CN103791561B - A kind of indoor apparatus of air conditioner - Google Patents
A kind of indoor apparatus of air conditioner Download PDFInfo
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- CN103791561B CN103791561B CN201410056575.5A CN201410056575A CN103791561B CN 103791561 B CN103791561 B CN 103791561B CN 201410056575 A CN201410056575 A CN 201410056575A CN 103791561 B CN103791561 B CN 103791561B
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Abstract
The invention discloses a kind of indoor apparatus of air conditioner, described evaporimeter is provided with the control system of described expansion valve and communicates the temperature monitoring system being connected, described temperature monitoring system has set in advance and has entered guard mode temperature value and duty temperature value, temperature monitoring system compares monitored refrigerant temperature value and predefined temperature value, described in being more than or equal to, the refrigerant temperature value of monitoring enters guard mode temperature value, described temperature monitoring system sends signal to the control system of described expansion valve, and described expansion valve cuts out; The refrigerant temperature value of monitoring is more than or equal to described duty temperature value, and described temperature monitoring system sends signal to the control system of described expansion valve, and described expansion valve is opened. So, by utilizing temperature monitoring system the refrigerant temperature of evaporimeter is monitored and sent corresponding control signal to the control system of expansion valve, to control the start and stop of expansion valve, can effectively carry out anti-frost protection to evaporimeter.
Description
Technical field
The present invention relates to refrigeration technology field, particularly relate to a kind of indoor apparatus of air conditioner.
Background technology
Split-type air conditioner is divided into indoor set and off-premises station, and wherein, indoor set comprises liquid pipe, evaporationThe relevant device compositions such as device.
In use, because evaporator fin is dirty, return air is bad, fan delivery is too low etc.Occur that evaporator temperature is too low, long-play can cause that evaporimeter freezes, indoor set water is full thereforeBarrier and leak, system returns the phenomenons such as liquid, finally can cause evaporimeter to damage.
The technology that prevents at present the heat exchanger bursting by freezing of indoor set is normally entered according to the pressure of refrigerantRow anti-frost protection, by utilizing monitoring system to carry out the monitoring of pressure, when actual force value reachesSet to monitoring system minimum pressure values time, compressor cuts out; When actual force valueWhile reaching the maximum pressure value that monitoring system sets, compressor is opened.
But refrigerant has under certain pressure to there being corresponding temperature, making of realityWith in process, due to the kind of refrigerant and the difference of the concrete service condition of refrigeration system, can causeRefrigerant is under identical pressure, and actual temperature does not conform to the temperature under perfect condition, passes throughThe pressure of monitoring refrigerant is determined its temperature, easily occurs error, and just affects refrigeration systemNormal use; Also be not easy to monitoring system to set minimum pressure values and maximum pressure value simultaneously, asFruit force value arranges the too high or too low normal use that all can affect refrigeration system.
Summary of the invention
The object of this invention is to provide a kind of indoor apparatus of air conditioner, be convenient to monitoring, can be effectively to steamingHair device is carried out anti-frost protection.
The invention provides a kind of indoor apparatus of air conditioner, comprise evaporimeter, blower fan and expansion valve, instituteStating evaporimeter is provided with the control system of described expansion valve and communicates the temperature monitoring system being connectedSystem, described temperature monitoring system has set in advance and has entered guard mode temperature value and dutyTemperature value, temperature monitoring system is by monitored refrigerant temperature value and predefined temperature valueCompare, described in the refrigerant temperature value of monitoring is more than or equal to, enter guard mode temperature value,Described temperature monitoring system sends signal to the control system of described expansion valve, described expansion valveClose; The refrigerant temperature value of monitoring is more than or equal to described duty temperature value, described inTemperature monitoring system sends signal to the control system of described expansion valve, and described expansion valve is opened.
Preferably, described temperature monitoring system also comprises time supervision system, described time supervisionSystem is for monitoring the duration of refrigerant temperature; What described temperature monitoring system set in advance entersEntering guard mode temperature value is 0 DEG C, and the predefined duration of time supervision system is 30 pointsClock, described expansion valve cuts out; What described temperature monitoring system set in advance enters duty temperatureDegree value is 8 DEG C, and described expansion valve is opened.
What preferably, described temperature monitoring system set in advance enters guard mode temperature value is-3DEG C, the predefined duration of time supervision system is 8 minutes, described expansion valve cuts out.
Preferably, described temperature monitoring system comprises evaporimeter middle part temperature monitoring system and evaporationDevice outlet temperature monitoring system, described evaporimeter middle part temperature monitoring system and/or described evaporimeterOutlet temperature monitoring system is sent signal to described expansion valve control system.
