CN110030702B - Detection device and control method of air conditioning unit - Google Patents
Detection device and control method of air conditioning unit Download PDFInfo
- Publication number
- CN110030702B CN110030702B CN201910325130.5A CN201910325130A CN110030702B CN 110030702 B CN110030702 B CN 110030702B CN 201910325130 A CN201910325130 A CN 201910325130A CN 110030702 B CN110030702 B CN 110030702B
- Authority
- CN
- China
- Prior art keywords
- signal
- control signal
- pressure
- component
- preset value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000004378 air conditioning Methods 0.000 title claims abstract description 26
- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 239000012528 membrane Substances 0.000 claims description 41
- 239000003507 refrigerant Substances 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000005057 refrigeration Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 7
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Fluid Mechanics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application provides a detection device and a control method of an air conditioning unit. The detection device comprises a shell, a first signal triggering part, a first sensing part, a second signal triggering part and a second sensing part. The first sensing component drives the first signal triggering component to send out a first control signal after the pressure is larger than a first preset value, and stops the first signal triggering component to send out a signal after the pressure is smaller than the first preset value. The second sensing component drives the second signal triggering component to send out a second control signal after the pressure is larger than a second preset value, and stops the second signal triggering component to send out a signal after the pressure is smaller than the second preset value. According to the technical scheme, the high and low pressure of the refrigerating system can be accurately controlled within the normal operation range, and the normal operation of the compressor and the stable operation of the refrigerating system are ensured.
Description
Technical Field
The application relates to the technical field of refrigeration equipment, in particular to a detection device and a control method of an air conditioning unit.
Background
Generally, the air conditioning unit can perform refrigeration operation in an environment of 21-52 ℃, and the refrigeration unit can be applied to household and commercial occasions. However, for special occasions, such as a machine room, an equipment room and the like, when the outdoor environment temperature is low, the indoor space is closed, the equipment is continuously heated, and the indoor temperature can be continuously increased, so that the air conditioning unit still needs to be operated at the environment temperature of below 0 ℃ or even lower to cool the indoor equipment.
When the air conditioning unit performs refrigeration operation in the low-temperature environment, the outdoor environment temperature is low, the condensing effect of the outdoor unit is too good, the high and low pressures of the refrigeration system of the air conditioning unit are low, the normal operation range of the unit is exceeded, the liquid returning operation of the compressor is realized, the overheat degree of the oil temperature cannot be ensured, the compressor is damaged, and the high and low pressures of the system are required to be controlled by adjusting the rotating speed of a fan of the outdoor unit.
However, the existing detection device is difficult to realize accurate control of the rotation speed of the fan of the outdoor unit, and further, is difficult to accurately control the pressure of the refrigeration system in an ideal range so as to solve the problem of low high and low pressure of the system during low-temperature refrigeration.
Disclosure of Invention
The embodiment of the application provides a detection device and a control method of an air conditioning unit, which are used for solving the technical problem that in the prior art, the air conditioning unit is difficult to accurately control the pressure of a refrigerating system within an ideal range.
The embodiment of the application provides a detection device, which comprises: the shell is provided with a pressure interface which is used for being communicated with a refrigerant pipeline of the air conditioning unit, and is also provided with an electric control interface which is used for transmitting electric control signals; the first signal trigger part is arranged in the shell and is connected with the electric control interface; the first sensing component is arranged in the shell and is used for sensing the pressure in the refrigerant pipeline, the first sensing component drives the first signal triggering component to send out a first control signal after the pressure is larger than a first preset value, and the first sensing component stops the first signal triggering component to send out a signal after the pressure is smaller than the first preset value; the second signal trigger part is arranged in the shell and is connected with the electric control interface; the second sensing component is arranged in the shell and is used for sensing the pressure in the refrigerant pipeline, the second sensing component drives the second signal triggering component to send out a second control signal after the pressure is larger than a second preset value, and the second sensing component stops the second signal triggering component from sending out a signal after the pressure is smaller than the second preset value; the second predetermined value is greater than the first predetermined value.
