Oil return operation control method and device of temperature control equipment

Abstract

The invention relates to the technical field of equipment control, and discloses an oil return operation control method and device for temperature control equipment, and the method comprises the steps: determining a current operation mode of the temperature control equipment and compressor operation parameters of a compressor corresponding to the temperature control equipment, and acquiring mode operation parameters of the temperature control equipment in the current operation mode, generating oil return operation control parameters for the temperature control equipment according to the mode operation parameters and the compressor operation parameters, and controlling the temperature control equipment to execute oil return operation according to the oil return operation control parameters. It can be seen that the accuracy of oil return control over the temperature control equipment can be improved, the system operation efficiency of the temperature control equipment is optimized, the operation stability and reliability of the compressor of the temperature control equipment are improved, system faults are reduced, and then the overall operation stability of the temperature control equipment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment control, and in particular to an oil return operation control method and device for temperature control equipment. Background Art

[0002] With the advancement of science and technology and the continuous improvement of people's living standards, temperature control equipment (such as air conditioners) has become more and more popular due to its ability to adjust the ambient temperature. However, during the operation of the temperature control equipment, the compressor lubricating oil will be discharged from the compressor along with the compressor exhaust airflow. When the compressor is in a low-frequency operation state for a long time, the refrigerant flow rate in the refrigerant pipeline is low, and the lubricating oil discharged from the compressor cannot be effectively brought back to the compressor. If the compressor operates in this state for too long, it may affect the operating reliability of the compressor, and in severe cases, it will cause the compressor to burn out.

[0003] At present, the oil return control scheme for compressors in the prior art mostly adopts the method of limiting the low-frequency operation time of the compressor, but the accuracy of oil return control of the temperature control device and the operating stability of the temperature control device using this method are low. Therefore, it is particularly important to propose a technical solution that can improve the accuracy of oil return control and the operating stability of the temperature control device. Summary of the invention The present invention provides an oil return operation control method and device for a temperature control device, which can be beneficial to improving the accuracy of oil return control and the operating stability of the temperature control device.

[0004] In order to solve the above technical problems, the first aspect of the present invention discloses an oil return operation control method for a temperature control device, the method comprising: determining a current operating mode of a temperature control device and compressor operating parameters of a compressor corresponding to the temperature control device; Obtaining mode operation parameters of the temperature control device in the current operation mode; An oil return operation control parameter for the temperature control device is generated according to the mode operation parameter and the compressor operation parameter, and the temperature control device is controlled to perform an oil return operation according to the oil return operation control parameter.

[0005] As an optional implementation, in the first aspect of the present invention, the compressor operation parameter includes a compressor operation frequency parameter and a compressor operation duration parameter; The step of generating the oil return operation control parameter for the temperature control device according to the mode operation parameter and the compressor operation parameter comprises: Acquire a compressor operation parameter threshold corresponding to the compressor, wherein the compressor operation parameter threshold includes a compressor operation frequency parameter threshold and a compressor operation duration parameter threshold; Determine whether the compressor operating frequency parameter is less than the compressor operating frequency parameter threshold, and whether the compressor operating duration parameter is greater than the compressor operating duration parameter threshold; When the compressor operating frequency parameter is less than the compressor operating frequency parameter threshold and the compressor operating duration parameter is greater than the compressor operating duration parameter threshold, judging whether the temperature control device meets the preset oil return operation condition according to the mode operation parameter; When the temperature control device satisfies the oil return operation condition, an oil return operation control parameter for the temperature control device is generated according to the mode operation parameter.

[0006] As an optional implementation, in the first aspect of the present invention, the current operation mode includes a cooling mode or a heating mode; The obtaining of the mode operation parameters of the temperature control device in the current operation mode includes: When the current operation mode of the temperature control device includes the cooling mode, acquiring a condenser temperature parameter and a compressor temperature parameter of the temperature control device in the cooling mode, wherein the mode operation parameters in the cooling mode include the condenser temperature parameter and the compressor temperature parameter; When the current operation mode of the temperature control device includes the heating mode, the defrosting operation parameters of the temperature control device in the heating mode are acquired, and the mode operation parameters in the heating mode include the defrosting operation parameters.

[0007] As an optional embodiment, in the first aspect of the present invention, the condenser temperature parameter includes a condenser operating temperature parameter and a condenser frequency limiting temperature parameter, and the compressor temperature parameter includes a compressor driving temperature parameter and a compressor frequency limiting temperature parameter; When the compressor operating frequency parameter is less than the compressor operating frequency parameter threshold and the compressor operating duration parameter is greater than the compressor operating duration parameter threshold, judging whether the temperature control device meets the preset oil return operation condition according to the mode operating parameter includes: When the current operation mode of the temperature control device includes the cooling mode, a condenser temperature threshold corresponding to the temperature control device is calculated according to the condenser frequency limiting temperature parameter, and a compressor temperature threshold corresponding to the temperature control device is calculated according to the compressor frequency limiting temperature parameter; Determining whether the condenser operating temperature parameter is less than the condenser temperature threshold, and whether the compressor driving temperature parameter is less than the compressor temperature threshold; When the condenser operating temperature parameter is less than the condenser temperature threshold, and the compressor driving temperature parameter is less than the compressor temperature threshold, determining that the temperature control device meets the oil return operation condition; When the current operating mode of the temperature control device includes the heating mode, it is determined whether the temperature control device is in the defrost operation mode based on the defrost operation parameters. When the temperature control device is not in the defrost operation mode, it is determined that the temperature control device meets the oil return operation condition.

