CN110749117A - Air conditioner, control method and device, air conditioning system, storage medium and processor - Google Patents
Air conditioner, control method and device, air conditioning system, storage medium and processor Download PDFInfo
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- CN110749117A CN110749117A CN201911122340.0A CN201911122340A CN110749117A CN 110749117 A CN110749117 A CN 110749117A CN 201911122340 A CN201911122340 A CN 201911122340A CN 110749117 A CN110749117 A CN 110749117A
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- way valve
- pressure
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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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/40—Pressure, e.g. wind pressure
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application provides an air conditioner, a control method and device, an air conditioning system, a storage medium and a processor, the air conditioner comprises an outdoor unit, the outdoor unit comprises a four-way valve, a control valve and a compressor, the four-way valve comprises a first end, a second end, a third end and a fourth end, the first end is connected with one end of the compressor, the third end is connected with the other end of the compressor, the control valve is positioned on a pipeline between the compressor and the first end, the control valve is used for controlling the on-off of the pipeline between the first end and the compressor, thus, in case of determining the switching abnormality of the four-way valve, the disconnection of the pipeline between the first end of the four-way valve and the compressor can be controlled by controlling the control valve, thereby increasing the pressure of the pipeline between the first end of the four-way valve and the compressor, further pushing the piston of the four-way valve to switch and switching the four-way valve, the method is simple, and the problem of abnormal reversing of the four-way valve can be solved by controlling the control valve.
Description
Technical Field
The application relates to the field of air conditioners, in particular to an air conditioner, a control method and device, an air conditioning system, a storage medium and a processor.
Background
Currently, for an air conditioning unit with a cooling and heating function, a four-way valve is generally used to switch between cooling and heating cycles. The four-way valve is driven by pressure difference, and the piston is pushed by the pressure difference at the two ends of the piston to realize reversing.
However, when heating in winter, the outdoor temperature is low, and the four-way valve is easy to reverse abnormally, so that the unit cannot work normally, and the running reliability of the unit and the use comfort of a user are seriously influenced.
In the existing solutions, a method for increasing the frequency of the compressor is generally adopted, the solution is complex and requires a certain time, and when the ambient temperature is lower than-30 ℃, the required time is longer and energy waste is caused.
The above information disclosed in this background section is only for enhancement of understanding of the background of the technology described herein and, therefore, certain information may be included in the background 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 purpose of the present application is to provide an air conditioner, a control method and device, an air conditioning system, a storage medium, and a processor, so as to solve the problem that the solution of the abnormal reversing of the four-way valve in the prior art is relatively complex.
In order to achieve the above object, according to one aspect of the present application, there is provided an air conditioner including an outdoor unit including a four-way valve, a control valve and a compressor, the four-way valve including a first end, a second end, a third end and a fourth end, the first end being connected to one end of the compressor, the third end being connected to the other end of the compressor, the control valve being located on a pipeline between the compressor and the first end, the control valve being configured to control on/off of the pipeline between the first end and the compressor.
Further, the outdoor unit further includes a first pressure detecting device disposed on a pipe between the compressor and the control valve, and a second pressure detecting device disposed on a pipe between the third terminal and the other end of the compressor.
Further, the outdoor unit further comprises a first heat exchanger, the fourth end of the outdoor unit is communicated with the first heat exchanger, the air conditioner further comprises an indoor unit, the indoor unit comprises a second heat exchanger, one end of the second heat exchanger is communicated with the second end, and the other end of the second heat exchanger is communicated with the first heat exchanger.
Further, the air conditioner further comprises a first temperature detection device and a second temperature detection device, wherein the first temperature detection device is arranged on the first heat exchanger, the first temperature detection device is used for detecting the temperature of the environment where the outdoor unit is located, and the second temperature detection device is arranged on a pipeline between the third end and the compressor.
Further, the control valve is an electromagnetic valve.
According to another aspect of the present application, there is provided a control method of an air conditioner, the control method including: detecting whether the four-way valve has abnormal reversing; and under the condition that whether the four-way valve has abnormal reversing or not is determined and the times of the abnormal reversing are less than the preset times, adjusting the state of a control valve to ensure that the four-way valve is normally reversed.
Further, whether the detection cross valve appears the switching-over unusually, include: under the condition that a four-way valve is electrified for a first preset time, acquiring the ratio between the current first pressure and the current second pressure, wherein the first pressure is the pressure on a pipeline between a first end of the four-way valve and a compressor, and the second pressure is the pressure on a pipeline between a third end of the four-way valve and the compressor; and determining whether the four-way valve has abnormal reversing according to the ratio.
Further, according to the ratio, determining whether the four-way valve has abnormal reversing comprises: acquiring the gas temperature in a pipeline between the third end and the compressor under the condition that the ratio of the first pressure to the second pressure is smaller than a first preset value; and determining that the four-way valve has abnormal reversing when the gas temperature is higher than a second preset value.
Further, according to the ratio, determining whether the four-way valve has abnormal reversing comprises: and determining that the four-way valve is normally reversed when the ratio is greater than or equal to a first preset value.
