CN106403204A - Air conditioner refrigerating capacity detection method, system and air conditioner - Google Patents
Air conditioner refrigerating capacity detection method, system and air conditioner Download PDFInfo
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- CN106403204A CN106403204A CN201611070574.1A CN201611070574A CN106403204A CN 106403204 A CN106403204 A CN 106403204A CN 201611070574 A CN201611070574 A CN 201611070574A CN 106403204 A CN106403204 A CN 106403204A
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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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
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The invention relates to an air conditioner refrigerating capacity detection method, a system and an air conditioner, which relate to the technical field of air conditioning. The method comprises the steps of detecting the air dry bulb temperature and relative humidity of an air return inlet of an indoor unit or an outdoor unit of the air conditioner when the air conditioner is operated in a refrigeration mode, and calculating to obtain the air enthalpy of the air return inlet; detecting the air dry bulb temperature and relative humidity of an air outlet of the indoor unit or the outdoor unit of the air conditioner, and calculating to obtain the air enthalpy and wet air density of the air outlet; detecting the air supply speed of the air outlet of the indoor unit or the outdoor unit of the air conditioner; and calculating to obtain the refrigerating capacity of the air conditioner according to the air supply speed, air enthalpy and wet air density of the air outlet, the air enthalpy of the air return inlet and the area, which is measured in advance, of the air outlet. According to the air conditioner refrigerating capacity detection method, the system and the air conditioner, relevant parameters such as temperature, humidity, air speed and the like of the air conditioner are detected, and the refrigerating capacity of the air conditioner is calculated in real time according to the parameters.
Description
Technical field
The present invention relates to air-conditioning regulation technology field.
Background technology
On the nameplate of room air conditioner, nominal refrigerating capacity is under conditions of national Specification, the test side of regulation
FAXIA tests out, and when actually used, room air conditioner fan-out capability changes with use environment and state change, its
Fan-out capability is nominally different from nameplate in good time, and its fan-out capability is with indoor (outward) air themperature, interior (outward) air humidity, room
Interior design temperature and actual temperature difference, power supply (as supply voltage), compressor operating frequency, indoor and outdoor blower fan gear,
The many factors such as heat exchanger heat exchange situation change and change, but have specifically changed how many, and fan-out capability is much not quantizations,
User is at all unclear.Can be by the various use state of laboratory simulation to its fan-out capability inside air-conditioner manufacturing enterprise
Refrigerating capacity (refrigerating capacity) carries out quantitative test, in field of employment, due to there is the technical problems such as sampling, operation program, market
On also there is no similar products.
Content of the invention
The technical problem to be solved is to provide a kind of air conditioner refrigerating quantity measuring method, system and air-conditioner, mesh
Be solve the problems, such as that existing air-conditioner especially domestic air conditioner cannot the real-time detection air-conditioner refrigerating capacity of itself.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of air conditioner refrigerating quantity measuring method, methods described
Including：
Whether detection air-conditioning operates in refrigeration mode, if it is, carrying out refrigerating capacity detection, if it is not, then until detection
Carry out refrigerating capacity detection to operation of air conditioner in refrigeration mode；
Air dry-bulb temperature at the return air inlet of detection indoor apparatus of air conditioner or off-premises station and relative humidity, calculate and obtain back
Air enthalpy at air port；
The air dry-bulb temperature of air outlet of detection indoor apparatus of air conditioner or off-premises station and relative humidity, calculate and obtain air outlet
The air enthalpy at place and density of moist air；
The air supply velocity of the air outlet of detection indoor apparatus of air conditioner or off-premises station；
Survey according to the air enthalpy at the air supply velocity of air outlet, air enthalpy, density of moist air, return air inlet and in advance
The air port areal calculation of the air outlet of amount obtains the refrigerating capacity of air-conditioning.
The invention has the beneficial effects as follows：The present invention by relevant parameters such as air-conditioning itself detection temperature, humidity, wind speed,
And the refrigerating capacity of air-conditioner is calculated in real time according to above-mentioned parameter, user can intuitively know sky according to the situation of change of refrigerating capacity
Whether the working condition adjusted exception, if because failure problems can be keeped in repair in advance, if asking due to aging
Topic then can be changed in time, facilitates the real-time understanding for air-conditioning for the user.
