阅读说明：本技术 一种空调系统及车辆 (Air conditioning system and vehicle ) 是由 朱俊峰 王宜海 杨菲菲 张中刚 章志才 崔建维 汪中奇 贾载勋 潘瑞 范宝 陈强 于 2021-09-07 设计创作，主要内容包括：本申请公开了一种空调系统及车辆,空调系统包括制冷循环装置,制冷循环装置上设有冷媒流量传感器,制冷循环装置包括膨胀阀；空调系统还包括冷媒流量监测装置,冷媒流量监测装置包括控制器和流量调节机构；控制器的输入端与冷媒流量传感器的第一端电连接,控制器的输出端与流量调节机构的输入端电连接,流量调节机构的第一输出端与膨胀阀连接,冷媒流量传感器的第二端接地。本申请通过冷媒流量监测装置对制冷循环装置中的冷媒流量进行实时监测及精准调节,确保空调系统中的冷媒流量符合用户需求。(The application discloses an air conditioning system and a vehicle, wherein the air conditioning system comprises a refrigeration cycle device, a refrigerant flow sensor is arranged on the refrigeration cycle device, and the refrigeration cycle device comprises an expansion valve; the air conditioning system also comprises a refrigerant flow monitoring device, wherein the refrigerant flow monitoring device comprises a controller and a flow adjusting mechanism; the input end of the controller is electrically connected with the first end of the refrigerant flow sensor, the output end of the controller is electrically connected with the input end of the flow regulating mechanism, the first output end of the flow regulating mechanism is connected with the expansion valve, and the second end of the refrigerant flow sensor is grounded. This application carries out real-time supervision and accurate regulation through refrigerant flow monitoring devices to the refrigerant flow among the refrigeration cycle device, ensures that the refrigerant flow among the air conditioning system accords with user's demand.)

1. An air conditioning system comprises a refrigeration cycle device, and is characterized in that a refrigerant flow sensor is arranged on the refrigeration cycle device, and the refrigeration cycle device comprises an expansion valve;

the air conditioning system also comprises a refrigerant flow monitoring device, wherein the refrigerant flow monitoring device comprises a controller and a flow regulating mechanism;

the input end of the controller is electrically connected with the first end of the refrigerant flow sensor, the output end of the controller is electrically connected with the input end of the flow regulating mechanism, the first output end of the flow regulating mechanism is connected with the expansion valve, and the second end of the refrigerant flow sensor is grounded.

2. The air conditioning system of claim 1, wherein the flow regulating mechanism includes a regulating valve and a drive mechanism, an output of the drive mechanism being connected to a regulating component of the regulating valve through a converter that converts rotational motion of the drive mechanism to linear motion of the regulating component.

3. The air conditioning system of claim 2, wherein the drive mechanism includes a not door and a motor, a first end of the not door being electrically connected to the output of the controller, and a second end of the not door being electrically connected to an actuator of the motor.

4. The air conditioning system as claimed in claim 3, wherein the controller comprises a turn switch and a stroke controller, an input end of the stroke controller is connected to the first end of the refrigerant flow sensor and the first input end of the turn switch, respectively, and an output end of the stroke controller is connected to the input end of the stroke controller through a first resistor;

the second input end of the steering switch is connected with the second output end of the regulating valve, and the output end of the steering switch is connected with the first end of the NOT gate.

5. The air conditioning system as claimed in claim 4, wherein the stroke controller is a transistor, a base of the transistor is electrically connected to the first end of the refrigerant flow sensor, a collector of the transistor is electrically connected to the positive output end of the power supply, and the first resistor is disposed between an emitter of the transistor and the base of the transistor.

6. The air conditioning system as claimed in claim 4 or 5, wherein the switch is a voltage comparator, a forward input end of the voltage comparator is electrically connected to the first end of the refrigerant flow sensor, a reverse input end of the voltage comparator is electrically connected to the second output end of the regulating valve, and an output end of the voltage comparator is connected to the first end of the not gate.

