CN104776944A - Air conditioner heat exchange amount detection method and device - Google Patents

Air conditioner heat exchange amount detection method and device Download PDF

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Publication number
CN104776944A
CN104776944A CN201510184652.XA CN201510184652A CN104776944A CN 104776944 A CN104776944 A CN 104776944A CN 201510184652 A CN201510184652 A CN 201510184652A CN 104776944 A CN104776944 A CN 104776944A
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China
Prior art keywords
air
air conditioner
heat exchange
described air
temperature
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CN201510184652.XA
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Inventor
杨亚新
戚文端
陈明瑜
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Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
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Midea Group Co Ltd
Guangdong Midea Refrigeration Equipment Co Ltd
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Priority to CN201510184652.XA priority Critical patent/CN104776944A/en
Publication of CN104776944A publication Critical patent/CN104776944A/en
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Abstract

The invention discloses an air conditioner heat exchange amount detection method. The air conditioner heat exchange amount detection method comprises the following steps: acquiring difference of unit mass air enthalpies between an air inlet and an air outlet of an indoor unit of the air conditioner; acquiring the air output of the indoor unit; calculating the heat exchange amount of the air conditioner according to the difference of unit mass air enthalpies and the air output of the indoor unit. The invention further discloses an air conditioner heat exchange amount detection device. The air conditioner heat exchange amount detection method and the air conditioner heat exchange amount detection device disclosed by the invention can reduce the heat exchange amount testing cost of the air conditioner.

Description

Air conditioner heat exchange quantity measuring method and device
Technical field
The present invention relates to air conditioner technical field, particularly relate to air conditioner heat exchange quantity measuring method and device.
Background technology
Along with the development of domestic air conditioner technology, convertible frequency air-conditioner obtains to be popularized more and more widely.Transducer air conditioning has the advantages such as energy-conservation, comfortable relative to air-conditioner with fixed frequency.Air conditioner manufacturer conveniently user selects the air conditioner that is suitable for, produces the air conditioner having various heat exchange ability (refrigerating/heating ability).Such as, the concepts such as 26 machines, 32 machines and 50 machines, naming rule is wherein all the specified refrigerating capacity name with air conditioner, and as 26 machines, specified exactly refrigerating capacity is 2600W.In prior art, usually adopt thermal equilibrium Lab Test Method to carry out the exchange capability of heat of testing air conditioner device, it needs to build specific test environment, just can complete the test of air conditioner heat exchange amount under this test environment.Common, building described specific test environment needs capital fund up to a million, causes air conditioner in prior art to change heat amount test cost higher.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of air conditioner heat exchange quantity measuring method and device, is intended to reduce the cost that air conditioner changes heat amount test.
For achieving the above object, the invention provides a kind of air conditioner heat exchange quantity measuring method, this air conditioner heat exchange quantity measuring method comprises the following steps:
The unit mass air enthalpy obtaining the air inlet of indoor set of air conditioner and air outlet is poor;
Obtain the air output of described indoor set;
The heat exchange amount of air conditioner according to the calculation of air quantity of described unit mass air enthalpy difference and described indoor set.
Preferably, the step of the air inlet of the indoor set of described acquisition air conditioner and the unit mass air enthalpy difference of air outlet comprises:
Obtain temperature and the relative humidity of described air inlet and described air outlet;
According to temperature and the relative humidity of the described air inlet got and described air outlet, calculate described unit mass air enthalpy poor.
Preferably, the described air inlet of described acquisition and the temperature of described air outlet and the step of relative humidity comprise:
Obtain and be arranged at the temperature value and rh value that multiple temperature sensor of described air inlet and described air outlet and humidity sensor return;
The mean value of the temperature value returned by the multiple temperature sensors being arranged on described air inlet is as the temperature of described air inlet, the mean value of the temperature value returned by the multiple temperature sensors being arranged on described air outlet is as the temperature of described air outlet, the mean value of the rh value returned by the multiple humidity sensors being arranged on described air inlet is as the relative humidity of described air inlet, and the mean value of the rh value returned by the multiple humidity sensors being arranged on described air outlet is as the relative humidity of described air outlet.
Preferably, the step of the air output of the described indoor set of described acquisition comprises:
Obtain the current rotating speed of wind wheel in described indoor set;
Obtain the mode of operation that described air conditioner is current, wherein, described mode of operation comprises refrigeration mode and heating mode;
The current rotating speed of the calculating parameter corresponding based on current operation mode and described wind wheel calculates the air output of described indoor set.
Preferably, after the step of the heat exchange amount of described air conditioner according to the calculation of air quantity of described unit mass air enthalpy difference and described indoor set, described air conditioner heat exchange quantity measuring method also comprises:
Show the heat exchange amount of described air conditioner.
