CN106642509A - Control method for preventing heat exchanger in indoor unit of radiation type air conditioner from being frosted - Google Patents
Control method for preventing heat exchanger in indoor unit of radiation type air conditioner from being frosted Download PDFInfo
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- CN106642509A CN106642509A CN201510728890.2A CN201510728890A CN106642509A CN 106642509 A CN106642509 A CN 106642509A CN 201510728890 A CN201510728890 A CN 201510728890A CN 106642509 A CN106642509 A CN 106642509A
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- temperature
- heat exchanger
- value
- control method
- surface temperature
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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
- 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
- F24F11/41—Defrosting; Preventing freezing
- F24F11/43—Defrosting; Preventing freezing of indoor units
-
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
Abstract
The invention relates to a control method for preventing a heat exchanger in an indoor unit of a radiation type air conditioner from being frosted. The control method comprises the steps: a, keeping the operating frequency of a compressor invariable; b, detecting the surface temperature of the heat exchanger of the indoor unit of the radiation type air conditioner in real time; and c, adjusting the openness of an electronic expansion valve in the radiation type air conditioner in real time according to the detection result, wherein the surface temperature of the heat exchanger is constantly higher than the ice point temperature. According to the control method, the operating frequency of the compressor is kept stable, so that the temperature of indoor air is not affected; on the premise that the compressor operates in the stable frequency, the surface temperature of the heat exchanger in the indoor unit is adjusted by changing the openness of an electronic expansion valve. Experimental detection verifies that with adoption of the method, the surface temperature of the heat exchanger is constantly higher than the ice point temperature, so that the phenomenon that the heat exchanger in the indoor unit is frosted is effectively prevented, the heat exchanger is better prevented from being damaged, the service life of the indoor unit is prolonged, and the applicability is better.
Description
Technical field
The invention belongs in radiant air conditioning technical field, more particularly to a kind of prevention radiant air conditioning room
The control method of heat exchanger frosting in machine.
Background technology
Air-conditioning is easily caused in indoor set during cooling in summer, when cryogenic temperature is too low and exchanged heat
The phenomenon that device frosting freezes, causes the damage of heat exchanger.Common air-conditioning evaporator area it is less and concentrate,
Heat exchanger evaporating temperature is more homogeneous under fan effect, by detecting that coil temperature adjusts compressor frequency
The lifting of rate, you can reach the purpose for preventing heat exchanger frosting from freezing；But this control mode is only suitable for
The traditional air conditioner of running frequency wider range；For radiant air conditioning is not appropriate for, mainly due to spoke
Penetrating in formula air-conditioning will not arrange big fan, heat exchange area, flat pipes of heat exchanger temperature heterogeneity, operation frequency
Rate is relatively low, and compressor frequency lifting by a small margin may result in the larger fluctuation of indoor temperature, so,
It is traditional by change the frequency of compressor so as to the method for realizing preventing heat exchanger frosting cannot realize it is pre-
The purpose of heat exchanger frosting in radiation proof formula indoor apparatus of air conditioner.
So, cannot be prevented in radiant air conditioning room using the method for prevention air-conditioning heat exchanger frosting at present
There is the phenomenon of frosting in heat exchanger in machine.
The content of the invention
In view of this, it is an object of the invention to propose to be changed in a kind of prevention radiant air conditioning indoor set
The control method of hot device frosting, cannot prevent in the method for solving existing prevention air-conditioning heat exchanger frosting
There is the problem of the phenomenon of frosting in heat exchanger in radiant air conditioning indoor set.In order to the embodiment for disclosing
Some aspects have a basic understanding, shown below is simple summary.The summarized section is not
Extensive overview, nor to determine key/critical component or describe the protection model of these embodiments
Enclose.Its sole purpose is that some concepts are presented with simple form, in this, as following detailed description
Preamble.
In some optional embodiments, the control method includes：A, holding compressor operating frequency are not
Become；The surface temperature of the heat exchanger of indoor set in b, real-time detection radiant air conditioning；C, according to detection
As a result in radiant air conditioning described in real-time adjustment electric expansion valve aperture so that the table of the heat exchanger
Face temperature constant is higher than freezing point temperature.
