CN113137712A - Metering method for power consumption of electronic expansion valve and air conditioner - Google Patents
Metering method for power consumption of electronic expansion valve and air conditioner Download PDFInfo
- Publication number
- CN113137712A CN113137712A CN202110377755.3A CN202110377755A CN113137712A CN 113137712 A CN113137712 A CN 113137712A CN 202110377755 A CN202110377755 A CN 202110377755A CN 113137712 A CN113137712 A CN 113137712A
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- expansion valve
- electronic expansion
- air conditioner
- electric quantity
- power consumption
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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
- F24F11/46—Improving electric energy efficiency or saving
- F24F11/47—Responding to energy costs
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a method for metering the power consumption of an electronic expansion valve and an air conditioner, comprising the following steps: counting the accumulated adjustment steps of the electronic expansion valve within a preset period of time; and calculating the product of the counted accumulated adjustment step number and the preset single-step average electric quantity to obtain the electric quantity generated by the action of the electronic expansion valve within a preset time. According to the invention, the electric quantity generated by multiple actions of the electronic expansion valve within the preset time is directly obtained by presetting the single-step average electric quantity in advance and directly obtaining the accumulated adjustment step number. The internal and external machines of the air conditioner directly obtain the electric quantity generated in the adjustment process of the electronic expansion valve after communication, and the opening time of the electronic expansion valve is determined without judging the opening and closing state of the electronic expansion valve. The problem that the electric quantity metering error of the electronic expansion valve is large due to frequent starting and stopping of the electronic expansion valve in the prior art is effectively solved.
Description
Technical Field
The invention relates to the field of air conditioner control, in particular to a method for improving the electric quantity metering precision of an electronic expansion valve and an air conditioner.
Background
The multi-split air conditioner can calculate the electric quantity by itself, wherein the calculation comprises the calculation of the electric quantity of the electronic expansion valve. The method for calculating the electric quantity of the electronic expansion valve is specifically carried out by Q = P1 × T. The power P1 of the electronic expansion valve depends on the result P1 calculated after the experiment, and T is the time interval T of communication between the internal machine and the external machine. Due to the existence of such a time interval T during the communication between the internal and external machines, the power is delivered with an equal time interval T. This time interval T results in the power delivered by the indoor unit being received by the outdoor unit only at time T (assuming time interval 0, T). If the electronic expansion valve is in a closed state at time T and is in an open state during the time period [0, (T-1) ], the electronic expansion valve will be treated as a stop state, resulting in an error. If the electronic expansion valve is in a frequent on-off state, the electric quantity generated by the electronic expansion valve will also change, and meanwhile, the error of the calculated electric quantity of the electronic expansion valve will further increase, so that the electric quantity of the electronic expansion valve cannot be effectively acquired.
Disclosure of Invention
The invention provides a method for measuring power consumption of an electronic expansion valve and an air conditioner, aiming at solving the technical problem of large error in calculation of electric quantity of the electronic expansion valve in the prior art.
The technical scheme adopted by the invention is as follows:
the invention provides a method for metering the power consumption of an electronic expansion valve, which comprises the following steps:
counting the accumulated adjustment steps of the electronic expansion valve within a preset period of time;
and calculating the product of the counted accumulated adjustment step number in the preset time and the preset single-step average electric quantity to obtain the electric quantity generated by the action of the electronic expansion valve in the preset time.
Further, the preset time is the communication interval time between the air conditioner external unit and the air conditioner indoor unit.
Preferably, the air conditioner internal unit counts the accumulated adjustment steps of the electronic expansion valve, and the air conditioner external unit receives the accumulated adjustment steps to calculate the electric quantity generated by the action of the electronic expansion valve in each preset period of time.
Further, after the air conditioner is started, the accumulated adjustment step number is obtained every preset time.
Furthermore, the accumulated electric quantity of the electronic expansion valve is updated once every preset time after the air conditioner is started.
The preset single-step average electric quantity obtaining method comprises the following steps: and obtaining the total electric quantity corresponding to the accumulated adjustment step number of the electronic expansion valve for multiple times to calculate single-step average electric quantity, and averaging after removing the maximum value and the minimum value in all the obtained single-step average electric quantities to obtain preset single-step average electric quantity.
The invention also provides an air conditioner, and the power consumption of the electronic expansion valve is counted by using the method for metering the power consumption of the electronic expansion valve.
Preferably, the air conditioner is a multi-split air conditioner.
Furthermore, the indoor unit of the air conditioner comprises a statistic module for counting the accumulated adjustment steps of the electronic expansion valve.
Further, an outdoor unit of an air conditioner includes: and the electric quantity metering module is used for calculating the power consumption of the electronic expansion valve according to the accumulated adjustment steps of the electronic expansion valve transmitted by the indoor unit.
Compared with the prior art, the method and the device have the advantages that the single-step average electric quantity is preset in advance, and the accumulated adjustment step number is directly obtained, so that the electric quantity generated by multiple actions of the electronic expansion valve within the preset time can be obtained. The electric quantity generated in the adjustment process of the electronic expansion valve is directly acquired after the communication between the internal machine and the external machine of the air conditioner, and the opening time of the electronic expansion valve is determined without judging the opening and closing state of the electronic expansion valve. The problem that the electric quantity metering error of the electronic expansion valve is large due to frequent starting and stopping of the electronic expansion valve in the prior art is effectively solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a flow chart in an embodiment of the present invention.
FIG. 2 is a block diagram of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The principles and construction of the present invention will be described in detail below with reference to the drawings and examples.
The conventional electronic expansion valve power amount is calculated by Q = P1 × T. The power P1 of the electronic expansion valve depends on the result P1 calculated after the experiment. T is the time interval T of communication between the internal machine and the external machine. The inner machine transmits power, and the outer machine calculates electric quantity. Due to the existence of such a time interval T during the communication between the internal and external machines, the power is delivered with an equal time interval T. This time interval T results in the power delivered by the indoor unit being received by the outdoor unit only at time T (assuming time interval 0, T). If the electronic expansion valve is in a closed state at time T and is in an open state during the time period [0, (T-1) ], the electronic expansion valve will be treated as a stop state, resulting in an error. If the electronic expansion valve is frequently started and stopped and the working state is repeated for many times, the error is enlarged, and the accuracy of electric quantity metering is greatly reduced.
As shown in fig. 1, the present invention provides a method for measuring power consumption of an electronic expansion valve, comprising the steps of: acquiring the accumulated adjustment step number of the electronic expansion valve once every preset time interval; and after the accumulated adjustment step number is obtained, calculating the product of the accumulated adjustment step number and the preset single-step average electric quantity, so that the electric quantity generated by the multiple actions of the electronic expansion valve within the preset time can be obtained. The internal and external machines of the air conditioner directly acquire the electric quantity generated in the adjustment process of the electronic expansion valve in the communication process, and the opening time of the electronic expansion valve is determined without judging the opening and closing state of the electronic expansion valve. And the accumulated electric quantity of the electronic expansion valve can be automatically updated at preset time intervals. The problem that the electric quantity metering error of the electronic expansion valve is large due to frequent starting and stopping of the electronic expansion valve in the prior art is solved.
The preset time can be the communication interval time between the air conditioner external unit and the air conditioner internal unit, or can be more than or less than the communication interval time, and the communication interval time is set to enable the electric quantity of the electronic expansion valve to be updated at the first time, so that the delay of the electric quantity updating is avoided.
In a specific embodiment, the air conditioner internal unit obtains the accumulated adjustment step number of the electronic expansion valve, communicates with the air conditioner external unit at preset time intervals, and sends the obtained accumulated adjustment step number to the air conditioner external unit to calculate the electric quantity generated by the electronic expansion valve within the preset time.
The preset single-step average electric quantity can be obtained through tests, and the specific obtaining method comprises the following steps: and recording the total electric quantity of the electronic expansion valve under the preset adjusting step number, and calculating the single-step average electric quantity. And repeating the step for multiple times, namely sampling the electric quantity and the step number for multiple times to obtain multiple single-step average electric quantities, and removing the maximum value and the minimum value in the multiple single-step average electric quantities to obtain an average value, so that the more accurate preset single-step average electric quantity can be obtained.
The invention also provides an air conditioner, and the electric quantity generated by the electronic expansion valve in the running process of the air conditioner is recorded by using the method for measuring the electric consumption of the electronic expansion valve.
In a specific embodiment, as shown in fig. 2, the air conditioner is a multi-split air conditioner. The air conditioner internal unit and the air conditioner external unit are both provided with controllers, namely MCUs. The electronic expansion valve is installed on the air conditioner internal unit, and the air conditioner internal unit further comprises a counting module for counting the accumulated adjustment steps of the electronic expansion valve. The air conditioner outdoor unit further comprises an electric quantity metering module for controlling and calculating the electric quantity through the controller, and the electric quantity generated by the electronic expansion valve can be recorded.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A method for metering the power consumption of an electronic expansion valve is characterized by comprising the following steps:
counting the accumulated adjustment steps of the electronic expansion valve within a preset period of time;
and calculating the product of the counted accumulated adjustment step number and the preset single-step average electric quantity to obtain the electric quantity generated by the action of the electronic expansion valve within a preset time.
2. The method as claimed in claim 1, wherein the predetermined time is a communication interval between an external unit and an internal unit of an air conditioner.
3. The method for measuring the power consumption of an electronic expansion valve according to claim 2, wherein the air conditioner internal unit counts the cumulative adjustment steps of the electronic expansion valve, and the air conditioner external unit receives the cumulative adjustment steps to calculate the power generated by the electronic expansion valve in each preset period of time.
4. The method as claimed in claim 1, wherein the step of adjusting is performed once every predetermined time after the air conditioner is turned on.
5. The method as claimed in claim 1, wherein the accumulated electric power of the electronic expansion valve is updated every predetermined time after the air conditioner is turned on.
6. The method for measuring the power consumption of an electronic expansion valve according to claim 1, wherein the preset single-step average power is obtained by the following steps: and obtaining the total electric quantity corresponding to the accumulated adjustment step number of the electronic expansion valve for multiple times to calculate single-step average electric quantity, and averaging after removing the maximum value and the minimum value in all the obtained single-step average electric quantities to obtain preset single-step average electric quantity.
7. An air conditioner, characterized in that the method for measuring the power consumption of an electronic expansion valve according to any one of claims 1 to 6 is used for counting the power consumption of the electronic expansion valve.
8. The air conditioner according to claim 7, wherein the air conditioner is a multi-split air conditioner.
9. The air conditioner according to claim 8, wherein the air conditioner indoor unit comprises a statistic module for counting the cumulative adjustment steps of the electronic expansion valve.
10. The air conditioner of claim 8, wherein the outdoor unit comprises: and the electric quantity metering module is used for calculating the power consumption of the electronic expansion valve according to the accumulated adjustment steps of the electronic expansion valve transmitted by the indoor unit.
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| CN202110377755.3A CN113137712B (en) | 2021-04-08 | 2021-04-08 | Metering method for power consumption of electronic expansion valve and air conditioner |
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| CN202110377755.3A CN113137712B (en) | 2021-04-08 | 2021-04-08 | Metering method for power consumption of electronic expansion valve and air conditioner |
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| CN113137712B CN113137712B (en) | 2022-03-18 |
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