[0008] As an optional embodiment, in the first aspect of the present invention, when the temperature control device meets the oil return operation condition, generating the oil return operation control parameter for the temperature control device according to the mode operation parameter includes: When the current operation mode of the temperature control device includes the refrigeration mode, generating a refrigeration mode oil return control parameter for the temperature control device according to the mode operation parameter corresponding to the refrigeration mode, the refrigeration mode oil return control parameter including a first electronic expansion valve control parameter, a first compressor control parameter and a first signal response parameter; When the current operating mode of the temperature control device includes the heating mode, the heating mode return oil control parameters for the temperature control device are generated according to the mode operating parameters corresponding to the heating mode, and the heating mode return oil control parameters include the terminal device parameters corresponding to the temperature regulating device, the second electronic expansion valve control parameters, the second compressor control parameters and the second signal response parameters.

[0009] As an optional embodiment, in the first aspect of the present invention, controlling the temperature control device to perform the oil return operation according to the oil return operation control parameter includes: When the current operation mode of the temperature control device includes the cooling mode, according to the first electronic expansion valve control parameter, the electronic expansion valve of the temperature control device is controlled to be adjusted from the standard opening to the first opening in advance for a first preset time period; Controlling the compressor operating frequency parameter of the compressor to increase the frequency to a first preset frequency according to the first compressor control parameter, and controlling the temperature control device not to respond to a received shutdown signal during the oil return operation according to the first signal response parameter, wherein the shutdown signal includes a normal shutdown signal of the whole machine or a shutdown signal due to reaching the temperature; When the current operation mode of the temperature control device includes the heating mode, the number of the open terminal devices corresponding to the temperature adjustment device is determined according to the terminal device parameters, and it is judged whether the number of devices reaches a preset open number, and the terminal device mode of the open terminal device is in the open mode; When the number of devices does not reach the preset number of devices to be turned on, adjusting the device mode of the closed terminal device corresponding to the temperature adjustment device from the closed mode to the open mode; According to the second electronic expansion valve control parameter, controlling the electronic expansion valve of the temperature control device to adjust from a standard opening to a second opening in advance for a second preset time period; The compressor operating frequency parameter of the compressor is controlled to be increased to a second preset frequency according to the second compressor control parameter, and the temperature control device is controlled not to respond to a received shutdown signal during the oil return operation according to the second signal response parameter.

[0010] As an optional embodiment, in the first aspect of the present invention, the method further comprises: In the process of controlling the temperature control device to perform the oil return operation according to the oil return operation control parameter, monitoring the device target parameters of the temperature control device, the device target parameters including the exhaust temperature parameter, the defrost coil temperature parameter and / or the oil return duration parameter; Determining whether the exhaust temperature parameter is greater than a preset exhaust temperature threshold, and when the exhaust temperature parameter is greater than the exhaust temperature threshold, determining that the temperature control device has completed the oil return operation; and / or, Determining whether the defrost coil temperature parameter is less than a preset defrost coil temperature threshold, and when the defrost coil temperature parameter is less than the defrost coil temperature threshold, determining that the temperature control device has completed the oil return operation; and / or, Determining whether the oil return duration parameter satisfies a preset oil return duration condition, and when the oil return duration parameter satisfies the oil return duration condition, determining that the temperature control device has completed the oil return operation; And, the method further comprises: After determining that the temperature control device has completed the oil return operation, controlling the electronic expansion valve of the temperature control device to adjust from the first opening to the standard opening after a preset delay time; The device mode of the shutdown terminal device is adjusted from the on mode to the off mode.

[0011] A second aspect of the present invention discloses an oil return operation control device for a temperature control device, the device comprising: a determination module, configured to determine a current operation mode of a temperature control device and a compressor operation parameter of a compressor corresponding to the temperature control device; An acquisition module, used for acquiring a mode operation parameter of the temperature control device in the current operation mode; A generating module is used to generate an oil return operation control parameter for the temperature control device according to the mode operation parameter and the compressor operation parameter, and control the temperature control device to perform an oil return operation according to the oil return operation control parameter.

[0012] As an optional implementation, in the second aspect of the present invention, the compressor operating parameters include compressor operating frequency parameters and compressor operating duration parameters; The method in which the generating module generates the oil return operation control parameter for the temperature control device according to the mode operation parameter and the compressor operation parameter specifically includes: Acquire a compressor operation parameter threshold corresponding to the compressor, wherein the compressor operation parameter threshold includes a compressor operation frequency parameter threshold and a compressor operation duration parameter threshold; Determine whether the compressor operating frequency parameter is less than the compressor operating frequency parameter threshold, and whether the compressor operating duration parameter is greater than the compressor operating duration parameter threshold; When the compressor operating frequency parameter is less than the compressor operating frequency parameter threshold and the compressor operating duration parameter is greater than the compressor operating duration parameter threshold, judging whether the temperature control device meets the preset oil return operation condition according to the mode operation parameter; When the temperature control device satisfies the oil return operation condition, an oil return operation control parameter for the temperature control device is generated according to the mode operation parameter.

[0013] As an optional implementation, in the second aspect of the present invention, the current operation mode includes a cooling mode or a heating mode; The manner in which the acquisition module acquires the mode operation parameters of the temperature control device in the current operation mode specifically includes: When the current operation mode of the temperature control device includes the cooling mode, acquiring a condenser temperature parameter and a compressor temperature parameter of the temperature control device in the cooling mode, wherein the mode operation parameters in the cooling mode include the condenser temperature parameter and the compressor temperature parameter; When the current operation mode of the temperature control device includes the heating mode, the defrosting operation parameters of the temperature control device in the heating mode are acquired, and the mode operation parameters in the heating mode include the defrosting operation parameters.

