CN111483286B - Method and device for calculating opening degree of regulating valve of vehicle air conditioning system - Google Patents
Method and device for calculating opening degree of regulating valve of vehicle air conditioning system Download PDFInfo
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- CN111483286B CN111483286B CN201910074190.4A CN201910074190A CN111483286B CN 111483286 B CN111483286 B CN 111483286B CN 201910074190 A CN201910074190 A CN 201910074190A CN 111483286 B CN111483286 B CN 111483286B
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- opening degree
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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
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
- B60H1/00899—Controlling the flow of liquid in a heat pump system
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- 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 a method and a device for calculating the opening degree of a regulating valve of a vehicle air conditioning system, wherein the method comprises the following steps: at least collecting influence factors including compressor frequency and evaporator temperature; and controlling the opening degree of the regulating valve at least according to the frequency of the compressor and the temperature of the evaporator, wherein the opening degree of the regulating valve is in positive correlation with the frequency of the compressor and the temperature of the evaporator. The invention can synchronize with the function of the required refrigerating capacity by adjusting the opening degree of the regulating valve according to the frequency of the compressor, can realize the energy saving of the system while ensuring better temperature regulating effect, and meets the integral coordination requirement of the refrigerating capacity of the system.
Description
Technical Field
The invention relates to a method and a device for calculating the opening degree of a regulating valve of a vehicle air conditioning system, and belongs to the technical field of pure electric vehicles.
Background
As a device for adjusting temperature, an air conditioning system has been increasingly widely used, and a conventional air conditioning single circulation system is mainly designed for a single space, such as a room, a vehicle, etc. As shown in fig. 1, which is a schematic structural diagram of a conventional air conditioning system, the air conditioning system in fig. 1 includes a compressor, an outlet of the compressor is connected to an inlet of an air conditioning condenser through a high pressure sensor or a switch, an outlet of the air conditioning condenser is connected to an air conditioning evaporator through a regulating valve, and an outlet of the air conditioning evaporator is connected to an inlet of the compressor through a gas-liquid separator and a low pressure sensor or a switch, thereby forming a complete air conditioning single circulation system.
An adjusting valve for adjusting flow is arranged between an air conditioner condenser and an air conditioner evaporator in the air conditioning system, and the adjusting valve can be a thermal expansion valve or an electronic expansion valve. The opening degree of the regulating valve directly influences the amount of refrigerant flowing into the air conditioner evaporator and the pressure of the refrigerant, and in the conventional air conditioning system, the opening degree of the regulating valve is controlled by detecting the temperature change of the refrigerant at the outlet of the air conditioner evaporator (namely, the temperature of the air conditioner evaporator). However, the regulating valve is controlled according to the temperature change of the air conditioner evaporator, and the opening degree of the regulating valve is possibly not coordinated with the working condition of the air conditioning system, so that the refrigerating effect is poor, and sometimes energy is wasted.
With the change of the actual demand, the demand for temperature adjustment for double compartments or for multiple areas in a single compartment, such as a passenger car or bus with double compartments, and different areas in a single compartment, has arisen. The air conditioning system arranged under the conditions becomes complex and diverse in structure, and the control process of the air conditioning system is also influenced by various factors, so that higher requirements are provided for the energy conservation, adaptability and overall working condition coordination of the air conditioning system, and the requirements for the control accuracy of specific variable quantities such as the opening degree of the regulating valve are stricter.
Disclosure of Invention
The invention aims to provide a method for calculating the opening degree of a regulating valve of a vehicle air conditioning system, which is used for solving the problems of poor energy saving performance and unsatisfactory temperature regulating effect of the system caused by the calculation of the opening degree of the regulating valve in the conventional air conditioning system.
In order to solve the technical problem, the invention provides a method for calculating the opening degree of a regulating valve of a vehicle air conditioning system, which comprises the following steps:
at least collecting influence factors including compressor frequency and evaporator temperature;
and controlling the opening degree of a regulating valve at least according to the frequency of the compressor and the temperature of the evaporator, wherein the opening degree of the regulating valve is in positive correlation with the frequency of the compressor and the temperature of the evaporator.
In order to solve the technical problem, the invention further provides a regulating valve opening degree calculating device of a vehicle air conditioning system, which comprises a processor and a memory, wherein the processor is used for processing the instructions stored in the memory to realize the following method:
at least collecting influence factors including compressor frequency and evaporator temperature;
and controlling the opening degree of the regulating valve at least according to the frequency of the compressor and the temperature of the evaporator, wherein the opening degree of the regulating valve is in positive correlation with the frequency of the compressor and the temperature of the evaporator.
