Refrigerator double-compressor control system and control method

Abstract

The invention discloses a control method and system for double compressors of a refrigerator. The control method comprises the steps that a refrigerator operation mode is set, a target temperature value and a target air pressure value are set, and a real-time temperature value and a real-time air pressure value in a space are detected; if the refrigeration mode is set, the first compressor is controlled to start, and the rotating speed of the first compressor is controlled according to the target temperature value and the real-time temperature value, and if the oxygen generation mode is set, the second compressor is controlled to start, and the rotating speed of the second compressor is controlled according to the target air pressure value and the real-time air pressure value. According to the technical scheme, the operation mode of the refrigerator is set in the mode selection step, and the rotating speed values of the first compressor and the second compressor are calculated according to the operation mode of the refrigerator, all target parameter values and all real-time parameter values in the control step; according to the technical scheme, the operation parameters of the two compressors are comprehensively controlled, the intelligent linkage function and the hardware resource sharing function are achieved, integrated design is easy to achieve, and the space utilization rate can be increased.

Description

Technical Field

[0001] The present invention relates to the field of intelligent control technology, and more specifically to a refrigerator dual compressor control system and a control method. Background Art

[0002] There are already devices on the market that can independently realize refrigeration functions and oxygen production functions, both of which use compressors as core components.

[0003] In real life, there are two operations that need to be performed in a certain space: cooling and adding oxygen. Therefore, it is necessary to use oxygen production equipment and refrigeration equipment at the same time to achieve the corresponding functions. Since the two devices use different compressors to work, this leads to a waste of space, energy and cost. Summary of the invention

[0004] In order to solve the above technical problems, the object of the present invention is to provide a refrigerator dual compressor control system and a control method.

[0005] The technical solution adopted by the present invention to solve the problem is:

[0006] A refrigerator dual compressor control method, the refrigerator includes a first compressor and a second compressor, the control method includes the following steps:

[0007] A mode selection step, setting a refrigerator operation mode, wherein the operation mode includes a refrigeration mode and an oxygen production mode;

[0008] Parameter setting steps: setting the target temperature value and the target air pressure value;

[0009] Parameter detection step, detecting the real-time temperature value and real-time air pressure value in the space;

[0010] The control step includes: if the operation mode is set to the cooling mode, controlling the first compressor to start, and controlling the speed of the first compressor according to the target temperature value and the real-time temperature value; if the operation mode is set to the oxygen production mode, controlling the second compressor to start, and controlling the speed of the second compressor according to the target air pressure value and the real-time air pressure value.

[0011] As a further improvement of the above technical solution, in the mode selection step, the operating mode also includes a switching mode;

[0012] The parameter setting step also includes setting a parameter priority type, and the parameter priority type includes air pressure and temperature;

[0013] In the control step, when the parameter priority type is set to temperature and the real-time temperature value does not reach the target temperature value, the first compressor is controlled to start, and the speed of the first compressor is controlled according to the target temperature value and the real-time temperature value;

[0014] In the control step, when the parameter priority type is set to temperature, and the real-time temperature value reaches the target temperature value, and the real-time air pressure value does not reach the target air pressure value, the second compressor is controlled to start, and the speed of the second compressor is controlled according to the target air pressure value and the real-time air pressure value;

[0015] In the control step, when the parameter priority type is set to air pressure, and the real-time air pressure value does not reach the target air pressure value, the second compressor is controlled to start, and the speed of the second compressor is controlled according to the target air pressure value and the real-time air pressure value;

[0016] In the control step, when the parameter priority type is set to air pressure, and the real-time air pressure value reaches the target air pressure value, and the real-time temperature value does not reach the target temperature value, the first compressor is controlled to start, and the speed of the first compressor is controlled according to the target temperature value and the real-time temperature value.

[0017] As a further improvement of the above technical solution, in the control step, the speed of the first compressor is controlled by controlling the duty cycle of the PWM signal of the first compressor, and the speed of the second compressor is controlled by controlling the duty cycle of the PWM signal of the second compressor.

[0018] As a further improvement of the above technical solution, the parameter setting step also includes setting a maximum load value, a maximum temperature value and a maximum air pressure value;

[0019] The parameter detection step further includes detecting the dynamic load value and the dynamic temperature value of the first compressor and the second compressor, and detecting the dynamic air pressure values ​​at multiple locations of the refrigerator;

[0020] The control method further comprises:

[0021] A fault identification step is to output an alarm signal when the dynamic load value exceeds the maximum load value, or the dynamic temperature value exceeds the maximum temperature value, or the dynamic air pressure value at at least one point of the refrigerator exceeds the maximum air pressure value.