[0014] As an optional embodiment, in the second aspect of the present invention, the condenser temperature parameter includes a condenser operating temperature parameter and a condenser frequency limiting temperature parameter, and the compressor temperature parameter includes a compressor driving temperature parameter and a compressor frequency limiting temperature parameter; When the compressor operating frequency parameter is less than the compressor operating frequency parameter threshold and the compressor operating duration parameter is greater than the compressor operating duration parameter threshold, the generation module determines whether the temperature control device meets the preset oil return operation condition according to the mode operating parameter in a manner specifically including: When the current operation mode of the temperature control device includes the cooling mode, a condenser temperature threshold corresponding to the temperature control device is calculated according to the condenser frequency limiting temperature parameter, and a compressor temperature threshold corresponding to the temperature control device is calculated according to the compressor frequency limiting temperature parameter; Determining whether the condenser operating temperature parameter is less than the condenser temperature threshold, and whether the compressor driving temperature parameter is less than the compressor temperature threshold; When the condenser operating temperature parameter is less than the condenser temperature threshold, and the compressor driving temperature parameter is less than the compressor temperature threshold, determining that the temperature control device meets the oil return operation condition; When the current operating mode of the temperature control device includes the heating mode, it is determined whether the temperature control device is in the defrost operation mode based on the defrost operation parameters. When the temperature control device is not in the defrost operation mode, it is determined that the temperature control device meets the oil return operation condition.

[0015] As an optional implementation, in the second aspect of the present invention, when the temperature control device meets the oil return operation condition, the generation module generates the oil return operation control parameter for the temperature control device according to the mode operation parameter, specifically including: When the current operation mode of the temperature control device includes the refrigeration mode, generating a refrigeration mode oil return control parameter for the temperature control device according to the mode operation parameter corresponding to the refrigeration mode, the refrigeration mode oil return control parameter including a first electronic expansion valve control parameter, a first compressor control parameter and a first signal response parameter; When the current operating mode of the temperature control device includes the heating mode, the heating mode return oil control parameters for the temperature control device are generated according to the mode operating parameters corresponding to the heating mode, and the heating mode return oil control parameters include the terminal device parameters corresponding to the temperature regulating device, the second electronic expansion valve control parameters, the second compressor control parameters and the second signal response parameters.

[0016] As an optional implementation, in the second aspect of the present invention, the generation module controls the temperature control device to perform the oil return operation according to the oil return operation control parameter, specifically including: When the current operation mode of the temperature control device includes the cooling mode, according to the first electronic expansion valve control parameter, the electronic expansion valve of the temperature control device is controlled to be adjusted from the standard opening to the first opening in advance for a first preset time period; Controlling the compressor operating frequency parameter of the compressor to increase the frequency to a first preset frequency according to the first compressor control parameter, and controlling the temperature control device not to respond to a received shutdown signal during the oil return operation according to the first signal response parameter, wherein the shutdown signal includes a normal shutdown signal of the whole machine or a shutdown signal due to reaching the temperature; When the current operation mode of the temperature control device includes the heating mode, the number of the terminal devices corresponding to the temperature adjustment device is determined according to the terminal device parameters, and it is judged whether the number of devices reaches a preset number of openings, and the terminal device mode of the terminal device opening is in the opening mode; When the number of devices does not reach the preset number of devices to be turned on, adjusting the device mode of the closed terminal device corresponding to the temperature adjustment device from the closed mode to the open mode; According to the second electronic expansion valve control parameter, controlling the electronic expansion valve of the temperature control device to adjust from a standard opening to a second opening in advance for a second preset time period; The compressor operating frequency parameter of the compressor is controlled to be increased to a second preset frequency according to the second compressor control parameter, and the temperature control device is controlled not to respond to a received shutdown signal during the oil return operation according to the second signal response parameter.

[0017] As an optional implementation, in the second aspect of the present invention, the device further includes: A detection module, configured to monitor a device target parameter of the temperature control device during a process in which the generation module controls the temperature control device to perform an oil return operation according to the oil return operation control parameter, wherein the device target parameter includes an exhaust temperature parameter, a defrost coil temperature parameter and / or an oil return duration parameter; a judgment module, used to judge whether the exhaust temperature parameter is greater than a preset exhaust temperature threshold, and when the exhaust temperature parameter is greater than the exhaust temperature threshold, determine that the temperature control device has completed the oil return operation; and / or, The judgment module is further used to judge whether the defrost coil temperature parameter is less than a preset defrost coil temperature threshold, and when the defrost coil temperature parameter is less than the defrost coil temperature threshold, it is determined that the temperature control device has completed the oil return operation; and / or, The judging module is further used to judge whether the oil return duration parameter satisfies a preset oil return duration condition, and when the oil return duration parameter satisfies the oil return duration condition, it is determined that the temperature control device has completed the oil return operation; And, the device further comprises: A control module, configured to control the electronic expansion valve of the temperature control device to adjust from the first opening to the standard opening after a preset delay time after the judgment module determines that the temperature control device has completed the oil return operation; An adjustment module is used to adjust the device mode of the closed terminal device from the open mode to the closed mode.

[0018] A third aspect of the present invention discloses another oil return operation control device of a temperature control device, the device comprising: A memory storing executable program code; a processor coupled to the memory; The processor calls the executable program code stored in the memory to execute the oil return operation control method of the temperature control device disclosed in the first aspect of the present invention.

[0019] The fourth aspect of the present invention discloses a computer storage medium, wherein the computer storage medium stores computer instructions, and when the computer instructions are called, they are used to execute the oil return operation control method of the temperature control device disclosed in the first aspect of the present invention.

[0020] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: In the embodiment of the present invention, the current operation mode of the temperature control device and the compressor operation parameters of the compressor corresponding to the temperature control device are determined, the mode operation parameters of the temperature control device in the current operation mode are obtained, and the oil return operation control parameters for the temperature control device are generated according to the mode operation parameters and the compressor operation parameters, and the temperature control device is controlled to perform the oil return operation according to the oil return operation control parameters. It can be seen that the implementation of the present invention can improve the accuracy of the oil return control of the temperature control device, optimize the system operation efficiency of the temperature control device, improve the operation stability and reliability of the compressor of the temperature control device, reduce system failures, and thus improve the overall operation stability of the temperature control device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of 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 creative work.

