WO2015043276A1 - Method and apparatus for controlling working frequency of compressor - Google Patents

Abstract

Disclosed are a method and an apparatus for a controlling a working frequency of a compressor. The method comprises: obtaining a detection parameter and a fixed parameter; in a case in which the time of hot water preparation is fixed, calculating a working frequency of a compressor according to the detection parameter and the fixed parameter, so as to obtain a frequency regulation value of the compressor; and controlling the frequency output of the compressor according to the frequency regulation value.

Description

 Compressor operating frequency control method and device

TECHNICAL FIELD The present invention relates to the field of household appliances, and in particular to a method and apparatus for controlling a working frequency of a compressor. BACKGROUND OF THE INVENTION At present, the hot water time of the existing air energy water heater is mainly affected by the heat generation, in addition to the influence of the hydration temperature, the set temperature, and the amount of heating water. As shown in Fig. 1, the heat generation of the air energy water heater is reduced as the ambient temperature is lowered, and the heat generation of the water heater is reduced, and the time for hot water heating is also increased. When users use it, they will face different problems of different hot water temperatures. This will cause users to wait differently for water, which will affect users' feelings. In addition, since the heating capacity of the fixed-frequency water heater in various environments is certain, it is difficult to change. Therefore, for the hot water supply of the water heater at different ambient temperatures, different heating times are generated, resulting in low user efficiency. The control method is mainly for the frequency conversion hot water machine, and the heating time of each ambient temperature is consistent by the method of controlling the frequency, and the problem of inconsistent water use time caused by the change of the heating amount of the user is solved. . In summary, at present, the heating time of the variable frequency air energy water heater in different related environments is inconsistent, resulting in the problem that the user waiting time is not constant during the use of the water heater, and no effective solution has been proposed yet. SUMMARY OF THE INVENTION In the related art, when the variable frequency air energy water heater is used to make hot water at different ambient temperatures, the heating time is inconsistent, resulting in a problem that the user waiting time is not constant during the use of the water heater, and no effective solution has been proposed yet. The main object of the invention is to provide a method and apparatus for controlling the operating frequency of a compressor to solve the above problems. In order to achieve the above object, according to an aspect of the present invention, a method for controlling a working frequency of a compressor is provided, the method comprising: acquiring a detection parameter and a fixed parameter; and maintaining the hot water heating time fixed, according to the detection parameter and The fixed parameter calculates the operating frequency of the compressor to obtain the frequency adjustment value of the compressor; and controls the frequency output of the compressor according to the frequency adjustment value. Further, the detection parameters include: ambient temperature Te, initial water temperature Twc, target water temperature Tws, and fixed parameters include: rated heating energy Qo at rated operating conditions, rated operating time to, rated operating frequency fo, and water tank water capacity m The step of calculating the operating frequency of the compressor according to the detection parameter and the fixed parameter to obtain the frequency adjustment value of the compressor includes: calculating the frequency adjustment value f by the following formula: j _ jc - m - (Tws - Twc)

° ⁶⁰ '"' ^Qo , where fo is the rated operating frequency, to is the rated operating time, Qo is the rated heating energy, c is the specific heat capacity of the water, m is the water capacity of the tank, ζ is the capacity attenuation correction factor, Twc is the initial water Temperature, Tws is the target number temperature. Further, before calculating the frequency adjustment value f by the following formula, the method further includes: detecting the current ambient temperature; querying from the correction coefficient library according to the current ambient temperature to obtain the current ambient temperature Corresponding capacity attenuation correction coefficient. Further, the detection parameters include: ambient temperature Te, initial water temperature Twc, target water temperature Tws, and fixed parameters include: rated heating energy Qo at rated working conditions, rated running time to, rated operation The frequency fo and the water tank water capacity m, wherein the step of calculating the operating frequency of the compressor according to the detection parameter and the fixed parameter to obtain the frequency adjustment value of the compressor comprises: calculating the frequency adjustment value f by the following formula: J- _ J- c - m - (Tws - Twc)

° ^ - t ₀ - (a - Te + b) - Q _{0 ?} where _fo is the rated operating frequency, to is the rated operating time, Qo is the rated heating energy, c is the specific heat capacity of the water, m is the water capacity of the tank, Te For ambient temperature, a and b are the attenuating performance of the hot water unit, Twc is the initial water temperature, and Tws is the target number temperature. Further, the frequency adjustment value is rounded. In order to achieve the above object, according to another aspect of the present invention, a control device for operating a compressor frequency is provided, the device comprising: an acquisition module for acquiring detection parameters and fixed parameters; and a processing module for maintaining heating When the water time is fixed, the operating frequency of the compressor is calculated according to the detection parameters and the fixed parameters to obtain the frequency adjustment value of the compressor; and the control module is configured to control the frequency output of the compressor according to the frequency adjustment value. Further, the detection parameters include: ambient temperature Te, initial water temperature Twc, target water temperature Tws, and fixed parameters include: rated heating energy Qo at rated operating conditions, rated operating time to, rated operating frequency fo, and water tank water capacity m The processing module includes: a first calculating module, configured to calculate a frequency j _ jc - m - (Tws - Twc) by using the following formula

