CN110594981A - Method, device and system for indirectly acquiring evaporation temperature of air conditioner and storage medium - Google Patents
Method, device and system for indirectly acquiring evaporation temperature of air conditioner and storage medium Download PDFInfo
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- CN110594981A CN110594981A CN201910860006.9A CN201910860006A CN110594981A CN 110594981 A CN110594981 A CN 110594981A CN 201910860006 A CN201910860006 A CN 201910860006A CN 110594981 A CN110594981 A CN 110594981A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Abstract
The embodiment of the invention discloses a method, a device, a system and a storage medium for indirectly acquiring the evaporating temperature of an air conditioner, wherein the method comprises the following steps: acquiring the temperature of the outer wall of a tube of an air-conditioning evaporator to obtain the temperature of the acquisition tube and the ambient temperature of the air-conditioning evaporator; performing coefficient n on the temperature of the outer wall of the pipe according to the pipe temperature reference value and the obtained environment temperature1The temperature is dynamically compensated for the first time, and the actual real-time tube temperature is obtained; the actual real-time tube temperature process coefficient is n according to the real-time evaporation temperature reference value2And (4) second dynamic compensation, and obtaining a final value of the real-time evaporation temperature. The more accurate evaporating temperature is obtained by utilizing two temperature compensations, and the temperature compensation quantity of the two temperature compensations is a dynamic value which changes according to the changes of the ambient temperature and the evaporating temperature reference valueThe problem of low precision caused by quantitative compensation is avoided, and therefore the control precision of the electronic expansion valve is guaranteed.
Description
Technical Field
The embodiment of the invention relates to the technical field of air conditioners, in particular to a method, a device and a system for indirectly acquiring the evaporation temperature of an air conditioner and a storage medium.
Background
In the control of the electronic expansion valve in the variable frequency air conditioner, the exhaust temperature or the evaporation superheat degree is generally adopted as a parameter for controlling the electronic expansion valve, and the temperature needs to be accurately acquired and measured by any method. Because the temperature probe and the copper pipe have thermal contact resistance, the collected temperature is the temperature of the outer wall of the pipe, and a certain difference value exists between the collected temperature and the actually expected temperature, which has certain influence on the control precision of the electronic expansion valve.
Disclosure of Invention
Therefore, the embodiment of the invention provides a method, a device, a system and a storage medium for indirectly acquiring the evaporation temperature of an air conditioner, so as to solve the technical problems that the temperature measurement precision of an electronic expansion valve is low and the control precision of the electronic expansion valve is poor in the prior art.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
according to a first aspect of the embodiments of the present invention, there is provided an indirect acquisition method of an air conditioner evaporation temperature, the method including:
acquiring the temperature of the outer wall of a tube of an air-conditioning evaporator to obtain the temperature of the acquisition tube and the ambient temperature of the air-conditioning evaporator;
performing coefficient n on the temperature of the outer wall of the pipe according to the pipe temperature reference value and the obtained environment temperature1The temperature is dynamically compensated for the first time, and the actual real-time tube temperature is obtained;
the actual real-time tube temperature process coefficient is n according to the real-time evaporation temperature reference value2And (4) second dynamic compensation, and obtaining a final value of the real-time evaporation temperature.
Further, the coefficient of the temperature of the outer wall of the tube is n according to the acquired environment temperature1The first dynamic compensation of temperature to obtain real-time pipe temperature specifically includes:
detecting the tube temperature by using a high-precision infrared temperature measuring instrument, recording as an actual tube temperature, and taking the actual tube temperature as a tube temperature reference value;
under different environmental temperatures, based on the collected different collection tube temperatures and the actual tube temperatures, establishing a functional relation among the environmental temperatures, the collection tube temperatures and the actual tube temperatures:
Tsg＝f(TC，Th，D1，D2，K2)+n1
wherein: t issgThe actual tube temperature;
TCcollecting the tube temperature;
This ambient temperature;
D1the diameter of the outer wall of the evaporator copper pipe at the contact part with the temperature probe;
D2the diameter of the metal tube is the temperature probe;
K2the average heat transfer coefficient from the outer wall of the copper pipe of the evaporator to the temperature sensor;
n1to correspond to different ambient temperatures ThThe first amount of dynamic compensation.
