CN115164454A - Control method and control device for electronic expansion valve body - Google Patents
Control method and control device for electronic expansion valve body Download PDFInfo
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- CN115164454A CN115164454A CN202210853665.1A CN202210853665A CN115164454A CN 115164454 A CN115164454 A CN 115164454A CN 202210853665 A CN202210853665 A CN 202210853665A CN 115164454 A CN115164454 A CN 115164454A
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- 238000000034 method Methods 0.000 title claims abstract description 80
- 239000003507 refrigerant Substances 0.000 claims abstract description 90
- 230000010412 perfusion Effects 0.000 claims abstract 2
- 238000003860 storage Methods 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 description 38
- 238000005086 pumping Methods 0.000 description 11
- 238000012545 processing Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 238000005429 filling process Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B45/00—Arrangements for charging or discharging refrigerant
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The application provides a control method and a control device of an electronic expansion valve body, wherein the method comprises the following steps: under the condition of receiving a preset signal, supplying power to an electromagnetic coil so as to open the electronic expansion valve body to a preset opening degree, wherein the preset signal is sent by a signal transmitter, and the electromagnetic coil is sleeved on the electronic expansion valve body; and generating a feedback signal and sending the feedback signal under the condition that the electronic expansion valve body is opened to a preset opening degree, wherein the feedback signal is a signal for triggering the execution of vacuumizing and/or refrigerant filling work. The application realizes automatic operation, ensures that the opening degree of the electronic expansion valve is controllable, and avoids the problems that the opening degree of the electronic expansion valve is inconsistent due to insufficient stability of manual operation, the vacuum degree or the refrigerant perfusion amount is influenced, and the quality of an air conditioner and the production efficiency are further influenced.
Description
Technical Field
The present invention relates to the field of electronic expansion valve control, and in particular, to a control method and a control device for an electronic expansion valve body, a computer-readable storage medium, a processor, a control apparatus for an electronic expansion valve body, and an electronic expansion valve system.
Background
In the in-vitro machine manufacturing process of the air conditioner, the vacuum degree of the condenser and the filling amount of the refrigerant are very critical to the use safety and the performance of the air conditioner, and the vacuumizing and the filling are two very important processes when the refrigerant is filled into the split air conditioner outdoor unit. For the split outdoor unit with the electronic expansion valve, the electronic expansion valve must be opened before vacuumizing and filling, so that the problem that part of air is not extracted or refrigerant is not filled abnormally due to the closing of the electronic expansion valve is avoided.
At present, before the two processes, an electronic expansion valve opening tool is manually used for tool opening, the operation flow of manually controlled vacuumizing and filling stations is shown in fig. 1, the operation schematic diagram of the conventional electronic expansion valve opening is shown in fig. 2 to 4, and the electromagnetic coil 100 is required to be sleeved on the electronic expansion valve body 102 for manual rotation and opening during manual opening. However, due to the problems of insufficient stability, low consistency and the like of manual operation, the electronic expansion valve is blocked when the opening force of the electronic expansion valve is too large in production, and the problems of low filling speed, weight deviation of filling refrigerants and the like caused by insufficient opening degree seriously affect the production efficiency and quality and have larger production safety.
Therefore, a method for automatically opening the electronic expansion valve according to a predetermined standard is needed to ensure the opening consistency of the electronic expansion valve and ensure the quality of the air conditioner product.
The above information disclosed in this background section is only for enhancement of understanding of the background of the technology described herein and, therefore, it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.
Disclosure of Invention
The main objective of the present application is to provide a control method, a control device, a computer readable storage medium, a processor, a control device of an electronic expansion valve, and an electronic expansion valve system for controlling the electronic expansion valve, so as to solve the problem that the degree of opening of the electronic expansion valve is difficult to control during the process of vacuuming or refrigerant filling of an outdoor unit of an air conditioner in the prior art, which affects the degree of vacuum or the refrigerant filling amount.
According to an aspect of an embodiment of the present invention, there is provided a control method of an electronic expansion valve body, including: under the condition of receiving a preset signal, supplying power to an electromagnetic coil to open the electronic expansion valve body to a preset opening degree, wherein the preset signal is sent by a signal transmitter, and the electromagnetic coil is sleeved on the electronic expansion valve body; and generating a feedback signal and sending the feedback signal under the condition that the electronic expansion valve body is opened to the preset opening degree, wherein the feedback signal is a signal for triggering the execution of vacuumizing and/or refrigerant filling work.
Optionally, in case of receiving a predetermined signal, supplying power to the solenoid coil to open the electronic expansion valve body to a predetermined opening degree, including: upon receiving the predetermined signal, energizing the solenoid coil to cause the electronic expansion valve body to open; determining whether the electronic expansion valve body is opened to the predetermined opening degree; and under the condition that the electronic expansion valve body is not opened to the preset opening degree, continuing to supply power to the electromagnetic coil until the electronic expansion valve body is opened to the preset opening degree.
Optionally, determining whether the electronic expansion valve body is opened to the predetermined opening degree includes: acquiring the electrifying time of the electromagnetic coil; and under the condition that the electrifying time length is greater than or equal to a first preset time length, determining that the electronic expansion valve body is opened to the preset opening degree.