Preferably, described evaporimeter middle part monitoring system comprises the first temperature sensor, described theOne temperature sensor is arranged at the minimum point of described evaporimeter medium position; Described evaporator outletTemperature monitoring system comprises the second temperature sensor, described in described the second temperature sensor is arranged atThe general export position of evaporimeter.
Preferably, described indoor apparatus of air conditioner comprises at least two group operational systems, described at least two groupsOperational system is arranged in parallel, and is provided with evaporimeter, blower fan and expansion valve.
A kind of indoor apparatus of air conditioner provided by the present invention, comprises evaporimeter, blower fan and expansion valve,Evaporimeter is provided with the control system of expansion valve and communicates the temperature monitoring system being connected, temperatureMonitoring system has set in advance and has entered guard mode temperature value and duty temperature value, temperatureMonitoring system compares monitored refrigerant temperature value and predefined temperature value, instituteThe refrigerant temperature value of monitoring is more than or equal to and enters guard mode temperature value, temperature monitoring systemControl system to expansion valve is sent signal, and expansion valve cuts out; The refrigerant temperature value of monitoring is largeIn or equal duty temperature value, temperature monitoring system sends to the control system of expansion valveSignal, described expansion valve is opened. So, by utilizing cold to evaporimeter of temperature monitoring systemMatchmaker's temperature is monitored and is sent corresponding control signal to the control system of expansion valve, to controlThe start and stop of expansion valve. Due to refrigerant temperature detect agility and reliability high, can be effectively to evaporationDevice carries out anti-frost protection.
Brief description of the drawings
Fig. 1 is the structural representation of indoor apparatus of air conditioner in a kind of detailed description of the invention provided by the present inventionFigure;
Wherein, as in 1:
Evaporimeter 1, expansion valve 2, blower fan 3, the first temperature sensor 4, the second TEMPDevice 5, indoor environment temperature sensor 6.
Detailed description of the invention
Core of the present invention is to provide a kind of indoor apparatus of air conditioner, is convenient to monitoring, can be effectively to steamingHair device is carried out anti-frost protection.
In order to make those skilled in the art person understand better the present invention program, below in conjunction with accompanying drawingThe present invention is described in further detail with detailed description of the invention.
Please refer to Fig. 1, Fig. 1 is that in a kind of detailed description of the invention provided by the present invention, air-conditioning is indoorThe structural representation of machine.
In this detailed description of the invention, indoor apparatus of air conditioner comprises two operational systems, these two fortuneRow system is arranged in parallel, and these two operational systems include evaporimeter 1, blower fan 3 and expandValve 2, wherein, the evaporimeter 1 in each operational system is provided with the control system with expansion valveCommunicate the temperature monitoring system of connection, temperature monitoring system has set in advance and has entered guard modeTemperature value and duty temperature value, temperature monitoring system is by monitored refrigerant temperature valueCompare with predefined temperature value, described in the refrigerant temperature value of monitoring is more than or equal toEnter guard mode temperature value, temperature monitoring system sends signal to the control system of expansion valve,Expansion valve 2 cuts out; The refrigerant temperature value of monitoring is more than or equal to described duty temperature value,Temperature monitoring system sends signal to the control system of expansion valve, and expansion valve 2 is opened.
So, by utilizing temperature monitoring system to monitor also the refrigerant temperature of evaporimeter 1Send corresponding control signal to the control system of expansion valve, to control the start and stop of expansion valve 2.Due to refrigerant temperature detect agility and reliability high, can effectively carry out antifreeze guarantor to evaporimeter 1Protect.
It should be noted that, in this detailed description of the invention, be only provided with two and be arranged in parallelOperational system, certainly, does not get rid of the operational system that other quantity are set, as only arranged 1 yetOr three, four etc.
In this detailed description of the invention, also comprise time supervision system, by time supervision systemCan monitor the duration of refrigerant temperature, further to ensure expansion valve 2 accuracy of actions.What temperature monitoring system set in advance enters guard mode temperature value is 0 DEG C, time supervision systemThe predefined duration is 30 minutes, is less than when temperature monitoring system monitors refrigerant temperatureOr equal 0 DEG C, time supervision system monitoring to duration of this temperature for being more than or equal to 30Minute, temperature monitoring system sends signal to the control system of expansion valve, and expansion valve 2 cuts out,Blower fan 3 moves according to air supply pattern, and the energy of the operational system at this evaporimeter 1 place is neededAsk and pass to off-premises station, off-premises station reduces output according to the energy aggregate demand situation of all indoor setsOr out of service; What temperature monitoring system set in advance enters duty temperature value is 8 DEG C,When monitoring refrigerant temperature, temperature monitoring system is less than or equal to 8 DEG C, time supervision system monitoringTo duration of this temperature, for being more than or equal to 8 minutes, temperature monitoring system is to expansion valveControl system send signal, expansion valve 2 is opened, off-premises station is according to the energy of all indoor setsAggregate demand situation raises and exports or open operation. So, can further ensure evaporationDevice 1 carries out anti-freeze protection, avoids evaporimeter 1 to freeze and causes bursting by freezing.