Further, the actual real-time tube temperature processing coefficient is n according to the real-time evaporation temperature reference value2The second dynamic compensation of the temperature is performed, and a final value of the real-time evaporation temperature is obtained, which specifically comprises:
collecting actual values of the evaporation temperature of the refrigerant in the copper pipe of the evaporator under different operating conditions, and establishing a functional relation between the actual values of the evaporation temperature and the actual pipe temperature according to the actual values of the evaporation temperature and the actual pipe temperature:
Tz＝f(Tsg，Th，K1,D1,d)+n2
wherein: t isZIs the evaporation temperature;
TSgthe actual tube temperature;
This ambient temperature;
D1the diameter of the outer wall of the evaporator copper pipe at the contact part with the temperature probe;
d is the thickness of the copper pipe wall;
K1the average heat transfer coefficient from the refrigerant in the tube to the outer wall of the copper tube of the evaporator;
n2to correspond to different actual pipe temperatures TSgOf the second dynamic compensation amount.
The invention also provides an indirect acquisition device for the evaporating temperature of the air conditioner, which comprises:
the first temperature acquisition unit is used for acquiring the temperature of the outer wall of the air conditioner evaporator to obtain the acquired tube temperature and acquiring the ambient temperature of the air conditioner evaporator;
a primary temperature compensation unit for performing temperature compensation on the outer wall of the tube according to the reference value of the tube temperature and the obtained ambient temperature1The temperature is dynamically compensated for the first time, and the actual real-time tube temperature is obtained;
a second temperature obtaining unit for obtaining the actual real-time tube temperature coefficient n according to the real-time evaporation temperature reference value2And (4) second dynamic compensation, and obtaining a final value of the real-time evaporation temperature.
Further, the primary temperature compensation unit is specifically configured to:
detecting the tube temperature by using a high-precision infrared temperature measuring instrument, recording as an actual tube temperature, and taking the actual tube temperature as a tube temperature reference value;
under different environmental temperatures, based on the collected different collection tube temperatures and the actual tube temperatures, establishing a functional relation among the environmental temperatures, the collection tube temperatures and the actual tube temperatures:
Tsg＝f(TC，Th，D1，D2，K2)+n1
wherein: tsg is the actual tube temperature;
TC is collection tube temperature;
th is ambient temperature;
D1the diameter of the outer wall of the evaporator copper pipe at the contact part with the temperature probe;
D2the diameter of the metal tube is the temperature probe;
K2the average heat transfer coefficient from the outer wall of the copper pipe of the evaporator to the temperature sensor;
n1to correspond to different ambient temperatures ThThe first amount of dynamic compensation.
Further, the second temperature obtaining unit is specifically configured to:
collecting actual values of the evaporation temperature of the refrigerant in the copper pipe of the evaporator under different operating conditions, and establishing a functional relation between the actual values of the evaporation temperature and the actual pipe temperature according to the actual values of the evaporation temperature and the actual pipe temperature:
Tz＝f(Tsg，Th，K1,D1,d)+n2
wherein: t isZIs the evaporation temperature;
TSgthe actual tube temperature;
This ambient temperature;
D1the diameter of the outer wall of the evaporator copper pipe at the contact part with the temperature probe;
d is the thickness of the copper pipe wall;
K1the average heat transfer coefficient from the refrigerant in the tube to the outer wall of the copper tube of the evaporator;
n2to correspond to different actual pipe temperatures TSgOf the second dynamic compensation amount.
The invention also provides an indirect acquisition system of the evaporation temperature of the air conditioner, which comprises: a processor and a memory;
the memory is to store one or more program instructions;
the processor is configured to execute one or more program instructions to perform the method as described above.
The present invention also provides a computer storage medium having one or more program instructions embodied therein for executing the method as described above by an air conditioner evaporating temperature indirect acquiring system.
