CN112944498A - Control circuit of mobile dehumidifier - Google Patents
Control circuit of mobile dehumidifier Download PDFInfo
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- CN112944498A CN112944498A CN202110155115.8A CN202110155115A CN112944498A CN 112944498 A CN112944498 A CN 112944498A CN 202110155115 A CN202110155115 A CN 202110155115A CN 112944498 A CN112944498 A CN 112944498A
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- 238000011084 recovery Methods 0.000 claims abstract description 12
- 238000005057 refrigeration Methods 0.000 claims description 20
- 230000006870 function Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007791 dehumidification Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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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
- F24F11/70—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
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
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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
- F24F11/88—Electrical aspects, e.g. circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a control circuit of a mobile dehumidifier.A normally open contact of a fan starting button and a normally closed contact of a fan stopping button are connected in series and then are connected to a set coil of a double-coil latching relay to form a starting memory circuit of a fan; a normally open contact of the fan stop button is connected to a reset coil of the double-coil latching relay to form a stop memory circuit of the fan, and the fan is kept in a stopped state after the fan stop button is released; the contacts of the double-coil latching relay are connected in series with the coil of the fan operation control alternating current contactor to form a fan operation state self-recovery circuit. The control circuit of the mobile dehumidifier can ensure that the dehumidifier memorizes the working state after power failure and recovers the working state before power failure after power failure.
Description
Technical Field
The invention relates to the field of dehumidifiers, in particular to a control circuit of a mobile dehumidifier.
Background
The movable dehumidifier is flexible and mobile dehumidification equipment, and can be conveniently moved to a place needing dehumidification to work. With the improvement of living standard, people have higher and higher requirements on living quality and certain requirements on air humidity, and in some special places such as underground garages, because the humidity is higher all the year round, in order to prevent articles in the garages from rusting, the humidity in the garages needs to be controlled by a dehumidifier. The dehumidifier has wide application and has permeated into various aspects of life of people.
Although the control circuit of the existing mobile dehumidifier is simple, the operation is inconvenient, the starting and stopping buttons on the manual operation equipment are needed to control the starting and stopping of the unit after the unit is electrified again each time, when the plurality of dehumidifiers are used in subareas and in segments and the power is off, if the unit is originally operated, the starting of the unit after the electrification again needs personnel to manually operate the unit by unit on site to start the unit, if the unit is originally stopped, the unit can still automatically operate after the electrification again, and the personnel must manually shut down the unit by unit on site, so that a large workload is brought to the operators.
Disclosure of Invention
The invention aims to provide a control circuit of a mobile dehumidifier, which aims to solve the problems that the mobile dehumidifier in the prior art is inconvenient to operate, and the start and stop of a unit are controlled by starting and stopping buttons on manual operation equipment after the unit is electrified again each time.
The invention provides a control circuit of a mobile dehumidifier, which comprises a fan starting button, a fan stopping button, a double-coil latching relay, a fan operation control alternating current contactor and a compressor operation control alternating current contactor, wherein the fan starting button is connected with the fan stopping button;
after the fan starting button is released, the contact of the double-coil latching relay keeps the on-state when the fan is started so as to keep the fan in the starting state;
a normally open contact of the fan stop button is connected to a reset coil of the double-coil latching relay to form a stop memory circuit of the fan, and after the fan stop button is released, the contact of the double-coil latching relay keeps a disconnected state when the fan stops so as to keep the fan in a stopped state;
the contact of the double-coil latching relay is connected in series to the coil of the fan operation control alternating current contactor to form a fan operation state self-recovery circuit, and the fan operation state self-recovery circuit is used for recovering the fan operation state before the fan is powered off after the fan is powered on again;
and the normally open contact of the fan operation control alternating current contactor is connected with the coil of the compressor operation control alternating current contactor in series to form an interlocking circuit of the fan and the compressor, and the interlocking circuit is used for interlocking the operation of the compressor and the operation of the fan.