Further, the control method further includes: a process of determining the first predetermined value, the process of determining the predetermined value comprising: acquiring the temperature of the environment where an outdoor unit of an air conditioner is located; the predetermined value is determined in accordance with the temperature of the environment.
Further, in a case where it is determined whether the four-way valve is abnormal in commutation and the number of times of the abnormal commutation is less than a predetermined number of times, adjusting the state of a control valve so that the commutation of the four-way valve is normal, includes: adjusting the control valve to be in a first state, wherein the first state is a disconnection state; acquiring the current first pressure after the control valve is in the first state for second preset time; under the condition that the current first pressure is larger than a third preset value, adjusting the control valve to be in a second state, wherein the second state is a closed state; obtaining a current ratio between the first pressure and the second pressure after the control valve is in the second state for a third predetermined time; and determining whether the four-way valve has abnormal reversing according to the ratio.
Further, the second preset time is between 2s and 8s, the third preset time is between 5s and 15s, and the third preset value is between 1.5 and 2 MPa.
Further, the control valve is a normally open type solenoid valve, and adjusting the control valve to be in a first state includes: energizing the solenoid valve to adjust the control valve to a first state, comprising: and powering off the electromagnetic valve.
Further, in a case where it is determined that the four-way valve is abnormally commutated, the control method further includes: and under the condition that the four-way valve is determined to be abnormal in reversing and the times of the abnormal reversing are greater than or equal to the preset times, controlling the air conditioner to stop and sending an alarm signal.
Further, the first preset value is between 1.2 and 2.0, and the second preset value is between 0 and 10 ℃.
According to still another aspect of the present application, there is provided a control device of an air conditioner, the control device including: the detection unit is used for acquiring the ratio of current first pressure and current second pressure under the condition that the four-way valve is electrified for first preset time, wherein the first pressure is the pressure on a pipeline between the first end of the four-way valve and the compressor, and the second pressure is the pressure between the third end of the four-way valve and the compressor; and the determining unit is used for determining whether the four-way valve has abnormal reversing according to the ratio.
According to still another aspect of the present application, there is provided an air conditioning system including an air conditioner which is any one of the air conditioners, and a control device for performing any one of the control methods.
According to another aspect of the present application, there is provided a storage medium including a stored program, wherein the program executes any one of the control methods.
According to yet another aspect of the present application, there is provided a processor for executing a program, wherein the program executes any one of the control methods.
By the technical scheme, the outdoor unit of the air conditioner comprises the four-way valve, the control valve and the compressor. The control valve is positioned on a pipeline between the compressor and the first end and is used for controlling the connection and disconnection of the pipeline between the first end and the compressor, so that the pipeline between the first end of the four-way valve and the compressor can be controlled to be disconnected by controlling the control valve under the condition that the four-way valve is determined to be switched abnormally, the pressure of the pipeline between the first end of the four-way valve and the compressor is increased, the piston of the four-way valve is pushed to be switched, the four-way valve is switched, the method is simple, and the problem of abnormal reversing of the four-way valve can be solved by controlling the control valve.
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 illustrates a schematic structural view of an air conditioner according to an embodiment of the present application;
fig. 2 illustrates a flowchart of a control method of an air conditioner according to an embodiment of the present application; and
fig. 3 shows a schematic diagram of a control apparatus of an air conditioner according to an embodiment of the present application.
Wherein the figures include the following reference numerals:
01. an outdoor unit; 02. an indoor unit; 10. a four-way valve; 11. a first end; 12. a second end; 13. a third end; 14. a fourth end; 20. a control valve; 30. a compressor; 40. a first pressure detection device; 50. a second pressure detection device; 60. a first heat exchanger; 70. a second heat exchanger; 80. a first temperature detection device; 90. a second temperature detection device; 110. an electronic expansion valve.
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 embodiments with reference to the attached drawings.
In order to make the technical solutions 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 partial embodiments of the present application, but 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 described in the background art, in the prior art, a solution to the switching abnormality of the four-way valve is complicated, and in order to solve the problem, according to an embodiment of the present application, an air conditioner, a control method and device thereof, an air conditioning system, a storage medium, and a processor are provided.
In an exemplary embodiment of the present application, as shown in fig. 1, an air conditioner is provided, which includes an outdoor unit 01 including a four-way valve 10, a control valve 20 and a compressor 30, the four-way valve including a first end 11, a second end 12, a third end 13 and a fourth end 14, the first end 11 being connected to one end of the compressor 30, the third end 13 being connected to the other end of the compressor 30, the control valve 20 being located on a pipeline between the compressor 30 and the first end 11, the control valve 20 being configured to control on/off of the pipeline between the first end 11 and the compressor 30.
In the air conditioner, the outdoor unit of the air conditioner comprises a four-way valve, a control valve and a compressor. The control valve is positioned on a pipeline between the compressor and the first end and is used for controlling the on-off of the pipeline between the first end and the compressor, so that the pipeline between the first end of the four-way valve and the compressor can be controlled to be switched off by controlling the control valve under the condition that the switching of the four-way valve is determined to be abnormal, the pressure of the pipeline between the first end of the four-way valve and the compressor is improved, the piston of the four-way valve is pushed to be switched, the four-way valve is switched, the method is simple, and the problem of abnormal reversing of the four-way valve can be solved by controlling the control valve.