On the basis of technique scheme, the present invention can also do following improvement：
Further, the acquisition process of the air enthalpy at described return air inlet is：
Air dry-bulb temperature at the return air inlet of detection indoor apparatus of air conditioner or off-premises station, obtains wet according to air dry-bulb temperature
Under air, dry-bulb temperature corresponds to saturated steam partial pressure；
Relative humidity at the return air inlet of detection indoor apparatus of air conditioner or off-premises station, at described relative humidity and return air inlet
Humid air under the corresponding saturated steam partial pressure of dry-bulb temperature obtain corresponding unsaturation humid air partial pressure under relative humidity；
Under the relative humidity at return air inlet according to indoor apparatus of air conditioner or off-premises station, corresponding unsaturation humid air partial pressure obtains
The water capacity of in the air at return air inlet；
Water capacity according in the air at return air inlet and air dry-bulb temperature obtain the air enthalpy at return air inlet.
Beneficial effect using above-mentioned further scheme is：The total amount of heat that the in the air that refers to the enthalpy of in the air contains is permissible
The change of the specific enthalpy in processing procedure of the air according to certain mass, to judge that air obtains heat or loses heat.
Further, methods described also includes the step that the air dry-bulb temperature at return air inlet is judged, when described time
When air dry-bulb temperature is more than or equal to -100 DEG C and is less than 0 DEG C at air port, obtain dry-bulb temperature under humid air at return air inlet and correspond to
First saturated steam partial pressure；When at described return air inlet, air dry-bulb temperature is more than or equal to 0 DEG C and is less than 250 DEG C, obtain back
Under humid air at air port, dry-bulb temperature corresponds to the second saturated steam partial pressure.
Beneficial effect using above-mentioned further scheme is：For the difference of pressure in the case of different air dry-bulb temperatures,
Air dry-bulb temperature situation is classified such that it is able to corresponding saturated steam is obtained according to actual air dry-bulb temperature
Partial pressure.
Further, the acquisition process of the air enthalpy at described air outlet is：
Air dry-bulb temperature at the air outlet of detection indoor apparatus of air conditioner or off-premises station, obtains wet according to air dry-bulb temperature
Under air, dry-bulb temperature corresponds to saturated steam partial pressure；
Relative humidity at the air outlet of detection indoor apparatus of air conditioner or off-premises station, at described relative humidity and air outlet
Humid air under the corresponding saturated steam partial pressure of dry-bulb temperature obtain corresponding unsaturation humid air partial pressure under relative humidity；
Under the relative humidity at air outlet according to indoor apparatus of air conditioner or off-premises station, corresponding unsaturation humid air partial pressure obtains
The water capacity of in the air at air outlet；
Water capacity according in the air at air outlet and air dry-bulb temperature obtain the air enthalpy at air outlet.
Beneficial effect using above-mentioned further scheme is：The total amount of heat that the in the air that refers to the enthalpy of in the air contains is permissible
The change of the specific enthalpy in processing procedure of the air according to certain mass, to judge that air obtains heat or loses heat.
Further, the density of moist air at described air outlet according to the air dry-bulb temperature at air outlet, air outlet at
Under relative humidity at relative humidity and air outlet, corresponding unsaturation humid air partial pressure calculates and obtains.
Further, methods described also includes the step that the air dry-bulb temperature at air outlet is judged, send when described
When air dry-bulb temperature is more than or equal to -100 DEG C and is less than 0 DEG C at air port, obtain dry-bulb temperature under humid air at air outlet and correspond to
First saturated steam partial pressure；When at described air outlet, air dry-bulb temperature is more than or equal to 0 DEG C and is less than 250 DEG C, acquisition is sent
Under humid air at air port, dry-bulb temperature corresponds to the second saturated steam partial pressure.
Beneficial effect using above-mentioned further scheme is：For the difference of pressure in the case of different air dry-bulb temperatures,
Air dry-bulb temperature situation is classified such that it is able to corresponding saturated steam is obtained according to actual air dry-bulb temperature
Partial pressure.
In order to solve above-mentioned technical problem, the invention allows for a kind of air conditioner refrigerating amount detection systems, described system bag
Include：
Mode detection module, for detecting whether air-conditioning operates in refrigeration mode, if it is, carrying out refrigerating capacity detection,
If it is not, then until operation of air conditioner is detected to carry out refrigerating capacity detection in refrigeration mode；
Return air inlet detects computing module, for detecting the air dry-bulb temperature at the return air inlet of indoor apparatus of air conditioner or off-premises station
And relative humidity, calculate the air enthalpy obtaining at return air inlet；
Air outlet detects computing module, for when operation of air conditioner is in refrigeration mode, detecting indoor apparatus of air conditioner or off-premises station
The air dry-bulb temperature of air outlet and relative humidity, calculate obtain air outlet at air enthalpy and density of moist air；
Air supply velocity detection module, for detecting the air supply velocity of the air outlet of indoor apparatus of air conditioner or off-premises station；
Refrigerating capacity computing module, for according to the air supply velocity of air outlet, air enthalpy, density of moist air, return air inlet
The air port areal calculation of the air enthalpy at place and the air outlet measuring in advance obtains the refrigerating capacity of air-conditioning.