[0022] The present invention also discloses a refrigerator dual compressor control system, the refrigerator comprises a main controller, a first compressor and a second compressor, the main controller is connected to the first compressor and the second compressor respectively, the main controller comprises:

[0023] A mode selection module, used to set the refrigerator operation mode, wherein the operation mode includes a refrigeration mode and an oxygen production mode;

[0024] Parameter setting module, used to set target temperature value and target air pressure value;

[0025] Parameter detection module, used to detect the real-time temperature value and real-time air pressure value in the space;

[0026] a control module, for controlling the start-up of the first compressor if the operating mode is set to the cooling mode, and controlling the speed of the first compressor according to the target temperature value and the real-time temperature value; and for controlling the start-up of the second compressor if the operating mode is set to the oxygen production mode, and controlling the speed of the second compressor according to the target air pressure value and the real-time air pressure value.

[0027] As a further improvement of the above technical solution, in the mode selection module, the operation mode also includes a switching mode;

[0028] The parameter setting module also includes a module for setting parameter priority types, and the parameter priority types include air pressure and temperature;

[0029] In the control module, when the parameter priority type is set to temperature and the real-time temperature value does not reach the target temperature value, the first compressor is controlled to start, and the speed of the first compressor is controlled according to the target temperature value and the real-time temperature value;

[0030] In the control module, when the parameter priority type is set to temperature, and the real-time temperature value reaches the target temperature value, and the real-time air pressure value does not reach the target air pressure value, the second compressor is controlled to start, and the speed of the second compressor is controlled according to the target air pressure value and the real-time air pressure value;

[0031] In the control module, when the parameter priority type is set to air pressure, and the real-time air pressure value does not reach the target air pressure value, the second compressor is controlled to start, and the speed of the second compressor is controlled according to the target air pressure value and the real-time air pressure value;

[0032] In the control module, when the parameter priority type is set to air pressure, and the real-time air pressure value reaches the target air pressure value, and the real-time temperature value does not reach the target temperature value, the first compressor is controlled to start, and the speed of the first compressor is controlled according to the target temperature value and the real-time temperature value.

[0033] As a further improvement of the above technical solution, in the control module, the speed of the first compressor is controlled by controlling the duty cycle of the PWM signal of the first compressor, and the speed of the second compressor is controlled by controlling the duty cycle of the PWM signal of the second compressor.

[0034] As a further improvement of the above technical solution, the parameter setting module also includes a module for setting a maximum load value, a maximum temperature value and a maximum air pressure value;

[0035] The parameter detection module also includes a module for detecting the dynamic load value and the dynamic temperature value of the first compressor and the second compressor, and detecting the dynamic air pressure values ​​at multiple locations of the refrigerator;

[0036] The main controller also includes:

[0037] The fault identification module is used to output an alarm signal when the dynamic load value exceeds the maximum load value, or the dynamic temperature value exceeds the maximum temperature value, or the dynamic air pressure value at at least one point of the refrigerator exceeds the maximum air pressure value.

[0038] The beneficial effects of the present invention are as follows: in the technical solution, the operating mode of the refrigerator is set in the mode selection step, and in the control step, the speed values ​​of the first compressor and the second compressor are set according to the operating mode of the refrigerator, various target parameter values ​​and various real-time parameter values; the technical solution comprehensively controls the operating parameters of the two compressors, realizes the intelligent linkage function and the hardware resource sharing function, is easy to realize the integrated design, and is conducive to improving the space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present invention will be further explained below in conjunction with the accompanying drawings and specific implementation methods.

[0040] Figure 1 It is a flow chart of the control method in the present invention. DETAILED DESCRIPTION

[0041] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0042] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] In the description of the present invention, the meaning of "several" is one or more, the meaning of "more" is more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of the first and the second, it is only for the purpose of distinguishing the technical features, and it cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features. In the description of the present invention, unless otherwise clearly defined, the terms such as "set", "install", and "connect" should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meaning of the above terms in the present invention in combination with the specific content of the technical solution.