Rate adjustment value f: ° ⁶⁰ · " · , where fo is the rated operating frequency, to is the rated operating time, Qo is the rated heating energy, c is the specific heat capacity of the water, m is the water capacity of the tank, and ζ is the correction factor for the capacity attenuation. Twc is the initial water temperature and Tws is the target temperature. Further, the device further includes: a detecting module, configured to detect a current ambient temperature; and a query module, configured to perform a query from the correction coefficient library according to the current ambient temperature, to obtain a capability attenuation correction coefficient corresponding to the current ambient temperature. Further, the detection parameters include: ambient temperature Te, initial water temperature Twc, target water temperature Tws, and fixed parameters include: rated heating energy Qo at rated operating conditions, rated operating time to, rated operating frequency fo, and water tank water capacity m The processing module includes: a second calculating module, configured to calculate a frequency j- _ j- c - m - (Tws - Twc) by using the following formula

Rate adjustment value f: ° ^- a - Te + b) - Q _o , where _fo is the rated operating frequency, _t0 is the rated operating time, Qo is the rated heating energy, c is the specific heat capacity of water, m is the water capacity of the tank, Te is the ambient temperature, a and b are the attenuating performance of the hot water unit, Twc is the initial water temperature, and Tws is the target number temperature. Further, the device further includes: a third calculating module, configured to perform rounding processing on the frequency adjustment value. According to the invention, the detection parameter and the fixed parameter are acquired; when the hot water heating time is fixed, the operating frequency of the compressor is calculated according to the detection parameter and the fixed parameter to obtain the frequency adjustment value of the compressor; Controlling the frequency output of the compressor, solving the problem that the heating time is inconsistent when the variable frequency air energy water heater is heated under different ambient temperatures in the related art, resulting in the problem that the user waiting time is not constant during the use of the water heater, and then the hot water machine is realized. The hot water time during any ambient temperature operation is constant, and the effect of the time required to make the hot water is clear. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a schematic view showing a heating time of a heat pump water heater according to an ambient temperature; FIG. 2 is a schematic structural view of a control device for operating frequency of a compressor according to an embodiment of the present invention; FIG. 3 is a working of a compressor according to an embodiment of the present invention. A schematic flowchart of a frequency control method; and FIG. 4 is a detailed flow chart of a control method of a compressor operating frequency according to an embodiment of the present invention. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. Before describing further details of various embodiments of the present invention, a suitable computing architecture that can be used to implement the principles of the present invention will be described with reference to FIG. In the following description, unless otherwise indicated, embodiments of the present invention are described with reference to the symbolic representation of acts and operations performed by one or more computers. Thus, it will be appreciated that such actions and operations, sometimes referred to as computer execution, include the manipulation of an electrical signal by a processing unit of a computer to represent data in a structured form. This manipulation converts the data or maintains it in a location in the computer's memory system, which reconfigures or changes the operation of the computer in a manner that is understood by those skilled in the art. The data structure that maintains the data is the physical location of the memory with the specific attributes defined by the format of the data. However, although the present invention is described in the above context, it is not meant to be limiting, and as understood by those skilled in the art, aspects of the actions and operations described hereinafter may also be implemented in hardware. Turning to the drawings, wherein like reference numerals refer to the same elements, the principles of the invention are shown in a suitable computing environment. The following description is based on the embodiments of the invention, and should not be construed as limiting the invention to the alternative embodiments not specifically described herein. Figure 2 shows a schematic diagram of an example control architecture that can be used with these devices. For the purposes of this description, the depicted architecture is only one example of a suitable environment and is not intended to limit the scope of the invention. Nor should the computing system be interpreted as having any dependency or requirement on any of the components shown in Figure 2, or combinations thereof. In its most basic configuration, FIG. 2 is a schematic structural view of a control device for operating frequency of a compressor according to an embodiment of the present invention. As shown in FIG. 2, the control device of FIG. 2 includes at least: an acquisition module 202, a processing module 204, and a control module 206. The obtaining module 202 is configured to acquire the detection parameter and the fixed parameter. The processing module 204 is configured to calculate the working frequency of the compressor according to the detection parameter and the fixed parameter when the hot water heating time is fixed, to obtain the compressor. The frequency adjustment value; the control module 206 is configured to control the frequency output of the compressor according to the frequency adjustment value. The application reads the parameters for the computer group frequency through the obtaining module 202 in the above embodiment, and then performs frequency calculation based on the above parameters through the processing module 204 to obtain the frequency adjustment value of the compressor, and the device passes the control module. 206 uses the frequency adjustment value to control the frequency output of the compressor, thereby solving the problem of inconsistent heating time of different ambient temperature of the variable frequency air energy water heater. The solution provided by this embodiment makes the water heater unit unnecessary to add any hardware device, thereby reducing the cost, and implementing the device through frequency adjustment and control. The hot water machine has a constant hot water time when operating at any ambient temperature, and the waiting time for the hot water supply of the water heater is clear, and the water waiting time caused by the inconsistent heating time of the unit due to the change of the operating conditions of the unit is solved. problem. The running program of the above obtaining module 202, one processing module 204 and one control module 206 of the present application may be stored in a storage medium, and the functions of the respective functional modules may be executed by a processor in the control device of the compressor operating frequency. Specifically, the factors affecting the hot water time of the variable frequency hot water mechanism in the embodiments of the present application are: ambient temperature Te, starting heating water temperature (preheating hot water initial temperature) Twc, target water temperature (ie, user set temperature) Tws, water tank water capacity m, and the compressor frequency f. The calculation formula for calculating the hot water time in this embodiment is:

_ c - m - (Tws - Twc)

 6° - Q , where t is the heating time, the unit can be min; c is the specific heat capacity of water, which can be 4.187kj/kg °C; m is the mass of water in the water tank, the unit can be kg; Tws is the temperature set for the user , the unit can be. C ; Twc is the initial temperature of heating, the unit can be. C ; Q is the hot water mechanism heat capacity, the unit can be kw. The water quality of the water tank m and the heating time t in the above formula are set to a fixed value in the design of the hot water unit, so! ^ t can be a known amount; Tws is set by the line controller, Twc can be collected by the controller, so it can also be obtained by means of acquisition, which is a known quantity. From the above, the parameters t, m, Tws, Twc are controlled. The device is a known quantity, and only the unit heating capacity Q is uncertain and will vary according to the ambient temperature. Because the hot water machine can set the rated working condition (for example, set the water temperature to 15-55 °C when the environment is 20/15 °C), the heating capacity Qo, the operating frequency fo and the running time to the rated working condition are It can be pre-set at design time and is therefore known as a reference for subsequent frequency control. For the heating capacity Q of the hot water unit and the compressor frequency f, the ambient temperature Te and the water temperature Tw of the water tank, for the rated working condition of the hot water machine, Q has the following relationship with f:

Q f c - m - (Tws Twc) f. c - m - (Tws Twc)

=^, and there is = ^ ^ ^, then. ^ ^......... (Formula 3). Based on the above analysis, the detection parameters in the above embodiments of the present application may include: ambient temperature Te, initial water temperature Twc, target water temperature Tws, and fixed parameters include: rated heating energy Qo at rated working conditions, rated running time to , rated operating frequency fo and tank water capacity m. Preferably, the processing module 204 in the foregoing embodiment may include: a first calculating module, configured to calculate a frequency adjustment value f by using the following formula: c - m - (Tws - Twc)

° ⁶⁰ '"' ^Q . , where fo is the rated operating frequency, to is the rated operating time, Qo is the rated heating energy, c is the specific heat capacity of the water, m is the water capacity of the tank, and ζ is the capacity attenuation correction factor. The running program of the first calculating module may be stored in the storage medium, and may perform the function of the above function module through a processor in the control device of the compressor operating frequency. Specifically, the ambient temperature versus capability is adopted in the above embodiment. Influence using list coefficient correction method, when

Q ζ + ^

When the water heater unit is at other ambient temperatures, Q has the following relationship with Qo: From this, we know that upper j _ j c - m - (Tws - Twc)

Equation 3 can be transformed into: - 0 ₀ (Equation 4), where ζ is the ability attenuation correction factor. The capacity attenuation correction factor at different ambient temperatures in this application is shown in Table 1. Table 1

In the above embodiment, when Te, Tws, and Twc are changed, the operating frequency of the hot water unit can be adjusted according to the value calculated by the above formula 4, and the heating time t can be kept constant. Therefore, the hot water heating time of the hot water machine can be kept constant at any ambient temperature, and the waiting time for the hot water preparation is clear. Preferably, the device in the above embodiment further includes: a detecting module, configured to detect a current ambient temperature; and a query module, configured to perform a query from the correction coefficient library according to the current ambient temperature, to obtain a capability attenuation correction corresponding to the current ambient temperature. coefficient. The correction factor library can be pre-set and saved. The running program of the above detecting module and the query module of the present application may be stored in a storage medium, and the function of the above function module may be executed by a processor in a control device of a compressor operating frequency. In addition, based on the above analysis, the detection parameters in the foregoing embodiments of the present application may include: an ambient temperature Te, an initial water temperature Twc, and a target water temperature Tws, and the fixed parameters include: a rated heating energy Qo during a rated working condition. Time to, rated operating frequency fo and tank water capacity m. Another preferred embodiment may be that the processing module 204 in the above embodiment may include: a second calculating module, configured to calculate the frequency adjustment value f by using the following formula: c - m - (Tws - Twc)

(公式 5 )，通过上述公式 5可以计算得到热水 机组进行调节的工作频率值， 可以保持加热时间 t是不变的。 从而可以实现热水机在 任何环境温度运行时的制热水时间恒定， 明确制热水需等待的时间。 优选地， 本申请上述实施例中的装置还可以包括： 第三计算模块， 用于对频率调 节值进行取整处理。 具体的， 由于上述公式 4或 5的计算结果一般会存在小数， 而压 缩频率为整数， 故需取整 int ( f)。 因此， 机组控制器软件只要根据 int ( f) 就可以对 处于不同环境温度、 设定水温度、 水箱水温情况下调整压缩机运行频率达到加热时间 一致的目标。 本申请上述第三计算模块的运行程序可以保存在存储介质中， 并可以通过压缩机 工作频率的控制装置中的处理器来执行上述功能模块的功能。 图 3是根据本发明实施例的压缩机工作频率的控制方法的流程示意图； 图 4是根 据本发明实施例的压缩机工作频率的控制方法的详细流程示意图。 如图 3所示本申请的控制方法可以包括如下步骤： 步骤 S 10， 通过图 2中的获取模块 202来获取检测参数和固定参数。 各个参数取 值可以如图 4所示的实施例。 步骤 S30， 通过图 2中的处理模块 204执行在保持制热水时间固定的情况下， 根 据检测参数和固定参数计算压缩机的工作频率， 以获取压缩机的频率调节值。 步骤 S50， 通过图 2中的控制模块 206来实现根据频率调节值来控制压缩机的频 率输出。 本申请通过读取用于计算机组频率的各个参数， 然后通过基于上述参数进行频率 计算， 以得到压缩机的频率调节值， 该装置通过使用该频率调节值来控制压缩机的频 率输出， 从而解决了变频空气能热水器不同环境温度加热时间不一致的问题。 该实施 例所提供的方案使得热水器机组无需增加任何硬件装置， 从而降低了成本， 通过频率 调节和控制的装置来实现热水机在任何环境温度运行时的制热水时间恒定， 明确热水 器的制热水需等待的时间， 解决由于机组运行条件变化制热水时间不一致给用户带来 的用水等待时间不同的困扰问题。 通过上述方法， 本申请实现了通过指定一种压缩机频率控制规则， 从而调整加热 时间一致。 一种优选实施例中， 如图 4所示， 本申请上述实施例中的检测参数可以包括： 环 境温度 Te、 初始水温度 Twc、 目标水温度 Tws， 固定参数包括： 额定工况时的额定制 热热能 Qo、 额定运行时间 to、 额定运行频率 fo和水箱水容量 m， 其中， 根据检测参 数和固定参数计算压缩机的工作频率， 以获取压缩机的频率调节值的步骤包括： 通过以下公式计算得到频率调节值 f: c - m - (Tws - Twc) ° W'tAa' Te + b Q _o , where _fo is the rated operating frequency, _t0 is the rated operating time, Qo is the rated heating energy, c is the specific heat capacity of the water, m is the water capacity of the tank, Te is the ambient temperature, a and b is the attenuation performance of the hot water unit, Twc is the initial water temperature, and Tws is the target number temperature. The running program of the second calculating module of the present application may be stored in a storage medium, and the function of the above functional module may be executed by a processor in a control device of a compressor operating frequency. Specifically, in the above embodiment, the influence of the ambient temperature on the heating capacity Q is modified by a formula. At the same frequency, the change of 0 with the ambient temperature has the following relationship = ^ ' ^{+ 1} ^ ' ^, where a, b is related to the attenuation performance of the unit, where a and b are obtained according to the experimental statistics during the operation of the unit with the same capacity. For example, the constant value of the hot water unit as the performance of the machine is attenuated during operation is recorded and recorded. It can be seen that when the unit of the hot water machine is at different ambient temperatures Te, Q and f have the following relationship:

(Formula 5), the operating frequency value adjusted by the hot water unit can be calculated by the above formula 5, and the heating time t can be kept constant. Therefore, the hot water heating time of the hot water machine can be kept constant at any ambient temperature, and the waiting time for the hot water preparation is clear. Preferably, the apparatus in the foregoing embodiment of the present application may further include: a third calculating module, configured to perform rounding processing on the frequency adjustment value. Specifically, since the calculation result of the above formula 4 or 5 generally has a decimal number and the compression frequency is an integer, it is necessary to round the int (f). Therefore, the unit controller software can adjust the compressor operating frequency to the same heating time under different ambient temperature, set water temperature, and tank water temperature according to int (f). The running program of the third calculating module of the present application may be stored in a storage medium, and the function of the above functional module may be executed by a processor in a control device of a compressor operating frequency. 3 is a schematic flow chart of a method for controlling a working frequency of a compressor according to an embodiment of the present invention; and FIG. 4 is a detailed flow chart of a method for controlling a working frequency of a compressor according to an embodiment of the present invention. As shown in FIG. 3, the control method of the present application may include the following steps: Step S10: Acquire detection parameters and fixed parameters by using the acquisition module 202 in FIG. 2. The values of the various parameters can be as shown in the embodiment of FIG. In step S30, the processing module 204 in FIG. 2 performs the calculation of the operating frequency of the compressor according to the detected parameters and the fixed parameters in the case where the hot water heating time is fixed, to obtain the frequency adjustment value of the compressor. In step S50, the frequency output of the compressor is controlled according to the frequency adjustment value by the control module 206 in FIG. The present application obtains a frequency adjustment value of a compressor by reading various parameters for a computer group frequency, and then performing frequency calculation based on the above parameters, and the device controls the frequency output of the compressor by using the frequency adjustment value, thereby solving The problem of inconsistent heating time of different ambient temperature of variable frequency air energy water heaters. The solution provided by the embodiment makes the water heater unit unnecessary to add any hardware device, thereby reducing the cost, and the water heating time of the hot water machine running at any ambient temperature is constant through the frequency adjustment and control device, and the water heater system is clearly defined. The time that the hot water needs to wait, solves the problem that the water waiting time is different due to the inconsistent heating time of the unit due to the change of the operating conditions of the unit. Through the above method, the present application realizes that the heating time is adjusted by specifying a compressor frequency control rule. In a preferred embodiment, as shown in FIG. 4, the detection parameters in the above embodiments of the present application may include: an ambient temperature Te, an initial water temperature Twc, and a target water temperature Tws, and the fixed parameters include: a rated system at a rated working condition. The thermal energy Qo, the rated running time to, the rated operating frequency fo, and the water tank water capacity m, wherein the step of calculating the operating frequency of the compressor based on the detected parameters and the fixed parameters to obtain the frequency adjustment value of the compressor includes: Get the frequency adjustment value f: c - m - (Tws - Twc)

° ⁶⁰ '"' ^Q . , where fo is the rated operating frequency, to is the rated operating time, Qo is the rated heating energy, c is the specific heat capacity of the water, m is the water capacity of the tank, ζ is the capacity attenuation correction factor, Twc is the initial The water temperature and Tws are the target temperature. The following is a detailed description of the embodiment: Specifically, the factors affecting the hot water time of the variable frequency hot water mechanism in the embodiment of the present application are: ambient temperature Te, starting to heat the water temperature (initial heating) Temperature) Twc, target water temperature (ie user set temperature) Tws, tank water capacity m, and compressor frequency. The calculation formula used to calculate the hot water time in this example is: c - m - {Tws - Twc)

⁶ ° - Q , where t is the heating time, the unit can be min; c is the specific heat capacity of water, which can be 4.187kj/kg °C; m is the mass of water in the water tank, the unit can be kg; Tws sets the temperature for the user Single The bit can be. C ; Twc is the initial temperature of heating, the unit can be. C ; Q is the hot water mechanism heat capacity, the unit can be kw. The water quality m of the water tank and the heating time t in the above formula are that the hot water unit can be set to a fixed value at the time of design, so! ^ t can be a known amount; Tws is set by the line controller, Twc can be collected by the controller, so it can also be obtained by means of acquisition, which is a known quantity. From the above, the parameters t, m, Tws, Twc are controlled. The device is a known quantity, and only the unit heating capacity Q is uncertain and will vary according to the ambient temperature. Because the hot water machine can set the rated working condition (for example, set the water temperature to 15-55 °C when the environment is 20/15 °C), the heating capacity Qo of the rated working condition, the operating frequency fo and the running time to It can be pre-set at design time and is therefore known as a reference for subsequent frequency control. For the heating capacity Q of the hot water unit and the compressor frequency f, the ambient temperature Te and the water temperature Tw of the water tank, for the rated working condition of the hot water machine, Q has the following relationship with f:

Q f c - m - (Tws Twc) f. c - m - (Tws Twc)

H , touch = ^ ^, then ⁼ ^^ ^ ^ (Equation 3). It can be seen from the above analysis that the influence of the ambient temperature on the heating capacity of the present application can be obtained by using the list coefficient correction method, that is, the list coefficient correction method is used to obtain the frequency adjustment value f of the compressor. When the water heater unit is at other ambient temperatures, Q has the following relationship with Qo: From this, it can be seen that Equation 3 above can transform c - m - (Tws Twc)

It is: (Equation 4), where ζ is the ability attenuation correction factor. The capacity attenuation correction factor at different ambient temperatures in this application is shown in Table 1. Table 1

In the above embodiment, when Te, Tws, and Twc are changed, the operating frequency of the hot water unit can be adjusted according to the value calculated by the above formula 4, and the heating time t can be kept constant. From the ^ can be achieved when the hot water machine is running at any ambient temperature, the hot water time is constant, to determine the time to wait for the hot water. Preferably, in the above embodiment, before calculating the frequency adjustment value f by the following formula, the method further includes the following steps: detecting the current ambient temperature; querying from the correction coefficient library according to the current ambient temperature to obtain the current ambient temperature Corresponding ability attenuation correction factor. The correction factor library can be pre-set and saved. In another preferred embodiment, as shown in FIG. 4, the detection parameters in this embodiment of the present application may include: an ambient temperature Te, an initial water temperature Twc, a target water temperature Tws, and the fixed parameters include: Customized thermal energy Qo, rated running time to, rated operating frequency fo and tank water capacity m, wherein the steps of calculating the operating frequency of the compressor according to the detection parameters and the fixed parameters to obtain the frequency adjustment value of the compressor include: Calculate the frequency adjustment value f:

J- _ J- c - m - (Tws - Twc)

° W't. ' (a ' T _e + bYQ., where _fo is the rated operating frequency, to is the rated operating time, Qo is the rated heating energy, c is the specific heat capacity of the water, m is the water capacity of the tank, Te is the ambient temperature, a and b For the hot water unit attenuation performance, Twc is the initial water temperature, and Tws is the target number temperature. Specifically, the influence of the ambient temperature on the heating capacity Q in the above embodiment adopts another formula correction method, at the same frequency, The change of Q with the ambient temperature Te has the following relationship Q = a ' 3⁄4 +b Qo, where _a and _{b are} related to the attenuation performance of the unit, where a and b are obtained according to the experimental statistics during the operation of the unit with the same capacity, for example, detecting the hot water unit The constant value of the machine's performance is attenuated during operation and recorded. It can be seen that when the unit of the hot water machine is at different ambient temperatures Te, Q has the following relationship with f: c - m - (Tws Twc)

° ^- - ^ - T + b) - Q _o (Equation 5), the operating frequency value of the hot water unit can be calculated by the above formula 5, and the heating time t can be kept constant. Therefore, the hot water heating time of the hot water machine can be kept constant at any ambient temperature, and the waiting time for the hot water preparation is clear. Preferably, as shown in FIG. 4, in each of the above preferred embodiments of the present application, the frequency adjustment value may be rounded. Specifically, since the calculation result of the formula 4 or 5 in the two preferred embodiments generally has a decimal number and the compression frequency is an integer, the int (f) needs to be rounded. Therefore, the unit controller software can adjust the compressor operating frequency to the same heating time under different ambient temperature, set water temperature, and tank water temperature according to int (f). Based on the principle analysis of the above various embodiments, the present invention will be further described in detail by way of specific examples as follows: It is known that: when a rated frequency conversion hot water unit is rated at a working condition of Te=20 °C, the unit capacity Qo=3.0 KW, The water quality of the water tank is m=200kg, and the water of the water tank of the unit is heated from 15 °C to 55 °C, the time is to=186min, and the running frequency is 50Hz. Method 1: The list coefficient correction method: When the heating capacity of the hot water unit at the same frequency is known to be corrected with the environmental attenuation coefficient ζ as shown in Table 2 below: Table 2

 And when the ambient temperature changes to Te=7°C, the tank temperature Twc=9°C, and the target water temperature Tws=52°C, the operating frequency f should be adjusted accordingly:

, , _{( t%} _ . , f _f , fiber, (T s- Tivc)

Lilt 1/ ⁼ lilt v fO■ "―■ : I

 60 - to · ζ■ (Jo

■ ― . 4.187 - 200- (52 - 9)

Furnace ⁼ off 60 - iS6 - 0.75 · 3.0 hit ( f) = 72Hz From the above calculation results, the compressor frequency can be adjusted to 72Hz to maintain 186min heating

