Control method, device and equipment of water chilling unit and medium

Abstract

The invention discloses a control method, device and equipment of a water chilling unit and a medium, and relates to the technical field of refrigeration. Under the condition that the current environment temperature value is detected to be smaller than the preset value, the compressor is controlled to be started after the heating belt is heated for a certain period of time; the heating duration of the heating belt is determined by considering the power-off duration of the unit, so that the heating belt can be fully heated, it is guaranteed that refrigerants and lubricating oil in the compressor are fully mixed, and the situation that the refrigerants are accumulated at the bottom of the compressor under the low-temperature condition due to the too low environment temperature is avoided; the normal work of the compressor is ensured, and the reliability of the unit is improved; and determining the current to-be-heated time length of the heating band corresponding to the current environment interval range and the current power-off time length according to the pre-established relationship among the environment temperature interval range, the unit power-off time length and the to-be-heated time length of the heating band, so that the determined to-be-heated time length is more accurate.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration technology, and in particular to a control method, device, equipment and medium for a chiller. Background Art

[0002] With the rapid development of industry and commerce, the demand for efficient and reliable refrigeration systems is growing. Chillers are a common refrigeration equipment. In the process of implementing the present invention, the inventors found that there are at least the following technical problems in the prior art:

[0003] In related cold-type chillers, the compressor is usually turned on directly according to user needs without considering the distribution of refrigerant and lubricating oil in the compressor, resulting in the risk of suction liquid and excessive viscosity of the lubricating oil in the compressor, affecting the normal operation of the compressor.

[0004] It can be seen that providing a new control method for a chiller to ensure that the compressor can work normally is a technical problem that needs to be solved urgently by people in this field. Summary of the invention

[0005] The purpose of the present invention is to provide a control method, device, equipment and medium for a chiller, so as to at least solve the technical problem that the compressor is turned on directly according to the user's needs without considering the distribution of refrigerant and lubricating oil in the compressor, resulting in the risk of suction liquid and excessive viscosity of the lubricating oil in the compressor, thereby affecting the normal operation of the compressor.

[0006] In order to solve the above technical problems, the present invention provides a control method for a chiller, comprising:

[0007] Get the current ambient temperature value and the preset compressor start requirement;

[0008] When it is detected that the current ambient temperature value is less than a preset value, obtaining the current power-off duration of the unit and the current ambient range to which the current ambient temperature value belongs;

[0009] Determine the current heating time of the heating belt corresponding to the current environmental range and the current power-off time according to the relationship between the pre-established environmental temperature range, the power-off time of the unit and the heating time of the heating belt;

[0010] After controlling the heating belt to heat the current heating time, the start-up of the compressor is controlled according to the preset start-up requirement of the compressor.

[0011] Exemplarily, obtaining the current ambient temperature value includes:

[0012] Get the current ambient temperature value collected by the temperature sensor;

[0013] Before obtaining the current ambient temperature value and the preset compressor start requirement, the method further includes:

[0014] Determining whether the temperature sensor is operating normally;

[0015] If yes, then enter the step of obtaining the current ambient temperature value and the preset compressor start requirement;

[0016] If not, the current outlet water temperature value is obtained, and the state of the compressor is controlled according to the current outlet water temperature value; wherein the state of the compressor includes an on state or an off state.

[0017] Exemplarily, determining whether the temperature sensor works normally includes:

[0018] When the heating belt is powered on and initialized and / or when the compressor is powered on and initialized, determining whether the temperature sensor is operating normally;

[0019] After controlling the state of the compressor according to the current outlet water temperature value, the method further includes:

[0020] The state of the heating belt is controlled to be opposite to the current state of the compressor.

[0021] Exemplarily, after controlling the heating belt to heat the current heating time, and controlling the start of the compressor according to a preset compressor start requirement, the method further includes:

[0022] Obtaining the current state of the compressor;

[0023] The state of the heating belt is controlled to be opposite to the current state of the compressor.

[0024] Exemplarily, the lower limit of the ambient temperature range is negatively correlated with the heating time of the heating belt, and the power-off time of the unit is positively correlated with the heating time of the heating belt.