The invention has the beneficial effects that: adjusting the opening degree of the adjusting valve according to the frequency of the compressor, and increasing the opening degree of the adjusting valve when the frequency of the compressor is high to increase the refrigerating capacity of the air-conditioning evaporator; when the frequency of the compressor is low, the opening degree of the regulating valve is reduced, and the refrigerating capacity of the air conditioner evaporator is reduced. The opening degree of the regulating valve is regulated according to the frequency of the compressor, the regulating valve can be synchronous with the function of the required refrigerating capacity and is coordinated with the working condition of the air conditioning system, the energy conservation of the system can be realized while the better temperature regulating effect is ensured, and the integral coordination requirement of the refrigerating capacity of the system is met.
As a further improvement of the method and the device, in order to further improve the reliability of the opening degree adjustment of the regulating valve, the high-pressure and the low-pressure of the air conditioner are also detected, the pressure difference value between the high-pressure and the low-pressure of the air conditioner is calculated, and the opening degree of the regulating valve is also controlled according to the pressure difference value, so that the opening degree of the regulating valve and the reciprocal of the pressure difference value form a positive correlation relationship.
As a further improvement of the method and the device, in order to make the opening degree control of the regulating valve more stable, the positive correlation is a direct ratio.
Drawings
FIG. 1 is a schematic diagram of a prior art vehicle air conditioning system;
FIG. 2 is a flowchart corresponding to embodiment 1 of a method for calculating the opening degree of a regulating valve of a vehicle air conditioning system according to the present invention;
FIG. 3 is a flowchart corresponding to embodiment 2 of a method for calculating the opening degree of a regulating valve of a vehicle air conditioning system according to the present invention;
FIG. 4 is a schematic diagram of a dual zone air conditioning cooling system of the present invention with dual condensers, electromagnetic flow control valves;
fig. 5 is a schematic diagram of a dual zone air conditioning cooling system of the present invention with dual condensers and electronic expansion valves.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Embodiment 1 of a method for calculating the opening degree of a regulating valve of an air conditioning system for a vehicle:
as shown in fig. 1, in order to control the opening degree of the regulating valve more accurately and stably, specifically, consideration on the frequency of the compressor is added, and in a specific calculation step, two implementation manners can be adopted:
the first mode is as follows: the control method is improved on the basis of the control method of the opening degree of the regulating valve of the existing air conditioning system. In an existing air conditioning system, the temperature of an air conditioner evaporator (or the outlet temperature of the air conditioner evaporator) is generally collected, the control quantity of an adjusting valve is calculated according to the temperature change condition of the air conditioner evaporator, and the opening degree of the adjusting valve is adjusted according to the control quantity. On the basis of the control quantity found in the prior art, a control coefficient related to the compressor frequency f is added, that is, after the compressor frequency f is taken into account, a control coefficient related to the compressor frequency f is multiplied on the basis of the control quantity calculated in the prior art, and the opening degree of the regulating valve is controlled according to the multiplication result. To obtain the control coefficient, a specific implementation form may be: obtained by normalizing the compressor frequency f, e.g. f/f Forehead (forehead) ，f Forehead (forehead) Indicating the nominal frequency of the compressor. Thus, the control amount obtained by the prior art can be adjusted according to the change of the frequency of the compressor, and the opening degree of the regulating valve can be controlled according to the adjusted control amount. For example, if the frequency of the compressor is increased, the working condition of the system is enhanced, and at the moment, the amount of refrigerant entering an evaporator of the air conditioner needs to be increased, so that the opening degree of the regulating valve needs to be increased; otherwise, the opening degree of the regulating valve needs to be reduced.
The second mode is as follows: the opening degree of the regulating valve is obtained by adopting the following formula:
β＝k1*f*T (1)
wherein beta is the opening degree of the regulating valve, f is the frequency of the compressor, T is the temperature of the air conditioner evaporator, and k1 is a matching value, and is used for adjusting the dimensions before and after the formula.
In order to obtain the matching value k1 in the above formula (1), the matching value k may be obtained through an experiment, where the experiment includes: and (3) enabling the compressor to work at the maximum frequency, enabling the opening degree of the regulating valve to be maximum, and detecting the temperature of the air conditioner evaporator so as to calculate a matching value k1. In actual operation, the opening degree of the regulating valve can be obtained by substituting the frequency of the compressor and the temperature of the air conditioner evaporator into the formula (1).
