阅读说明：本技术 压缩机功率及制冷设备电量的估算方法 (Method for estimating compressor power and refrigeration equipment electric quantity ) 是由 朱佳贝 方茂长 肖凌峰 汪猗吉 于有亮 唐华俊 于 2020-12-18 设计创作，主要内容包括：本发明公开了一种压缩机功率的估算方法,包括：根据制冷设备的工况及负载,对制冷设备的运行状态进行分类；统计不同制冷设备在各运行状态中压缩机在不同温度条件下压缩机转速、制冷设备的运行时间、相关温度变化当中的至少一种与压缩机的功率的对应关系；当制冷设备运行时根据所述对应关系对压缩机的功率进行估算。本发明可以大致估算出冰箱等制冷设备的用电量,为用户使用冰箱等提供有力支持,并且本发明的方法实用简单,不会导致用户的使用成本、维修成本增加。(The invention discloses a method for estimating the power of a compressor, which comprises the following steps: classifying the running state of the refrigeration equipment according to the working condition and the load of the refrigeration equipment; counting the corresponding relation between at least one of the compressor rotating speed, the refrigerating equipment running time and the related temperature change of the compressor under different temperature conditions and the compressor power of different refrigerating equipment in each running state; and estimating the power of the compressor according to the corresponding relation when the refrigeration equipment operates. The method can roughly estimate the power consumption of the refrigeration equipment such as the refrigerator and the like, provides powerful support for users to use the refrigerator and the like, is practical and simple, and cannot cause the increase of the use cost and the maintenance cost of the users.)

1. A method of estimating compressor power, comprising:

classifying the operation state of the refrigeration equipment;

counting the corresponding relation between at least one of the compressor rotating speed, the refrigerating equipment running time and the related temperature change of the compressor under different temperature conditions and the compressor power of different refrigerating equipment in each running state;

and estimating the power of the compressor according to the corresponding relation when the refrigeration equipment operates.

2. The method of estimating compressor power of claim 1 wherein when said refrigeration equipment is a refrigerator, the operating conditions are classified into a power-up condition, a steady state condition, a load condition and a defrost condition.

3. The method for estimating compressor power as set forth in claim 1 wherein when said refrigeration unit is an air conditioner, the operating conditions are divided into a power-on condition, a steady state and a defrost condition.

4. The method for estimating compressor power according to claim 2 or 3, wherein in the interval from the powering on of the refrigeration device to the first shutdown of the compressor, if the difference between the ambient temperature and the defrosting temperature is greater than a preset difference and the defrosting temperature is less than a first preset temperature, the refrigeration device enters a stable state, otherwise, the refrigeration device is in a powering on state.

5. The method for estimating compressor power according to claim 2 or 3, wherein the refrigeration equipment is in a steady state when the compressor of the refrigeration equipment has undergone at least one shutdown after being powered on and does not satisfy the conditions corresponding to other operating states.

6. The method for estimating power of a compressor as claimed in claim 2, wherein when the refrigerating device is in a steady state, the door of the freezing chamber of the refrigerating device is opened to a period of next compressor stop, and if the temperature of the freezing chamber is greater than the sum of the starting temperature and the preset temperature of the compressor within a preset time period after the door is opened, the refrigerating device is in a load-applying state, otherwise, the refrigerating device is in a steady state.

7. The method for estimating power of compressor as claimed in claim 2 or 3, wherein when the refrigerating device is in power-on state, the corresponding relationship between power and power of the compressor in different ambient temperatures is counted.

8. The method for estimating the power of a compressor as claimed in claim 2 or 3, characterized in that the speed and power of the compressor at different ambient temperatures are statistically correlated when the refrigeration equipment is in a steady state.

9. The method for estimating power of a compressor as claimed in claim 8, wherein, when the refrigeration equipment is a refrigerator, the statistical correspondence between the rotational speed and the power of the compressor is specifically the correspondence between the rotational speed and the power of the compressor when only the freezing chamber is used for refrigeration and when the freezing chamber is used for refrigeration and the refrigerating chamber is used for refrigeration.

10. The method for estimating power of compressor as claimed in claim 3, wherein when the refrigerator is in a loaded state, the corresponding relation between the temperature variation and the power is counted according to the formula a + T change, wherein a is the power of a steady state in the loaded state, T is the difference between the defrosting temperature of the freezing chamber after the door is opened and the reference temperature, and change is a coefficient related to the rotating speed of the compressor.

