CN105698342A - Fault judgment circuit and method of four-way valve of air-conditioner and air-conditioner - Google Patents
Fault judgment circuit and method of four-way valve of air-conditioner and air-conditioner Download PDFInfo
- Publication number
- CN105698342A CN105698342A CN201610202653.7A CN201610202653A CN105698342A CN 105698342 A CN105698342 A CN 105698342A CN 201610202653 A CN201610202653 A CN 201610202653A CN 105698342 A CN105698342 A CN 105698342A
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- Prior art keywords
- display lamp
- cross valve
- air
- conditioner
- valve coil
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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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a fault judgment circuit and method of a four-way valve of an air-conditioner and the air-conditioner. The circuit comprises a first indication lamp, a thermistor connected with the first indication lamp in series, a second indication lamp, a working power source, a controllable switch and a controller connected with the controllable switch; the first end of the second indication lamp is connected with the first end of a four-way valve coil, the second end of the second indication lamp is connected with the first end of the first indication lamp, and the second end of the four-way valve coil is connected with the second end of the first indication lamp; the controller is used for controlling the controllable switch; and in the reversing process of the four-way valve, the controller controls the controllable switch to switch on so that the work power source can supply power to the circuit, and faults of the four-way valve are judged according to the working states of the first indication lamp, the second indication lamp and the thermistor. According to the judgment circuit in the embodiment, fault messages of the four-way valve coil can be effectively judged, judgment results are visually fed back to a user, the maintenance time is better shortened, and the maintenance cost is reduced.
Description
Technical field
The present invention relates to airconditioning control field, be specifically related to the failure determinating circuit of a kind of air-conditioner cross valve, method and air-conditioner。
Background technology
For air-conditioner, its pattern (such as heating mode, refrigeration mode etc.) switching is what to be realized by the commutation of cross valve, and therefore, the use frequency ratio of cross valve is higher。In actual applications, owing to instantaneous voltage crosses high factor, cross valve coil burnout being caused, thus causing that cross valve commutation goes wrong, affecting the use of air-conditioner。
In correlation technique, the fault that cross valve is abnormal can not be carried out oneself's detection by air-conditioner, therefore, when there is this fault, general user can only ask after-sale service personnel's on-site maintenance, and after-sale service personnel just can keep in repair after also needing to field diagnostic accordingly, relatively time-consuming, and cost is high。
Summary of the invention
It is contemplated that one of technical problem solved at least to a certain extent in correlation technique。For this, first purpose of the present invention is in that to propose the failure determinating circuit of a kind of air-conditioner cross valve。This circuit can effectively judge the fault message of cross valve coil, and result of determination feeds back to user intuitively, thus shortening maintenance time, reduces maintenance cost。
Second purpose of the present invention is in that to propose a kind of air-conditioner。
3rd purpose of the present invention is in that to propose the failure judgment method of a kind of air-conditioner cross valve。
For achieving the above object, the embodiment of first aspect present invention proposes the failure determinating circuit of a kind of air-conditioner cross valve, including: the first display lamp；Critesistor, described critesistor and described first display lamp are connected in series, and form primary nodal point between described critesistor and described first display lamp；Second display lamp, first end of described second display lamp is connected with the first end of cross valve coil, second end of described second display lamp is connected with the first end of described first display lamp, second end of described cross valve coil is connected with the second end of described first display lamp, and forms secondary nodal point between described cross valve coil and described first display lamp；Working power；Gate-controlled switch；And controller, described controller is connected with described gate-controlled switch, for controlling described gate-controlled switch Guan Bi when described cross valve commutates；Wherein, when described cross valve commutates, described controller controls described gate-controlled switch Guan Bi, so that described working power powers to described circuit, judges the fault of described cross valve coil according to the duty of described first display lamp, described second display lamp and described critesistor。
The failure determinating circuit of air-conditioner cross valve according to embodiments of the present invention, the fault message of air-conditioner cross valve can be effectively judged by the duty of display lamp in circuit and critesistor, and result of determination can be fed back to client intuitively, thus, user is reminded to carry out respective handling in time, decrease the after-sales service time, reduce maintenance cost。