[0025] Exemplarily, the control method of the chiller further includes:

[0026] When it is detected that the current ambient temperature value is greater than or equal to the preset value, the heating belt is controlled to be in an off state and the compressor is controlled to start according to the preset compressor start requirement.

[0027] Exemplarily, after the heating belt is controlled to be in an off state and the compressor is controlled to be started according to the preset compressor start demand when it is detected that the current ambient temperature value is greater than or equal to the preset value, or after the heating belt is controlled to heat the current heating time, the compressor is controlled to be started according to the preset compressor start demand, the method further includes:

[0028] Return to the step of obtaining the current ambient temperature value and the preset compressor start requirement.

[0029] In order to solve the above technical problems, the present invention further provides a control device for a chiller, comprising:

[0030] A first acquisition module is used to obtain the current ambient temperature value and the preset compressor start requirement;

[0031] A second acquisition module is used to acquire the current power-off duration of the unit and the current environmental interval range to which the current environmental temperature value belongs when it is detected that the current environmental temperature value is less than a preset value;

[0032] A determination module, used to determine the current heating time of the heating belt corresponding to the current environmental interval range and the current power-off duration according to the relationship between the pre-established environmental temperature interval range, the unit power-off duration and the heating time of the heating belt;

[0033] The control module is used to control the heating belt to heat the current heating time and then control the start of the compressor according to the preset compressor start requirement.

[0034] In order to solve the above technical problems, the present invention further provides a control device for a chiller, comprising:

[0035] Memory for storing computer programs;

[0036] The processor is used to implement the steps of the above-mentioned chiller control method when executing the computer program.

[0037] In order to solve the above technical problem, the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above-mentioned chiller control method are implemented.

[0038] In the control method of the chiller provided by the present invention, firstly, in the process of controlling the start-up of the compressor, the compressor is not started directly according to the user's demand, but the ambient temperature value is taken into consideration and when it is detected that the current ambient temperature value is less than the preset value, the compressor is controlled to start after the heating belt is heated for a certain period of time, thereby ensuring that there is no stratification of the refrigerant and the lubricating oil in the compressor, avoiding the risk of the refrigerant accumulating at the bottom of the compressor under low temperature conditions due to the low ambient temperature, the risk of the compressor starting up with liquid in the air, and the risk of the lubricating oil being too high, thereby ensuring that the compressor can work normally and improving the reliability of the unit; secondly, in addition to considering the ambient temperature value, the unit's off-line conditions are also taken into consideration. The heating time of the heating belt is determined by the power-on time, so that the heating belt can be fully heated, thereby ensuring that the refrigerant and lubricating oil in the compressor are fully mixed, and further enabling the compressor to work normally; thirdly, the current heating time of the heating belt corresponding to the current environmental interval and the current power-off time is determined according to the pre-established relationship between the ambient temperature range, the unit power-off time and the heating time of the heating belt, so that the determined heating time is more accurate; in addition, compared with the method of directly using a temperature sensor to detect the temperature of the lubricating oil inside the compressor, the method provided by the present invention collects the ambient temperature value outside the compressor, which reduces the difficulty and cost of detection.

[0039] In addition, the present invention also provides a control device for a chiller, a control equipment for a chiller, and a computer-readable storage medium, which have the same or corresponding technical features as the above-mentioned control method for a chiller, and have the same effects as above. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] FIG1 is a schematic diagram of a water chiller provided by an embodiment of the present invention;

[0042] FIG2 is a flow chart of a method for controlling a chiller provided by an embodiment of the present invention;

[0043] FIG3 is a structural diagram of a control device for a chiller provided in another embodiment of the present invention. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] The core of the present invention is to provide a control method, device, equipment and medium for a chiller, so as to at least solve the technical problem that the compressor is turned on directly according to the user's needs without considering the distribution of the refrigerant and lubricating oil in the compressor, resulting in the risk of suction liquid and excessive viscosity of the lubricating oil in the compressor, thus affecting the normal operation of the compressor.