In one embodiment, the first signal triggering part includes: the first fixed contact is fixedly arranged; the first movable contact is movably arranged relative to the first fixed contact, the first movable contact is connected with the first sensing component, the first sensing component drives the first movable contact to be in contact with the first fixed contact to send out a first control signal after the pressure intensity is larger than a first preset value, and the first sensing component drives the first movable contact to be separated from the first fixed contact to stop sending out a signal after the pressure intensity is smaller than the first preset value.
In one embodiment, the second signal triggering part includes: the second fixed contact is fixedly arranged; the second movable contact is movably arranged relative to the second fixed contact, the second movable contact is connected with the second sensing component, the second sensing component drives the second movable contact to be in contact with the second fixed contact to send a second control signal after the pressure intensity is larger than a second preset value, and the second sensing component drives the second movable contact to be separated from the second fixed contact to stop sending the signal after the pressure intensity is smaller than the second preset value.
In one embodiment, the electrical control interface comprises: a common terminal electrically connected to the first movable contact and the second movable contact, respectively; the first wiring terminal is electrically connected with the first fixed contact and sends out a first control signal after the first fixed contact is contacted with the first movable contact; and the second wiring terminal is electrically connected with the second fixed contact and sends out a second control signal after the second fixed contact is contacted with the second movable contact.
In one embodiment, the first sensing component is a first elastic membrane, after the pressure is greater than a first preset value, the first elastic membrane deforms to drive the first signal triggering component to send a first control signal, and after the pressure is less than the first preset value, the first elastic membrane is in an initial state in the process of recovering, and drives the first signal triggering component to stop sending signals; and/or the second sensing component is a second elastic diaphragm, after the pressure intensity is greater than a second preset value, the second elastic diaphragm deforms to drive the second signal triggering component to send a second control signal, and after the pressure intensity is less than the second preset value, the second signal triggering component is driven to stop sending a signal in the process that the second elastic diaphragm returns to the initial state, and the action pressure of the second elastic diaphragm is greater than the action pressure of the first elastic diaphragm.
In one embodiment, the detection device further comprises: the first push rod is arranged between the first elastic membrane and the first signal triggering component, and the first elastic membrane drives the first signal triggering component to send out a first control signal or stop sending out a signal through the first push rod; and/or the second push rod is arranged between the second elastic membrane and the second signal triggering component, and the second elastic membrane drives the second signal triggering component to send out a second control signal or stop sending out a signal through the second push rod.
In one embodiment, the detection device further comprises: the detection device further comprises a fixing frame, and the first push rod and the second push rod are movably arranged on the fixing frame.
In one embodiment, the mount comprises: the first push rod is movably arranged on the first fixing frame; and/or a second fixing frame, on which the second push rod is movably installed.
The application also provides a control method of the air conditioning unit, which is used for controlling the air conditioning unit by the detection device, and comprises a low-temperature control mode, wherein the low-temperature control mode comprises the following steps: receiving a first control signal and a second control signal through an electric control interface; when the first control signal and the second control signal are not received, controlling an outdoor unit fan of the air conditioning unit to reduce the rotating speed; when the first control signal is received and the second control signal is not received, controlling the fan of the outdoor unit to keep rotating speed; and when the first control signal and the second control signal are received, controlling the outdoor unit fan to increase the rotating speed.
In one embodiment, when the first control signal and the second control signal are not received, the rotation speed of the first-gear outdoor unit fan is reduced every T1 time.
In one embodiment, when the first control signal and the second control signal are received, the rotation speed of the first-gear outdoor unit fan is increased every T2 time.
In one embodiment the control method further comprises: detecting a temperature value of an outdoor environment; when the temperature value is smaller than the preset temperature, a low-temperature control mode is started; and when the temperature value is greater than the preset temperature, the low-temperature control mode is deactivated.
