Vehicle air conditioner integrated with refrigerator

Abstract

The utility model provides integrated vehicle air conditioner of refrigerator, include: a vehicle compressor, a bypass valve, parallel in high pressure side and low pressure side between vehicle compressor, a condenser, the first end intercommunication of condenser high pressure side of vehicle compressor, a refrigerator evaporating line and an air conditioner evaporating line, parallel in the second end of condenser and low pressure side between vehicle compressor, refrigerator evaporating line includes the expansion valve and refrigerator evaporator in series, a first temperature sensor is arranged in the exhaust end of vehicle compressor, and the control end of first temperature sensor is connected expansion valve, and a second temperature sensor is arranged in the refrigerator, and the control end of second temperature sensor is connected bypass valve. The utility model can avoid the frequent start -stop of compressor, improve stability, the oil return lubrication and cooling effect of compressor.

Description

Technical Field

[0001] This utility model relates to the field of vehicle-mounted refrigeration equipment, specifically to a vehicle-mounted air conditioner with an integrated refrigerator. Background Technology

[0002] In existing technologies, in-vehicle refrigerators are separate systems from the vehicle's existing thermal management system. Due to their numerous components and large structural dimensions, they require significant space for vehicle layout, resulting in higher costs for independent in-vehicle refrigerator compressors. Furthermore, the large size of the compressor restricts its placement, and noise levels negatively impact passenger comfort. In particular, when insulating the storage compartment, the compressor of this heat exchange component needs to start frequently, increasing overall vehicle energy consumption and reducing the vehicle's driving range.

[0003] Even if an ultra-low speed (as low as 100 rpm) air conditioning compressor is used as a refrigerator compressor, or if the compressor is controlled to operate frequently and intermittently, the vehicle refrigerator and air conditioning system still have the following problems:

[0004] (1) It is difficult to maintain stable control of the compressor at extremely low speeds;

[0005] (2) Poor oil lubrication inside the compressor when the compressor is running at extremely low speed;

[0006] (3) The compressor's internal cooling effect is poor at extremely low speeds;

[0007] (4) The compressor starts and stops frequently.

[0008] In view of this, the present invention provides a vehicle air conditioner with an integrated refrigerator. Utility Model Content

[0009] In view of the problems in the prior art, this utility model provides a vehicle air conditioner with integrated refrigerator, which overcomes the difficulties of the prior art, can avoid frequent start and stop of the compressor, and improve stability, compressor oil return lubrication and cooling effect.

[0010] An embodiment of this utility model provides a vehicle air conditioner with an integrated refrigerator, comprising:

[0011] A vehicle-mounted compressor;

[0012] A bypass valve is connected in parallel between the high-pressure side and the low-pressure side of the on-board compressor;

[0013] A condenser, the first end of which is connected to the high-pressure side of the vehicle compressor;

[0014] A refrigerator evaporator pipe and an air conditioner evaporator pipe are connected in parallel between the second end of the condenser and the low-pressure side of the vehicle compressor. The refrigerator evaporator pipe includes an electronic expansion valve and a refrigerator evaporator connected in series.

[0015] A first temperature sensor is disposed at the exhaust end of the vehicle compressor, and the first temperature sensor is connected to the control terminal of the electronic expansion valve; and

[0016] A second temperature sensor is installed inside the refrigerator and is connected to the control terminal of the bypass valve.

[0017] Preferably, the electronic expansion valve is located downstream of the condenser, and the electronic expansion valve is located upstream of the refrigerator evaporator.

[0018] Preferably, the air conditioning evaporator pipeline includes a thermostatic expansion valve and an air conditioning evaporator connected in series.

[0019] Preferably, the thermal expansion valve is located downstream of the condenser, and the thermal expansion valve is located upstream of the air conditioner evaporator.

[0020] Preferably, it further includes: a motor and a controller, wherein the motor is connected to the vehicle compressor and the controller respectively.

[0021] Preferably, the bypass valve is configured to adjust its opening based on the difference between the current temperature and the target temperature of the refrigerator to bypass the refrigerant of the on-board compressor.

[0022] Preferably, the electronic expansion valve is configured to adjust its opening degree based on the temperature at the exhaust end of the on-board compressor.