Optionally, determining whether the electronic expansion valve body is opened to the predetermined opening degree includes: acquiring a real-time current value of the opened electronic expansion valve body; and determining that the electronic expansion valve body is opened to the preset opening degree under the condition that the change rate of the real-time current value is greater than or equal to a preset threshold value.
Optionally, in a case where the electronic expansion valve body is not opened to the predetermined opening degree, continuing to supply power to the electromagnetic coil until the electronic expansion valve body is opened to the predetermined opening degree includes: a power supply step of continuing to supply power to the electromagnetic coil when the electronic expansion valve body is not opened to the predetermined opening degree; a determination step of determining whether the electronic expansion valve body is opened to the predetermined opening degree; and a circulating step of, when the electronic expansion valve body is not opened to the predetermined opening degree, sequentially executing the power supplying step and the determining step until the electronic expansion valve body is opened to the predetermined opening degree.
Optionally, in a case where the electronic expansion valve body is not opened to the predetermined opening after the electromagnetic coil is powered for a second predetermined period of time, the method further comprises: and increasing the power supply current and/or the power supply voltage supplied to the electromagnetic coil, so that the increased electronic expansion valve body is opened to the preset opening degree.
According to another aspect of the embodiment of the present invention, there is also provided a control device for an electronic expansion valve body, including a power supply unit and a generation unit, where the power supply unit is configured to supply power to an electromagnetic coil when receiving a predetermined signal, so as to open the electronic expansion valve body to a predetermined opening degree, the predetermined signal is sent by a signal transmitter, and the electromagnetic coil is sleeved on the electronic expansion valve body; the generating unit is used for generating and sending a feedback signal under the condition that the electronic expansion valve body is opened to the preset opening degree, wherein the feedback signal is a signal for triggering the execution of vacuumizing and/or refrigerant filling work.
According to still another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium including a stored program, wherein the program executes any one of the methods.
According to another aspect of the embodiments of the present invention, there is also provided a processor, configured to run a program, where the program executes to perform any one of the methods.
According to another aspect of the embodiment of the present invention, there is also provided a control device for an electronic expansion valve body, comprising an electromagnetic coil and a control device for the electronic expansion valve body, wherein the electromagnetic coil is configured to be sleeved on the electronic expansion valve body to be controlled; the control apparatus comprises one or more processors, memory, and one or more programs stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for performing any of the methods described herein.
Optionally, the control device further includes a power supply device electrically connected to the electromagnetic coil through the control device.
Optionally, the control device further includes a housing, the housing has an accommodating space, the electromagnetic coil, the control device and the power supply device are all located in the housing, and the electromagnetic coil is sleeved on the electronic expansion valve body through the housing.
According to another aspect of the embodiments of the present invention, there is also provided an electronic expansion valve system, including an electronic expansion valve body and any one of the control devices of the electronic expansion valve body, wherein the control device is detachably sleeved on the electronic expansion valve body.
According to the technical scheme, in the control method of the electronic expansion valve body, firstly, under the condition that a preset signal sent by a signal transmitter is received, the air conditioner to be processed comprising the electronic expansion valve body reaches a vacuumizing and/or refrigerant filling station needing to be opened by an electromagnetic valve body, and at the moment, an electromagnetic coil sleeved on the electronic expansion valve body is powered, so that the electronic expansion valve body is opened to a preset opening degree under the action of electromagnetic force; and then, under the condition that the electronic expansion valve body is opened to the preset opening degree, generating a feedback signal for triggering the vacuumizing and/or refrigerant filling operation and sending the feedback signal to enable the vacuumizing equipment and/or the refrigerant filling equipment to start to work so as to vacuumize and/or fill the air conditioner to be processed with the refrigerant. Compared with the prior art, the electronic expansion valve is difficult to control in the process of vacuumizing or refrigerant filling of the outdoor unit of the air conditioner, and the problem of vacuum degree or refrigerant filling amount is influenced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
FIG. 1 shows a flow chart of the operation of a manually controlled evacuation and infusion station;
FIG. 2 illustrates a prior art electronic expansion valve opening operation schematic;
FIG. 3 shows a side view of FIG. 2;
FIG. 4 shows a top view of FIG. 2;
FIG. 5 illustrates a flow chart of a method of controlling an electronic expansion valve body according to an embodiment of the present application;
FIG. 6 shows a schematic structural diagram of a signal transmitter according to an embodiment of the present application;
FIG. 7 is an oblique view of FIG. 6;
FIG. 8 shows a schematic view of a control device of an electronic expansion valve body according to an embodiment of the present application;
fig. 9 shows a schematic structural view of a control apparatus of an electronic expansion valve according to an embodiment of the present application;
fig. 10 shows a control flowchart of a control apparatus of an electronic expansion valve body according to an embodiment of the present application.
Wherein the figures include the following reference numerals:
100. an electromagnetic coil; 101. a control device; 102. an electronic expansion valve body; 103. a power supply device; 104. a housing; 105. a housing upper cover; 106. a housing lower cover; 107. a housing body; 108. a screw; 109. coil interface visor.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. 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 application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Also, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.
As mentioned in the background art, in the prior art, the opening degree of an electronic expansion valve is difficult to control during the process of vacuuming or filling refrigerant in an outdoor unit of an air conditioner, and the vacuum degree or the refrigerant filling amount is affected.