According to the method and the device for indirectly acquiring the evaporating temperature of the air conditioner, the accurate evaporating temperature is acquired by utilizing two times of temperature compensation, the temperature compensation amount of the two times of temperature compensation is a dynamic value which changes according to the change of the ambient temperature and the evaporating temperature reference value, and the problem of low accuracy caused by quantitative compensation is solved. Therefore, the method and the device for indirectly acquiring the evaporation temperature of the air conditioner can accurately acquire the evaporation temperature of the air conditioner, so that the control precision of the electronic expansion valve is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a flowchart of an embodiment of a method for indirectly obtaining an evaporating temperature of an air conditioner according to the present invention;
FIG. 2 is a block diagram of an embodiment of an indirect obtaining apparatus for an evaporation temperature of an air conditioner according to the present invention;
fig. 3 is a block diagram of an embodiment of an indirect acquisition system for the evaporating temperature of an air conditioner according to the present invention.
Description of reference numerals:
101-first temperature acquisition unit 102-primary temperature compensation unit 103-second temperature acquisition unit
201-processor 202-memory
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In a specific embodiment, the indirect acquisition method of the air conditioner evaporation temperature provided by the invention is used for the variable frequency air conditioner, and the indirect acquisition method of the air conditioner evaporation temperature not only can measure the evaporation temperature in the evaporator copper pipe, but also can measure and calculate the temperature in the air conditioner copper pipe by using the indirect method. As shown in fig. 1, the method includes:
s1: acquiring the temperature of the outer wall of a tube of an air-conditioning evaporator to obtain the temperature of the acquisition tube and the ambient temperature of the air-conditioning evaporator;
s2: performing coefficient n on the temperature of the outer wall of the pipe according to the pipe temperature reference value and the obtained environment temperature1The temperature is dynamically compensated for the first time, and the actual real-time tube temperature is obtained; the step S2 specifically includes:
detecting the tube temperature by using a high-precision infrared temperature measuring instrument, recording as an actual tube temperature, and taking the actual tube temperature as a tube temperature reference value;
under different environmental temperatures, based on the collected different collection tube temperatures and the actual tube temperatures, establishing a functional relation among the environmental temperatures, the collection tube temperatures and the actual tube temperatures:
Tsg＝f(TC，Th，D1，D2，K2)+n1
wherein: t issgThe actual tube temperature;
TCcollecting the tube temperature;
This ambient temperature;
D1the diameter of the outer wall of the evaporator copper pipe at the contact part with the temperature probe;
D2the diameter of the metal tube is the temperature probe;
K2the average heat transfer coefficient from the outer wall of the copper pipe of the evaporator to the temperature sensor;
n1to correspond to different ambient temperatures ThThe first amount of dynamic compensation.
S3: the actual real-time tube temperature process coefficient is n according to the real-time evaporation temperature reference value2OfPerforming second dynamic compensation, and obtaining a final value of the real-time evaporation temperature; at this time, the actual reference value of the real-time evaporation temperature of the air conditioner evaporator is acquired in the experiment, and the purpose is to obtain a fitting formula of the evaporation temperature and a compensation coefficient n2 through the reference value. The step S3 specifically includes:
collecting actual values of the evaporation temperature of the refrigerant in the copper pipe of the evaporator under different operating conditions, and establishing a functional relation between the actual values of the evaporation temperature and the actual pipe temperature according to the actual values of the evaporation temperature and the actual pipe temperature:
Tz＝f(Tsg，Th，K1,D1,d)+n2
wherein: t isZIs the evaporation temperature;
TSgthe actual tube temperature;
This ambient temperature;
D1the diameter of the outer wall of the evaporator copper pipe at the contact part with the temperature probe;
d is the thickness of the copper pipe wall;
K1the average heat transfer coefficient from the refrigerant in the tube to the outer wall of the copper tube of the evaporator;
n2to correspond to different actual pipe temperatures TSgOf the second dynamic compensation amount.
