A control method and device of a refrigeration system, the refrigeration system and a storage medium

Abstract

The application relates to a control method and device of a refrigeration system, the refrigeration system, and a storage medium. The refrigeration system is provided with a magnetic suspension compressor, a freezing pump connected with the magnetic suspension compressor, and a cooling pump connected with the magnetic suspension compressor. The method comprises the following steps: determining whether a target control instruction corresponding to the refrigeration system is received, the target control instruction being used for instructing the starting of the refrigeration system; when the target control instruction is received, controlling a magnetic suspension bearing in the magnetic suspension compressor to perform a floating shaft operation, so that a rotor in the magnetic suspension compressor is suspended; when it is determined that the rotor is in a preset suspension position, controlling the running frequency of the magnetic suspension compressor to be raised; and when it is determined that the running frequency reaches a preset frequency, controlling the freezing pump and the cooling pump to be started. The application avoids the problem that the magnetic suspension bearing in the magnetic suspension compressor is unstable when the magnetic suspension bearing controls the rotor to be suspended after the starting of the freezing pump and the cooling pump is controlled and the starting of the magnetic suspension compressor is controlled, thereby improving the reliability of the starting of the refrigeration system.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of refrigeration, and in particular to a control method and device of a refrigeration system, the refrigeration system and a storage medium. BACKGROUND

[0002] In order to improve the energy saving and service life of the refrigeration system, the compressor in the refrigeration system usually uses a magnetic suspension compressor. In the refrigeration system, the magnetic suspension compressor is connected with the cooling pump through the condenser, and the magnetic suspension compressor is also connected with the freezing pump through the evaporator. At present, when starting the refrigeration system, the cooling pump and the freezing pump are usually controlled to start first, and then the magnetic suspension compressor is controlled to start. However, the above starting method of the refrigeration system affects the reliability of the starting of the refrigeration system because the bearing in the magnetic suspension compressor has weak resistance and the magnetic suspension compressor is rigidly connected with the evaporator and the condenser. After the cooling pump and the freezing pump are started, the vibration generated by the cooling pump and the freezing pump is transmitted to the magnetic suspension compressor through the pipeline, so that the magnetic suspension bearing in the magnetic suspension compressor is unstable when controlling the rotor to float, thereby affecting the reliability of the starting of the refrigeration system. SUMMARY

[0003] The present application provides a control method and device of a refrigeration system, the refrigeration system and a storage medium to solve the problem that the magnetic suspension bearing in the magnetic suspension compressor is unstable when controlling the rotor to float, thereby affecting the reliability of the starting of the refrigeration system in the prior art.

[0004] In a first aspect, the present application provides a control method of a refrigeration system, the refrigeration system being provided with a magnetic suspension compressor, a freezing pump and a cooling pump connected with the magnetic suspension compressor, and the method comprising:

[0005] determining whether a target control instruction corresponding to the refrigeration system is received, wherein the target control instruction is used to instruct the starting of the refrigeration system;

[0006] controlling the magnetic suspension bearing in the magnetic suspension compressor to perform a floating shaft operation to make the rotor in the magnetic suspension compressor float when the target control instruction is received;

[0007] controlling the operating frequency of the magnetic suspension compressor to be raised when the rotor is determined to float to a preset floating position;

[0008] controlling the freezing pump and the cooling pump to be started when the operating frequency is determined to reach a preset frequency.

[0009] In an optional embodiment, before the step of controlling the magnetic suspension bearing in the magnetic suspension compressor to perform a floating shaft operation, the method further comprises:

[0010] determining whether the freezing pump is in the closed state and whether the cooling pump is in the closed state upon receiving the target control instruction;

[0011] controlling the magnetic bearing in the magnetic levitation compressor to perform the floating shaft operation upon determining that the freezing pump and the cooling pump are in the closed state.

[0012] In an optional embodiment, before the step of controlling the magnetic bearing in the magnetic levitation compressor to perform the floating shaft operation, the method further comprises:

[0013] determining whether the freezing pump is in the closed state and whether the cooling pump is in the closed state upon receiving the target control instruction;

[0014] controlling the freezing pump to switch to the closed state upon determining that the freezing pump is not in the closed state; and / or,

[0015] controlling the cooling pump to switch to the closed state upon determining that the cooling pump is not in the closed state.

[0016] controlling the magnetic bearing in the magnetic levitation compressor to perform the floating shaft operation upon determining that the freezing pump and the cooling pump are in the closed state.

[0017] In an optional embodiment, the refrigeration system further comprises an evaporator and a condenser, the magnetic levitation compressor and the freezing pump are connected to the evaporator, and the magnetic levitation compressor and the cooling pump are connected to the condenser.

[0018] The determination that the freezing pump is in the closed state comprises:

[0019] obtaining a first water flow rate of the evaporator at present;

[0020] determining that the freezing pump is in the closed state when the first water flow rate is less than a first preset water flow rate.

[0021] The determination that the cooling pump is in the closed state comprises:

[0022] obtaining a second water flow rate of the condenser at present;

[0023] determining that the cooling pump is in the closed state when the second water flow rate is less than a second preset water flow rate.

[0024] In an optional embodiment, the step of controlling the magnetic levitation compressor to increase the operating frequency upon determining that the rotor is levitated to the preset levitation position comprises:

[0025] determining that the rotor is in the preset levitation position for a first duration;

[0026] controlling to increase an operating frequency of the magnetic levitation compressor when the first duration is greater than or equal to a first preset duration.