The invention has the beneficial effects as follows：The present invention by relevant parameters such as air-conditioning itself detection temperature, humidity, wind speed,
And the refrigerating capacity of air-conditioner is calculated in real time according to above-mentioned parameter, user can intuitively know sky according to the situation of change of refrigerating capacity
Whether the working condition adjusted exception, if because failure problems can be keeped in repair in advance, if asking due to aging
Topic then can be changed in time, facilitates the real-time understanding for air-conditioning for the user.
Further, described return air inlet detection computing module includes：
Return air inlet steam partial pressure computing module, dry for detecting the air at the return air inlet of indoor apparatus of air conditioner or off-premises station
Ball temperature, obtains dry-bulb temperature under humid air according to air dry-bulb temperature and corresponds to saturated steam partial pressure；
Return air inlet humid air partial pressure computing module is relatively wet at the return air inlet of indoor apparatus of air conditioner or off-premises station for detecting
Degree, according to dry-bulb temperature corresponding saturated steam partial pressure acquisition relative humidity under the humid air at described relative humidity and return air inlet
Lower corresponding unsaturation humid air partial pressure；
Return air inlet water capacity computing module, under the relative humidity at the return air inlet according to indoor apparatus of air conditioner or off-premises station
Corresponding unsaturation humid air partial pressure obtains the water capacity of in the air at return air inlet；
Return air inlet air enthalpy computing module, for the water capacity according in the air at return air inlet and air dry-bulb temperature
Obtain the air enthalpy at return air inlet.
Beneficial effect using above-mentioned further scheme is：The total amount of heat that the in the air that refers to the enthalpy of in the air contains is permissible
The change of the specific enthalpy in processing procedure of the air according to certain mass, to judge that air obtains heat or loses heat.
Further, described system also includes return air inlet temperature judge module, for the air dry-bulb temperature at return air inlet
Judged, when air dry-bulb temperature is more than or equal to -100 DEG C and is less than 0 DEG C at described return air inlet, obtained wet sky at return air inlet
Under gas, dry-bulb temperature corresponds to the first saturated steam partial pressure；At described return air inlet, air dry-bulb temperature is more than or equal to 0 DEG C and little
When 250 DEG C, obtain dry-bulb temperature under humid air at return air inlet and correspond to the second saturated steam partial pressure.
Beneficial effect using above-mentioned further scheme is：For the difference of pressure in the case of different air dry-bulb temperatures,
Air dry-bulb temperature situation is classified such that it is able to corresponding saturated steam is obtained according to actual air dry-bulb temperature
Partial pressure.
Further, described air outlet detection computing module includes：
Air outlet steam partial pressure computing module, for detecting the air at the air outlet of indoor apparatus of air conditioner or off-premises station
Dry-bulb temperature, obtains dry-bulb temperature under humid air according to air dry-bulb temperature and corresponds to saturated steam partial pressure；
Air outlet humid air partial pressure computing module is relatively wet at the air outlet of indoor apparatus of air conditioner or off-premises station for detecting
Degree, according to dry-bulb temperature corresponding saturated steam partial pressure acquisition relative humidity under the humid air at described relative humidity and air outlet
Lower corresponding unsaturation humid air partial pressure；
Air outlet water capacity computing module, under the relative humidity at the air outlet according to indoor apparatus of air conditioner or off-premises station
Corresponding unsaturation humid air partial pressure obtains the water capacity of in the air at air outlet；
Air outlet air enthalpy computing module, for the water capacity according in the air at air outlet and air dry-bulb temperature
Obtain the air enthalpy at air outlet.
Beneficial effect using above-mentioned further scheme is：The total amount of heat that the in the air that refers to the enthalpy of in the air contains is permissible
The change of the specific enthalpy in processing procedure of the air according to certain mass, to judge that air obtains heat or loses heat.
Further, described air outlet detection computing module also includes air outlet density of moist air computing module, for basis
Corresponding unsaturated wet sky under relative humidity at relative humidity at air dry-bulb temperature at air outlet, air outlet and air outlet
Edema caused by disorder of QI pressure calculates the density of moist air obtaining at air outlet.
Further, described system also includes air outlet temperature judge module, for the air dry-bulb temperature at air outlet
Judged, when air dry-bulb temperature is more than or equal to -100 DEG C and is less than 0 DEG C at described air outlet, obtained wet sky at air outlet
Under gas, dry-bulb temperature corresponds to the first saturated steam partial pressure；At described air outlet, air dry-bulb temperature is more than or equal to 0 DEG C and little
When 250 DEG C, obtain dry-bulb temperature under humid air at air outlet and correspond to the second saturated steam partial pressure.
