CN110341431B - Self-cleaning control method of parking air conditioner - Google Patents

Self-cleaning control method of parking air conditioner Download PDF

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Publication number
CN110341431B
CN110341431B CN201910696700.1A CN201910696700A CN110341431B CN 110341431 B CN110341431 B CN 110341431B CN 201910696700 A CN201910696700 A CN 201910696700A CN 110341431 B CN110341431 B CN 110341431B
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air conditioner
parking air
self
cleaning
controlling
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CN110341431A (en
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陆晨
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Qingdao Highly Electric Co ltd
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Qingdao Highly Electric Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00371—Air-conditioning arrangements specially adapted for particular vehicles for vehicles carrying large numbers of passengers, e.g. buses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00378—Air-conditioning arrangements specially adapted for particular vehicles for tractor or load vehicle cabins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00421—Driving arrangements for parts of a vehicle air-conditioning
    • B60H1/00428—Driving arrangements for parts of a vehicle air-conditioning electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses

Abstract

The invention relates to the technical field of parking air conditioners, in particular to a self-cleaning control method of a parking air conditioner. The invention aims to solve the problem of the existing parkingThe problem that the air conditioner cannot automatically clean. To this end, the self-cleaning control method of the parking air conditioner of the present invention includes: detecting the actual pressure P of the high-pressure side of the system of the parking air conditioner; based on the outdoor ambient temperature TaoThe running frequency f of the compressor, the opening degree B of the throttle valve and the running speed r of the external fan1Determining the theoretical pressure P of the high-pressure side of the system of the parking air conditionerc(ii) a Comparing the actual pressure P with the theoretical pressure PcThe size of (d); selectively controlling the parking air conditioner to enter a self-cleaning mode based on the comparison result. Through the control mode, the self-cleaning type outdoor heat radiator can be automatically cleaned when the outdoor heat radiator is dirty and blocked in time and effectively, the heat exchange effect of the outdoor heat radiator is guaranteed, and the power consumption of the storage battery is reduced.

Description

Self-cleaning control method of parking air conditioner
Technical Field
The invention relates to the technical field of parking air conditioners, in particular to a self-cleaning control method of a parking air conditioner.
Background
With the development of the transportation industry, automobile air conditioners are installed on transportation trucks, motor homes, buses and the like, and the traditional automobile air conditioners are operated by dragging a mechanical compressor by an automobile engine in the operation process or generating power by the automobile engine to operate an air conditioner compressor. However, in the flameout state of the automobile, if a driver needs to turn on the air conditioner when resting in the automobile, the engine of the automobile can only be restarted to drive the air conditioner of the automobile to run in a fuel-consuming mode. Obviously, such a mode of operation leads to a considerable increase in the transport costs of the motor vehicle.
For solving the problem, the parking air conditioner is provided in the prior art, and compared with the traditional automobile air conditioner, the parking air conditioner is not required to be started by a vehicle engine, but is directly driven by a vehicle-mounted storage battery, so that the parking air conditioner can operate in an automobile flameout state, and is an air conditioner which is more energy-saving and environment-friendly. However, the outdoor unit of the parking air conditioner is installed outside the vehicle (such as installed on the top or the rear side wall of the cab), is exposed outside the cab for a long time, and dust or oil stains enter the heat exchanger during long-term transportation of the vehicle, so that the heat exchanger is seriously clogged due to daily accumulation and monthly pollution, the heat exchange effect is reduced, the user experience is influenced, the electric quantity of the storage battery is wasted due to the improvement of power consumption, and the endurance time of the storage battery is shortened.
Accordingly, there is a need in the art for a new self-cleaning control method of a parking air conditioner to solve the above-mentioned problems.