In the embodiment, the opening degree of the regulating valve is regulated according to the frequency of the compressor by collecting the frequency of the compressor, and when the frequency of the compressor is high, the opening degree of the regulating valve is increased, so that the refrigerant quantity of an evaporator of the air conditioner is increased; when the frequency of the compressor is low, the opening degree of the regulating valve is reduced, and the refrigerant (refrigeration) quantity of the air conditioner evaporator is reduced. The opening degree of the regulating valve is regulated according to the frequency of the compressor, so that the regulating valve can be synchronous with the function of the required refrigerant quantity, and the integral coordination requirement of the system refrigerating capacity is met. At this time, a flowchart corresponding to the method for calculating the opening degree of the regulating valve of the vehicle air conditioning system is shown in fig. 2.
Embodiment 2 of a method for calculating the opening degree of a regulating valve of an air conditioning system for a vehicle:
on the basis of the method for calculating the opening degree of the regulating valve of the vehicle air conditioning system in embodiment 1, the embodiment considers the influence of the pressure difference value between the high-pressure of the air conditioner and the low-pressure of the air conditioner on the opening degree of the regulating valve, and in a specific calculation link, the implementation modes which can be adopted comprise two types:
the first mode is as follows: on the basis of the control quantity finally found in the first mode in embodiment 1 of the calculation method for the opening degree of a regulating valve of an air conditioning system for a vehicle, the control quantity is multiplied by a control coefficient related to the pressure difference, and the opening degree of the regulating valve is controlled according to the multiplication result. The specific implementation mode is as follows: the pressure difference is normalized in a manner similar to the first manner in embodiment 1 of the method for calculating the opening degree of the regulating valve of the vehicle air conditioning system, for example, the pressure difference when the operating performance of the compressor is better can be taken as a standard for normalization, and the normalization is performed in consideration of the fact that the opening degree of the regulating valve is inversely proportional to the pressure difference: (Pg-Pd) Standard of merit /(Pg-Pd) Practice of ，(Pg-Pd) Standard of merit The pressure difference value corresponding to the better working performance of the compressor is obtained; (Pg-Pd) Practice of Pg is the high pressure of the air conditioner, and Pd is the low pressure of the air conditioner. The better working performance of the compressor refers to that the frequency of the compressor under a set working condition can meet the requirements of refrigeration effect, energy conservation and the like, and can be obtained through experiments according to the performance and the actual requirements of the compressor.
The second mode is as follows: on the basis of the second mode of the method for calculating the degree of opening of the regulating valve of the vehicle air conditioning system in embodiment 1, that is, on the basis of the degree of opening β of the regulating valve calculated by the formula (1), the inverse of the pressure difference between the air-conditioning high-pressure Pg and the air-conditioning low-pressure Pd and the matching value k2 corresponding to the air-conditioning high-pressure Pg and the air-conditioning low-pressure Pd are multiplied. At this time, the calculation formula of the opening degree of the regulating valve is as follows:
β＝k1*f*T*k2/(Pg-Pd) (2)
wherein, it is the same as the matching value k1 corresponding to the compressor frequency calculated by the second method in the embodiment 1 of the calculating method of the opening degree of the regulating valve of the vehicle air conditioning system, and when the matching value k2 corresponding to the high pressure Pg of the air conditioner and the low pressure Pd of the air conditioner is obtained, the matching value k2 can be obtained through experiments, and the experiment process includes: and enabling the compressor to work at the maximum frequency, enabling the opening degree of the regulating valve to be maximum, and detecting the temperature of the air conditioner evaporator, the high pressure of the air conditioner and the low pressure of the air conditioner so as to calculate a matching value k2. In the calculation process, the pressure difference value between the high-pressure of the air conditioner and the low-pressure of the air conditioner needs to be calculated, the opening degree of the regulating valve and the pressure difference value form a negative correlation relationship, and the opening degree of the regulating valve and the pressure difference value form a positive correlation relationship with the reciprocal of the pressure difference value.
In the embodiment, by collecting the high pressure and low pressure of the air conditioner, the opening degree of the regulating valve is regulated according to the pressure difference value between the high pressure and low pressure of the air conditioner, when the pressure difference value between the high-pressure of the air conditioner and the low-pressure of the air conditioner is increased, the opening degree of the regulating valve is reduced to reduce the refrigerant quantity of the evaporator, the high-pressure of the air conditioner is reduced, the low-pressure of the air conditioner is increased, and the pressure difference value is ensured to be in the optimal refrigeration working condition range; otherwise, the same principle is applied. At this time, a flowchart corresponding to the method for calculating the opening degree of the regulating valve of the vehicle air conditioning system is shown in fig. 3.
