CN201368562Y - Low-temperature refrigeration control device for air conditioners - Google Patents
Low-temperature refrigeration control device for air conditioners Download PDFInfo
- Publication number
- CN201368562Y CN201368562Y CNU2009200508901U CN200920050890U CN201368562Y CN 201368562 Y CN201368562 Y CN 201368562Y CN U2009200508901 U CNU2009200508901 U CN U2009200508901U CN 200920050890 U CN200920050890 U CN 200920050890U CN 201368562 Y CN201368562 Y CN 201368562Y
- Authority
- CN
- China
- Prior art keywords
- relay
- circuit
- comparator
- fan motor
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The utility model relates to a low-temperature refrigeration control device for air conditioners, which comprises a power supply circuit, a four-way valve identification circuit, a fan motor switch-off circuit, a wing-speed control circuit, a first relay, a second relay and an outside temperature sensor, wherein, the outside temperature sensor senses and converts outside temperature variation into a voltage signal, the voltage signal includes a sub-signal that controls the on-off of the fan motor through the fan motor switch-off circuit, the first relay and the second relay, as well as a sub-signal that controls the rotation speed of the fan motor though the wind-speed control circuit and the second relay, the first relay is meanwhile controlled by the four-way valve identification circuit, and the power supply circuit, after being electrified and converted through an outside fan motor wire, supplies power to each functional circuit. Due to the adoption of pure hardware design without need for software development and the use of a small number of inside and outside air conditioner connection wires, the low-temperature refrigeration control device provided by the utility model not only can effectively ensure safe operation of air conditioners, but also has the advantages of simple structure, low cost and convenient installation and use.
Description
Technical field
The utility model relates to the electrical equipment automation field, specifically is meant a kind of air conditioner refrigerating control device of application of cold temperature refrigeration control technology.
Background technology
The basic refrigerating function equipment of air-conditioner, normally be operated under the little situation of indoor and the outdoor environment temperature difference, but there are some special refrigeration application environment in the reality, its outdoor environment temperature is very low, the indoor environment temperature is but very high, for example, places such as high-power machine room and outdoor programme-controlled exchange machine room, air-conditioner under this particular surroundings is running refrigerating under low outdoor environment temperature, the heat exchanger of indoor machine of air-conditioner and off-premises station is easy to frosting, even cause on the pipe-line system of off-premises station and freeze, the refrigeration that influences air-conditioning is used, low-temperature refrigeration technology guarantees exactly at outdoor low temperature, under the situation of indoor high temperature, allow air-conditioning can realize refrigeration, and guarantee the precise control of indoor temperature.
Mainly be the speed by the reduction outdoor fan motor in existing low-temperature refrigeration technology, thereby reduce the heat transfer rate with what address the above problem, main implementation method has: (1) uses the rotating speed of the fan electromotor outside the microprocessor control room; (2) come fan electromotor outside the control room with microprocessor by the control controllable silicon, but method (1) needs software development, exploitation and material cost are higher, and method (2) is with the incomplete conducting of cycle of SCR control alternating current, can produce bigger electromagnetic noise like this and increase the Conduction Interference of power supply.
The utility model content
Problems such as the utility model aims to provide a kind of novel air-conditioner low-temperature refrigeration control device, and the control technology cost that exists in the existing low-temperature refrigeration technology is too high to solve, versatility is strong or off-premises station noise and Conduction Interference be big.
At the problems referred to above, the technical scheme that the utility model is taked is:
A kind of low-temperature refrigeration control device is provided, and described device comprises power circuit, cross valve identification circuit, fan electromotor shut-off circuit, wind speed control circuit, first relay, second relay and outdoor temperature sensor.The outer variations in temperature of described outdoor temperature sensor nernst cell is converted into voltage signal, whether this signal one tunnel rotates through fan electromotor shut-off circuit, first relay, second relay control fan electromotor, and another road is through wind speed control circuit, second relay control fan motor rotational speed; Described first relay is controlled by the cross valve identification circuit simultaneously; Described power circuit provides power supply by outdoor fan motor line power taking conversion back for each functional circuit.