Further, step b is specifically included：Temperature sensor is set in the bottom of the heat exchanger, is adopted
With the surface temperature of heat exchanger described in the temperature sensor real-time detection.
Further, temperature sensor is set in the bottom of the heat exchanger, using the temperature sensor
The process of the surface temperature of heat exchanger described in real-time detection is specifically included：Set in the bottom of the heat exchanger
Put at least two temperature sensors；Each described temperature sensor is in real time to the surface of the heat exchanger
Temperature is detected；The minimum temperature value in the detected value is selected in real time, by the minimum temperature value
As the value of the surface temperature of the heat exchanger.
Further, the process for arranging at least two temperature sensors in the bottom of the heat exchanger includes：
Arrange apart from the position of flat heat exchange pipe 12cm～18cm above the lower header of the bottom of the heat exchanger
At least two temperature sensors.
Further, electronic expansion in the radiant air conditioning according to testing result real-time adjustment in step c
The process of the aperture of valve at least includes one of the following：When the value for detecting the surface temperature is more than freezing point
It is described with default first adjustment amplitude increase when temperature but the first temperature value less than or equal to systemic presupposition
The aperture of electric expansion valve；When the value for detecting the surface temperature is more than first temperature value, but
Less than or equal to systemic presupposition second temperature value when, keep the aperture of the electric expansion valve constant；When
The value of the surface temperature is detected more than the second temperature value, but less than or equal to the of systemic presupposition
During three temperature values, to preset the aperture that the second adjustment amplitude reduces the electric expansion valve；When detecting
The value of the surface temperature is more than the 4th temperature value of systemic presupposition, but less than or equal to freezing point temperature, and
And when detecting the temperature value of at least one temperature sensor more than freezing point temperature, with default 3rd adjustment
Amplitude increases the aperture of the electric expansion valve.
Wherein, the value of the first adjustment amplitude and the second adjustment amplitude is：1B/5s～3B/5s；3rd
The value of adjustment amplitude is 3B/s～6B/s.
In some optional embodiments, the control method also included before step a：D, compressor
Room air is dehumidified after startup optimization, the humidity of room air is adjusted into the wet of systemic presupposition
After degree, compressor is with ongoing frequency operation.
In some optional embodiments, the control method also includes：E, pass when detecting all temperature
When the temperature value of sensor is respectively less than freezing point temperature and duration and exceedes the safe duration of systemic presupposition, pressure
Contracting machine shuts down；F, continue to detect the surface temperature of the heat exchanger, when detecting the heat exchanger
Surface temperature more than the 3rd temperature value and during compressor shutdown more than systemic presupposition out of service
When long, compressor resumes operation and execution step d again.
Wherein, a length of 1～3 minute when safe；A length of 2～4 minutes during shutdown.
Compared with prior art, beneficial effects of the present invention are：
The present invention provides a kind of control method of heat exchanger frosting in prevention radiant air conditioning indoor set, should
The running frequency of compressor keeps stable in control method, and the temperature of room air will not be impacted,
On the premise of compressor keeps stable frequency to run, realized by changing the aperture of electric expansion valve
Regulation to the surface temperature of heat exchanger in indoor set, is learnt by testing detection, can using the method
So that the surface temperature of the heat exchanger is constant higher than freezing point temperature, effectively prevents in indoor set and change
There is the phenomenon of frosting in hot device, heat exchanger is avoided well and is damaged, and extends making for indoor set
With the life-span, applicability is more preferable.
For above-mentioned and related purpose, one or more embodiments include will be explained in below simultaneously
The feature being particularly pointed out in the claims.It is exemplary that description below and accompanying drawing describe some in detail
In aspect, and the only utilizable various modes of principle of each embodiment of its instruction one
A little modes.Other benefits and novel features will be considered in conjunction with the accompanying with detailed description below and
Become obvious, the disclosed embodiments are to include all these aspects and their equivalent.
Description of the drawings
Fig. 1 be the embodiment of the present invention prevention radiant air conditioning indoor set in heat exchanger frosting controlling party
The schematic flow sheet of method；
Fig. 2 be the embodiment of the present invention prevention radiant air conditioning indoor set in heat exchanger frosting controlling party
The schematic flow sheet of method；
Fig. 3 be the embodiment of the present invention prevention radiant air conditioning indoor set in heat exchanger frosting controlling party
The schematic flow sheet of method.