[0022] Figure 1 It is a flow chart of an oil return operation control method of a temperature control device disclosed in an embodiment of the present invention; Figure 2 It is a flow chart of another oil return operation control method of a temperature control device disclosed in an embodiment of the present invention; Figure 3 It is a structural schematic diagram of an oil return operation control device of a temperature control device disclosed in an embodiment of the present invention; Figure 4 It is a structural schematic diagram of an oil return operation control device of another temperature control device disclosed in an embodiment of the present invention; Figure 5 It is a structural schematic diagram of an oil return operation control device of another temperature control device disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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.

[0024] The terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, device, product or end including a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units inherent to these processes, methods, products or ends.

[0025] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] The present invention discloses a method and device for controlling the oil return operation of a temperature control device, which can improve the accuracy of the oil return control of the temperature control device, optimize the system operation efficiency of the temperature control device, improve the operation stability and reliability of the compressor of the temperature control device, reduce system failures, and thus improve the overall operation stability of the temperature control device. The following are detailed descriptions.

[0027] Embodiment 1 See also Figure 1 , Figure 1 1 is a flow chart of an oil return operation control method for a temperature control device disclosed in an embodiment of the present invention. Figure 1 The oil return operation control method of the temperature control device described can be applied to the temperature control device, wherein the temperature control device can have a heating function and / or a cooling function, and the temperature control device can include an air conditioning device, which is not limited in the embodiment of the present invention. Figure 1 As shown, the oil return operation control method of the temperature control device may include the following operations: 101. Determine a current operating mode of a temperature control device and compressor operating parameters of a compressor corresponding to the temperature control device.

[0028] In an embodiment of the present invention, optionally, the current operating mode of the temperature control device may include a cooling mode or a heating mode, and the compressor operating parameters of the compressor corresponding to the temperature control device may include a compressor operating frequency parameter and a compressor operating duration parameter, which is not limited by the present invention.

[0029] 102. Obtain mode operation parameters of the temperature control device in the current operation mode.

[0030] 103. Generate an oil return operation control parameter for the temperature control device according to the mode operation parameter and the compressor operation parameter, and control the temperature control device to perform an oil return operation according to the oil return operation control parameter.

[0031] In an embodiment of the present invention, optionally, it is possible to determine whether the temperature control device meets the preset oil return operation conditions based on the mode operation parameters and the compressor operation parameters. When the temperature control device meets the preset oil return operation conditions, oil return operation control parameters for the temperature control device are generated, which is not limited by the present invention.

[0032] It can be seen that implementation Figure 1 The described oil return operation control method for the temperature control device can determine the current operating mode of the temperature control device and the compressor operating parameters of the compressor corresponding to the temperature control device, obtain the mode operating parameters of the temperature control device under the current operating mode, generate oil return operation control parameters for the temperature control device according to the mode operating parameters and the compressor operating parameters, and control the temperature control device to perform the oil return operation according to the oil return operation control parameters, which can improve the accuracy of the oil return control of the temperature control device, optimize the system operating efficiency of the temperature control device, improve the operating stability and reliability of the compressor of the temperature control device, reduce system failures, and thereby improve the overall operating stability of the temperature control device.

[0033] Embodiment 2 See also Figure 2 , Figure 2 1 is a flow chart of an oil return operation control method for a temperature control device disclosed in an embodiment of the present invention. Figure 2 The oil return operation control method of the temperature control device described can be applied to the temperature control device, wherein the temperature control device can have a heating function and / or a cooling function, and the temperature control device can include an air conditioning device, which is not limited in the embodiment of the present invention. Figure 2 As shown, the oil return operation control method of the temperature control device may include the following operations: 201. Determine a current operating mode of a temperature control device and compressor operating parameters of a compressor corresponding to the temperature control device.

[0034] 202. Obtaining mode operation parameters of the temperature control device in the current operation mode.

[0035] 203. Obtain a compressor operation parameter threshold corresponding to the compressor, where the compressor operation parameter threshold includes a compressor operation frequency parameter threshold and a compressor operation duration parameter threshold.

[0036] In an embodiment of the present invention, optionally, the compressor operating parameters of the compressor corresponding to the temperature control device may include a compressor operating frequency parameter and a compressor operating duration parameter, and the compressor operating parameter threshold may include a compressor operating frequency parameter threshold corresponding to the compressor operating frequency parameter and a compressor operating duration parameter threshold corresponding to the compressor operating duration parameter, which is not limited by the present invention.

[0037] 204. Determine whether the compressor operating frequency parameter is less than the compressor operating frequency parameter threshold, and whether the compressor operating duration parameter is greater than the compressor operating duration parameter threshold.

[0038] In an embodiment of the present invention, optionally, the compressor operating parameter threshold may be set by a user, or may be determined based on the compressor performance of the temperature control device. For example, the compressor operating frequency parameter threshold may be 50 Hz, and the compressor operating duration parameter threshold may be 3 hours, that is, to determine whether the compressor operating frequency parameter is less than 50 Hz, and whether the compressor operating duration parameter is greater than 3 hours.

[0039] 205. When the compressor operating frequency parameter is less than the compressor operating frequency parameter threshold and the compressor operating duration parameter is greater than the compressor operating duration parameter threshold, determine whether the temperature control device meets the preset oil return operation condition according to the mode operating parameter.