Beneficial effect using above-mentioned further scheme is：For the difference of pressure in the case of different air dry-bulb temperatures,
Air dry-bulb temperature situation is classified such that it is able to corresponding saturated steam is obtained according to actual air dry-bulb temperature
Partial pressure.
The present invention also proposes a kind of air-conditioner, and described air-conditioner includes air conditioner refrigerating amount detection systems described above.
Further, the return air inlet of described air-conditioner and air outlet are mounted on Temperature Humidity Sensor, are respectively used to detect back
Air dry-bulb temperature at air port and air outlet and relative humidity.
Further, the air outlet of described air-conditioner is provided with multiple velocity sensors, for detecting the air-supply speed of air outlet
Degree, and the air supply velocity of each velocity sensor detection is averaged.
Beneficial effect using above-mentioned further scheme is：Result of calculation can be made more smart by averaging to wind speed
Really.
Brief description
Fig. 1 is the flow chart of the air conditioner refrigerating quantity measuring method described in the embodiment of the present invention；
Fig. 2 is the principle schematic of the air conditioner refrigerating amount detection systems described in the embodiment of the present invention.
Specific embodiment
Below in conjunction with accompanying drawing, the principle of the present invention and feature are described, example is served only for explaining the present invention, and
Non- for limiting the scope of the present invention.
Embodiment 1
As shown in figure 1, the present embodiment proposes a kind of air conditioner refrigerating quantity measuring method, detection air-conditioning first is before testing
No operate in refrigeration mode, carry out refrigerating capacity detection when air-conditioning is in refrigeration mode, otherwise until operation of air conditioner is detected and existing
Carry out refrigerating capacity detection during refrigeration mode；Specifically refrigerating capacity detection process is：
Air dry-bulb temperature at the return air inlet of S1, detection indoor apparatus of air conditioner or off-premises station and relative humidity, calculate and obtain
Air enthalpy at return air inlet；
S2, when operation of air conditioner is in refrigeration mode, detection indoor apparatus of air conditioner or off-premises station air outlet air dry bulb temperature
Degree and relative humidity, calculate air enthalpy and the density of moist air obtaining at air outlet；
The air supply velocity of the air outlet of S3, detection indoor apparatus of air conditioner or off-premises station；
Air enthalpy at S4, the air supply velocity according to air outlet, air enthalpy, density of moist air, return air inlet and pre-
The air port areal calculation of the air outlet first measuring obtains the refrigerating capacity of air-conditioning.
The concrete calculating process of air enthalpy at return air inlet is as follows：
Air dry-bulb temperature T at the return air inlet of detection indoor apparatus of air conditioner or off-premises station1, at described return air inlet, air is done
Ball temperature T1When being more than or equal to -100 DEG C and being less than 0 DEG C, under humid air at return air inlet, dry-bulb temperature corresponds to saturated steam partial pressure
Pqb=exp (a0+a1T1+a2T1 2+a3T1 3+a4T1 4)；Air dry-bulb temperature T at described return air inlet1More than or equal to 0 DEG C and be less than
When 250 DEG C, under humid air at return air inlet, dry-bulb temperature corresponds to saturated steam partial pressure Pqb=exp (b0+b1T1+b2T1 2+b3T1 3+
b4T1 4), wherein aiAnd biIt is constant, i=1,2,3,4.
Relative humidity Φ at the return air inlet of detection indoor apparatus of air conditioner or off-premises station1, according to described relative humidity and return air
Under humid air at mouthful, the corresponding saturated steam partial pressure of dry-bulb temperature obtains corresponding unsaturation humid air partial pressure Pq under relative humidity
=Pqb × Φ1.
Under the relative humidity at return air inlet according to indoor apparatus of air conditioner or off-premises station, corresponding unsaturation humid air partial pressure Pq obtains
Obtain water capacity d=0.62197Pq/ (P-Pq) of in the air at return air inlet, wherein P is current atmospheric pressure.
Water capacity d according in the air at return air inlet and air dry-bulb temperature T1Obtain the air enthalpy H at return air inlet
=1.01T1+(2500+1.84T1)d.
The concrete calculating process of air enthalpy at air outlet is as follows：
Air dry-bulb temperature when operation of air conditioner is in refrigeration mode, at the air outlet of detection indoor apparatus of air conditioner or off-premises station
T2, air dry-bulb temperature T at described air outlet2When being more than or equal to -100 DEG C and being less than 0 DEG C, obtain under humid air at air outlet
Dry-bulb temperature corresponds to saturated steam partial pressure Pqb '=exp (a0+a1T2+a2T2 2+a3T2 3+a4T2 4)；Air at described air outlet
Dry-bulb temperature T2During more than or equal to 0 DEG C and less than 250 DEG C, obtain at air outlet dry-bulb temperature under humid air and correspond to saturated steam
Partial pressure Pqb '=exp (b0+b1T2+b2T2 2+b3T2 3+b4T2 4), wherein aiAnd biIt is constant, i=1,2,3,4.