Specific embodiment
The following description and drawings fully show specific embodiments of the present invention, so that the skill of this area
Art personnel can put into practice them.Embodiment only represents possible change.Unless explicitly requested, otherwise singly
Only components and functionality is optional, and the order for operating can change.The portion of some embodiments
Dividing can be included in or replace part and the feature of other embodiments with feature.The enforcement of the present invention
The gamut of the scope of scheme including claims, and claims is all obtainable
Equivalent.Herein, these embodiments of the invention individually or generally can be used term " to send out
It is bright " representing, this just for the sake of convenient, and if in fact disclosing the invention more than,
The scope for being not meant to automatically limit the application is any single invention or inventive concept.
Before specifically embodiments of the invention are introduced, first an explanation is done to some dialects in text.
Herein, the safe duration of systemic presupposition refers to default in air-conditioner control system with regard to Fault Control
A duration value, when the temperature value that all of temperature sensor in system is detected is respectively less than freezing point temperature
When spending, illustrate that air-conditioning system breaks down, after failure occurs, compressor continues to run with duration once surpassing
When crossing the default duration value, air-conditioning equipment itself can be damaged, therefore, by the default duration
It is named as safe duration.It is also to default in air-conditioner control system with regard to controlling compressor fortune to shut down duration
One duration value of row state, after press startup optimization, after there is state out of service, can be in Jing
Cross and restarting operation after the duration value identical time period, therefore when the duration is named as into shutdown
It is long.
Illustrate presently in connection with accompanying drawing, Fig. 1 is illustrated that pre- radiation proof in some optional embodiments
The flow chart of the control method of heat exchanger frosting in formula indoor apparatus of air conditioner；Fig. 2 is illustrated that some are optional
Embodiment in prevent radiant air conditioning indoor set in heat exchanger frosting control method flow chart；Fig. 3
It is illustrated that in some optional embodiments and prevents the control of heat exchanger frosting in radiant air conditioning indoor set
The flow chart of method.
As shown in figure 1, in some optional embodiments, disclosing a kind of prevention radiant air conditioning room
The control method of heat exchanger frosting in interior machine, the control method includes：
A, holding compressor operating frequency are constant；
The surface temperature of the heat exchanger of indoor set in b, real-time detection radiant air conditioning；
Further, step b is specifically included：Temperature sensor is set in the bottom of the heat exchanger, is adopted
With the surface temperature of heat exchanger described in the temperature sensor real-time detection.
Further, temperature sensor is set in the bottom of the heat exchanger, using the temperature sensor
The process of the surface temperature of heat exchanger described in real-time detection is specifically included：Set in the bottom of the heat exchanger
Put at least two temperature sensors；Each described temperature sensor is in real time to the surface of the heat exchanger
Temperature is detected；The minimum temperature value in the detected value is selected in real time, by the minimum temperature value
As the value of the surface temperature of the heat exchanger.
Further, the process for arranging at least two temperature sensors in the bottom of the heat exchanger includes：
Arrange apart from the position of flat heat exchange pipe 12cm～18cm above the lower header of the bottom of the heat exchanger
At least two temperature sensors, wherein, it is preferably arranged to：All temperature sensors are arranged at into next part
Flow tube top selects this kind of design cold mainly due to interior apart from the position of flat heat exchange pipe 15cm
Air generally accumulates in indoor position on the lower, temperature sensor is arranged at into exchanger base and more can
The surface temperature of heat exchanger and the difference in size of freezing point temperature are enough accurately judged to, adjustment afterwards is controlled
Can be more accurate.
The aperture of electric expansion valve in c, the radiant air conditioning according to testing result real-time adjustment so that
The surface temperature of the heat exchanger is constant higher than freezing point temperature.