The control circuit of the mobile dehumidifier provided by the invention has the following beneficial effects:
the control circuit of the mobile dehumidifier can ensure that the dehumidifier memorizes the working state after power failure, restores the working state before power failure after power failure, memorizes the running state after power failure in the running state, restores the running state before power failure after power failure, and does not need manual intervention to independently power on the dehumidifier; and the power failure is memorized after the power failure in the stop state, and the power failure is maintained in the stop state before the power failure after the power failure is re-electrified without manual intervention.
Through a starting memory circuit of the fan, after the fan starting button is released, a contact of the double-coil latching relay keeps a connection state when the fan is started, and the fan keeps a state when the fan is started; through a stop memory circuit of the fan, after the fan stop button is released, a contact of the double-coil latching relay keeps a disconnected state when the fan stops, and the fan keeps a stopped state; the running state of the dehumidifier can be memorized by the running state self-recovery circuit of the fan, and the running state before power failure can be recovered without manual intervention after the fan is powered on again, so that the labor intensity of operators is reduced, and the management of equipment is facilitated; through the interlock circuit of fan and compressor, can interlock the operation of compressor and the operation of fan, guarantee that the fan can not start under the condition of not operating.
In addition, the control circuit of the mobile dehumidifier provided by the invention can also have the following additional technical characteristics:
furthermore, the control circuit further comprises a time relay, the time relay is connected in parallel to two ends of the control power supply, and a delay actuation contact of the time relay is connected in series with a contact of the double-coil latching relay and a coil of the fan operation control alternating current contactor to form a delay power-on circuit of the fan, and the delay power-on circuit is used for delaying the power-on of the fan within the first preset time after the control power supply of the unit is switched on.
Furthermore, the control circuit further comprises a fan thermal overload relay, the fan thermal overload relay is connected with the delay actuation contact of the time relay, the contact of the double-coil latching relay and the coil of the fan operation control alternating current contactor in series to form a fan thermal overload protection circuit, and when the fan is overloaded, the normally closed contact of the fan thermal overload relay is actuated to be disconnected so as to stop the fan from operating.
Further, control circuit still includes compressor thermal overload relay, compressor thermal overload relay with fan operation control ac contactor's normally open contact the coil of compressor operation control ac contactor is established ties, constitutes compressor thermal overload protection circuit for when the compressor transships, the normally closed contact action disconnection of compressor thermal overload relay to make the compressor stop operation.
Further, control circuit still includes refrigerating system high pressure protection switch, refrigerating system high pressure protection switch with fan operation control ac contactor's normally open contact, compressor operation control ac contactor's coil is established ties, constitutes compressor system high pressure protection circuit, and when compressor refrigerating system's high pressure exceeded the allowed scope, refrigerating system high pressure protection switch's normally closed contact disconnection to make the compressor stop operation.
Further, the control circuit further comprises a refrigeration system low-voltage protection switch, the refrigeration system low-voltage protection switch is connected with the normally open contact of the fan operation control alternating current contactor and the coil of the compressor operation control alternating current contactor in series to form a compressor system low-voltage protection circuit, and when the low voltage of the compressor refrigeration system exceeds the allowable range, the normally closed contact of the refrigeration system low-voltage protection switch is disconnected to stop the operation of the compressor.
Further, the control circuit further comprises a fan operation indicator light, and the fan operation indicator light is connected to a coil of the fan operation control alternating current contactor in parallel.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a circuit diagram of a control circuit of a mobile dehumidifier according to a first embodiment of the present invention;
fig. 2 is a circuit diagram of a control circuit of a mobile dehumidifier according to a second embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
In the present embodiment, as shown in fig. 1, the control circuit of the mobile dehumidifier, the control power voltage of the mobile dehumidifier may be, but is not limited to, AC220V, and the control circuit includes a fan start button SB1, a fan stop button SB2, a double coil latching relay KA, a fan operation control AC contactor KM1, and a compressor operation control AC contactor KM 2.
The normally open contact of fan start button SB1 connects to behind the normally closed contact of fan stop button SB2 the setting coil of twin coil latching relay KA on, constitutes the start memory circuit of fan, after releasing fan start button SB1, the on-state when the fan starts is kept to the contact of twin coil latching relay KA to make the fan keep the state when starting.