The above embodiment is applicable to an air conditioning system in an existing single vehicle cabin, and is also applicable to an air conditioning system in multiple vehicle cabins or different areas in a single vehicle cabin, taking temperature control of two different areas in a single vehicle cabin as an example, in the case of a single-vehicle double-area air conditioning system provided with two condensers and electromagnetic flow regulating valves, such as the double-area air conditioning cooling system provided with two condensers and electromagnetic flow regulating valves in fig. 4, or the double-area air conditioning cooling system provided with two condensers and electronic expansion valves in fig. 5, the calculation method of the opening degree of the regulating valve (electromagnetic flow regulating valve or electronic expansion valve) is similar to the calculation method of the opening degree of the regulating valve in embodiment 2 of the vehicle air conditioning system, and as another embodiment, the calculation method of the opening degree of the regulating valve in embodiment 1 of the vehicle air conditioning system can also be adopted.
In the above embodiment, the opening degree of the regulating valve is in direct proportion to the reciprocal of the frequency and the pressure difference of the compressor, and the regulating of the opening degree of the regulating valve is uniform when the influencing factors are changed. In practice, as another embodiment, the adjustment of the opening degree of the adjustment valve may be non-uniform, and the square of the compressor frequency may be taken when calculating the control amount, taking the compressor frequency as an example.
The embodiment of the device for calculating the opening degree of the regulating valve of the vehicle air conditioning system comprises:
the embodiment provides a regulating valve opening degree calculating device of a vehicle air conditioning system, which comprises a processor and a memory, wherein the processor is used for processing instructions stored in the memory so as to realize the regulating valve opening degree calculating method of the vehicle air conditioning system. For those skilled in the art, a corresponding computer instruction may be generated according to the method for calculating the opening degree of the regulating valve of the vehicle air conditioning system, so as to obtain a device for calculating the opening degree of the regulating valve of the vehicle air conditioning system, and details are not repeated herein.
It should be noted that the above-mentioned embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope thereof, and although the present application has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that various changes, modifications or equivalents of the embodiments of the present application can be made after reading the present application, but these changes, modifications or equivalents are all within the protection scope of the claims of the present invention.
Claims (6)
1. A method for calculating the opening degree of a regulating valve of a vehicle air conditioning system is characterized by comprising the following steps:
at least collecting influence factors including compressor frequency and evaporator temperature;
controlling the opening degree of a regulating valve at least according to the frequency of a compressor and the temperature of an evaporator, wherein the opening degree of the regulating valve is in positive correlation with the frequency of the compressor and the temperature of the evaporator;
calculating the opening degree of the regulating valve by adopting a first mode or a second mode:
the method I comprises the following steps: calculating the control quantity of the regulating valve according to the temperature change condition of the air conditioner evaporator; multiplying a control coefficient related to the frequency of the compressor on the basis of the control quantity of the regulating valve, and controlling the opening degree of the regulating valve according to the multiplication result; the control coefficient is f/f Forehead (forehead) ，f Forehead (D) Is the rated frequency of the compressor;
the second method comprises the following steps: the opening degree of the regulating valve is obtained by adopting the following formula:
β＝k1*f*T
wherein beta is the opening degree of the regulating valve, f is the frequency of the compressor, T is the temperature of the air conditioner evaporator, and k1 is a matching value used for adjusting the dimensions before and after the formula; k1 is calculated as: and (3) enabling the compressor to work at the maximum frequency, enabling the opening degree of the regulating valve to be maximum, and detecting the temperature of the air conditioner evaporator so as to calculate a matching value k1.
2. The method of calculating the degree of opening of a regulating valve of an air conditioning system for a vehicle according to claim 1, wherein an air conditioning high pressure and an air conditioning low pressure are also detected, a pressure difference between the air conditioning high pressure and the air conditioning low pressure is calculated, and the degree of opening of the regulating valve is also controlled according to the pressure difference so that the degree of opening of the regulating valve has a positive correlation with the reciprocal of the pressure difference.
3. The method of calculating the degree of opening of a regulator valve for a vehicle air conditioning system according to claim 1 or 2, wherein the positive correlation is a direct relationship.