Relative humidity Φ at the air outlet of detection indoor apparatus of air conditioner or off-premises station2, according to described relative humidity and air-supply
Under humid air at mouthful, the corresponding saturated steam partial pressure of dry-bulb temperature obtains corresponding unsaturation humid air partial pressure Pq under relative humidity '
=Pqb ' × Φ2.
Corresponding unsaturation humid air partial pressure Pq under the relative humidity at air outlet according to indoor apparatus of air conditioner or off-premises station ' obtain
Obtain water capacity d of in the air at air outlet '=0.62197Pq '/(P-Pq '), wherein P is current atmospheric pressure.
Water capacity d according in the air at air outlet ' and air dry-bulb temperature T2Obtain the air enthalpy at air outlet
H '=1.01T2+(2500+1.84T2)d’.
Density of moist air at air outlet can according to the air dry-bulb temperature at air outlet, the relative humidity at air outlet with
And corresponding unsaturation humid air partial pressure calculates acquisition under relative humidity at air outlet, concrete calculation relational expression is：ρ=ρ0273/
(273+T2)*(P-0.0378Φ2Pq ')/0.1013, ρ0For constant.
Air-supply open area S can be by measuring air conditioner room unit or off-premises station air outlet length L and width W, thus calculating
Go out open area S=LxW of blowing, and this area S is implanted in controller of air conditioner calculation procedure as constant.
The air port area of air outlet, air supply velocity, air enthalpy, humid air have been calculated respectively by above calculating process
Air enthalpy at density and return air inlet, above parameter is passed through to calculate the refrigerating capacity being obtained in that air-conditioning：Q=ρ S (H-
H ')/(1+d '), the refrigerating capacity of the refrigerating capacity calculating as air-conditioner.
Embodiment 2
As shown in Fig. 2 the present embodiment proposes a kind of air conditioner refrigerating amount detection systems, described system includes：
Mode detection module, for detecting whether air-conditioning operates in refrigeration mode, if it is, carrying out refrigerating capacity detection,
If it is not, then until operation of air conditioner is detected to carry out refrigerating capacity detection in refrigeration mode；
Return air inlet detects computing module, for detecting the air dry-bulb temperature at the return air inlet of indoor apparatus of air conditioner or off-premises station
And relative humidity, calculate the air enthalpy obtaining at return air inlet；
Air outlet detects computing module, for when operation of air conditioner is in refrigeration mode, detecting indoor apparatus of air conditioner or off-premises station
The air dry-bulb temperature of air outlet and relative humidity, calculate obtain air outlet at air enthalpy and density of moist air；
Air supply velocity detection module, for detecting the air supply velocity of the air outlet of indoor apparatus of air conditioner or off-premises station；
Refrigerating capacity computing module, for according to the air supply velocity of air outlet, air enthalpy, density of moist air, return air inlet
The air port areal calculation of the air enthalpy at place and the air outlet measuring in advance obtains the refrigerating capacity of air-conditioning.
The concrete calculating process of air enthalpy at return air inlet is as follows：
Air dry-bulb temperature T at the return air inlet of detection indoor apparatus of air conditioner or off-premises station1, at described return air inlet, air is done
Ball temperature T1When being more than or equal to -100 DEG C and being less than 0 DEG C, under humid air at return air inlet, dry-bulb temperature corresponds to saturated steam partial pressure
Pqb=exp (a0+a1T1+a2T1 2+a3T1 3+a4T1 4)；Air dry-bulb temperature T at described return air inlet1More than or equal to 0 DEG C and be less than
When 250 DEG C, under humid air at return air inlet, dry-bulb temperature corresponds to saturated steam partial pressure Pqb=exp (b0+b1T1+b2T1 2+b3T1 3+
b4T1 4), wherein aiAnd biIt is constant, i=1,2,3,4.
Relative humidity Φ at the return air inlet of detection indoor apparatus of air conditioner or off-premises station1, according to described relative humidity and return air
Under humid air at mouthful, the corresponding saturated steam partial pressure of dry-bulb temperature obtains corresponding unsaturation humid air partial pressure Pq under relative humidity
=Pqb × Φ1.
