Evaporator cleaning system and tractor

Abstract

The utility model provides an evaporator cleaning system and a tractor. An evaporator cleaning system comprises an evaporator, a centrifugal fan, a compressor, a condenser, a dryer and an electronic expansion valve, the evaporator is connected with the compressor through a pipeline, the compressor is connected with the condenser through a pipeline, the condenser is connected with the dryer through a pipeline, and the electronic expansion valve is connected with the centrifugal fan. The dryer is connected with the electronic expansion valve through a pipeline, the electronic expansion valve is connected with the evaporator through a pipeline, and the centrifugal fan is arranged adjacent to the evaporator.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle air conditioning technical field especially, relates to an evaporator cleaning system and tractor. BACKGROUND

[0002] The agricultural tractor air conditioning system refers to the temperature, humidity, flow rate and cleanliness of air in the cab are adjusted and controlled, but the agricultural tractor often works in the field, and the environment is dusty, so after a period of work, the evaporator will be attached with dust, which affects the refrigeration effect of the air conditioner, and the evaporator is installed in a closed space, so it is very inconvenient to clean. SUMMARY

[0003] The utility model solves the technical problem that the prior art lacks, and provides an evaporator cleaning system and tractor.

[0004] The utility model discloses a technical scheme that solves the above technical problem: an evaporator cleaning system, comprising: an evaporator, a centrifugal fan, a compressor, a condenser, a dryer, an electronic expansion valve, the evaporator is connected with the compressor through a pipeline, the compressor is connected with the condenser through a pipeline, the condenser is connected with the dryer through a pipeline, the dryer is connected with the electronic expansion valve through a pipeline, the electronic expansion valve is connected with the evaporator through a pipeline, and the centrifugal fan is arranged adjacent to the evaporator.

[0005] The utility model discloses a technical scheme that solves the above technical problem: an evaporator cleaning system, comprising: an evaporator, a centrifugal fan, a compressor, a condenser, a dryer, an electronic expansion valve, the evaporator is connected with the compressor through a pipeline, the compressor is connected with the condenser through a pipeline, the condenser is connected with the dryer through a pipeline, the dryer is connected with the electronic expansion valve through a pipeline, the electronic expansion valve is connected with the evaporator through a pipeline, and the centrifugal fan is arranged adjacent to the evaporator.

[0006] Further, the electronic expansion valve is connected with a controller, and the controller is connected with the compressor and the centrifugal fan respectively.

[0007] The utility model discloses a technical scheme that solves the above technical problem: an evaporator cleaning system, comprising: an evaporator, a centrifugal fan, a compressor, a condenser, a dryer, an electronic expansion valve, the evaporator is connected with the compressor through a pipeline, the compressor is connected with the condenser through a pipeline, the condenser is connected with the dryer through a pipeline, the dryer is connected with the electronic expansion valve through a pipeline, the electronic expansion valve is connected with the evaporator through a pipeline, and the centrifugal fan is arranged adjacent to the evaporator.

[0008] Further, the controller is provided with a cleaning button.

[0009] The beneficial effect of the further technical scheme is that when the cleaning button is pressed, the controller controls the electronic expansion valve to make the evaporator core body freeze, and when the freezing reaches a certain degree, the high-temperature and high-pressure gas is blown to the evaporator core body by the centrifugal fan, so that the dust is separated from the evaporator core body under the action of the melting water and the airflow, thereby achieving the cleaning purpose. The cleaning process is controlled by one-key button, and the evaporator does not need to be disassembled, which is simple and convenient.

[0010] Further, the centrifugal fan is connected with a control valve through a pipeline, the control valve is connected with the controller, and the control valve is connected with the air pump through a pipeline.

[0011] The beneficial effect of the further technical scheme is that the high-temperature and high-pressure gas is introduced from the whole vehicle gas system to increase the air volume for cleaning. The air pump of the tractor generally compresses air, and the compressed air becomes high-temperature and high-pressure gas. The high-temperature and high-pressure gas is generally used for air brake systems and the like. When the controller transmits a signal to the control valve, the control valve is opened, and at this time, the high-temperature and high-pressure gas enters the centrifugal fan, thereby increasing the air volume and the temperature of the air in the centrifugal fan, so that the ice on the surface of the evaporator is rapidly melted, and the melted water carries away the dust and impurities adhered to the surface of the evaporator, thereby completing the cleaning.

