CN104748279A - Air energy central air conditioner capable of controlling circulation pump to achieve self-inspection function - Google Patents
Air energy central air conditioner capable of controlling circulation pump to achieve self-inspection function Download PDFInfo
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- CN104748279A CN104748279A CN201510166825.5A CN201510166825A CN104748279A CN 104748279 A CN104748279 A CN 104748279A CN 201510166825 A CN201510166825 A CN 201510166825A CN 104748279 A CN104748279 A CN 104748279A
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- temperature
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- circulating pump
- return water
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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
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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
- F24F2110/00—Control inputs relating to air properties
-
- 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
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F2120/00—Control inputs relating to users or occupants
- F24F2120/20—Feedback from users
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air energy central air conditioner capable of controlling a circulation pump to achieve a self-inspection function. The air energy central air conditioner capable of controlling the circulation pump to achieve the self-inspection function comprises a central air conditioner outdoor unit, the circulation pump, an indoor wind plate, a circulation pipeline, and control circuits installed inside the devices mentioned above. The control circuits comprise a single chip machine control circuit, a temperature detection circuit, a circulation pump control circuit, a central air conditioner outdoor unit compressor control circuit, and a power supply circuit for supplying power to the circuits mentioned above. The single chip machine control circuit controls the start and close of the circulation pump control circuit and the air conditioner outdoor unit compressor control circuit based on a return water temperature detected by the temperature detection circuit. Comparing with the prior art, the air energy central air conditioner capable of controlling the circulation pump to achieve the self-inspection function has the advantages that: when the single chip machine control circuit detects the return water temperature reaches a set temperature, the central air conditioner outdoor unit stands by, and the circulation pump stops working; the circulation pump works for five minutes after every 5 to 30 minutes for detecting the temperature of the working medium, thereby taking effect of saving the electricity.
Description
Technical field
What the present invention relates to is a kind ofly possess the air energy central air conditioning that controlled circulation pump realizes self-checking function.
Background technology
Air energy central air conditioning is in the market made up of central air-conditioning off-premises station, water-circulating pump, indoor wind dish three basic elements of character, and heat-transfer working medium is pure water, connects successively between parts with circulating line, forms an airtight water circulation system.But water-circulating pump is not controlled, waste electricity, and water-circulating pump operation noise pollution is large.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide and a kind ofly possess the air energy central air conditioning that controlled circulation pump realizes self-checking function, save electric energy, reduce the noise pollution of pump operating cycle.
The present invention is achieved by the following technical solutions: a kind of possess the air energy central air conditioning that controlled circulation pump realizes self-checking function, comprises central air-conditioning off-premises station, circulating pump, indoor wind dish, be communicated with the circulating line of this central air-conditioning off-premises station, this circulating pump and this indoor wind dish and be built in the control circuit of said apparatus inside;
The power circuit that this control circuit comprises single chip machine controlling circuit, temperature sensing circuit, circulating pump control circuit, central air-conditioning compressor of outdoor unit control circuit and powers for foregoing circuit;
The delivery port of this central air-conditioning off-premises station forms the loop that intakes with being communicated with in the water inlet of this indoor wind dish by this circulating line; The delivery port of this indoor wind dish is communicated with the water inlet of this circulating pump by this circulating line, and the delivery port of this circulating pump is communicated with the water inlet of this central air-conditioning off-premises station by this circulating line, forms out water loop;
This temperature sensing circuit is located at the water inlet of this central air-conditioning off-premises station, for detecting return water temperature; This single chip machine controlling circuit controls startup and the closedown of this circulating pump control circuit and this central air-conditioning compressor of outdoor unit control circuit according to the return water temperature that this temperature sensing circuit detects.
As the further optimization of such scheme, also comprise human-computer interaction device, this human-computer interaction device is electrically connected with this single chip machine controlling circuit, for inputting design temperature, input regulating time, On/Off air energy central air conditioning, selects the control model of air energy central air conditioning.