In addition, for achieving the above object, the present invention also provides a kind of air conditioner heat exchange amount detecting device, and this air conditioner heat exchange amount detecting device comprises:
First acquisition module, the unit mass air enthalpy for the air inlet and air outlet that obtain the indoor set of air conditioner is poor;
Second acquisition module, for obtaining the air output of described indoor set;
Computing module, for the heat exchange amount of air conditioner according to the calculation of air quantity of described unit mass air enthalpy difference and described indoor set.
Preferably, described first acquisition module comprises:
Obtain submodule, for obtaining temperature and the relative humidity of described air inlet and described air outlet;
Calculating sub module, for according to the temperature of the described air inlet that gets and described air outlet and relative humidity, calculates described unit mass air enthalpy poor.
Preferably, described acquisition submodule comprises:
Receiving element, for obtaining the temperature value and rh value that multiple temperature sensor of being arranged at described air inlet and described air outlet and humidity sensor return;
Processing unit, for the mean value of temperature value that the multiple temperature sensors being arranged on described air inlet the are returned temperature as described air inlet, the mean value of the temperature value returned by the multiple temperature sensors being arranged on described air outlet is as the temperature of described air outlet, the mean value of the rh value returned by the multiple humidity sensors being arranged on described air inlet is as the relative humidity of described air inlet, and the mean value of the rh value returned by the multiple humidity sensors being arranged on described air outlet is as the relative humidity of described air outlet.
Preferably, described second acquisition module comprises:
First acquiring unit, for obtaining the current rotating speed of wind wheel in described indoor set;
Second acquisition unit, for obtaining the current mode of operation of described air conditioner, wherein, described mode of operation comprises refrigeration mode and heating mode;
Computing unit, for calculating the air output of described indoor set based on the current rotating speed of calculating parameter corresponding to current operation mode and described wind wheel.
Preferably, described air conditioner heat exchange amount detecting device also comprises display module, for showing the heat exchange amount of described air conditioner.
The present invention is poor by the unit mass air enthalpy of the air inlet and air outlet that obtain the indoor set of air conditioner; Obtain the air output of described indoor set; The heat exchange amount of air conditioner according to the calculation of air quantity of described unit mass air enthalpy difference and described indoor set.Compared to prior art, avoid building of fc-specific test FC environment, thus the present invention can reduce the cost that air conditioner changes heat amount test.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of air conditioner heat exchange quantity measuring method first embodiment of the present invention;
Fig. 2 is the refinement schematic flow sheet of step S10 in Fig. 1;
Fig. 3 is the refinement schematic flow sheet of step S20 in Fig. 1;
Fig. 4 is the high-level schematic functional block diagram of air conditioner heat exchange amount detecting device first embodiment of the present invention;
Fig. 5 is the refinement high-level schematic functional block diagram of the first acquisition module in Fig. 4;
Fig. 6 is the refinement high-level schematic functional block diagram of the second acquisition module in Fig. 4.
The object of the invention realization, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of air conditioner heat exchange quantity measuring method, with reference to Fig. 1, in the first embodiment of air conditioner heat exchange quantity measuring method of the present invention, this air conditioner heat exchange quantity measuring method comprises:
Step S10, the unit mass air enthalpy obtaining the air inlet of indoor set of air conditioner and air outlet is poor;
Well-known, because the line frequency of civil power is substantially constant, the compressor rotary speed of traditional air-conditioner with fixed frequency is also substantially constant, relies on it constantly " to drive, stop " compressor to adjust indoor temperature, one open one stop between easily cause indoor temperature sometimes hot and sometimes cold, and more electric energy can be consumed.And by comparison, transducer air conditioning changes the line frequency of compressor by frequency converter, regulate the rotating speed of compressor.Rely on the speed of compressor rotary speed to reach the object controlling indoor temperature, energy consumption is low, fluctuations in indoor temperature is little, and its comfort level improves greatly.To sum up, operationally, heat exchange amount is substantially constant for traditional air-conditioner with fixed frequency; And transducer air conditioning operationally, its heat exchange amount is with indoor temperature real-time change.In addition, owing to the present invention is to provide a kind of air conditioner heat exchange quantity measuring method of low cost, can be applied in household inverter air conditioner.Such as, transducer air conditioning can be made to detect in real time and show its heat exchange amount, better using transducer air conditioning for user.
It should be noted that in the artificial atmosphere process of domestic air conditioner, the pressure change of air is very little, and the hot material properties affect of pressure to air can be ignored, and can regard the artificial atmosphere process of air conditioner as constant pressure process.Therefore, the heat exchange amount of air conditioner is measured by the enthalpy change of air conditioner air inlet and air outlet: Q=H enter-H go out(1), wherein Q represents the heat exchange amount of air conditioner, H enterrepresent the enthalpy of air intake, H go outrepresent the enthalpy of air-out.