Disclosure of Invention
In order to solve the problems in the prior art, namely to solve the problem that the existing parking air conditioner cannot self-clean, the invention provides a self-cleaning control method of the parking air conditioner, wherein the parking air conditioner comprises a compressor, an indoor radiator, an inner fan, a throttle valve, an outdoor radiator and an outer fan, the parking air conditioner is arranged on a vehicle, the vehicle is provided with a storage battery, and the storage battery is connected with the parking air conditioner so as to supply power to the parking air conditioner; the self-cleaning control method comprises the following steps:
detecting actual pressure P of a system high-pressure side of the parking air conditioner;
based on the outdoor ambient temperature TaoThe running frequency f of the compressor, the opening degree B of the throttle valve and the running rotating speed r of the outer fan1Determining a theoretical pressure P of a system high pressure side of the parking air conditionerc；
Comparing the actual pressure P with the theoretical pressure PcThe size of (d);
selectively controlling the parking air conditioner to enter a self-cleaning mode based on the comparison result.
In a preferred embodiment of the above-mentioned self-cleaning control method for a parking air conditioner, the step of selectively controlling the parking air conditioner to enter the self-cleaning mode based on the comparison result further includes:
when P is more than or equal to PcThen, acquiring the current state of the storage battery;
selectively controlling the parking air conditioner to enter a self-cleaning mode based on a current state of the battery.
In a preferred embodiment of the above-mentioned method for controlling a parking air conditioner to enter a self-cleaning mode selectively based on a current state of the battery, the method further comprises:
and when the storage battery is in a charging state, controlling the parking air conditioner to enter a self-cleaning mode.
In a preferred embodiment of the above-mentioned method for controlling a parking air conditioner to enter a self-cleaning mode selectively based on a current state of the battery, the method further comprises:
and when the storage battery is in a discharging state, controlling the parking air conditioner to keep a current running state, and when the storage battery is in a charging state, controlling the parking air conditioner to enter a self-cleaning mode.
In a preferred embodiment of the above-mentioned method for controlling a parking air conditioner to enter a self-cleaning mode when the battery is in a charged state, the step of controlling the parking air conditioner to enter the self-cleaning mode further comprises:
when the storage battery is in a charging state, acquiring a current operation mode of the parking air conditioner;
and if the current operation mode is a heating mode, controlling the parking air conditioner to directly enter a self-cleaning mode.
In a preferable embodiment of the above-mentioned method for controlling a parking air conditioner to enter a self-cleaning mode when the battery is in a charged state, the step of controlling the parking air conditioner to enter the self-cleaning mode further includes:
and if the current operation mode is a cooling mode, controlling the parking air conditioner to operate in a heating mode and then entering a self-cleaning mode.
In a preferred embodiment of the above-mentioned self-cleaning control method for a parking air conditioner, the step of selectively controlling the parking air conditioner to enter the self-cleaning mode based on the comparison result further includes:
when P < PcAnd when the parking air conditioner is in the current running state, controlling the parking air conditioner to keep the current running state.
In the preferable technical scheme of the self-cleaning control method of the parking air conditioner, the self-cleaning control method is based on the outdoor environment temperature TaoDetermining the theoretical pressure P of the high-pressure side of the parking air conditioner through the operation frequency f of the compressor, the opening B of the throttle valve and the operation rotating speed r of the external fanc"further comprising the steps of:
determining the theoretical pressure of the high-pressure side of the system by adopting a method shown in the following formula:
Pc＝k1×Tao+k2×f+k3×B+k4×r1+b
wherein, PcIs the theoretical pressure; t isaoIs the outdoor ambient temperature; f is the operating frequency of the compressor; b is the opening of the throttle valve; r is1The running rotating speed of the outer fan is set; k is a radical of1、k2、k3、k4Is a coefficient; b is a constant.
In a preferred embodiment of the above-mentioned method for controlling a parking air conditioner to enter a self-cleaning mode, the step of "controlling the parking air conditioner to enter a self-cleaning mode" further comprises:
controlling the parking air conditioner to operate in a heating mode;
adjusting the operating frequency f of the compressor and the operating speed r of the external fan1The rotating speed r of the inner fan2And an opening degree B of the throttle valve to frost a surface of the outdoor radiator;
calculating the pressure difference between the air inlet side and the air outlet side of the outdoor radiator;
and when the pressure difference is greater than the preset pressure difference, controlling the parking air conditioner and the refrigeration mode to operate so as to defrost the surface of the radiator.