As the further optimization of such scheme, the control method of this single chip machine controlling circuit is:
(31) control model of air energy central air conditioning is selected;
(32) if control model is heating mode:
(321) temperature sensing circuit detects the return water temperature returning central air-conditioning off-premises station, after return water temperature reaches the temperature of setting, single chip machine controlling circuit controls central air-conditioning off-premises station and quits work, signal to circulating pump simultaneously, circulating pump quits work, and working medium is in and regulates rest transition to enter step (322)
(322) in regulating time, temperature sensing circuit constantly detects return water temperature, when return water temperature > design temperature-temperature return difference, off-premises station does not start, but off-premises station signals to circulating pump, and circulating pump starts, working medium circulation, enters step (323)
(323), in working medium circulation process, temperature sensing circuit constantly detects return water temperature:
If return water temperature > design temperature-temperature return difference, close after circulating pump starts five minutes;
If return water temperature < design temperature-temperature return difference, circulating pump continues to run, and single chip machine controlling circuit controls central air-conditioning off-premises station and starts, and after return water temperature reaches the temperature of setting, returns step (321).
(33) if control model is refrigeration mode:
(331) temperature sensing circuit detects the return water temperature returning central air-conditioning off-premises station, after return water temperature reaches the temperature of setting, single chip machine controlling circuit controls central air-conditioning off-premises station and quits work, signal to circulating pump simultaneously, circulating pump quits work, and working medium is in and regulates rest transition to enter step (332)
(332) in regulating time, temperature sensing circuit constantly detects return water temperature, when return water temperature < design temperature+temperature return difference, off-premises station does not start, but off-premises station signals to circulating pump, and circulating pump starts, working medium circulation, enters step (333)
(333), in working medium circulation process, temperature sensing circuit constantly detects return water temperature:
If return water temperature < design temperature+temperature return difference, close after circulating pump starts five minutes;
If return water temperature > design temperature+temperature return difference, circulating pump continues to run, and single chip machine controlling circuit controls central air-conditioning off-premises station and starts, and after return water temperature reaches the temperature of setting, returns step (331).
As the further optimization of such scheme, this single chip machine controlling circuit comprises single-chip microcomputer F9224 chip and peripheral circuit thereof, the signal output part of this single-chip microcomputer F9224 chip is electrically connected with the signal input part of output control circuit, and the signal output part of this single-chip microcomputer F9224 chip is electrically connected with this temperature sensing circuit.
As the further optimization of such scheme, this output control circuit comprises ULN2003 chip and peripheral circuit thereof, and this ULN2003 chip first signal output part is electrically connected with circulating pump control circuit by the first relay K 1, first A.C. contactor KM1; This ULN2003 chip secondary signal output is electrically connected with central air-conditioning compressor of outdoor unit control circuit by the second relay K 2, second A.C. contactor KM2.
As the further optimization of such scheme, this temperature sensing circuit comprises thermocouple Rt, electric capacity C3 and resistance R2, after this thermocouple Rt is in parallel with this electric capacity C3, with resistance R2, then connects with this single-chip microcomputer F9224 chip electrical.
The present invention has the following advantages compared to existing technology: of the present invention a kind of to possess the air energy central air conditioning that controlled circulation pump realizes self-checking function be by central air-conditioning off-premises station, circulating line, circulating pump, indoor wind dish forms water circulation system, when Host Detection return water temperature reaches design temperature, central air-conditioning off-premises station is standby, circulating pump quits work, 5 to 30 minutes, circulating pump interval, starts five minutes, detect Temperature of Working, play saving electric energy effect.
Accompanying drawing explanation
Fig. 1 is the working medium operating structure block diagram possessing the air energy central air conditioning of controlled circulation pump self-checking function of the present invention.
Fig. 2 is Fig. 1 is the circuit structure block diagram possessing the air energy central air conditioning of controlled circulation pump self-checking function of the present invention.