7. The air conditioning system as claimed in claim 5, wherein a capacitor is disposed between the collector of the transistor and the second end of the refrigerant flow sensor.

8. The air conditioning system as claimed in claim 2, wherein the first input end of the regulating valve is connected to the positive output end of the power supply, and the third output end of the regulating valve is connected to the second end of the refrigerant flow sensor.

9. The air conditioning system of claim 8, wherein a second resistor is disposed between the first input of the regulator valve and the positive output of the power source.

10. A vehicle, characterized in that it comprises an air conditioning system according to claims 1-9.

Technical Field

The present application relates to the field of vehicle technology, and more particularly, to an air conditioning system and a vehicle.

Background

When the power switch is turned on, the windshield switch and the AC switch are turned on, a condenser fan and a compressor of the automobile air conditioning system can work, a refrigerant (R134a) flows through the refrigerant circulation of the evaporation core body in the air box, and low-temperature liquid refrigerants formed by the action of the compressor, the condenser, the throttle pipe and the like absorb the heat of surrounding air so as to realize refrigeration. The refrigerant flow is an important index of the refrigeration effect of the system, but the refrigerant flow is not effectively monitored at present, and the refrigeration performance is influenced by overhigh or overlow refrigerant flow.

Disclosure of Invention

The application provides an air conditioning system and vehicle carries out real-time supervision and regulation to the refrigerant flow, ensures that the refrigerant flow among the air conditioning system accords with user's demand.

The application provides an air conditioning system, which comprises a refrigeration cycle device, wherein a refrigerant flow sensor is arranged on the refrigeration cycle device, and the refrigeration cycle device comprises an expansion valve;

the air conditioning system also comprises a refrigerant flow monitoring device, wherein the refrigerant flow monitoring device comprises a controller and a flow adjusting mechanism;

the input end of the controller is electrically connected with the first end of the refrigerant flow sensor, the output end of the controller is electrically connected with the input end of the flow regulating mechanism, the first output end of the flow regulating mechanism is connected with the expansion valve, and the second end of the refrigerant flow sensor is grounded.

Preferably, the flow rate adjusting mechanism comprises a regulating valve and a driving mechanism, an output end of the driving mechanism is connected with a regulating component of the regulating valve through a converter, and the converter converts the rotary motion of the driving mechanism into the linear motion of the regulating component.

Preferably, the driving mechanism comprises a not gate and a motor, wherein a first end of the not gate is electrically connected with an output end of the controller, and a second end of the not gate is electrically connected with an actuator of the motor.

Preferably, the controller comprises a steering switch and a stroke controller, wherein the input end of the stroke controller is respectively connected with the first end of the refrigerant flow sensor and the first input end of the steering switch, and the output end of the stroke controller is connected with the input end of the stroke controller through a first resistor;

the second input end of the steering switch is connected with the second output end of the regulating valve, and the first end of the output end NAND gate of the steering switch is connected.

Preferably, the stroke controller is a triode, a base of the triode is electrically connected with the first end of the refrigerant flow sensor, a collector of the triode is electrically connected with the positive output end of the power supply, and a first resistor is arranged between an emitter of the triode and the base of the triode.

Preferably, the steering switch is a voltage comparator, a forward input end of the voltage comparator is electrically connected with the first end of the refrigerant flow sensor, a reverse input end of the voltage comparator is electrically connected with the second output end of the regulating valve, and a first end of the output end of the voltage comparator and a first end of the nand gate are connected.

Preferably, a capacitor is arranged between the collector of the triode and the second end of the refrigerant flow sensor.

Preferably, the first input end of the regulating valve is connected with the positive output end of the power supply, and the third output end of the regulating valve is connected with the second end of the refrigerant flow sensor.

Preferably, a second resistor is arranged between the first input end of the regulating valve and the positive output end of the power supply.

The application also provides a vehicle comprising the air conditioning system.

Further features of the present application and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which is to be read in connection with the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.

