Double-temperature-zone air conditioning device and control method thereof

Abstract

The invention provides a double-temperature-zone air conditioning device and a control method thereof.The device comprises an evaporator core and a composite core, the evaporator core and the composite core are sequentially arranged on an airflow channel in an air conditioning box from front to back, and a first partition plate is arranged between the evaporator core and the composite core; the first partition plate is used for dividing an airflow channel between the evaporator core body and the composite core body into a left part and a right part; a second partition plate is arranged at the rear part of the composite core body and is used for dividing the airflow channel at the rear part of the composite core body into a left part and a right part; the composite core body comprises a water heater and a plurality of electric heaters, water heating pipes of the water heater are arranged at intervals from left to right, and the electric heaters and the water heating pipes are arranged in a staggered mode from left to right; the electric heaters located on the left side of the first partition plate and the electric heaters located on the right side of the first partition plate can be independently controlled. The double-temperature-zone function of the air conditioner can be well achieved, a temperature adjusting air door in the prior art is omitted, and space is saved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile parts, and in particular relates to a dual-temperature zone air conditioning device and a control method thereof. Background Art

[0002] Car air conditioners are increasingly focusing on comfort. Dual-zone air conditioners mean that the air outlets on the left and right sides of the air conditioner can be individually controlled in temperature. Specifically, different cold and warm temperatures can be set for the main driver's air outlet and the co-driver's air outlet without affecting each other. With the increasing penetration of new energy vehicles, the dual-zone solution of air conditioners is also constantly changing. Under different thermal management principles, air conditioners need to take into account energy saving, performance, space and other factors to make appropriate choices.

[0003] The existing dual-zone air conditioning device adds a middle partition in its distribution box to divide the distribution box into two symmetrical areas on the left and right. The cold source uses an evaporator, and the heat source uses an electric heater. The temperature of the air outlet on the left and right of the air conditioner is adjusted by a temperature-adjusting damper. Since this structure requires a temperature-adjusting damper to adjust the temperature, a large longitudinal space is required between the evaporator and the electric heater, which makes it occupy a large longitudinal space of the air conditioning box, which is not conducive to the arrangement of other components. Therefore, how to design a dual-zone air conditioning device and its control method to omit the temperature-adjusting damper and better realize the dual-zone function of the air conditioner has become a technical problem that technicians in this field urgently need to solve. Summary of the invention

[0004] The object of the present invention is to provide a dual-temperature zone air conditioner to solve the above technical problems in the prior art. Another object of the present invention is to provide a control method for the dual-temperature zone air conditioner.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A dual-temperature zone air-conditioning device, which includes an evaporator core and a composite core. The evaporator core and the composite core are arranged in sequence from front to back on the air flow channel in the air-conditioning box. A first partition is arranged between the evaporator core and the composite core, and the first partition is used to separate the air flow channel between the evaporator core and the composite core into two left and right parts; a second partition is arranged at the rear of the composite core, and the second partition is used to separate the air flow channel at the rear of the composite core into two left and right parts; the composite core includes a water heater and a plurality of electric heaters, and the water heating pipes of the water heaters are arranged at intervals from left to right, and the electric heaters and the water heating pipes are staggered from left to right; the electric heaters located on the left side of the first partition and the electric heaters located on the right side of the first partition can be controlled separately.

[0007] Preferably, the lower water chamber of the water heater is connected to the water inlet pipe, the upper water chamber of the water heater is connected to the water outlet pipe, and a water valve is provided on the water outlet pipe; the water heating pipe is used to connect the upper water chamber with the lower water chamber.

[0008] Preferably, the first partition plate and the second partition plate are symmetrically arranged on the front and rear sides of the composite core.

[0009] Preferably, a plurality of heat dissipation fins are sequentially arranged between the electric heater and the water heating tube from top to bottom.

[0010] Preferably, the heat dissipation fins are evenly distributed on the outer wall of the water heating tube from top to bottom.

[0011] Preferably, the heat dissipation fins are connected in sequence from top to bottom.

[0012] Preferably, the heat dissipation fins are isosceles triangle structures.

[0013] Preferably, the water heating tube is a flat tube.