The normally open contact of the fan stop button SB2 is connected to the reset coil of the double coil latching relay KA to form a fan stop memory circuit, and after the fan stop button SB2 is released, the contact of the double coil latching relay KA keeps the off state when the fan stops so as to keep the fan in the stop state.
And the contact of the double-coil latching relay KA is connected in series with the coil of the fan operation control alternating current contactor KM1 to form a fan operation state self-recovery circuit, and the fan operation state self-recovery circuit is used for recovering the fan operation state before the fan is powered off after the fan is powered on again.
The normally open contact of the fan operation control alternating current contactor KM1 is connected in series with the coil of the compressor operation control alternating current contactor KM2 to form an interlocking circuit of the fan and the compressor, and the interlocking circuit is used for interlocking the operation of the compressor and the operation of the fan.
In another embodiment, as shown in fig. 2, the control circuit of the mobile dehumidifier, the control power voltage of the mobile dehumidifier may be AC220V, but is not limited to this voltage, and the control circuit includes a fan start button SB1, a fan stop button SB2, a double coil latching relay KA, a fan operation control AC contactor KM1, a compressor operation control AC contactor KM2, a time relay KT, a fan thermal overload relay FR1, a compressor thermal overload relay FR2, a refrigeration system high voltage protection switch SPH, a refrigeration system low voltage protection switch SPL, and a fan operation indicator light GN.
The normally open contact of fan start button SB1 connects to behind the normally closed contact of fan stop button SB2 the setting coil of twin coil latching relay KA on, constitutes the start memory circuit of fan, after releasing fan start button SB1, the on-state when the fan starts is kept to the contact of twin coil latching relay KA to make the fan keep the state when starting.
The normally open contact of the fan stop button SB2 is connected to the reset coil of the double coil latching relay KA to form a fan stop memory circuit, and after the fan stop button SB2 is released, the contact of the double coil latching relay KA keeps the off state when the fan stops so as to keep the fan in the stop state.
The time relay KT is connected in parallel at two ends of a control power supply, a delay moving contact of the time relay KT, a contact of the double-coil latching relay KA and the fan thermal overload relay FR1 are connected in series on a coil of the fan operation control alternating current contactor KM1, so that a running state self-recovery circuit of the fan, a delay power-on circuit of the fan and a fan thermal overload protection circuit are formed, and the time-delay power-on circuit, the delay power-on circuit of the fan and the fan thermal overload protection circuit are respectively used for powering on the fan in a delay manner, recovering to a running state before the power failure of the fan after the fan is powered. The time relay KT can be used for adjusting different delay times when a plurality of dehumidifiers are used at the same time, starting can be staggered, and impact on a power grid caused by simultaneous starting is avoided.
The fan operation control alternating current contactor KM1 normally open contact, the refrigerating system high pressure protection switch SPH, the refrigerating system low pressure protection switch SPL and the compressor thermal overload relay FR2 are connected in series on the coil of the compressor operation control alternating current contactor KM2, and an interlocking circuit of a fan and a compressor, a compressor thermal overload protection circuit, a compressor system high pressure protection circuit and a compressor system low pressure protection circuit are formed and are respectively used for interlocking the operation of the compressor and the operation of the fan, protecting the overload operation of the compressor, protecting the high pressure operation of the compressor system and protecting the low pressure operation of the compressor system.
The fan operation indicator light GN is connected in parallel to the coil of the fan operation control alternating current contactor KM1, and when the fan operates, the fan operation indicator light GN is bright, the fan does not operate, and the fan operation indicator light GN is not bright.
The control principle of the starting memory circuit of the fan is as follows: the fan starting button SB1 is pressed, a normally open contact of the fan starting button SB1 is closed, a set coil of the double-coil latching relay KA is electrified and sucked, and the contact of the double-coil latching relay KA is operated and connected; release fan actuating button SB1, the normally open contact of fan actuating button SB1 resets, the release of losing power of set coil of twin coil latching relay KA, the on-state when the contact of twin coil latching relay KA keeps the fan to start, and the fan is in the start-up memory state.