In the above embodiment, when the pressure in the refrigerant pipeline is smaller than the first predetermined value, the first signal triggering part and the second signal triggering part will not send out signals, and when the first control signal and the second control signal are not received, the high pressure and the low pressure of the refrigerating system are low, so that the fan of the outdoor unit of the air conditioning unit can be controlled to reduce the rotating speed, the condensing effect of the outdoor unit is reduced, the high pressure and the low pressure of the refrigerating system are restored to the normal operating range, and the operation of the compressor is further ensured;
when the pressure in the refrigerant pipeline is higher than a first preset value and lower than a second preset value, the first signal triggering part sends out a first control signal, the second signal triggering part does not send out a signal, when the first control signal is received and the second control signal is not received, the fact that the high and low pressures of the refrigerating system are in a normal operation range at the moment is indicated, and the fan of the outdoor unit is controlled to keep the rotating speed at the moment;
when the pressure in the refrigerant pipeline is higher than a second preset value, the first signal triggering part sends out a first control signal and the second signal triggering part sends out a second control signal, and when the first control signal is received and the second control signal is received, the fact that the high and low pressures of the refrigerating system exceed the normal operation range is indicated, the fan of the outdoor unit is controlled to increase the rotating speed, the condensing effect of the outdoor unit can be improved, the high and low pressures of the refrigerating system are restored to the normal operation range, and then the normal operation of the refrigerating system is guaranteed.
By adopting the detection device, the high and low pressure of the refrigerating system can be accurately controlled within the normal operation range by one detection device, the normal operation of the compressor and the stable operation of the refrigerating system are ensured, the air conditioning unit can reliably perform refrigeration operation in a low-temperature environment, the refrigeration requirement of special occasions is met, and the precision is high and the cost is low.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 is a schematic overall structure of an embodiment of a detecting device according to the present application;
fig. 2 is a flow chart illustrating a control method of an air conditioning unit according to the present application.
Detailed Description
The present application will be described in further detail with reference to the following embodiments and the accompanying drawings, in order to make the objects, technical solutions and advantages of the present application more apparent. The exemplary embodiments of the present application and the descriptions thereof are used herein to explain the present application, but are not intended to limit the application.
Fig. 1 shows an embodiment of the detection device of the present application, which comprises a housing 10, a first signal triggering part 20, a first sensing part 30, a second signal triggering part 40 and a second sensing part 50. The shell 10 is provided with a pressure interface 11, the pressure interface 11 is used for being communicated with a refrigerant pipeline of an air conditioning unit, the shell 10 is also provided with an electric control interface, and the electric control interface is used for transmitting electric control signals. The first signal triggering part 20 is provided in the housing 10 and is connected to the electric control interface. The first sensing component 30 is disposed in the housing 10, and is configured to sense a pressure in the refrigerant pipeline, and after the pressure is greater than a first predetermined value, the first sensing component 30 drives the first signal triggering component 20 to send a first control signal, and after the pressure is less than the first predetermined value, the first sensing component 30 stops the first signal triggering component 20 from sending a signal. A second signal triggering part 40 is disposed in the housing 10 and connected to the electric control interface. The second sensing component 50 is disposed in the housing 10, and is configured to sense a pressure in the refrigerant pipeline, and after the pressure is greater than a second predetermined value, the second sensing component 50 drives the second signal triggering component 40 to send a second control signal, and after the pressure is less than the second predetermined value, the second sensing component 50 stops the second signal triggering component 40 from sending a signal. The second predetermined value is greater than the first predetermined value.