[0014] A control method for a dual-temperature zone air conditioner, comprising: when a dual-temperature zone function is required, in a refrigeration condition, closing a water valve on a water outlet pipe so that coolant in an upper water chamber and a lower water chamber does not flow and does not participate in heat exchange;

[0015] If the set temperature of the air outlet on the left side is higher than the set temperature of the air outlet on the right side, each electric heater located on the left side of the first partition is turned on separately to adjust the temperature;

[0016] If the set temperature of the air outlet on the right side is higher than the set temperature of the air outlet on the left side, each electric heater located on the right side of the first partition is turned on separately to adjust the temperature.

[0017] Preferably, it further comprises: when the dual temperature zone function is required, under heating conditions, opening the water valve on the water outlet pipe to allow the coolant in the upper water chamber and the lower water chamber to flow and participate in heat exchange;

[0018] If the set temperature of the air outlet on the left side is higher than the set temperature of the air outlet on the right side, each electric heater located on the left side of the first partition is turned on separately to adjust the temperature;

[0019] If the set temperature of the air outlet on the right side is higher than the set temperature of the air outlet on the left side, each electric heater located on the right side of the first partition is turned on separately to adjust the temperature.

[0020] The beneficial effects of the present invention are:

[0021] The dual-temperature zone air-conditioning device and control method thereof of the present invention have an evaporator core and a composite core. By separately controlling each electric heater located on the left side of the first partition and each electric heater located on the right side of the first partition in the composite core, the dual-temperature zone function of the air-conditioning can be better realized; at the same time, the temperature adjustment damper in the prior art is omitted, saving space, thereby facilitating the arrangement of other components. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the embodiments, and further describe the specific embodiments of the present invention in detail in conjunction with the drawings, wherein

[0023] Figure 1 A schematic diagram of a dual-temperature zone air conditioning device provided by an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of a composite core provided by an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the internal structure of a composite core provided by an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of the circuit connection of the left and right PTC heating plates provided in an embodiment of the present invention.

[0027] Markings in the accompanying drawings:

[0028] 11. air conditioning box, 12. air flow channel; 21. first partition, 22. second partition;

[0029] 31. evaporator core; 41. composite core; 42. lower water chamber; 43. upper water chamber;

[0030] 44. Water outlet pipe, 45. Water valve, 46. Water inlet pipe, 47. Water heating pipe,

[0031] 48. Heat sink fins; 49. PTC heater; 51. Wiring harness. DETAILED DESCRIPTION

[0032] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0033] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0034] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0035] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0036] like Figures 1 to 4 As shown, an embodiment of the present invention provides a dual-temperature zone air-conditioning device, which includes an evaporator core 31 and a composite core 41. The evaporator core 31 and the composite core 41 are arranged in sequence from front to back on the air flow channel 12 in the air-conditioning box 11. A first partition 21 is arranged between the evaporator core and the composite core, and the first partition 21 is used to separate the air flow channel between the evaporator core and the composite core into two left and right parts; a second partition 22 is arranged at the rear of the composite core, and the second partition 22 is used to separate the air flow channel at the rear of the composite core into two left and right parts; the composite core 41 includes a water heater and a plurality of electric heaters, and the water heating pipes 47 of the water heater are arranged at intervals from left to right, and the electric heaters and the water heating pipes 47 are staggered from left to right; the electric heaters located on the left side of the first partition 21 and the electric heaters located on the right side of the first partition 21 can be controlled separately.

[0037] Furthermore, the lower water chamber 42 of the water heater is connected to the water inlet pipe 46, and the upper water chamber 43 of the water heater is connected to the water outlet pipe 44, and the water outlet pipe is provided with a water valve 45; the water heating pipe is used to connect the upper water chamber and the lower water chamber. With this solution, the flow of the coolant in the water heater can be controlled by opening and closing the water valve, thereby controlling whether the water heater participates in heat exchange.

[0038] Specifically, the first baffle 21 and the second baffle 22 are symmetrically arranged at the front and rear sides of the composite core, so as to facilitate the control of the left side air outlet temperature and the right side air outlet temperature of the air conditioner respectively.

[0039] Furthermore, a plurality of heat dissipation fins 48 are arranged in sequence from top to bottom between the electric heater and the water heating pipe 47, so that during heating operation, the electric heater and the water heating pipe can perform more sufficient heat exchange with the air flow passing through them, thereby facilitating control of the air outlet temperature of the air conditioner.

[0040] Preferably, the heat dissipation fins 48 are evenly distributed on the outer wall of the water heating pipe from top to bottom.

[0041] Furthermore, the heat dissipation fins 48 are connected in sequence from top to bottom. It can be understood that the evaporator core is used as a cooling cold source, and the composite core is used as a heating heat source.