The temperature compensation coefficient TZAnd TSgThe fitting equation is used to obtain n1 and n2, which are compensation quantities of the fitting value and the actual value, and it should be understood that the fitting process is a conventional technique in the art and is not described herein. The dynamic temperature compensation means real-time temperature compensation, and on the other hand, the dynamic temperature compensation is also performed in accordance with the rate of change of temperature with respect to time.
In the above embodiment, the indirect obtaining method for the evaporation temperature of the air conditioner provided by the invention obtains the accurate evaporation temperature by using two temperature compensations, and the temperature compensation amount of the two temperature compensations is a dynamic value that changes according to the changes of the ambient temperature and the evaporation temperature reference value, thereby avoiding the problem of low accuracy caused by quantitative compensation. Therefore, the method and the system for indirectly acquiring the evaporation temperature of the air conditioner can accurately acquire the evaporation temperature of the air conditioner, so that the control precision of the electronic expansion valve is ensured.
In addition to the above method, the present invention also provides an indirect acquisition apparatus for air conditioner evaporating temperature, which is used for implementing the above method, and as shown in fig. 2, the apparatus includes:
the first temperature acquisition unit 101 is used for acquiring the temperature of the outer wall of the air conditioner evaporator to obtain an acquired tube temperature and acquiring the ambient temperature of the air conditioner evaporator;
a primary temperature compensation unit 102, configured to perform a coefficient n on the outer wall temperature of the tube according to the tube temperature reference value and the obtained ambient temperature1The temperature is dynamically compensated for the first time, and the actual real-time tube temperature is obtained; the primary temperature compensation unit is specifically configured to:
detecting the tube temperature by using a high-precision infrared temperature measuring instrument, recording as an actual tube temperature, and taking the actual tube temperature as a tube temperature reference value;
under different environmental temperatures, based on the collected different collection tube temperatures and the actual tube temperatures, establishing a functional relation among the environmental temperatures, the collection tube temperatures and the actual tube temperatures:
Tsg＝f(TC，Th，D1，D2，K2)+n1
wherein: tsg is the actual tube temperature;
TC is collection tube temperature;
th is ambient temperature;
D1the diameter of the outer wall of the evaporator copper pipe at the contact part with the temperature probe;
D2the diameter of the metal tube is the temperature probe;
K2the average heat transfer coefficient from the outer wall of the copper pipe of the evaporator to the temperature sensor;
n1to correspond to different ambient temperatures ThThe first amount of dynamic compensation.
A second temperature obtaining unit 103, configured to obtain an actual real-time tube temperature progression coefficient n according to the real-time evaporation temperature reference value2The temperature of the evaporator is dynamically compensated for the second time, and the final value of the real-time evaporation temperature is obtained; the second temperature acquisition unit is specifically used for：
Collecting actual values of the evaporation temperature of the refrigerant in the copper pipe of the evaporator under different operating conditions, wherein the collected actual values are the actual reference value of the real-time evaporation temperature, and establishing a functional relation between the actual values of the evaporation temperature and the actual pipe temperature according to the actual values of the evaporation temperature and the actual pipe temperature:
Tz＝f(Tsg，Th，K1,D1,d)+n2
wherein: t isZIs the evaporation temperature;
TSgthe actual tube temperature;
This ambient temperature;
D1the diameter of the outer wall of the evaporator copper pipe at the contact part with the temperature probe;
d is the thickness of the copper pipe wall;
K1the average heat transfer coefficient from the refrigerant in the tube to the outer wall of the copper tube of the evaporator;
n2to correspond to different actual pipe temperatures TSgOf the second dynamic compensation amount.
In the above embodiment, the indirect obtaining device for the evaporation temperature of the air conditioner provided by the invention obtains the accurate evaporation temperature by using two temperature compensations, and the temperature compensation amount of the two temperature compensations is a dynamic value that changes according to the changes of the ambient temperature and the evaporation temperature reference value, thereby avoiding the problem of low accuracy caused by quantitative compensation. Therefore, the method and the system for indirectly acquiring the evaporation temperature of the air conditioner can accurately acquire the evaporation temperature of the air conditioner, so that the control precision of the electronic expansion valve is ensured.