It addition, the failure determinating circuit of the air-conditioner cross valve of the above embodiment of the present invention can also include following additional technical feature:
According to one embodiment of present invention, described failure determinating circuit also includes: the first resistance, and the first end of described first resistance is connected with the first end of described second display lamp, and the second end of described first resistance is connected with described primary nodal point；Second resistance, the first end of described second resistance is connected with described gate-controlled switch, and the second end of described second resistance is connected with described secondary nodal point。
According to one embodiment of present invention, the described duty according to described first display lamp, described second display lamp and described critesistor judges the state of described cross valve coil, including: if described first display lamp is bright, described second display lamp is bright, then judge that described cross valve coil is normal；If described first display lamp is bright, described second display lamp goes out, then judge described cross valve coil open circuit；And if described critesistor action, described first display lamp goes out, and described second display lamp goes out, then judge described cross valve coil short。
According to one embodiment of present invention, described gate-controlled switch is normally opened relay。
For achieving the above object, the embodiment of second aspect present invention proposes a kind of air-conditioner, including the failure determinating circuit of the air-conditioner cross valve of the above embodiment of the present invention。
The air-conditioner of the embodiment of the present invention is by the failure determinating circuit of above-mentioned air-conditioner cross valve, can effectively judge the fault of air-conditioner cross valve, and result of determination can be fed back to user intuitively, contribute to user and carry out relevant treatment in time, to reduce after-sales service time number of times, reduce maintenance cost。
For achieving the above object, the embodiment of third aspect present invention proposes the failure judgment method of a kind of air-conditioner cross valve, comprise the following steps: when judging cross valve coil fault by the failure determinating circuit of the air-conditioner cross valve according to first aspect embodiment, it is judged that whether described cross valve has commutation action；If described cross valve has commutation action, then control described gate-controlled switch Guan Bi；Duty according to described first display lamp, described second display lamp and described critesistor judges the state of described cross valve coil。
The failure judgment method of air-conditioner cross valve according to embodiments of the present invention, the fault message of air-conditioner cross valve can be effectively judged by the duty of display lamp in failure determinating circuit and critesistor, and result of determination can be fed back to client intuitively, thus, user is reminded to carry out respective handling in time, decrease the after-sales service time, reduce maintenance cost。
It addition, the failure determinating circuit of air-conditioner cross valve according to the above embodiment of the present invention can also include following additional technical feature:
According to one embodiment of present invention, the described duty according to described first display lamp, described second display lamp and described critesistor judges the state of described cross valve coil, including: if described first display lamp is bright, described second display lamp is bright, then judge that described cross valve coil is normal；If described first display lamp is bright, described second display lamp goes out, then judge described cross valve coil open circuit；And if described critesistor action, described first display lamp goes out, and described second display lamp goes out, then judge described cross valve coil short。
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage are from conjunction with will be apparent from easy to understand the accompanying drawings below description to embodiment, wherein:
Fig. 1 is the structural representation of the failure determinating circuit of air-conditioner cross valve according to an embodiment of the invention；
Fig. 2 is the flow chart of the failure judgment method of air-conditioner cross valve according to an embodiment of the invention；
Fig. 3 is the flow chart of the failure judgment method of the air-conditioner cross valve according to one specific embodiment of the present invention。
Accompanying drawing labelling:
First display lamp LED1, critesistor PTC, the second display lamp LED2, working power U, gate-controlled switch Q1, controller 10 and cross valve coil 4-WAY。
Detailed description of the invention
Being described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of same or like function from start to finish。The embodiment described below with reference to accompanying drawing is illustrative of, it is intended to is used for explaining the present invention, and is not considered as limiting the invention。
Below with reference to the accompanying drawings the failure determinating circuit of air-conditioner cross valve of the embodiment of the present invention, method and air-conditioner are described。