Further, electronic expansion in the radiant air conditioning according to testing result real-time adjustment in step c
The process of the aperture of valve at least includes one of the following：
When the value for detecting the surface temperature is more than freezing point temperature but less than or equal to the first of systemic presupposition
During temperature value, to preset the aperture that the first adjustment amplitude increases the electric expansion valve；
It is when the value for detecting the surface temperature is more than first temperature value but pre- less than or equal to system
If second temperature value when, keep the aperture of the electric expansion valve constant；
It is when the value for detecting the surface temperature is more than the second temperature value but pre- less than or equal to system
If three temperature values when, to preset the aperture that the second adjustment amplitude reduces the electric expansion valve；
When the value for detecting the surface temperature is more than the 4th temperature value of systemic presupposition, but it is less than or equal to
Freezing point temperature, and when detecting the temperature value of at least one temperature sensor more than freezing point temperature, with
Default 3rd adjustment amplitude increases the aperture of the electric expansion valve.
Wherein, the value of the first adjustment amplitude and the second adjustment amplitude is：1B/5s～3B/5s, preferably
, the value of the first adjustment amplitude and the second adjustment amplitude is disposed as into 2B/5s, when being embodied as, use
Family can arbitrarily arrange according to demand the value of the first adjustment amplitude and the second adjustment amplitude；3rd adjustment width
The value of degree is 3B/s～6B/s, it is preferred that the value of the 3rd adjustment amplitude is set into 5B/s, equally,
User can arbitrarily arrange according to demand the value of the 3rd adjustment amplitude.
Preferably, the first temperature value is set into 1 DEG C, second temperature value is set into 2 DEG C, by the 3rd
Temperature value is set to 4 DEG C, and the 4th temperature value is set into -1 DEG C, and equally, user can voluntarily be arranged
State first, second, third and fourth temperature value.
The running frequency of compressor keeps stable in the control method, and the temperature of room air will not be made
Into impact, on the premise of compressor keeps stable frequency to run, by changing opening for electric expansion valve
Degree realizes the regulation to the surface temperature of heat exchanger in indoor set, is learnt by testing detection, adopts
The method can make the surface temperature of the heat exchanger constant higher than freezing point temperature, effectively prevent room
There is the phenomenon of frosting in heat exchanger in interior machine, heat exchanger is avoided well and is damaged, and extends room
The service life of interior machine, applicability is more preferable.
As shown in Fig. 2 in some optional embodiments, disclosing a kind of prevention radiant air conditioning room
The control method of heat exchanger frosting in interior machine, the control method includes：
Room air is dehumidified after d, compressor start operation, the humidity of room air is adjusted to
After the humidity of systemic presupposition, compressor is with ongoing frequency operation.
A, holding compressor operating frequency are constant；
The surface temperature of the heat exchanger of indoor set in b, real-time detection radiant air conditioning；
Further, step b is specifically included：Temperature sensor is set in the bottom of the heat exchanger, is adopted
With the surface temperature of heat exchanger described in the temperature sensor real-time detection.
Further, temperature sensor is set in the bottom of the heat exchanger, using the temperature sensor
The process of the surface temperature of heat exchanger described in real-time detection is specifically included：Set in the bottom of the heat exchanger
Put at least two temperature sensors；Each described temperature sensor is in real time to the surface of the heat exchanger
Temperature is detected；The minimum temperature value in the detected value is selected in real time, by the minimum temperature value
As the value of the surface temperature of the heat exchanger.
Further, the process for arranging at least two temperature sensors in the bottom of the heat exchanger includes：
Arrange apart from the position of flat heat exchange pipe 12cm～18cm above the lower header of the bottom of the heat exchanger
At least two temperature sensors, wherein, it is preferably arranged to：All temperature sensors are arranged at into next part
Flow tube top selects this kind of design cold mainly due to interior apart from the position of flat heat exchange pipe 15cm
Air generally accumulates in indoor position on the lower, temperature sensor is arranged at into exchanger base and more can
The surface temperature of heat exchanger and the difference in size of freezing point temperature are enough accurately judged to, adjustment afterwards is controlled
Can be more accurate.
The aperture of electric expansion valve in c, the radiant air conditioning according to testing result real-time adjustment so that
The surface temperature of the heat exchanger is constant higher than freezing point temperature.