[0027] In an optional implementation, after the step of controlling the magnetic levitation bearing in the magnetic levitation compressor to perform the floating shaft operation to levitate the rotor in the magnetic levitation compressor, the method further comprises:

[0028] returning to the step of controlling the magnetic levitation bearing in the magnetic levitation compressor to perform the floating shaft operation to levitate the rotor in the magnetic levitation compressor when it is determined that the rotor is not in the preset levitation position;

[0029] controlling a prompt device in the refrigeration system to work when it is determined that the rotor is still not in the preset levitation position after a second preset duration.

[0030] In an optional implementation, after the step of controlling to increase the operating frequency of the magnetic levitation compressor, the method further comprises:

[0031] returning to the step of controlling to increase the operating frequency of the magnetic levitation compressor when it is determined that the operating frequency does not reach the preset frequency;

[0032] controlling the prompt device in the refrigeration system to work when it is determined that the operating frequency still does not reach the preset frequency after a third preset duration.

[0033] In a second aspect, the application provides a control device of a refrigeration system, the refrigeration system being provided with a magnetic levitation compressor and a freezing pump and a cooling pump connected with the magnetic levitation compressor, and the device comprising:

[0034] a determining module configured to determine whether a target control instruction corresponding to the refrigeration system is received, wherein the target control instruction is used to instruct the refrigeration system to be turned on;

[0035] a control module configured to, when the target control instruction is received, control a magnetic levitation bearing in the magnetic levitation compressor to perform a floating shaft operation to levitate a rotor in the magnetic levitation compressor;

[0036] the control module is further configured to, when it is determined that the rotor is levitated to a preset levitation position, control to increase an operating frequency of the magnetic levitation compressor;

[0037] the control module is further configured to, when it is determined that the operating frequency reaches a preset frequency, control to turn on the freezing pump and the cooling pump.

[0038] In a third aspect, the present application provides a refrigeration system, comprising: a processor and a memory connected to the processor, a magnetic suspension compressor, a freezing pump and a cooling pump; the processor is configured to execute a control program of the refrigeration system stored in the memory, so as to implement the control method of the refrigeration system.

[0039] In a fourth aspect, the present application further provides a storage medium, the storage medium stores one or more programs, the one or more programs can be executed by one or more processors to implement the control method of the refrigeration system.

[0040] The above technical solutions provided by the embodiments of the present application have the following advantages compared with the prior art: the control method of the refrigeration system provided by the embodiments of the present application, when the magnetic suspension compressor and the freezing pump and the cooling pump connected to the magnetic suspension compressor are arranged in the refrigeration system, by determining whether the target control instruction corresponding to the refrigeration system is received, the target control instruction is used to instruct the start of the refrigeration system, when the target control instruction is received, the magnetic suspension bearing in the magnetic suspension compressor is controlled to perform the floating shaft operation, so that the rotor in the magnetic suspension compressor is suspended, when it is determined that the rotor is in the preset suspension position, the operation frequency of the magnetic suspension compressor is controlled to be raised, when it is determined that the operation frequency reaches the preset frequency, the freezing pump and the cooling pump are controlled to be started, so that when the refrigeration system is controlled to start, the magnetic suspension compressor is controlled to start after the magnetic suspension compressor is controlled to start stably, and then the freezing pump and the cooling pump are controlled to start, so as to avoid the problem that when the freezing pump and the cooling pump are controlled to start first and then the magnetic suspension compressor is controlled to start, the magnetic suspension bearing in the magnetic suspension compressor is unstable when controlling the rotor to be suspended, thereby improving the reliability of the start of the refrigeration system. BRIEF DESCRIPTION OF DRAWINGS

[0041] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate one embodiment consistent with the present application and, together with the description, serve to explain the principles of the application.

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows, and obviously, other drawings can also be obtained by those skilled in the art without any creative labor based on these drawings.

[0043] One or more embodiments are exemplarily illustrated by the pictures in the drawings corresponding thereto, and these exemplary illustrations do not constitute a limitation on the embodiments, and the elements with the same reference numerals in the drawings represent similar elements, unless otherwise specified, and the drawings do not constitute a proportional limitation.

[0044] Figure 1A flowchart of a control method of a refrigeration system according to an embodiment of the present application is provided.

[0045] Figure 2 A flowchart of another control method of a refrigeration system according to an embodiment of the present application is provided.

[0046] Figure 3 A mechanical structure diagram of a refrigeration system according to an embodiment of the present application is provided.

[0047] Figure 4 A structure diagram of a control device of a refrigeration system according to an embodiment of the present application is provided.

[0048] Figure 5 An electrical structure diagram of a refrigeration system according to an embodiment of the present application is provided.

[0049] In the above drawings:

[0050] 301, magnetic levitation compressor; 302, freezing pump; 303, cooling pump; 304, evaporator; 305, condenser; 306, magnetic levitation bearing; 307, rotor; 308, cooling tower;

[0051] 401, determination module; 402, control module;

[0052] 500, refrigeration system; 501, processor; 502, memory; 5021, operating system; 5022, application program; 503, user interface; 504, network interface; 505, bus system; 506, magnetic levitation compressor; 507, freezing pump; 508, cooling pump. DETAILED DESCRIPTION

[0053] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0054] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplification, the components and arrangements of the specific examples are described in the following. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to the numbers and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and it does not indicate the relationship between the various embodiments and / or arrangements discussed.

