incorporates the function of the external radiator, a meridian fan with a larger air volume is used to ensure the external heat exchange, which also increases the air volume entering the passenger compartment, which can meet the increasing air volume requirements of the vehicle manufacturer.

[0063] The flow direction of the automobile air-conditioning box of the present application under the refrigeration cycle and the flow direction under the heating cycle will be described in detail below.

[0064] The flow direction of the automobile air conditioning box under the refrigeration cycle is as follows Figure 6 As shown:

[0065] The cold air side circulating air enters the cold air circulation duct 210 from the cold air circulation air inlet 211, is sucked into the cold air side meridian fan 910, and then passes through the cold air core 400 in the cold air duct 110. The cold air core 400 absorbs heat to cool and dehumidify the cold air side circulating air, and then enters the passenger cabin from the cold air outlet 111 to cool the cabin. The warm air side fresh air enters the warm air fresh air duct 320 from the warm air fresh air inlet 321, is sucked into the warm air side meridian fan 920, and then passes through the warm air core 500 in the warm air duct 120. The warm air core 500 releases heat to increase the temperature of the warm air side fresh air, and is discharged to the outside of the cabin through the cold air exhaust box 710.

[0066] At this time, the first regulating damper 1100 closes the middle channel 1001 (the function of the first regulating damper 1100 will be described below), the second regulating damper 1200 is in the fully open position of the cold air channel, the cold air external exchange damper 830 is in the closed position, and the warm air external exchange damper 840, the warm air fresh air damper 340 and the cold air circulation damper 230 are in the open position. In the refrigeration cycle mode of the automobile air conditioner of the present application, the cold air core 400 plays the role of the evaporator in the traditional air conditioner, responsible for cooling and dehumidification; the warm air core 500 plays the role of the external radiator in the conventional system architecture, responsible for discharging the excess heat generated in the system to the outside of the cabin.

[0067] The flow direction of the automobile air conditioning box in the heating cycle is as follows Figure 7 As shown:

[0068] The warm air enters the warm air duct 320 through the warm air inlet 321, is sucked into the warm air meridian fan 920, and then passes through the warm air core 500 in the warm air duct 120. The warm air core 500 releases heat to increase the temperature of the warm air, and then enters the passenger cabin through the warm air outlet 121 to heat the cabin. The cold air enters the cold air duct 310 through the cold air inlet 311, is sucked into the cold air meridian fan 910, and then passes through the cold air core 400 in the cold air duct 110. The cold air core 400 absorbs heat to cool the cold air, and then is discharged to the outside of the cabin through the cold air exhaust duct 711.

[0069] At this time, the first regulating damper 1100 closes the middle channel 1001, the second regulating damper 1200 is in the fully open position of the warm air channel, the warm air external exchange damper 840 is in the closed position, and the cold air external exchange damper 830, the cold air fresh air damper 330 and the warm air fresh air damper 340 are in the open position. In the heating cycle mode of the automobile air conditioner of the present application, the warm air core 500 plays the role of a heater in a traditional air conditioner, responsible for heating the air; the cold air core 400 plays the role of an external radiator in a conventional system architecture, responsible for absorbing heat from the external environment to improve the heating efficiency.

[0070] Further, in the embodiments of the present application, Figure 5As shown, the automobile air conditioner further includes a first regulating damper 1100. A middle partition 1000 is provided between the cold air duct 110 and the warm air duct 120, and a middle passage 1001 is provided in the middle partition 1000; the cold air core 400 and the warm air core 500 are arranged at intervals in the third direction X, and the warm air core 500 is closer to the passenger compartment than the cold air core 400. The first regulating damper 1100 can regulate the flow of the cold air duct 110 entering the warm air duct 120 through the middle passage 1001, and the first regulating damper 1100 can be freely opened or closed according to the mode requirements.