11. A method for estimating compressor power as in claim 2 or 3 wherein the compressor power is calculated in the same correspondence as in the steady state when the refrigeration equipment is in the defrost state.

12. A method of estimating a capacity of a refrigeration device, comprising:

estimating the power of the compressor by adopting the method for estimating the power of the compressor as claimed in any one of claims 1 to 11, and calculating the power consumption of the compressor;

calculating the power and the power consumption of other workloads according to the corresponding relation between the power of other workloads of the refrigeration equipment and the running time of the refrigeration equipment, wherein the corresponding relation is obtained through statistics in advance;

and adding the power consumption of the compressor and the power consumption of other working loads to obtain the power consumption of the refrigeration equipment.

Technical Field

The invention relates to an electric quantity estimation technology of refrigeration equipment, in particular to a compressor power and an electric quantity estimation method of the refrigeration equipment.

Background

With the development of intelligent home, the functional requirements of users on electric appliances are higher and higher.

Take common electric appliances such as refrigerators, air conditioners and the like as examples. The user hopes to know the power consumption of the electric appliance used by the user in a certain period of time, most of the existing methods for calculating the electric quantity pass through the electric meter, but the electric meter can only reflect the whole power consumption and cannot specifically reach the power consumption of the electric appliance in a certain period of time. Some manufacturers provide a real-time power consumption calculation function for electric appliance products, but the real-time power consumption calculation function usually requires a special power sensor and a special circuit, the circuit is complex and high in cost, the research and development cost and the maintenance cost are high, and the research and development cost and the maintenance cost all need final purchase of a bill by a consumer, so that the use cost of the consumer is increased, and the popularization is not facilitated.

The user generally only needs to roughly know the power consumption of the electric appliance within a certain time, so that the user can more visually know the relationship between the use condition and the electric quantity of the electric appliance, and a good use habit is formed to achieve the purposes of energy conservation and environmental protection.

Therefore, how to provide a power estimation method is an urgent technical problem to be solved in the industry.

Disclosure of Invention

The invention provides a method for estimating the power of a compressor and the electric quantity of refrigeration equipment, aiming at solving the technical problem of complex electric quantity calculation in the prior art.

The invention provides a method for estimating the power of a compressor, which comprises the following steps:

classifying the running state of the refrigeration equipment according to the working condition and the load of the refrigeration equipment;

counting the corresponding relation between at least one of the compressor rotating speed, the refrigerating equipment running time and the related temperature change of the compressor under different temperature conditions and the compressor power of different refrigerating equipment in each running state;

and estimating the power of the compressor according to the corresponding relation when the refrigeration equipment operates.

Further, when the refrigeration equipment is a refrigerator, the operation states are a power-on state, a stable state, a load-on state and a defrosting state.

Further, when the refrigeration equipment is an air conditioner, the operation state is divided into a power-on state, a stable state and a defrosting state.

Further, in the interval from the powering on of the refrigeration equipment to the first stopping time of the compressor, if the difference value obtained by subtracting the defrosting temperature from the ambient temperature is greater than the preset difference value and the defrosting temperature is less than the first preset temperature, the refrigeration equipment enters a stable state, otherwise, the refrigeration equipment is in a powering on state.

Further, the refrigeration equipment is in a stable state when the compressor of the refrigeration equipment is powered on and is shut down for at least one time and does not meet the conditions corresponding to other operation states.

Further, when the refrigeration equipment is in a stable state, the door of the freezing chamber of the refrigeration equipment is opened to the next compressor stop interval, if the temperature of the freezing chamber is greater than the sum of the starting temperature and the preset temperature of the compressor within the preset time after the door is opened, the refrigeration equipment is in a loading state, otherwise, the refrigeration equipment is in a stable state.

Further, when the refrigeration equipment is in a power-on state, the corresponding relation between the power-on time and the power of the compressor at different ambient temperatures is counted.

Further, when the refrigeration equipment is in a stable state, the corresponding relation between the rotating speed and the power of the compressor at different ambient temperatures is counted.

Further, when the refrigeration equipment is a refrigerator, the corresponding relation between the rotating speed and the power of the compressor is counted, specifically, the corresponding relation between the rotating speed and the power of the compressor is counted under the two conditions that only the freezing chamber is used for refrigeration and the freezing chamber and the refrigerating chamber are used for refrigeration at the same time.