[0055] ReferenceFigure 3 , Figure 3 A mechanical structure schematic diagram of a refrigeration system is provided in the embodiment of the present application. The refrigeration system provided in the embodiment of the present application comprises a magnetic suspension compressor 301, a freezing pump 302 and a cooling pump 303. The magnetic suspension compressor 301 is connected with the freezing pump 302 and the cooling pump 303 respectively. The magnetic suspension compressor 301 is provided with a magnetic suspension bearing 306 and a rotor 307. The rotor 307 can be suspended by controlling the operation of the magnetic suspension bearing 306. The refrigeration system provided in the embodiment further comprises an evaporator 304, a condenser 305 and a cooling tower 308. The magnetic suspension compressor 301 and the freezing pump 302 are connected with the evaporator 304. The magnetic suspension compressor 301 and the cooling pump 303 are connected with the condenser 305. The cooling tower 308 is connected with the condenser 305 and the cooling pump 303. In the operation process of the refrigeration system, the magnetic suspension compressor 301 inhales gaseous refrigerant in the evaporator 304 through a suction port. After passing through the magnetic suspension compressor 301, the gaseous refrigerant becomes high-temperature and high-pressure gaseous refrigerant and is discharged into the condenser 305. The gaseous refrigerant exchanges heat with a water-cooled copper pipe, and then forms low-temperature and low-pressure liquid refrigerant after passing through a throttling valve. The liquid refrigerant absorbs heat through the copper pipe and the freezing water. The freezing water is cooled by the freezing pump 302 at the user end to realize refrigeration. The cooling pump 303 delivers cooling water to the cooling tower 308 to realize heat dissipation.

[0056] In the control of starting the above refrigeration system, if the cooling pump and the freezing pump are started first and then the magnetic suspension compressor is started, the magnetic suspension bearing in the magnetic suspension compressor will not be stable when controlling the rotor to be suspended, thereby affecting the reliability of starting the refrigeration system. Therefore, the control method of the refrigeration system provided in the embodiment of the present application is used to solve the above problems in controlling the starting of the refrigeration system, and the control method comprises the following steps.

[0057] Reference Figure 1 , Figure 1 A flowchart of the control method of the refrigeration system provided in the embodiment of the present application. The control method of the refrigeration system provided in the embodiment of the present application is applied to the refrigeration system described above. The method comprises the following steps.

[0058] S101: Determine whether a target control instruction corresponding to the refrigeration system is received; wherein the target control instruction is used to instruct the starting of the refrigeration system.

[0059] In this embodiment, the target control instruction corresponding to the refrigeration system can be generated by the user triggering. When the user needs to start the refrigeration system, the user can trigger the generation of the target control instruction by pressing the corresponding button in the remote controller related to the refrigeration system; the user can also trigger the generation of the target control instruction by touching or clicking the control related to the start of the refrigeration system on the display panel in the refrigeration system. The generation mode of the target control instruction in this embodiment can be set according to actual needs, and the generation mode of the target control instruction in this embodiment is not limited. After receiving the target control instruction corresponding to the refrigeration system, the following S102 step-S104 step is executed to control the start of the refrigeration system, so as to improve the reliability of the start of the refrigeration system.

[0060] S102: When the target control instruction is received, the magnetic suspension bearing in the magnetic suspension compressor is controlled to perform the floating shaft operation, so that the rotor in the magnetic suspension compressor is suspended.

[0061] In this embodiment, after receiving the control instruction, the start of the refrigeration pump and the cooling pump does not need to be controlled first, and the start of the refrigeration pump and the cooling pump needs to be controlled after the magnetic suspension compressor is started and stabilized, so as to improve the reliability of the start of the refrigeration system. When the magnetic suspension compressor is controlled to start and stabilize, the magnetic suspension bearing needs to be controlled to work first, so that the rotor in the magnetic suspension compressor is suspended to a preset suspension position. During the control of the magnetic suspension bearing to work, the suspension position of the rotor needs to be detected in real time, and when the suspension position of the rotor reaches the preset suspension position, the suspension position of the rotor is maintained at the preset suspension position. Since the refrigeration pump and the cooling pump are not started at this time, the rotor in the magnetic suspension compressor can be easily suspended to the preset suspension position. The preset suspension position can be set according to actual needs, and the preset suspension position is not limited in this embodiment.

[0062] S103: When it is determined that the rotor is suspended to the preset suspension position, the operating frequency of the magnetic suspension compressor is controlled to be increased.

[0063] In this embodiment, when it is determined that the rotor is suspended to the preset suspension position, the suspension position of the rotor can be maintained at the preset suspension position. When it is determined that the rotor is not suspended to the preset suspension position, the step of controlling the magnetic suspension bearing in the magnetic suspension compressor to perform the floating shaft operation to suspend the rotor in the magnetic suspension compressor in S102 is executed, so that the rotor is finally suspended to the preset suspension position. In order to ensure the stability of the start of the magnetic suspension compressor, the operating frequency of the magnetic suspension compressor is controlled to be increased to a preset frequency in this embodiment.

[0064] S104: When it is determined that the operating frequency reaches the preset frequency, the refrigeration pump and the cooling pump are controlled to be started.