Further, each functional circuit is arranged on the automatically controlled plate and with outdoor fan motor and integrates in the described device, and described automatically controlled plate is connected with indoor set by electrical signal line.
The electrical signal line that described indoor set exports automatically controlled plate to comprises cross valve line, outdoor fan motor line, power supply N line.
Design principle of the present utility model is: when air-conditioning was in heating mode, when promptly the cross valve line had electricity, fan electromotor was exported high wind; When being in refrigeration mode, according to different outdoor environment temperature control outdoor fan motors, realizing tap fan electromotor or operation second gear or many grades of wind speed outside the close chamber, thereby reduce the rate of heat exchange of indoor and outdoor, realize the refrigeration under the outdoor cryogenic conditions.
Fan electromotor is set in the utility model two grades of rotating speeds, when temperature is lower than T1, closes outdoor fan motor, when temperature is in T2～T3, and the low wind of operation, when temperature is higher than T3, operation high wind speed, wherein T1＜T2＜T3.
Low-temperature refrigeration control device described in the utility model adopts pure hardware design; need not software development; indoor and the outdoor connecting line of air-conditioning is few, has advantage simple for structure, that cost is low, easy to install under the prerequisite of effectively protecting the air-conditioner security of operation.
Description of drawings
Fig. 1 forms schematic block diagram for the utility model structure;
Fig. 2 is power circuit principle figure described in the utility model;
Fig. 3 is a cross valve identification circuit schematic diagram described in the utility model;
Fig. 4 is fan electromotor shut-off circuit described in the utility model and wind speed control circuit schematic diagram.
The specific embodiment
For the ease of it will be appreciated by those skilled in the art that the utility model is described in further detail below in conjunction with accompanying drawing.
As Fig. 1, the utility model comprises power circuit 11, fan electromotor shut-off circuit 12, wind speed control circuit 14, cross valve identification circuit 15, relay A, relay B and outdoor temperature sensor 13.
Described outdoor temperature sensor 13 all is connected with wind speed control circuit 14, fan electromotor shut-off circuit 12, outdoor temperature sensor signal one tunnel is controlled outdoor fan motor 16 through fan electromotor shut-off circuit 12, relay A, relay B, and the rotating speed of outdoor fan motor 16 is directly controlled on another road through wind speed control circuit 14, relay B; Described relay A is controlled by the cross valve identification circuit 15 that is connected with the cross valve line L1 of indoor output simultaneously; Described power circuit 11 all is connected with each functional circuit, and it provides power supply by outdoor fan motor line L2 power taking conversion back for each functional circuit.
Each functional circuit can be arranged on the automatically controlled plate 10 in the described device, and this automatically controlled plate 10 integrates with outdoor fan motor 16, and described automatically controlled plate 10 is connected with indoor set by electrical signal line.The electrical signal line that described indoor set exports automatically controlled plate 10 to comprises cross valve line L1, outdoor fan motor line L2, power supply N line.
As Fig. 2 is power circuit embodiment schematic diagram described in the utility model.
Power circuit 11 is by the power taking of outdoor fan motor line, output AC power source becomes the low-voltage AC of 12V after by capacitor C 303 filtering, transformer T1 transformation, behind diode D310, D311, D312, D313, capacitor C 304, C305 rectifying and wave-filtering, obtain the 12V DC voltage again, the diode mu balanced circuit that constitutes through R306, D306 carries out voltage stabilizing again, obtain the DC voltage of 5V, as the working power of other functional circuit.
Among Fig. 1, cross valve identification circuit 15 is used to judge whether air-conditioning runs on refrigerating state at present, when operation of air conditioner when heating state, cross valve line L1 has; Otherwise when running on refrigerating state, cross valve line L1 does not have.As shown in Figure 3, cross valve identification circuit 15 mainly comprises comparator IC301A, the input of comparator IC301A in-phase input end sets firmly voltage signal, the signal of cross valve line output is by optocoupler PC817 control comparator IC301A inverting input signal, and then the break-make of the working power by the triode Q301 control relay A that is connected with comparator IC301A output.
Concrete, L1, N are respectively cross valve line and N line among Fig. 3, and the Port1 end connects relay A anode power supply.Cross valve line L1 and N line are by diode D301, resistance R 301 and optocoupler PC817 constitute the loop, when operation of air conditioner when heating state, the cross valve line has, the conducting of optocoupler PC817 receiving terminal, than imitating device IC301A and R302, R303, R304 constitutes phase inverter, when the PC817 conducting, than the 14 pin output high level of imitating device IC301A, not conducting of PNP triode Q301, relay A in fan electromotor shut-off circuit and the wind speed control circuit and not adhesive of relay B like this, outdoor fan motor line like this, the A point by relay is to the C point of relay B, so outdoor fan motor moves high wind.Otherwise when operation of air conditioner during in refrigerating state, cross valve line dead electricity, the not conducting of optocoupler PC817 receiving terminal.
As shown in Figure 4, described fan electromotor shut-off circuit 12 mainly comprises comparator IC301B, the input of comparator IC301B in-phase input end sets firmly voltage signal, the collection signal of outdoor temperature sensor 13 connects comparator IC301B inverting input, and then comparator IC301B output signal is by triode Q304 control relay A.Described wind speed control circuit 14 mainly comprises comparator IC301C, the input of comparator IC301C in-phase input end sets firmly voltage signal, the collection signal of outdoor temperature sensor 13 connects comparator IC301C inverting input simultaneously, and then comparator IC301C output signal is by triode Q305 control relay B.
Concrete, L2, N end is respectively outdoor fan motor line and N line among Fig. 4.Relay A normally-closed contact A connects the intermediate contact of relay B, and B is unsettled for relay A normally opened contact, and the normally opened contact D of relay B connects the low wind shelves of fan electromotor, and normally-closed contact C connects the high wind shelves of fan electromotor.Outdoor temperature sensor M101 detects outdoor environment temperature, and it has negative temperature coefficient feature, and promptly the low sensor resistance is big more more for temperature.The described sensor M101 dividing potential drop of connecting with resistance R 317, intersection point is M.Comparator IC301C and resistance R 325, R328, R329, R327, R331, Q305 constitute wind speed control circuit 14, the size of R325, R328 resistance decision wind speed.IC301B and R318, R320, R322, R323, R324, Q304 constitute fan electromotor shut-off circuit 12, and whether R318, the decision of R322 resistance close fan electromotor.
Illustrate the control situation under the different outdoor environment temperatures below.
For example setting shutoff temperature is 6 ℃, and the high wind speed temperature is 23 ℃, can obtain resistance R 325, R328 resistance when resistance R 318, R322 resistance value ratio by calculating.
When the environment temperature outside outdoor temperature passes device sensing chamber is between 6 ℃～23 ℃, the M point voltage will be higher than the 5 pin voltages of IC301B, so the 7 pin output low levels of IC301B, then not conducting of triode Q304, and relay A is failure to actuate; Simultaneously, the M point voltage is lower than the 3 pin voltages of IC301C, therefore 1 pin of IC301C is exported high level, triode Q305 conducting, the action of relay B contact is connected in the D point, at this time the A point of outdoor fan motor line power supply by relay A arrives the N line again to the D point of relay B and forms the loop, and outdoor fan motor runs on low wind shelves.
Detect outdoor environment temperature and be higher than when being 23 ℃ when outdoor temperature passes device, the M point voltage is higher than the 5 pin voltages of IC301B, so the 7 pin output low levels of IC301B, not conducting of Q305, and relay A is failure to actuate; Simultaneously, the M point voltage is higher than the 3 pin voltages of IC301C, and therefore 1 pin is an output low level, not conducting of Q305, relay B also is failure to actuate, and at this time the A point of outdoor fan motor line power supply by relay A arrives the N line again to the C point of relay B and form the loop, and outdoor fan motor runs on high wind shelves.
When outdoor temperature biography device detection outdoor environment temperature was lower than 6 ℃, the M point voltage was lower than the 5 pin voltages of IC301B, so 7 pin of IC301B output high level, the Q304 conducting, the action of relay A contact is connected in unsettled B point, and the outdoor fan motor non-transformer is connected, and is in closed condition.
Be the utility model preferred implementation only below, need to prove, do not breaking away under the utility model design prerequisite, to its any conspicuous minor variations of doing and be equal to replacement and all belong to the utility model protection domain.
Claims (5)
1, a kind of idle call low-temperature refrigeration control device, be connected between air conditioning chamber's internal controller and the outdoor fan motor, it is characterized in that: described device comprises power circuit, cross valve identification circuit, fan electromotor shut-off circuit, wind speed control circuit, first relay, second relay and outdoor temperature sensor;
The outer variations in temperature of described outdoor temperature sensor nernst cell is converted into voltage signal, whether this signal one tunnel rotates through fan electromotor shut-off circuit, first relay, second relay control fan electromotor, and another road is through wind speed control circuit, second relay control fan motor rotational speed; Described first relay is controlled by the cross valve identification circuit simultaneously; Described power circuit provides power supply by outdoor fan motor line power taking conversion back for each functional circuit.
2, idle call low-temperature refrigeration control device according to claim 1 is characterized in that: each functional circuit is arranged on the automatically controlled plate and integrated with outdoor fan motor in the described device, and described automatically controlled plate is connected with indoor set by electrical signal line.
3, idle call low-temperature refrigeration control device according to claim 1 and 2, it is characterized in that: described cross valve identification circuit comprises comparator (IC301A), the input of comparator (IC301A) in-phase input end sets firmly voltage signal, cross valve line output signal is by optocoupler (PC817) control comparator (IC301A) inverting input signal, and then the break-make of the working power by triode (Q301) the control relay A that is connected with comparator (IC301A) output.
4, idle call low-temperature refrigeration control device according to claim 3, it is characterized in that: described fan electromotor shut-off circuit comprises comparator (IC301B), the input of comparator (IC301B) in-phase input end sets firmly voltage signal, the collection signal of outdoor temperature sensor connects comparator (IC301B) inverting input, and then comparator (IC301B) output signal is by triode (Q304) control relay A.
5, idle call low-temperature refrigeration control device according to claim 4, it is characterized in that: described wind speed control circuit comprises comparator (IC301C), the input of comparator (IC301C) in-phase input end sets firmly voltage signal, the collection signal of outdoor temperature sensor connects comparator (IC301C) inverting input simultaneously, and then comparator (IC301C) output signal is by triode (Q305) control relay B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200508901U CN201368562Y (en) | 2009-01-23 | 2009-01-23 | Low-temperature refrigeration control device for air conditioners |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200508901U CN201368562Y (en) | 2009-01-23 | 2009-01-23 | Low-temperature refrigeration control device for air conditioners |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201368562Y true CN201368562Y (en) | 2009-12-23 |
Family
ID=41487454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200508901U Expired - Fee Related CN201368562Y (en) | 2009-01-23 | 2009-01-23 | Low-temperature refrigeration control device for air conditioners |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201368562Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197699A (en) * | 2013-04-18 | 2013-07-10 | 中国扬子集团滁州扬子空调器有限公司 | Brushless DC (direct current) motor air conditioning system control circuit |
| CN103199777A (en) * | 2013-04-18 | 2013-07-10 | 中国扬子集团滁州扬子空调器有限公司 | Outdoor motor control circuit of air conditioning system of brushless motor |
| CN110611400A (en) * | 2019-10-28 | 2019-12-24 | 上海宝协新能源科技有限公司 | Cooling method of servo motor, computer storage medium, heat dissipation device and motor |
| CN111868446A (en) * | 2018-03-26 | 2020-10-30 | 三菱电机株式会社 | Air conditioner |
| CN112018627A (en) * | 2020-08-21 | 2020-12-01 | 国网新疆电力有限公司检修公司 | Sand outdoor electric power mechanism case is prevent wind to intelligence pressure-fired |
-
2009
- 2009-01-23 CN CNU2009200508901U patent/CN201368562Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197699A (en) * | 2013-04-18 | 2013-07-10 | 中国扬子集团滁州扬子空调器有限公司 | Brushless DC (direct current) motor air conditioning system control circuit |
| CN103199777A (en) * | 2013-04-18 | 2013-07-10 | 中国扬子集团滁州扬子空调器有限公司 | Outdoor motor control circuit of air conditioning system of brushless motor |
| CN103197699B (en) * | 2013-04-18 | 2015-09-30 | 中国扬子集团滁州扬子空调器有限公司 | DC brushless motor Air-condition system control circuit |
| CN103199777B (en) * | 2013-04-18 | 2015-09-30 | 中国扬子集团滁州扬子空调器有限公司 | Brushless electric machine air-conditioning system outdoor motor control circuit |
| CN111868446A (en) * | 2018-03-26 | 2020-10-30 | 三菱电机株式会社 | Air conditioner |
| CN111868446B (en) * | 2018-03-26 | 2021-10-15 | 三菱电机株式会社 | Air conditioner |
| CN110611400A (en) * | 2019-10-28 | 2019-12-24 | 上海宝协新能源科技有限公司 | Cooling method of servo motor, computer storage medium, heat dissipation device and motor |
| CN110611400B (en) * | 2019-10-28 | 2020-12-01 | 上海宝协新能源科技有限公司 | Cooling method of servo motor, computer storage medium, heat dissipation device and motor |
| CN112018627A (en) * | 2020-08-21 | 2020-12-01 | 国网新疆电力有限公司检修公司 | Sand outdoor electric power mechanism case is prevent wind to intelligence pressure-fired |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100480593C (en) | Air-conditioning energy-saving monitoring system of base station | |
| CN201348340Y (en) | Speed regulating device and air conditioner system utilizing same | |
| CN101556069B (en) | Speed adjusting device, air-conditioning system and speed adjusting method for air-conditioning system | |
| CN201368562Y (en) | Low-temperature refrigeration control device for air conditioners | |
| CN107401807B (en) | Intelligent energy-saving management control system and control method for central air conditioner | |
| CN202853051U (en) | Air conditioner | |
| CN202008206U (en) | Machine room equipment control system | |
| CN204388299U (en) | A kind of multi-online air-conditioning system being applied to subway station | |
| CN204187779U (en) | Air-conditioner | |
| CN201724336U (en) | Wireless intelligent temperature-regulating and energy-saving device | |
| CN203258794U (en) | Low-standby-power-consumption air conditioner intelligent control system | |
| CN204421290U (en) | Conditioners running conditions checkout gear | |
| CN103199776B (en) | Direct current generator fixed rotating speed and adjustable rotating speed commutation circuit outside air conditioning chamber | |
| CN201497118U (en) | Intelligent temperature control system of central air conditioner | |
| CN203518133U (en) | Base station energy-saving monitoring system | |
| CN104236019A (en) | Control system of central air conditioner and central air conditioner comprising control system | |
| CN203687286U (en) | Distributed ventilating and cooling control system for communication machine room | |
| CN204329247U (en) | A kind of control system of central air-conditioning and there is the central air-conditioning of this control system | |
| CN203720617U (en) | A communication base station machine room power saving and air exchange energy saving controlling apparatus | |
| CN202734152U (en) | Energy-saving control device of split-type air conditioner | |
| CN202735718U (en) | Air conditioner and fan linkage system | |
| CN201014673Y (en) | Base station air conditioner energy-saving monitoring apparatus | |
| CN205536392U (en) | A precision air conditioning economizer for computer lab | |
| CN201145378Y (en) | Fan rotary speed control module of fixed frequency air conditioner | |
| CN204574376U (en) | A kind of air-conditioner control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091223 Termination date: 20140123 |