Method 2: Formula correction method: When the capacity of the unit is known to decay with the environment at the same frequency as Q=a · Te+b=0.0185 · Te+0.6269, the ambient temperature changes to Te=7°C, the tank temperature Twc= 9 ° C, set the target water temperature Tws = 52 ° C, the operating frequency f should be adjusted accordingly: Fiber (Tws - Twc)

 Int ( f ) = tat C fe ■ 7Γ

 60 · to > (a > Te + b) « Qo

4,187 ' 200 · {55―

 Int i f) = mt "50 ·

 Wrapped. 186 'Foot. 7 + 0,6269) ' 3,0 int ( f) = 71Hz From the above calculation results, the compressor frequency can be adjusted to 71Hz to maintain 186min heating.

The frequencies calculated by the above method 1 and method 2 are basically the same, and both methods can achieve the purpose of uniform heating time of the unit under different conditions. From the above description, it can be seen that the present invention achieves the following technical effects: The present application makes the water heater unit unnecessary to add any hardware device, thereby reducing the cost, and realizing the hot water machine at any ambient temperature through the frequency adjustment and control device. The hot water time during operation is constant, and the waiting time for hot water is determined. The problem of different water waiting time caused by the inconsistent heating time of the unit due to the change of the operating conditions of the unit is solved. It should be noted that the various functional modules provided by the embodiments of the present application may be operated in a water heater, a refrigerator or the like, or may be stored as part of a storage medium of a water heater or a refrigerator. Thus, embodiments of the present invention may provide a water heater that may be any one of the water heater units. In this embodiment, the water heater may execute the program code of the following steps in the control method of the compressor operating frequency: acquiring the detection parameter and the fixed parameter; and calculating the compression according to the detection parameter and the fixed parameter while maintaining the hot water heating time fixed The operating frequency of the machine to obtain the frequency adjustment value of the compressor; the frequency output of the compressor is controlled according to the frequency adjustment value. Optionally, the water heater may comprise: one or more processors, a memory, and a transmission device. The memory can be used to store a software program and a module, for example, a method and a module corresponding to a method for controlling a working frequency of a compressor in an embodiment of the present invention, and a processor executes a software program and a module stored in the memory. Thereby, various functional applications and data processing are performed, that is, a control method and apparatus for realizing the above-described compressor operating frequency. The memory may include a high speed random access memory, and may also include non-volatile memory such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory. In some examples, the memory can further include memory remotely located relative to the processor, the remote memory being connectable to the terminal over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof. The above transmission device is for receiving or transmitting data via a network. Specific examples of the above network may include a wired network and a wireless network. In one example, the transmission device includes a Network Interface Controller (NIC) that can be connected to other network devices and routers via a network cable to communicate with the Internet or a local area network. In one example, the transmission device is a Radio Frequency (RF) module for communicating with the Internet wirelessly. Specifically, the memory is used to store preset action conditions and information of the preset authority user, and an application. The processor can invoke the memory stored information and the application by the transmitting device to execute the program code of the method steps of each of the alternative or preferred embodiments of the above method embodiments. A person skilled in the art can understand that all or part of the steps of the foregoing embodiments can be completed by a program to instruct terminal device related hardware, and the program can be stored in a computer readable storage medium, and the storage medium can be Including: flash drive, read-only memory (ROM), random access memory (Random Access Memory, RAM), disk or optical disc. Embodiments of the present invention also provide a storage medium. Optionally, in this embodiment, the foregoing storage medium may be used to store program code executed by the control function of the compressor operating frequency provided by the foregoing method embodiment and the device embodiment. Optionally, in this embodiment, the foregoing storage medium may be located in any one of the water heater groups in the computer network. Optionally, in this embodiment, the storage medium is configured to store program code for performing the following steps: acquiring translation content input by the user; acquiring detection parameters and fixed parameters; and maintaining the hot water time fixed, Calculate the operating frequency of the compressor according to the detection parameters and the fixed parameters to obtain the frequency adjustment value of the compressor; and control the frequency output of the compressor according to the frequency adjustment value. Alternatively, in the present embodiment, the storage medium may also be arranged to store program code for performing various preferred or optional method steps provided by the personalized translation method for the universal machine translation engine. The various embodiments in the present specification are described in a progressive manner, and the same or similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment. As used herein, the term "module,""component," or "unit" can refer to a software object or routine that is executed on a control system. The different components, modules described herein, can be implemented as objects or processes executing on a control system (eg, as separate threads). Although the systems and methods described herein are preferably implemented in software, hardware or a combination of software and hardware is also possible and contemplated. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into respective integrated circuit modules. Blocks, or a plurality of modules or steps in them, are implemented as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim A method for controlling a working frequency of a compressor, comprising: acquiring a detection parameter and a fixed parameter; and calculating a working frequency of the compressor according to the detection parameter and the fixed parameter when the hot water heating time is fixed And acquiring a frequency adjustment value of the compressor; and controlling a frequency output of the compressor according to the frequency adjustment value. 2. The method according to claim 1, wherein the detection parameter comprises: an ambient temperature Te, an initial water temperature Twc, a target water temperature Tws, and the fixed parameter comprises: a rated heating energy at a rated working condition Qo, rated running time to, rated operating frequency fo and water tank water capacity m, wherein the step of calculating the operating frequency of the compressor according to the detecting parameter and the fixed parameter to obtain the frequency adjusting value of the compressor comprises:  The frequency adjustment value f is calculated by the following formula:  j _ j c - m - (Tws - Twc) ° ⁶⁰ '"' Q. , where fo is the rated operating frequency, to is the rated operating time, Qo is the rated heating energy, c is the specific heat capacity of the water, m is the water capacity of the tank, ζ is the capacity attenuation correction factor, Twc is the initial Water temperature, Tws is the target number temperature. 3. The method according to claim 2, wherein before the calculating the frequency adjustment value f by the following formula, the method further comprises: detecting a current ambient temperature; and from the correction coefficient library according to the current ambient temperature A query is performed to obtain a capability attenuation correction coefficient corresponding to the current ambient temperature. The method according to claim 1, wherein the detection parameter comprises: an ambient temperature Te, an initial water temperature Twc, a target water temperature Tws, and the fixed parameter comprises: a rated heating energy at a rated working condition Qo, rated running time to, rated operating frequency fo and water tank water capacity m, wherein calculating the operating frequency of the compressor according to the detecting parameter and the fixed parameter to obtain the frequency adjusting value of the compressor comprises: The formula calculates the frequency adjustment value f: c - m - (Tws - Twc) ° W - t. a ' Te + bY Q. , _fo is the rated operating frequency, _t0 is the rated running time, Qo is the rated heating energy, c is the specific heat capacity of water, m is the water capacity of the tank, Te is the ambient temperature, a and b are the attenuation performance of the hot water unit, Twc is The initial water temperature, Tws is the target number temperature. The method according to any one of claims 1 to 4, characterized in that the frequency adjustment value is rounded. A control device for operating frequency of a compressor, comprising: an acquiring module, configured to acquire a detection parameter and a fixed parameter;  a processing module, configured to calculate an operating frequency of the compressor according to the detection parameter and the fixed parameter to obtain a frequency adjustment value of the compressor, when the hot water heating time is fixed;  And a control module, configured to control a frequency output of the compressor according to the frequency adjustment value. The device according to claim 6, wherein the detection parameter comprises: an ambient temperature Te, an initial water temperature Twc, a target water temperature Tws, and the fixed parameter comprises: a rated heating energy at a rated working condition Qo, rated running time to, rated operating frequency fo and water tank water capacity m, wherein the processing module comprises: a first calculating module, configured to calculate the frequency adjusting value f by the following formula:  c - m - (Tws - Twc)  ° - C - Qo , where fo is the rated operating frequency and to is the rated operating time, Qo is the rated heating energy, c is the specific heat capacity of water, m is the water capacity of the tank, ζ is the correction coefficient of capacity attenuation, Twc is the initial water temperature, and Tws is the target number temperature. The device according to claim 7, wherein the device further comprises: a detecting module, configured to detect a current ambient temperature; and a query module, configured to query from the correction coefficient library according to the current ambient temperature, Obtaining a capability attenuation correction coefficient corresponding to the current ambient temperature. 9. The device according to claim 6, wherein the detection parameter comprises: an ambient temperature Te, an initial water temperature Twc, a target water temperature Tws, and the fixed parameter comprises: a rated heating energy at a rated working condition Qo, rated running time to, rated operating frequency fo and water tank water capacity m, wherein the processing module comprises: a second calculating module, configured to calculate the frequency adjusting value f by the following formula: Cm- (Tws - Twc) ° Wt. a'Te + bYQ. , _fo is the rated operating frequency, _t0 is the rated running time, Qo is the rated heating energy, c is the specific heat capacity of water, m is the water capacity of the tank, Te is the ambient temperature, a and b are the attenuation performance of the hot water unit, Twc is The initial water temperature, Tws is the target number temperature. The device according to any one of claims 6 to 9, wherein the device further comprises: a third calculating module, configured to perform rounding processing on the frequency adjustment value. A computer terminal, a program code for performing the steps provided by the control method of the compressor operating frequency according to any one of claims 1 to 5. A storage medium, the program code for executing the control method for storing the operating frequency of the compressor according to any one of claims 1 to 5.