Fig. 3 is the power circuit principle figure in Fig. 2.
Fig. 4 is the temperature sensing circuit schematic diagram in Fig. 2.
Fig. 5 is the output control circuit figure in Fig. 2.
Fig. 6 is the single chip machine controlling circuit figure in Fig. 2.
Fig. 7 is the circulating pump control circuit in Fig. 2.
Fig. 8 is the central air-conditioning compressor of outdoor unit control circuit in Fig. 2.
Detailed description of the invention
Elaborate to embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
See Fig. 1, a kind ofly possesses the working medium operating structure block diagram that controlled circulation pump realizes the air energy central air conditioning of self-checking function for of the present invention.Possess the air energy central air conditioning that controlled circulation pump realizes self-checking function, comprise central air-conditioning off-premises station 1, circulating pump 2, indoor wind dish 4, be communicated with the circulating line 3 of this central air-conditioning off-premises station, this circulating pump and this indoor wind dish and be built in the control circuit of said apparatus inside.Wherein, the delivery port of central air-conditioning off-premises station 1 forms the loop that intakes with being communicated with the water inlet of indoor wind dish 3 by circulating line 3.The delivery port of indoor wind dish 4 is communicated with the water inlet of circulating pump 2 by circulating line 3, and the delivery port of circulating pump 2 is communicated with by the water inlet of circulating line with central air-conditioning off-premises station 1, forms out water loop.
Be of the present inventionly a kind ofly possess the circuit structure block diagram that controlled circulation pump realizes the air energy central air conditioning of self-checking function see Fig. 2.A kind of power circuit possessing control circuit that controlled circulation pump realizes the air energy central air conditioning of self-checking function and comprise single chip machine controlling circuit, temperature sensing circuit, circulating pump control circuit, central air-conditioning compressor of outdoor unit control circuit and power for foregoing circuit.Wherein, temperature sensing circuit 11 is located at the water inlet of this central air-conditioning off-premises station, for detecting return water temperature.Single chip machine controlling circuit controls startup and the closedown of this circulating pump control circuit and this central air-conditioning compressor of outdoor unit control circuit according to the return water temperature that this temperature sensing circuit detects.
See Fig. 6, single chip machine controlling circuit comprises single-chip microcomputer F9224 chip (i.e. IC1) and peripheral circuit thereof, the signal output part of single-chip microcomputer F9224 chip is electrically connected with the signal input part of output control circuit, and the signal output part of single-chip microcomputer F9224 chip is electrically connected with temperature sensing circuit.See Fig. 6, the pin 13 of single-chip microcomputer F9224 chip is electrically connected with the P14 of temperature sensing circuit.
See Fig. 5, output control circuit comprises ULN2003 chip (i.e. IC2) and peripheral circuit (comprising relay K 1, K2 and electric capacity C4) thereof, and pin 2, the pin 3 of single-chip microcomputer F9224 chip are held with P41, P41 of ULN2003 chip respectively and be electrically connected; Annexation between each components and parts as shown in Figure 5.Be electrically connected with circulating pump control circuit by the first relay K 1, first A.C. contactor KM1 see Fig. 7, ULN2003 chip first signal output part.Be electrically connected with central air-conditioning compressor of outdoor unit control circuit by the second relay K 2, second A.C. contactor KM2 see Fig. 8, ULN2003 chip secondary signal output.
See Fig. 4, temperature sensing circuit comprises thermocouple Rt, electric capacity C3 and resistance R2, after this thermocouple Rt is in parallel with this electric capacity C3, with resistance R2, then is electrically connected with the pin 13 of single-chip microcomputer F9224 chip; Annexation between each components and parts as shown in Figure 4.