According to an embodiment of the present application, a method of controlling an electronic expansion valve body is provided.
Fig. 5 is a flowchart of a control method of an electronic expansion valve body according to an embodiment of the present application. As shown in fig. 5, the method comprises the steps of:
step S101, under the condition that a preset signal is received, supplying power to an electromagnetic coil to open an electronic expansion valve body to a preset opening degree, wherein the preset signal is sent by a signal transmitter, and the electromagnetic coil is sleeved on the electronic expansion valve body;
and S102, generating a feedback signal and sending the feedback signal under the condition that the electronic expansion valve body is opened to the preset opening degree, wherein the feedback signal is a signal for triggering the execution of vacuumizing and/or refrigerant filling work.
In the control method of the electronic expansion valve body, firstly, under the condition of receiving a preset signal sent by a signal transmitter, the air conditioner to be processed comprising the electronic expansion valve body reaches a vacuumizing and/or refrigerant filling station needing to be opened by an electromagnetic valve body, and at the moment, an electromagnetic coil sleeved on the electronic expansion valve body is powered, so that the electronic expansion valve body is opened to a preset opening degree under the action of electromagnetic force; and then, under the condition that the electronic expansion valve body is opened to the preset opening degree, generating a feedback signal for triggering the vacuumizing and/or refrigerant filling operation and sending the feedback signal, so that the vacuumizing equipment and/or the refrigerant filling equipment start to work to vacuumize and/or fill the refrigerant into the air conditioner to be processed. Compared with the prior art, the electronic expansion valve is difficult to control in the process of vacuumizing or refrigerant filling of the outdoor unit of the air conditioner, and the problem of vacuum degree or refrigerant filling amount is influenced.
Specifically, the signal generator is installed on a station corresponding to a predetermined process, and the predetermined process comprises a vacuumizing process and/or a refrigerant filling process of an air conditioner.
In a specific embodiment, the electronic expansion valve body is an electronic expansion valve body on a separate outdoor unit of an air conditioner. As shown in fig. 6 and 7, the signal emitter is an infrared signal emitter, the predetermined signal is an infrared signal, and the signal emitter may be installed at a loading position of the vacuum pumping station and/or the refrigerant filling station, and emits the infrared signal at a predetermined frequency, for example, 1 s/time. Of course. The signal emitter is not limited to be arranged at the feeding position, and can also be arranged at other positions of the vacuumizing station and/or the refrigerant filling station as long as the air conditioner to be processed is ensured to pass through the position before being vacuumized or filled with the refrigerant.
In another specific embodiment, the feedback signal is also an infrared signal, and the feedback signal is sent to the signal transmitter, and the signal transmitter triggers the vacuum-pumping device and/or the refrigerant-filling device to start operating. The signal transmitter is powered by 12V direct current, and can also be powered by a 220V-12V adapter.
In practical applications, the predetermined opening degree may be set according to a standard specification of evacuation and/or refrigerant filling.
In order to further ensure that the opening degree of the electronic expansion valve is controllable, and further ensure that the electronic expansion valve starts to perform vacuum pumping and/or refrigerant filling work when reaching a preset opening degree, according to a specific embodiment of the present application, under the condition of receiving a preset signal, power is supplied to the electromagnetic coil, so that the electronic expansion valve body is opened to the preset opening degree, the method comprises the following steps: under the condition of receiving the preset signal, supplying power to the electromagnetic coil to open the electronic expansion valve body; determining whether the electronic expansion valve body is opened to the preset opening degree; and under the condition that the electronic expansion valve body is not opened to the preset opening degree, continuously supplying power to the electromagnetic coil until the electronic expansion valve body is opened to the preset opening degree. Therefore, the opening quality of the electronic expansion valve is further ensured to be higher.
According to another specific embodiment of the present application, determining whether the electronic expansion valve body is opened to the predetermined opening degree includes: acquiring the electrifying time of the electromagnetic coil; and determining that the electronic expansion valve body is opened to the preset opening degree under the condition that the electrifying time length is greater than or equal to a first preset time length. Whether the electronic expansion valve body reaches the preset opening degree can be monitored simply and accurately by determining whether the electrifying time of the electromagnetic coil reaches the first preset time, and the opening degree of the electronic expansion valve is further ensured to be controllable.
Of course, the manner of determining whether the electronic expansion valve body is opened to the predetermined opening degree is not limited to the above manner, and a person skilled in the art may flexibly select any suitable manner to determine the opening degree of the electronic expansion valve body, and in yet another embodiment of the present application, determining whether the electronic expansion valve body is opened to the predetermined opening degree includes: acquiring a real-time current value of the opened electronic expansion valve body; and determining that the electronic expansion valve body is opened to the preset opening degree when the change rate of the real-time current value is greater than or equal to a preset threshold value. By obtaining the current value transformation rate of the electronic expansion valve body, the reverse acting force of the electronic expansion valve body can be determined, the actual opening degree of the electronic expansion valve is further determined, the opening degree of the electronic expansion valve is further automatically judged, the vacuum pumping operation and/or the refrigerant filling operation are further ensured to be carried out under the condition that the electronic expansion valve body is opened to the required opening degree, and the problems that the opening degree stability and consistency are poor and the quality and the safety cannot be ensured due to the fact that the electronic expansion valve is manually operated are further avoided.