In a preferred embodiment of the above-mentioned method for controlling a parking air conditioner to enter a self-cleaning mode, before the step of "controlling the parking air conditioner to enter a self-cleaning mode", the method further comprises:
and controlling the vehicle to send self-cleaning prompt information.
As can be understood by those skilled in the art, in a preferred embodiment of the present invention, the parking air conditioner includes a compressor, an indoor radiator, an inner fan, a throttle valve, an outdoor radiator and an outer fan, the parking air conditioner is mounted on a vehicle, the vehicle is provided with a storage battery, and the storage battery is connected with the parking air conditioner so as to supply power to the parking air conditioner; the self-cleaning control method comprises the following steps: detecting the actual pressure P of the high-pressure side of the system of the parking air conditioner; based on the outdoor ambient temperature TaoOf a compressorThe running frequency f, the opening B of the throttle valve and the running speed r of the outer fan1Determining the theoretical pressure P of the high-pressure side of the system of the parking air conditionerc(ii) a Comparing the actual pressure P with the theoretical pressure PcThe size of (d); selectively controlling the parking air conditioner to enter a self-cleaning mode based on the comparison result.
Through the control mode, the self-cleaning control method of the parking air conditioner can timely and effectively carry out self-cleaning on the outdoor radiator when the outdoor radiator is dirty and blocked, the heat exchange effect of the outdoor radiator is guaranteed, and the power consumption of the storage battery is reduced. In particular, by basing on the outdoor ambient temperature TaoThe running frequency f of the compressor, the opening degree B of the throttle valve and the running speed r of the external fan1Determining the theoretical pressure P of the high-pressure side of the system of the parking air conditionercThen based on the actual pressure P and the theoretical pressure P of the high pressure side of the systemcAnd comparing, namely reflecting the filth blockage degree of the outdoor radiator from the side surface through pressure comparison, and then timely cleaning the outdoor radiator when the filth blockage condition of the outdoor radiator reaches a certain degree, so that the heat exchange effect of the outdoor radiator is ensured, the electric quantity loss of the storage battery is reduced, and the transportation cost of the transport truck is reduced.
Furthermore, by executing the self-cleaning mode when the storage battery is in a charging state, the self-cleaning control method can also ensure that the electric quantity of the storage battery is always in a sufficient state, avoid a large quantity of electric quantity loss of the storage battery caused by executing the self-cleaning mode, and improve the safety of the transportation process.
Drawings
The self-cleaning control method of the parking air conditioner of the present invention will be described with reference to the accompanying drawings in conjunction with a delivery truck. In the drawings:
FIG. 1 is a flowchart of a self-cleaning control method of a parking air conditioner according to the present invention;
fig. 2 is a logic diagram of a self-cleaning control method of a parking air conditioner in accordance with the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the present embodiment is described in connection with a delivery truck, this is not intended to limit the scope of the invention, and those skilled in the art may apply the invention in other application scenarios without departing from the principles of the present invention. For example, the control method of the present application may also be applied to any vehicle, such as a motor home, a bus, etc., in which a parking air conditioner is installed.
First, referring to fig. 1, a self-cleaning control method of a parking air conditioner of the present application will be described. Fig. 1 is a flowchart of a self-cleaning control method of a parking air conditioner according to the present invention.
As shown in fig. 1, in order to solve the problem that the existing parking air conditioner cannot self-clean, the application provides a self-cleaning control method of the parking air conditioner, the parking air conditioner comprises an outdoor unit and an indoor unit, a compressor, a throttle valve, an outdoor radiator and an external fan are arranged in the outdoor unit, the throttle valve is a valve body of which the opening can be controlled by an electronic expansion valve, and an indoor radiator and an internal fan are arranged in the indoor unit. The parking air conditioner is installed on a transport truck, a storage battery is arranged on the transport truck, and the storage battery is connected with the parking air conditioner so as to supply power to the parking air conditioner. The self-cleaning control method comprises the following steps:
s100, detecting the actual pressure P of the high-pressure side of the parking air conditioner system; the actual pressure P on the system high pressure side of the parking air conditioner is obtained, for example, by a pressure sensor provided at the compressor discharge or on the coil of the radiator.