Further, electronic expansion in the radiant air conditioning according to testing result real-time adjustment in step c
The process of the aperture of valve at least includes one of the following：
When the value for detecting the surface temperature is more than freezing point temperature but less than or equal to the first of systemic presupposition
During temperature value, to preset the aperture that the first adjustment amplitude increases the electric expansion valve；
It is when the value for detecting the surface temperature is more than first temperature value but pre- less than or equal to system
If second temperature value when, keep the aperture of the electric expansion valve constant；
It is when the value for detecting the surface temperature is more than the second temperature value but pre- less than or equal to system
If three temperature values when, to preset the aperture that the second adjustment amplitude reduces the electric expansion valve；
When the value for detecting the surface temperature is more than the 4th temperature value of systemic presupposition, but it is less than or equal to
Freezing point temperature, and when detecting the temperature value of at least one temperature sensor more than freezing point temperature, with
Default 3rd adjustment amplitude increases the aperture of the electric expansion valve.
Wherein, the value of the first adjustment amplitude and the second adjustment amplitude is：1B/5s～3B/5s, preferably
, the value of the first adjustment amplitude and the second adjustment amplitude is disposed as into 2B/5s, when being embodied as, use
Family can arbitrarily arrange according to demand the value of the first adjustment amplitude and the second adjustment amplitude；3rd adjustment width
The value of degree is 3B/s～6B/s, it is preferred that the value of the 3rd adjustment amplitude is set into 5B/s, equally,
User can arbitrarily arrange according to demand the value of the 3rd adjustment amplitude.
Preferably, the first temperature value is set into 1 DEG C, second temperature value is set into 2 DEG C, by the 3rd
Temperature value is set to 4 DEG C, and the 4th temperature value is set into -1 DEG C, and equally, user can voluntarily be arranged
State first, second, third and fourth temperature value.
The running frequency of compressor keeps stable in the control method, and the temperature of room air will not be made
Into impact, on the premise of compressor keeps stable frequency to run, by changing opening for electric expansion valve
Degree realizes the regulation to the surface temperature of heat exchanger in indoor set, is learnt by testing detection, adopts
The method can make the surface temperature of the heat exchanger constant higher than freezing point temperature, effectively prevent room
There is the phenomenon of frosting in heat exchanger in interior machine, heat exchanger is avoided well and is damaged, and extends room
The service life of interior machine, applicability is more preferable.
As shown in figure 3, in some optional embodiments, disclosing a kind of prevention radiant air conditioning room
The control method of heat exchanger frosting in interior machine, the control method includes：
Room air is dehumidified after d, compressor start operation, the humidity of room air is adjusted to
After the humidity of systemic presupposition, compressor is with ongoing frequency operation.
A, holding compressor operating frequency are constant；
The surface temperature of the heat exchanger of indoor set in b, real-time detection radiant air conditioning；
Further, step b is specifically included：Temperature sensor is set in the bottom of the heat exchanger, is adopted
With the surface temperature of heat exchanger described in the temperature sensor real-time detection.
Further, temperature sensor is set in the bottom of the heat exchanger, using the temperature sensor
The process of the surface temperature of heat exchanger described in real-time detection is specifically included：Set in the bottom of the heat exchanger
Put at least two temperature sensors；Each described temperature sensor is in real time to the surface of the heat exchanger
Temperature is detected；The minimum temperature value in the detected value is selected in real time, by the minimum temperature value
As the value of the surface temperature of the heat exchanger.
Further, the process for arranging at least two temperature sensors in the bottom of the heat exchanger includes：
Arrange apart from the position of flat heat exchange pipe 12cm～18cm above the lower header of the bottom of the heat exchanger
At least two temperature sensors, wherein, it is preferably arranged to：All temperature sensors are arranged at into next part
Flow tube top selects this kind of design cold mainly due to interior apart from the position of flat heat exchange pipe 15cm
Air generally accumulates in indoor position on the lower, temperature sensor is arranged at into exchanger base and more can
The surface temperature of heat exchanger and the difference in size of freezing point temperature are enough accurately judged to, adjustment afterwards is controlled
Can be more accurate.
The aperture of electric expansion valve in c, the radiant air conditioning according to testing result real-time adjustment so that
The surface temperature of the heat exchanger is constant higher than freezing point temperature.