[0023] The integrated refrigerator of this invention can avoid frequent start-stop of the compressor in the vehicle air conditioner, thereby improving stability, compressor oil return lubrication, and cooling effect. Attached Figure Description

[0024] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the piping connection of the integrated refrigerator of this utility model with the vehicle air conditioning system.

[0026] Figure 2 This is a schematic diagram illustrating the steps of the vehicle air conditioning control method for the integrated refrigerator of this utility model.

[0027] Figure Labels

[0028] 1. Vehicle-mounted compressor

[0029] 2. Condenser

[0030] 3. Refrigerator evaporator

[0031] 4. Air conditioner evaporator

[0032] 5 First temperature sensor

[0033] 6 Second temperature sensor

[0034] 7. Bypass valve

[0035] 8. Expansion valve

[0036] 9. Thermal expansion valve

[0037] 10 motors

[0038] 11 Controller

[0039] 12 refrigerators

[0040] 13 Exhaust port Detailed Implementation

[0041] 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.

[0042] 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.

[0043] 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.

[0044] Furthermore, the terms "first" and "second" are used for illustrative purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] Figure 1 This is a schematic diagram of the piping connection for the integrated refrigerator and vehicle air conditioning system of this utility model. Figure 1 As shown, the integrated refrigerator-based vehicle air conditioner of this utility model includes: a vehicle compressor 1, a condenser 2, a refrigerator evaporator pipe, an air conditioner evaporator pipe, a first temperature sensor 5, a second temperature sensor 6, and a bypass valve 7. The bypass valve 7 is connected in parallel between the high-pressure side and the low-pressure side of the vehicle compressor 1. The first end of the condenser 2 is connected to the high-pressure side of the vehicle compressor 1. The refrigerator evaporator pipe and the air conditioner evaporator pipe are connected in parallel between the second end of the condenser 2 and the low-pressure side of the vehicle compressor 1. The refrigerator evaporator pipe includes an expansion valve 8 and a refrigerator evaporator 3 connected in series. The first temperature sensor 5 is located at the exhaust end 13 of the vehicle compressor 1 and is connected to the control end of the expansion valve 8. The second temperature sensor 6 is located inside the refrigerator 12 and is connected to the control end of the bypass valve 7. This invention, by setting a bypass valve 7 and related pipelines based on the vehicle compressor, can adjust the refrigerant flow through the vehicle compressor 1 at all times, avoiding frequent start-stop of the compressor. The minimum speed of the air conditioning compressor is controlled at the commonly used 600 to 1000 rpm, and the stable control is relatively easy. It helps to improve the internal lubrication effect, internal cooling effect and oil return effect of the compressor body.

[0052] In a preferred embodiment, the expansion valve 8 is located downstream of the condenser 2, and upstream of the refrigerator evaporator 3, but is not limited thereto.

[0053] In a preferred embodiment, the air conditioning evaporator pipe includes a thermostatic expansion valve 9 and an air conditioning evaporator 4 connected in series, but is not limited thereto.

[0054] In a preferred embodiment, the thermal expansion valve 9 is located downstream of the condenser 2 and upstream of the air conditioner evaporator 4. The thermal expansion valve controls its opening based on the superheat of the gaseous refrigerant at the evaporator outlet, and is therefore widely used in non-flooded evaporators. Depending on the balancing method, the thermal expansion valve can be classified into internally balanced and externally balanced types, but this is not a limitation.

[0055] In a preferred embodiment, it further includes a motor 10 and a controller 11, wherein the motor 10 is connected to the vehicle compressor 1 and the controller 11 respectively, but is not limited thereto.

[0056] In a preferred embodiment, the bypass valve 7 is configured to adjust its opening based on the difference between the current temperature and the target temperature of the refrigerator 12 to bypass the refrigerant flow of the on-board compressor 1, but is not limited thereto.

[0057] In a preferred embodiment, the expansion valve 8 is configured to adjust its opening based on the temperature of the exhaust end 13 of the on-board compressor 1, but is not limited thereto.

[0058] In a preferred embodiment, the expansion valve 8 may be an electronic expansion valve, but is not limited thereto.