S200, based on outdoor environment temperature TaoThe running frequency f of the compressor, the opening degree B of the throttle valve and the running speed r of the external fan1Determining the theoretical pressure P of the high-pressure side of the system of the parking air conditionerc(ii) a For example, the outdoor ambient temperature T is obtained by a temperature sensor provided in the outdoor unitaoObtaining the running frequency f of the compressor, the opening B of the throttle valve and the running speed r of the outer fan by reading the running parameters of the current parking air conditioner1After the parameters are obtained, the theoretical pressure P of the high-pressure side of the system is calculated based on the parameterscA determined relationship, such as a functional relationship or a corresponding relationship, etc., and determining a theoretical pressure P of the high pressure side of the system of the parking air conditionerc。
S300, comparing the actual pressure P with the theoretical pressure PcThe size of (d); for example, after acquiring the actual pressure P on the high pressure side of the system, the actual pressure P is compared with the theoretical pressure PcFor example, comparing the magnitudes of the two by calculating whether the difference between the two is greater than 0, or comparing the magnitudes of the two by calculating whether the ratio between the two is greater than 1.
And S400, selectively controlling the parking air conditioner to enter a self-cleaning mode based on the comparison result. For example, when the actual pressure P is greater than the theoretical pressure PcIn time, it was demonstrated that heat dissipation was likely affected by the presence of dirt on the outdoor heat sink, resulting in actual pressure greater than theoretical pressure PcControlling the parking air conditioner to enter a self-cleaning mode at the moment, and removing dust and sundries attached to the outdoor radiator to ensure the heat exchange effect of the outdoor radiator; when the actual pressure P is less than the theoretical pressure PcMeanwhile, the heat exchange effect of the outdoor radiator is proved to be good, so that the self-cleaning mode is not required to be started.
It should be noted that the above control method may be executed by an existing controller of the vehicle, or by an existing controller of the parking air conditioner, or may be executed by a specially configured controller for executing the method of the present invention, or may be executed by one functional module or functional unit of a general vehicle controller. For example, when the vehicle is an electric vehicle, the control method of the present application may be implemented by a Vehicle Control Unit (VCU), and when the vehicle is a non-electric vehicle, the control method may be implemented by an Electronic Control Unit (ECU), and so on.
Through the control mode, the self-cleaning control method of the parking air conditioner can timely and effectively carry out self-cleaning on the outdoor radiator when the outdoor radiator is dirty and blocked, the heat exchange effect of the outdoor radiator is guaranteed, and the power consumption of the storage battery is reduced. In particular, by basing on the outdoor ambient temperature TaoThe running frequency f of the compressor, the opening degree B of the throttle valve and the running speed r of the external fan1Ensure thatTheoretical pressure P of system high-pressure side of fixed parking air conditionercThen based on the actual pressure P and the theoretical pressure P of the high pressure side of the systemcAnd comparing, namely reflecting the filth blockage degree of the outdoor radiator from the side surface through pressure comparison, and then timely cleaning the outdoor radiator when the filth blockage condition of the outdoor radiator reaches a certain degree, so that the heat exchange effect of the outdoor radiator is ensured, the electric quantity loss of the storage battery is reduced, and the transportation cost of the transport truck is reduced.
In a more preferred embodiment, the theoretical pressure P iscCan be determined based on the following formula:
Pc＝k1×Tao+k2×f+k3×B+k4×r1+b (1)
in the formula (1), PcIs the theoretical pressure; t isaoIs the outdoor ambient temperature; f is the operating frequency of the compressor; b is the opening of the throttle valve; r is1The running speed of the outer fan; k is a radical of1、k2、k3、k4Is a coefficient; b is a constant. Wherein k is1、k2、k3、k4And b can be fit based on experimental data. For example, the parking air conditioner is subjected to a plurality of operation experiments for different outdoor ambient temperatures, compressor operation frequencies, expansion valve opening degrees and external fan rotation speeds. In the experiment, the operation parameters of the parking air conditioner are set so that the temperature and the humidity of the air in the cab reach a better level, and at the moment, the pressure of the high-pressure side of the system of the parking air conditioner at each outdoor environment temperature is recorded respectively, so that the functional relation between the theoretical pressure and the parameters is established. The formula determines the theoretical pressure by combining a plurality of influence parameters, so that the calculation result is more accurate.