[0065] In the embodiment, during the process of controlling the increase of the operation frequency of the magnetic suspension compressor, it is needed to detect whether the operation frequency of the magnetic suspension compressor reaches the preset frequency in real time, and after the operation frequency of the magnetic suspension compressor reaches the preset frequency, the refrigeration pump and the cooling pump are controlled to be started. When the operation frequency of the magnetic suspension compressor does not reach the preset frequency, the control of the increase of the operation frequency of the magnetic suspension compressor in S103 is returned to be executed until the final operation frequency of the magnetic suspension compressor reaches the preset frequency.

[0066] S105: When the target control instruction is not received, the step S101 is returned to be executed.

[0067] In the embodiment, when the target control instruction is not received, the step S101 is returned to be continuously executed until the target control instruction is finally received, and the steps S102 to S104 are executed.

[0068] The control method of the refrigeration system provided in the embodiment is used when the magnetic suspension compressor and the refrigeration pump and the cooling pump connected with the magnetic suspension compressor are arranged in the refrigeration system. The target control instruction corresponding to the refrigeration system is determined whether it is received or not. The target control instruction is used to instruct the start of the refrigeration system. When the target control instruction is received, the magnetic suspension bearing in the magnetic suspension compressor is controlled to perform the floating shaft operation, so that the rotor in the magnetic suspension compressor is suspended. When it is determined that the rotor is in the preset suspension position, the operation frequency of the magnetic suspension compressor is controlled to be increased. When it is determined that the operation frequency reaches the preset frequency, the refrigeration pump and the cooling pump are controlled to be started. Therefore, when the refrigeration system is controlled to be started, the magnetic suspension compressor is controlled to be started stably, and then the refrigeration pump and the cooling pump are controlled to be started. The problem that the magnetic suspension bearing in the magnetic suspension compressor is unstable when the rotor is suspended is avoided after the refrigeration pump and the cooling pump are controlled to be started. The reliability of the start of the refrigeration system is improved.

[0069] Reference Figure 2 , Figure 2 The flowchart of another control method of a refrigeration system provided in the embodiment is shown. The control method of the refrigeration system provided in the embodiment comprises the following steps:

[0070] S201: It is determined whether the target control instruction corresponding to the refrigeration system is received or not. The target control instruction is used to instruct the start of the refrigeration system.

[0071] In the embodiment, the step S201 is consistent with the step S101. The step S201 is not described in the embodiment, and the specific content can be referred to the above description.

[0072] S202: When the target control instruction is received, it is determined whether the refrigeration pump is in the closed state and whether the cooling pump is in the closed state.

[0073] S203: when it is determined that the freezing pump is not in the closed state, controlling the freezing pump to switch to the closed state; and / or, when it is determined that the cooling pump is not in the closed state, controlling the cooling pump to switch to the closed state.

[0074] S204: when it is determined that the freezing pump and the cooling pump are both in the closed state, controlling the magnetic suspension bearing in the magnetic suspension compressor to perform the floating shaft operation, so that the rotor in the magnetic suspension compressor is suspended.

[0075] In this embodiment, for steps S202 to S204, in order to avoid the problem that when the target control instruction is received, the magnetic suspension bearing in the magnetic suspension compressor is controlled to suspend the rotor, which is unstable and affects the reliability of the refrigeration system startup, it is necessary to determine whether the freezing pump and the cooling pump are closed before controlling the magnetic suspension compressor to start. When the freezing pump and / or the cooling pump are not closed, the freezing pump and / or the cooling pump can be controlled to be closed, and after the freezing pump and the cooling pump are both controlled to be closed, the magnetic suspension bearing in the magnetic suspension compressor is controlled to perform the floating shaft operation, so that the rotor in the magnetic suspension compressor is suspended. In the case where the freezing pump and the cooling pump are both closed, the magnetic suspension bearing in the magnetic suspension compressor is directly controlled to perform the floating shaft operation, so that the rotor in the magnetic suspension compressor is suspended. The step of controlling the magnetic suspension bearing in the magnetic suspension compressor to perform the floating shaft operation, so that the rotor in the magnetic suspension compressor is suspended can refer to the above description, and will not be repeated here.

[0076] The determination of whether the freezing pump is in the closed state comprises:

[0077] Obtaining the current first water flow of the evaporator;

[0078] Determining whether the first water flow is less than a first preset water flow;

[0079] When the first water flow is less than the first preset water flow, it is determined that the freezing pump is in the closed state;

[0080] When the first water flow is greater than or equal to the first preset water flow, it is determined that the freezing pump is not in the closed state.

[0081] Specifically, a water flow sensor can be arranged in the evaporator, and the current first water flow of the evaporator is collected by the water flow sensor, so that the state of the freezing pump is determined according to the collected first water flow. The first preset water flow can be set according to actual needs, and the specific value of the first preset water flow is not limited in this embodiment.

[0082] The determination of whether the cooling pump is in the closed state comprises:

[0083] Obtaining the current second water flow of the condenser;

[0084] determining whether the second water flow rate is less than a second preset water flow rate;

[0085] determining that the cooling pump is in the off state when the second water flow rate is less than the second preset water flow rate;

[0086] determining that the cooling pump is not in the off state when the second water flow rate is greater than or equal to the second preset water flow rate.

[0087] Specifically, a water flow rate sensor can be arranged in the condenser, and the current second water flow rate of the condenser is collected by the water flow rate sensor, so that the state of the cooling pump is determined according to the collected second water flow rate. The second preset water flow rate can be set according to actual needs, and the specific value of the second preset water flow rate is not limited in the embodiment.

[0088] S205: determining whether the rotor is in a preset suspension position.

