Heat exchange unit and air-conditioning system

Abstract

A heat exchange unit, comprising an air conditioning unit (1) and a heating heat exchanger (2). The air conditioning unit (1) comprises a housing (11), a cooling heat exchanger (12) provided in the housing (11), and a drain pan (13a) connected to the housing (11) and located below the cooling heat exchanger (12), wherein the drain pan (13a) is provided with at least one drainage port (131a); and the air conditioning unit (1) is arranged in an air supply chamber (9) of a vehicle, and the heating heat exchanger (2) is arranged in a channel (T) passing through the drain pan (13a). Further disclosed is an air conditioning system provided with the heat exchange unit. The heat exchange unit is provided with the heating heat exchanger (2) in the channel (T) passing through the drain pan (13a) of the air conditioning unit (1); and by means of the channel (T), condensate is prevented from being generated due to the fact that the surface temperature of the drain pan (13a) at the bottom of the cooling heat exchanger (12) is lower than the ambient temperature, thereby reducing hazards such as corrosion and short circuits caused by the condensate to surrounding components.

Description

Heat exchange unit and air conditioning system Technical Field

[0001] This application relates to the field of automotive air conditioning technology, and more specifically, to a heat exchange unit and an air conditioning system. Background Technology

[0002] The function of a heat exchanger in an air conditioning system is to heat or cool the air flowing through it. The heat exchange capacity of a heat exchanger is directly proportional to the air volume and the heat exchange area. Heat exchangers are divided into refrigeration heat exchangers (cold source) and heating heat exchangers (heat source). Refrigeration heat exchangers generally use evaporators (cooled by refrigerant) or water coolers (cooled by water), while heating heat exchangers generally use warm air cores (heated by coolant) or built-in condensers (heated by refrigerant).

[0003] When cold air passes through the cold source (the core of the refrigeration heat exchanger), condensation occurs, producing condensate. Therefore, a funnel-shaped drainage channel is typically required at the bottom of the refrigeration heat exchanger. Due to heat conduction from the internal low-temperature condensate, the surface temperature of the drip tray at the bottom of the refrigeration heat exchanger is lower than the surrounding temperature, making it prone to condensation. This condensation can cause corrosion and short circuits to surrounding components. Furthermore, the existing funnel-shaped drainage channel results in low space utilization.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] To address the problems in the prior art, the purpose of this application is to provide a heat exchange unit and an air conditioning system. The heat exchange unit has a heating heat exchanger installed in the passage through the water tray of the air conditioning unit, which can reduce or prevent the formation of condensation on the outer surface of the water tray of the air conditioning unit.

[0006] Specifically, the first aspect of this application provides a heat exchange unit, which includes an air conditioning unit and a heating heat exchanger;

[0007] The air conditioning unit includes a shell, a refrigeration heat exchanger disposed inside the shell, and a water receiving tray below the refrigeration heat exchanger connected to the shell, wherein the water receiving tray is provided with at least one drain outlet.

[0008] The air conditioning unit is located inside the air supply cavity of the vehicle, and the heating heat exchanger is located in the channel through the water receiving pan.

[0009] According to a first aspect of this application, the heating heat exchanger is disposed upstream of the water receiving pan.

[0010] According to a first aspect of this application, the heating heat exchanger is disposed downstream of the water receiving pan.

[0011] According to a first aspect of this application, the water receiving tray is funnel-shaped, and the opening of the funnel-shaped water receiving tray faces the refrigeration heat exchanger.

[0012] The water receiving tray is provided with a drain outlet, and the drain outlet is located at the narrow opening of the funnel-shaped water receiving tray.

[0013] According to a first aspect of this application, the water receiving tray has an inclined surface, and a drain outlet is disposed at the bottom of the inclined surface of the water receiving tray.

[0014] According to a first aspect of this application, the middle region of the water receiving tray protrudes from the edge region, and the middle region extends downward to the edge region at an inclined angle, with drain outlets respectively provided on opposite sides of the edge region of the water receiving tray.

[0015] According to a first aspect of this application, at least one drain outlet of the water receiving tray penetrates the cavity of the air supply chamber.

[0016] According to a first aspect of this application, at least one drain outlet of the water receiving tray is disposed within the cavity of the air supply chamber;

[0017] The air supply cavity is equipped with at least one drainage channel.

[0018] According to a first aspect of this application, the refrigeration heat exchanger is an evaporator.

[0019] A second aspect of this application provides an air conditioning system, the air conditioning system including the heat exchange unit described above.

[0020] Compared with the prior art, the heat exchange unit of this application has a heating heat exchanger installed in the passage through the water tray of the air conditioning unit. This ventilation passage prevents condensation from forming because the surface temperature of the water tray at the bottom of the cooling heat exchanger is lower than the ambient temperature, thereby reducing the damage caused by condensation to surrounding components such as corrosion and short circuits. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without inventive effort. Furthermore, the drawings are merely illustrative diagrams of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. Some block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities.