Further, electronic expansion in the radiant air conditioning according to testing result real-time adjustment in step c
The process of the aperture of valve at least includes one of the following：
When the value for detecting the surface temperature is more than freezing point temperature but less than or equal to the first of systemic presupposition
During temperature value, to preset the aperture that the first adjustment amplitude increases the electric expansion valve；
It is when the value for detecting the surface temperature is more than first temperature value but pre- less than or equal to system
If second temperature value when, keep the aperture of the electric expansion valve constant；
It is when the value for detecting the surface temperature is more than the second temperature value but pre- less than or equal to system
If three temperature values when, to preset the aperture that the second adjustment amplitude reduces the electric expansion valve；
When the value for detecting the surface temperature is more than the 4th temperature value of systemic presupposition, but it is less than or equal to
Freezing point temperature, and when detecting the temperature value of at least one temperature sensor more than freezing point temperature, with
Default 3rd adjustment amplitude increases the aperture of the electric expansion valve.
Wherein, the value of the first adjustment amplitude and the second adjustment amplitude is：1B/5s～3B/5s, preferably
, the value of the first adjustment amplitude and the second adjustment amplitude is disposed as into 2B/5s, when being embodied as, use
Family can arbitrarily arrange according to demand the value of the first adjustment amplitude and the second adjustment amplitude；3rd adjustment width
The value of degree is 3B/s～6B/s, it is preferred that the value of the 3rd adjustment amplitude is set into 5B/s, equally,
User can arbitrarily arrange according to demand the value of the 3rd adjustment amplitude.
Preferably, the first temperature value is set into 1 DEG C, second temperature value is set into 2 DEG C, by the 3rd
Temperature value is set to 4 DEG C, and the 4th temperature value is set into -1 DEG C, and equally, user can voluntarily be arranged
State first, second, third and fourth temperature value.
E, freezing point temperature is respectively less than and duration exceedes when the temperature value for detecting all temperature sensors
During the safe duration of systemic presupposition, compressor shuts down；
Wherein, a length of 1～3 minute when safe, it is preferred that be set to safe duration 2 minutes, use
Family can voluntarily arrange according to demand the safe duration.
F, the surface temperature for continuing the detection heat exchanger, when the surface temperature for detecting the heat exchanger
More than the 3rd temperature value and during compressor shutdown duration more than systemic presupposition out of service, compression
Machine resumes operation and execution step d again.
Wherein, a length of 2～4 minutes during shutdown, it is preferred that duration will be shut down and be set to 3 minutes, together
Sample, user can voluntarily arrange the shutdown duration.
The running frequency of compressor keeps stable in the control method, and the temperature of room air will not be made
Into impact, on the premise of compressor keeps stable frequency to run, by changing opening for electric expansion valve
Degree realizes the regulation to the surface temperature of heat exchanger in indoor set, is learnt by testing detection, adopts
The method can make the surface temperature of the heat exchanger constant higher than freezing point temperature, effectively prevent room
There is the phenomenon of frosting in heat exchanger in interior machine, heat exchanger is avoided well and is damaged, and extends room
The service life of interior machine, applicability is more preferable.
In a word, embodiments of the invention are the foregoing is only, is merely to illustrate the principle of the present invention, and
It is non-for limiting protection scope of the present invention.It is all within the spirit and principles in the present invention, made appoint
What modification, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. it is a kind of prevention radiant air conditioning indoor set in heat exchanger frosting control method, it is characterised in that
Including：
A, holding compressor operating frequency are constant；
The surface temperature of the heat exchanger of indoor set in b, real-time detection radiant air conditioning；
The aperture of electric expansion valve in c, the radiant air conditioning according to testing result real-time adjustment so that
The surface temperature of the heat exchanger is constant higher than freezing point temperature.
2. control method according to claim 1, it is characterised in that step b is specifically wrapped
Include：Temperature sensor is set in the bottom of the heat exchanger, using the temperature sensor real-time detection
The surface temperature of the heat exchanger.
3. control method according to claim 2, it is characterised in that described in the heat exchanger
Bottom arrange temperature sensor, using the surface of heat exchanger described in the temperature sensor real-time detection
The process of temperature is specifically included：
In the bottom of the heat exchanger, at least two temperature sensors are set；
Each described temperature sensor is detected to the surface temperature of the heat exchanger in real time；
The minimum temperature value in the detected value is selected in real time, and the minimum temperature value is changed as described
The value of the surface temperature of hot device.