[0040] In an embodiment of the present invention, optionally, when the compressor operating frequency parameter is less than 50 Hz and the compressor operating time parameter is greater than 3 h, it is possible to judge whether the temperature control device meets the preset oil return operating conditions based on the mode operating parameters, that is, to judge whether the temperature control device meets the preset oil return operating conditions based on the heating mode or cooling mode in which the temperature control device is located.

[0041] In an embodiment of the present invention, optionally, during the timing period, if the compressor operating frequency parameter is greater than or equal to a preset stable operating frequency and lasts for a certain period of time, the timer is reset. For example, when the compressor operating frequency parameter is greater than or equal to 65 Hz and lasts for more than 10 minutes, the timer is reset. During the process of mode conversion, manual shutdown or protective shutdown of the temperature control device, the timing is not reset. After the compressor is restarted, the timing continues. The present invention does not limit this.

[0042] 206. When the temperature control device meets the oil return operation condition, generate the oil return operation control parameters for the temperature control device according to the mode operation parameters.

[0043] 207. Control the temperature control device to perform the oil return operation according to the oil return operation control parameter.

[0044] In the embodiment of the present invention, for other descriptions of step 201, step 202 and step 207, please refer to the detailed description of step 101 to step 103 in the first embodiment, and the embodiment of the present invention will not be repeated.

[0045] It can be seen that the implementation Figure 2The oil return operation control method of the temperature control device described can determine the current operation mode of the temperature control device and the compressor operation parameters of the compressor corresponding to the temperature control device, obtain the mode operation parameters of the temperature control device in the current operation mode, obtain the compressor operation parameter threshold corresponding to the compressor, the compressor operation parameter threshold includes the compressor operation frequency parameter threshold and the compressor operation duration parameter threshold, judge whether the compressor operation frequency parameter is less than the compressor operation frequency parameter threshold, and whether the compressor operation duration parameter is greater than the compressor operation duration parameter threshold, when the compressor operation frequency parameter is less than the compressor operation frequency parameter threshold and the compressor operation duration parameter is greater than the compressor operation duration parameter threshold, By judging whether the temperature control device meets the preset oil return operation conditions according to the mode operation parameters, and judging whether the temperature control device meets the preset oil return operation conditions according to the compressor operation parameters and the mode operation parameters, the accuracy of the oil return operation operation of the temperature control device is improved, and the oil return operation control parameters for the temperature control device are generated according to the mode operation parameters, and the temperature control device is controlled to perform the oil return operation according to the oil return operation control parameters, the accuracy and efficiency of the oil return control of the temperature control device can be improved, the system operation efficiency of the temperature control device can be optimized, the operation stability and reliability of the compressor of the temperature control device can be improved, and system failures can be reduced, thereby improving the overall operation stability of the temperature control device.

[0046] In an optional embodiment, the current operation mode includes a cooling mode or a heating mode; Obtaining the mode operation parameters of the temperature control device in the current operation mode may include the following operations: When the current operation mode of the temperature control device includes a cooling mode, obtaining a condenser temperature parameter and a compressor temperature parameter of the temperature control device in the cooling mode, wherein the mode operation parameters in the cooling mode include a condenser temperature parameter and a compressor temperature parameter; When the current operation mode of the temperature control device includes a heating mode, a defrosting operation parameter of the temperature control device in the heating mode is acquired, and the mode operation parameter in the heating mode includes a defrosting operation parameter.

[0047] In an embodiment of the present invention, optionally, when the temperature control device is in a cooling mode, the condenser temperature parameters and the compressor temperature parameters of the temperature control device in the cooling mode can be obtained, and the mode operation parameters in the cooling mode may include the condenser temperature parameters and the compressor temperature parameters, and the condenser temperature parameters may include the condenser operating temperature parameters and the condenser frequency limiting temperature parameters, and the compressor temperature parameters may include the compressor drive temperature parameters and the compressor frequency limiting temperature parameters. That is, when the temperature control device is in the cooling mode, it can be judged whether the temperature control device meets the preset oil return operation conditions based on the condenser temperature parameters and the compressor temperature parameters of the temperature control device, which is not limited in this embodiment.

[0048] In an embodiment of the present invention, optionally, when the temperature control device is in a heating mode, the defrost operation parameters of the temperature control device in the heating mode can be taken, that is, whether the temperature control device meets the preset oil return operation conditions can be judged according to the defrost operation parameters, which is not limited in this embodiment.

[0049] It can be seen that the implementation of this optional embodiment can obtain the condenser temperature parameters and compressor temperature parameters of the temperature control device in the cooling mode when the current operating mode of the temperature control device includes the cooling mode, and obtain the defrost operation parameters of the temperature control device in the heating mode when the current operating mode of the temperature control device includes the heating mode. The corresponding mode operating parameters can be determined under different operating modes, thereby improving the determination of whether the temperature control device meets the preset oil return operation conditions, thereby improving the accuracy of the oil return operation operation of the temperature control device.

[0050] In another optional embodiment, the condenser temperature parameter includes a condenser operating temperature parameter and a condenser frequency limiting temperature parameter, and the compressor temperature parameter includes a compressor driving temperature parameter and a compressor frequency limiting temperature parameter; When the compressor operating frequency parameter is less than the compressor operating frequency parameter threshold and the compressor operating time parameter is greater than the compressor operating time parameter threshold, judging whether the temperature control device meets the preset oil return operation condition according to the mode operating parameter may include the following operations: When the current operation mode of the temperature control device includes a cooling mode, a condenser temperature threshold corresponding to the temperature control device is calculated according to the condenser frequency limit temperature parameter, and a compressor temperature threshold corresponding to the temperature control device is calculated according to the compressor frequency limit temperature parameter; Determine whether the condenser operating temperature parameter is less than the condenser temperature threshold, and whether the compressor driving temperature parameter is less than the compressor temperature threshold; When the condenser operating temperature parameter is less than the condenser temperature threshold, and the compressor driving temperature parameter is less than the compressor temperature threshold, determining that the temperature control device meets the oil return operation condition; When the current operation mode of the temperature control device includes the heating mode, it is determined whether the temperature control device is in the defrost operation mode according to the defrost operation parameters. When the temperature control device is not in the defrost operation mode, it is determined that the temperature control device meets the oil return operation condition.