[0046] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. FIG1 is a schematic diagram of a chiller provided by an embodiment of the present invention. As shown in FIG1 , the chiller includes a return water temperature sensor, a mode converter, a compressor, and a condenser. A heating belt is wrapped around the oil chamber of the compressor. FIG2 is a flow chart of a control method for a chiller provided by an embodiment of the present invention. As shown in FIG2 , the method includes:

[0047] S10: Obtaining the current ambient temperature value and the preset compressor start requirement;

[0048] S11: When it is detected that the current ambient temperature value is less than a preset value, the current power-off duration of the unit and the current ambient temperature range to which the current ambient temperature value belongs are obtained;

[0049] S12: Determine the current heating time of the heating belt corresponding to the current environmental range and the current power-off time according to the relationship between the pre-established environmental temperature range, the power-off time of the unit and the heating time of the heating belt;

[0050] S13: After controlling the heating belt to heat the current heating time, the compressor is controlled to start according to the preset compressor start requirement.

[0051] There is no limitation on the method of obtaining the current ambient temperature value, such as directly obtaining the temperature value on the terminal device, or setting a temperature sensor in the unit to obtain the temperature value collected by the temperature sensor. There is no limitation on the preset compressor start requirement, which is determined according to the actual needs of the user.

[0052] In order to avoid the stratification of refrigerant and lubricating oil in the compressor, the method provided in the embodiment of the present invention takes into account the current ambient temperature value and the power-off duration of the unit. First, the relationship between the current ambient temperature value and the preset value is detected. There is no limitation on the preset value, as long as it is ensured as much as possible that when the ambient temperature value is greater than or equal to the preset value, the refrigerant and lubricating oil will not be stratified in the compressor. For the situation where the current ambient temperature value is less than the preset value, the method provided in the present invention requires turning on the heating belt around the oil chamber of the compressor to heat the oil chamber so that the refrigerant and lubricating oil of the compressor are mixed.

[0053] For the case where the current ambient temperature value is less than the preset value, assuming that the heating belt is started for a fixed duration, if the current ambient temperature value is less than the preset value and is not much different from the preset value, when a longer heating duration is set, the energy consumption of the unit will increase; if the current ambient temperature value is less than the preset value and is significantly different from the preset value, when a shorter heating duration is set, the refrigerant and lubricating oil of the compressor cannot be fully mixed through the heating of the heating belt, affecting the normal operation of the compressor. Therefore, in the embodiment of the present invention, for the case where the ambient temperature value is less than the preset value, the ambient temperature interval range is further divided.

[0054] In addition, the current power-off duration of the unit is also obtained, and then the current heating time of the heating belt is determined according to the current power-off duration of the unit and the current environmental interval range to which the current temperature value belongs. Among them, the lower limit value of the environmental temperature interval range is negatively correlated with the heating time of the heating belt, and the power-off duration of the unit is positively correlated with the heating time of the heating belt. The heating belt is controlled to heat the current heating time. After controlling the heating belt to heat the current heating time, the start of the compressor is controlled according to the preset compressor start requirement.

[0055] In the control method of the chiller provided in the present embodiment, firstly, in the process of controlling the start-up of the compressor, the compressor is not started directly according to the user's demand, but the ambient temperature value is taken into consideration and when it is detected that the current ambient temperature value is less than the preset value, the compressor is controlled to start after the heating belt is heated for a certain period of time, thereby ensuring that there is no stratification of the refrigerant and the lubricating oil in the compressor, avoiding the risk of the refrigerant accumulating at the bottom of the compressor under low temperature conditions due to the low ambient temperature, the risk of the compressor starting up with liquid in the air, and the risk of the lubricating oil being too high, thereby ensuring that the compressor can work normally; secondly, in addition to considering the ambient temperature value, the power-off time of the unit is also taken into consideration to ensure The heating time of the heating belt is determined so that the heating belt can be fully heated, thereby ensuring that the refrigerant and lubricating oil in the compressor are fully mixed, and further enabling the compressor to work normally; thirdly, the current heating time of the heating belt corresponding to the current environmental interval and the current power-off time is determined according to the pre-established relationship between the ambient temperature range, the unit power-off time and the heating belt, so that the determined heating time is more accurate; in addition, compared with the method of directly using a temperature sensor to detect the temperature of the lubricating oil inside the compressor, the method provided in this embodiment collects the ambient temperature value outside the compressor, which reduces the difficulty and cost of detection.