[0022] Figure 1 is a schematic diagram of the heat exchange unit according to the first embodiment of this application;

[0023] Figure 2 is a structural schematic diagram of the air conditioning unit according to the first embodiment of this application;

[0024] Figure 3 is a schematic diagram of the heat exchange unit according to the second embodiment of this application; and

[0025] Figures 4 to 6 are schematic diagrams of the air conditioning unit according to different embodiments of this application. Detailed Implementation

[0026] The following specific examples illustrate the implementation methods of this application. Those skilled in the art can easily understand the other advantages and effects of this application from the content disclosed herein. This application can also be implemented or applied through other different specific embodiments, and various details in this application can be modified or changed according to different viewpoints and application systems without departing from the spirit of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0027] The embodiments of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily implement the application. This application may be embodied in many different forms and is not limited to the embodiments described herein.

[0028] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics represented in connection with that embodiment or example, which are included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate different embodiments or examples represented in this application, as well as features of different embodiments or examples.

[0029] For the purpose of clearly describing this application, devices that are not relevant to the description are omitted, and the same or similar components throughout the specification are given the same reference numerals.

[0030] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0031] When we say that a device is "above" another device, this can mean that it is directly above the other device, or it can mean that other devices are present in between. Conversely, when we say that a device is "directly" "above" another device, there are no other devices present in between.

[0032] Although the terms first, second, etc., are used in some instances herein to refer to various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, first interface and second interface, etc., are used. Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of features, steps, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition will only occur if the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0033] The technical terms used herein are for reference only to specific embodiments and are not intended to limit the scope of this application. The singular form used herein includes the plural form unless the statement explicitly indicates otherwise. The word "comprising" as used in the specification means to specify a particular characteristic, region, integer, step, operation, element, and / or component, and does not exclude the presence or addition of other characteristics, regions, integers, steps, operations, elements, and / or components.

[0034] Although not explicitly defined, all terms, including technical and scientific terms used herein, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. Terms defined in commonly used dictionaries shall be further interpreted as having a meaning consistent with the relevant technical literature and the content of this present application, and shall not be over-interpreted as having an ideal or overly formulaic meaning unless otherwise defined.

[0035] The structure of the heat exchange unit and air conditioning system of this application is further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments are not intended to limit the scope of protection of this application.

[0036] Figure 1 is a structural schematic diagram of the heat exchange unit according to the first embodiment of this application. As shown in Figure 1, the heat exchange unit includes an air conditioning unit 1 and a heating heat exchanger 2. Figure 2 is a structural schematic diagram of the air conditioning unit AA section according to the first embodiment of this application, wherein the air conditioning unit 1 includes a shell 11, a refrigeration heat exchanger 12 disposed within the shell 11, and a water receiving tray 13a below the refrigeration heat exchanger connected to the shell. The water receiving tray is provided with at least one drain outlet 131a. The refrigeration heat exchanger 12 can be an evaporator or a cold air core, etc. The air conditioning unit 1 is disposed within the air supply cavity 9 of the vehicle, and the heating heat exchanger 2 is disposed within the channel T through the water receiving tray.

[0037] In the first embodiment, the heating heat exchanger 2 is located upstream of the water receiving pan 13a. The water receiving pan 13a is funnel-shaped, that is, the cross-section of the water receiving pan 13a is V-shaped or U-shaped. The water receiving pan 13a gradually narrows from top to bottom, with a larger diameter at the upper end, forming an open opening. The open opening of the water receiving pan 13a faces the refrigeration heat exchanger 12 and is used to receive condensate from the bottom of the refrigeration heat exchanger. The water receiving pan 13a is provided with a drain outlet 131a, and the drain outlet 131a is located at the narrow opening of the funnel-shaped water receiving pan 13a, so that the liquid received by the water receiving pan 13a can flow to the drain outlet 131a under the action of gravity.

[0038] Typically, the ventilation channel T is polygonal, such as quadrilateral, on surface AA. In this cross-section, the funnel-shaped cross-section of the water collection tray 13a is smaller than the cross-section of the channel. Therefore, the effective ventilation channel Ta is the space enclosed by the outer periphery of the water collection tray 13a and part of the air supply cavity 9a, as shown in Figure 2. The heat exchange unit of this application is typically located within the air supply cavity 9 of the vehicle. The air inlet of the air supply cavity 9 is equipped with a blower for the vehicle's air conditioning system (not shown in the figure). After the air entering the air supply cavity 9 passes the blower, part of the air passes through the refrigeration heat exchanger 12 in the upper housing of the air conditioning unit 1 within the air supply cavity 9, while the other part (as shown by the dashed arrow in Figure 1) passes through the water collection tray and heating heat exchanger 2 at the lower part of the air conditioning unit 1. The formation of condensation is related to the difference between the surface temperature of the water collection tray 13a and the ambient air temperature. When the surface temperature of the water collection tray 13a is lower than the dew point temperature of the surrounding air, water vapor in the air will condense into water droplets on the surface of the object. The ventilation of the channel Ta allows for continuous airflow, enabling sufficient heat exchange between the outer surface of the water tray 13a and the air in the channel. This brings the surface temperature of the water tray 13a closer to the air temperature inside the channel, thereby reducing water vapor condensation caused by temperature differences. The heat exchange unit of this application has a heating heat exchanger installed in the passageway through the water tray of the air conditioning unit. This ventilation passage prevents condensation from forming on the surface of the water tray at the bottom of the cooling heat exchanger because its temperature is lower than the surrounding temperature. This reduces the risk of corrosion, short circuits, and other damage to surrounding components caused by condensation.