By applying the technical scheme of the application, when the pressure in the refrigerant pipeline is smaller than a first preset value, the first signal triggering part 20 and the second signal triggering part 40 can not send out signals, and when the first control signal and the second control signal are not received, the condition that the high and low pressures of the refrigerating system are low at the moment is indicated, the fan of the outdoor unit of the air conditioner unit can be controlled to reduce the rotating speed, the condensing effect of the outdoor unit is reduced, the high and low pressures of the refrigerating system are restored to the normal operation range, and the operation of the compressor is further ensured;
when the pressure in the refrigerant pipeline is smaller than the second preset value when the pressure is larger than the first preset value, the first signal triggering part 20 sends out a first control signal, the second signal triggering part 40 does not send out a signal, when the first control signal is received and the second control signal is not received, the high and low pressures of the refrigeration system are within the normal operation range, and the fan of the outdoor unit is controlled to keep the rotating speed;
when the pressure in the refrigerant pipeline is greater than a second preset value, the first signal triggering part 20 sends out a first control signal and the second signal triggering part 40 sends out a second control signal, when the first control signal is received and the second control signal is received, the fact that the high and low pressures of the refrigerating system exceed the normal operation range is indicated, the fan of the outdoor unit is controlled to increase the rotating speed, the condensing effect of the outdoor unit can be improved, the high and low pressures of the refrigerating system are restored to the normal operation range, and then the normal operation of the refrigerating system is guaranteed.
By adopting the detection device, the high and low pressure of the refrigerating system can be accurately controlled within the normal operation range by one detection device, the normal operation of the compressor and the stable operation of the refrigerating system are ensured, the air conditioning unit can reliably perform refrigeration operation in a low-temperature environment, the refrigeration requirement of special occasions is met, and the precision is high and the cost is low.
As an alternative embodiment, as shown in fig. 1, in the technical solution of the present embodiment, the first signal triggering part 20 includes a first fixed contact 21 and a first movable contact 22, the first fixed contact 21 is fixedly disposed, and the first movable contact 22 is movably disposed with respect to the first fixed contact 21. The first movable contact 22 is connected with the first sensing component 30, after the pressure is larger than a first preset value, the first sensing component 30 drives the first movable contact 22 to be in contact with the first fixed contact 21 to send a first control signal, and after the pressure is smaller than the first preset value, the first sensing component 30 drives the first movable contact 22 to be separated from the first fixed contact 21 to stop sending a signal. Alternatively, the second signal trigger part 40 includes a second fixed contact 41 and a second movable contact 42, the second fixed contact 41 being fixedly disposed, and the second movable contact 42 being movably disposed with respect to the second fixed contact 41. The second movable contact 42 is connected to the second sensing member 50, and after the pressure is greater than a second predetermined value, the second sensing member 50 drives the second movable contact 42 to contact the second fixed contact 41 to send a second control signal, and after the pressure is less than the second predetermined value, the second sensing member 50 drives the second movable contact 42 to separate from the second fixed contact 41 to stop sending a signal.
As an alternative embodiment not shown in the figures, the first signal triggering part 20 and the second signal triggering part 40 may also be micro switches or other kinds of single switches.
As shown in fig. 1, in the technical solution of the present embodiment, the electrical control interface includes a common terminal 12, a first terminal 13, and a second terminal 14. The common terminal 12 is electrically connected to the first movable contact 22 and the second movable contact 42, respectively, and the first terminal 13 is electrically connected to the first fixed contact 21, and the first terminal 13 emits a first control signal after the first fixed contact 21 contacts the first movable contact 22. The second terminal 14 is electrically connected to the second fixed contact 41, and the second terminal 14 emits a second control signal after the second fixed contact 41 contacts the second movable contact 42. When in use, the public terminal 12 can be connected with electricity, the first fixed contact 21 and the first movable contact 22 are kept in a normally-off state, and after the first fixed contact 21 is contacted with the first movable contact 22, the first terminal 13 sends out a first control signal; after the second fixed contact 41 contacts the second movable contact 42, the second terminal 14 emits a second control signal.