In the present embodiment, the unit mass air enthalpy first obtaining the air inlet of the indoor set of air conditioner and air outlet is poor.Particularly, with reference to Fig. 2, above-mentioned steps S10 comprises:
Step S11, obtains temperature and the relative humidity of described air inlet and described air outlet;
In the present embodiment, described air inlet and described air outlet place are provided with temperature sensor and humidity sensor, for gathering temperature and the relative humidity of described air inlet and described air outlet.Such as, platinum resistance temperature sensor can be adopted as described temperature sensor, electric resistance moisture sensor can be adopted as described humidity sensor.
It will be appreciated by persons skilled in the art that and also can adopt the temperature sensor of other types or the humidity sensor of other types,
Step S12, according to temperature and the relative humidity of the described air inlet got and described air outlet, calculates described unit mass air enthalpy poor.
It should be noted that the change of air enthalpy, a part is from the change of air self-temperature, and another part changes from the latent heat of vaporization of moisture in air.The specific heat at constant pressure of soft air can be expressed as:
c p=c p,a+c p,w·W (2)
Wherein, C prepresent the specific heat at constant pressure of soft air, c p,arepresenting the specific heat at constant pressure of dry air, is 1.005kJ/kg DEG C, c p,wrepresent the specific heat at constant pressure of water vapour, for 1.86kJ/kg DEG C, W represent the water capacity of soft air.
Unit mass humid air property value difference q=c can be drawn by formula (1) (2) pΔ T+ Δ Wr 0(3), wherein, Δ T represents the temperature gap of described air inlet and described air outlet, r 0for the water vapour latent heat of vaporization, be 2501kJ/kg, Δ W is the soft air water capacity difference of described air inlet and described air outlet, water capacity W and relative humidity relation can be expressed as:
Wherein, for the relative humidity of described air inlet or the relative humidity of described air outlet, p is standard atmospheric pressure value, is 101.325kPa, p wsfor the saturated vapor partial pressure of air, when temperature is more than 0 DEG C, p wsbe calculated as follows:
lg p ws = 7.19621 - 1730.63 233.426 + T - - - ( 5 )
Wherein, T is the temperature of described air inlet or the temperature of described air outlet, and unit is DEG C.
According to formula (3), (4) and (5), can show that the unit mass air enthalpy difference of described air inlet and described air outlet is:
Q=c p(T go out-T enter)+(W enter-W go out) r 0(6)
Wherein, q represents that above-mentioned unit mass air enthalpy is poor, and Cp represents the specific heat at constant pressure of soft air, T go outrepresent the temperature of described air outlet, T enterrepresent the temperature of described air inlet, W enterrepresent the air humidity content of described air inlet, W go outrepresent the air humidity content of described air outlet, r 0representing the water vapour latent heat of vaporization, is 2501kJ/kg.
To sum up, when getting described air inlet, the temperature of described air outlet and relative humidity, according to above-mentioned formula (4), (5) and (6), and the specific heat at constant pressure c of dry air p,a, water vapour specific heat at constant pressure c p,w, standard atmospheric pressure value p, water vapour latent heat of vaporization r 0described unit mass air enthalpy difference q can be calculated Deng calculating parameter.
Step S20, obtains the air output of described indoor set;
In the present embodiment, with reference to Fig. 3, above-mentioned steps S20 comprises:
Step S21, obtains the current rotating speed of wind wheel in described indoor set;
In the present embodiment, first obtain the current rotating speed of wind wheel in described indoor set, such as, the current rotating speed of described wind wheel can be calculated according to the feedback signal of wind wheel.Be understandable that, acquisition can also be detected in real time by the speed probe that wind wheel is external.
Step S22, obtains the mode of operation that described air conditioner is current, and wherein, described mode of operation comprises refrigeration mode and heating mode;
It should be noted that existing air conditioner generally has plurality of operating modes, comprise refrigeration mode, heating mode, ventilation state and remove wet condition etc.Because the compressor of air conditioner is only in air conditioner refrigeration or work when heating, namely air conditioner only carries out heat exchange when being positioned at refrigeration mode or heating mode.In the present embodiment, can determine according to the feedback signal of described air conditioner the mode of operation that described air conditioner is current.
It will be appreciated by persons skilled in the art that when air conditioner is not in heating mode or refrigeration mode, such as, air supply pattern and dehumidification mode, without the need to carrying out the test of air conditioner heat exchange amount, to save energy consumption.
Step S23, the current rotating speed of the calculating parameter corresponding based on current operation mode and described wind wheel calculates the air output of described indoor set.
It should be noted that after duct structure of indoor set is determined, the rotating speed linearly variation relation of the air output of described indoor set and the wind wheel of described indoor set.The air output of described indoor set can be expressed as:
φ=kn+φ 0(7)
Wherein, φ represents the air output of described indoor set, and k represents air volume coefficient, and n represents the current rotating speed of described wind wheel, φ 0representing wind wheel modified value, is constant.
In the present embodiment, the impact of the mode of operation that above-mentioned air volume coefficient is subject to the wind wheel of indoor set, air channel structure and air conditioner current is a constant.When air conditioner is operated in refrigeration mode, air volume coefficient is expressed as k cold; When air conditioner is operated in heating mode, air volume coefficient is expressed as k heat, k coldand k heatall draw in the Air conditioner design stage.
To sum up, after the mode of operation of air conditioner confirms, the air volume coefficient corresponding based on current operation mode and wind wheel modified value (calculating parameter), and get the current rotating speed of described wind wheel, substitute into the air output that formula (7) can calculate described indoor set.
It will be appreciated by persons skilled in the art that and air quantity collector can also be set at described air outlet place, gathered the air output of described indoor set by described air quantity collector.
Step S30, the heat exchange amount of air conditioner according to the calculation of air quantity of described unit mass air enthalpy difference and described indoor set.
In the present embodiment, the heat exchange amount of described air conditioner can be expressed as:
Q=(ρ·φ)·q (8)
Wherein, Q represents the heat exchange amount of described air conditioner, and ρ represents the density of air, is 1.2kg/m 3, φ represents the air output of described indoor set, and q represents that described unit mass air enthalpy is poor.
By the air output φ of the poor q of the aforementioned described unit mass air enthalpy got, described indoor set, and the density p of air, substitute into the heat exchange amount that formula (8) can calculate air conditioner.Such as, the specified refrigerating capacity of KFR-26GW type air conditioner is 2600W, fluctuation range is 300-4000W, based on such scheme, the data of certain moment collection KFR-26GW type air conditioner, when the mode of operation that described air conditioner is current is heating mode, the heat exchange amount calculating this air conditioner is 2568 watts.
It will be appreciated by persons skilled in the art that when air conditioner is in heating mode, the heating capacity of described heat exchange amount and air conditioner; When air conditioner is in refrigeration mode, the refrigerating capacity of described heat exchange amount and air conditioner.
The air conditioner heat exchange quantity measuring method that the embodiment of the present invention proposes, poor by the unit mass air enthalpy of the air inlet and air outlet that obtain the indoor set of air conditioner; Obtain the air output of described indoor set; The heat exchange amount of air conditioner according to the calculation of air quantity of described unit mass air enthalpy difference and described indoor set.Compared to prior art, avoid building of fc-specific test FC environment, thus the present invention can reduce the cost that air conditioner changes heat amount test.
Further, based on the first embodiment, propose the second embodiment of air conditioner heat exchange quantity measuring method of the present invention, in the present embodiment, above-mentioned steps S11 comprises:
Obtain and be arranged at the temperature value and rh value that multiple temperature sensor of described air inlet and described air outlet and humidity sensor return;
The mean value of the temperature value returned by the multiple temperature sensors being arranged on described air inlet is as the temperature of described air inlet, the mean value of the temperature value returned by the multiple temperature sensors being arranged on described air outlet is as the temperature of described air outlet, the mean value of the rh value returned by the multiple humidity sensors being arranged on described air inlet is as the relative humidity of described air inlet, and the mean value of the rh value returned by the multiple humidity sensors being arranged on described air outlet is as the relative humidity of described air outlet.
Should be noted that, the difference of the present embodiment and the first embodiment is, in the present embodiment, described air inlet and described air outlet place are provided with multiple temperature sensor and humidity sensor, for gathering temperature and the relative humidity of described air inlet and described air outlet.Such as, described air inlet is provided with 3 platinum resistance temperature sensors, after getting the temperature value that described 3 platinum resistance temperature sensors return, using the temperature of its mean value as described air inlet.
It will be understood by those skilled in the art that, the quantity of sensor is more, the degree of accuracy gathered is higher, more can accurately detect temperature and the relative humidity of described air inlet and described air outlet, thus effectively can promote the accuracy that air conditioner changes heat measurement.
Further, in first embodiment or the second embodiment of air conditioner heat exchange quantity measuring method of the present invention, after above-mentioned steps S30, described air conditioner heat exchange quantity measuring method also comprises:
Show the heat exchange amount of described air conditioner.
It should be noted that based on such scheme, when air conditioner is operated in heating mode, the heat exchange amount Q calculated on the occasion of; When air conditioner is operated in refrigeration mode, the heat exchange amount Q calculated is negative value.In the present embodiment, after calculating the heat exchange amount of air conditioner, the mode of operation current according to air conditioner shows the heat exchange amount of described air conditioner, such as, when the heat exchange amount Q calculated on the occasion of time, display: heating capacity XX watt; When the heat exchange amount Q calculated is negative value, display: refrigerating capacity XX watt.The embodiment of the present invention, by after calculating the heat exchange amount of air conditioner, shows the heat exchange amount of described air conditioner, user can be made to understand the duty of air conditioner in real time, thus better using air-condition device.
The present invention also provides a kind of air conditioner heat exchange amount detecting device, and with reference to Fig. 4, in the first embodiment of air conditioner heat exchange amount detecting device of the present invention, described air conditioner heat exchange amount detecting device comprises:
First acquisition module 10, for the air inlet of the indoor set for obtaining air conditioner and the unit mass air enthalpy of air outlet poor;
Well-known, because the line frequency of civil power is substantially constant, the compressor rotary speed of traditional air-conditioner with fixed frequency is also substantially constant, relies on it constantly " to drive, stop " compressor to adjust indoor temperature, one open one stop between easily cause indoor temperature sometimes hot and sometimes cold, and more electric energy can be consumed.And by comparison, transducer air conditioning changes the line frequency of compressor by frequency converter, regulate the rotating speed of compressor.Rely on the speed of compressor rotary speed to reach the object controlling indoor temperature, energy consumption is low, fluctuations in indoor temperature is little, and its comfort level improves greatly.To sum up, operationally, heat exchange amount is substantially constant for traditional air-conditioner with fixed frequency; And transducer air conditioning operationally, its heat exchange amount is with indoor temperature real-time change.In addition, owing to the present invention is to provide a kind of air conditioner heat exchange amount detecting device of low cost, can be applied in household inverter air conditioner.Such as, transducer air conditioning can be made to detect in real time and show its heat exchange amount, better using transducer air conditioning for user.
It should be noted that in the artificial atmosphere process of domestic air conditioner, the pressure change of air is very little, and the hot material properties affect of pressure to air can be ignored, and can regard the artificial atmosphere process of air conditioner as constant pressure process.Therefore, the heat exchange amount of air conditioner is measured by the enthalpy change of air conditioner air inlet and air outlet: Q=H enter-H go out(1), wherein Q represents the heat exchange amount of air conditioner, H enterrepresent the enthalpy of air intake, H go outrepresent the enthalpy of air-out.
In the present embodiment, the unit mass air enthalpy that first described first acquisition module 10 obtains the air inlet of the indoor set of air conditioner and air outlet is poor.Particularly, with reference to Fig. 5, described first acquisition module 10 comprises:
Obtain submodule 11, for obtaining temperature and the relative humidity of described air inlet and described air outlet;
In the present embodiment, described air inlet and described air outlet place are provided with temperature sensor and humidity sensor, obtain submodule 11 for gathering the temperature of described air inlet and described air outlet and relative humidity and the data collected being sent to.Such as, platinum resistance temperature sensor can be adopted as described temperature sensor, electric resistance moisture sensor can be adopted as described humidity sensor.
It will be appreciated by persons skilled in the art that and also can adopt the temperature sensor of other types or the humidity sensor of other types,
Calculating sub module 12, for according to the temperature of the described air inlet that gets and described air outlet and relative humidity, calculates described unit mass air enthalpy poor.
It should be noted that the change of air enthalpy, a part is from the change of air self-temperature, and another part changes from the latent heat of vaporization of moisture in air.The specific heat at constant pressure of soft air can be expressed as:
c p=c p,a+c p,w·W (2)
Wherein, C prepresent the specific heat at constant pressure of soft air, c p,arepresenting the specific heat at constant pressure of dry air, is 1.005kJ/kg DEG C, c p,wrepresent the specific heat at constant pressure of water vapour, for 1.86kJ/kg DEG C, W represent the water capacity of soft air.
Unit mass humid air property value difference q=c can be drawn by formula (1) (2) pΔ T+ Δ Wr 0(3), wherein, Δ T represents the temperature gap of described air inlet and described air outlet, r 0for the water vapour latent heat of vaporization, be 2501kJ/kg, Δ W is the soft air water capacity difference of described air inlet and described air outlet, water capacity W and relative humidity relation can be expressed as:
Wherein, for the relative humidity of described air inlet or the relative humidity of described air outlet, p is standard atmospheric pressure value, is 101.325kPa, p wsfor the saturated vapor partial pressure of air, when temperature is more than 0 DEG C, p wsbe calculated as follows:
lg p ws = 7.19621 - 1730.63 233.426 + T - - - ( 5 )
Wherein, T is the temperature of described air inlet or the temperature of described air outlet, and unit is DEG C.
According to formula (3), (4) and (5), can show that the unit mass air enthalpy difference of described air inlet and described air outlet is:
Q=c p(T go out-T enter)+(W enter-W go out) r 0(6)
Wherein, q represents that above-mentioned unit mass air enthalpy is poor, and Cp represents the specific heat at constant pressure of soft air, T go outrepresent the temperature of described air outlet, T enterrepresent the temperature of described air inlet, W enterrepresent the air humidity content of described air inlet, W go outrepresent the air humidity content of described air outlet, r 0representing the water vapour latent heat of vaporization, is 2501kJ/kg.