In addition,, in order further to avoid evaporimeter 1 frosting, temperature monitoring system sets in advanceEntering guard mode temperature value can also be-3 DEG C, when temperature monitoring system monitors refrigerant temperatureBe less than or equal to-3 DEG C, time supervision system monitoring to duration of this temperature for be greater than or etc.In 8 minutes, temperature monitoring system sent signal to the control system of expansion valve, expansion valve 2Close.
It should be noted that, in this detailed description of the invention, temperature monitoring system is predefinedEnter guard mode temperature value, taking evaporimeter 1 frost-free as 1 boundary's point. ,
Also it should be noted that, in this detailed description of the invention, expansion valve 2 is electric expansion valve.
In addition, in order further to ensure the accuracy that temperature value is measured, in this detailed description of the inventionIn, also comprise evaporimeter middle part temperature monitoring system and evaporator outlet temperature monitoring system, itsIn, evaporimeter middle part temperature monitoring system comprises the first temperature sensor 4, the first TEMPsDevice 4 is arranged at the minimum point of evaporimeter medium position, in order to monitor evaporimeter 1 middle part temperatureMinimum temperature; Evaporator outlet temperature monitoring system comprises the second temperature sensor 5, the second temperatureDegree sensor 5 is arranged at the general export position of evaporimeter 1, exports for monitoring evaporimeter 1The refrigerant temperature of position.
So, when evaporimeter middle part temperature monitoring system and/or evaporator outlet temperature monitoring systemMonitoring refrigerant temperature reaches predefined and enters guard mode temperature or enter running status temperatureDegree, and the duration of this temperature reach the duration that time supervision system sets,Temperature monitoring system can send control signal to the control system of expansion valve, and expansion valve 2 is according to letterNumber stop or opening.
In further scheme, indoor apparatus of air conditioner also comprises indoor environment temperature sensor 6,Indoor environment temperature sensor 6 communicates and is connected with air-conditioner outdoor unit, so, and air-conditioner outdoor unitThe energy that can carry to indoor apparatus of air conditioner according to indoor environment temperature control, indoor to ensureThe stability of environment temperature and comfortableness.
Above a kind of indoor apparatus of air conditioner provided by the present invention is described in detail. HereinApply specific case principle of the present invention and embodiment have been set forth, above embodimentExplanation just for helping to understand method of the present invention and core concept thereof. It is right to it should be pointed out thatIn those skilled in the art, under the premise without departing from the principles of the invention,Can also carry out some improvement and modification to the present invention, these improvement and modification also fall into the present inventionIn the protection domain of claim.
Claims (6)
1. an indoor apparatus of air conditioner, comprises evaporimeter (1), blower fan (3) and expansion valve (2), its spyLevy and be, described evaporimeter (1) is provided with the control system of described expansion valve and communicates the temperature being connectedMonitoring system, described temperature monitoring system has set in advance and has entered guard mode temperature value and dutyTemperature value, temperature monitoring system compares monitored refrigerant temperature value and predefined temperature value, described in being more than or equal to, the refrigerant temperature value of monitoring enters guard mode temperature value, described temperatureMonitoring system is sent signal to the control system of described expansion valve, and described expansion valve (2) cuts out; Institute monitorsRefrigerant temperature value be more than or equal to described duty temperature value, described temperature monitoring system is to describedThe control system of expansion valve is sent signal, and described expansion valve (2) is opened.
2. indoor apparatus of air conditioner according to claim 1, is characterized in that, described temperature monitoring systemAlso comprise time supervision system, described time supervision system is for monitoring the duration of refrigerant temperature;
What described temperature monitoring system set in advance enters guard mode temperature value is 0 DEG C, time supervision systemThe predefined duration is 30 minutes, and described expansion valve (2) cuts out; Described temperature monitoring systemThe duty temperature value that enters setting in advance is 8 DEG C, and described expansion valve (2) is opened.