[0059] In a preferred embodiment, the first temperature sensor 5 is connected to the control terminal of the expansion valve 8 via a first electromechanical controller (electromechanical control unit, excluding electronic components), and the opening degree of the expansion valve 8 is adjusted by the mechanical or electromagnetic force provided by the first electromechanical controller. The second temperature sensor 6 is connected to the control terminal of the bypass valve 7 via a second electromechanical controller (electromechanical control unit, excluding electronic components), and the opening degree of the bypass valve 7 is adjusted by the mechanical or electromagnetic force provided by the second electromechanical controller, but this is not limited to this embodiment.

[0060] In a preferred embodiment, the first temperature sensor 5 is integrated with the expansion valve 8, and the opening of the expansion valve 8 is adjusted by an electromechanical structure, but this is not a limitation.

[0061] In a preferred embodiment, the second temperature sensor 6 is integrated with the bypass valve 7, and the opening degree of the bypass valve 7 is adjusted by an electromechanical structure, but this is not a limitation.

[0062] In a preferred embodiment, the expansion valve 8 is a first intelligent solenoid valve, and its opening degree is adjusted by temperature data transmitted from the first temperature sensor 5. The bypass valve 7 is a second intelligent solenoid valve, and its opening degree is adjusted by temperature data transmitted from the second temperature sensor 6, but is not limited thereto.

[0063] This invention provides a flow bypass integrated refrigerator-function automotive air conditioning system, which includes a compressor bypass valve, a refrigerator EXV valve (EXV valve typically refers to an electronic expansion valve, a programmable throttling control element that controls the voltage or current applied to the expansion valve through an electrical signal generated by the adjusted parameter, thereby regulating the refrigerant supply. In a refrigeration system, the EXV valve is a core control element in the refrigeration cycle, capable of dynamically adjusting the refrigerant flow to adapt to different operating conditions), and an exhaust temperature sensor. It can both adjust the bypass valve opening based on the refrigerator's target temperature to bypass part of the flow and adjust the refrigerator EXV opening based on the compressor's exhaust temperature. It can also intermittently close the bypass valve to increase the refrigerant flow in the refrigerator evaporator circuit and improve oil return.

[0064] The specific embodiments of this utility model are as follows:

[0065] Continue to refer to Figure 1 This utility model discloses an integrated refrigerator with a vehicle air conditioning system installed in a new energy vehicle. A bypass valve 7 is connected in parallel between the high-pressure and low-pressure sides of the vehicle compressor 1. The first end of the condenser 2 is connected to the high-pressure side of the vehicle compressor 1. The refrigerator evaporator pipe and the air conditioning evaporator pipe are connected in parallel between the second end of the condenser 2 and the low-pressure side of the vehicle compressor 1. The refrigerator evaporator pipe includes an expansion valve 8 and a refrigerator evaporator 3 connected in series. A first temperature sensor 5 is located at the exhaust end 13 of the vehicle compressor 1 and is connected to the control end of the expansion valve 8. A second temperature sensor 6 is located inside the refrigerator 12 and is connected to the control end of the bypass valve 7. The expansion valve 8 is located downstream of the condenser 2 and upstream of the refrigerator evaporator 3. The air conditioning evaporator pipe includes a thermal expansion valve 9 and an air conditioning evaporator 4 connected in series. The thermal expansion valve 9 is located downstream of the condenser 2 and upstream of the air conditioning evaporator 4. A motor 10 is connected to both the vehicle compressor 1 and the controller 11. The bypass valve 7 is configured to adjust its opening degree based on the difference between the current temperature and the target temperature of the refrigerator 12 (this could be controlled by establishing a proportional relationship between the temperature difference and the opening degree of the bypass valve 7, but is not limited to this), to bypass the refrigerant of the on-board compressor 1. The expansion valve 8 is configured to adjust its opening degree based on the temperature of the exhaust end 13 of the on-board compressor 1 (this could be controlled by establishing a proportional relationship between the temperature of the exhaust end 13 and the opening degree of the expansion valve 8, but is not limited to this).

[0066] When the new energy vehicle using this invention is in operation, the compressor can operate at its low speed (600-1000 rpm) when the refrigerator 12 is working alone. Furthermore, the opening of the bypass valve is adjusted according to the difference between the target temperature and the current temperature of the refrigerator 12, bypassing part of the flow of the on-board compressor 1. In addition, the opening of the refrigerator EXV can be adjusted according to the compressor exhaust temperature. By operating the bypass valve 7, the bypass valve can be closed intermittently, increasing the refrigerant flow in the refrigerator evaporator circuit and improving oil return.