[0039] Figure 3 is a schematic diagram of the heat exchange unit of the second embodiment of this application. In the second embodiment, the heating heat exchanger 2 is located downstream of the water receiving pan. The air conditioning unit therein can adopt the structure of the first embodiment, which will not be described in detail here.

[0040] Figures 4 and 5 are schematic diagrams of the structure of the air conditioning unit AA in different embodiments of this application. In the embodiment of Figure 4, the water receiving tray 13b is provided with two drain outlets 131b. The middle area of ​​the water receiving tray 13b protrudes from the edge area, and the middle area extends downward to the edge area at an inclined angle. The two drain outlets 131b are respectively located on opposite sides of the edge area of ​​the water receiving tray 13b. The effective ventilation channel Tb is the space enclosed by the outer periphery of the water receiving tray 13b and part of the air supply cavity 9b. The cross-section of the ventilation channel Tb is inverted V-shaped.

[0041] In the embodiment shown in Figure 5, the water receiving tray 13c has an inclined surface, and a drain outlet 131c is located at the bottom of the inclined surface of the water receiving tray 13c. The effective ventilation channel Tc is the space enclosed by the outer periphery of the water receiving tray 13c and part of the air supply cavity 9c, and the cross-section of the ventilation channel Tb is triangular.

[0042] In the above embodiment, at least one drain outlet of the water receiving tray of the air conditioning unit penetrates the cavity of the air supply cavity. That is, the liquid received by the water receiving tray 13a is directly discharged into the air supply cavity 9 through the drain outlet. In actual use, under special circumstances, the ventilation channel T can only reduce the generation of condensation water, but a small amount of condensation water will still be formed.

[0043] Figure 6 is a structural schematic diagram of the air conditioning unit AA in cross-section of another embodiment of this application. In this embodiment, the structure of the water receiving tray 13d differs from that in the first embodiment in that the drain outlet 131d of the water receiving tray 13d is disposed within the cavity of the air supply chamber 9d, and the cavity of the air supply chamber 9d is provided with at least one drain channel 91d. The drain channel 91d can be disposed below the drain outlet 131d. The drain channel 91d can discharge liquid generated by the drain outlet 131d and the outer surface of the water receiving tray 13d.

[0044] This application also provides an air conditioning system including the above-mentioned heat exchange unit. In actual use, the heat exchange unit can also control the air volume through the refrigeration heat exchanger and the heating heat exchanger by setting multiple baffles and dampers, so as to meet the different airflow requirements of the heating channel and the refrigeration channel.

[0045] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

[0046] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.

Claims

1. A heat exchange unit, characterized in that, The heat exchange unit includes an air conditioning unit and a heating heat exchanger; The air conditioning unit includes a shell, a refrigeration heat exchanger disposed inside the shell, and a water receiving tray below the refrigeration heat exchanger connected to the shell, wherein the water receiving tray is provided with at least one drain outlet. The air conditioning unit is located inside the air supply cavity of the vehicle, and the heating heat exchanger is located in the channel through the water receiving pan.

2. The heat exchange unit according to claim 1, characterized in that, The heat exchanger is located upstream of the water receiving pan.

3. The heat exchange unit according to claim 1, characterized in that, The heat exchanger is located downstream of the water receiving pan.

4. The heat exchange unit according to claim 1, characterized in that, The water receiving tray is funnel-shaped, and the opening of the funnel-shaped water receiving tray faces the refrigeration heat exchanger. The water receiving tray is provided with a drain outlet, and the drain outlet is located at the narrow opening of the funnel-shaped water receiving tray.

5. The heat exchange unit according to claim 1, characterized in that, The water receiving tray has an inclined surface, and a drain outlet is located at the bottom of the inclined surface of the water receiving tray.

6. The heat exchange unit according to claim 1, characterized in that, The middle area of ​​the water receiving tray protrudes from the edge area, and the middle area extends downward to the edge area at an inclined angle. Drainage outlets are respectively provided on the opposite sides of the edge area of ​​the water receiving tray.

7. The heat exchange unit according to claim 1, characterized in that, At least one drain outlet of the water receiving tray penetrates the cavity of the air supply chamber.

8. The heat exchange unit according to claim 1, characterized in that, At least one drain outlet of the water receiving tray is disposed within the cavity of the air supply chamber; The air supply cavity is equipped with at least one drainage channel.

9. The heat exchange unit according to claim 1, characterized in that, The refrigeration heat exchanger is an evaporator.

10. An air conditioning system, characterized in that, The air conditioning system includes the heat exchange unit as described in any one of claims 1 to 9.

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