3. indoor apparatus of air conditioner according to claim 1, is characterized in that, described temperature monitoring systemAlso comprise time supervision system, described time supervision system is for monitoring the duration of refrigerant temperature;
What described temperature monitoring system set in advance enter guard mode temperature value is-3 DEG C, time supervision systemThe predefined duration is 8 minutes, and described expansion valve (2) cuts out.
4. according to the indoor apparatus of air conditioner described in arbitrary of claims 1 to 3, it is characterized in that described temperatureDegree monitoring system comprises evaporimeter middle part temperature monitoring system and evaporator outlet temperature monitoring system, described inEvaporimeter middle part temperature monitoring system and/or described evaporator outlet temperature monitoring system are to described expansion valveControl system is sent signal.
5. indoor apparatus of air conditioner according to claim 1, is characterized in that, described evaporimeter middle part prisonExamining system comprises the first temperature sensor (4), and described the first temperature sensor (4) is arranged at described evaporationThe minimum point of device (1) medium position; Described evaporator outlet temperature monitoring system comprises the second TEMPDevice (5), described the second temperature sensor (5) is arranged at the general export position of described evaporimeter (1).
6. indoor apparatus of air conditioner according to claim 1, is characterized in that, described indoor apparatus of air conditioner bagDraw together at least two group operational systems, operational system is arranged in parallel described at least two groups, and is provided with described steamingHair device (1), described blower fan (3) and described expansion valve (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410056575.5A CN103791561B (en) | 2014-02-19 | 2014-02-19 | A kind of indoor apparatus of air conditioner |
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| CN201410056575.5A CN103791561B (en) | 2014-02-19 | 2014-02-19 | A kind of indoor apparatus of air conditioner |
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| CN103791561A CN103791561A (en) | 2014-05-14 |
| CN103791561B true CN103791561B (en) | 2016-05-11 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106288205A (en) * | 2016-08-19 | 2017-01-04 | 芜湖美智空调设备有限公司 | Air-conditioner and control method thereof |
| CN106288544A (en) * | 2016-08-19 | 2017-01-04 | 芜湖美智空调设备有限公司 | Air-conditioner and control method thereof |
| CN110017542A (en) * | 2019-04-17 | 2019-07-16 | 广东美的制冷设备有限公司 | Air conditioner, anti-freeze control method and computer readable storage medium |
| CN111520797B (en) * | 2020-05-25 | 2021-07-27 | 广东志高暖通设备股份有限公司 | Floor heating multi-split air conditioner with anti-freezing monitoring function and anti-freezing control method thereof |
| CN113531773B (en) * | 2021-06-18 | 2022-11-15 | 宁波奥克斯电气股份有限公司 | Multi-connected air conditioner fault detection method and device and multi-connected air conditioner |
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| CN1098186A (en) * | 1993-03-29 | 1995-02-01 | 三洋电机株式会社 | The control device of air conditioner |
| CN1389675A (en) * | 2002-07-18 | 2003-01-08 | 上海交通大学 | Heat-comfortable fuzzily controlled air conditioner |
| WO2012052019A1 (en) * | 2010-10-20 | 2012-04-26 | Danfoss A/S | A method for controlling a supply of refrigerant to an evaporator |
| JP2013124800A (en) * | 2011-12-14 | 2013-06-24 | Panasonic Corp | Refrigerating cycle device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100484869B1 (en) * | 2003-01-13 | 2005-04-22 | 엘지전자 주식회사 | Driving control method for a heat pump system |
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2014
- 2014-02-19 CN CN201410056575.5A patent/CN103791561B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1098186A (en) * | 1993-03-29 | 1995-02-01 | 三洋电机株式会社 | The control device of air conditioner |
| CN1389675A (en) * | 2002-07-18 | 2003-01-08 | 上海交通大学 | Heat-comfortable fuzzily controlled air conditioner |
| WO2012052019A1 (en) * | 2010-10-20 | 2012-04-26 | Danfoss A/S | A method for controlling a supply of refrigerant to an evaporator |
| JP2013124800A (en) * | 2011-12-14 | 2013-06-24 | Panasonic Corp | Refrigerating cycle device |
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Address after: 528200 No. 1 compiled by the villagers' group of helangsha, Shengli village, Lishui Town, Nanhai District, Foshan City, Guangdong Province Patentee after: Guangdong Kaili HVAC Co.,Ltd. Address before: 528200 No. 1 compiled by the villagers' group of helangsha, Shengli village, Lishui Town, Nanhai District, Foshan City, Guangdong Province Patentee before: GUANGDONG CHIGO HEATING AND VENTILATION EQUIPMENT Co.,Ltd. |