As shown in fig. 1, as a preferred embodiment, the first sensing component 30 is a first elastic membrane, after the pressure is greater than a first predetermined value, the first elastic membrane deforms to drive the first signal triggering component 20 to send a first control signal, and after the pressure is less than the first predetermined value, the first elastic membrane is driven to stop sending the signal in the process of returning to the initial state; the second sensing component 50 is a second elastic membrane, after the pressure is greater than a second predetermined value, the second elastic membrane deforms to drive the second signal triggering component 40 to send a second control signal, and after the pressure is less than the second predetermined value, the second elastic membrane is driven to stop sending a signal in the process of restoring to the initial state. The action pressure of the second elastic membrane is larger than that of the first elastic membrane, and when the pressure in the refrigerant pipeline is smaller than a first preset value, the first elastic membrane and the second elastic membrane are not deformed; when the pressure in the refrigerant pipeline is higher than a first preset value and lower than a second preset value, the first elastic membrane is deformed, and the second elastic membrane is not deformed; when the pressure in the refrigerant pipeline is higher than a second preset value, the first elastic membrane and the second elastic membrane are deformed.
More preferably, as shown in fig. 1, the detecting device further includes a first push rod 61 and a second push rod 62. The first push rod 61 is disposed between the first elastic membrane and the first signal triggering part 20, and the first elastic membrane drives the first signal triggering part 20 to send out a first control signal or stop sending out a signal through the first push rod 61. The first elastic membrane is deformed and then drives the first fixed contact 21 to contact with the first movable contact 22 through the first push rod 61, and the first elastic membrane is restored to the initial state and then drives the first fixed contact 21 to be separated from the first movable contact 22 through the first push rod 61. The second push rod 62 is connected between the second elastic membrane and the second signal triggering component 40, and the second elastic membrane drives the second signal triggering component 40 to send out a second control signal or stop sending out a signal through the second push rod 62. The second elastic membrane is deformed and then drives the second fixed contact 41 to contact with the second movable contact 42 through the second push rod 62, and the first elastic membrane is restored to the initial state and then drives the second fixed contact 41 to be separated from the second movable contact 42 through the second push rod 62.
Optionally, in the technical solution of this embodiment, the detecting device further includes a fixing frame, and the first push rod 61 and the second push rod 62 are movably mounted on the fixing frame. More preferably, in the technical solution of the present embodiment, the detecting device further includes a first fixing frame 71 and a second fixing frame 72. The first push rod 61 is movably mounted on the first fixing frame 71 to achieve stable movement of the first push rod 61; the second push rod 62 is movably mounted on the second fixing frame 72 to achieve stable movement of the second push rod 62.
As shown in fig. 2, the present application further provides a control method of an air conditioning unit, where the control method controls the air conditioning unit by using the above detection device, and the control method includes a low temperature control mode, where the low temperature control mode includes:
receiving a first control signal and a second control signal through an electric control interface;
when the first control signal and the second control signal are not received, controlling an outdoor unit fan of the air conditioning unit to reduce the rotating speed;
when the first control signal is received and the second control signal is not received, controlling the fan of the outdoor unit to keep rotating speed;
and when the first control signal and the second control signal are received, controlling the outdoor unit fan to increase the rotating speed.
The low temperature mentioned above means a temperature at which the ambient temperature is lower than 21 ℃.