In an embodiment of the present application, as shown in fig. 1, the outdoor unit 01 further includes a first pressure detecting device 40 and a second pressure detecting device 50, the first pressure detecting device 40 is disposed on a pipeline between the compressor 30 and the control valve 20, and the second pressure detecting device 50 is disposed on a pipeline between the third end 13 and the other end of the compressor 30, so that pressures of pipelines at two ends of the compressor can be detected in real time, accuracy of pressure detection is improved, and whether a reversing abnormality occurs in the four-way valve can be determined by the two pressures.
In one embodiment of the present application, the outdoor unit 01 further includes a first heat exchanger 60, the fourth end 14 communicates with the first heat exchanger 60, the air conditioner further includes an indoor unit 02, the indoor unit includes a second heat exchanger 70, one end of the second heat exchanger 70 communicates with the second end 12, and the other end of the second heat exchanger 70 communicates with the first heat exchanger 60.
Specifically, as shown in fig. 1, when the air conditioner is in a cooling mode, the second end 12 and the third end 13 of the four-way valve 10 are connected, the first end 11 and the fourth end 14 of the four-way valve 10 are connected, the liquid refrigerant is changed into a gaseous state after heat exchange in the second heat exchanger 70, the gaseous refrigerant is driven by the compressor 30 to be sent to the first heat exchanger 60, the gaseous refrigerant is changed into a liquid state again after heat exchange in the first heat exchanger 60, and the liquid refrigerant is introduced into the second heat exchanger 70 again, so that a cooling cycle is realized; when the air conditioner is in a heating mode, the first end 11 and the second end 12 of the four-way valve 10 are communicated, the fourth end 14 and the third end 13 of the four-way valve 10 are communicated, the liquid refrigerant is changed into a gaseous state after heat exchange of the first heat exchanger 60, the gaseous refrigerant is driven by the compressor 30 to be sent to the second heat exchanger 70, the gaseous refrigerant is changed into a liquid state again after heat exchange of the second heat exchanger 70, and the liquid refrigerant is introduced into the first heat exchanger 60 again, so that a heating cycle is realized.
In order to further improve the accuracy of detecting the switching abnormality of the four-way valve, in an embodiment of the present application, the air conditioner further includes a first temperature detecting device 80 and a second temperature detecting device 90, wherein the first temperature detecting device 80 is disposed on the first heat exchanger 60, and the first temperature detecting device 80 is configured to detect the temperature of the environment where the outdoor unit 01 is located, so that whether the four-way valve has the abnormal reversing operation can be determined more accurately according to the temperature of the environment and the two pressures.
In an embodiment of the present invention, the air conditioner further includes an electronic expansion valve 110, and the electronic expansion valve 110 is disposed on a pipeline between the first heat exchanger 60 and the second heat exchanger 70, and is used for controlling a flow rate of a liquid refrigerant, so as to adjust a cooling or heating effect of the air conditioner.
In a specific embodiment of the present application, the control valve is a solenoid valve. Of course, the control valve is not limited to the solenoid valve, and those skilled in the art can select a suitable control valve, for example, a manual valve, according to the actual situation.
The embodiment of the present application further provides a control method of an air conditioner, and it should be noted that the control method of the air conditioner according to the embodiment of the present application may be used to control the air conditioner provided by the embodiment of the present application. The following describes a control method of an air conditioner provided in an embodiment of the present application.
Fig. 2 is a flowchart of a control method of an air conditioner according to an embodiment of the present application, the control method including:
step S101, detecting whether the four-way valve has abnormal reversing;
and step S102, under the condition that whether the four-way valve has abnormal reversing or not is determined and the times of the abnormal reversing are less than the preset times, adjusting the state of a control valve to ensure that the four-way valve is normally reversed.
In the control method, firstly, whether the four-way valve has abnormal reversing is detected; then, under the condition that the four-way valve is determined to be abnormally switched, the control valve can be controlled to control the disconnection of a pipeline between the first end of the four-way valve and the compressor, so that the pressure of the pipeline between the first end of the four-way valve and the compressor is improved, the piston of the four-way valve is pushed to be switched, the four-way valve is switched, the method is simple, and the problem of abnormal reversing of the four-way valve can be solved by controlling the control valve.
In order to determine whether the four-way valve appears the switching-over unusually more accurately and efficiently, in an embodiment of this application, detect whether the switching-over unusually appears in the four-way valve, include: acquiring a ratio between a current first pressure and a current second pressure under the condition that the four-way valve is electrified for a first preset time, wherein the first pressure is the pressure on a pipeline between a first end of the four-way valve and a compressor, and the second pressure is the pressure on a pipeline between a third end of the four-way valve and the compressor; and determining whether the four-way valve has abnormal reversing according to the ratio.