The control principle of the stop memory circuit of the fan is as follows: the fan stop button SB2 is pressed, a normally open contact of the fan stop button SB2 is closed, a reset coil of the double-coil latching relay KA is electrified and sucked, and a contact of the double-coil latching relay KA is reset and disconnected; release fan stop button SB2, the normally open contact of fan stop button SB2 resets, the release of losing power of reset coil of twin coil latching relay KA, the off-state when the contact of twin coil latching relay KA keeps the fan to stop, and the fan is in and stops the memory state.
The control principle of the running state self-recovery circuit of the fan is as follows: when the fan is in the start memory state, the contact of twin coil latching relay KA keeps closed, and the back is gone up to the fan, time relay KT gets electric work, time relay KT's time delay actuation closes the contact and postpones first predetermined time (for example 3 seconds) back action switch-on, makes fan operation control ac contactor KM 1's coil gets electric actuation, and the fan starts the operation, fan operation pilot lamp GN is bright, realizes the self-starting function after the time delay on the fan.
When the fan is in a stop memory state, the contact of the double-coil latching relay KA is kept disconnected, after the fan is electrified, the time relay KT is electrified to work, the delay actuation contact of the time relay KT is delayed for a first preset time (for example, 3 seconds) and then is switched on, at the moment, the coil of the fan operation control alternating current contactor KM1 is not electrified, the fan is not started, the fan operation indicator lamp GN is not lightened, and the stop state recovery function after the fan is electrified and delayed is realized.
The control principle of the interlocking circuit of the fan and the compressor is as follows: when the fan is started, the fan operates to control the normally open contact of the alternating current contactor KM1 to be closed, the compressor operates to control the coil of the alternating current contactor KM2 to be electrified and sucked, and the compressor starts to operate; when the fan stops running, the normally open contact of the fan running control alternating current contactor KM1 is disconnected, the coil of the compressor running control alternating current contactor KM2 loses power, the compressor stops running, and the functions that the running of the compressor is interlocked with the fan, the fan does not run, and the compressor is not started are realized.
The control principle of the fan thermal overload protection circuit is as follows: when the fan is overloaded and the running current of the fan exceeds the rated running current, the normally closed contact of the fan thermal overload relay FR1 acts and is disconnected, the fan stops running, and the overload protection effect is achieved on the running of the fan.
The control principle of the compressor thermal overload protection circuit is as follows: when the compressor is overloaded and the running current of the compressor exceeds the rated running current, the normally closed contact of the compressor thermal overload relay FR2 is opened, the compressor stops running, and the overload protection effect is realized on the running of the compressor.
The control principle of the high-voltage protection circuit of the compressor system is as follows: when the high pressure of the compressor refrigeration system exceeds the allowable range, the normally closed contact of the refrigeration system high-pressure protection switch SPH is disconnected, the compressor stops running, and the compressor and the refrigeration system are protected from high-pressure running.
The control principle of the low-voltage protection circuit of the compressor system is as follows: when the low pressure of the compressor refrigeration system exceeds the allowable range, the normally closed contact of the refrigeration system low-pressure protection switch SPL is disconnected, the compressor stops running, and the low-pressure running of the compressor and the refrigeration system is protected.
In summary, the control circuit of the mobile dehumidifier provided by the invention has the following beneficial effects: the control circuit of the mobile dehumidifier can ensure that the dehumidifier memorizes the working state after power failure, restores the working state before power failure after power failure, memorizes the running state after power failure in the running state, restores the running state before power failure after power failure, and does not need manual intervention to independently power on the dehumidifier; and the power failure is memorized after the power failure in the stop state, and the power failure is maintained in the stop state before the power failure after the power failure is re-electrified without manual intervention.