4. A regulating valve opening degree calculation device of a vehicle air conditioning system, characterized by comprising a processor and a memory, wherein the processor is used for processing instructions stored in the memory to realize the following method:
at least collecting influence factors including compressor frequency and evaporator temperature;
controlling the opening degree of a regulating valve at least according to the frequency of a compressor and the temperature of an evaporator, wherein the opening degree of the regulating valve is in positive correlation with the frequency of the compressor and the temperature of the evaporator;
calculating the opening degree of the regulating valve by adopting a first mode or a second mode:
the method I comprises the following steps: calculating the control quantity of the regulating valve according to the temperature change condition of the air conditioner evaporator; multiplying a control coefficient related to the frequency of the compressor on the basis of the control quantity of the regulating valve, and controlling the opening degree of the regulating valve according to the multiplication result; the control coefficient is f/f Forehead (forehead) ，f Forehead (forehead) Is the rated frequency of the compressor;
the second method comprises the following steps: the opening degree of the regulating valve is obtained by adopting the following formula:
β＝k1*f*T
wherein beta is the opening degree of the regulating valve, f is the frequency of the compressor, T is the temperature of the air conditioner evaporator, and k1 is a matching value used for adjusting the dimensions before and after the formula; k1 is calculated as: and (3) enabling the compressor to work at the maximum frequency, enabling the opening degree of the regulating valve to be maximum, and detecting the temperature of the air conditioner evaporator so as to calculate a matching value k1.
5. The apparatus for calculating the degree of opening of a regulation valve of an air conditioning system for a vehicle according to claim 4, wherein a high-pressure of an air conditioner and a low-pressure of the air conditioner are also detected, a pressure difference between the high-pressure of the air conditioner and the low-pressure of the air conditioner is calculated, and the degree of opening of the regulation valve is also controlled according to the pressure difference so that the degree of opening of the regulation valve has a positive correlation with the reciprocal of the pressure difference.
6. The vehicular air conditioning system regulating valve opening degree calculating device according to claim 4 or 5, characterized in that the positive correlation is a direct ratio.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05272820A (en) * | 1992-03-30 | 1993-10-22 | Kubota Corp | Air conditioner |
| JPH08121917A (en) * | 1994-10-24 | 1996-05-17 | Hitachi Ltd | Refrigerant quantity determining device |
| JP2004156844A (en) * | 2002-11-07 | 2004-06-03 | Matsushita Electric Ind Co Ltd | Air conditioner and its control method |
| CN1517626A (en) * | 2003-01-10 | 2004-08-04 | 松下电器产业株式会社 | Air conditioner and its control method |
| JP2009236428A (en) * | 2008-03-27 | 2009-10-15 | Ebara Refrigeration Equipment & Systems Co Ltd | Compression type refrigerating machine |
| CN104633862A (en) * | 2015-02-03 | 2015-05-20 | 深圳麦格米特电气股份有限公司 | Control method of electronic expansion valve in refrigeration operation of variable frequency air conditioner |
| CN106568243A (en) * | 2016-11-09 | 2017-04-19 | 广东美的暖通设备有限公司 | Air conditioner, and control method and device for restricting element in air conditioner |
| JP2018059663A (en) * | 2016-10-05 | 2018-04-12 | 三菱重工サーマルシステムズ株式会社 | Controller, refrigerant circuit system, control method and program |
-
2019
- 2019-01-25 CN CN201910074190.4A patent/CN111483286B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05272820A (en) * | 1992-03-30 | 1993-10-22 | Kubota Corp | Air conditioner |
| JPH08121917A (en) * | 1994-10-24 | 1996-05-17 | Hitachi Ltd | Refrigerant quantity determining device |
| JP2004156844A (en) * | 2002-11-07 | 2004-06-03 | Matsushita Electric Ind Co Ltd | Air conditioner and its control method |
| CN1517626A (en) * | 2003-01-10 | 2004-08-04 | 松下电器产业株式会社 | Air conditioner and its control method |
| JP2009236428A (en) * | 2008-03-27 | 2009-10-15 | Ebara Refrigeration Equipment & Systems Co Ltd | Compression type refrigerating machine |
| CN104633862A (en) * | 2015-02-03 | 2015-05-20 | 深圳麦格米特电气股份有限公司 | Control method of electronic expansion valve in refrigeration operation of variable frequency air conditioner |
| JP2018059663A (en) * | 2016-10-05 | 2018-04-12 | 三菱重工サーマルシステムズ株式会社 | Controller, refrigerant circuit system, control method and program |
| CN106568243A (en) * | 2016-11-09 | 2017-04-19 | 广东美的暖通设备有限公司 | Air conditioner, and control method and device for restricting element in air conditioner |
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