Fig. 1 is the failure determinating circuit of air-conditioner cross valve according to an embodiment of the invention。
As it is shown in figure 1, the failure determinating circuit of this air-conditioner cross valve includes: the first display lamp LED1, critesistor PTC, the second display lamp LED2, working power U, gate-controlled switch Q1 and controller 10。
Wherein, critesistor PTC and the first display lamp LED1 is connected in series, and forms primary nodal point between critesistor PTC and the first display lamp LED1；First end of the second display lamp LED2 is connected with first end of cross valve coil 4-WAY, second end of the second display lamp LED2 and first end of the first display lamp LED1 are connected, second end of cross valve coil 4-WAY and second end of the first display lamp LED1 are connected, and form secondary nodal point between cross valve coil 4-WAY and the first display lamp LED1；Controller 10 is connected with gate-controlled switch Q1, for controlling the Guan Bi of gate-controlled switch Q1 when cross valve commutates。
Wherein, gate-controlled switch Q1 is normally opened relay。When cross valve being carried out fault verification, gate-controlled switch Q1 is off state, to reduce energy loss。
In an embodiment of the present invention, when cross valve commutates, controller 10 controls gate-controlled switch Guan Bi, so that working power is powered to circuit, judges the state of cross valve coil 4-WAY according to the duty of the first display lamp, the second display lamp and critesistor。
Specifically, if the first display lamp is bright, the second display lamp is bright, then judge that cross valve coil 4-WAY is normal；If the first display lamp is bright, the second display lamp goes out, then judge cross valve coil 4-WAY open circuit；And if critesistor action, the first display lamp goes out, and the second display lamp goes out, then judge cross valve coil 4-WAY short circuit。
Specifically, the first display lamp is bright, and the second display lamp is bright, illustrates that the decision circuit shown in Fig. 1 is in the conduction state, and forms two loops, and the resistance that cross valve coil 4-WAY accesses circuit is normal, and namely cross valve coil 4-WAY is normal。First display lamp is bright, and the second display lamp goes out, and cross valve coil 4-WAY infinite is described so that the second display lamp LED2 does not have electric current to flow through, and both end voltage is zero, i.e. cross valve coil 4-WAY open circuit。Critesistor PTC action, first display lamp LED1 goes out, second display lamp LED2 goes out, illustrate that the temperature rise of critesistor PTC exceedes switch temperature, the resistance of critesistor PTC is very big so that the first display lamp LED1 and the second display lamp LED2 both end voltage are almost nil, and stream occurred in failure determinating circuit, the cross valve coil 4-WAY resistance accessing failure determinating circuit is only small or be zero, i.e. cross valve coil 4-WAY short circuit。
It should be noted that when air-conditioner switches to refrigeration mode, cross valve commutates, and cross valve coil 4-WAY does not access civil power, when cross valve is carried out fault verification, cross valve coil 4-WAY cut-in operation power supply U；When air-conditioner switches to heating mode, cross valve commutates, and cross valve coil 4-WAY accesses civil power, and when cross valve is carried out fault verification, failure determinating circuit constitutes two-supply circuit with civil power。
In an embodiment of the present invention, controller 10 can receive the action command that the commutation action of cross valve produces, and then controller 10 can control gate-controlled switch Q1 Guan Bi according to this action command by corresponding control command。
It is alternatively possible to as required above-mentioned control instruction is configured, for instance can arrange in air-conditioner Preset Time after receiving cross valve action command and send above-mentioned control instruction。Wherein, Preset Time can be user-defined, it is also possible to is factory default。
In an embodiment of the present invention, as it is shown in figure 1, the failure determinating circuit of this air-conditioner cross valve can also include the first resistance R1 and the second resistance R2。
Wherein, first end of the first resistance R1 and first end of the second display lamp LED2 are connected, and second end of the first resistance R1 is connected with primary nodal point；First end of the second resistance R2 is connected with gate-controlled switch Q1, and second end of the second resistance R2 is connected with secondary nodal point。
It is understood that the first resistance R1 and the second resistance R2 plays the effect of current limliting dividing potential drop in circuit, to reduce or to avoid the damage of the first display lamp LED1 in circuit, the second display lamp LED2。
The failure determinating circuit of air-conditioner cross valve according to embodiments of the present invention, the fault message of air-conditioner cross valve can be effectively judged by the duty of display lamp in circuit and critesistor, and result of determination can be fed back to client intuitively, thus, user is reminded to carry out respective handling in time, decrease the after-sales service time, reduce maintenance cost。
Additionally, embodiments of the invention also proposed a kind of air-conditioner, it includes the failure determinating circuit of above-mentioned air-conditioner cross valve。