[0067] Figure 2 This is a schematic diagram illustrating the steps of the vehicle air conditioning control method for the integrated refrigerator of this utility model. (See attached diagram.) Figure 2 As shown, the control method for the vehicle air conditioning of the integrated refrigerator of this utility model adopts the above-mentioned integrated refrigerator vehicle air conditioning (reference). Figure 1 The process includes the following steps:

[0068] S110. Collect the temperature of the refrigerator 12, and adjust the opening of the bypass valve 7 according to the difference between the current temperature and the target temperature of the refrigerator 12 to bypass the refrigerant flow of the on-board compressor 1.

[0069] S120: Collect the temperature of the exhaust end 13 of the vehicle compressor 1, and adjust the opening of the expansion valve 8 according to the temperature of the exhaust end 13 of the vehicle compressor 1.

[0070] In a preferred embodiment, steps S110 and S120 are performed simultaneously, but this is not a limitation.

[0071] In a preferred embodiment, the first temperature sensor 5 collects the temperature of the exhaust end 13 of the on-board compressor 1 and sends it to the expansion valve 8, but is not limited thereto.

[0072] In a preferred embodiment, the second temperature sensor 6 collects the temperature inside the refrigerator 12 and sends it to the bypass valve 7, but is not limited thereto.

[0073] The vehicle air conditioning control method of the integrated refrigerator of this utility model can adjust the opening of the bypass valve according to the difference between the target temperature and the current temperature of the refrigerator, thereby bypassing the flow of the vehicle compressor 1; and can also adjust the opening of the refrigerator EXV according to the compressor exhaust temperature.

[0074] In summary, the integrated refrigerator-in-vehicle air conditioner of this utility model can avoid frequent start-stop of the compressor, improve stability, compressor oil return lubrication, and cooling effect.

[0075] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications or substitutions should be considered within the protection scope of the present invention.

Claims

1. A vehicle air conditioner with an integrated refrigerator, characterized in that, include: A vehicle-mounted compressor (1); A bypass valve (7) is connected in parallel between the high-pressure side and the low-pressure side of the on-board compressor (1); A condenser (2), the first end of which is connected to the high-pressure side of the vehicle compressor (1); A refrigerator evaporation pipe and an air conditioner evaporation pipe are connected in parallel between the second end of the condenser (2) and the low-pressure side of the vehicle compressor (1). The refrigerator evaporation pipe includes an expansion valve (8) and a refrigerator evaporator (3) connected in series. A first temperature sensor (5) is installed at the exhaust end (13) of the vehicle compressor (1), and the first temperature sensor (5) is connected to the control end of the expansion valve (8); as well as A second temperature sensor (6) is installed inside the refrigerator (12), and the second temperature sensor (6) is connected to the control terminal of the bypass valve (7).

2. The vehicle air conditioner with an integrated refrigerator as described in claim 1, characterized in that, The expansion valve (8) is located downstream of the condenser (2) and upstream of the refrigerator evaporator (3).

3. The vehicle air conditioner with an integrated refrigerator as described in claim 1, characterized in that, The air conditioning evaporator pipeline includes a thermal expansion valve (9) and an air conditioning evaporator (4) connected in series.

4. The vehicle air conditioner with an integrated refrigerator as described in claim 3, characterized in that, The thermal expansion valve (9) is located downstream of the condenser (2) and upstream of the air conditioner evaporator (4).

5. The vehicle air conditioner with an integrated refrigerator as described in claim 1, characterized in that, Also includes: A motor (10) and a controller (11) are provided, wherein the motor (10) is connected to the vehicle compressor (1) and the controller (11) respectively.

6. The vehicle air conditioner of the integrated refrigerator as described in any one of claims 1 to 5, characterized in that, The bypass valve (7) is configured to adjust its opening based on the difference between the current temperature and the target temperature of the refrigerator to bypass the refrigerant of the on-board compressor (1).

7. The vehicle air conditioner of the integrated refrigerator as described in any one of claims 1 to 5, characterized in that, The expansion valve (8) is configured to adjust the opening degree of the expansion valve (8) based on the temperature of the exhaust end (13) of the on-board compressor (1).

Images