[0089] S206: returning to execute the S204 step when it is determined that the rotor is not in the preset suspension position.

[0090] For the S205 step and the S206 step described above, in the process of controlling the rotor suspension in the magnetic suspension compressor, it is necessary to detect in real time whether the rotor is in the preset suspension position, and when the rotor is not in the preset suspension position, it is necessary to return to the S204 step to continue to control the magnetic suspension bearing in the magnetic suspension compressor to execute the floating shaft operation, so that the rotor suspension step in the magnetic suspension compressor is executed.

[0091] In order to avoid affecting the user's experience due to the rotor not being in the preset suspension position all the time caused by the magnetic suspension compressor failure, when it is determined that the rotor is not in the preset suspension position, the step of controlling the magnetic suspension bearing in the magnetic suspension compressor to execute the floating shaft operation is executed so that the rotor suspension step in the magnetic suspension compressor is executed. It is determined whether the rotor is in the preset suspension position within a second preset time length, and when the rotor is in the preset suspension position within the second preset time length, the following S207 step is executed. When the rotor is still not in the preset suspension position after the second preset time length, a prompt device in the refrigeration system is controlled to work. The second preset time length can be set according to actual needs, and the specific value of the second preset time length is not limited in the embodiment. When the rotor is still not in the preset suspension position after the second preset time length, it indicates that the rotor has not been successfully suspended to the preset suspension position all the time due to the internal failure of the magnetic suspension compressor. Therefore, the user needs to be prompted to handle the failure at this time. The prompt device can be a buzzer, an indicator light, and a voice device, and the prompt device can be set according to actual needs, and the specific form of the prompt device is not limited in the embodiment.

[0092] S207: When it is determined that the rotor is in the preset levitation position, determine a first duration that the rotor is in the preset levitation position.

[0093] S208: Determine whether the first duration is greater than or equal to a first preset duration.

[0094] S209: When the first duration is greater than or equal to the first preset duration, control the operating frequency of the magnetic levitation compressor to be increased.

[0095] S210: When the first duration is less than the first preset duration, return to perform S204.

[0096] For the above S207 to S209, in order to ensure the stability of the magnetic levitation compressor startup, when it is determined that the rotor is in the preset levitation position, the first duration that the rotor is in the preset position is determined, and the first duration is compared with the first preset duration. When the first duration is greater than or equal to the first preset duration, it indicates that the rotor is stably maintained in the preset levitation position at this time, and the operating frequency of the magnetic levitation compressor is controlled to be increased at this time, which can ensure the stability of the magnetic levitation compressor startup. When the first duration is less than the first preset duration, it indicates that the rotor cannot be stably maintained in the preset levitation position at this time, and needs to return to S204 for further levitation control of the rotor, so that the first duration that the rotor is in the preset levitation position is greater than the first preset duration, thereby ensuring the stability of the magnetic levitation compressor startup. The first preset duration can be set according to actual needs, and the specific value of the first preset duration is not limited in the embodiment.

[0097] S211: Determine whether the operating frequency of the magnetic levitation compressor reaches a preset frequency.

[0098] S212: When it is determined that the operating frequency of the magnetic levitation compressor does not reach the preset frequency, return to perform S209.

[0099] S213: When it is determined that the operating frequency of the magnetic levitation compressor reaches the preset frequency, control the refrigeration pump and the cooling pump to be started.

[0100] In the process of controlling the increase of the operating frequency of the magnetic suspension compressor, the operating frequency of the magnetic suspension compressor needs to be detected in real time to determine whether the operating frequency reaches the preset frequency. When the operating frequency of the magnetic suspension compressor reaches the preset frequency, the rotor is stably maintained at the preset suspension position, thereby ensuring the starting stability of the magnetic suspension compressor. At this time, the refrigeration pump and the cooling pump are controlled to be turned on. When the operating frequency of the magnetic suspension compressor does not reach the preset frequency, the step S209 is returned to continue to control the increase of the operating frequency of the magnetic suspension compressor. Until the operating frequency of the magnetic suspension compressor finally reaches the preset frequency, the refrigeration pump and the cooling pump are controlled to be turned on. The preset frequency can be set according to actual needs, and the specific value of the preset frequency is not limited in the embodiment.

[0101] In order to avoid the influence on the user experience caused by the fact that the operating frequency of the magnetic suspension compressor does not reach the preset frequency due to the fault of the magnetic suspension compressor, when it is determined that the operating frequency of the magnetic suspension compressor does not reach the preset frequency, the step of controlling the increase of the operating frequency of the magnetic suspension compressor is returned to be executed. It is determined whether the operating frequency of the magnetic suspension compressor reaches the preset frequency within a third preset time length. When the operating frequency of the magnetic suspension compressor reaches the preset frequency within the third preset time length, the step S213 is executed. When the operating frequency of the magnetic suspension compressor still does not reach the preset frequency after the third preset time length, a prompt device in the refrigeration system is controlled to work. The third preset time length can be set according to actual needs, and the specific value of the third preset time length is not limited in the embodiment. When the operating frequency of the magnetic suspension compressor still does not reach the preset frequency after the third preset time length, it is indicated that the operating frequency of the magnetic suspension compressor still does not reach the preset frequency due to the internal fault of the magnetic suspension compressor. Therefore, the user needs to be prompted to handle the fault at this time. The prompt device can be a buzzer, an indicator light and a voice device. The prompt device can be set according to actual needs, and the specific form of the prompt device is not limited in the embodiment.