When the pressure in the refrigerant pipeline is smaller than a first preset value, the first signal triggering part 20 and the second signal triggering part 40 can not send out signals, and when the first control signal and the second control signal are not received, the fact that the high pressure and the low pressure of the refrigerating system are low at the moment is indicated, the fan of the outdoor unit of the air conditioner unit can be controlled to reduce the rotating speed, the condensing effect of the outdoor unit is reduced, the high pressure and the low pressure of the refrigerating system are restored to the normal operation range, and the operation of the compressor is further ensured;
when the pressure in the refrigerant pipeline is smaller than the second preset value when the pressure is larger than the first preset value, the first signal triggering part 20 sends out a first control signal, the second signal triggering part 40 does not send out a signal, when the first control signal is received and the second control signal is not received, the high and low pressures of the refrigeration system are within the normal operation range, and the fan of the outdoor unit is controlled to keep the rotating speed;
when the pressure in the refrigerant pipeline is greater than a second preset value, the first signal triggering part 20 sends out a first control signal and the second signal triggering part 40 sends out a second control signal, when the first control signal is received and the second control signal is received, the fact that the high and low pressures of the refrigerating system exceed the normal operation range is indicated, the fan of the outdoor unit is controlled to increase the rotating speed, the condensing effect of the outdoor unit can be improved, the high and low pressures of the refrigerating system are restored to the normal operation range, and then the normal operation of the refrigerating system is guaranteed.
As a more preferred embodiment, the control method further includes: and when the first control signal and the second control signal are not received, the rotating speed of the fan of the first-gear outdoor unit is reduced at intervals of T1. More preferably, the control method further includes: and when the first control signal and the second control signal are received, the rotating speed of the fan of the first-gear outdoor unit is increased every T2 time. Through the mode, the rotating speed of the outdoor unit fan can be reduced in a staged mode, so that the rotating speed of the outdoor unit fan is better adjusted.
As another alternative embodiment, the rotation speed of the outdoor unit fan may be linearly controlled.
More preferably, the control method further includes:
detecting a temperature value of an outdoor environment;
when the temperature value is smaller than the preset temperature, a low-temperature control mode is started;
and when the temperature value is greater than the preset temperature, the low-temperature control mode is deactivated.
Thus, when the low-temperature control mode is started can be more intelligently selected according to the temperature value of the outdoor environment, so that the stability of the air conditioning unit is ensured.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, and various modifications and variations can be made to the embodiments of the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (12)
1. A detection apparatus, characterized by comprising:
the air conditioner comprises a shell (10), wherein a pressure interface (11) is arranged on the shell (10), the pressure interface (11) is used for being communicated with a refrigerant pipeline of an air conditioner unit, and an electric control interface is also arranged on the shell (10) and used for transmitting electric control signals;
the first signal trigger component (20) is arranged in the shell (10) and is connected with the electric control interface;
the first sensing component (30) is arranged in the shell (10) and is used for sensing the pressure in the refrigerant pipeline, the first sensing component (30) drives the first signal triggering component (20) to send a first control signal after the pressure is higher than a first preset value, and the first sensing component (30) stops the first signal triggering component (20) from sending a signal after the pressure is lower than the first preset value;
the second signal trigger component (40) is arranged in the shell (10) and is connected with the electric control interface;
the second sensing component (50) is arranged in the shell (10) and is used for sensing the pressure in the refrigerant pipeline, the second sensing component (50) drives the second signal triggering component (40) to send a second control signal after the pressure is higher than a second preset value, and the second sensing component (50) stops the second signal triggering component (40) from sending a signal after the pressure is lower than the second preset value;
the second predetermined value is greater than the first predetermined value.
2. The detection device according to claim 1, wherein the first signal triggering means (20) comprises:
a first fixed contact (21) fixedly arranged;
the first movable contact (22) is movably arranged relative to the first fixed contact (21), after the pressure is higher than a first preset value, the first sensing component (30) drives the first movable contact (22) to be in contact with the first fixed contact (21) to send out the first control signal, and after the pressure is lower than the first preset value, the first sensing component (30) drives the first movable contact (22) to be separated from the first fixed contact (21) to stop sending out the signal.
3. The detection device according to claim 2, wherein the second signal triggering means (40) comprises:
a second fixed contact (41) fixedly arranged;
the second movable contact (42) is movably arranged relative to the second fixed contact (41), the second sensing component (50) drives the second movable contact (42) to be in contact with the second fixed contact (41) to send out the second control signal after the pressure intensity is larger than a second preset value, and the second sensing component (50) drives the second movable contact (42) to be separated from the second fixed contact (41) to stop sending out the signal after the pressure intensity is smaller than the second preset value.