In the control method of the air conditioner, firstly, under the condition that the four-way valve is electrified for a first preset time, the ratio between the current first pressure and the current second pressure is obtained, wherein the first pressure is the pressure on a pipeline between the first end of the four-way valve and the compressor, and the second pressure is the pressure between the third end of the four-way valve and the compressor, namely under the condition that the four-way valve is switched, the pressure ratio of pipelines at two ends of the compressor is obtained, then, whether the four-way valve is in abnormal reversing is determined according to the ratio, and under the condition that the ratio is abnormal, the condition that the two ends of the compressor are blocked or the pipelines are in cross conduction is indicated, namely, the four-way valve. According to the control method of the air conditioner, the pressure of the pipelines at the two ends of the compressor is obtained, and whether the four-way valve is abnormal in reversing is directly determined according to the pressure ratio, so that the detection efficiency of the abnormal switching of the four-way valve is improved, and the detection time and energy are saved.
In order to further improve the accuracy of detecting the switching abnormality of the four-way valve, in an embodiment of the present application, in a case that a ratio of the first pressure to the second pressure is smaller than a first predetermined value, a gas temperature in a pipeline between the third end and the compressor is obtained; and determining that the four-way valve has abnormal reversing when the gas temperature is higher than a second preset value. In the control method, under the condition that the ratio of the first pressure to the second pressure is abnormal, whether the gas temperature in the pipeline between the third end and the compressor is abnormal or not is further determined, namely under the condition that the ratio of the first pressure to the second pressure is smaller than a first preset value and the gas temperature in the pipeline between the third end and the compressor is larger than a second preset value, the four-way valve is determined to have abnormal reversing, and the accuracy of the detection of the abnormal switching of the four-way valve is further improved.
It should be noted that, under the condition that the four-way valve is abnormal in reversing, a pipeline between the first end of the four-way valve and the compressor and a pipeline between the third end of the four-way valve and the compressor are conducted, and due to the fact that the temperature of the compressed gas rises, gas exhausted by the compressor can be introduced into the pipeline between the third end of the four-way valve and the compressor, the temperature of the gas in the pipeline between the third end and the compressor is abnormal, specifically, the second preset value is between 0 and 10 ℃, the temperature of the gas is accurately detected to be abnormal, and the accuracy of detecting the abnormal switching of the four-way valve is further improved.
In an actual operation process, the compressor pressurizes and discharges the introduced gas, so that the first pressure is greater than the second pressure, and in one embodiment of the present application, determining whether the four-way valve has a reversing abnormality according to a ratio of the first pressure to the second pressure includes: and determining that the four-way valve is normally reversed when the ratio of the first pressure to the second pressure is greater than or equal to a first preset value. It should be noted that, when the four-way valve is in abnormal reversing, the pipeline between the first end of the four-way valve and the compressor and the pipeline between the third end of the four-way valve and the compressor are conducted, and as the pressure of the compressed gas is increased, the gas exhausted by the compressor is introduced into the pipeline between the third end of the four-way valve and the compressor, so that the second pressure is increased, and further the ratio of the first pressure to the second pressure is smaller than the first preset value.
In an embodiment of the present application, the control method further includes: the process of determining the first predetermined value may include: acquiring the temperature of the environment where an outdoor unit of an air conditioner is located; the predetermined value is determined based on the temperature of the environment. Specifically, the first predetermined value is between 1.2 and 2.0, more specifically, the first predetermined value ranges from 1.8 to 2.0 when the temperature of the environment is between-40 ℃ and-25 ℃, the first predetermined value ranges from 1.6 to 1.8 when the temperature of the environment is between-25 ℃ and-16 ℃, the first predetermined value ranges from 1.4 to 1.6 when the temperature of the environment is between-15 ℃ and-0 ℃, and the first predetermined value ranges from 1.2 to 1.4 when the temperature of the environment is between 0 ℃ and-24 ℃, and those skilled in the art can select an appropriate first predetermined value according to the actual temperature of the environment.
In an embodiment of the present application, in a case where it is determined that the four-way valve is abnormal in commutation, the control method further includes: adjusting the control valve to be in a first state, so that the pipeline between the first ends of the compressor is not communicated, namely the gas discharged by the compressor cannot pass through the pipeline between the first ends of the compressor; obtaining a current first pressure after the control valve is in the first state for a second predetermined time; when the current first pressure is larger than a third preset value, adjusting the control valve to be in a second state, namely closing the control valve, wherein the second state is a closed state; obtaining a current ratio between said first pressure and said second pressure after said control valve is in said second state for a third predetermined time; and determining whether the four-way valve has abnormal reversing according to the ratio. The process of determining whether the four-way valve has abnormal reversing according to the ratio can refer to the above contents.
Specifically, in the case where the number of times of the four-way valve abnormal commutation is smaller than the predetermined number of times, it is possible to make the four-way valve normal commutation by adjusting, the control valve is in the first state, i.e., the control valve is opened, so that the gas discharged from the compressor cannot pass through the pipeline between the first ends, then the gas in the pipeline between the first ends set by the compressor forms high-pressure gas after a second predetermined time, i.e., the first pressure is larger than a third predetermined value, then the control valve is adjusted in the second state, i.e., the control valve is closed, so that the high-pressure gas pushes the piston of the four-way valve to switch, finally, after the third predetermined time, whether the four-way valve abnormal commutation occurs is confirmed again by the ratio between the first pressure and the second pressure, in the case where the four-way valve abnormal commutation is normal, and repeating the steps.