In order to further ensure that the opening degree of the electronic expansion valve is controllable, according to another specific embodiment of the present application, in a case that the electronic expansion valve body is not opened to the predetermined opening degree, the step of continuing to supply power to the electromagnetic coil until the electronic expansion valve body is opened to the predetermined opening degree includes: a power supply step of continuing to supply power to the electromagnetic coil when the electronic expansion valve body is not opened to the predetermined opening degree; a determination step of determining whether or not the electronic expansion valve body is opened to the predetermined opening degree; and a circulation step of sequentially executing the power supply step and the determination step until the electronic expansion valve body is opened to the predetermined opening degree, when the electronic expansion valve body is not opened to the predetermined opening degree. It should be noted that, in the case where the electronic expansion valve body is opened to the predetermined opening degree as a result of the determining step, the circulating step is not executed.
In an actual application process, there is a case that the electronic expansion valve is not opened to a required opening degree after a predetermined current or a predetermined voltage is supplied to the electromagnetic coil for a period of time, in this case, in order to further ensure that the processing efficiency is high, in a specific embodiment, after the electromagnetic coil is supplied with power for a second predetermined time period, in a case that the electronic expansion valve body is not opened to the predetermined opening degree, the method further includes: and increasing the power supply current and/or the power supply voltage supplied to the electromagnetic coil so that the increased electronic expansion valve body is opened to the predetermined opening degree. This makes it possible to make the electronic expansion valve reach the predetermined opening degree relatively quickly.
The method realizes automatic opening, automatic vacuum pumping and automatic refrigerant filling of the electronic expansion valve body, and reduces personnel operation compared with the prior art. Because the opening force and the opening time of the electronic expansion valve realize standardized operation through automation, the problems that the potential safety hazard of residual air of a condenser of the outdoor unit of the split air conditioner is caused due to small opening degree, the weight of a poured refrigerant is inaccurate due to small opening degree and the like are solved.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.
The embodiment of the present application further provides a control device of an electronic expansion valve body, and it should be noted that the control device of the electronic expansion valve body according to the embodiment of the present application may be used to execute the control method for the electronic expansion valve body according to the embodiment of the present application. The following describes a control device for an electronic expansion valve body according to an embodiment of the present application.
Fig. 8 is a schematic view of a control device of an electronic expansion valve body according to an embodiment of the present application. As shown in fig. 8, the apparatus includes a power supply unit 10 and a generating unit 20, wherein the power supply unit 10 is configured to supply power to an electromagnetic coil when receiving a predetermined signal, so as to open an electronic expansion valve body to a predetermined opening degree, the predetermined signal is sent by a signal transmitter located at a station where a predetermined process is processed, the predetermined process includes a vacuum-pumping process and/or a refrigerant-filling process of an air conditioner, and the electromagnetic coil is sleeved on the electronic expansion valve body; the generating unit 20 is configured to generate and send a feedback signal when the electronic expansion valve body is opened to the predetermined opening degree, where the feedback signal is a signal for triggering the vacuum pumping and/or the refrigerant filling operation.
The control device of the electronic expansion valve body is used for indicating that the air conditioner to be processed comprising the electronic expansion valve body reaches a vacuumizing and/or refrigerant filling station needing to be opened by the electromagnetic valve body under the condition of receiving a preset signal sent by the signal transmitter, and supplying power to the electromagnetic coil sleeved on the electronic expansion valve body through the power supply unit so that the electronic expansion valve body is opened to a preset opening degree under the action of electromagnetic force; and generating a feedback signal triggering the vacuumizing and/or refrigerant filling operation and sending the feedback signal under the condition that the electronic expansion valve body is opened to the preset opening degree through the generating unit, so that the vacuumizing equipment and/or the refrigerant filling equipment start to work, and the air conditioner to be processed is vacuumized and/or filled with the refrigerant. Compared with the prior art, the electronic expansion valve is difficult to control in the process of vacuumizing or refrigerant filling of the outdoor unit of the air conditioner, and the problem of vacuum degree or refrigerant filling amount is influenced.
Specifically, the signal generator is installed on a station corresponding to a predetermined process, and the predetermined process comprises a vacuumizing process and/or a refrigerant filling process of an air conditioner.
In a specific embodiment, the electronic expansion valve body is an electronic expansion valve body on a split air conditioner outdoor unit. As shown in fig. 6 and 7, the signal emitter is an infrared signal emitter, the predetermined signal is an infrared signal, and the signal emitter may be installed at a material loading position of the vacuum pumping station and/or the refrigerant filling station, and emits the infrared signal at a predetermined frequency, for example, 1 s/time. Of course. The signal emitter is not limited to be arranged at the feeding position, and can also be arranged at other positions of the vacuumizing station and/or the refrigerant filling station as long as the air conditioner to be processed is ensured to pass through the position before being vacuumized or filled with the refrigerant.
In another specific embodiment, the feedback signal is also an infrared signal, and the feedback signal is sent to the signal transmitter, and the signal transmitter triggers the vacuum-pumping device and/or the refrigerant-filling device to start operating. The signal transmitter is powered by 12V direct current, and can also be powered by a 220V-12V adapter.