[0044] Reference Figure 1 The present application discloses a dual compressor control method for a refrigerator, wherein the refrigerator comprises a first compressor and a second compressor. The first embodiment of the control method comprises the following steps:

[0045] A mode selection step, setting a refrigerator operation mode, wherein the operation mode includes a refrigeration mode and an oxygen production mode;

[0046] Parameter setting steps: setting the target temperature value and the target air pressure value;

[0047] Parameter detection step, detecting the real-time temperature value and real-time air pressure value in the space;

[0048] The control step includes: if the operation mode is set to the cooling mode, controlling the first compressor to start, and controlling the speed of the first compressor according to the target temperature value and the real-time temperature value; if the operation mode is set to the oxygen production mode, controlling the second compressor to start, and controlling the speed of the second compressor according to the target air pressure value and the real-time air pressure value.

[0049] Specifically, in this embodiment, the operating mode of the refrigerator is set in the mode selection step, and the speed values ​​of the first compressor and the second compressor are set according to the operating mode of the refrigerator, various target parameter values ​​and various real-time parameter values ​​in the control step; this embodiment comprehensively controls the operating parameters of the two compressors, realizes the intelligent linkage function and the hardware resource sharing function, is easy to realize integrated design, and is conducive to improving space utilization.

[0050] Further as a preferred implementation, in this embodiment, in the mode selection step, the operation mode also includes a switching mode;

[0051] The parameter setting step also includes setting a parameter priority type, and the parameter priority type includes air pressure and temperature;

[0052] In the control step, when the parameter priority type is set to temperature and the real-time temperature value does not reach the target temperature value, the first compressor is controlled to start, and the speed of the first compressor is controlled according to the target temperature value and the real-time temperature value;

[0053] In the control step, when the parameter priority type is set to temperature, and the real-time temperature value reaches the target temperature value, and the real-time air pressure value does not reach the target air pressure value, the second compressor is controlled to start, and the speed of the second compressor is controlled according to the target air pressure value and the real-time air pressure value;

[0054] In the control step, when the parameter priority type is set to air pressure, and the real-time air pressure value does not reach the target air pressure value, the second compressor is controlled to start, and the speed of the second compressor is controlled according to the target air pressure value and the real-time air pressure value;

[0055] In the control step, when the parameter priority type is set to air pressure, and the real-time air pressure value reaches the target air pressure value, and the real-time temperature value does not reach the target temperature value, the first compressor is controlled to start, and the speed of the first compressor is controlled according to the target temperature value and the real-time temperature value.

[0056] In the present embodiment, a parameter priority satisfaction mechanism is provided. When the temperature parameter needs to be satisfied first, the real-time application gives priority to ensuring that the real-time temperature value reaches the target temperature value. When the real-time temperature value reaches the target temperature value, the real-time air pressure value is considered whether it reaches the target air pressure value. When the air pressure parameter needs to be satisfied first, the real-time application gives priority to ensuring that the real-time air pressure value reaches the target air pressure value. When the real-time air pressure value reaches the target air pressure value, the real-time application gives priority to ensuring that the real-time air pressure value reaches the target air pressure value.

[0057] Further as a preferred implementation, in this embodiment, in the control step, the speed of the first compressor is controlled by controlling the duty cycle of the PWM signal of the first compressor, and the speed of the second compressor is controlled by controlling the duty cycle of the PWM signal of the second compressor.

[0058] As a further preferred implementation, in this embodiment, the parameter setting step further includes setting a maximum load value, a maximum temperature value, and a maximum air pressure value;

[0059] The parameter detection step further includes detecting the dynamic load value and the dynamic temperature value of the first compressor and the second compressor, and detecting the dynamic air pressure values ​​at multiple locations of the refrigerator;

[0060] This embodiment also includes:

[0061] A fault identification step is to output an alarm signal when the dynamic load value exceeds the maximum load value, or the dynamic temperature value exceeds the maximum temperature value, or the dynamic air pressure value at at least one point of the refrigerator exceeds the maximum air pressure value.

[0062] In this embodiment, the safety protection mechanism of the refrigerator is implemented through the fault identification step. When a real-time parameter value exceeds the corresponding set maximum value, an alarm signal is output to the outside, thereby improving the safety of the refrigerator.