Under the relative humidity at return air inlet according to indoor apparatus of air conditioner or off-premises station, corresponding unsaturation humid air partial pressure Pq obtains
Obtain water capacity d=0.62197Pq/ (P-Pq) of in the air at return air inlet, wherein P is current atmospheric pressure.
Water capacity d according in the air at return air inlet and air dry-bulb temperature T1Obtain the air enthalpy H at return air inlet
=1.01T1+(2500+1.84T1)d.
The concrete calculating process of air enthalpy at air outlet is as follows：
Air dry-bulb temperature when operation of air conditioner is in refrigeration mode, at the air outlet of detection indoor apparatus of air conditioner or off-premises station
T2, air dry-bulb temperature T at described air outlet2When being more than or equal to -100 DEG C and being less than 0 DEG C, obtain under humid air at air outlet
Dry-bulb temperature corresponds to saturated steam partial pressure Pqb '=exp (a0+a1T2+a2T2 2+a3T2 3+a4T2 4)；Empty at described air outlet
Gas dry-bulb temperature T2During more than or equal to 0 DEG C and less than 250 DEG C, obtain at air outlet the corresponding saturation water of dry-bulb temperature under humid air and steam
Edema caused by disorder of QI presses Pqb '=exp (b0+b1T2+b2T2 2+b3T2 3+b4T2 4), wherein aiAnd biIt is constant, i=1,2,3,4.
Relative humidity Φ at the air outlet of detection indoor apparatus of air conditioner or off-premises station2, according to described relative humidity and air-supply
Under humid air at mouthful, the corresponding saturated steam partial pressure of dry-bulb temperature obtains corresponding unsaturation humid air partial pressure Pq under relative humidity '
=Pqb ' × Φ2.
Corresponding unsaturation humid air partial pressure Pq under the relative humidity at air outlet according to indoor apparatus of air conditioner or off-premises station ' obtain
Obtain water capacity d of in the air at air outlet '=0.62197Pq '/(P-Pq '), wherein P is current atmospheric pressure.
Water capacity d according in the air at air outlet ' and air dry-bulb temperature T2Obtain the air enthalpy at air outlet
H '=1.01T2+(2500+1.84T2)d’.
Density of moist air at air outlet can according to the air dry-bulb temperature at air outlet, the relative humidity at air outlet with
And corresponding unsaturation humid air partial pressure calculates acquisition under relative humidity at air outlet, concrete calculation relational expression is：ρ=ρ0273/
(273+T2)*(P-0.0378Φ2Pq ')/0.1013, ρ0For constant.
Air-supply open area S can be by measuring air conditioner room unit or off-premises station air outlet length L and width W, thus calculating
Go out open area S=LxW of blowing, and this area S is implanted in controller of air conditioner calculation procedure as constant.
The air port area of air outlet, air supply velocity, air enthalpy, humid air have been calculated respectively by above calculating process
Air enthalpy at density and return air inlet, above parameter is passed through to calculate the refrigerating capacity being obtained in that air-conditioning：Q=ρ S (H-
H ')/(1+d '), the refrigerating capacity of the refrigerating capacity calculating as air-conditioner.
Embodiment 3
The present embodiment proposes a kind of air-conditioner, and described air-conditioner includes air conditioner refrigerating amount detection systems described above.
The return air inlet of described air-conditioner and air outlet are mounted on Temperature Humidity Sensor, are respectively used to detect at return air inlet and air outlet
Air dry-bulb temperature and relative humidity, air outlet is provided with multiple velocity sensors, for detecting the air supply velocity of air outlet,
And the air supply velocity of each velocity sensor detection is averaged.
The calculating process of the refrigerating capacity of air-conditioner can be carried out in the controller within air-conditioner, and the every 60s of controller is extremely
120s samples and calculates the refrigerating capacity of an air-conditioner.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement made etc., should be included within the scope of the present invention.
Claims (15)
1. a kind of air conditioner refrigerating quantity measuring method is it is characterised in that methods described includes：
Whether detection air-conditioning operates in refrigeration mode, if it is, carrying out refrigerating capacity detection, if it is not, then until sky is detected
Tune operates in and carries out refrigerating capacity detection during refrigeration mode；
Air dry-bulb temperature at the return air inlet of detection indoor apparatus of air conditioner or off-premises station and relative humidity, calculate and obtain at return air inlet
Air enthalpy；
The air dry-bulb temperature of air outlet of detection indoor apparatus of air conditioner or off-premises station and relative humidity, calculate and obtain at air outlet
Air enthalpy and density of moist air；
The air supply velocity of the air outlet of detection indoor apparatus of air conditioner or off-premises station；
Measure according to air enthalpy at the air supply velocity of air outlet, air enthalpy, density of moist air, return air inlet and in advance
The air port areal calculation of air outlet obtains the refrigerating capacity of air-conditioning.