In practical applications, the predetermined opening degree may be set according to a standard specification of evacuation and/or refrigerant filling.
In order to further ensure that the opening degree of the electronic expansion valve is controllable, and further ensure that the electronic expansion valve starts to perform vacuum pumping and/or refrigerant filling work when reaching a predetermined opening degree, according to a specific embodiment of the present application, the power supply unit includes a first power supply module, a determination module, and a second power supply module, where the first power supply module is configured to supply power to the electronic expansion valve. The first power supply module is used for supplying power to the electromagnetic coil under the condition of receiving the preset signal so as to open the electronic expansion valve body; the determining module is used for determining whether the electronic expansion valve body is opened to the preset opening degree; the second power supply module is used for continuously supplying power to the electromagnetic coil under the condition that the electronic expansion valve body is not opened to the preset opening degree until the electronic expansion valve body is opened to the preset opening degree. Therefore, the opening quality of the electronic expansion valve is further ensured to be higher.
According to another specific embodiment of the application, the determining module comprises a first obtaining submodule and a first determining submodule, wherein the first obtaining submodule is used for obtaining the electrifying time length of the electromagnetic coil; the first determining submodule is used for determining that the electronic expansion valve body is opened to the preset opening degree under the condition that the electrifying time length is greater than or equal to a first preset time length. Whether the electrifying time of the electromagnetic coil reaches the first preset time or not can be monitored simply and accurately, and the opening degree of the electronic expansion valve is further ensured to be controllable.
Certainly, the manner of determining whether the electronic expansion valve body is opened to the predetermined opening degree is not limited to the above manner, and a person skilled in the art may flexibly select any suitable manner to determine the opening degree of the electronic expansion valve body, in yet another embodiment of the present application, the determining module includes a second obtaining submodule and a second determining submodule, where the second obtaining submodule is configured to obtain a real-time current value of the opened electronic expansion valve body; the second determining submodule is used for determining that the electronic expansion valve body is opened to the preset opening degree under the condition that the change rate of the real-time current value is larger than or equal to a preset threshold value. By obtaining the current value conversion rate of the electronic expansion valve body, the reverse acting force of the electronic expansion valve body can be determined, the actual opening degree of the electronic expansion valve is further determined, the automatic judgment of the opening degree of the electronic expansion valve is further realized, the vacuum pumping operation and/or the refrigerant filling operation are further ensured to be carried out under the condition that the electronic expansion valve body is opened to the required opening degree, and the problems that the opening degree stability and consistency are poor and the quality and the safety cannot be ensured due to the manual operation of the electronic expansion valve are further avoided.
In order to further ensure that the opening degree of the electronic expansion valve is controllable, according to another specific embodiment of the present application, the second power supply module includes a power supply module, a third determining sub-module, and a circulation sub-module, where the power supply module is configured to supply power to the electromagnetic coil when the electronic expansion valve body is not opened to the predetermined opening degree; the third determining submodule is used for determining whether the electronic expansion valve body is opened to the preset opening degree or not; the circulation submodule is used for circulating the step, and under the condition that the electronic expansion valve body is not opened to the preset opening degree, the power supply step and the determining step are sequentially executed until the electronic expansion valve body is opened to the preset opening degree. It should be noted that, in the case where the electronic expansion valve body is opened to the predetermined opening degree as a result of the determining step, the circulating step is not executed.
In an actual application process, after a predetermined current or a predetermined voltage is supplied to the electromagnetic coil for a period of time, the electronic expansion valve is still not opened to a required opening degree, and in this case, in order to further ensure high processing efficiency, in a specific embodiment, the apparatus further includes an increasing unit, where the increasing unit is configured to increase a power supply current and/or a power supply voltage supplied to the electromagnetic coil when the electronic expansion valve body is not opened to the predetermined opening degree after supplying power to the electromagnetic coil for a second predetermined time period, so that the increased electronic expansion valve body is opened to the predetermined opening degree. This makes it possible to make the electronic expansion valve reach the predetermined opening degree relatively quickly.
The above-mentioned device of this application has realized that the automation of electron expansion valve body is opened, automatic evacuation and automatic refrigerant that fills, compares prior art and has reduced personnel's operation. Because the opening force and the opening time of the electronic expansion valve are standardized through automation, the potential safety hazard of residual air of a condenser of the outdoor unit of the split air conditioner caused by small opening degree is avoided, and the problems of inaccurate weight of the poured refrigerant caused by small opening degree and the like are solved.
The control device of the electronic expansion valve body comprises a processor and a memory, wherein the power supply unit, the generating unit and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The core can be set to be one or more than one, and the opening degree of an electronic expansion valve is difficult to control in the process of vacuumizing or filling the refrigerant of the air conditioner outdoor unit in the prior art by adjusting the core parameters, so that the vacuum degree or the refrigerant filling amount is influenced.
The memory may include volatile memory in a computer readable medium, random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.
An embodiment of the present invention provides a computer-readable storage medium having stored thereon a program that, when executed by a processor, implements the above-described control method of an electronic expansion valve body.
The embodiment of the invention provides a processor, which is used for running a program, wherein the program executes the control method of the electronic expansion valve body when running.