To sum up, when obtaining submodule 11 and getting described air inlet, the temperature of described air outlet and relative humidity, calculating sub module 12 is according to above-mentioned formula (4), (5) and (6), and the specific heat at constant pressure c of dry air p,a, water vapour specific heat at constant pressure c p,w, standard atmospheric pressure value p, water vapour latent heat of vaporization r 0described unit mass air enthalpy difference q can be calculated Deng calculating parameter.
Second acquisition module 20, for obtaining the air output of described indoor set;
In the present embodiment, with reference to Fig. 6, described second acquisition module 20 comprises:
First acquiring unit 21, for obtaining the current rotating speed of wind wheel in described indoor set;
In the present embodiment, first the first acquiring unit 21 obtains the current rotating speed of wind wheel in described indoor set, such as, can calculate the current rotating speed of described wind wheel according to the feedback signal of wind wheel.Be understandable that, acquisition can also be detected in real time by the speed probe that wind wheel is external.
Second acquisition unit 22, for obtaining the current mode of operation of described air conditioner, wherein, described mode of operation comprises refrigeration mode and heating mode;
It should be noted that existing air conditioner generally has plurality of operating modes, comprise refrigeration mode, heating mode, ventilation state and remove wet condition etc.Because the compressor of air conditioner is only in air conditioner refrigeration or work when heating, namely air conditioner only carries out heat exchange when being positioned at refrigeration mode or heating mode.In the present embodiment, second acquisition unit 22 can determine according to the feedback signal of described air conditioner the mode of operation that described air conditioner is current.
It will be appreciated by persons skilled in the art that when air conditioner is not in heating mode or refrigeration mode, such as, air supply pattern and dehumidification mode, without the need to carrying out the test of air conditioner heat exchange amount, to save energy consumption.
Computing unit 23, for calculating the air output of described indoor set based on the current rotating speed of calculating parameter corresponding to current operation mode and described wind wheel.
It should be noted that after duct structure of indoor set is determined, the rotating speed linearly variation relation of the air output of described indoor set and the wind wheel of described indoor set.The air output of described indoor set can be expressed as:
φ=kn+φ 0(7)
Wherein, φ represents the air output of described indoor set, and k represents air volume coefficient, and n represents the current rotating speed of described wind wheel, φ 0representing wind wheel modified value, is constant.
In the present embodiment, the impact of the mode of operation that above-mentioned air volume coefficient is subject to the wind wheel of indoor set, air channel structure and air conditioner current is a constant.When air conditioner is operated in refrigeration mode, air volume coefficient is expressed as k cold;when air conditioner is operated in heating mode, air volume coefficient is expressed as k heat, k coldand k heatall draw in the Air conditioner design stage.
To sum up, confirm the mode of operation of air conditioner at second acquisition unit 22 after, computing unit 23 is based on air volume coefficient corresponding to current operation mode and wind wheel modified value (calculating parameter), and first acquiring unit 21 get the current rotating speed of described wind wheel, substitute into the air output that formula (7) can calculate described indoor set.
It will be appreciated by persons skilled in the art that and air quantity collector can also be set at described air outlet place, gathered the air output of described indoor set by described air quantity collector.
Computing module 30, for the heat exchange amount of air conditioner according to the calculation of air quantity of described unit mass air enthalpy difference and described indoor set.
In the present embodiment, the heat exchange amount of described air conditioner can be expressed as:
Q=(ρ·φ)·q (8)
Wherein, Q represents the heat exchange amount of described air conditioner, and ρ represents the density of air, is 1.2kg/m 3, φ represents the air output of described indoor set, and q represents that described unit mass air enthalpy is poor.
Computing module 30 is by the air output φ of the poor q of the aforementioned described unit mass air enthalpy got, described indoor set, and the density p of air, substitutes into the heat exchange amount that formula (8) can calculate air conditioner.Such as, the specified refrigerating capacity of KFR-26GW type air conditioner is 2600W, fluctuation range is 300-4000W, based on such scheme, the data of certain moment collection KFR-26GW type air conditioner, when the mode of operation that described air conditioner is current is heating mode, the heat exchange amount calculating this air conditioner is 2568 watts.
It will be appreciated by persons skilled in the art that when air conditioner is in heating mode, the heating capacity of described heat exchange amount and air conditioner; When air conditioner is in refrigeration mode, the refrigerating capacity of described heat exchange amount and air conditioner.
The air conditioner heat exchange amount detecting device that the embodiment of the present invention proposes, poor by the unit mass air enthalpy of the air inlet and air outlet that obtain the indoor set of air conditioner; Obtain the air output of described indoor set; The heat exchange amount of air conditioner according to the calculation of air quantity of described unit mass air enthalpy difference and described indoor set.Compared to prior art, avoid building of fc-specific test FC environment, thus the present invention can reduce the cost that air conditioner changes heat amount test.