[0042] Specifically, the electric heater can be a PTC heater, preferably a high-voltage PTC heater, and each PTC heating plate 49 in each PTC heater is staggered with each water heating pipe from left to right. In other embodiments, the heat dissipation fins can also be evenly distributed on the outer wall of the PTC heating plate.

[0043] Preferably, the heat dissipation fin 48 is an isosceles triangle structure, so as to facilitate heat exchange with the airflow. At this time, the end of the heat dissipation fin away from the water heating pipe can contact the outer wall of the PTC heating plate 49, so as to facilitate heat exchange between the PTC heating plate and the airflow.

[0044] Specifically, the water heating pipe 47 is a flat pipe, so that the water heating pipe can better exchange heat with the airflow.

[0045] The embodiment of the present invention further provides a control method for a dual-temperature zone air conditioner, which comprises: when the dual-temperature zone function is required, in the cooling condition, closing the water valve 45 on the water outlet pipe 44, so that the coolant in the upper water chamber 43 and the lower water chamber 42 does not flow and does not participate in heat exchange, that is, the water heater does not work; at this time, the evaporator core is turned on for cooling;

[0046] If the set temperature of the left air outlet is higher than the set temperature of the right air outlet, each electric heater located on the left side of the first partition 21 is turned on separately to adjust the temperature. At this time, the heating power of each electric heater on the left side can be increased to increase the temperature of the left air outlet, thereby meeting the passenger's demand for the left air outlet temperature.

[0047] If the set temperature of the right air outlet is higher than the set temperature of the left air outlet, the electric heaters located on the right side of the first partition 21 are turned on separately for temperature adjustment. At this time, the heating power of the electric heaters on the right side can be increased to increase the temperature of the right air outlet to meet the passengers' requirements for the right air outlet temperature.

[0048] Furthermore, the control method of the dual-temperature zone air conditioner also includes: when the dual-temperature zone function is required, under the heating condition, the water valve 45 on the water outlet pipe 44 is opened to allow the coolant in the upper water chamber and the lower water chamber to flow and participate in heat exchange, that is, the water heater works; at this time, the evaporator core is closed and does not work;

[0049] If the set temperature of the air outlet on the left side of the air conditioner is higher than the set temperature of the air outlet on the right side, each electric heater located on the left side of the first partition 21 is turned on separately to adjust the temperature;

[0050] If the set temperature of the air outlet on the right side is higher than the set temperature of the air outlet on the left side, each electric heater located on the right side of the first partition plate 21 is turned on separately to adjust the temperature.

[0051] It is understandable that the heating power of the electric heater can be controlled by controlling the current or voltage of the electric heater, thereby adjusting the air outlet temperature of the air conditioner; according to the temperature difference between the set temperature of the air outlet on the left side of the air conditioner and the set temperature of the air outlet on the right side, the heating power of the electric heater on the corresponding side is controlled to meet the temperature adjustment requirements. Figure 4 As shown, each electric heater located on the left side of the first partition 21 can be connected to the same positive electrode, and each electric heater located on the right side of the first partition 21 can be connected to the same positive electrode, so as to facilitate the individual control of each electric heater on the left and right sides. The electric heater is connected to the power supply through the wiring harness 51; Figure 1 The arrow in the figure indicates the direction of airflow; the X direction in the figure indicates the longitudinal direction of the vehicle, that is, the length direction of the vehicle, which is also the front-to-back direction in the text; the Y direction indicates the lateral direction of the vehicle, that is, the width direction of the vehicle, which is also the left-right direction in the text; the Z direction indicates the vertical direction of the vehicle, that is, the height direction of the vehicle, which is also the up-down direction in the text.

[0052] Specifically, the control method when the dual temperature zone function of the air conditioner is not used is as follows:

[0053] In the cooling condition, the evaporator core 31 is working, the water heater and the electric heater are not working, and when the air flows through the evaporator core, it exchanges heat with the evaporator core 31, so that the temperature of the air flow is reduced and becomes cold air, and then when it flows through the composite core, no heat exchange occurs, and then the cold air is blown out from the left and right air outlets;

[0054] Under heating conditions, the evaporator does not work, but the water heater works. At this time, each water heating tube is used to perform heat exchange on the airflow passing through its left and right sides. When the water heater cannot meet the temperature requirements, the electric heaters located on the left and right sides of the first partition 21 can be controlled to start at the same time and maintain the same heating power to better meet the temperature requirements of the occupants during heating. At this time, no heat exchange occurs when the airflow passes through the evaporator core 31. When the airflow passes through the composite core, heat exchange occurs with the water heating tube and the PTC heating sheet, so that the temperature of the airflow increases and becomes warm air, which is then blown out from the left and right air outlets.