In a specific embodiment of the present application, the second predetermined time is between 2s and 8s, the third predetermined time is between 5s and 15s, and the third predetermined value is between 1.5 and 2 MPa. The skilled person can select the appropriate second predetermined time, third predetermined time and third predetermined value according to actual conditions.
It should be noted that, the second predetermined time is set in the above range to ensure that the first pressure is greater than the third predetermined value after the control valve is closed, and sufficient thrust is passed through to the piston of the four-way valve, thereby improving the probability of normal reversing of the four-way valve.
In a specific embodiment of the present application, the adjusting the control valve to be in the first state includes: energizing the solenoid valve to disconnect the control valve and adjust the control valve to a second state, comprising: and powering off the electromagnetic valve to close the control valve.
In addition, when the control valve is a manual valve, adjusting the control valve to be in a first state includes: the manual disconnection valve, adjust above-mentioned control valve and be in the second state, include: the valve is closed manually.
In an embodiment of the present application, in a case where it is determined that the four-way valve is abnormal in commutation, the control method further includes: and under the condition that the reversing abnormality of the four-way valve is determined and the times of the reversing abnormality are greater than or equal to the preset times, the condition that the four-way valve possibly breaks down is indicated, for example, the four-way valve is blocked or a coil of the four-way valve is abnormal, the air conditioner is controlled to stop and an alarm signal is sent out, and a worker is reminded to timely maintain the fault.
It should be noted that, when the number of times of the above-mentioned four-way valve abnormal reversing is less than the predetermined number of times, the four-way valve can be adjusted through the control valve to make the four-way valve normal reversing, and when the number of times of the above-mentioned four-way valve abnormal reversing is greater than or equal to the predetermined number of times, it indicates that the four-way valve abnormal reversing can not be recovered to normal through adjustment, and the shutdown is required to repair the fault.
The embodiment of the present application further provides a control device of an air conditioner, and it should be noted that the control device of an air conditioner according to the embodiment of the present application may be used to execute the control method of an air conditioner according to the embodiment of the present application. The following describes a control device for an air conditioner according to an embodiment of the present application.
Fig. 3 is a schematic diagram of a control device of an air conditioner according to an embodiment of the present application, the control device including:
the detection unit 100 is used for detecting whether the four-way valve has abnormal reversing;
and a control unit 200 for adjusting the state of the control valve to make the four-way valve normally commutate when determining whether the four-way valve has abnormal commutation and the number of times of the abnormal commutation is less than a predetermined number of times.
In the control device, the detection unit detects whether the four-way valve has abnormal reversing; the control unit can control the pipeline between the first end of the four-way valve and the compressor to be disconnected by controlling the control valve under the condition that the four-way valve is determined to be abnormally switched, so that the pressure of the pipeline between the first end of the four-way valve and the compressor is improved, the piston of the four-way valve is pushed to be switched, the four-way valve is switched, the method is simple, and the problem of abnormal reversing of the four-way valve can be solved by controlling the control valve.
In order to more accurately and efficiently determine whether the four-way valve has a commutation abnormality, in one embodiment of the present application, the detecting unit includes a first detecting module and a first determining module, wherein the first detecting module is configured to obtain a ratio between a current first pressure and a current second pressure when the four-way valve is energized for a first predetermined time, the first pressure is a pressure on a pipeline between a first end of the four-way valve and a compressor, and the second pressure is a pressure on a pipeline between a third end of the four-way valve and the compressor; the first determining module is used for determining whether the four-way valve has abnormal reversing according to the ratio.
In the control device of the air conditioner, the detection unit acquires a ratio between a current first pressure and a current second pressure under the condition that the four-way valve is electrified for a first preset time, wherein the first pressure is the pressure on a pipeline between a first end of the four-way valve and the compressor, and the second pressure is the pressure between a third end of the four-way valve and the compressor, namely, under the condition that the four-way valve is switched completely, the pressure ratio of pipelines at two ends of the compressor is acquired, and the determining unit determines whether the four-way valve is in abnormal reversing according to the ratio, and under the condition that the ratio is abnormal, the detection unit indicates that pipeline blockage or pipeline cross conduction occurs at two ends of the compressor, namely, the four-way valve is. According to the control device of the air conditioner, the pressure of the pipelines at the two ends of the compressor is obtained, and whether the four-way valve is abnormal in reversing is directly determined according to the pressure ratio, so that the detection efficiency of the abnormal switching of the four-way valve is improved, and the detection time and energy are saved.
In order to further improve the accuracy of detecting the switching abnormality of the four-way valve, in an embodiment of the present application, the detecting unit further includes a second detecting module and a second determining module, wherein the second detecting module is configured to obtain a gas temperature in a pipeline between the third end and the compressor when a ratio of the first pressure to the second pressure is smaller than a first predetermined value; the second determining module is used for determining that the four-way valve has reversing abnormality when the gas temperature is greater than a second preset value. In the control method, under the condition that the ratio of the first pressure to the second pressure is abnormal, whether the gas temperature in the pipeline between the third end and the compressor is abnormal or not is further determined, namely under the condition that the ratio of the first pressure to the second pressure is smaller than a first preset value and the gas temperature in the pipeline between the third end and the compressor is larger than a second preset value, the four-way valve is determined to have abnormal reversing, and the accuracy of the detection of the abnormal switching of the four-way valve is further improved.