[0051] In an embodiment of the present invention, optionally, when the compressor operating frequency parameter is less than the compressor operating frequency parameter threshold and the compressor operating duration parameter is greater than the compressor operating duration parameter threshold, and when the current operating mode of the temperature control device includes a cooling mode, the condenser temperature threshold corresponding to the temperature control device can be calculated according to the condenser frequency limiting temperature parameter, and the compressor temperature threshold corresponding to the temperature control device can be calculated according to the compressor frequency limiting temperature parameter. Specifically, the temperature redundancy value corresponding to the temperature control device can be determined, and the condenser temperature threshold and the compressor temperature threshold can be calculated according to the temperature redundancy value. For example, when the temperature redundancy value is 2 degrees Celsius, the condenser temperature threshold = condenser frequency limiting temperature parameter - 2°C, the compressor temperature threshold = compressor frequency limiting temperature parameter - 2°C, when the condenser operating temperature parameter is less than the condenser temperature threshold, and the compressor drive temperature parameter is less than the compressor temperature threshold, it is determined that the temperature control device meets the oil return operation conditions, which is not limited in this embodiment.

[0052] In an embodiment of the present invention, optionally, when the current operating mode of the temperature control device includes a heating mode, it is determined whether the temperature control device is in a defrost operation mode based on the defrost operation parameters; when the temperature control device is not in the defrost operation mode, it is determined that the temperature control device meets the oil return operation conditions; when the temperature control device is in the defrost operation mode, the oil return cumulative timer is reset, which is not limited in this embodiment.

[0053] It can be seen that the implementation of this optional embodiment can determine whether the condenser operating temperature parameter is less than the condenser temperature threshold and whether the compressor drive temperature parameter is less than the compressor temperature threshold when the current operating mode of the temperature control device includes the cooling mode. When the condenser operating temperature parameter is less than the condenser temperature threshold and the compressor drive temperature parameter is less than the compressor temperature threshold, it is determined that the temperature control device meets the oil return operation condition. When the current operating mode of the temperature control device includes the heating mode, it is determined whether the temperature control device is in the defrost operation mode according to the defrost operation parameter. When the temperature control device is not in the defrost operation mode, it is determined that the temperature control device meets the oil return operation condition. It can determine whether the temperature control device meets the preset oil return operation condition according to the corresponding parameters under different operating modes of the temperature control device, thereby improving the judgment accuracy and reliability, thereby improving the accuracy of the oil return operation operation of the temperature control device, and improving the overall operating stability of the temperature control device.

[0054] In yet another optional embodiment, when the temperature control device meets the oil return operation condition, generating the oil return operation control parameter for the temperature control device according to the mode operation parameter may include the following operations: When the current operation mode of the temperature control device includes a refrigeration mode, generating a refrigeration mode oil return control parameter for the temperature control device according to the mode operation parameter corresponding to the refrigeration mode, the refrigeration mode oil return control parameter including a first electronic expansion valve control parameter, a first compressor control parameter and a first signal response parameter; When the current operating mode of the temperature control device includes a heating mode, heating mode oil return control parameters for the temperature control device are generated according to the mode operating parameters corresponding to the heating mode. The heating mode oil return control parameters include terminal device parameters corresponding to the temperature regulating device, second electronic expansion valve control parameters, second compressor control parameters and second signal response parameters.

[0055] In an embodiment of the present invention, optionally, when the current operating mode of the temperature control device includes a refrigeration mode, a first electronic expansion valve control parameter, a first compressor control parameter and a first signal response parameter are generated for the temperature control device according to the mode operating parameters corresponding to the refrigeration mode, wherein the first electronic expansion valve control parameter is used to control the opening and closing degree of the electronic expansion valve of the temperature control device during the oil return operation of the refrigeration mode, the first compressor control parameter is used to control the compressor operating frequency of the temperature control device during the oil return operation of the refrigeration mode, and the first signal response parameter is used to control the signal response strategy of the temperature control device during the oil return operation of the refrigeration mode, which is not limited in this embodiment.

[0056] In an embodiment of the present invention, optionally, when the current operating mode of the temperature control device includes a heating mode, terminal device parameters, second electronic expansion valve control parameters, second compressor control parameters and second signal response parameters are generated for the temperature control device according to the mode operating parameters corresponding to the heating mode, wherein the terminal device parameters are used to determine the operating condition of the terminal device of the temperature control device during the oil return operation of the heating mode, the second electronic expansion valve control parameters are used to control the opening and closing degree of the electronic expansion valve of the device during the oil return operation of the heating mode, the second compressor control parameters are used to control the compressor operating frequency of the temperature control device during the oil return operation of the heating mode, and the second signal response parameters are used to control the signal response strategy of the temperature control device during the oil return operation of the heating mode, which is not limited in this embodiment.

[0057] It can be seen that the implementation of this optional embodiment can generate the first electronic expansion valve control parameter, the first compressor control parameter and the first signal response parameter for the temperature control device according to the mode operating parameters corresponding to the cooling mode when the current operating mode of the temperature control device includes the cooling mode; and when the current operating mode of the temperature control device includes the heating mode, generate the terminal device parameters corresponding to the temperature regulating device of the temperature control device, the second electronic expansion valve control parameter, the second compressor control parameter and the second signal response parameter according to the mode operating parameters corresponding to the heating mode, so that the corresponding oil return operation control parameters can be generated under different operating modes of the temperature control device, thereby improving the accuracy and reliability of the oil return operation control of the temperature control device under different operating modes.