Further, based on the first embodiment, propose the second embodiment of air conditioner heat exchange amount detecting device of the present invention, in the present embodiment, described acquisition submodule comprises:
Receiving element, for obtaining the temperature value and rh value that multiple temperature sensor of being arranged at described air inlet and described air outlet and humidity sensor return;
Processing unit, for the mean value of temperature value that the multiple temperature sensors being arranged on described air inlet the are returned temperature as described air inlet, the mean value of the temperature value returned by the multiple temperature sensors being arranged on described air outlet is as the temperature of described air outlet, the mean value of the rh value returned by the multiple humidity sensors being arranged on described air inlet is as the relative humidity of described air inlet, and the mean value of the rh value returned by the multiple humidity sensors being arranged on described air outlet is as the relative humidity of described air outlet.
Should be noted that, the difference of the present embodiment and the first embodiment is, in the present embodiment, described air inlet and described air outlet place are provided with multiple temperature sensor and humidity sensor, for gathering temperature and the relative humidity of described air inlet and described air outlet, and the data collected are sent to above-mentioned receiving element.Such as, described air inlet is provided with 3 platinum resistance temperature sensors, after receiving element gets the temperature value that described 3 platinum resistance temperature sensors return, forward it to processing unit, processing unit is using the temperature of its mean value as described air inlet.
It will be understood by those skilled in the art that, the quantity of sensor is more, the degree of accuracy gathered is higher, more can accurately detect temperature and the relative humidity of described air inlet, described air outlet, thus effectively can promote the accuracy that air conditioner changes heat measurement.
Further, in first embodiment or the second embodiment of air conditioner heat exchange quantity measuring method of the present invention, described air conditioner heat exchange amount detecting device also comprises display module, for showing the heat exchange amount of described air conditioner.
It should be noted that based on such scheme, when air conditioner is operated in heating mode, the heat exchange amount Q that computing module 30 calculates on the occasion of; When air conditioner is operated in refrigeration mode, the heat exchange amount Q that computing module 30 calculates is negative value.In the present embodiment, calculate the heat exchange amount of air conditioner at computing module 30 after, the display module mode of operation current according to air conditioner shows the heat exchange amount of described air conditioner, such as, when the heat exchange amount Q calculated on the occasion of time, display module show: heating capacity XX watt; When the heat exchange amount Q calculated is negative value, display module shows: refrigerating capacity XX watt.The embodiment of the present invention, by after calculating the heat exchange amount of air conditioner, shows the heat exchange amount of described air conditioner, user can be made to understand the duty of air conditioner in real time, thus better using air-condition device.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims (10)

1. an air conditioner heat exchange quantity measuring method, is characterized in that, described air conditioner heat exchange quantity measuring method comprises the following steps:
The unit mass air enthalpy obtaining the air inlet of indoor set of air conditioner and air outlet is poor;
Obtain the air output of described indoor set;
The heat exchange amount of air conditioner according to the calculation of air quantity of described unit mass air enthalpy difference and described indoor set.
2. air conditioner heat exchange quantity measuring method as claimed in claim 1, it is characterized in that, the step of the air inlet of the indoor set of described acquisition air conditioner and the unit mass air enthalpy difference of air outlet comprises:
Obtain temperature and the relative humidity of described air inlet and described air outlet;
According to temperature and the relative humidity of the described air inlet got and described air outlet, calculate described unit mass air enthalpy poor.
3. air conditioner heat exchange quantity measuring method as claimed in claim 2, is characterized in that, the described air inlet of described acquisition and the temperature of described air outlet and the step of relative humidity comprise:
Obtain and be arranged at the temperature value and rh value that multiple temperature sensor of described air inlet and described air outlet and humidity sensor return;
The mean value of the temperature value returned by the multiple temperature sensors being arranged on described air inlet is as the temperature of described air inlet, the mean value of the temperature value returned by the multiple temperature sensors being arranged on described air outlet is as the temperature of described air outlet, the mean value of the rh value returned by the multiple humidity sensors being arranged on described air inlet is as the relative humidity of described air inlet, and the mean value of the rh value returned by the multiple humidity sensors being arranged on described air outlet is as the relative humidity of described air outlet.
4. air conditioner heat exchange quantity measuring method as claimed in claim 1, it is characterized in that, the step of the air output of the described indoor set of described acquisition comprises:
Obtain the current rotating speed of wind wheel in described indoor set;
Obtain the mode of operation that described air conditioner is current, wherein, described mode of operation comprises refrigeration mode and heating mode;
The current rotating speed of the calculating parameter corresponding based on current operation mode and described wind wheel calculates the air output of described indoor set.