According to a third aspect of the embodiments of the present invention, the present invention further provides an indirect obtaining system of an air conditioner evaporating temperature, as shown in fig. 3, the system including: a processor 201 and a memory 202;
the memory is to store one or more program instructions;
the processor is configured to execute one or more program instructions to perform the method as described above.
In correspondence with the above embodiments, embodiments of the present invention also provide a computer storage medium containing one or more program instructions therein. Wherein the one or more program instructions are for executing the method as described above by an air conditioner evaporating temperature indirect obtaining system.
In an embodiment of the invention, the processor may be an integrated circuit chip having signal processing capability. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete Gate or transistor logic device, discrete hardware component.
The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The processor reads the information in the storage medium and completes the steps of the method in combination with the hardware.
The storage medium may be a memory, for example, which may be volatile memory or nonvolatile memory, or which may include both volatile and nonvolatile memory.
The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory.
The volatile Memory may be a Random Access Memory (RAM) which serves as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), SLDRAM (SLDRAM), and Direct Rambus RAM (DRRAM).
The storage media described in connection with the embodiments of the invention are intended to comprise, without being limited to, these and any other suitable types of memory.
Those skilled in the art will appreciate that the functionality described in the present invention may be implemented in a combination of hardware and software in one or more of the examples described above. When software is applied, the corresponding functionality may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The above embodiments are only for illustrating the embodiments of the present invention and are not to be construed as limiting the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the embodiments of the present invention shall be included in the scope of the present invention.
Claims (8)
1. An indirect acquisition method for the evaporation temperature of an air conditioner is characterized by comprising the following steps:
acquiring the temperature of the outer wall of a tube of an air-conditioning evaporator to obtain the temperature of the acquisition tube and the ambient temperature of the air-conditioning evaporator;
performing coefficient n on the temperature of the outer wall of the pipe according to the pipe temperature reference value and the obtained environment temperature1The temperature is dynamically compensated for the first time, and the actual real-time tube temperature is obtained;
the actual real-time tube temperature process coefficient is n according to the real-time evaporation temperature reference value2And (4) second dynamic compensation, and obtaining a final value of the real-time evaporation temperature.
2. The indirect acquisition method for the evaporation temperature of the air conditioner as claimed in claim 1, wherein the coefficient for the temperature of the outer wall of the tube according to the acquired ambient temperature is n1The first dynamic compensation of temperature to obtain real-time pipe temperature specifically includes:
detecting the tube temperature by using a high-precision infrared temperature measuring instrument, recording as an actual tube temperature, and taking the actual tube temperature as a tube temperature reference value;
under different environmental temperatures, based on the collected different collection tube temperatures and the actual tube temperatures, establishing a functional relation among the environmental temperatures, the collection tube temperatures and the actual tube temperatures:
Tsg＝f(TC，Th，D1，D2，K2)+n1
wherein: t issgThe actual tube temperature;
TCcollecting the tube temperature;
This ambient temperature;
D1the diameter of the outer wall of the evaporator copper pipe at the contact part with the temperature probe;
D2the diameter of the metal tube is the temperature probe;
K2the average heat transfer coefficient from the outer wall of the copper pipe of the evaporator to the temperature sensor;
n1to correspond to different ambient temperatures ThThe first amount of dynamic compensation.
3. The indirect acquisition method of the evaporation temperature of the air conditioner as claimed in claim 2, wherein the actual real-time tube temperature processing coefficient is n according to the real-time evaporation temperature reference value2The second dynamic compensation of the temperature is performed, and a final value of the real-time evaporation temperature is obtained, which specifically comprises:
collecting actual values of the evaporation temperature of the refrigerant in the copper pipe of the evaporator under different operating conditions, and establishing a functional relation between the actual values of the evaporation temperature and the actual pipe temperature according to the actual values of the evaporation temperature and the actual pipe temperature:
Tz＝f(Tsg，Th，K1,D1,d)+n2
wherein: t isZIs the evaporation temperature;
TSgthe actual tube temperature;
This ambient temperature;
D1the diameter of the outer wall of the evaporator copper pipe at the contact part with the temperature probe;
d is the thickness of the copper pipe wall;
K1the average heat transfer coefficient from the refrigerant in the tube to the outer wall of the copper tube of the evaporator;
n2to correspond to different actual pipe temperatures TSgOf the second dynamic compensation amount.