Further, when the refrigerator is in a loading state, the corresponding relation between the relevant temperature change and the power is counted according to a formula a + T change, wherein a is the power in a stable state of the loading state, T is the difference value of the defrosting temperature of the freezing chamber after the door is opened and the reference temperature is subtracted, and change is a coefficient associated with the rotating speed of the compressor.

Further, when the refrigeration apparatus is in the defrosting state, the power of the compressor is calculated in the same correspondence relationship as the steady state.

The invention provides an estimation method of electric quantity of refrigeration equipment, which comprises the following steps:

estimating the power of the compressor by adopting the estimation method of the compressor power in the technical scheme, and calculating to obtain the power consumption of the compressor;

calculating the power and the power consumption of other workloads according to the corresponding relation between the power of other workloads of the refrigeration equipment and the running time of the refrigeration equipment, wherein the corresponding relation is obtained through statistics in advance;

and adding the power consumption of the compressor and the power consumption of other working loads to obtain the power consumption of the refrigeration equipment.

The invention divides the refrigeration equipment into different running states, and under the different running states, the power of the compressor is associated with other available running parameters, detection parameters and the like to obtain the corresponding relation between the power and the detection parameters. And then, the power of the compressor can be estimated according to the corresponding relation, the current operation parameters, the operation state, the detection parameters and the like. Then, the power consumption of refrigeration equipment such as a refrigerator and an air conditioner can be roughly estimated by combining other work loads, so that more visual energy consumption data can be provided for a user, the user can adjust the use habit according to the data, and the purpose of saving energy consumption is achieved.

Drawings

The invention is described in detail below with reference to examples and figures, in which:

fig. 1 is a flow chart of the compressor power calculation 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.

Thus, a feature indicated in this specification will serve to explain one of the features of one embodiment of the invention, and does not imply that every embodiment of the invention must have the stated feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.

The principles of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

The method for estimating the electric quantity of the refrigeration equipment is based on the estimation method of the power of the compressor, when the power consumption of the refrigeration equipment such as a refrigerator, an air conditioner and the like is estimated through the corresponding relation which is counted in advance, the power of the compressor of the refrigeration equipment is not fixed due to the influence of other factors such as the rotating speed and the like, other working loads such as an LED lamp and the like can be calculated according to the fixed power, and then the electric quantity of the refrigeration equipment is calculated through the power.

Fig. 1 shows a flow chart of a method of estimating compressor power.

The invention classifies the running state of the refrigeration equipment according to the working condition and the load of the refrigeration equipment. When the refrigeration apparatus is a refrigerator, the operation state of the refrigerator may be divided into a power-on state, a stable state, a load-on state, and a defrosting state. When the refrigeration equipment is an air conditioner, the operation state of the air conditioner can be divided into a power-on state, a stable state and a defrosting state.

And counting the corresponding relation between at least one of the compressor rotating speed, the refrigerating equipment running time and the related temperature change of the compressor under different temperature conditions and the compressor power of different refrigerating equipment in each running state, and estimating the compressor power according to the obtained corresponding relation when the refrigerating equipment runs. The reason why the different types of refrigeration equipment are different types of refrigeration equipment is that the refrigeration equipment of the same type and different types may have differences in compressor power, and in order to accurately obtain the compressor power, statistics is performed according to different types and different types, which is helpful for the accuracy of the estimation result.

The following describes the definition of the above-described operating states and specific data of statistics.

The judgment condition of the power-on state is that in the interval from the power-on of the refrigeration equipment to the first shutdown moment of the compressor, if the difference value of the ambient temperature minus the defrosting temperature is larger than the preset difference value and the defrosting temperature is smaller than the first preset temperature, the refrigeration equipment enters the stable state, otherwise, the refrigeration equipment is in the power-on state. For example, after the refrigerator is powered on for 10 seconds, the defrosting temperature detected by the defrosting sensor is acquired and recorded, the environment temperature detected by the environment temperature sensor is judged whether the environment temperature is higher than the defrosting temperature by more than 10 ℃, the defrosting temperature is lower than 4 ℃, if the condition is met, the refrigerator is judged to enter a stable state, and if the condition is not met, the refrigerator is in a powered-on state. The first stop time of the compressor is the time when the compressor should be stopped, and if the compressor is not stopped at the time when the compressor should be stopped, the compressor is in a stable state from the first stop time of the compressor.

The determination condition of the steady state is that the compressor has been once stopped during the operation of the refrigeration apparatus, and the determination condition of the other operation state is not satisfied.

The loading state is the unique running state of the refrigeration equipment such as a refrigerator, the air conditioner has no running state, the judgment condition of the loading state is that the current refrigerator is in a stable state, a door of a freezing chamber of the refrigerator is opened to the next interval of compressor halt, if the temperature of the freezing chamber is greater than the sum of the starting temperature and the preset temperature of the compressor within the preset time after the door is opened, the refrigerator is in the loading state, and if not, the refrigerator is in the stable state. For example, the door of the freezer compartment of a refrigerator is opened and the temperature of the freezer compartment is greater than the sum of the compressor turn-on temperature and the preset temperature within 1 minute of opening the door.

When the operation state is the power-on state, the corresponding relationship between the power-on time and the power of the compressor at different ambient temperatures is counted in advance, and finally, a corresponding relationship table among the power, the power-on time and the ambient temperature et shown in the following table can be obtained.

TABLE 1 Power calculation Table for Power-on State

And updating the power of the refrigerating equipment every 5min, and calculating according to the steady-state power until the compressor stops if the compressor does not stop at the stop moment. Taking a refrigerator as an example, in a power-on state (namely, the stop time of a compressor is not reached yet, the refrigeration of a freezing chamber is not stopped), if the refrigerating chamber reaches the stop time of the refrigeration, but the refrigeration is not stopped (a damper is not closed) at the moment of the actual refrigeration, the power of the first 5min of the stop time of the refrigeration is taken as the current power until the refrigerating chamber is stopped (the damper is closed), and the power is updated again according to the table 1 every 5min at the moment.

And when the running state is a stable state, counting the corresponding relation between the rotating speed and the power of the compressor at different ambient temperatures et. If the refrigeration equipment is a refrigerator, the corresponding relation between the rotating speed and the power of the compressor is further counted, specifically, the corresponding relation between the rotating speed and the power of the compressor under two conditions of refrigerating only in the freezing chamber and refrigerating in the freezing chamber simultaneously is counted, and the specific relation is shown in the following table.

TABLE 2 Steady State Power calculation Table

When the operation state is the loading state of the refrigerator, the corresponding relation between the relevant temperature change and the power is counted according to a formula a + T change, wherein a is the power of the loading state in a stable state, T is the difference value of the defrosting temperature of the freezing chamber after the door is opened and the reference temperature is subtracted, and change is a coefficient associated with the rotating speed of the compressor. According to the refrigeration conditions of the freezing chamber and the refrigerating chamber, the power in a stable state in the lookup table 2 is used as a reference value a, the difference value of the reference value (b ℃) corresponding to the defrosting temperature and the defrosting temperature after the door of the freezing chamber is opened is judged to be T, and the power value after the temperature change, namely a + T change, is determined according to the difference value until the freezing chamber reaches the stop point. The value of change can be calculated through experimental data, for example, the rotating speed of the refrigerator is divided into 9 rotating speed gears of S0-S8, and the power change rule can be obtained through the experimental data as follows: when the rotating speed is in a gear of S4, the change of the corresponding power value at every 1 ℃ is 2w, the change of the corresponding power value at every 1 ℃ is 2.5w when the rotating speed is S5, the change of the corresponding power value at every 1 ℃ when the rotating speed is S6 is 3w, the change of the corresponding power value at every 1 ℃ when the rotating speed is S7 is 3.5w, and the change of the corresponding power value at every 1 ℃ when the rotating speed is S8 is 4 w; and the change of the corresponding power value change is 1w when the rotating speeds S0-S3 and S4 change by 1 ℃.

And when the running state is the defrosting state, calculating the power of the compressor according to the corresponding relation which is the same as the stable state.

After the compressor power of the refrigeration equipment is calculated according to the technical scheme, the power consumption of the compressor is calculated, then the power and the power consumption of other work loads are calculated according to the corresponding relation between the power of other work loads of the refrigeration equipment and the running time of the refrigeration equipment, which is obtained through statistics in advance, and the power consumption of the compressor and the power consumption of other work loads are added to obtain the electric quantity of the refrigeration equipment.

The method of the invention can make the user know the power consumption of the air conditioner or the refrigerator in the recent period of time, and can more intuitively feel the relationship between the self using mode and the power consumption, thereby forming good using habit. Meanwhile, the method is simple, practical and low in cost.

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.