[0056] When obtaining the current ambient temperature value, the current ambient temperature value collected by the temperature sensor can be obtained. In practice, the temperature sensor may work normally or not. Therefore, before obtaining the current ambient temperature value and the preset compressor start requirement, it also includes:

[0057] Determine whether the temperature sensor is working properly;

[0058] If yes, then enter the step of obtaining the current ambient temperature value and the preset compressor start requirement;

[0059] If not, the current outlet water temperature value is obtained, and the state of the compressor is controlled according to the current outlet water temperature value; wherein the state of the compressor includes an on state or an off state.

[0060] The outlet water temperature value can be collected by the return water temperature sensor in Figure 1. When the current outlet water temperature value is greater than the preset temperature value, the compressor can be controlled to be in the on state; when the outlet water temperature value is less than or equal to the preset temperature value, the compressor can be controlled to be in the off state.

[0061] In order to achieve effective control of the chiller, when the heating belt is powered on and initialized and / or when the compressor is powered on and initialized, it is determined whether the temperature sensor is working normally.

[0062] In addition, in order to reduce the power consumption of the unit, after controlling the state of the compressor according to the current outlet water temperature value, it also includes:

[0063] The state of the heating belt is controlled to be opposite to the current state of the compressor.

[0064] After the compressor is started, if the heating belt is always in working state, the energy consumption of the unit will increase. Therefore, after controlling the heating belt to heat the current heating time, after controlling the start of the compressor according to the preset compressor start demand, it also includes:

[0065] Get the current status of the compressor;

[0066] The state of the heating belt is controlled to be opposite to the current state of the compressor.

[0067] The above describes a control method for a chiller when the current ambient temperature is less than a preset value. When the current ambient temperature is greater than or equal to the preset value, the heating belt is controlled to be in an off state and the compressor is controlled to start according to the preset compressor start requirement.

[0068] When the current ambient temperature is greater than or equal to the preset value, not starting the heating belt can effectively reduce the standby power of the unit, thereby improving the energy efficiency throughout the year, and can reduce the safety problems caused by local overheating caused by the heating belt working due to excessively high ambient temperature.

[0069] In order to realize the real-time control of the chiller, after the heating belt is controlled to be in the closed state and the compressor is controlled to be started according to the preset compressor start demand when the current ambient temperature value is detected to be greater than or equal to the preset value, or after the heating belt is controlled to heat the current heating time, the compressor is controlled to be started according to the preset compressor start demand, and further includes:

[0070] Return to the step of obtaining the current ambient temperature value and the preset compressor start requirement.

[0071] In order to enable those skilled in the art to better understand the scheme of the present invention, an embodiment of the control method of the chiller provided by the embodiment of the present invention is described below from the control logic of the heating belt and the control logic of the compressor.

[0072] From the control logic of the heating belt, the control method of the chiller includes the following steps:

[0073] 1. When the heater belt is powered on and initialized, check whether the ambient temperature sensor fails. If the device fails, the heater belt and compressor status will be reversed (that is, the heater belt will be turned off after the compressor reaches the opening requirement, and the heater belt will be turned on after the compressor reaches the closing requirement).

[0074] 2. If the power is turned on and initialized, check that the ambient temperature sensor is operating normally.