5. the air conditioner heat exchange quantity measuring method as described in any one of claim 1-4, it is characterized in that, after the step of the heat exchange amount of described air conditioner according to the calculation of air quantity of described unit mass air enthalpy difference and described indoor set, described air conditioner heat exchange quantity measuring method also comprises:
Show the heat exchange amount of described air conditioner.
6. an air conditioner heat exchange amount detecting device, is characterized in that, described air conditioner heat exchange amount detecting device comprises:
First acquisition module, the unit mass air enthalpy for the air inlet and air outlet that obtain the indoor set of air conditioner is poor;
Second acquisition module, for obtaining the air output of described indoor set;
Computing module, for the heat exchange amount of air conditioner according to the calculation of air quantity of described unit mass air enthalpy difference and described indoor set.
7. air conditioner heat exchange amount detecting device as claimed in claim 6, it is characterized in that, described first acquisition module comprises:
Obtain submodule, for obtaining temperature and the relative humidity of described air inlet and described air outlet;
Calculating sub module, for according to the temperature of the described air inlet that gets and described air outlet and relative humidity, calculates described unit mass air enthalpy poor.
8. air conditioner heat exchange amount detecting device as claimed in claim 6, it is characterized in that, described acquisition submodule comprises:
Receiving element, for obtaining the temperature value and rh value that multiple temperature sensor of being arranged at described air inlet and described air outlet and humidity sensor return;
Processing unit, for the mean value of temperature value that the multiple temperature sensors being arranged on described air inlet the are returned temperature as described air inlet, the mean value of the temperature value returned by the multiple temperature sensors being arranged on described air outlet is as the temperature of described air outlet, the mean value of the rh value returned by the multiple humidity sensors being arranged on described air inlet is as the relative humidity of described air inlet, and the mean value of the rh value returned by the multiple humidity sensors being arranged on described air outlet is as the relative humidity of described air outlet.
9. air conditioner heat exchange amount detecting device as claimed in claim 6, it is characterized in that, described second acquisition module comprises:
First acquiring unit, for obtaining the current rotating speed of wind wheel in described indoor set;
Second acquisition unit, for obtaining the current mode of operation of described air conditioner, wherein, described mode of operation comprises refrigeration mode and heating mode;
Computing unit, for calculating the air output of described indoor set based on the current rotating speed of calculating parameter corresponding to current operation mode and described wind wheel.
10. the air conditioner heat exchange amount detecting device as described in any one of claim 6-9, is characterized in that, described air conditioner heat exchange amount detecting device also comprises display module, for showing the heat exchange amount of described air conditioner.
CN201510184652.XA 2015-04-16 2015-04-16 Air conditioner heat exchange amount detection method and device Pending CN104776944A (en)

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CN112362197A (en) * 2020-11-11 2021-02-12 清华大学 Throttling device-based multi-online air-conditioning heat exchange heat metering method and device
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CN113465104A (en) * 2021-06-18 2021-10-01 青岛海尔空调电子有限公司 Control method and device for air conditioner and air conditioner
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CN105299845A (en) * 2015-11-20 2016-02-03 广东美的制冷设备有限公司 Virtual running parameter detecting method and device of air conditioner system
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CN108151227B (en) * 2017-12-25 2020-09-22 广东美的制冷设备有限公司 Heat pump air conditioner tail end energy calculating method and air conditioner
CN108151227A (en) * 2017-12-25 2018-06-12 广东美的制冷设备有限公司 The computational methods and air conditioner of heat pump air conditioner end energy
CN108267475A (en) * 2018-02-02 2018-07-10 上海市特种设备监督检验技术研究院 A kind of finned tube testing device for heat transferring performance based on Real-Time Atmospheric humidity and pressure
CN112443932A (en) * 2019-09-04 2021-03-05 青岛海尔空调电子有限公司 Refrigeration capacity determining method, refrigeration energy efficiency ratio determining method and fault reminding method
WO2021042793A1 (en) * 2019-09-04 2021-03-11 青岛海尔空调电子有限公司 Refrigeration capacity determination method, refrigeration energy efficiency ratio determination method, and failure notification method
CN110931913A (en) * 2019-11-18 2020-03-27 深圳新恒业电池科技有限公司 Battery temperature control method, battery temperature control device, battery temperature control apparatus, and medium
CN110931913B (en) * 2019-11-18 2021-05-25 创普斯(深圳)新能源科技有限公司 Battery temperature control method, battery temperature control device, battery temperature control apparatus, and medium
CN112362197A (en) * 2020-11-11 2021-02-12 清华大学 Throttling device-based multi-online air-conditioning heat exchange heat metering method and device
CN113465104A (en) * 2021-06-18 2021-10-01 青岛海尔空调电子有限公司 Control method and device for air conditioner and air conditioner
CN113669867A (en) * 2021-08-27 2021-11-19 万国数据服务有限公司 Method for displaying air volume, refrigerating capacity and real-time energy efficiency ratio of air conditioner in real time

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