[0012] Further, an accumulator is installed on the pipeline between the control valve and the air pump, and the accumulator is connected with the air brake system through a pipeline.

[0013] The beneficial effect of the further technical scheme is that the high-temperature and high-pressure gas is introduced from the whole vehicle gas system to increase the air volume for cleaning. The air pump of the tractor generally compresses air, and the compressed air becomes high-temperature and high-pressure gas. The high-temperature and high-pressure gas enters the accumulator, and is generally used for air brake systems and the like. When the controller transmits a signal to the control valve, the control valve is opened, and at this time, the high-temperature and high-pressure gas in the accumulator enters the centrifugal fan, thereby increasing the air volume and the temperature of the air in the centrifugal fan, so that the ice on the surface of the evaporator is rapidly melted, and the melted water carries away the dust and impurities adhered to the surface of the evaporator, thereby completing the cleaning.

[0014] Further, an air inlet pressure sensor and a temperature sensor are installed on the pipeline between the evaporator and the compressor, an exhaust pressure sensor is installed on the pipeline between the compressor and the condenser, and the air inlet pressure sensor, the temperature sensor and the exhaust pressure sensor are connected with the controller.

[0015] The beneficial effect of the further technical scheme is that the temperature sensor and the intake pressure sensor are installed on the pipeline before the compressor, and the exhaust pressure sensor is installed on the pipeline after the compressor, when the exhaust pressure sensor monitors that the pressure has reached the required value, the controller will disconnect the compressor to save energy consumption, and the controller will control the opening and closing of the electronic expansion valve according to the signals of the temperature sensor and the intake pressure sensor.

[0016] Further, the evaporator is wrapped with a cover, and the bottom of the cover is provided with a drain port.

[0017] The beneficial effect of the further technical scheme is that the drain port is arranged to facilitate the discharge of the melting water and impurities such as dust from the cover.

[0018] Further, the condenser is arranged adjacent to the engine fan.

[0019] The beneficial effect of the further technical scheme is that the refrigerant in the condenser is changed from gaseous state to liquid state under the cooling of the engine fan, and a large amount of heat is released.

[0020] Further, the compressor is provided with refrigerant, and the evaporator is provided with a fin plate.

[0021] The beneficial effect of the further technical scheme is that the refrigeration work is facilitated, and the evaporator core is facilitated to freeze.

[0022] In addition, the utility model provides a tractor which comprises the evaporator cleaning system of any one of the above.

[0023] The beneficial effect of the technical scheme of the utility model is that when the evaporator needs to be cleaned, the electronic expansion valve is kept in a large opening state, the evaporator core is frozen, and when the freezing reaches a certain degree, the evaporator core is blown by the centrifugal fan, so that the dust is separated from the evaporator core under the action of the melting water and the airflow, the adhered impurities such as dust on the surface of the evaporator are taken away by the melting water, and the cleaning purpose is achieved.

[0024] The advantages of the additional aspects of the utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The structure schematic view of the evaporator cleaning system provided by the utility model embodiment.

[0026] Brief Description of Drawings: 1, evaporator; 2, centrifugal fan; 3, compressor; 4, condenser; 5, dryer; 6, electronic expansion valve; 7, controller; 8, cleaning button; 9, control valve; 10, air pump; 11, energy accumulator; 12, inlet air pressure sensor; 13, temperature sensor; 14, exhaust pressure sensor; 15, drain; 16, engine fan. DETAILED DESCRIPTION

[0027] The principles and characteristics of the present application are described below in conjunction with the accompanying drawings, and the examples are only used to explain the present application and are not used to limit the scope of the present application.

[0028] As shown in Figure 1 The present application provides an evaporator cleaning system, comprising: evaporator 1, centrifugal fan 2, compressor 3, condenser 4, dryer 5, electronic expansion valve 6, the evaporator 1 is connected with the compressor 3 through pipeline, the compressor 3 is connected with the condenser 4 through pipeline, the condenser 4 is connected with the dryer 5 through pipeline, the dryer 5 is connected with the electronic expansion valve 6 through pipeline, the electronic expansion valve 6 is connected with the evaporator 1 through pipeline, the centrifugal fan 2 is adjacent to the evaporator 1.

[0029] The beneficial effects of the technical scheme of the present application are: when the evaporator needs to be cleaned, the electronic expansion valve is kept in a large opening state, the evaporator core body is frozen, and when the freezing reaches a certain degree, the evaporator core body is blown by the centrifugal fan, so that the dust is separated from the evaporator core body under the action of the melting water and the airflow, and the melting water carries away the dust and other impurities adhered to the surface of the evaporator, thereby achieving the purpose of cleaning. Without disassembling the evaporator, it is simple and convenient.

[0030] When the evaporator needs to be cleaned, the user can manually keep the electronic expansion valve in a large opening state, the evaporator core body is frozen, and when the freezing reaches a certain degree, the evaporator core body is blown by the centrifugal fan, so that the dust is separated from the evaporator core body under the action of the melting water and the airflow, thereby achieving the purpose of cleaning.

[0031] The present application provides an evaporator cleaning system, when the cleaning button is pressed, the controller controls the electronic expansion valve, the evaporator core body is frozen, and when the freezing reaches a certain degree, the evaporator core body is blown by the high-temperature and high-pressure gas, so that the dust is separated from the evaporator core body under the action of the melting water and the airflow, thereby achieving the purpose of cleaning.

[0032] As shown in Figure 1 Further, the electronic expansion valve 6 is connected with the controller 7, and the controller 7 is connected with the compressor 3 and the centrifugal fan 2.

[0033] The beneficial effect of the further technical scheme is that when the evaporator needs to be cleaned, the controller controls the electronic expansion valve to make the evaporator core body freeze, and when the freezing reaches a certain degree, the centrifugal fan blows the evaporator core body by using high-temperature and high-pressure gas, so that the dust is separated from the evaporator core body under the action of the melting water and the airflow, thereby achieving the cleaning purpose.

[0034] It should be noted that the control method, analysis method and comparison method of the controller are prior art, and those skilled in the art can easily think of how to program according to actual needs, which will not be described here.

[0035] As shown in Figure 1 Further, the controller 7 is provided with a cleaning button 8.

[0036] The beneficial effect of the further technical scheme is that when the cleaning button is pressed, the controller controls the electronic expansion valve to make the evaporator core body freeze, and when the freezing reaches a certain degree, the centrifugal fan blows the evaporator core body by using high-temperature and high-pressure gas, so that the dust is separated from the evaporator core body under the action of the melting water and the airflow, thereby achieving the cleaning purpose. The cleaning process is controlled by a one-key button, and the evaporator does not need to be disassembled, which is simple and convenient.

[0037] As shown in Figure 1 Further, the centrifugal fan 2 is connected with a control valve 9 through a pipeline, the control valve 9 is connected with the controller 7, and the control valve 9 is connected with a gas pump 10 through a pipeline.

[0038] The beneficial effect of the further technical scheme is that high-temperature and high-pressure gas is introduced from the whole vehicle gas system to increase the air volume for cleaning. The air pump of the tractor generally compresses air, and the compressed air becomes high-temperature and high-pressure gas. The high-temperature and high-pressure gas is generally used for a gas braking system, etc. When the controller transmits a signal to the control valve, the control valve will be opened, and at this time, the high-temperature and high-pressure gas will enter the centrifugal fan to warm and increase the air volume in the centrifugal fan, so that the ice on the surface of the evaporator melts rapidly, and the melted water can take away the dust and other impurities adhered to the surface of the evaporator, thereby completing the cleaning.

[0039] In this embodiment, the user can manually start the control valve.

[0040] As shown in Figure 1 Further, an energy accumulator 11 is installed on the pipeline between the control valve 9 and the gas pump 10, and the energy accumulator 11 is connected with a gas braking system through a pipeline.

[0041] The beneficial effect of the further technical scheme is that high-temperature and high-pressure gas is introduced from the whole vehicle gas system to increase the clean air volume. The air pump of the tractor generally compresses air, and the compressed air becomes high-temperature and high-pressure gas. The high-temperature and high-pressure gas enters the accumulator and is generally used for the gas brake system. When the controller transmits a signal to the control valve, the control valve is opened, and at this time, the high-temperature and high-pressure gas in the accumulator enters the centrifugal fan, so that the air in the centrifugal fan is heated and the air volume is increased, so that the ice on the surface of the evaporator is rapidly melted, and the melted water carries away the dust and other impurities adhered to the surface of the evaporator, thereby completing the cleaning.

[0042] In the figure, the gas in the accumulator can be transmitted to other systems such as the gas brake system through the pipeline.

[0043] As shown in Figure 1 Further, an air inlet pressure sensor 12 and a temperature sensor 13 are installed on the pipeline between the evaporator 1 and the compressor 3, and an exhaust pressure sensor 14 is installed on the pipeline between the compressor 3 and the condenser 4. The air inlet pressure sensor 12, the temperature sensor 13, and the exhaust pressure sensor 14 are connected to the controller 7.

[0044] The beneficial effect of the further technical scheme is that a temperature sensor and an air inlet pressure sensor are installed on the pipeline before the compressor, and an exhaust pressure sensor is installed on the pipeline after the compressor. When the exhaust pressure sensor monitors that the pressure has reached the required value, the controller will turn off the compressor to save energy consumption. The controller will control the opening and closing of the electronic expansion valve according to the signals of the temperature sensor and the air inlet pressure sensor.

[0045] As shown in Figure 1 Further, the evaporator 1 is covered with a cover, and the bottom of the cover is provided with a drain port 15.

[0046] The beneficial effect of the further technical scheme is that the setting of the drain port facilitates the discharge of the melted water and dust and other impurities out of the cover.

[0047] As shown in Figure 1 Further, the condenser 4 is arranged adjacent to the engine fan 16.

[0048] The beneficial effect of the further technical scheme is that the refrigerant in the condenser changes from gas to liquid under the cooling of the engine fan, and a large amount of heat is released.

[0049] Further, the compressor 3 is provided with refrigerant, and the evaporator 1 is provided with a fin plate.

[0050] The beneficial effect of the further technical scheme is that it is convenient to realize refrigeration work and facilitate the icing of the evaporator core.

[0051] The refrigeration principle of the tractor air conditioning system is that the compressor compresses low-temperature and low-pressure refrigerant gas to form high-temperature and high-pressure gas, at this time, the refrigerant enters the condenser, and the refrigerant in the condenser changes from gas to liquid under the cooling of the engine fan, and releases a large amount of heat. Then the refrigerant passes through the drying tank (drier), which removes water, impurities and gas from the refrigerant liquid. The liquid refrigerant flows through the electronic expansion valve, and the liquid refrigerant with high temperature and pressure expands after passing through the electronic expansion valve, and is discharged in the form of mist (fine droplets). The electronic expansion valve can be dynamically adjusted under the control of the controller to control the flow of the refrigerant and ensure that the refrigerant is completely evaporated in the evaporator. The low-temperature and low-pressure liquid mist refrigerant enters the evaporator and boils and gasifies by absorbing the heat of the air around the evaporator through the evaporator wall, thereby cooling the gas and reducing the temperature of the air in the cab. The centrifugal fan can accelerate the flow of air around the evaporator, thereby improving the refrigeration effect.

[0052] On the pipeline before the compressor, temperature sensors and pressure sensors (intake pressure sensors) are installed, and on the pipeline after the compressor, an exhaust pressure sensor is installed. When the exhaust pressure sensor monitors that the pressure has reached the required value, the controller will turn off the compressor to save energy consumption. The controller will control the opening and closing of the electronic expansion valve according to the signals of the temperature sensor and the intake pressure sensor. When the temperature sensor shows high temperature and the intake pressure is low, the electronic expansion valve opens wide, and the refrigerant entering the evaporator increases, thereby increasing the refrigeration capacity. When the temperature sensor shows low temperature and the intake pressure is high, the electronic expansion valve opens small, and the refrigerant entering the expansion valve decreases, thereby reducing the refrigeration capacity. Because the evaporator is frozen, the fins of the evaporator are blocked by ice, and the resistance of the centrifugal fan increases, which is not good for cooling the cab. Generally, to prevent the evaporator from freezing, the opening of the expansion valve is temporarily reduced when the temperature decreases.