[0063] The present application also discloses a refrigerator dual compressor control system. In a first embodiment, the refrigerator includes a main controller, a first compressor and a second compressor. The main controller is connected to the first compressor and the second compressor respectively. The main controller includes:

[0064] A mode selection module, used to set the refrigerator operation mode, wherein the operation mode includes a refrigeration mode and an oxygen production mode;

[0065] Parameter setting module, used to set target temperature value and target air pressure value;

[0066] Parameter detection module, used to detect the real-time temperature value and real-time air pressure value in the space;

[0067] a control module, for controlling the start-up of the first compressor if the operating mode is set to the cooling mode, and controlling the speed of the first compressor according to the target temperature value and the real-time temperature value; and for controlling the start-up of the second compressor if the operating mode is set to the oxygen production mode, and controlling the speed of the second compressor according to the target air pressure value and the real-time air pressure value.

[0068] Further as a preferred implementation, in this embodiment, in the mode selection module, the operation mode also includes a switching mode;

[0069] The parameter setting module also includes a module for setting parameter priority types, and the parameter priority types include air pressure and temperature;

[0070] In the control module, when the parameter priority type is set to temperature and the real-time temperature value does not reach the target temperature value, the first compressor is controlled to start, and the speed of the first compressor is controlled according to the target temperature value and the real-time temperature value;

[0071] In the control module, when the parameter priority type is set to temperature, and the real-time temperature value reaches the target temperature value, and the real-time air pressure value does not reach the target air pressure value, the second compressor is controlled to start, and the speed of the second compressor is controlled according to the target air pressure value and the real-time air pressure value;

[0072] In the control module, when the parameter priority type is set to air pressure, and the real-time air pressure value does not reach the target air pressure value, the second compressor is controlled to start, and the speed of the second compressor is controlled according to the target air pressure value and the real-time air pressure value;

[0073] In the control module, when the parameter priority type is set to air pressure, and the real-time air pressure value reaches the target air pressure value, and the real-time temperature value does not reach the target temperature value, the first compressor is controlled to start, and the speed of the first compressor is controlled according to the target temperature value and the real-time temperature value.

[0074] Further as a preferred implementation, in this embodiment, in the control module, the speed of the first compressor is controlled by controlling the duty cycle of the PWM signal of the first compressor, and the speed of the second compressor is controlled by controlling the duty cycle of the PWM signal of the second compressor.

[0075] As a further preferred implementation, in this embodiment, the parameter setting module also includes a module for setting a maximum load value, a maximum temperature value, and a maximum air pressure value;

[0076] The parameter detection module also includes a module for detecting the dynamic load value and the dynamic temperature value of the first compressor and the second compressor, and detecting the dynamic air pressure values ​​at multiple locations of the refrigerator;

[0077] The main controller also includes:

[0078] The fault identification module is used to output an alarm signal when the dynamic load value exceeds the maximum load value, or the dynamic temperature value exceeds the maximum temperature value, or the dynamic air pressure value at at least one point of the refrigerator exceeds the maximum air pressure value.

[0079] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly or indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A method for controlling dual compressors of a refrigerator, wherein the refrigerator comprises a first compressor and a second compressor, wherein: The following steps are involved: A mode selection step, setting a refrigerator operation mode, wherein the operation mode includes a refrigeration mode and an oxygen production mode; Parameter setting steps: setting the target temperature value and the target air pressure value; Parameter detection step, detecting the real-time temperature value and real-time air pressure value in the space; The control step includes: if the operation mode is set to the cooling mode, controlling the first compressor to start, and controlling the speed of the first compressor according to the target temperature value and the real-time temperature value; if the operation mode is set to the oxygen production mode, controlling the second compressor to start, and controlling the speed of the second compressor according to the target air pressure value and the real-time air pressure value.

2. A refrigerator dual compressor control method according to claim 1, characterized in that: In the mode selection step, the operation mode also includes a switching mode; The parameter setting step also includes setting a parameter priority type, and the parameter priority type includes air pressure and temperature; In the control step, when the parameter priority type is set to temperature and the real-time temperature value does not reach the target temperature value, the first compressor is controlled to start, and the speed of the first compressor is controlled according to the target temperature value and the real-time temperature value; In the control step, when the parameter priority type is set to temperature, and the real-time temperature value reaches the target temperature value, and the real-time air pressure value does not reach the target air pressure value, the second compressor is controlled to start, and the speed of the second compressor is controlled according to the target air pressure value and the real-time air pressure value; In the control step, when the parameter priority type is set to air pressure, and the real-time air pressure value does not reach the target air pressure value, the second compressor is controlled to start, and the speed of the second compressor is controlled according to the target air pressure value and the real-time air pressure value; In the control step, when the parameter priority type is set to air pressure, and the real-time air pressure value reaches the target air pressure value, and the real-time temperature value does not reach the target temperature value, the first compressor is controlled to start, and the speed of the first compressor is controlled according to the target temperature value and the real-time temperature value.

3. A refrigerator dual compressor control method according to claim 1, characterized in that: In the control step, the rotation speed of the first compressor is controlled by controlling the duty ratio of the PWM signal of the first compressor, and the rotation speed of the second compressor is controlled by controlling the duty ratio of the PWM signal of the second compressor.

4. A refrigerator dual compressor control method according to claim 1 or 2, characterized in that: The parameter setting step also includes setting a maximum load value, a maximum temperature value, and a maximum air pressure value; The parameter detection step further includes detecting the dynamic load value and the dynamic temperature value of the first compressor and the second compressor, and detecting the dynamic air pressure values ​​at multiple locations of the refrigerator; The control method further comprises: A fault identification step is to output an alarm signal when the dynamic load value exceeds the maximum load value, or the dynamic temperature value exceeds the maximum temperature value, or the dynamic air pressure value at at least one point of the refrigerator exceeds the maximum air pressure value.

5. A refrigerator dual compressor control system, the refrigerator comprising a main controller, a first compressor and a second compressor, the main controller being connected to the first compressor and the second compressor respectively, characterized in that: The main controller comprises: A mode selection module, used to set the refrigerator operation mode, wherein the operation mode includes a refrigeration mode and an oxygen production mode; Parameter setting module, used to set target temperature value and target air pressure value; Parameter detection module, used to detect the real-time temperature value and real-time air pressure value in the space; a control module, for controlling the start-up of the first compressor if the operating mode is set to the cooling mode, and controlling the speed of the first compressor according to the target temperature value and the real-time temperature value; and for controlling the start-up of the second compressor if the operating mode is set to the oxygen production mode, and controlling the speed of the second compressor according to the target air pressure value and the real-time air pressure value.

6. A refrigerator dual compressor control system according to claim 5, characterized in that: In the mode selection module, the operation mode also includes a switching mode; The parameter setting module also includes a module for setting parameter priority types, and the parameter priority types include air pressure and temperature; In the control module, when the parameter priority type is set to temperature and the real-time temperature value does not reach the target temperature value, the first compressor is controlled to start, and the speed of the first compressor is controlled according to the target temperature value and the real-time temperature value; In the control module, when the parameter priority type is set to temperature, and the real-time temperature value reaches the target temperature value, and the real-time air pressure value does not reach the target air pressure value, the second compressor is controlled to start, and the speed of the second compressor is controlled according to the target air pressure value and the real-time air pressure value; In the control module, when the parameter priority type is set to air pressure, and the real-time air pressure value does not reach the target air pressure value, the second compressor is controlled to start, and the speed of the second compressor is controlled according to the target air pressure value and the real-time air pressure value; In the control module, when the parameter priority type is set to air pressure, and the real-time air pressure value reaches the target air pressure value, and the real-time temperature value does not reach the target temperature value, the first compressor is controlled to start, and the speed of the first compressor is controlled according to the target temperature value and the real-time temperature value.

7. A refrigerator dual compressor control system according to claim 5, characterized in that: In the control module, the rotation speed of the first compressor is controlled by controlling the duty ratio of the PWM signal of the first compressor, and the rotation speed of the second compressor is controlled by controlling the duty ratio of the PWM signal of the second compressor.

8. A refrigerator dual compressor control system according to claim 5 or 6, characterized in that: The parameter setting module also includes a module for setting a maximum load value, a maximum temperature value, and a maximum air pressure value; The parameter detection module also includes a module for detecting the dynamic load value and the dynamic temperature value of the first compressor and the second compressor, and detecting the dynamic air pressure values ​​at multiple locations of the refrigerator; The main controller also includes: The fault identification module is used to output an alarm signal when the dynamic load value exceeds the maximum load value, or the dynamic temperature value exceeds the maximum temperature value, or the dynamic air pressure value at at least one point of the refrigerator exceeds the maximum air pressure value.

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