If Fig. 3 is power circuit, for by after 220V AC power rectification step-down filtering, be the voltage of the circuit with stable of other parts; Power circuit comprises voltage-stablizer IC3, electric capacity C1-C2, voltage-stabiliser tube D5, the rectifier bridge be made up of diode D1-D4, transformer T1, fuse FU; Described voltage-stablizer IC3 is three terminal integrated voltage stabilizer 78L05; Annexation between each components and parts as shown in Figure 3.
Of the present invention a kind ofly possess the air energy central air conditioning that controlled circulation pump realizes self-checking function and also comprise human-computer interaction device, this human-computer interaction device is electrically connected with this single chip machine controlling circuit, for inputting design temperature, input regulating time, On/Off air energy central air conditioning, selects the control model of air energy central air conditioning.
Wherein, the control method of single chip machine controlling circuit is: the control model being selected air energy central air conditioning by human-computer interaction device, arranges design temperature as required.
(32) if control model is heating mode:
(321) temperature sensing circuit detects the return water temperature returning central air-conditioning off-premises station, after return water temperature reaches the temperature of setting, single chip machine controlling circuit controls central air-conditioning off-premises station and quits work, signal to circulating pump simultaneously, circulating pump quits work, and working medium is in and regulates rest transition to enter step (322);
(322) in regulating time, temperature sensing circuit constantly detects return water temperature, when return water temperature > design temperature-temperature return difference, off-premises station does not start, but off-premises station signals to circulating pump, and circulating pump starts, working medium circulation, enters step (323);
(323), in working medium circulation process, temperature sensing circuit constantly detects return water temperature:
If return water temperature > design temperature-temperature return difference, close after circulating pump starts five minutes;
If return water temperature < design temperature-temperature return difference, circulating pump continues to run, and single chip machine controlling circuit controls central air-conditioning off-premises station and starts, and after return water temperature reaches the temperature of setting, returns step (321).
(33) if control model is refrigeration mode:
(331) temperature sensing circuit detects the return water temperature returning central air-conditioning off-premises station, after return water temperature reaches the temperature of setting, single chip machine controlling circuit controls central air-conditioning off-premises station and quits work, signal to circulating pump simultaneously, circulating pump quits work, working medium is in and regulates rest transition, enters step (332);
(332) in regulating time, temperature sensing circuit constantly detects return water temperature, when return water temperature < design temperature+temperature return difference, off-premises station does not start, but off-premises station signals to circulating pump, and circulating pump starts, working medium circulation, enters step (333);
(333), in working medium circulation process, temperature sensing circuit constantly detects return water temperature:
If return water temperature < design temperature+temperature return difference, close after circulating pump starts five minutes;
If return water temperature > design temperature+temperature return difference, circulating pump continues to run, and single chip machine controlling circuit controls central air-conditioning off-premises station and starts, and after return water temperature reaches the temperature of setting, returns step (331).
Of the present invention a kind ofly possess the air energy central air conditioning that controlled circulation pump realizes self-checking function, and regulating time can be arranged, and regulating time is generally 5-30 minute.
Operation principle: of the present invention a kind ofly possess the air energy central air conditioning that controlled circulation pump realizes self-checking function and be made up of central air-conditioning off-premises station, water-circulating pump, indoor wind dish three basic elements of character, heat-transfer working medium is pure water, connect successively with circulating line between parts, form an airtight water circulation system.When central air-conditioning off-premises station runs with heating mode, heat-transfer working medium heats by off-premises station, off-premises station is to circulating pump working signal simultaneously, pump operating cycle, makes working medium flow in circulating line, the capillary copper pipe of working medium in indoor wind dish of heat, by blower fan, the heat in working medium is blown in room, working medium turns cold, and is recycled to off-premises station and heats, run so forth.After the Temperature of Working (return water temperature) returning off-premises station reaches the temperature of setting, off-premises station quits work, signal to circulating pump simultaneously, circulating pump quits work, at adjustment resting state, detect return water temperature, if return water temperature > design temperature-temperature return difference, off-premises station does not start, but off-premises station signals to circulating pump, circulating pump starts, working medium circulation, now off-premises station continues to detect return water temperature, if return water temperature > design temperature-temperature return difference, circulating pump cuts out after starting five minutes, if return water temperature < design temperature-temperature return difference, circulating pump continues to run, off-premises station starts, after return water temperature reaches the temperature of setting, off-premises station, circulating pump quits work.