[0053] In the utility model, when the cleaning button is pressed, a signal is transmitted to the controller, and the controller keeps the electronic expansion valve wide open, so that the evaporator freezes. When the evaporator is frozen, the tractor air pump (air pump) generally compresses air, and the compressed air becomes high-temperature and high-pressure gas. The high-temperature and high-pressure gas enters the accumulator, which is generally used for air brake equipment. When the controller transmits a signal to the control valve, the control valve will open, and at this time, the high-temperature and high-pressure gas in the accumulator will enter the centrifugal fan, which will heat the air in the centrifugal fan and increase the air volume, thereby rapidly melting the ice on the surface of the evaporator. The melted water will take away the dust and other impurities adhered to the surface of the evaporator, thereby completing the cleaning.

[0054] 1. The utility model discloses a method that makes the evaporator freeze and then melts, so that the water melts takes away the dust and other impurities adhered to the surface of the evaporator.

[0055] 2. To increase the amount of clean air, high-temperature and high-pressure gas is introduced from the vehicle air system.

[0056] 3. The cleaning process is operated by a one-button, and the evaporator does not need to be disassembled, which is simple and convenient.

[0057] The evaporator cleaning system provided by the utility model can control the opening of the electronic expansion valve, then make the evaporator freeze, make the ice of the evaporator melt by high-temperature and high-pressure air, and the melted water can take away the adhered dust and other impurities, so that the cleaning purpose is achieved.

[0058] In addition, the utility model further provides a tractor which comprises the evaporator cleaning system of any one of the above.

[0059] The beneficial effects of the technical scheme of the utility model are as follows: when the evaporator needs to be cleaned, the electronic expansion valve is kept in a large opening state, the evaporator core freezes, the evaporator core is blown by the centrifugal fan when it freezes to a certain degree, dust is separated from the evaporator core under the action of the melted water and airflow, the melted water takes away the adhered dust and other impurities on the surface of the evaporator, and the cleaning purpose is achieved.

[0060] Finally, it should be noted that: the above embodiments are only used to illustrate the technical scheme of the utility model, and not to limit it; although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that: it can still modify the technical scheme recorded in the above embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the scope of the technical scheme of the embodiments of the utility model.

Claims

1. An evaporator cleaning system, characterized by, It comprises: an evaporator, a centrifugal fan, a compressor, a condenser, a dryer, an electronic expansion valve, the evaporator is connected with the compressor through a pipeline, the compressor is connected with the condenser through a pipeline, the condenser is connected with the dryer through a pipeline, the dryer is connected with the electronic expansion valve through a pipeline, the electronic expansion valve is connected with the evaporator through a pipeline, and the centrifugal fan is arranged adjacent to the evaporator.

2. A vaporizer cleaning system as claimed in claim 1, wherein, The electronic expansion valve is connected with a controller, and the controller is connected with the compressor and the centrifugal fan respectively.

3. A vaporizer cleaning system as claimed in claim 2, wherein, A cleaning button is installed on the controller.

4. A vaporizer cleaning system as defined in claim 1, wherein, The centrifugal fan is connected with a control valve through a pipeline, the control valve is connected with a controller, and the control valve is connected with an air pump through a pipeline.

5. A vaporizer cleaning system according to claim 4, wherein, An accumulator is installed on the pipeline between the control valve and the air pump, and the accumulator is connected with an air brake system through a pipeline.

6. A vaporizer cleaning system as defined in claim 1, wherein, An air inlet pressure sensor and a temperature sensor are installed on the pipeline between the evaporator and the compressor, an exhaust pressure sensor is installed on the pipeline between the compressor and the condenser, and the air inlet pressure sensor, the temperature sensor and the exhaust pressure sensor are connected with the controller.

7. A vaporizer cleaning system as defined in claim 1, wherein, The evaporator is covered with a cover, and a drain port is arranged at the bottom of the cover.

8. A vaporizer cleaning system as defined in claim 1, wherein, The condenser is arranged adjacent to an engine fan.

9. A vaporizer cleaning system as defined in claim 1, wherein, The compressor is provided with refrigerant, and the evaporator is provided with a fin plate.

10. A tractor characterised in that, An evaporator cleaning system according to any one of claims 1 to 9.

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