4. control method according to claim 3, it is characterised in that described in the heat exchanger
Bottom arrange at least two temperature sensors process include：In the next part of the bottom of the heat exchanger
Flow tube top arranges at least two temperature sensors apart from the position of flat heat exchange pipe 12cm～18cm.
5. control method according to claim 4, it is characterised in that basis in step c
Under the process of the aperture of electric expansion valve at least includes in radiant air conditioning described in testing result real-time adjustment
One of state：
When the value for detecting the surface temperature is more than freezing point temperature but less than or equal to the first of systemic presupposition
During temperature value, to preset the aperture that the first adjustment amplitude increases the electric expansion valve；
It is when the value for detecting the surface temperature is more than first temperature value but pre- less than or equal to system
If second temperature value when, keep the aperture of the electric expansion valve constant；
It is when the value for detecting the surface temperature is more than the second temperature value but pre- less than or equal to system
If three temperature values when, to preset the aperture that the second adjustment amplitude reduces the electric expansion valve；
When the value for detecting the surface temperature is more than the 4th temperature value of systemic presupposition, but it is less than or equal to
Freezing point temperature, and when detecting the temperature value of at least one temperature sensor more than freezing point temperature, with
Default 3rd adjustment amplitude increases the aperture of the electric expansion valve.
6. control method according to claim 5, it is characterised in that before step a also
Including：
Room air is dehumidified after d, compressor start operation, the humidity of room air is adjusted to
After the humidity of systemic presupposition, compressor is with ongoing frequency operation.
7. control method according to claim 6, it is characterised in that also include：
E, freezing point temperature is respectively less than and duration exceedes when the temperature value for detecting all temperature sensors
During the safe duration of systemic presupposition, compressor shuts down；
F, the surface temperature for continuing the detection heat exchanger, when the surface temperature for detecting the heat exchanger
More than the 3rd temperature value and during compressor shutdown duration more than systemic presupposition out of service, compression
Machine resumes operation and execution step d again.
8. control method according to claim 7, it is characterised in that a length of 1 when described safe～
3 minutes.
9. control method according to claim 8, it is characterised in that a length of 2 during the shutdown～
4 minutes.
10. control method according to claim 9, it is characterised in that the first adjustment width
The value of degree and the described second adjustment amplitude is：1B/5s～3B/5s；The value of the 3rd adjustment amplitude
For 3B/s～6B/s.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510728890.2A CN106642509B (en) | 2015-10-30 | 2015-10-30 | A kind of control method for preventing heat exchanger frosting in radiant air conditioning indoor unit |
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|---|---|---|---|
| CN201510728890.2A CN106642509B (en) | 2015-10-30 | 2015-10-30 | A kind of control method for preventing heat exchanger frosting in radiant air conditioning indoor unit |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631254A (en) * | 2018-12-07 | 2019-04-16 | Tcl空调器(中山)有限公司 | Air conditioner, air conditioner heat-production control method and computer readable storage medium |
| WO2019080730A1 (en) * | 2017-10-25 | 2019-05-02 | 青岛海尔空调器有限总公司 | Air conditioner and control method therefor |
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| CN111189174A (en) * | 2018-11-14 | 2020-05-22 | 青岛海尔空调器有限总公司 | Air conditioner and anti-freezing control method thereof |
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| CN111189178B (en) * | 2018-11-14 | 2021-09-21 | 重庆海尔空调器有限公司 | Air conditioner and anti-freezing control method thereof |
| CN111189174B (en) * | 2018-11-14 | 2021-09-21 | 重庆海尔空调器有限公司 | Air conditioner and anti-freezing control method thereof |
| CN109631254A (en) * | 2018-12-07 | 2019-04-16 | Tcl空调器(中山)有限公司 | Air conditioner, air conditioner heat-production control method and computer readable storage medium |
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| CN111503828A (en) * | 2020-04-29 | 2020-08-07 | 广东美的制冷设备有限公司 | Air conditioner and control method thereof |
| CN112283878A (en) * | 2020-09-18 | 2021-01-29 | 珠海格力电器股份有限公司 | Air conditioner control method and device, storage medium and air conditioner |
| CN112283878B (en) * | 2020-09-18 | 2021-09-28 | 珠海格力电器股份有限公司 | Air conditioner control method and device, storage medium and air conditioner |
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