[0102] S214: When the target control instruction is not received, the step S201 is returned to be executed.

[0103] In the embodiment, the step S214 is consistent with the step S105 described above, and the specific process can be referred to the description above, which is not described herein again.

[0104] The control method of the refrigeration system provided in the embodiment is used when the magnetic suspension compressor and the freezing pump and the cooling pump connected with the magnetic suspension compressor are arranged in the refrigeration system. The control method comprises the following steps: determining whether a target control instruction corresponding to the refrigeration system is received, the target control instruction being used for indicating the start of the refrigeration system; when the target control instruction is received, controlling the magnetic suspension bearing in the magnetic suspension compressor to perform a floating shaft operation, so that the rotor in the magnetic suspension compressor is suspended; when it is determined that the rotor is in a preset suspension position, controlling the operating frequency of the magnetic suspension compressor to be increased; and when it is determined that the operating frequency reaches a preset frequency, controlling the freezing pump and the cooling pump to be started. Therefore, when the refrigeration system is controlled to start, the magnetic suspension compressor is first controlled to start and stabilize, and then the freezing pump and the cooling pump are controlled to start. Thus, the problem that the magnetic suspension bearing in the magnetic suspension compressor is unstable when the rotor is suspended after the freezing pump and the cooling pump are first controlled to start and then the magnetic suspension compressor is controlled to start is avoided. Therefore, the reliability of the start of the refrigeration system is improved.

[0105] Reference Figure 4 , Figure 4 A structural schematic diagram of a control device of a refrigeration system is provided in the embodiment. The magnetic suspension compressor and the freezing pump and the cooling pump connected with the magnetic suspension compressor are arranged in the refrigeration system. The control device of the refrigeration system comprises a determination module 401 and a control module 402. The determination module 401 is used for determining whether a target control instruction corresponding to the refrigeration system is received. The target control instruction is used for indicating the start of the refrigeration system. The control module 402 is used for controlling the magnetic suspension bearing in the magnetic suspension compressor to perform a floating shaft operation when the target control instruction is received, so that the rotor in the magnetic suspension compressor is suspended. The control module 402 is further used for controlling the operating frequency of the magnetic suspension compressor to be increased when it is determined that the rotor is suspended to a preset suspension position. The control module 402 is further used for controlling the freezing pump and the cooling pump to be started when it is determined that the operating frequency reaches a preset frequency.

[0106] In the embodiment, the control module 402 is further used for:

[0107] determining whether the freezing pump is in an off state and whether the cooling pump is in the off state when the target control instruction is received;

[0108] controlling the magnetic suspension bearing in the magnetic suspension compressor to perform a floating shaft operation when it is determined that the freezing pump and the cooling pump are in the off state.

[0109] In the embodiment, the control module 402 is further used for:

[0110] determining whether the freezing pump is in a closed state and whether the cooling pump is in the closed state upon receiving the target control instruction;

[0111] controlling the freezing pump to switch to the closed state upon determining that the freezing pump is not in the closed state; and / or,

[0112] controlling the cooling pump to switch to the closed state upon determining that the cooling pump is not in the closed state;

[0113] controlling the magnetic suspension bearing in the magnetic suspension compressor to perform a floating shaft operation upon determining that the freezing pump and the cooling pump are both in the closed state.

[0114] In this embodiment, the refrigeration system is further provided with an evaporator and a condenser, and the magnetic suspension compressor and the freezing pump are both connected to the evaporator, and the magnetic suspension compressor and the cooling pump are both connected to the condenser.

[0115] In this embodiment, the determining module 401 is further configured to:

[0116] acquire a first water flow of the evaporator at present;

[0117] determine that the freezing pump is in the closed state upon determining that the first water flow is less than a first preset water flow.

[0118] In this embodiment, the determining module 401 is further configured to:

[0119] acquire a second water flow of the condenser at present;

[0120] determine that the cooling pump is in the closed state upon determining that the second water flow is less than a second preset water flow.

[0121] In this embodiment, the controlling module 402 is further configured to:

[0122] control the magnetic suspension bearing in the magnetic suspension compressor to perform a floating shaft operation to make the rotor in the magnetic suspension compressor levitate upon determining that the rotor is not in the preset levitation position;

[0123] control a prompting device in the refrigeration system to work upon determining that the rotor is still not in the preset levitation position after a second preset time length;

[0124] In this embodiment, the controlling module 402 is further configured to control the operating frequency of the magnetic suspension compressor to be raised upon determining that the operating frequency does not reach the preset frequency.

[0125] When it is determined that the running frequency has not reached the preset frequency after the third preset time length, a prompting device in the refrigeration system is controlled to work.

[0126] The control device of the refrigeration system provided by the embodiment of the present application, when the magnetic suspension compressor, the freezing pump and the cooling pump connected with the magnetic suspension compressor are arranged in the refrigeration system, determines whether the target control instruction corresponding to the refrigeration system is received, the target control instruction is used to instruct the start of the refrigeration system, when the target control instruction is received, controls the magnetic suspension bearing in the magnetic suspension compressor to perform the floating shaft operation, so that the rotor in the magnetic suspension compressor is suspended, when it is determined that the rotor is in the preset suspension position, controls the running frequency of the magnetic suspension compressor to be raised, when it is determined that the running frequency reaches the preset frequency, controls the freezing pump and the cooling pump to be started, so that when the refrigeration system is controlled to start, the magnetic suspension compressor is controlled to start stably first, and then the freezing pump and the cooling pump are controlled to start, so as to avoid the problem that when the freezing pump and the cooling pump are controlled to start first and then the magnetic suspension compressor is controlled to start, the magnetic suspension bearing in the magnetic suspension compressor is unstable when controlling the rotor to be suspended, thereby improving the reliability of the start of the refrigeration system.