[0058] In yet another optional embodiment, controlling the temperature control device to perform the oil return operation according to the oil return operation control parameter may include the following operations: When the current operation mode of the temperature control device includes a cooling mode, according to the first electronic expansion valve control parameter, controlling the electronic expansion valve of the temperature control device to adjust from a standard opening to a first opening in advance for a first preset time; Controlling the compressor operating frequency parameter of the compressor to increase the frequency to a first preset frequency according to the first compressor control parameter, and controlling the temperature control device not to respond to a received shutdown signal during the oil return operation according to the first signal response parameter, wherein the shutdown signal includes a normal shutdown signal of the whole machine or a shutdown signal due to reaching the temperature; When the current operation mode of the temperature control device includes a heating mode, the number of devices of the open terminal device corresponding to the temperature adjustment device is determined according to the terminal device parameters, and it is determined whether the number of devices reaches a preset open number, and the terminal device mode of the open terminal device is in the open mode; When the number of devices does not reach the preset number of devices to be turned on, the device mode of the closed terminal device corresponding to the temperature adjustment device is adjusted from the closed mode to the open mode; According to the second electronic expansion valve control parameter, the electronic expansion valve of the temperature control device is controlled to adjust from the standard opening to the second opening in advance for a second preset time period; The compressor operating frequency parameter of the compressor is controlled to be increased to a second preset frequency according to the second compressor control parameter, and the temperature control device is controlled not to respond to the received shutdown signal during the oil return operation according to the second signal response parameter.

[0059] In an embodiment of the present invention, optionally, when the current operating mode of the temperature control device includes a cooling mode, the electronic expansion valve of the temperature control device is controlled to be adjusted from a standard opening to a first opening for a first preset time in advance according to a first electronic expansion valve control parameter. For example, at the start of the oil return operation, the electronic expansion valve is controlled to be adjusted from the standard opening to 350pls in advance by 5S, wherein the first opening may be set by the user or determined based on factors such as the device performance of the temperature control device, which is not limited in this embodiment.

[0060] In an embodiment of the present invention, optionally, the compressor operating frequency parameter of the compressor can be controlled to be increased to a first preset frequency according to the first compressor control parameter, for example, the compressor operating frequency parameter of the compressor is controlled to be increased to 65rps, wherein the first preset frequency can be set by the user or determined according to factors such as the equipment performance of the temperature control device; the temperature control device can be controlled not to respond to a received shutdown signal during the oil return operation according to the first signal response parameter, and the shutdown signal can include a normal shutdown signal of the whole machine or a temperature shutdown signal. For example, if a normal shutdown signal of the whole machine or a temperature shutdown signal (meeting the temperature shutdown condition) is received during the oil return operation, no response is given to the signal, and the normal shutdown processing is performed after the oil return operation is completed. This is not limited in this embodiment.

[0061] In an embodiment of the present invention, optionally, when the current operating mode of the temperature control device includes a cooling mode, there is no order of control between controlling the electronic expansion valve according to the first electronic expansion valve control parameter, controlling the compressor according to the first compressor control parameter, and controlling the temperature control device according to the first signal response parameter. Any one or two of them may be executed first, or all three may be executed simultaneously, and this embodiment does not limit this.

[0062] In an embodiment of the present invention, optionally, when the current operating mode of the temperature control device includes a heating mode, it can be determined whether the number of devices of the turned-on terminal devices reaches a preset turned-on number, for example, it can be determined whether the number of devices of the turned-on terminal devices reaches 70% of the total number of terminal devices. When the number of devices does not reach the preset turned-on number, the device mode of the turned-off terminal device corresponding to the temperature adjustment device is adjusted from the turned-off mode to the turned-on mode, that is, the terminal device whose terminal device mode is the turned-off mode is forced to be turned on, which is not limited in this embodiment.

[0063] In an embodiment of the present invention, optionally, when the current operating mode of the temperature control device includes a heating mode, the electronic expansion valve of the temperature control device can be controlled to be adjusted from a standard opening to a second opening for a second preset time in advance according to a second electronic expansion valve control parameter. For example, at the start of the oil return operation, the electronic expansion valve is controlled to be adjusted from the standard opening to 350pls in advance by 5S, wherein the second opening can be set by the user or determined based on factors such as the device performance of the temperature control device, which is not limited in this embodiment.

[0064] In an embodiment of the present invention, optionally, the compressor operating frequency parameter of the compressor can be controlled to be increased to a second preset frequency according to the second compressor control parameter, for example, the compressor operating frequency parameter of the compressor is controlled to be increased to 65rps, wherein the second preset frequency can be set by the user or determined according to factors such as the equipment performance of the temperature control device; the temperature control device can be controlled not to respond to the received shutdown signal during the oil return operation according to the second signal response parameter, and the shutdown signal can include a normal shutdown signal of the whole machine or a temperature shutdown signal. For example, if a normal shutdown signal of the whole machine or a temperature shutdown signal (meeting the temperature shutdown condition) is received during the oil return operation, no response is given to the signal, and the normal shutdown processing is performed after the oil return operation is completed. This is not limited in this embodiment.

[0065] In an embodiment of the present invention, optionally, when the current operating mode of the temperature control device includes a heating mode, there is no order of control between controlling the electronic expansion valve according to the second electronic expansion valve control parameter, controlling the compressor according to the second compressor control parameter, and controlling the temperature control device according to the second signal response parameter. Any one or two of them may be executed first, or all three may be executed simultaneously, and this embodiment does not limit this.