It should be noted that, when the four-way valve is in abnormal reversing, a pipeline between the first end of the four-way valve and the compressor and a pipeline between the third end of the four-way valve and the compressor are conducted, and gas exhausted by the compressor is led into the pipeline between the third end of the four-way valve and the compressor, so that the temperature of gas in the pipeline between the third end and the compressor is abnormal, specifically, the second preset value is between 0 and 10 ℃, so that the temperature of the gas is accurately detected to be abnormal, and the accuracy of detecting the abnormal switching of the four-way valve is further improved.
In an embodiment of the present application, the second determining module is further configured to determine that the four-way valve is normally switched when a ratio of the first pressure to the second pressure is greater than or equal to a first predetermined value. It should be noted that, when the four-way valve is in abnormal reversing, the pipeline between the first end of the four-way valve and the compressor and the pipeline between the third end of the four-way valve and the compressor are conducted, and the gas discharged from the compressor can be led into the pipeline between the third end of the four-way valve and the compressor, so that the ratio of the first pressure to the second pressure is smaller than the first preset value.
In an embodiment of the application, the control device further includes a determining unit, where the determining unit is configured to determine the first predetermined value, and the determining unit includes a third detecting module and a third determining module, where the third detecting module is configured to obtain a temperature of an environment where an outdoor unit of an air conditioner is located; the third determining module is configured to determine the predetermined value according to the temperature of the environment. Specifically, the first predetermined value is between 1.2 and 2.0, more specifically, the first predetermined value ranges from 1.8 to 2.0 when the temperature of the environment is between-40 ℃ and-25 ℃, the first predetermined value ranges from 1.6 to 1.8 when the temperature of the environment is between-25 ℃ and-16 ℃, the first predetermined value ranges from 1.4 to 1.6 when the temperature of the environment is between-15 ℃ and-0 ℃, and the first predetermined value ranges from 1.2 to 1.4 when the temperature of the environment is between 0 ℃ and-24 ℃, and those skilled in the art can select an appropriate first predetermined value according to the actual temperature of the environment.
In an embodiment of the present application, in a case that it is determined that the four-way valve is abnormal in reversing, the control unit includes a first control module and a second control module, where the first control module is configured to adjust the control valve to be in a first state when the number of times of the four-way valve is abnormal in reversing is less than a predetermined number of times, so that a pipeline between the first ends of the compressor is not communicated, that is, gas discharged from the compressor cannot pass through the pipeline between the first ends of the compressor; the detection unit is further configured to obtain a current first pressure after the control valve is in the first state for a second predetermined time; the second control module is configured to adjust the control valve to be in a second state, namely, to close the control valve, when the current first pressure is greater than a third predetermined value, where the first state is an open state and the second state is a closed state; the determining unit is further configured to obtain a current ratio between the first pressure and the second pressure after the control valve is in the second state for a third predetermined time; and determining whether the four-way valve has abnormal reversing according to the ratio.
Specifically, in the case where the number of times of the four-way valve abnormal commutation is smaller than the predetermined number of times, it is possible to make the four-way valve normal commutation by adjusting, the control valve is in the first state, i.e., the control valve is opened, so that the gas discharged from the compressor cannot pass through the pipeline between the first ends, then the gas in the pipeline between the first ends set by the compressor forms high-pressure gas after a second predetermined time, i.e., the first pressure is larger than a third predetermined value, then the control valve is adjusted in the second state, i.e., the control valve is closed, so that the high-pressure gas pushes the piston of the four-way valve to switch, finally, after the third predetermined time, whether the four-way valve abnormal commutation occurs is confirmed again by the ratio between the first pressure and the second pressure, in the case where the four-way valve abnormal commutation is normal, and repeating the steps.
In a specific embodiment of the present application, the second predetermined time is between 2s and 8s, the third predetermined time is between 5s and 15s, and the third predetermined value is between 1.5 and 2 MPa. The skilled person can select the appropriate second predetermined time, third predetermined time and third predetermined value according to actual conditions.
It should be noted that, the second predetermined time is set in the above range to ensure that the first pressure is greater than the third predetermined value after the control valve is closed, and sufficient thrust is passed through to the piston of the four-way valve, thereby improving the probability of normal reversing of the four-way valve.
In a specific embodiment of the present application, the control valve is a normally open solenoid valve, the first control module is configured to energize the solenoid valve to open the control valve, and the second control module is configured to de-energize the solenoid valve to close the control valve.
In addition, when the control valve is a manual valve, adjusting the control valve to be in a first state includes: the manual disconnection valve, adjust above-mentioned control valve and be in the second state, include: the valve is closed manually.
In an embodiment of the present application, in a case that it is determined that the four-way valve is abnormal in commutation, the control unit further includes a third control module, where the third control module is configured to indicate that the four-way valve may malfunction, for example, the four-way valve is stuck or a coil of the four-way valve is abnormal, when it is determined that the four-way valve is abnormal in commutation and the number of times of the abnormal commutation of the four-way valve is greater than or equal to a predetermined number of times, control the air conditioner to stop and send an alarm signal to remind a worker to timely maintain the malfunction.
It should be noted that, when the number of times of the above-mentioned four-way valve abnormal reversing is less than the predetermined number of times, the four-way valve can be adjusted through the control valve to make the four-way valve normal reversing, and when the number of times of the above-mentioned four-way valve abnormal reversing is greater than or equal to the predetermined number of times, it indicates that the four-way valve abnormal reversing can not be recovered to normal through adjustment, and the shutdown is required to repair the fault.
The embodiment of the application also provides an air conditioning system, which comprises an air conditioner and a control device, wherein the air conditioner is any one of the air conditioners, and the control device is used for executing any one of the control methods.
In the air conditioning system, the detection unit detects whether the four-way valve has abnormal reversing; the control unit can control the pipeline between the first end of the four-way valve and the compressor to be disconnected by controlling the control valve under the condition that the four-way valve is determined to be abnormally switched, so that the pressure of the pipeline between the first end of the four-way valve and the compressor is improved, the piston of the four-way valve is pushed to be switched, the four-way valve is switched, the method is simple, and the problem of abnormal reversing of the four-way valve can be solved by controlling the control valve.
The control device of the air conditioner comprises a processor and a memory, the acquisition unit, the determination 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. One or more than one kernel can be set, and the problem of abnormal switching of the four-way valve can be solved simply and quickly by adjusting kernel parameters.
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 storage medium having a program stored thereon, the program implementing the control method of the air conditioner described above when executed by a processor.
The embodiment of the invention provides a processor, which is used for running a program, wherein the program executes the control method of the air conditioner 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, detecting whether the four-way valve has abnormal reversing;
and step S102, under the condition that whether the four-way valve has abnormal reversing or not is determined and the times of the abnormal reversing are less than the preset times, adjusting the state of a control valve to ensure that the four-way valve is normally reversed.
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 of initializing at least the following method steps when executed on a data processing device:
step S101, detecting whether the four-way valve has abnormal reversing;
and step S102, under the condition that whether the four-way valve has abnormal reversing or not is determined and the times of the abnormal reversing are less than the preset times, adjusting the state of a control valve to ensure that the four-way valve is normally reversed.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
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 air conditioner of this application, the off-premises station of air conditioner includes cross valve, control valve and compressor. The control valve is positioned on a pipeline between the compressor and the first end and is used for controlling the on-off of the pipeline between the first end and the compressor, so that the pipeline between the first end of the four-way valve and the compressor can be controlled to be switched off by controlling the control valve under the condition that the switching of the four-way valve is determined to be abnormal, the pressure of the pipeline between the first end of the four-way valve and the compressor is improved, the piston of the four-way valve is pushed to be switched, the four-way valve is switched, the method is simple, and the problem of abnormal reversing of the four-way valve can be solved by controlling the control valve.
2) In the control method, firstly, whether the four-way valve has abnormal reversing is detected; then, under the condition that the four-way valve is determined to be abnormally switched, the control valve can be controlled to control the disconnection of a pipeline between the first end of the four-way valve and the compressor, so that the pressure of the pipeline between the first end of the four-way valve and the compressor is improved, the piston of the four-way valve is pushed to be switched, the four-way valve is switched, the method is simple, and the problem of abnormal reversing of the four-way valve can be solved by controlling the control valve.
3) In the control device, a detection unit detects whether the four-way valve has abnormal reversing; the control unit can control the pipeline between the first end of the four-way valve and the compressor to be disconnected by controlling the control valve under the condition that the four-way valve is determined to be abnormally switched, so that the pressure of the pipeline between the first end of the four-way valve and the compressor is improved, the piston of the four-way valve is pushed to be switched, the four-way valve is switched, the method is simple, and the problem of abnormal reversing of the four-way valve can be solved by controlling the control valve.
4) In the air conditioning system, the detection unit detects whether the four-way valve has abnormal reversing; the control unit can control the pipeline between the first end of the four-way valve and the compressor to be disconnected by controlling the control valve under the condition that the four-way valve is determined to be abnormally switched, so that the pressure of the pipeline between the first end of the four-way valve and the compressor is improved, the piston of the four-way valve is pushed to be switched, the four-way valve is switched, the method is simple, and the problem of abnormal reversing of the four-way valve can be solved by controlling the control valve.
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 by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (19)
1. The air conditioner is characterized by comprising an outdoor unit, wherein the outdoor unit comprises a four-way valve, a control valve and a compressor, the four-way valve comprises a first end, a second end, a third end and a fourth end, the first end is connected with one end of the compressor, the third end is connected with the other end of the compressor, the control valve is positioned on a pipeline between the compressor and the first end, and the control valve is used for controlling the connection and disconnection of the pipeline between the first end and the compressor.
2. The air conditioner of claim 1, wherein the outdoor unit further comprises a first pressure detecting device provided on a pipe between the compressor and the control valve, and a second pressure detecting device provided on a pipe between the third terminal and the other end of the compressor.
3. The air conditioner of claim 1, wherein the outdoor unit further comprises a first heat exchanger, the fourth end is in communication with the first heat exchanger, the air conditioner further comprises an indoor unit comprising a second heat exchanger, one end of the second heat exchanger is in communication with the second end, and the other end of the second heat exchanger is in communication with the first heat exchanger.
4. The air conditioner of claim 3, further comprising a first temperature detecting device and a second temperature detecting device, wherein the first temperature detecting device is disposed on the first heat exchanger, the first temperature detecting device is configured to detect a temperature of an environment in which the outdoor unit is located, and the second temperature detecting device is disposed on a pipeline between the third terminal and the compressor.
5. The air conditioner according to any one of claims 1 to 4, wherein the control valve is a solenoid valve.
6. A control method of an air conditioner according to any one of claims 1 to 5, characterized by comprising:
detecting whether the four-way valve has abnormal reversing;
and under the condition that whether the four-way valve has abnormal reversing or not is determined and the times of the abnormal reversing are less than the preset times, adjusting the state of a control valve to ensure that the four-way valve is normally reversed.
7. The control method according to claim 6, wherein detecting whether the four-way valve has a commutation abnormality comprises:
under the condition that a four-way valve is electrified for a first preset time, acquiring the ratio between the current first pressure and the current second pressure, wherein the first pressure is the pressure on a pipeline between a first end of the four-way valve and a compressor, and the second pressure is the pressure on a pipeline between a third end of the four-way valve and the compressor;
and determining whether the four-way valve has abnormal reversing according to the ratio.
8. The control method of claim 7, wherein determining whether a commutation anomaly occurs in the four-way valve based on the ratio comprises:
acquiring the gas temperature in a pipeline between the third end and the compressor under the condition that the ratio of the first pressure to the second pressure is smaller than a first preset value;
and determining that the four-way valve has abnormal reversing when the gas temperature is higher than a second preset value.
9. The control method of claim 7, wherein determining whether a commutation anomaly occurs in the four-way valve based on the ratio comprises:
and determining that the four-way valve is normally reversed when the ratio is greater than or equal to a first preset value.
10. The control method according to any one of claims 8 or 9, characterized by further comprising: a process of determining the first predetermined value, the process of determining the predetermined value comprising:
acquiring the temperature of the environment where an outdoor unit of an air conditioner is located;
the predetermined value is determined in accordance with the temperature of the environment.
11. The control method according to any one of claims 7 to 9, wherein in a case where it is determined whether or not a commutation abnormality occurs in the four-way valve and the number of times of the commutation abnormality is less than a predetermined number of times, adjusting a state of a control valve so that the commutation of the four-way valve is normal, comprises:
adjusting the control valve to be in a first state, wherein the first state is a disconnection state;
acquiring the current first pressure after the control valve is in the first state for second preset time;
under the condition that the current first pressure is larger than a third preset value, adjusting the control valve to be in a second state, wherein the second state is a closed state;
obtaining a current ratio between the first pressure and the second pressure after the control valve is in the second state for a third predetermined time;
and determining whether the four-way valve has abnormal reversing according to the ratio.
12. The control method according to claim 11, wherein the second predetermined time is between 2s and 8s, the third predetermined time is between 5s and 15s, and the third predetermined value is between 1.5 and 2 MPa.
13. The control method according to claim 11, wherein the control valve is a normally open type solenoid valve,
adjusting the control valve in a first state, comprising: the electromagnetic valve is electrified, so that the electromagnetic valve is electrified,
adjusting the control valve in a first state, comprising: and powering off the electromagnetic valve.
14. The control method according to claim 6, wherein in the case where it is determined that the four-way valve is abnormally commutated, the control method further comprises:
and under the condition that the four-way valve is determined to be abnormal in reversing and the times of the abnormal reversing are greater than or equal to the preset times, controlling the air conditioner to stop and sending an alarm signal.
15. The control method according to claim 8, wherein the first predetermined value is between 1.2 and 2.0 and the second predetermined value is between 0 and 10 ℃.
16. A control device of an air conditioner according to any one of claims 1 to 5, comprising:
the detection unit is used for acquiring the ratio of current first pressure and current second pressure under the condition that the four-way valve is electrified for first preset time, wherein the first pressure is the pressure on a pipeline between the first end of the four-way valve and the compressor, and the second pressure is the pressure between the third end of the four-way valve and the compressor;
and the determining unit is used for determining whether the four-way valve has abnormal reversing according to the ratio.
17. An air conditioning system comprising an air conditioner and a control device, wherein the air conditioner is the air conditioner of any one of claims 1 to 5, and the control device is configured to execute the control method of any one of claims 6 to 14.
18. A storage medium characterized by comprising a stored program, wherein the program executes the control method of any one of claims 6 to 15.
19. A processor, characterized in that the processor is configured to run a program, wherein the program is configured to execute the control method according to any one of claims 6 to 15 when running.
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