FIG. 1 is a block schematic diagram of an air conditioning system provided herein;

fig. 2 is a schematic circuit diagram of a refrigeration cycle apparatus provided herein;

fig. 3 is a circuit diagram of a refrigerant flow monitoring device according to an embodiment of the present disclosure.

Detailed Description

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

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

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

As shown in fig. 1, an air conditioning system 100 provided by the present application includes a refrigeration cycle device 110 and a refrigerant flow rate monitoring device 120.

Referring to fig. 1 and 2, as an example, the refrigeration cycle apparatus 110 includes a compressor 1104, a condenser 1106, an expansion valve 1102, a receiver-drier 1105 and an evaporator 1103, which are connected by piping and other auxiliary accessories to form a closed cycle system.

The compressor 1104 compresses a gaseous refrigerant into a high-temperature and high-pressure refrigerant gas and discharges the refrigerant gas. After the high-temperature and high-pressure refrigerant gas flows into the condenser 1106 through the pipeline, the heat is dissipated and cooled in the condenser 1106, and the refrigerant gas is condensed into a high-temperature and high-pressure liquid refrigerant and flows out. The high-temperature high-pressure liquid refrigerant enters the receiver drier 1105 through a pipeline, and flows into the expansion valve 1102 after being dried. The expansion valve 1102 throttles the liquid refrigerant therethrough into low-temperature and low-pressure wet vapor, and the refrigerant absorbs heat in the evaporator 1103 to achieve a cooling effect. The refrigeration cycle apparatus is also provided with a refrigerant flow sensor 1101.

The refrigerant flow rate monitoring device 120 includes a controller 1201 and a flow rate adjustment mechanism 1202. An input end of the controller 1201 is electrically connected to a first end of the refrigerant flow sensor 1101, an output end of the controller 1201 is electrically connected to an input end of the flow rate adjusting mechanism 1202, a first output end of the flow rate adjusting mechanism 1202 is connected to the expansion valve 1102, and a second end of the refrigerant flow sensor 1101 is grounded.

The controller 1201 is configured to control the flow rate adjustment mechanism 1202 to adjust the opening degree of the expansion valve, thereby adjusting the refrigerant flow rate in the refrigeration cycle apparatus. Specifically, in the first state, the controller 1201 controls the flow rate adjustment mechanism 1202 to increase the opening degree of the expansion valve, so that the refrigerant flow rate in the refrigeration cycle apparatus increases. In the second state, the controller 1201 controls the flow rate adjustment mechanism 1202 to decrease the opening degree of the expansion valve, so that the refrigerant flow rate in the refrigeration cycle apparatus decreases.

As an embodiment, the flow rate adjusting mechanism includes a regulating valve and a driving mechanism, an output end of the driving mechanism is connected with a regulating component of the regulating valve through a converter, and the converter converts the rotary motion of the driving mechanism into the linear motion of the regulating component.

Fig. 3 is a circuit diagram of a refrigerant flow monitoring device according to an embodiment of the present disclosure. As shown in fig. 3, the driving mechanism includes a not gate and a motor, a first end of the not gate is electrically connected to the output end of the controller, and a second end of the not gate is electrically connected to the actuator of the motor. After the motor rotates, the slide sheet R3 of the regulating valve is driven by the converter to move, so as to change the output voltage of the first output end OUT of the regulating valve, and further change the opening degree of the expansion valve 1102.

As an embodiment, the controller 1201 includes a steering switch and a stroke controller, an input end of the stroke controller is connected to the first end of the refrigerant flow sensor and the first input end of the steering switch, respectively, and an output end of the stroke controller is connected to an input end of the stroke controller through a first resistor. The second input end of the steering switch is connected with the second output end of the regulating valve, and the first end of the output end NAND gate of the steering switch is connected. The stroke controller is used for controlling the adjustment quantity of the flow adjusting mechanism, thereby controlling the opening degree variable quantity of the expansion valve. The steering switch is used for determining the opening direction of the expansion valve by adjusting the moving direction of the slide sheet R3 on the valve, so that the opening degree of the expansion valve is increased or decreased.