Of course, the determination of the theoretical pressure may also be made based on other relationships of one or more of the above parameters to the theoretical pressure, such as only based on a fixed correspondence between the outdoor ambient temperature and the theoretical pressure, etc. In this case, a relationship comparison table between the outdoor ambient temperature and the theoretical pressure is determined based on a test, and the comparison table is stored in the parking air conditioner, and the theoretical pressure corresponding to the outdoor ambient temperature can be determined using the comparison table.
The present application will now be described in detail with reference to fig. 2, in connection with a preferred embodiment. Fig. 2 is a logic diagram of a self-cleaning control method of a parking air conditioner according to the present invention.
In a preferred embodiment, as shown in fig. 2, the driver of the transport truck activates the parking air conditioner, during which the outdoor ambient temperature T is detectedaoThe running frequency f of the compressor, the opening degree B of the expansion valve and the running speed r of the outer fan1And the actual pressure P on the high pressure side of the system. And then based on the outdoor ambient temperature TaoThe running frequency f of the compressor, the opening degree B of the expansion valve and the running speed r of the outer fan1Calculating the theoretical pressure PcAnd the actual pressure P is compared with the theoretical pressure PcA comparison is made. Finally, whether to enter the self-cleaning mode is determined based on the comparison result. The specific comparison determination and control process is as follows:
(1) when P < PcAnd then, the heat exchange condition of the outdoor radiator is proved to be good without self-cleaning, and the controller of the parking air conditioner controls the parking air conditioner to keep the current running mode and running state so as to carry out air conditioning on the cab.
(2) When P is more than or equal to PcMeanwhile, the heat exchange condition of the outdoor radiator is proved to be poor, and normal heat radiation is possibly influenced due to the fact that dirt such as dust and sundries appear on the radiator. And the controller of the parking air conditioner sends a self-cleaning instruction at the moment.
(3) After the self-cleaning instruction is sent, the current state of the storage battery is judged, if the storage battery is currently in a discharging state, the fact that the storage battery is not externally connected with a power supply for inputting is proved, if self-cleaning is carried out at the moment, the electric quantity of the storage battery is greatly lost, the electric quantity of the storage battery is insufficient, and safety accidents are easily caused. Therefore, the controller controls the parking air conditioner to keep the current running state, and the self-cleaning mode is executed after the storage battery is input by the external power supply, so that the storage battery is ensured to have sufficient electric quantity, and the driving safety is improved.
(4) If the storage battery is in a charging state, it is proved that an external power supply is connected at the moment, and the storage battery has enough electric quantity to execute a self-cleaning mode. At the moment, the controller controls the parking air conditioner to operate in a self-cleaning mode, the outdoor radiator is cleaned, and the heat exchange effect of the outdoor radiator is effectively improved under the condition that the electric quantity of the storage battery is ensured.
(5) After entering a self-cleaning mode, firstly judging the current operation mode of the parking air conditioner, if the current operation mode is a refrigeration mode, controlling the mode of the parking air conditioner to be changed into a heating mode for operation, and then executing the self-cleaning mode; if the current parking air conditioner operates the heating mode, the self-cleaning mode is directly performed.