The embodiment of the invention provides equipment, which comprises a processor, a memory and a program which is stored on the memory and can run on the processor, wherein when the processor executes the program, at least the following steps are realized:
step S101, under the condition that a preset signal is received, supplying power to an electromagnetic coil to enable an electronic expansion valve body to be opened to a preset opening degree, wherein the preset signal is sent by a signal transmitter positioned on a station for processing a preset process, the preset process comprises a vacuumizing process and/or a refrigerant filling process of an air conditioner, and the electromagnetic coil is sleeved on the electronic expansion valve body;
and step S102, generating a feedback signal and sending the feedback signal under the condition that the electronic expansion valve body is opened to the preset opening degree, wherein the feedback signal is a signal for triggering the execution of vacuumizing and/or refrigerant filling work.
The device herein may be a server, a PC, a PAD, a mobile phone, etc.
The present application further provides a computer program product adapted to perform a program initialized with at least the following method steps when executed on a data processing device:
step S101, under the condition that a preset signal is received, supplying power to an electromagnetic coil to enable an electronic expansion valve body to be opened to a preset opening degree, wherein the preset signal is sent by a signal transmitter positioned on a station for processing a preset process, the preset process comprises a vacuumizing process and/or a refrigerant pouring process of an air conditioner, and the electromagnetic coil is sleeved on the electronic expansion valve body;
and step S102, generating a feedback signal and sending the feedback signal under the condition that the electronic expansion valve body is opened to the preset opening degree, wherein the feedback signal is a signal for triggering the execution of vacuumizing and/or refrigerant filling work.
According to another exemplary embodiment of the present application, there is also provided a control apparatus of an electronic expansion valve body, as shown in fig. 9, the control apparatus includes a solenoid coil 100 and a control device 101 of the electronic expansion valve body, wherein the solenoid coil 100 is configured to be sleeved on the electronic expansion valve body to be controlled; the control device 101 includes one or more processors, memory, and one or more programs stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for performing any of the above-described methods.
The control device of the above-mentioned electronic expansion valve comprises a solenoid and a control means of the electronic expansion valve body for performing any of the above-mentioned methods. Compared with the prior art, the electronic expansion valve is difficult to control in the process of vacuumizing or refrigerant filling of the outdoor unit of the air conditioner, and the problem of vacuum degree or refrigerant filling amount is influenced, the control device controls the electronic expansion valve body to be opened to the opening degree required by the station by supplying power to the electromagnetic coil under the condition that the air conditioner to be processed is detected to enter a vacuumizing station and/or a refrigerant filling station, and then sends out a feedback signal for triggering the station to work, so that the electronic expansion valve can be automatically opened at a specified position without manual control, and the electronic expansion valve is ensured to automatically execute vacuumizing and/or refrigerant filling operation after being opened to the required opening degree, automatic operation is realized, the opening degree of the electronic expansion valve is controllable, the problems that the electronic expansion valve is inconsistent in opening degree due to insufficient stability of manual operation, the vacuum degree or the refrigerant filling amount is influenced, and further the quality and the production efficiency of the air conditioner are influenced are solved, the processing efficiency of the air conditioner is higher, and the quality of the obtained air conditioner is better.
In a specific embodiment, as shown in fig. 9, the control device further includes a power supply device 103, and the power supply device 103 is electrically connected to the electromagnetic coil 100 through the control device 101. The power supply equipment supplies power to the control device and the electromagnetic coil, an external power supply is not needed, autonomous power supply is achieved, and personnel operation is further reduced.
In practical applications, the power supply device includes a battery, such as a lithium battery. Therefore, the charging can be realized, and the recycling of the control equipment is realized. The control device can be a plate-shaped structure, namely a control plate.
According to another specific embodiment of the present application, as shown in fig. 9, the control device further includes a housing 104, the housing 104 has an accommodating space, the electromagnetic coil 100, the control device 101 and the power supply device 103 are all located in the housing 104, and the electromagnetic coil 100 is sleeved on the electronic expansion valve body through the housing 104. Above-mentioned control equipment detachably cover is established on waiting the electronic expansion valve of control, and before the process of opening the electronic expansion valve body of needs, establish above-mentioned control equipment cover on the electronic expansion valve body, need not open the process of electronic expansion valve body, can take off control equipment from the electronic expansion valve body, guaranteed control equipment's practicality and flexibility.
In another specific embodiment, as shown in fig. 9, the housing includes a housing upper cover 105, a housing lower cover 106, and a housing body 107, the control device further includes screws 108 and a coil interface protection cover 109, and the screws 108 are used to fix the housing upper cover 105, the housing lower cover 106, and the coil interface protection cover on the housing body 107, respectively.