4. A test device according to claim 3, wherein the electrical control interface comprises:
a common terminal (12) electrically connected to the first movable contact (22) and the second movable contact (42), respectively;
a first terminal (13) electrically connected to the first fixed contact (21), the first terminal (13) emitting the first control signal after the first fixed contact (21) is in contact with the first movable contact (22);
and a second terminal (14) electrically connected to the second fixed contact (41), wherein the second terminal (14) emits the second control signal after the second fixed contact (41) is in contact with the second movable contact (42).
5. The detecting device according to claim 1, wherein,
the first sensing component (30) is a first elastic membrane, after the pressure is higher than a first preset value, the first elastic membrane deforms to drive the first signal triggering component (20) to send out the first control signal, and after the pressure is lower than the first preset value, the first elastic membrane drives the first signal triggering component (20) to stop sending out the signal in the process of recovering to the initial state; and/or
The second sensing component (50) is a second elastic membrane, after the pressure is higher than a second preset value, the second elastic membrane deforms to drive the second signal triggering component (40) to send out the second control signal, after the pressure is lower than the second preset value, the second elastic membrane drives the second signal triggering component (40) to stop sending out the signal in the process of recovering to the initial state, and the action pressure of the second elastic membrane is higher than that of the first elastic membrane.
6. The detection apparatus according to claim 5, characterized in that the detection apparatus further comprises:
the first push rod (61) is arranged between the first elastic membrane and the first signal triggering component (20), and the first elastic membrane drives the first signal triggering component (20) to send out the first control signal or stop sending out the signal through the first push rod (61); and/or
The second push rod (62) is arranged between the second elastic membrane and the second signal triggering component (40), and the second elastic membrane drives the second signal triggering component (40) to send out the second control signal or stop sending out the signal through the second push rod (62).
7. The device according to claim 6, further comprising a mount on which the first push rod (61) and the second push rod (62) are movably mounted.
8. The device of claim 7, wherein the holder comprises:
a first fixing frame (71), wherein the first push rod (61) is movably arranged on the first fixing frame (71); and/or
And the second push rod (62) is movably arranged on the second fixing frame (72).
9. A control method of an air conditioning unit, characterized in that the control method controls the air conditioning unit using the detection device according to any one of claims 1 to 8, the control method including a low temperature control mode including:
receiving the first control signal and the second control signal through the electric control interface;
when the first control signal and the second control signal are not received, controlling an outdoor unit fan of the air conditioning unit to reduce the rotating speed;
when the first control signal is received and the second control signal is not received, controlling the outdoor unit fan to keep rotating speed;
and when the first control signal and the second control signal are received, controlling the outdoor unit fan to increase the rotating speed.
10. The control method according to claim 9, wherein when the first control signal and the second control signal are not received, the rotational speed of the outdoor unit fan is decreased by one step every T1 time.
11. The control method according to claim 9, wherein the rotation speed of the outdoor unit fan is increased by one at every T2 time when the first control signal and the second control signal are received.