When central air-conditioning off-premises station runs in a chiller mode, heat-transfer working medium freezes by off-premises station, off-premises station is to circulating pump working signal simultaneously, pump operating cycle, makes working medium flow in circulating line, the capillary copper pipe of cold working medium in indoor wind dish, by blower fan, the cold in working medium is blown in room, working medium heating, is recycled to off-premises station and freezes, run so forth.After the Temperature of Working (return water temperature) returning off-premises station reaches the temperature of setting, off-premises station quits work, signal to circulating pump simultaneously, circulating pump quits work, at adjustment resting state, detect return water temperature, if return water temperature < design temperature+temperature return difference, off-premises station does not start, but off-premises station signals to circulating pump, circulating pump starts, working medium circulation, now off-premises station continues to detect return water temperature, if return water temperature < design temperature+temperature return difference, circulating pump cuts out after starting five minutes, if return water temperature > design temperature+temperature return difference, circulating pump continues to run, off-premises station starts, after return water temperature reaches the temperature of setting, off-premises station, circulating pump quits work.
Of the present invention a kind of to possess the air energy central air conditioning that controlled circulation pump realizes self-checking function be by central air-conditioning off-premises station, circulating line, circulating pump, indoor wind dish forms water circulation system, and when Host Detection return water temperature reaches design temperature, central air-conditioning off-premises station is standby, circulating pump quits work, 5 to 30 minutes, circulating pump interval, starts five minutes, wherein, circulating pump interval is adjustable setting, be generally between 5-30 minute, detect Temperature of Working, play saving electric energy effect.
Above embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that the common engineers and technicians in this area make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determine.
Claims (6)
1. possess the air energy central air conditioning of controlled circulation pump self-inspection practical function, it is characterized in that: comprise central air-conditioning off-premises station, circulating pump, indoor wind dish, be communicated with the circulating line of this central air-conditioning off-premises station, this circulating pump and this indoor wind dish and be built in the control circuit of said apparatus inside;
The power circuit that this control circuit comprises single chip machine controlling circuit, temperature sensing circuit, circulating pump control circuit, central air-conditioning compressor of outdoor unit control circuit and powers for foregoing circuit;
The delivery port of this central air-conditioning off-premises station forms the loop that intakes with being communicated with in the water inlet of this indoor wind dish by this circulating line; The delivery port of this indoor wind dish is communicated with the water inlet of this circulating pump by this circulating line, and the delivery port of this circulating pump is communicated with the water inlet of this central air-conditioning off-premises station by this circulating line, forms out water loop;
This temperature sensing circuit is located at the water inlet of this central air-conditioning off-premises station, for detecting return water temperature; This single chip machine controlling circuit controls startup and the closedown of this circulating pump control circuit and this central air-conditioning compressor of outdoor unit control circuit according to the return water temperature that this temperature sensing circuit detects.
2. according to claim 1 possess the air energy central air conditioning that controlled circulation pump realizes self-checking function, it is characterized in that: also comprise human-computer interaction device, this human-computer interaction device is electrically connected with this single chip machine controlling circuit, for inputting design temperature, input regulating time, On/Off air energy central air conditioning, selects the control model of air energy central air conditioning.