[0075] ① When the feedback value of the ambient temperature sensor is greater than or equal to T01, the heating belt does not operate, and the compressor can be turned on and operated according to the compressor start demand;

[0076] ② The feedback value of the ambient temperature sensor is less than T01 and greater than or equal to T02, and the unit power-off duration is greater than or equal to T5. The heating belt needs to be preheated for T1 time first, and then switched to execute the reverse control logic with the compressor;

[0077] ③ The feedback value of the ambient temperature sensor is less than T02 and greater than or equal to T03, and the unit power-off duration is greater than or equal to T6. The heating belt needs to be preheated for T2 time first, and then switched to execute the reverse control logic with the compressor;

[0078] ④ If the feedback value of the ambient temperature sensor is less than T03 and greater than or equal to T04, and the unit power-off duration is greater than or equal to T7, the heating belt needs to be preheated for T3 time first, and then switched to execute the reverse control logic with the compressor;

[0079] ⑤ The feedback value of the ambient temperature sensor is less than T04 and greater than or equal to T05, and the unit power-off duration is greater than or equal to T8. The heating belt needs to first perform preheating for T4 time, and then switch to and execute the reverse control logic with the compressor.

[0080] Among the above temperature values, the values ​​from T01 to T05 gradually decrease, the values ​​from T5 to T8 gradually increase, and the values ​​from T1 to T4 gradually increase.

[0081] From the control logic of the compressor, the control method of the chiller includes the following steps:

[0082] 1. During power-on initialization, check whether the ambient temperature sensor fails. If the ambient temperature sensor fails but the outlet water high temperature alarm is triggered, the compressor will operate normally according to the opening and closing requirements.

[0083] 2. The ambient temperature sensor is operating normally:

[0084] ① The feedback value of the ambient temperature sensor is greater than or equal to T01, and the compressor operates normally according to the opening or closing requirements;

[0085] ② The feedback value of the ambient temperature sensor is less than T01 and greater than or equal to T02. The heating belt first executes the heating logic for T1 time and then the compressor starts running;

[0086] ③ The feedback value of the ambient temperature sensor is less than T02 and greater than or equal to T03. The heating belt first executes the heating logic for T2 time and then the compressor starts running;

[0087] ④ The feedback value of the ambient temperature sensor is less than T03 and greater than or equal to T04. The heating belt first executes the heating logic for T3 time and then the compressor starts running;

[0088] ⑤ The feedback value of the ambient temperature sensor is less than T04 and greater than or equal to T05. The heating belt first executes the heating logic for T4 time and then the compressor starts running.

[0089] Among the above temperature values, the values ​​from T01 to T05 gradually decrease, and the values ​​from T1 to T4 gradually increase.

[0090] In the above method, the state of the refrigerant lubricating oil at the bottom of the compressor can be determined according to the feedback value of the ambient temperature sensor and the power supply status of the unit, so as to avoid the risk of refrigerant accumulating at the bottom of the compressor under low temperature conditions due to too low ambient temperature and the length of time the heating belt is running, and the compressor starting to inhale liquid; when the unit is powered off, the heating belt cannot work normally, and the compressor will also have stratification of refrigerant and lubricating oil in the compressor under low ambient temperature. In the method provided by the embodiment of the present invention, the time when the refrigerant accumulates at the bottom of the compressor at different ambient temperatures is different. The pre-execution time of the heating belt and the operation status of the compressor are determined according to the power off time and the ambient temperature, which can ensure the rapid startup and reliability of the compressor when it is powered on again, and reduce the power consumption of the whole machine; when the feedback value of the ambient temperature sensor is greater than or equal to the preset value, the heating belt does not run, which effectively reduces the standby power of the unit and thus improves the energy efficiency throughout the year, and can reduce the safety problems caused by local overheating caused by the operation of the heating belt due to excessively high ambient temperature.

[0091] In the above embodiments, the control method of the chiller is described in detail, and the present invention also provides a control device of the chiller and a corresponding embodiment of the control equipment of the chiller. It should be noted that the present invention describes the embodiments of the device part from two perspectives, one is based on the functional module perspective, and the other is based on the hardware perspective.