The control equipment of the electronic expansion valve body can be compatible with the existing electromagnetic coil, the control device and the lithium battery, and the effect of automatically opening the electronic expansion valve body after receiving the preset signal is achieved. As shown in fig. 10, in normal production, the signal emitter is installed at the upper end of the required production station, so that the emitted predetermined signal is within the receivable range of the control device of the control equipment; before the process of opening the electronic expansion valve body, the control equipment is sleeved on the electronic expansion valve body, the control equipment supplies power to the electromagnetic coil to open the electronic expansion valve body and control the electronic expansion valve body to be opened to a preset opening degree under the condition that the air conditioner to be processed flows into a vacuumizing station where the electronic expansion valve body needs to be opened; the control equipment judges whether the opening state of the electronic expansion valve body is qualified or not according to the opening time and/or the current change rate of the electronic expansion valve body, and returns a feedback signal under the condition of being qualified; the signal emitter is linked with the vacuumizing equipment to perform vacuumizing work under the condition of receiving the feedback signal; then the air conditioner to be processed flows out of the vacuumizing station and enters the refrigerant filling station, and the action of the control equipment in refrigerant filling is the same as the vacuumizing process, so the details are not repeated; the air conditioner to be processed flows out of the refrigerant filling station, the control equipment on the electronic expansion valve body can be taken down at the moment, and the control equipment is charged or placed on other air conditioners to be processed for repeated use. The above-mentioned controlgear of this application has realized that the electronic expansion valve body is automatic to be opened, realizes the full automated production of evacuation and pouring coolant station, has avoided because quality problems or potential safety hazard scheduling problem that manual operation reliability is low to cause.
In addition, the electronic expansion valve body is only opened at the specified position, namely, the electromagnetic coil is only required to be powered at the specified position, and the control equipment is in a low-power consumption state in the rest time, so that the service life of the electronic expansion valve body is ensured to be longer.
In another exemplary embodiment of the present application, there is also provided an electronic expansion valve system, which includes an electronic expansion valve body and a control device of any one of the above electronic expansion valve bodies, wherein the control device is detachably sleeved on the electronic expansion valve body.
The electronic expansion valve system comprises an electronic expansion valve body and any one of the control devices, and compared with the problem that the opening degree of the electronic expansion valve is difficult to control in the process of vacuumizing or filling a refrigerant in the outdoor unit of the air conditioner in the prior art, and the vacuum degree or the refrigerant filling amount is influenced, the control device of the electronic expansion valve system controls the electronic expansion valve body to be opened to the opening degree required by a station by supplying power to an electromagnetic coil under the condition that the air conditioner to be processed is detected to enter the vacuumizing station and/or the refrigerant filling station, and then sends out a feedback signal for triggering the station to work, so that the electronic expansion valve can be automatically opened at a specified position without manual control, and the electronic expansion valve is ensured to automatically execute vacuumizing and/or refrigerant filling operation after the electronic expansion valve is opened to the required opening degree, automatic operation is realized, the opening degree of the electronic expansion valve is ensured to be controllable, the problem that the opening degree of the electronic expansion valve is inconsistent due to insufficient stability of manual operation, the vacuum degree or the refrigerant filling amount is influenced, and the quality and the production efficiency of the air conditioner are further influenced is solved.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described apparatus embodiments are merely illustrative, and for example, the division of the above-described units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit may be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as a separate product. Based on such understanding, the technical solution of the present invention, which is substantially or partly contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:
1) In the control method of the electronic expansion valve body, firstly, under the condition that a preset signal sent by a signal transmitter is received, the air conditioner to be processed comprising the electronic expansion valve body reaches a vacuumizing and/or refrigerant filling station needing to be opened by an electromagnetic valve body, and then an electromagnetic coil sleeved on the electronic expansion valve body is powered, so that the electronic expansion valve body is opened to a preset opening degree under the action of electromagnetic force; and then, under the condition that the electronic expansion valve body is opened to the preset opening degree, generating a feedback signal for triggering the vacuumizing and/or refrigerant filling operation and sending the feedback signal to enable the vacuumizing equipment and/or the refrigerant filling equipment to start to work so as to vacuumize and/or fill the air conditioner to be processed with the refrigerant. Compared with the prior art, the electronic expansion valve is difficult to control in the process of vacuumizing or refrigerant filling of the outdoor unit of the air conditioner, and the problem of vacuum degree or refrigerant filling amount is influenced.
2) The control device of the electronic expansion valve body provided by the application shows that the air conditioner to be processed comprising the electronic expansion valve body reaches a vacuumizing and/or refrigerant filling station needing to be opened by the electromagnetic valve body under the condition of receiving a preset signal sent by the signal transmitter, and at the moment, the electromagnetic coil sleeved on the electronic expansion valve body is powered by the power supply unit, so that the electronic expansion valve body is opened to a preset opening degree under the action of electromagnetic force; and generating a feedback signal triggering the vacuumizing and/or refrigerant filling operation and sending the feedback signal under the condition that the electronic expansion valve body is opened to the preset opening degree through the generating unit, so that the vacuumizing equipment and/or the refrigerant filling equipment start to work, and the air conditioner to be processed is vacuumized and/or filled with the refrigerant. Compared with the prior art, the electronic expansion valve is difficult to control in the process of vacuumizing or refrigerant filling of the outdoor unit of the air conditioner, and the problem of vacuum degree or refrigerant filling amount is influenced.