It should be noted that, the detailed description of the invention of air-conditioner according to embodiments of the present invention is similar with the detailed description of the invention of the failure determinating circuit of the air-conditioner cross valve of the embodiment of the present invention, specifically refer to the description of the failure determinating circuit part of air-conditioner cross valve, in order to reduce redundancy, do not repeat herein。
The air-conditioner of the embodiment of the present invention is by the failure determinating circuit of above-mentioned air-conditioner cross valve, can effectively judge the fault of air-conditioner cross valve, and result of determination can be fed back to user intuitively, contribute to user and carry out relevant treatment in time, to reduce after-sales service time number of times, reduce maintenance cost。
It addition, other of air-conditioner according to embodiments of the present invention is constituted and effect is all known for the ordinary skill in the art, in order to reduce redundancy, do not repeat herein。
Fig. 2 is the flow chart of the failure judgment method of the air-conditioner cross valve of the embodiment of the present invention。
As in figure 2 it is shown, the failure judgment method of this air-conditioner cross valve comprises the following steps:
S101, when judging cross valve coil fault by the failure determinating circuit of the air-conditioner cross valve according to above-described embodiment, it is judged that whether cross valve has commutation action。
S102, if cross valve has commutation action, then controls gate-controlled switch Guan Bi。
S103, judges the state of cross valve coil according to the duty of the first display lamp, the second display lamp and critesistor。
In an embodiment of the present invention, as it is shown on figure 3, step S103 farther includes:
S1031, if the first display lamp is bright, the second display lamp is bright, then judge that cross valve coil is normal。
S1032, if the first display lamp is bright, the second display lamp goes out, then judge cross valve coil open circuit。
S1033, if critesistor action, the first display lamp goes out, and the second display lamp goes out, then judge cross valve coil short。
It should be noted that the detailed description of the invention of the failure judgment method of the air-conditioner cross valve of the embodiment of the present invention is identical with the embodiment of the failure determinating circuit of the air-conditioner cross valve of the embodiment of the present invention, do not repeat herein。
The failure judgment method of air-conditioner cross valve according to embodiments of the present invention, the fault message of air-conditioner cross valve can be effectively judged by the duty of display lamp in failure determinating circuit and critesistor, and result of determination can be fed back to client intuitively, thus, user is reminded to carry out respective handling in time, decrease the after-sales service time, reduce maintenance cost。
In describing the invention, it is to be understood that term " first ", " second " only for descriptive purposes, and it is not intended that instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic。Thus, define " first ", the feature of " second " can express or implicitly include at least one this feature。In describing the invention, " multiple " are meant that at least two, for instance two, three etc., unless otherwise expressly limited specifically。
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or integral；Can be mechanically connected, it is also possible to be electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be connection or the interaction relationship of two elements of two element internals, unless otherwise clear and definite restriction。For the ordinary skill in the art, it is possible to understand above-mentioned term concrete meaning in the present invention as the case may be。
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example describe are contained at least one embodiment or the example of the present invention。In this manual, the schematic representation of above-mentioned term is necessarily directed to identical embodiment or example。And, the specific features of description, structure, material or feature can combine in one or more embodiments in office or example in an appropriate manner。Additionally, when not conflicting, the feature of the different embodiments described in this specification or example and different embodiment or example can be carried out combining and combining by those skilled in the art。
Although above it has been shown and described that embodiments of the invention, it is understandable that, above-described embodiment is illustrative of, it is impossible to be interpreted as limitation of the present invention, and above-described embodiment can be changed, revises, replace and modification by those of ordinary skill in the art within the scope of the invention。
Claims (7)
1. the failure determinating circuit of an air-conditioner cross valve, it is characterised in that including:
First display lamp；
Critesistor, described critesistor and described first display lamp are connected in series, and form primary nodal point between described critesistor and described first display lamp；