[0055] The dual-temperature zone air-conditioning device and control method provided in the embodiment of the present invention have an evaporator core and a composite core. By separately controlling the operation and heating power of each electric heater located on the left side of the first partition and each electric heater located on the right side of the first partition in the composite core 41, the dual-temperature zone function of the air-conditioning can be better realized; at the same time, it omits the temperature control damper in the prior art and instead uses the composite core 41 for temperature control, and the demand for the longitudinal space between the composite core 41 and the evaporator core 31 is relatively small, thereby saving the longitudinal space of the air-conditioning box and facilitating the arrangement of other components.

[0056] The present invention does not require a temperature control damper to participate in temperature control, thus saving the longitudinal space of the air-conditioning box; at the same time, the composite core can be heated not only by an electric heater but also by a water heater, so that it can be better applied to indirect heat pump air-conditioning systems and extended-range vehicle air-conditioning systems, and has stronger applicability.

[0057] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A dual-temperature zone air conditioning device, characterized in that: It includes an evaporator core and a composite core. The evaporator core and the composite core are arranged in sequence from front to back on the air flow channel in the air-conditioning box. A first partition is arranged between the evaporator core and the composite core, and the first partition is used to separate the air flow channel between the evaporator core and the composite core into two left and right parts; a second partition is arranged at the rear of the composite core, and the second partition is used to separate the air flow channel at the rear of the composite core into two left and right parts; the composite core includes a water heater and a plurality of electric heaters, and the water heating pipes of the water heater are arranged at intervals from left to right, and the electric heaters and the water heating pipes are staggered from left to right; the electric heaters located on the left side of the first partition and the electric heaters located on the right side of the first partition can be controlled separately.

2. The dual-zone air conditioning device according to claim 1, characterized in that: The lower water chamber of the water heater is connected to the water inlet pipe, the upper water chamber of the water heater is connected to the water outlet pipe, and a water valve is arranged on the water outlet pipe; the water heating pipe is used to connect the upper water chamber with the lower water chamber.

3. The dual-temperature zone air conditioning device according to claim 1, characterized in that: The first partition plate and the second partition plate are symmetrically arranged on the front and rear sides of the composite core.

4. The dual-zone air conditioning device according to claim 1, characterized in that: A plurality of heat dissipation fins are arranged in sequence from top to bottom between the electric heater and the water heating pipe.

5. The dual-temperature zone air conditioning device according to claim 4, characterized in that: The heat dissipation fins are evenly distributed on the outer wall of the water heating pipe from top to bottom.

6. The dual-zone air conditioning device according to claim 4, characterized in that: The heat dissipation fins are connected in sequence from top to bottom.

7. The dual-zone air conditioning device according to claim 4, characterized in that: The heat dissipation fins are in an isosceles triangle structure.

8. The dual-zone air conditioning device according to any one of claims 1 to 7, characterized in that: The water heating tube is a flat tube.

9. A control method for a dual-temperature zone air conditioning device, characterized in that: It includes: When the dual temperature zone function is required, under refrigeration conditions, close the water valve on the water outlet pipe so that the coolant in the upper and lower water chambers does not flow and does not participate in heat exchange; If the set temperature of the air outlet on the left side is higher than the set temperature of the air outlet on the right side, each electric heater located on the left side of the first partition is turned on separately to adjust the temperature; If the set temperature of the air outlet on the right side is higher than the set temperature of the air outlet on the left side, each electric heater located on the right side of the first partition is turned on separately to adjust the temperature.

10. The control method of the dual-temperature zone air conditioner according to claim 9, characterized in that: It also includes: when the dual temperature zone function is required, under heating conditions, the water valve on the water outlet pipe is opened to allow the coolant in the upper water chamber and the lower water chamber to flow and participate in heat exchange; If the set temperature of the air outlet on the left side is higher than the set temperature of the air outlet on the right side, each electric heater located on the left side of the first partition is turned on separately to adjust the temperature; If the set temperature of the air outlet on the right side is higher than the set temperature of the air outlet on the left side, each electric heater located on the right side of the first partition is turned on separately to adjust the temperature.

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