[0071] As an example, Figure 5 As shown, the first regulating damper 1100 includes a rotating shaft and a door plate connected to the rotating shaft, the rotating shaft extends along the first direction Z, and the rotating shaft can drive the door plate to rotate around the rotating shaft to adjust the flow area of ​​the cold air duct 110. Optionally, the length of the door plate in the third direction X should cover the middle channel 1001, and the rotating shaft can drive the door plate to rotate around the rotating shaft to adjust the distance between the end of the door plate away from the rotating shaft and the inner wall of the cold air duct 110, thereby adjusting the flow area of ​​the cold air duct 110. In the cooling and dehumidification cycle and the heating and dehumidification cycle, the cold air fresh air door 330 is opened, and the fresh air on the cold air side can enter the cold air fresh air duct 310 from the cold air fresh air inlet 311, and after passing through the cold air core 400 in the cold air duct 110, one path enters the passenger compartment through the cold air outlet 111, and the other path enters the warm air duct 120 through the middle channel 1001. The warm air after passing through the warm air core 500 and the cold air on one path enter the passenger compartment together.

[0072] Specifically, the flow direction of the automobile air conditioning box under the refrigeration and dehumidification cycle is as follows: Figure 8 As shown:

[0073] The cold air side fresh air can enter the cold air duct 310 through the cold air fresh air inlet 311, and after being sucked into the cold air side meridian fan 910, it passes through the cold air core 400 in the cold air duct 110. The cold air core 400 absorbs heat to cool down and dehumidify the cold air side fresh air. The wind passing through the cold air core 400 is divided into two routes: the first route does not pass through the middle channel 1001, and enters the passenger compartment through the cold air outlet 111. The wind temperature of this route is relatively low; the second route passes through the middle channel 1001, flows through the warm air core 500, and the warm air core 500 heats the air and flows to the passenger compartment. The wind of this route is heated and the temperature is increased. Finally, the two routes of wind are mixed together and flow into the cabin. At this time, the temperature of the wind entering the cabin is relatively low, which mainly plays the role of cooling and dehumidifying.

[0074] At this time, the first regulating damper 1100 opens the middle channel 1001, the second regulating damper 1200 is in the open position of both channels, the warm air external exchange damper 840, and the cold air external exchange damper 830 are in the closed position. In the refrigeration and dehumidification cycle mode, most of the wind does not pass through the warm air core 500 to flow into the cabin (the flow area of ​​the cold air duct 110 is more than half), and a small part of the wind passes through the warm air core 500 to flow into the cabin, and the overall outlet air temperature is cold. The warm air core 500 acts as a heater in a traditional air conditioning box, responsible for heating the air; the cold air core 400 acts as an evaporator in a traditional air conditioning box, responsible for cooling and dehumidification.

[0075] The flow direction of the automobile air conditioning box in the heating and dehumidification cycle is as follows Fig. 9 As shown:

[0076] The cold air side fresh air can enter the cold air duct 310 through the cold air fresh air inlet 311, and after being sucked into the cold air side meridian fan 910, it passes through the cold air core 400 in the cold air duct 110. The cold air core 400 absorbs heat to cool down and dehumidify the cold air side fresh air. The wind passing through the cold air core 400 is divided into two routes: the first route does not pass through the middle channel 1001, and enters the passenger compartment through the cold air outlet 111. The wind temperature of this route is relatively low; the second route passes through the middle channel 1001, flows through the warm air core 500, and the warm air core 500 heats the air and flows to the passenger compartment. The wind of this route is heated and the temperature is increased. Finally, the two routes of wind are mixed together and flow into the cabin. At this time, the temperature of the wind entering the cabin is relatively high, which mainly plays the role of heating and dehumidification.

[0077] At this time, the first regulating damper 1100 opens the middle channel 1001, the second regulating damper 1200 is in the open position of both channels, and the warm air external exchange damper 840 and the cold air external exchange damper 830 are in the closed position. In the heating and dehumidification cycle mode, most of the wind flows into the cabin through the warm air core 500 (the flow area of ​​the cold air duct 110 is less than half), and a small part of the wind does not flow into the cabin through the warm air core 500, and the overall outlet air temperature is warmer. The warm air core 500 acts as a heater in a traditional air conditioner, responsible for heating the air; the cold air core 400 acts as an evaporator in a traditional air conditioner, responsible for cooling and dehumidifying.