[0127] Figure 5 Another electrical structure schematic diagram of the refrigeration system provided by the embodiment of the present application is provided, Figure 5 The refrigeration system 500 shown includes at least one processor 501, a memory 502, at least one network interface 504, other user interfaces 503, a magnetic suspension compressor 506, a freezing pump 505 and a cooling pump 506. Each component in the refrigeration system 500 is coupled together through a bus system 505. It can be understood that the bus system 505 is used to realize the connection communication between the components. The bus system 505 includes not only a data bus, but also a power supply bus, a control bus and a state signal bus. However, for the purpose of clear illustration, all kinds of buses are marked as the bus system 505 in the Figure 5

[0128] The user interface 503 can include a display, a keyboard or a clicking device (for example, a mouse, a trackball, a touchpad or a touch screen, etc.).

[0129] ​It is to be understood that the memory 502 in embodiments of the present application can be volatile or nonvolatile memory, or can include both volatile and nonvolatile memory. The nonvolatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable PROM (EPROM), electrically EPROM (EEPROM), or flash memory, among others. The volatile memory can be random access memory (RAM), used as external cache. By way of example, and not limitation, many forms of RAM are available, for example, static RAM (SRAM), dynamic RAM (DRAM), synchronous dynamic RAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and direct Rambus RAM (DRRAM). Memory 502 described herein is intended to include, without being limited to, these and any other suitable types of memory.

[0130] In some embodiments, the memory 502 stores the following elements, executable units or data structures, or a subset of them, or an extended set of them: an operating system 5021 and application programs 5022.

[0131] The operating system 5021 contains various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application programs 5022 contain various application programs, such as a media player, a browser, etc., for implementing various application services. The programs implementing the methods of embodiments of the present application can be included in the application programs 5022.

[0132] In the embodiments of the present application, the processor 501 is configured to execute the method steps provided by the embodiments of the present application by invoking the programs or instructions stored in the memory 502, specifically, the programs or instructions stored in the application program 5022. For example, the processor 501 is configured to execute the method steps provided by the embodiments of the present application, including: determining whether a target control instruction corresponding to the refrigeration system is received, the target control instruction being used to instruct the refrigeration system to start; when the target control instruction is received, controlling the magnetic suspension bearing in the magnetic suspension compressor to perform a floating shaft operation, so that the rotor in the magnetic suspension compressor is suspended; when it is determined that the rotor is in a preset suspension position, controlling the operation frequency of the magnetic suspension compressor to be raised; and when it is determined that the operation frequency reaches a preset frequency, controlling the refrigeration pump and the cooling pump to start.

[0133] The method disclosed in the embodiments of the present application can be applied to the processor 501 or implemented by the processor 501. The processor 501 can be an integrated circuit chip having a signal processing capability. In the implementation process, each step of the above method can be completed by an integrated logic circuit or an instruction in the form of software in the processor 501. The processor 501 disclosed above can be a general processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. Each method, step and logic block diagram disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as a hardware code processor for execution, or a combination of hardware and software units in the code processor for execution. The software unit can be located in a random access memory, a flash memory, a read only memory, a programmable read only memory or an electrically erasable programmable memory, a register or other mature storage media in the art. The storage medium is located in the memory 502, and the processor 501 reads the information in the memory 502 and combines the hardware to complete the steps of the above method.

[0134] It can be understood that the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing units can be implemented within one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSP Devices, DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units designed to perform the functions described herein, or a combination thereof.

[0135] For software implementation, the techniques described herein can be implemented with a processing unit that executes program code that includes functions described herein. The program code can be stored in a memory that is either within the processor or external to the processor.

[0136] The refrigeration system provided by the embodiments can be a refrigeration system as shown in Figure 5 The refrigeration system provided by the embodiments can be a refrigeration system as shown in Figures 1-2 The refrigeration system provided by the embodiments can be a refrigeration system as shown in Figures 1-2 The refrigeration system provided by the embodiments can be a refrigeration system as shown in Figures 1-2 The refrigeration system provided by the embodiments can be a refrigeration system as shown in

[0137] The embodiments of the present application further provide a storage medium (computer readable storage medium). The storage medium stores one or more programs. The storage medium can include a volatile memory, such as a random access memory, and / or can include a non-volatile memory, such as a read-only memory, a flash memory, a hard disk drive, or a solid-state drive. The storage medium can also include a combination of the above-mentioned types of memories.

[0138] When the one or more programs stored in the storage medium are executed by the one or more processors, the above-mentioned control method of the refrigeration system executed at the control device side of the refrigeration system can be implemented.

[0139] The processor is configured to execute a control program of the refrigeration system stored in the memory to implement the following steps of the control method of the refrigeration system executed at the control device side of the refrigeration system: determining whether a target control instruction corresponding to the refrigeration system is received, the target control instruction being used to instruct the opening of the refrigeration system; when the target control instruction is received, controlling the magnetic suspension bearing in the magnetic suspension compressor to perform a floating shaft operation to make the rotor in the magnetic suspension compressor suspended; when it is determined that the rotor is at a preset suspension position, controlling the operating frequency of the magnetic suspension compressor to be raised; and when it is determined that the operating frequency reaches a preset frequency, controlling the refrigeration pump and the cooling pump to be opened.