[0092] An embodiment of the present invention provides a control device for a chiller. This embodiment is based on the perspective of functional modules. The control device for the chiller includes:

[0093] A first acquisition module is used to obtain the current ambient temperature value and the preset compressor start requirement;

[0094] The second acquisition module is used to acquire the current power-off duration of the unit and the current environmental interval range to which the current environmental temperature value belongs when it is detected that the current environmental temperature value is less than a preset value;

[0095] A determination module, used to determine the current heating time of the heating belt corresponding to the current environmental interval range and the current power-off duration according to the relationship between the pre-established environmental temperature interval range, the unit power-off duration and the heating time of the heating belt;

[0096] The control module is used to control the heating belt to heat the current heating time and then control the start of the compressor according to the preset compressor start requirement.

[0097] In some embodiments, the first acquisition module specifically includes an acquisition submodule for acquiring the current ambient temperature value;

[0098] The acquisition submodule is specifically used to obtain the current ambient temperature value collected by the temperature sensor.

[0099] The chiller control device also includes:

[0100] A judgment module, used to judge whether the temperature sensor works normally; if so, trigger the first acquisition module; if not, trigger the acquisition and control module;

[0101] The acquisition and control module is used to acquire the current outlet water temperature value and control the state of the compressor according to the current outlet water temperature value; wherein the state of the compressor includes an on state or an off state.

[0102] In some embodiments, the control device of the chiller further comprises:

[0103] The first control module is used to control the state of the heating belt to be opposite to the current state of the compressor.

[0104] In some embodiments, the control device of the chiller further comprises:

[0105] A third acquisition module is used to acquire the current state of the compressor;

[0106] The second control module is used to control the state of the heating belt to be opposite to the current state of the compressor.

[0107] In some embodiments, the control device of the chiller further comprises:

[0108] The third control module is used to control the heating belt to be in an off state and to control the start-up of the compressor according to a preset compressor start-up requirement when it is detected that the current ambient temperature value is greater than or equal to a preset value.

[0109] Since the embodiments of the device part correspond to the embodiments of the method part, please refer to the description of the embodiments of the method part for the embodiments of the device part, and they will not be repeated here. The effects are the same as above.

[0110] FIG3 is a structural diagram of a control device for a chiller provided by another embodiment of the present invention. Based on the hardware perspective, as shown in FIG3 , the control device for the chiller includes:

[0111] A memory 20, used for storing computer programs;

[0112] The processor 21 is used to implement the steps of the chiller control method mentioned in the above embodiment when executing the computer program.

[0113] Among them, the processor 21 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 21 can be implemented in at least one hardware form of a digital signal processor (DSP), a field-programmable gate array (FPGA), and a programmable logic array (PLA). The processor 21 may also include a main processor and a coprocessor. The main processor is a processor for processing data in the awake state, also known as a central processing unit (CPU); the coprocessor is a low-power processor for processing data in the standby state. In some embodiments, the processor 21 may be integrated with a graphics processing unit (GPU), which is responsible for rendering and drawing the content to be displayed on the display screen. In some embodiments, the processor 21 may also include an artificial intelligence (AI) processor, which is used to process computing operations related to machine learning.

[0114] The memory 20 may include one or more computer-readable storage media, which may be non-transitory. The memory 20 may also include a high-speed random access memory, and a non-volatile memory, such as one or more disk storage devices, flash memory storage devices. In this embodiment, the memory 20 is at least used to store the following computer program 201, wherein, after the computer program is loaded and executed by the processor 21, it can implement the relevant steps of the control method of the chiller disclosed in any of the aforementioned embodiments. In addition, the resources stored in the memory 20 may also include an operating system 202 and data 203, etc., and the storage method may be temporary storage or permanent storage. Among them, the operating system 202 may include Windows, Unix, Linux, etc. The data 203 may include, but is not limited to, the data involved in the control method of the chiller mentioned above.

[0115] In some embodiments, the control device of the chiller may further include a display screen 22 , an input / output interface 23 , a communication interface 24 , a power supply 25 , and a communication bus 26 .

[0116] Those skilled in the art will appreciate that the structure shown in FIG. 3 does not constitute a limitation on the control device of the chiller and may include more or fewer components than those shown in the figure.

[0117] The control device of the chiller provided in the embodiment of the present invention includes a memory and a processor. When the processor executes the program stored in the memory, it can implement the following method: the control method of the chiller, the effect is the same as above.