4. An indirect acquisition device of air conditioner evaporating temperature, which is characterized by comprising:
the first temperature acquisition unit is used for acquiring the temperature of the outer wall of the air conditioner evaporator to obtain the acquired tube temperature and acquiring the ambient temperature of the air conditioner evaporator;
a primary temperature compensation unit for performing temperature compensation on the outer wall of the tube according to the reference value of the tube temperature and the obtained ambient temperature1The temperature is dynamically compensated for the first time, and the actual real-time tube temperature is obtained;
a second temperature obtaining unit for obtaining the actual real-time tube temperature coefficient n according to the real-time evaporation temperature reference value2And (4) second dynamic compensation, and obtaining a final value of the real-time evaporation temperature.
5. The indirect obtaining device of the evaporation temperature of the air conditioner according to claim 4, wherein the primary temperature compensation unit is specifically configured to:
detecting the tube temperature by using a high-precision infrared temperature measuring instrument, recording as an actual tube temperature, and taking the actual tube temperature as a tube temperature reference value;
under different environmental temperatures, based on the collected different collection tube temperatures and the actual tube temperatures, establishing a functional relation among the environmental temperatures, the collection tube temperatures and the actual tube temperatures:
Tsg＝f(TC，Th，D1，D2，K2)+n1
wherein: tsg is the actual tube temperature;
TC is collection tube temperature;
th is ambient temperature;
D1the diameter of the outer wall of the evaporator copper pipe at the contact part with the temperature probe;
D2the diameter of the metal tube is the temperature probe;
K2the average heat transfer coefficient from the outer wall of the copper pipe of the evaporator to the temperature sensor;
n1to correspond to different ambient temperatures ThThe first amount of dynamic compensation.
6. The indirect acquiring device of air conditioner evaporating temperature of claim 5, wherein the second temperature acquiring unit is specifically configured to:
collecting actual values of the evaporation temperature of the refrigerant in the copper pipe of the evaporator under different operating conditions, and establishing a functional relation between the actual values of the evaporation temperature and the actual pipe temperature according to the actual values of the evaporation temperature and the actual pipe temperature:
Tz＝f(Tsg，Th，K1,D1,d)+n2
wherein: t isZIs the evaporation temperature;
TSgthe actual tube temperature;
This ambient temperature;
D1the diameter of the outer wall of the evaporator copper pipe at the contact part with the temperature probe;
d is the thickness of the copper pipe wall;
K1the average heat transfer coefficient from the refrigerant in the tube to the outer wall of the copper tube of the evaporator;
n2to correspond to different actual pipe temperatures TSgOf the second dynamic compensation amount.
7. An indirect air conditioner evaporation temperature acquisition system, characterized in that the system comprises: a processor and a memory;
the memory is to store one or more program instructions;
the processor, configured to execute one or more program instructions to perform the method of any of claims 1-3.
8. A computer storage medium comprising one or more program instructions for executing the method of any one of claims 1-3 by an air conditioner evaporating temperature indirect obtaining system.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114594807A (en) * | 2022-03-07 | 2022-06-07 | 黄山奥仪电器有限公司 | Constant temperature control system based on VTI |
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| CN105571067A (en) * | 2016-01-04 | 2016-05-11 | 青岛海尔空调电子有限公司 | Multiple online control method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114594807A (en) * | 2022-03-07 | 2022-06-07 | 黄山奥仪电器有限公司 | Constant temperature control system based on VTI |
| CN114594807B (en) * | 2022-03-07 | 2023-02-28 | 黄山奥仪电器有限公司 | Constant temperature control system based on VTI |
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