[0140] Those skilled in the art should further appreciate that the units and algorithm steps of each example described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, various components and steps have been described above generally in terms of their functionality, without limitation. The particular implementation of a component or step depends on the particular application and design constraints imposed on the overall system. Skilled persons can implement the described functionality in varying ways for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

[0141] The steps of a method or algorithm described in connection with the embodiments disclosed herein can be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module can reside in random access memory (RAM), memory, read-only memory (ROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0142] The above detailed description sets forth the purposes, technical solutions, and beneficial effects of the present application. It should be understood that the above description is merely a specific implementation of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A control method of a refrigeration system, characterized by, The refrigeration system is provided with a magnetic suspension compressor, a freezing pump connected with the magnetic suspension compressor and a cooling pump connected with the magnetic suspension compressor, and the method comprises the following steps: It is determined whether the target control instruction corresponding to the refrigeration system is received; wherein the target control instruction is used to indicate the opening of the refrigeration system; When the target control instruction is received, it is determined whether the freezing pump is in the closed state and whether the cooling pump is in the closed state; When it is determined that the freezing pump and the cooling pump are in the closed state, the magnetic suspension bearing in the magnetic suspension compressor is controlled to perform the floating shaft operation, so that the rotor in the magnetic suspension compressor is suspended, and the suspension position of the rotor is detected in real time during the operation of the magnetic suspension bearing; When it is determined that the rotor is suspended to the preset suspension position, the operating frequency of the magnetic suspension compressor is controlled to be increased; When it is determined that the operating frequency reaches the preset frequency, the freezing pump and the cooling pump are controlled to be started.

2. The method of claim 1, wherein, Before the step of controlling the magnetic suspension bearing in the magnetic suspension compressor to perform the floating shaft operation, the method further comprises the following steps: When it is determined that the freezing pump is not in the closed state, the freezing pump is controlled to switch to the closed state; and / or, When it is determined that the cooling pump is not in the closed state, the cooling pump is controlled to switch to the closed state.

3. The method according to claim 2 or 1, characterized in that, The refrigeration system is further provided with an evaporator and a condenser, the magnetic suspension compressor and the freezing pump are connected with the evaporator, and the magnetic suspension compressor and the cooling pump are connected with the condenser; The determination that the freezing pump is in the closed state comprises the following steps: The current first water flow of the evaporator is acquired; When the first water flow is less than the first preset water flow, it is determined that the freezing pump is in the closed state; The determination that the cooling pump is in the closed state comprises the following steps: The current second water flow of the condenser is acquired; When the second water flow is less than the second preset water flow, it is determined that the cooling pump is in the closed state.

4. The method of claim 1, wherein, The step of controlling the operating frequency of the magnetic suspension compressor to be increased when it is determined that the rotor is suspended to the preset suspension position comprises the following steps: When it is determined that the rotor is suspended to the preset suspension position, it is determined that the rotor is in the first duration of the preset suspension position; When the first duration is greater than or equal to the first preset duration, the operating frequency of the magnetic suspension compressor is controlled to be increased.

5. The method of claim 1, wherein, After the step of controlling the magnetic suspension bearing in the magnetic suspension compressor to perform the floating shaft operation so that the rotor in the magnetic suspension compressor is suspended, the method further comprises the following steps: When it is determined that the rotor is not in the preset suspension position, the step of controlling the magnetic suspension bearing in the magnetic suspension compressor to perform the floating shaft operation so that the rotor in the magnetic suspension compressor is suspended is returned to be executed; When it is determined that the rotor is still not in the preset suspension position after the second preset duration, the prompting device in the refrigeration system is controlled to work.

6. The method of claim 1, wherein, After the step of controlling the operating frequency of the magnetic suspension compressor to be increased, the method further comprises the following steps: determining that the running frequency does not reach the preset frequency, returning to perform the step of controlling to increase the running frequency of the magnetic suspension compressor; determining that the running frequency does not reach the preset frequency after a third preset time period, controlling a prompt device in the refrigeration system to work.

7. A control device for a refrigeration system, characterized by The refrigeration system is provided with a magnetic suspension compressor, a freezing pump and a cooling pump connected with the magnetic suspension compressor, and the device comprises: a determining module configured to determine whether a target control instruction corresponding to the refrigeration system is received, wherein the target control instruction is used to instruct the refrigeration system to be turned on; a control module configured to, when the target control instruction is received, determine whether the freezing pump is in a closed state and whether the cooling pump is in the closed state, and control a magnetic suspension bearing in the magnetic suspension compressor to perform a floating shaft operation so that a rotor in the magnetic suspension compressor is suspended, and detect a suspension position of the rotor in real time during the operation of the magnetic suspension bearing; the control module is further configured to, when the rotor is suspended to a preset suspension position, control to increase a running frequency of the magnetic suspension compressor; the control module is further configured to, when the running frequency reaches a preset frequency, control to turn on the freezing pump and the cooling pump.

8. A refrigeration system comprising: a processor, a memory connected with the processor, a magnetic suspension compressor, a freezing pump and a cooling pump; the processor is used to execute a control program of the refrigeration system stored in the memory, so as to realize the control method of the refrigeration system according to any one of claims 1 to 6. 9.A storage medium, the storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement the control method of the refrigeration system according to any one of claims 1 to 6.

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