2. air conditioner refrigerating quantity measuring method according to claim 1 is it is characterised in that air enthalpy at described return air inlet
Acquisition process be：
Air dry-bulb temperature at the return air inlet of detection indoor apparatus of air conditioner or off-premises station, obtains humid air according to air dry-bulb temperature
Lower dry-bulb temperature corresponds to saturated steam partial pressure；
Relative humidity at the return air inlet of detection indoor apparatus of air conditioner or off-premises station, according to wet at described relative humidity and return air inlet
Under air, the corresponding saturated steam partial pressure of dry-bulb temperature obtains corresponding unsaturation humid air partial pressure under relative humidity；
Under the relative humidity at return air inlet according to indoor apparatus of air conditioner or off-premises station, corresponding unsaturation humid air partial pressure obtains return air
The water capacity of in the air at mouthful；
Water capacity according in the air at return air inlet and air dry-bulb temperature obtain the air enthalpy at return air inlet.
3. air conditioner refrigerating quantity measuring method according to claim 2 is it is characterised in that methods described is also included to return air inlet
The step that the air dry-bulb temperature at place is judged, at described return air inlet, air dry-bulb temperature is more than or equal to -100 DEG C and is less than
When 0 DEG C, obtain dry-bulb temperature under humid air at return air inlet and correspond to the first saturated steam partial pressure；At described return air inlet, air is done
When ball temperature is more than or equal to 0 DEG C and is less than 250 DEG C, obtain dry-bulb temperature under humid air at return air inlet and correspond to the second saturated steam
Partial pressure.
4. air conditioner refrigerating quantity measuring method according to claim 1 is it is characterised in that air enthalpy at described air outlet
Acquisition process be：
Air dry-bulb temperature at the air outlet of detection indoor apparatus of air conditioner or off-premises station, obtains humid air according to air dry-bulb temperature
Lower dry-bulb temperature corresponds to saturated steam partial pressure；
Relative humidity at the air outlet of detection indoor apparatus of air conditioner or off-premises station, according to wet at described relative humidity and air outlet
Under air, the corresponding saturated steam partial pressure of dry-bulb temperature obtains corresponding unsaturation humid air partial pressure under relative humidity；
Under the relative humidity at air outlet according to indoor apparatus of air conditioner or off-premises station, corresponding unsaturation humid air partial pressure obtains air-supply
The water capacity of in the air at mouthful；
Water capacity according in the air at air outlet and air dry-bulb temperature obtain the air enthalpy at air outlet.
5. air conditioner refrigerating quantity measuring method according to claim 4 is it is characterised in that the humid air at described air outlet is close
Degree is according to insatiable hunger corresponding under relative humidity at the air dry-bulb temperature at air outlet, the relative humidity at air outlet and air outlet
Calculate with humid air partial pressure and obtain.
6. the air conditioner refrigerating quantity measuring method according to claim 4 or 5 is it is characterised in that methods described also includes to sending
The step that air dry-bulb temperature at air port is judged, at described air outlet air dry-bulb temperature be more than or equal to -100 DEG C and
During less than 0 DEG C, obtain dry-bulb temperature under humid air at air outlet and correspond to the first saturated steam partial pressure；Empty at described air outlet
When gas dry-bulb temperature is more than or equal to 0 DEG C and is less than 250 DEG C, obtain dry-bulb temperature under humid air at air outlet and correspond to the second saturation water
Partial vapour pressure.
7. a kind of air conditioner refrigerating amount detection systems are it is characterised in that described system includes：
Mode detection module, for detecting whether air-conditioning operates in refrigeration mode, if it is, carrying out refrigerating capacity detection, if
No, then until operation of air conditioner is detected to carry out refrigerating capacity detection in refrigeration mode；
Return air inlet detects computing module, for detecting air dry-bulb temperature and the phase at the return air inlet of indoor apparatus of air conditioner or off-premises station
To humidity, calculate the air enthalpy obtaining at return air inlet；
Air outlet detects computing module, for when operation of air conditioner is in refrigeration mode, the sending of detection indoor apparatus of air conditioner or off-premises station
The air dry-bulb temperature in air port and relative humidity, calculate air enthalpy and the density of moist air obtaining at air outlet；
Air supply velocity detection module, for detecting the air supply velocity of the air outlet of indoor apparatus of air conditioner or off-premises station；
Refrigerating capacity computing module, at according to the air supply velocity of air outlet, air enthalpy, density of moist air, return air inlet
The air port areal calculation of air enthalpy and the air outlet measuring in advance obtains the refrigerating capacity of air-conditioning.