[0078] like Fig.10 As shown, the second aspect of the present application provides an automobile heat pump system, comprising the automobile air-conditioning box as described above.

[0079] The new automobile air conditioning box based on the secondary circuit architecture of the present application is characterized by integration, higher efficiency, lower cost and freeing up more space for the passenger compartment. At the same time, the solution is compatible with the heat pump function and can be applied to various refrigerants.

[0080] On this basis, the automobile air-conditioning box of the present application places the heat exchange core outside the cabin, which greatly reduces the volume of the air-conditioning box in the passenger compartment, allowing the vehicle to have more space in the passenger compartment to arrange various functional parts. At the same time, because the core is arranged outside the cabin, the condensed water generated by the core will be directly discharged outside the cabin, avoiding various electrical failures that may be caused by condensed water.

[0081] On this basis, the automobile air conditioning box of the present application eliminates the external radiator in the conventional system architecture and replaces its function with a warm air core and a cold air core. On the premise of retaining the original system function, it reduces the components with duplicate functions and the pipes used for connection, optimizes the loss of coolant along the system, improves the heat exchange performance, and reduces the cost.

[0082] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that any technician familiar with this technical field can still modify the technical solutions recorded in the aforementioned embodiments within the technical scope disclosed in the present application, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be covered by the protection scope of the present application.

Claims

1. A car air conditioning box, characterized in that: The automobile air conditioning box is arranged in the front cabin of the automobile, and comprises an air mixing box, a circulating air box, a fresh air box, a warm air core and a cold air core; the air mixing box and the circulating air box are stacked in a first direction; The circulating air box is provided with a cold air circulation duct and a warm air circulation duct arranged along a second direction inside, and a cold air circulation air inlet and a warm air circulation air inlet are respectively provided on the side of the cold air circulation duct and the warm air circulation duct close to the passenger compartment, and the first direction is perpendicular to the second direction; The air mixing box is provided with a cold air duct and a warm air duct arranged along the second direction, the cold air duct and the warm air duct are respectively provided with a cold air outlet and a warm air outlet on one side close to the passenger compartment, and the cold air circulation duct and the warm air circulation duct are respectively connected with the cold air duct and the warm air duct on one side away from the passenger compartment; The fresh air box body is provided with a cold air duct and a warm air duct arranged along the second direction, and a cold air inlet and a warm air inlet are respectively provided on the side of the cold air duct and the warm air duct away from the passenger compartment, and the openings on the side of the cold air duct and the warm air duct close to the passenger compartment are respectively communicated with the openings on the side of the cold air duct and the warm air duct away from the passenger compartment; The cold air core and the warm air core are respectively arranged inside the cold air duct and the warm air duct. In a first state, the cold air side circulating air can enter the cold air circulation duct through the cold air circulation inlet, pass through the cold air core in the cold air duct, and enter the passenger compartment through the cold air outlet; the warm air side fresh air can enter the warm air duct through the warm air fresh air inlet, pass through the warm air core in the warm air duct, and be discharged to the outside of the vehicle.

2. The automobile air conditioning box according to claim 1, characterized in that: The fresh air box body of the mixed air box body and the circulating air box body form an integrated structure; The openings of the cold air circulation duct and the warm air circulation duct of the circulating air box body on one side away from the passenger compartment are respectively connected to the cold fresh air duct and the warm fresh air duct; And / or, a cold air side filter and a warm air side filter are respectively disposed inside the cold air fresh air duct and the warm air fresh air duct.

3. The automobile air conditioning box according to claim 1, characterized in that: The automobile air conditioning box also includes a cold air exhaust box body and a warm air exhaust box body; The cold air exhaust box and the warm air exhaust box are respectively provided with a cold air exhaust duct and a warm air exhaust duct inside, and the cold air exhaust duct and the warm air exhaust duct are respectively connected to the cold air duct and the warm air duct; In the first state, the warm air side fresh air can enter the warm air fresh air duct through the warm air fresh air inlet, pass through the warm air core in the warm air duct, and be discharged to the outside of the vehicle through the warm air exhaust duct.