Second display lamp, first end of described second display lamp is connected with the first end of cross valve coil, second end of described second display lamp is connected with the first end of described first display lamp, second end of described cross valve coil is connected with the second end of described first display lamp, and forms secondary nodal point between described cross valve coil and described first display lamp；
Working power；
Gate-controlled switch；And
Controller, described controller is connected with described gate-controlled switch, for controlling described gate-controlled switch Guan Bi when described cross valve commutates；
Wherein, when described cross valve commutates, described controller controls described gate-controlled switch Guan Bi, so that described working power powers to described circuit, judges the state of described cross valve coil according to the duty of described first display lamp, described second display lamp and described critesistor。
2. the failure determinating circuit of air-conditioner cross valve as claimed in claim 1, it is characterised in that also include:
First resistance, the first end of described first resistance is connected with the first end of described second display lamp, and the second end of described first resistance is connected with described primary nodal point；
Second resistance, the first end of described second resistance is connected with described gate-controlled switch, and the second end of described second resistance is connected with described secondary nodal point。
3. the failure determinating circuit of air-conditioner cross valve as claimed in claim 1, it is characterised in that the described duty according to described first display lamp, described second display lamp and described critesistor judges the state of described cross valve coil, including:
If described first display lamp is bright, described second display lamp is bright, then judge that described cross valve coil is normal；
If described first display lamp is bright, described second display lamp goes out, then judge described cross valve coil open circuit；And
If described critesistor action, described first display lamp goes out, and described second display lamp goes out, then judge described cross valve coil short。
4. the failure determinating circuit of air-conditioner cross valve as claimed in claim 2, it is characterised in that described gate-controlled switch is normally opened relay。
5. an air-conditioner, it is characterised in that include the failure determinating circuit of air-conditioner cross valve according to any one of claim 1-4。
6. the failure judgment method of an air-conditioner cross valve, it is characterised in that comprise the following steps:
When judging cross valve coil fault by the failure determinating circuit of the air-conditioner cross valve according to any one of claim 1-4, it is judged that whether described cross valve has commutation action；
If described cross valve has commutation action, then control described gate-controlled switch Guan Bi；
Duty according to described first display lamp, described second display lamp and described critesistor judges the state of described cross valve coil。
7. the failure determinating circuit of air-conditioner cross valve as claimed in claim 6, it is characterised in that the described duty according to described first display lamp, described second display lamp and described critesistor judges the state of described cross valve coil, including:
If described first display lamp is bright, described second display lamp is bright, then judge that described cross valve coil is normal；
If described first display lamp is bright, described second display lamp goes out, then judge described cross valve coil open circuit；And
If described critesistor action, described first display lamp goes out, and described second display lamp goes out, then judge described cross valve coil short。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610202653.7A CN105698342B (en) | 2016-03-31 | 2016-03-31 | Failure determinating circuit, method and the air conditioner of air conditioner four-way valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610202653.7A CN105698342B (en) | 2016-03-31 | 2016-03-31 | Failure determinating circuit, method and the air conditioner of air conditioner four-way valve |
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| CN105698342A true CN105698342A (en) | 2016-06-22 |
| CN105698342B CN105698342B (en) | 2018-07-10 |
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| CN201610202653.7A Active CN105698342B (en) | 2016-03-31 | 2016-03-31 | Failure determinating circuit, method and the air conditioner of air conditioner four-way valve |
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| CN109237722A (en) * | 2018-09-20 | 2019-01-18 | 珠海格力电器股份有限公司 | Four-way valve fault detection method, four-way valve fault detection means and air-conditioning system |
| CN111520816A (en) * | 2020-05-13 | 2020-08-11 | 宁波奥克斯电气股份有限公司 | Method and device for detecting reversing abnormality of four-way valve, air conditioner and storage medium |
| US20210302041A1 (en) * | 2020-03-27 | 2021-09-30 | Lennox Industries Inc. | Determination of stuck reversing valve |
| CN113654576A (en) * | 2021-07-02 | 2021-11-16 | 华人运通(江苏)技术有限公司 | Four-way valve position identification method and system based on water pump current |
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| CN113654576B (en) * | 2021-07-02 | 2023-12-19 | 华人运通(江苏)技术有限公司 | Four-way valve position identification method and system based on water pump current |
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|---|---|
| CN105698342B (en) | 2018-07-10 |
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