3. according to claim 1 possess the air energy central air conditioning that controlled circulation pump realizes self-checking function, it is characterized in that: the control method of this single chip machine controlling circuit is:
(31) control model of air energy central air conditioning is selected;
(32) if control model is heating mode:
(321) temperature sensing circuit detects the return water temperature returning central air-conditioning off-premises station, after return water temperature reaches the temperature of setting, single chip machine controlling circuit controls central air-conditioning off-premises station and quits work, signal to circulating pump simultaneously, circulating pump quits work, and working medium is in and regulates rest transition to enter step (322);
(322) in regulating time, temperature sensing circuit constantly detects return water temperature, when return water temperature > design temperature-temperature return difference, off-premises station does not start, but off-premises station signals to circulating pump, and circulating pump starts, working medium circulation, enters step (323);
(323), in working medium circulation process, temperature sensing circuit constantly detects return water temperature:
If return water temperature > design temperature-temperature return difference, close after circulating pump starts five minutes;
If return water temperature < design temperature-temperature return difference, circulating pump continues to run, and single chip machine controlling circuit controls central air-conditioning off-premises station and starts, and after return water temperature reaches the temperature of setting, returns step (321);
(33) if control model is refrigeration mode:
(331) temperature sensing circuit detects the return water temperature returning central air-conditioning off-premises station, after return water temperature reaches the temperature of setting, single chip machine controlling circuit controls central air-conditioning off-premises station and quits work, signal to circulating pump simultaneously, circulating pump quits work, and working medium is in and regulates rest transition to enter step (332);
(332) in regulating time, temperature sensing circuit constantly detects return water temperature, when return water temperature < design temperature+temperature return difference, off-premises station does not start, but off-premises station signals to circulating pump, and circulating pump starts, working medium circulation, enters step (333);
(333), in working medium circulation process, temperature sensing circuit constantly detects return water temperature:
If return water temperature < design temperature+temperature return difference, close after circulating pump starts five minutes;
If return water temperature > design temperature+temperature return difference, circulating pump continues to run, and single chip machine controlling circuit controls central air-conditioning off-premises station and starts, and after return water temperature reaches the temperature of setting, returns step (331).
4. according to claim 1 possess the air energy central air conditioning that controlled circulation pump realizes self-checking function, it is characterized in that: this single chip machine controlling circuit comprises single-chip microcomputer F9224 chip and peripheral circuit thereof, the signal output part of this single-chip microcomputer F9224 chip is electrically connected with the signal input part of output control circuit, and the signal output part of this single-chip microcomputer F9224 chip is electrically connected with this temperature sensing circuit.
5. according to claim 1 a kind ofly possess the air energy central air conditioning that controlled circulation pump realizes self-checking function, it is characterized in that: this output control circuit comprises ULN2003 chip and peripheral circuit thereof, this ULN2003 chip first signal output part is electrically connected with circulating pump control circuit by the first relay K 1, first A.C. contactor KM1; This ULN2003 chip secondary signal output is electrically connected with central air-conditioning compressor of outdoor unit control circuit by the second relay K 2, second A.C. contactor KM2.
6. according to claim 1 possess the air energy central air conditioning that controlled circulation pump realizes self-checking function, it is characterized in that: this temperature sensing circuit comprises thermocouple Rt, electric capacity C3 and resistance R2, after this thermocouple Rt is in parallel with this electric capacity C3, with resistance R2, then connect with this single-chip microcomputer F9224 chip electrical.
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| CN201510166825.5A CN104748279B (en) | 2015-04-09 | 2015-04-09 | Air energy central air conditioner capable of controlling circulation pump to achieve self-inspection function |
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| CN201510166825.5A CN104748279B (en) | 2015-04-09 | 2015-04-09 | Air energy central air conditioner capable of controlling circulation pump to achieve self-inspection function |
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| JP2014126207A (en) * | 2012-12-25 | 2014-07-07 | Mitsubishi Electric Corp | Air conditioner |
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| CN204629877U (en) * | 2015-04-09 | 2015-09-09 | 科希曼电器有限公司 | Possesses the air energy central air conditioning that controlled circulation pump realizes self-checking function |
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