(6) In the heating mode, the controller adjusts the running frequency f of the compressor and the running speed r of the external fan1Rotational speed r of inner fan2And an opening degree B of the throttle valve to frost the surface of the outdoor radiator; in the frosting process, the pressure between the air inlet side and the air outlet side of the outdoor radiator is obtained in real time, the pressure difference is calculated, for example, the pressure of the air inlet side and the pressure of the air outlet side are obtained by respectively arranging pressure sensors on the air inlet side and the air outlet side, and then the pressure difference is calculated to obtain the pressure difference. And after the pressure difference is obtained, judging whether the pressure difference is larger than a preset pressure difference. When the pressure difference is larger than the preset pressure difference, the frosting effect of the outdoor heat exchanger is proved to be better, and defrosting and cleaning can be carried out. At the moment, the controller controls the parking air conditioner to operate in a refrigeration mode so as to defrost the outdoor radiator, and in the defrosting process, dust and impurities attached to the outdoor radiator are taken away by water drops formed in the defrosting process, so that the self-cleaning of the outdoor radiator is realized.
(7) After the self-cleaning mode is finished, the controller controls the parking air conditioner to return to the operation state before the self-cleaning mode.
It should be noted that the above preferred embodiments are only used for illustrating the principle of the present invention, and are not intended to limit the protection scope of the present invention. Without departing from the principles of the present invention, those skilled in the art can adjust the setting manner described above, so that the present invention can be applied to more specific application scenarios.
For example, in an alternative embodiment, the specific implementation manner of the self-cleaning mode is not fixed, and the above embodiment is only an example, and a person skilled in the art may make modifications to the specific implementation manner of the self-cleaning mode without departing from the scope of the present application. For example, the self-cleaning mode may be implemented as: firstly, operating a heating mode and adjusting the operating parameters of an air conditioner to frost the surface of an outdoor radiator; and then, after the heating mode is operated for a set time, the operation mode is directly switched to the cooling mode to defrost and clean the outdoor radiator.
As another example, in another alternative embodiment, the step of determining the current operation mode of the parking air conditioner after entering the self-cleaning mode is not necessary, and those skilled in the art can reasonably delete the step in order to make the present control method simple and easy.
For another example, in another alternative embodiment, before determining to enter the self-cleaning mode, the user may be reminded of entering the self-cleaning mode by sending a prompt message. For example, the prompt is sent out by means of flashing of the indicator light, voice information or text information and the like so as to inform a driver that the driver is about to enter the self-cleaning mode, and bad user experience brought to the user due to the switching of the air conditioner operation mode is prevented.
For another example, in another alternative embodiment, although the steps in the above embodiment are described in a sequential manner, those skilled in the art will understand that, in order to achieve the effect of the embodiment, the different steps need not be executed in such an order, and may be executed simultaneously (in parallel) or in an inverse order, and these simple variations are within the scope of the present invention. For example, although the self-cleaning command is issued before the current state of the battery is determined in the above embodiment, this is not always the case, and the execution sequence may be changed by those skilled in the art without any creative effort. That is, the actual pressure P may be judged to be equal to or higher than the theoretical pressure PcFirstly, the current state of the storage battery is obtained, and then whether to control the parking is determined based on the current stateThe vehicle air conditioner enters a self-cleaning mode.
Of course, the above alternative embodiments, and the alternative embodiments and the preferred embodiments can also be used in a cross-matching manner, so that a new embodiment is combined to be suitable for a more specific application scenario.
It should be noted that although the detailed steps of the method of the present invention have been described in detail, those skilled in the art can combine, separate and change the order of the above steps without departing from the basic principle of the present invention, and the modified technical solution does not change the basic concept of the present invention and thus falls into the protection scope of the present invention.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims (9)

1. A self-cleaning control method of a parking air conditioner is characterized in that the parking air conditioner comprises a compressor, an indoor radiator, an inner fan, a throttle valve, an outdoor radiator and an outer fan, the parking air conditioner is installed on a vehicle, the vehicle is provided with a storage battery, and the storage battery is connected with the parking air conditioner so as to supply power to the parking air conditioner; the self-cleaning control method comprises the following steps:
detecting actual pressure P of a system high-pressure side of the parking air conditioner;
based on the outdoor ambient temperature TaoThe running frequency f of the compressor, the opening degree B of the throttle valve and the running rotating speed r of the outer fan1Determining a theoretical pressure P of a system high pressure side of the parking air conditionerc；
Comparing the actual pressure P with the theoretical pressure PcThe size of (d);
selectively controlling the parking air conditioner to enter a self-cleaning mode based on the comparison result;
wherein "based on outdoor ambient temperature TaoThe running frequency f of the compressor, the opening degree B of the throttle valve and the running rotating speed r of the outer fan1Determining a theoretical pressure P of a system high pressure side of the parking air conditionerc"further comprising the steps of:
determining the theoretical pressure of the high-pressure side of the system by adopting a method shown in the following formula:
Pc＝k1×Tao+k2×f+k3×B+k4×r1+b
wherein, PcIs the theoretical pressure; t isaoIs the outdoor ambient temperature; f is the operating frequency of the compressor; b is the opening of the throttle valve; r is1The running rotating speed of the outer fan is set; k is a radical of1、k2、k3、k4Is a coefficient; b is a constant.