3) The control device of the electronic expansion valve described above comprises a solenoid and a control means of the electronic expansion valve body for performing any of the above-described methods. Compared with the prior art, the electronic expansion valve is difficult to control in the process of vacuumizing or refrigerant filling of the outdoor unit of the air conditioner, and the problem of vacuum degree or refrigerant filling amount is influenced, the control device controls the electronic expansion valve body to be opened to the opening degree required by the station by supplying power to the electromagnetic coil under the condition that the air conditioner to be processed is detected to enter a vacuumizing station and/or a refrigerant filling station, and then sends out a feedback signal for triggering the station to work, so that the electronic expansion valve can be automatically opened at a specified position without manual control, and the electronic expansion valve is ensured to automatically execute vacuumizing and/or refrigerant filling operation after being opened to the required opening degree, automatic operation is realized, the opening degree of the electronic expansion valve is controllable, the problems that the electronic expansion valve is inconsistent in opening degree due to insufficient stability of manual operation, the vacuum degree or the refrigerant filling amount is influenced, and further the quality and the production efficiency of the air conditioner are influenced are solved, the processing efficiency of the air conditioner is higher, and the quality of the obtained air conditioner is better.
4) The electronic expansion valve system comprises an electronic expansion valve body and any one of the control devices, and compared with the prior art, the electronic expansion valve body is difficult to control in the process of vacuumizing or filling refrigerant, and the problem of vacuum degree or refrigerant filling amount is influenced.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (13)
1. A method of controlling an electronic expansion valve body, comprising:
under the condition of receiving a preset signal, supplying power to an electromagnetic coil to open the electronic expansion valve body to a preset opening degree, wherein the preset signal is sent by a signal transmitter, and the electromagnetic coil is sleeved on the electronic expansion valve body;
and generating a feedback signal and sending the feedback signal under the condition that the electronic expansion valve body is opened to the preset opening degree, wherein the feedback signal is a signal for triggering the execution of vacuumizing and/or refrigerant filling work.
2. The method of claim 1, wherein energizing a solenoid to cause an electronic expansion valve body to open to a predetermined opening upon receipt of a predetermined signal comprises:
upon receipt of the predetermined signal, energizing the solenoid coil to cause the electronic expansion valve body to open;
determining whether the electronic expansion valve body is opened to the predetermined opening degree;
and under the condition that the electronic expansion valve body is not opened to the preset opening degree, continuing to supply power to the electromagnetic coil until the electronic expansion valve body is opened to the preset opening degree.
3. The method of claim 2, wherein determining whether the electronic expansion valve body is open to the predetermined opening comprises:
acquiring the electrifying time of the electromagnetic coil;
and under the condition that the electrifying time length is greater than or equal to a first preset time length, determining that the electronic expansion valve body is opened to the preset opening degree.
4. The method of claim 2, wherein determining whether the electronic expansion valve body is open to the predetermined opening comprises:
acquiring a real-time current value of the opened electronic expansion valve body;
and under the condition that the change rate of the real-time current value is greater than or equal to a preset threshold value, determining that the electronic expansion valve body is opened to the preset opening degree.
5. The method of claim 2, wherein continuing to energize the solenoid coil until the electronic expansion valve body opens to the predetermined opening without the electronic expansion valve body opening to the predetermined opening comprises:
a power supply step of continuing to supply power to the electromagnetic coil when the electronic expansion valve body is not opened to the predetermined opening degree;
a determination step of determining whether the electronic expansion valve body is opened to the predetermined opening degree;
and a circulating step of, when the electronic expansion valve body is not opened to the predetermined opening degree, sequentially executing the power supplying step and the determining step until the electronic expansion valve body is opened to the predetermined opening degree.
6. The method of any one of claims 1 to 5, wherein, in the event that the electronic expansion valve body has not opened to the predetermined opening after energizing the solenoid for a second predetermined length of time, the method further comprises:
and increasing the power supply current and/or the power supply voltage supplied to the electromagnetic coil so that the increased electronic expansion valve body is opened to the predetermined opening degree.
7. A control device for an electronic expansion valve body, comprising:
the power supply unit is used for supplying power to the electromagnetic coil under the condition of receiving a preset signal so as to open the electronic expansion valve body to a preset opening degree, the preset signal is sent by the signal transmitter, and the electromagnetic coil is sleeved on the electronic expansion valve body;
and the generating unit is used for generating and sending a feedback signal under the condition that the electronic expansion valve body is opened to the preset opening degree, wherein the feedback signal is a signal for triggering the execution of vacuumizing and/or refrigerant perfusion work.
8. A computer-readable storage medium, characterized in that the computer-readable storage medium comprises a stored program, wherein the program performs the method of any one of claims 1 to 6.
9. A processor, characterized in that the processor is configured to run a program, wherein the program when running performs the method of any of claims 1 to 6.
10. A control apparatus of an electronic expansion valve body, comprising:
the electromagnetic coil is sleeved on the electronic expansion valve body to be controlled;
control apparatus of an electronic expansion valve body comprising one or more processors, memory and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing the method of any of claims 1 to 6.
11. The control apparatus according to claim 10, characterized in that the control apparatus further comprises:
and the power supply equipment is electrically connected with the electromagnetic coil through the control device.
12. The control apparatus according to claim 11, characterized in that the control apparatus further comprises:
the electromagnetic coil, the control device and the power supply equipment are all located in the shell, and the electromagnetic coil is sleeved on the electronic expansion valve body through the shell.
13. An electronic expansion valve system, comprising:
an electronic expansion valve body;
the control device of the electronic expansion valve body of any of claims 10 to 12, which is detachably fitted over the electronic expansion valve body.
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