As an embodiment, as shown in fig. 3, the stroke controller is a transistor Q, a base of the transistor Q is electrically connected to the first end of the refrigerant flow sensor RT, a collector of the transistor Q is electrically connected to the positive output terminal of the power source VCC, and a first resistor R1 is disposed between an emitter of the transistor Q and the base of the transistor Q. And a capacitor C is arranged between the collector of the triode Q and the second end of the refrigerant flow sensor RT and is used for placing energy attenuation of the triode.

As an embodiment, as shown in fig. 3, the steering switch is a voltage comparator, a positive input terminal + of the voltage comparator is electrically connected to the first terminal of the refrigerant flow sensor RT, a negative input terminal-of the voltage comparator is electrically connected to the second output terminal of the regulating valve, and a first terminal of the output terminal nand gate of the voltage comparator is connected.

As shown in fig. 3, a first input end of the regulating valve is connected to an anode output end of the power VCC, and a third output end of the regulating valve is connected to a second end of the refrigerant flow sensor RT. And a second resistor R2 is arranged between the first input end of the regulating valve and the anode output end of the power supply VCC, so that the current mutation of the regulating valve is prevented.

The principle of the air conditioning system of the present application is as follows:

along with the increase of the refrigerant flow, the resistance value of the refrigerant flow sensor RT is gradually increased, and otherwise, the resistance value is gradually decreased.

When a user opens the air conditioner, the air conditioning system obtains the preset refrigerant flow according to the air quantity preset by the user by adjusting the air quantity of the air conditioner. When the refrigerant flow is 0, the resistance value of the refrigerant flow sensor RT is minimum, the voltage of the base of the triode Q is minimum at this time, the triode Q is cut off, the upper end voltage of the refrigerant flow sensor RT is 0, the voltage of the forward input end + of the voltage comparator is lower than the voltage of the reverse input end-, the voltage comparator outputs a low level, the inverter inputs a low level, the inverter outputs a high level, the high level drives the motor to rotate forward, the forward rotation of the motor drives the sliding piece R3 to move upward, the output voltage of the first output end OUT of the regulating valve is increased continuously, the opening degree of the expansion valve 1102 is increased continuously, and the refrigerant flow in the refrigeration cycle device is increased gradually.

After the refrigerant flow increases, the voltage at the upper end of the refrigerant flow sensor RT increases, the base voltage of the triode Q increases, the triode Q is conducted, the voltage of the forward input end + of the voltage comparator increases, at the moment, the voltage of the forward input end + is higher than the voltage of the reverse input end-, the voltage comparator outputs a high level, the NOT gate inputs a high level, the NOT gate outputs a low level, the low level drives the motor to rotate reversely, the sliding piece R3 is driven to move downwards, the output voltage of the first output end OUT of the regulating valve continuously decreases, the opening degree of the expansion valve 1102 continuously decreases, and the refrigerant flow in the refrigeration cycle device gradually decreases.

When the slip sheet R3 moves downwards, the voltage of the reverse input end of the voltage comparator is reduced, when the voltage of the reverse input end is consistent with the voltage of the forward input end +, the voltage comparator stops outputting, the driving motor stops working, the voltage on the right side of the slip sheet R3 does not change, the output voltage of the first output end OUT of the regulating valve does not change at the moment, the refrigerant flow reaches a preset value, and therefore the refrigerant flow is monitored.

Based on above-mentioned air conditioning system, this application still provides a vehicle, and this vehicle includes above-mentioned air conditioning system.

It is understood that the air conditioning system of the present application is applicable not only to vehicles but also to other devices having an air conditioning system, and the air conditioning system of the present application may also be used as a stand-alone air conditioning system.

This application carries out real-time supervision and accurate regulation through refrigerant flow monitoring devices to the refrigerant flow among the refrigeration cycle device, ensures that the refrigerant flow among the air conditioning system accords with user's demand.

Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.