[0118] Finally, the present invention also provides an embodiment corresponding to a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps recorded in the above method embodiment are implemented.

[0119] It is understandable that if the method in the above embodiment is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium to execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc. Various media that can store program codes.

[0120] The computer-readable storage medium provided by the present invention includes the above-mentioned control method for a chiller, and has the same effect as above.

[0121] The control method, device, equipment and medium of a chiller provided by the present invention are introduced in detail above. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the present invention.

[0122] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

Claims

1. A control method for a chiller, characterized in that: include: Get the current ambient temperature value and the preset compressor start requirement; When it is detected that the current ambient temperature value is less than a preset value, obtaining the current power-off duration of the unit and the current ambient range to which the current ambient temperature value belongs; Determine the current heating time of the heating belt corresponding to the current environmental range and the current power-off time according to the relationship between the pre-established environmental temperature range, the power-off time of the unit and the heating time of the heating belt; After controlling the heating belt to heat the current heating time, the start-up of the compressor is controlled according to the preset start-up requirement of the compressor.

2. The control method of the chiller according to claim 1, characterized in that: The obtaining of the current ambient temperature value comprises: Get the current ambient temperature value collected by the temperature sensor; Before obtaining the current ambient temperature value and the preset compressor start requirement, the method further includes: Determining whether the temperature sensor is operating normally; If yes, then enter the step of obtaining the current ambient temperature value and the preset compressor start requirement; If not, the current outlet water temperature value is obtained, and the state of the compressor is controlled according to the current outlet water temperature value; wherein the state of the compressor includes an on state or an off state.

3. The control method of the chiller according to claim 2, characterized in that: The determining whether the temperature sensor is operating normally includes: When the heating belt is powered on and initialized and / or when the compressor is powered on and initialized, determining whether the temperature sensor is operating normally; After controlling the state of the compressor according to the current outlet water temperature value, the method further includes: The state of the heating belt is controlled to be opposite to the current state of the compressor.

4. The control method for a chiller according to any one of claims 1 to 3, characterized in that: After controlling the heating belt to heat the current heating time, and controlling the start of the compressor according to the preset compressor start requirement, the method further includes: Obtaining the current state of the compressor; The state of the heating belt is controlled to be opposite to the current state of the compressor.

5. The control method of the chiller according to claim 1, characterized in that: The lower limit of the ambient temperature range is negatively correlated with the heating time of the heating belt, and the power-off time of the unit is positively correlated with the heating time of the heating belt.

6. The control method of a chiller according to claim 1, characterized in that: Also includes: When it is detected that the current ambient temperature value is greater than or equal to the preset value, the heating belt is controlled to be in an off state and the compressor is controlled to start according to the preset compressor start requirement.

7. The control method of the chiller according to claim 6, characterized in that: After the heating belt is controlled to be in an off state and the compressor is started according to the preset compressor start requirement when the current ambient temperature value is detected to be greater than or equal to the preset value, or after the heating belt is controlled to heat the current heating time and the compressor is started according to the preset compressor start requirement, the method further includes: Return to the step of obtaining the current ambient temperature value and the preset compressor start requirement.

8. A control device for a chiller, characterized in that: include: A first acquisition module is used to obtain the current ambient temperature value and the preset compressor start requirement; A second acquisition module is used to acquire the current power-off duration of the unit and the current environmental interval range to which the current environmental temperature value belongs when it is detected that the current environmental temperature value is less than a preset value; A determination module, used to determine the current heating time of the heating belt corresponding to the current environmental interval range and the current power-off duration according to the relationship between the pre-established environmental temperature interval range, the unit power-off duration and the heating time of the heating belt; The control module is used to control the heating belt to heat the current heating time and then control the start-up of the compressor according to the preset compressor start-up requirement.

9. A control device for a chiller, characterized in that: include: Memory for storing computer programs; A processor is used to implement the steps of the chiller control method according to any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for controlling a chiller according to any one of claims 1 to 7 are implemented.

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