2. The self-cleaning control method of a parking air conditioner according to claim 1, wherein the step of selectively controlling the parking air conditioner to enter a self-cleaning mode based on the comparison result further comprises:
when the actual pressure P is larger than or equal to the theoretical pressure PcThen, acquiring the current state of the storage battery;
selectively controlling the parking air conditioner to enter a self-cleaning mode based on a current state of the battery.
3. The self-cleaning control method of a parking air conditioner according to claim 2, wherein the step of selectively controlling the parking air conditioner to enter a self-cleaning mode based on a current state of the secondary battery further comprises:
and when the storage battery is in a charging state, controlling the parking air conditioner to enter a self-cleaning mode.
4. The self-cleaning control method of a parking air conditioner according to claim 2, wherein the step of selectively controlling the parking air conditioner to enter a self-cleaning mode based on a current state of the secondary battery further comprises:
and when the storage battery is in a discharging state, controlling the parking air conditioner to keep a current running state, and when the storage battery is in a charging state, controlling the parking air conditioner to enter a self-cleaning mode.
5. The self-cleaning control method of a parking air conditioner according to claim 3, wherein the step of controlling the parking air conditioner to enter a self-cleaning mode when the secondary battery is in a charged state further comprises:
when the storage battery is in a charging state, acquiring a current operation mode of the parking air conditioner;
and if the current operation mode is a heating mode, controlling the parking air conditioner to directly enter a self-cleaning mode.
6. The self-cleaning control method of a parking air conditioner according to claim 5, wherein the step of controlling the parking air conditioner to enter a self-cleaning mode when the secondary battery is in a charged state further comprises:
and if the current operation mode is a cooling mode, controlling the parking air conditioner to operate in a heating mode and then entering a self-cleaning mode.
7. The self-cleaning control method of a parking air conditioner according to claim 1, wherein the step of selectively controlling the parking air conditioner to enter a self-cleaning mode based on the comparison result further comprises:
when the actual pressure P is less than the theoretical pressure PcAnd when the parking air conditioner is in the current running state, controlling the parking air conditioner to keep the current running state.
8. The self-cleaning control method of a parking air conditioner according to claim 3, wherein the step of controlling the parking air conditioner to enter a self-cleaning mode when the secondary battery is in a charged state further comprises:
controlling the parking air conditioner to operate in a heating mode;
adjusting the operating frequency f of the compressor and the operating speed r of the external fan1The rotating speed r of the inner fan2And an opening degree B of the throttle valve to frost a surface of the outdoor radiator;
calculating the pressure difference between the air inlet side and the air outlet side of the outdoor radiator;
and when the pressure difference is greater than the preset pressure difference, controlling the parking air conditioner to operate in a refrigeration mode so as to defrost the surface of the outdoor radiator.
9. The self-cleaning control method of a parking air conditioner according to claim 3, characterized in that, before the step of controlling the parking air conditioner to enter a self-cleaning mode when the secondary battery is in a charged state, the self-cleaning control method further comprises:
and controlling the vehicle to send self-cleaning prompt information.
CN201910696700.1A 2019-07-30 2019-07-30 Self-cleaning control method of parking air conditioner Active CN110341431B (en)

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