4. The automobile air conditioning box according to claim 3, characterized in that: In the second state, fresh air on the warm air side can enter the warm air duct from the warm air inlet, pass through the warm air core in the warm air duct, and enter the passenger compartment from the warm air outlet; fresh air on the cold air side can enter the cold air duct from the cold air inlet, pass through the cold air core in the cold air duct, and be discharged to the outside of the vehicle through the cold air exhaust duct.

5. The automobile air conditioning box according to claim 4, characterized in that: The automobile air conditioning box also includes a cold air fresh air door, a warm air fresh air door, a cold air circulation door, a warm air circulation door, a cold air external exchange door and a warm air external exchange door; The cold air door and the warm air door are respectively arranged at the cold air inlet and the warm air inlet; The cold air circulation damper and the warm air circulation damper are respectively arranged at the cold air circulation air inlet and the warm air circulation air inlet; The cold air external air exchange door and the warm air external air exchange door are respectively arranged in the cold air exhaust duct and the warm air exhaust duct; In the first state, the cold air circulation damper, the warm air fresh air damper and the warm air external exchange damper are opened; in the second state, the cold air fresh air damper, the warm air fresh air damper and the cold air external exchange damper are opened.

6. The automobile air conditioning box according to claim 5, characterized in that: The automobile air conditioning box also includes a first regulating damper; A middle partition is provided between the cold air duct and the warm air duct, and the middle partition is provided with a middle channel; The cold air core and the warm air core are spaced apart in a third direction, the warm air core is closer to the passenger compartment than the cold air core, and the third direction is perpendicular to the second direction and the first direction respectively; The first regulating damper is capable of regulating the flow rate of the cold air duct entering the warm air duct through the middle channel; In the third state, the cold air fresh air door is opened, and the cold air side fresh air can enter the cold air fresh air duct from the cold air fresh air inlet, and after passing through the cold air core in the cold air duct, enter the passenger compartment through the cold air outlet, and enter the warm air duct through the middle channel in another way. The warm air after passing through the warm air core and the cold air from one way enter the passenger compartment together.

7. The automobile air conditioning box according to claim 6, characterized in that: Along the third direction, the first regulating damper is closer to the passenger compartment than the cold air core; The first regulating damper includes a rotating shaft and a door plate connected to the rotating shaft, the rotating shaft extends along the first direction, and the rotating shaft can drive the door plate to rotate around the rotating shaft to adjust the flow area of ​​the cold air duct.

8. The automobile air conditioning box according to any one of claims 1 to 7, characterized in that: The automobile air conditioning box also includes a second regulating damper; A slide is provided on one side of the air mixing box body close to the passenger compartment, and the second regulating air door is slidably connected to the slide to adjust the air volume of the cold air outlet and the warm air outlet.

9. The automobile air conditioning box according to any one of claims 1 to 7, characterized in that: The automobile air conditioning box also includes a cold air side fan and a warm air side fan; The air suction port of the cold air side fan is connected to an opening of the cold air circulation duct of the circulating air box body away from the passenger compartment, and an opening of the cold air fresh air duct of the fresh air box body close to the passenger compartment, so as to suck the cold air from the cold air fresh air duct and the cold air circulation duct into the cold air duct of the mixing air box body; The air intake of the warm air side fan is connected to an opening on a side of the warm air circulation duct of the circulating air box body away from the passenger compartment, and to an opening on a side of the warm air fresh air duct of the fresh air box body close to the passenger compartment, so as to suck the warm air from the warm air fresh air duct and the warm air circulation duct into the warm air duct of the mixing air box body.

10. An automobile heat pump system, characterized in that: The invention comprises the automobile air conditioning box as claimed in any one of claims 1 to 9.

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