Through a starting memory circuit of the fan, after the fan starting button SB1 is released, a contact of the double-coil latching relay KA can keep the on-state when the fan is started, and the fan can keep the state when the fan is started; after the fan stop button SB2 is released, the contact of the double coil latching relay KA can maintain the off state when the fan is stopped and the state when the fan is stopped by the fan stop memory circuit; the running state self-recovery circuit of the fan can enable the dehumidifier to memorize the running state, and the running state before power failure can be recovered without manual intervention after the fan is powered on again, so that the labor intensity of operators is reduced, and the management of equipment is facilitated; through the interlock circuit of fan and compressor, can interlock the operation of compressor and the operation of fan, guarantee that the fan can not start under the condition of not operating.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A control circuit of a mobile dehumidifier is characterized by comprising a fan starting button, a fan stopping button, a double-coil latching relay, a fan operation control alternating current contactor and a compressor operation control alternating current contactor;
after the fan starting button is released, the contact of the double-coil latching relay keeps the on-state when the fan is started so as to keep the fan in the starting state;
a normally open contact of the fan stop button is connected to a reset coil of the double-coil latching relay to form a stop memory circuit of the fan, and after the fan stop button is released, the contact of the double-coil latching relay keeps a disconnected state when the fan stops so as to keep the fan in a stopped state;
the contact of the double-coil latching relay is connected in series to the coil of the fan operation control alternating current contactor to form a fan operation state self-recovery circuit, and the fan operation state self-recovery circuit is used for recovering the fan operation state before the fan is powered off after the fan is powered on again;
and the normally open contact of the fan operation control alternating current contactor is connected with the coil of the compressor operation control alternating current contactor in series to form an interlocking circuit of the fan and the compressor, and the interlocking circuit is used for interlocking the operation of the compressor and the operation of the fan.
2. The control circuit of the mobile dehumidifier according to claim 1, wherein the control circuit further comprises a time relay, the time relay is connected in parallel to two ends of the control power supply, and a delay actuation contact of the time relay is connected in series with a contact of the double-coil latching relay and a coil of the fan operation control ac contactor to form a delay power-on circuit of the fan, and the delay power-on circuit is used for delaying the power-on of the fan for a first preset time after the control power supply of the unit is switched on.
3. The control circuit of the mobile dehumidifier according to claim 1, wherein the control circuit further comprises a fan thermal overload relay, the fan thermal overload relay is connected in series with the delay actuation contact of the time relay, the contact of the double-coil latching relay and the coil of the fan operation control ac contactor to form a fan thermal overload protection circuit, and when the fan is overloaded, the normally closed contact of the fan thermal overload relay is actuated to be opened so as to stop the fan from operating.
4. The control circuit of the mobile dehumidifier according to claim 1, wherein the control circuit further comprises a compressor thermal overload relay, the compressor thermal overload relay is connected in series with the normally open contact of the fan operation control ac contactor and the coil of the compressor operation control ac contactor to form a compressor thermal overload protection circuit, and when the compressor is overloaded, the normally closed contact of the compressor thermal overload relay is opened to stop the compressor.
5. The control circuit of the mobile dehumidifier according to claim 1, wherein the control circuit further comprises a refrigeration system high voltage protection switch, the refrigeration system high voltage protection switch is connected in series with the normally open contact of the fan operation control ac contactor and the coil of the compressor operation control ac contactor to form a compressor system high voltage protection circuit, and when the high voltage of the compressor refrigeration system exceeds an allowable range, the normally closed contact of the refrigeration system high voltage protection switch is opened to stop the operation of the compressor.
6. The control circuit of the mobile dehumidifier according to claim 1, wherein the control circuit further comprises a low-voltage protection switch of the refrigeration system, the low-voltage protection switch of the refrigeration system is connected in series with the normally open contact of the fan operation control ac contactor and the coil of the compressor operation control ac contactor to form a low-voltage protection circuit of the compressor system, and when the low voltage of the refrigeration system of the compressor exceeds an allowable range, the normally closed contact of the low-voltage protection switch of the refrigeration system is opened to stop the operation of the compressor.
7. The control circuit of a mobile dehumidifier of claim 1 wherein said control circuit further comprises a fan operation indicator light, said fan operation indicator light is coupled in parallel to a coil of said fan operation control ac contactor.
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| CN202110155115.8A CN112944498B (en) | 2021-02-04 | 2021-02-04 | Control circuit of mobile dehumidifier |
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| CN202110155115.8A CN112944498B (en) | 2021-02-04 | 2021-02-04 | Control circuit of mobile dehumidifier |
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| CN110838711A (en) * | 2019-11-19 | 2020-02-25 | 中石化南京工程有限公司 | Anti-interference circuit |
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