12. The control method according to claim 9, characterized in that the control method further comprises:
detecting a temperature value of an outdoor environment;
when the temperature value is smaller than a preset temperature, starting the low-temperature control mode;
and when the temperature value is larger than a preset temperature, the low-temperature control mode is deactivated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910325130.5A CN110030702B (en) | 2019-04-22 | 2019-04-22 | Detection device and control method of air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910325130.5A CN110030702B (en) | 2019-04-22 | 2019-04-22 | Detection device and control method of air conditioning unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110030702A CN110030702A (en) | 2019-07-19 |
| CN110030702B true CN110030702B (en) | 2023-09-08 |
Family
ID=67239683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910325130.5A Active CN110030702B (en) | 2019-04-22 | 2019-04-22 | Detection device and control method of air conditioning unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110030702B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543568A (en) * | 2011-12-08 | 2012-07-04 | 苏州工业园区高登威科技有限公司 | Vehicle air conditioner double pressure switch |
| CN104132431A (en) * | 2014-08-19 | 2014-11-05 | 广东志高暖通设备股份有限公司 | Air cooling air-conditioner system and control method thereof |
| CN105650817A (en) * | 2016-01-25 | 2016-06-08 | 美的集团武汉制冷设备有限公司 | Control method and control device of air-conditioner, and air-conditioner |
| WO2018150458A1 (en) * | 2017-02-14 | 2018-08-23 | 株式会社生方製作所 | Pressure switch, and hermeticall sealed electric compressor |
| CN209944685U (en) * | 2019-04-22 | 2020-01-14 | 珠海格力电器股份有限公司 | Detection device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6176626B2 (en) * | 2013-07-24 | 2017-08-09 | 日本空圧システム株式会社 | Differential pressure switch |
-
2019
- 2019-04-22 CN CN201910325130.5A patent/CN110030702B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543568A (en) * | 2011-12-08 | 2012-07-04 | 苏州工业园区高登威科技有限公司 | Vehicle air conditioner double pressure switch |
| CN104132431A (en) * | 2014-08-19 | 2014-11-05 | 广东志高暖通设备股份有限公司 | Air cooling air-conditioner system and control method thereof |
| CN105650817A (en) * | 2016-01-25 | 2016-06-08 | 美的集团武汉制冷设备有限公司 | Control method and control device of air-conditioner, and air-conditioner |
| WO2018150458A1 (en) * | 2017-02-14 | 2018-08-23 | 株式会社生方製作所 | Pressure switch, and hermeticall sealed electric compressor |
| CN209944685U (en) * | 2019-04-22 | 2020-01-14 | 珠海格力电器股份有限公司 | Detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110030702A (en) | 2019-07-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209944685U (en) | Detection device | |
| CN110030702B (en) | Detection device and control method of air conditioning unit | |
| CN105757908A (en) | Air conditioner control method and device | |
| CN108344067B (en) | Air conditioner compressor heat dissipation system and control method thereof | |
| US3898527A (en) | Motor protection apparatus and method | |
| US4101747A (en) | Differential pressure operated switch | |
| CN103715010B (en) | A kind of sulfur hexafluoride gas density relay | |
| CN103456562B (en) | A kind of sulfur hexafluoride gas density relay | |
| US6720852B2 (en) | Methods and apparatus for actuating and deactuating a switching device using magnets | |
| AU2017428640A1 (en) | Air conditioner | |
| US3796892A (en) | Timed shutdown control circuit for electric refrigeration and air conditioning systems | |
| CN203521303U (en) | Sulfur hexafluoride gas density relay | |
| US2226297A (en) | Refrigeration control system | |
| CN2901200Y (en) | Automatic regulating refrigerator temperature control switch according to environment temperature | |
| JPH11108504A (en) | Air conditioner and motor expansion valve | |
| CN218333605U (en) | Temperature control switch, refrigeration circuit and refrigeration equipment | |
| US4414820A (en) | Electrical circuit and method of controlling such | |
| US2094807A (en) | Refrigerating apparatus | |
| CN218631806U (en) | Pressure switch with time delay protection | |
| CN218351378U (en) | Temperature controller and refrigerator | |
| KR100251139B1 (en) | Refrigerant over charge prevention apparatus of vehicle air-conditioner | |
| US3538717A (en) | Refrigeration system control arrangement including heat motor operated expansion valve | |
| CN216790586U (en) | Electromagnetic coil cap of electronic expansion valve, electronic expansion valve and air conditioner | |
| US2770952A (en) | Refrigerator control system | |
| CN116404908B (en) | Band-type brake control system of servo motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |