CN103884059B - A kind of air cabinet of air conditioner and air conditioning system - Google Patents
A kind of air cabinet of air conditioner and air conditioning system Download PDFInfo
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- CN103884059B CN103884059B CN201410138508.8A CN201410138508A CN103884059B CN 103884059 B CN103884059 B CN 103884059B CN 201410138508 A CN201410138508 A CN 201410138508A CN 103884059 B CN103884059 B CN 103884059B
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Abstract
This application provides a kind of air cabinet of air conditioner and air conditioning system, air cabinet of air conditioner includes n catalyst, in air cabinet of air conditioner is properly functioning, when in the first thermal fuse and the first temperature detect switch (TDS) and pressure difference switch, any one disconnects, n catalyst disconnects, the respective main contacts of each catalyst all disconnects, and auxiliary contact disconnect and cut off main power source；Third party's regulator cubicle, when detecting that auxiliary contact disconnect, cuts off main power source by the catalyst of third party's regulator cubicle.Visible, when in the first thermal fuse and the first temperature detect switch (TDS) and described pressure difference switch, any one disconnects, catalyst in third party's regulator cubicle and the catalyst in air cabinet of air conditioner all can cut off main power source, avoid the accident sticking together or can not cutting off when mechanical reason contact is stuck main power source because of the main contacts of wherein one-level catalyst to occur, reduce danger coefficient.
Description
Technical field
The application relates to air conditioner electric heated protective design field, particularly to a kind of air cabinet of air conditioner and air conditioning system.
Background technology
In central air-conditioning and HVAC industry, adopt electrical heating very general as heat-producing device application.But also because electric heating equipment exists the unsafe factors such as caloric value big, hysteresis quality time length, charging operation, when electric heating control did not easily make electrothermal tube surface temperature gradually rise at that time, the generation of initiation fire accident.Therefore, the guarantee that electric heater frost protection is used safely as electrical heating, is very important ingredient in electric heating equipment.
At present in central air-conditioning industry, air conditioner electric heated protective is collectively constituted by the catalyst in high temperature protection in air cabinet of air conditioner and calm protection and third party's regulator cubicle, and high temperature protection and calm protection in air cabinet of air conditioner are concurrently accessed third party's regulator cubicle.Wherein, the power supply of third party's regulator cubicle closes through contacts of contactor and has disconnected the electrically heated power supply of air-conditioning or power-off, third party's regulator cubicle is when the high temperature protection detected in air cabinet of air conditioner or calm protection disconnect, catalyst can disconnect the power supply in third party's regulator cubicle, make the electrical heating power-off in air cabinet of air conditioner, but owing to air conditioner electric heated protective only existing one-level catalyst (i.e. catalyst in third party's regulator cubicle), therefore when high temperature adhesion occurs in catalyst or mechanical reason contact is stuck, air conditioner electric heating always electric, danger coefficient is high, the poor reliability that air conditioner electric heating uses.
Summary of the invention
For solving above-mentioned technical problem, the embodiment of the present application provides a kind of air cabinet of air conditioner and air conditioning system, to reduce danger coefficient, improves the purpose of the reliability that air conditioner electric heating uses, and technical scheme is as follows:
A kind of air cabinet of air conditioner; including the pressure difference switch for calm protection with for the first thermal fuse of electrical heating top high temperature protection, the first temperature detect switch (TDS), n catalyst, wherein; each catalyst all includes three main contacts, and three main contacts of each catalyst are the relation of linkage；N electrical heating group, wherein, each electrical heating group includes three groups of electric heating tubes, and described n is positive integer；
Described first thermal fuse, described first temperature detect switch (TDS), described pressure difference switch, n catalyst and single phasing protection power supply composition protection control circuit; wherein; one end of described pressure difference switch is connected with the live wire of described single phasing protection power supply; the other end passes sequentially through described first thermal fuse of series connection, described first temperature detect switch (TDS) is connected with the first common port of described n catalyst; second common port of described n catalyst is connected with the zero line of described single phasing protection power supply, and each catalyst is in parallel；
One auxiliary contact series connection of any one catalyst accesses described protection control circuit, and described auxiliary contact are connected with described first common port or are connected with described second common port, and described auxiliary contact are concurrently accessed third party's regulator cubicle；
Each main contacts of each catalyst each connects one group of electric heating tube, and each main contacts of each catalyst each connects the not isopen of main power source in third party's regulator cubicle, and each electrical heating group is connected with the zero line of described main power source；
In described air cabinet of air conditioner normal course of operation, if in described first thermal fuse and described first temperature detect switch (TDS) and described pressure difference switch, any one disconnects, then n catalyst disconnects, and the respective main contacts of each catalyst all disconnects, and described auxiliary contact disconnect and cut off described main power source；And described third party's regulator cubicle is when detecting that described auxiliary contact disconnect, cut off described main power source by the catalyst of described third party's regulator cubicle.
Preferably, also including: for the second thermal fuse and second temperature detect switch (TDS) of electrical heating air outlet high temperature protection, wherein, described first thermal fuse is connected with described second common port with described second temperature detect switch (TDS) by the second thermal fuse being sequentially connected in series；
When in described first thermal fuse, described first temperature detect switch (TDS), described pressure difference switch, described second thermal fuse and described second temperature detect switch (TDS), any one disconnects, n catalyst disconnects, the respective main contacts of each catalyst all disconnects, and described auxiliary contact disconnect and cut off described main power source；And described third party's regulator cubicle is when detecting that described auxiliary contact disconnect, cut off described main power source by the catalyst of described third party's regulator cubicle.
Preferably; also include: n+1 terminal block; one of them terminal block is applied to described protection and controls loop and described auxiliary contact, and each terminal block in all the other n terminal block is respectively applied to different electrical heating groups, connects the main power source that the main contacts of different catalyst is corresponding with described main contacts.
Preferably, described single phasing protection power supply includes 220V single phasing protection power supply.
Preferably, described first thermal fuse disconnects when 90 DEG C, and described first temperature detect switch (TDS) disconnects when 75 DEG C, and the second thermal fuse disconnects when 72 DEG C, and the second temperature detect switch (TDS) disconnects when 65 DEG C.
Preferably, described first temperature detect switch (TDS) and the second temperature detect switch (TDS) are bimetallic temperature detect switch (TDS).
A kind of air conditioning system, including the air cabinet of air conditioner as described in above-mentioned any one and third party's regulator cubicle, described third party's regulator cubicle includes n catalyst and main power source, and each catalyst includes three main contacts；
Wherein, a catalyst in each catalyst of described air cabinet of air conditioner corresponding described third party's regulator cubicle respectively, and two respective main contacts of catalyst connect one by one one to one, each main contacts of described third party's regulator cubicle each connects the not isopen of described main power source；
The zero line of described main power source connects each electrical heating group in described air cabinet of air conditioner.
Preferably, also including: n air switch, each air switch distinguishes a catalyst in corresponding described third party's regulator cubicle and connection corresponding to the main contacts of corresponding catalyst.
Compared with prior art, the having the beneficial effect that of the application
In this application, in air cabinet of air conditioner is properly functioning, when in the first thermal fuse and the first temperature detect switch (TDS) and pressure difference switch, any one disconnects, n catalyst disconnects, and the respective main contacts of each catalyst all disconnects, and auxiliary contact disconnect and cut off main power source；Third party's regulator cubicle, when detecting that auxiliary contact disconnect, cuts off main power source by the catalyst of third party's regulator cubicle.Visible, when in the first thermal fuse and the first temperature detect switch (TDS) and described pressure difference switch, any one disconnects, catalyst in third party's regulator cubicle and the catalyst in air cabinet of air conditioner all can cut off main power source, avoid the accident sticking together or can not cutting off when mechanical reason contact is stuck main power source because of the main contacts of wherein one-level catalyst to occur, reduce danger coefficient, improve the reliability that air conditioner electric heating uses.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in the embodiment of the present application, below the accompanying drawing used required during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the application, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the one protection control principle schematic diagram of the air cabinet of air conditioner that the application provides；
Fig. 2 is the another kind protection control principle schematic diagram of the air cabinet of air conditioner that the application provides；
Fig. 3 is another the protection control principle schematic diagram of the air cabinet of air conditioner that the application provides；
Fig. 4 is another the protection control principle schematic diagram of the air cabinet of air conditioner that the application provides；
Fig. 5 is the one protection control principle schematic diagram of the air conditioning system that the application provides；
Fig. 6 is the another kind protection control principle schematic diagram of the air conditioning system that the application provides；
Fig. 7 is another the protection control principle schematic diagram of the air conditioning system that the application provides.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described embodiment is only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of the application protection.
Embodiment one
The present embodiment provides a kind of air cabinet of air conditioner, refers to Fig. 1 to Fig. 4.Air cabinet of air conditioner, including the first thermal fuse F1, the first temperature detect switch (TDS) TH1 and pressure difference switch DPS, a n catalyst, respectively KM1, KM2 ..., KMn, wherein, each catalyst all includes three main contacts, and three main contacts of each catalyst are the relation of linkage；N electrical heating group, wherein, each electrical heating group includes three groups of electric heating tubes, and described n is positive integer；It is positive integer that the auxiliary contact of any one catalyst in n catalyst respective main contacts respectively KM1 ＇, KM2 ＇ ..., KMn ＇, a n catalyst are expressed as KMn, described n.
Described first thermal fuse F1 and the first temperature detect switch (TDS) TH1 is used for electrical heating top high temperature protection.First thermal fuse F1 and the first temperature detect switch (TDS) TH1 is mainly for time calm, and electric heating energising runs, and heat assembles top, and temperature gradually rises, and cuts off main power source, the purpose of high temperature protection when reaching calm after arriving setting value.
Pressure difference switch DPS, for calm protection.
Described first thermal fuse F1, described first temperature detect switch (TDS) TH1, described pressure difference switch DPS, n catalyst KM1, KM2, ..., KMn and single phasing protection power supply composition protection control circuit, wherein, one end of described pressure difference switch DPS is connected with the live wire of described single phasing protection power supply, the other end passes sequentially through the described first thermal fuse F1 of series connection, described first temperature detect switch (TDS) TH1 and described n catalyst KM1, KM2, ..., the first common port G1 of KMn is connected, described n catalyst KM1, KM2, ..., the second common port G2 of KMn is connected with the zero line of described single phasing protection power supply, each catalyst is in parallel.
One auxiliary contact KMn series connection of any one catalyst accesses described protection control circuit, and described auxiliary contact KMn is connected with described first common port G1 or is connected with described second common port G2, and described auxiliary contact are concurrently accessed third party's regulator cubicle.Such as, auxiliary contact can be the auxiliary contact of catalyst KM1, is expressed as KM1, as shown in Figure 2.
Each main contacts of each catalyst each connects one group of electric heating tube, and each main contacts of each catalyst each connects the not isopen of main power source in third party's regulator cubicle, and each electrical heating group is connected with the zero line of described main power source.Concrete, each electric heating tube in electrical heating group 1 each connects a main contacts KM1 ＇, and each electric heating tube in electrical heating group 2 each connects a main contacts KM2 ＇ ..., each electric heating tube in electrical heating group n each connects a main contacts KMn ＇.
In described air cabinet of air conditioner normal course of operation, if any one disconnects in described first thermal fuse F1 and described first temperature detect switch (TDS) TH1 and described pressure difference switch DPS, then n catalyst disconnects, the respective main contacts of each catalyst all disconnects, and described auxiliary contact KMn disconnects and cuts off described main power source, and described third party's regulator cubicle is when detecting that described auxiliary contact KMn disconnects, cut off described main power source by the catalyst of described third party's regulator cubicle.
In the present embodiment, owing to auxiliary contact access third party's regulator cubicle, therefore auxiliary contact are when disconnecting, and third party's regulator cubicle can detect that auxiliary contact are already off, when detecting that auxiliary contact disconnect, the catalyst of third party's regulator cubicle performs to cut off the action of main power source.
In this application, in air cabinet of air conditioner is properly functioning, when in the first thermal fuse and the first temperature detect switch (TDS) and pressure difference switch, any one disconnects, n catalyst disconnects, and the respective main contacts of each catalyst all disconnects, and auxiliary contact disconnect and cut off main power source；Third party's regulator cubicle, when detecting that auxiliary contact disconnect, cuts off main power source by the catalyst of third party's regulator cubicle.Visible, when in the first thermal fuse and the first temperature detect switch (TDS) and described pressure difference switch, any one disconnects, catalyst in third party's regulator cubicle and the catalyst in air cabinet of air conditioner all can cut off main power source, avoid the accident sticking together or can not cutting off when mechanical reason contact is stuck main power source because of the main contacts of wherein one-level catalyst to occur, reduce danger coefficient, improve the reliability that air conditioner electric heating uses, reduce the probability of happening of fire and casualty accident.
Refer to Fig. 3; protection in the air cabinet of air conditioner shown in Fig. 1 controls to add the second thermal fuse F2 and the second temperature detect switch (TDS) TH2 for electrical heating air outlet high temperature protection in loop, and concrete annexation is that the first thermal fuse F1 is connected with described second common port G2 with described second temperature detect switch (TDS) TH2 by the second thermal fuse F2 being sequentially connected in series.
In the air cabinet of air conditioner shown in Fig. 3, when in described first thermal fuse F1, described first temperature detect switch (TDS) TH1, described pressure difference switch DPS, described second thermal fuse F2 and described second temperature detect switch (TDS) TH2, any one disconnects, n catalyst disconnects, the respective main contacts of each catalyst all disconnects, and described auxiliary contact disconnect and cut off main power source；And described third party's regulator cubicle is when detecting that described auxiliary contact disconnect, cut off described main power source by the catalyst of described third party's regulator cubicle.
In the present embodiment, high temperature protection the second thermal fuse F2 of increase and described second temperature detect switch (TDS) cost are low but improve security performance, are positioned over fan outlet, detect wind pushing temperature.When filter screen dirtying is stifled or the too low air quantity of fan frequency conversion electric machine frequency diminishes, wind pushing temperature raises.When temperature is higher than protection setting value, (this setting value is lower than top high temperature protection setting value) cuts off main power source, it is to avoid the injury of the too high damage to airduct equipment of wind pushing temperature and blow-through human body.
Refer to Fig. 4; air cabinet of air conditioner basis shown in Fig. 1 adds n+1 terminal block; respectively TB1, TB2, TB3 ..., TBn+1; one of them terminal block TB1 is applied to described protection and controls loop and described auxiliary contact; each terminal block in all the other n terminal block is respectively applied to different electrical heating groups, connects the main power source that the main contacts of different catalyst is corresponding with described main contacts.
After increasing terminal block, the installation of circuit, dismounting and maintenance are convenient.
A, B, L, N on terminal block TB1 is label, and R, S, T, the N on terminal block TB2 TBn+1 is label.Can mounting terminal row on label carry out wiring.
In the present embodiment, single phasing protection power supply is specifically as follows 220V single phasing protection power supply.
In the present embodiment, the first thermal fuse F1 disconnects when 90 DEG C, and described first temperature detect switch (TDS) TH1 disconnects when 75 DEG C, and described second thermal fuse F2 disconnects when 72 DEG C, and described second temperature detect switch (TDS) TH2 disconnects when 65 DEG C.
Preferably, the first temperature detect switch (TDS) TH1 and the second temperature detect switch (TDS) TH2 is bimetallic temperature detect switch (TDS).
Dotted line shown in Fig. 1 to Fig. 4 involved by the present embodiment is field connection, and solid line is factory's wiring.
Embodiment two
The present embodiment provides a kind of air conditioning system, refers to Fig. 5 to Fig. 7, and air conditioning system includes: air cabinet of air conditioner in embodiment one and third party's regulator cubicle.
In the present embodiment, third party's regulator cubicle includes n catalyst and main power source, and the electrical heating group that main power source is in air cabinet of air conditioner is powered.Each catalyst in third party's regulator cubicle includes three contacts.
As it is shown in figure 5, n catalyst respectively KM11 in third party's regulator cubicle, KM21 ..., KMn1, the first phase line L1 of main power source in third party's regulator cubicle, the second phase line L2 of main power source, the third phase line L3 of main power source, the zero line N of main power source.
In air conditioning system shown in Fig. 5, the electrical heating group in air cabinet of air conditioner connects ground wire.
Referring to Fig. 6, it is illustrated that the air cabinet of air conditioner containing terminal block and third party's regulator cubicle.
Refer to Fig. 7, air conditioning system shown in Fig. 7 adds n air switch on the basis of Fig. 6, respectively Q1, Q2 ..., Qn, a catalyst in each air switch respectively corresponding described third party's regulator cubicle and connection corresponding to the main contacts of corresponding catalyst.Concrete annexation is as shown in Figure 7.
Dotted line shown in Fig. 5 to Fig. 7 involved by the present embodiment is field connection, and solid line is factory's wiring.
It should be noted that each embodiment in this specification all adopts the mode gone forward one by one to describe, what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually referring to.For device class embodiment, due to itself and embodiment of the method basic simlarity, so what describe is fairly simple, relevant part illustrates referring to the part of embodiment of the method.
Finally, it can further be stated that, in this article, the relational terms of such as first and second or the like is used merely to separate an entity or operation with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include the process of a series of key element, method, article or equipment not only include those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this process, method, article or equipment.When there is no more restriction, statement " including ... " key element limited, it is not excluded that there is also other identical element in including the process of described key element, method, article or equipment.
Above a kind of air cabinet of air conditioner provided herein and air conditioning system are described in detail, principle and the embodiment of the application are set forth by specific case used herein, and the explanation of above example is only intended to help and understands the present processes and core concept thereof；Simultaneously for one of ordinary skill in the art, according to the thought of the application, all will change in specific embodiments and applications, in sum, this specification content should not be construed as the restriction to the application.
Claims (8)
1. an air cabinet of air conditioner; including the pressure difference switch for calm protection with for the first thermal fuse of electrical heating top high temperature protection, the first temperature detect switch (TDS); it is characterized in that; including: n catalyst; wherein; each catalyst all includes three main contacts, and three main contacts of each catalyst are the relation of linkage；N electrical heating group, wherein, each electrical heating group includes three groups of electric heating tubes, and described n is positive integer；
Described first thermal fuse, described first temperature detect switch (TDS), described pressure difference switch, n catalyst and single phasing protection power supply composition protection control circuit; wherein; one end of described pressure difference switch is connected with the live wire of described single phasing protection power supply; the other end passes sequentially through described first thermal fuse of series connection, described first temperature detect switch (TDS) is connected with the first common port of described n catalyst; second common port of described n catalyst is connected with the zero line of described single phasing protection power supply, and each catalyst is in parallel；
One auxiliary contact series connection of any one catalyst accesses described protection control circuit, and described auxiliary contact are connected with described first common port or are connected with described second common port, and described auxiliary contact are concurrently accessed third party's regulator cubicle；
Each main contacts of each catalyst each connects one group of electric heating tube, and each main contacts of each catalyst each connects the not isopen of main power source in third party's regulator cubicle, and each electrical heating group is connected with the zero line of described main power source；
In described air cabinet of air conditioner normal course of operation, if in described first thermal fuse and described first temperature detect switch (TDS) and described pressure difference switch, any one disconnects, then n catalyst disconnects, and the respective main contacts of each catalyst all disconnects, and described auxiliary contact disconnect and cut off described main power source；And described third party's regulator cubicle is when detecting that described auxiliary contact disconnect, cut off described main power source by the catalyst of described third party's regulator cubicle.
2. air cabinet of air conditioner according to claim 1; it is characterized in that; also include: for the second thermal fuse and second temperature detect switch (TDS) of electrical heating air outlet high temperature protection; wherein, described first thermal fuse is connected with described second common port with described second temperature detect switch (TDS) by the second thermal fuse being sequentially connected in series；
When in described first thermal fuse, described first temperature detect switch (TDS), described pressure difference switch, described second thermal fuse and described second temperature detect switch (TDS), any one disconnects, n catalyst disconnects, the respective main contacts of each catalyst all disconnects, and described auxiliary contact disconnect and cut off described main power source；And described third party's regulator cubicle is when detecting that described auxiliary contact disconnect, cut off described main power source by the catalyst of described third party's regulator cubicle.
3. air cabinet of air conditioner according to claim 1; it is characterized in that; also include: n+1 terminal block; one of them terminal block is applied to described protection and controls loop and described auxiliary contact; each terminal block in all the other n terminal block is respectively applied to different electrical heating groups, connects the main power source that the main contacts of different catalyst is corresponding with described main contacts.
4. the air cabinet of air conditioner according to claim 1-3 any one, it is characterised in that described single phasing protection power supply includes 220V single phasing protection power supply.
5. the air cabinet of air conditioner according to claim 1-3 any one, it is characterised in that described first thermal fuse disconnects when 90 DEG C, described first temperature detect switch (TDS) disconnects when 75 DEG C, and the second thermal fuse disconnects when 72 DEG C, and the second temperature detect switch (TDS) disconnects when 65 DEG C.
6. the air cabinet of air conditioner according to claim 1-3 any one, it is characterised in that described first temperature detect switch (TDS) and the second temperature detect switch (TDS) are bimetallic temperature detect switch (TDS).
7. an air conditioning system, it is characterised in that including the air cabinet of air conditioner as described in claim 1-6 any one and third party's regulator cubicle, described third party's regulator cubicle includes n catalyst and main power source, and each catalyst includes three main contacts；
Wherein, a catalyst in each catalyst of described air cabinet of air conditioner corresponding described third party's regulator cubicle respectively, and two respective main contacts of catalyst connect one by one one to one, each main contacts of described third party's regulator cubicle each connects the not isopen of described main power source；
The zero line of described main power source connects each electrical heating group in described air cabinet of air conditioner.
8. air conditioning system according to claim 7, it is characterised in that also include: n air switch, each air switch distinguishes a catalyst in corresponding described third party's regulator cubicle and connection corresponding to the main contacts of corresponding catalyst.
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| CN201410138508.8A CN103884059B (en) | 2014-04-08 | 2014-04-08 | A kind of air cabinet of air conditioner and air conditioning system |
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| CN201410138508.8A CN103884059B (en) | 2014-04-08 | 2014-04-08 | A kind of air cabinet of air conditioner and air conditioning system |
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| CN106427475A (en) * | 2016-11-24 | 2017-02-22 | 郑州比克新能源汽车有限公司 | Device and method for double protection of PTC (Positive Temperature Coefficient) heater of electric vehicle |
| CN109548352A (en) * | 2018-12-18 | 2019-03-29 | 广东优世联合控股集团股份有限公司 | Server cabinet and physical isolation method for same |
| CN110531642A (en) * | 2019-08-20 | 2019-12-03 | 河南中烟工业有限责任公司 | A kind of safe power-off system of tobacco cutting equipment |
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| CN201819703U (en) * | 2010-10-15 | 2011-05-04 | 上海理工大学 | Laboratory for large-scale air conditioners |
| CN202204106U (en) * | 2011-08-10 | 2012-04-25 | 深圳市紫衡技术有限公司 | Intelligent control cabinet for air cabinet of air conditioner |
| JP2012225640A (en) * | 2012-07-12 | 2012-11-15 | Toshiba Corp | Air-conditioning control system and air-conditioning controller used therein |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6950606B2 (en) * | 2004-01-05 | 2005-09-27 | Advanced Distributor Products Llc | Air conditioning apparatus with blower and electric heater in common housing |
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|---|---|---|---|---|
| CN2758732Y (en) * | 2004-12-23 | 2006-02-15 | 安徽建筑工业学院 | Experiment development platform for heating and ventilation conditioner |
| CN201819703U (en) * | 2010-10-15 | 2011-05-04 | 上海理工大学 | Laboratory for large-scale air conditioners |
| CN202204106U (en) * | 2011-08-10 | 2012-04-25 | 深圳市紫衡技术有限公司 | Intelligent control cabinet for air cabinet of air conditioner |
| JP2012225640A (en) * | 2012-07-12 | 2012-11-15 | Toshiba Corp | Air-conditioning control system and air-conditioning controller used therein |
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