8. air conditioner refrigerating amount detection systems according to claim 7 are it is characterised in that described return air inlet detects computing module
Including：
Return air inlet steam partial pressure computing module, for detecting the air dry bulb temperature at the return air inlet of indoor apparatus of air conditioner or off-premises station
Degree, obtains dry-bulb temperature under humid air according to air dry-bulb temperature and corresponds to saturated steam partial pressure；
Return air inlet humid air partial pressure computing module, for detecting the relative humidity at the return air inlet of indoor apparatus of air conditioner or off-premises station,
Obtained under relative humidity according to dry-bulb temperature corresponding saturated steam partial pressure under the humid air at described relative humidity and return air inlet
Corresponding unsaturation humid air partial pressure；
Return air inlet water capacity computing module, for corresponding under the relative humidity at the return air inlet according to indoor apparatus of air conditioner or off-premises station
Unsaturated humid air partial pressure obtains the water capacity of in the air at return air inlet；
Return air inlet air enthalpy computing module, obtains for the water capacity according in the air at return air inlet and air dry-bulb temperature
Air enthalpy at return air inlet.
9. air conditioner refrigerating amount detection systems according to claim 8 are it is characterised in that described system also includes return air inlet temperature
Degree judge module, for judging, air dry-bulb temperature is big at described return air inlet to the air dry-bulb temperature at return air inlet
When being equal to -100 DEG C and less than 0 DEG C, obtain dry-bulb temperature under humid air at return air inlet and correspond to the first saturated steam partial pressure；When
When air dry-bulb temperature is more than or equal to 0 DEG C and is less than 250 DEG C at described return air inlet, obtain dry-bulb temperature under humid air at return air inlet
Corresponding second saturated steam partial pressure.
10. air conditioner refrigerating amount detection systems according to claim 7 are it is characterised in that the detection of described air outlet calculates mould
Block includes：
Air outlet steam partial pressure computing module, for detecting the air dry bulb temperature at the air outlet of indoor apparatus of air conditioner or off-premises station
Degree, obtains dry-bulb temperature under humid air according to air dry-bulb temperature and corresponds to saturated steam partial pressure；
Air outlet humid air partial pressure computing module, for detecting the relative humidity at the air outlet of indoor apparatus of air conditioner or off-premises station,
Obtained under relative humidity according to dry-bulb temperature corresponding saturated steam partial pressure under the humid air at described relative humidity and air outlet
Corresponding unsaturation humid air partial pressure；
Air outlet water capacity computing module, for corresponding under the relative humidity at the air outlet according to indoor apparatus of air conditioner or off-premises station
Unsaturated humid air partial pressure obtains the water capacity of in the air at air outlet；
Air outlet air enthalpy computing module, obtains for the water capacity according in the air at air outlet and air dry-bulb temperature
Air enthalpy at air outlet.
11. air conditioner refrigerating amount detection systems according to claim 10 are it is characterised in that the detection of described air outlet calculates mould
Block also includes air outlet density of moist air computing module, for according to the air dry-bulb temperature at air outlet, the phase at air outlet
The density of moist air obtaining at air outlet is calculated to unsaturation humid air partial pressure corresponding under relative humidity at humidity and air outlet.
The 12. air conditioner refrigerating amount detection systems according to claim 10 or 11 are it is characterised in that described system also includes sending
Draught temperature judge module, for judging to the air dry-bulb temperature at air outlet, air dry bulb at described air outlet
When temperature is more than or equal to -100 DEG C and is less than 0 DEG C, obtain dry-bulb temperature under humid air at air outlet and correspond to the first saturated steam
Partial pressure；When at described air outlet, air dry-bulb temperature is more than or equal to 0 DEG C and is less than 250 DEG C, obtain under humid air at air outlet
Dry-bulb temperature corresponds to the second saturated steam partial pressure.
A kind of 13. air-conditioners are it is characterised in that described air-conditioner includes the air conditioner refrigerating described in any one of claim 7 to 12
Amount detection systems.
14. air-conditioners according to claim 13 are it is characterised in that the return air inlet of described air-conditioner and air outlet are respectively mounted
There is Temperature Humidity Sensor, be respectively used to detect the air dry-bulb temperature at return air inlet and air outlet and relative humidity.
15. air-conditioners according to claim 13 or 14 it is characterised in that the air outlet of described air-conditioner be provided with multiple
Velocity sensor, for detecting the air supply velocity of air outlet, and the air supply velocity of each velocity sensor detection is averaged.
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| CN106871357A (en) * | 2017-02-28 | 2017-06-20 | 青岛海尔空调电子有限公司 | A kind of air-conditioner managing device and the air-conditioner with the managing device |
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