[0066] In an embodiment of the present invention, optionally, during the oil return operation in the heating mode, due to various protection mechanisms or abnormal shutdown, the timer of the temperature control device is not reset after restarting, but the oil return operation needs to be performed again after restarting. During the oil return operation in the heating mode and within 5 minutes after the oil return operation ends, the low pressure protection is invalid, and other protections are valid, such as the frequency reduction protection is valid, which is not limited in this embodiment.

[0067] It can be seen that the implementation of this optional embodiment can control the electronic expansion valve, compressor and signal response strategy of the temperature control device according to the oil return operation control parameters under different operating modes of the temperature control device, realize the oil return operation of the temperature control device under different operating modes, improve the accuracy and reliability of the oil return operation control of the temperature control device under different operating modes, optimize the system operating efficiency of the temperature control device, improve the operating stability and reliability of the compressor of the temperature control device, reduce system failures, and thereby improve the overall operating stability of the temperature control device.

[0068] In yet another optional embodiment, the oil return operation control method of the temperature control device may further include the following operations: In the process of controlling the temperature control device to perform the oil return operation according to the oil return operation control parameter, monitoring the device target parameters of the temperature control device, the device target parameters including the exhaust temperature parameter, the defrost coil temperature parameter and / or the oil return duration parameter; Determining whether the exhaust temperature parameter is greater than a preset exhaust temperature threshold, and when the exhaust temperature parameter is greater than the exhaust temperature threshold, determining that the temperature control device has completed the oil return operation; and / or, Determine whether the defrost coil temperature parameter is less than a preset defrost coil temperature threshold, and when the defrost coil temperature parameter is less than the defrost coil temperature threshold, determine that the temperature control device has completed the oil return operation; and / or, Determine whether the oil return duration parameter meets the preset oil return duration condition, and when the oil return duration parameter meets the oil return duration condition, determine that the temperature control device has completed the oil return operation; Furthermore, the oil return operation control method of the temperature control device may further include the following operations: After determining that the temperature control device has completed the oil return operation, the electronic expansion valve of the temperature control device is controlled to adjust from the first opening to the standard opening after a preset delay time. Adjust the device mode of the terminal device from the on mode to the off mode.

[0069] In an embodiment of the present invention, optionally, in the process of controlling the temperature control device to perform the oil return operation according to the oil return operation control parameters, the device target parameters of the temperature control device can be monitored. The device target parameters may include exhaust temperature parameters, defrost coil temperature parameters and / or oil return duration parameters. It can be determined whether the exhaust temperature parameter is greater than a preset exhaust temperature threshold, and / or whether the defrost coil temperature parameter is less than a preset defrost coil temperature threshold, and / or whether the oil return duration parameter satisfies a preset oil return duration condition. When one of the conditions is met, it is determined that the temperature control device has completed the oil return operation, that is, the temperature control device exits the oil return operation, for example, it is determined whether the exhaust temperature parameter is greater than 105 degrees Celsius, and / or whether the defrost coil temperature parameter is less than -28 degrees Celsius, and / or whether the oil return duration parameter reaches the shortest duration or the longest duration, wherein the short duration can be 4 minutes and the longest duration can be 8 minutes, which is not limited in this embodiment.

[0070] In an embodiment of the present invention, optionally, after determining that the temperature control device has completed the oil return operation, the electronic expansion valve of the temperature control device can be controlled to adjust from the first opening to the standard opening after a preset delay time. For example, after the temperature control device exits the oil return operation, the electronic expansion valve is controlled to adjust from the first opening to the standard opening after a delay of 5S. After determining that the temperature control device has completed the oil return operation, the device mode of the closed terminal device can be adjusted from the open mode to the closed mode, that is, the device mode of the terminal device that is forced to open is adjusted to the closed mode. There is no order of priority in the execution sequence of adjusting the electronic expansion valve and adjusting the terminal device. One of them can be executed first, and then the other, or both can be executed at the same time. This is not limited in this embodiment.

[0071] It can be seen that the implementation of this optional embodiment can determine whether the temperature control device has completed the oil return operation according to the exhaust temperature parameters, defrost coil temperature parameters and / or oil return duration parameters of the temperature control device during the execution of the oil return operation, thereby improving the accuracy of determining whether the temperature control device has completed the oil return operation, enabling the temperature control device to exit the oil return operation in a timely manner, and, after determining that the temperature control device has completed the oil return operation, controlling the electronic expansion valve of the temperature control device to adjust from the first opening to the standard opening after a preset delay time, adjusting the device mode of the terminal device to be closed from the open mode to the closed mode, thereby optimizing the system operation efficiency of the temperature control device, improving the operating stability and reliability of the compressor of the temperature control device, reducing system failures, and thereby improving the overall operation stability of the temperature control device.

[0072] Embodiment 3 See also Figure 3 , Figure 3 1 is a schematic diagram of the structure of an oil return operation control device for a temperature control device disclosed in an embodiment of the present invention. Figure 3 The oil return operation control device of the temperature control device described can be applied to the temperature control device, wherein the temperature control device can have a heating function and / or a cooling function, and the temperature control device can include an air conditioning device, which is not limited in the embodiment of the present invention. Figure 3 As shown, the oil return operation control device of the temperature control device may include: A determination module 301 is used to determine a current operation mode of a temperature control device and a compressor operation parameter of a compressor corresponding to the temperature control device; The acquisition module 302 is used to acquire the mode operation parameters of the temperature control device in the current operation mode; The generating module 303 is used to generate oil return operation control parameters for the temperature control device according to the mode operation parameters and the compressor operation parameters, and control the temperature control device to perform the oil return operation according to the oil return operation control parameters.

[0073] It can be seen that implementation Figure 3 The oil return operation control device of the described temperature control device can determine the current operating mode of the temperature control device and the compressor operating parameters of the compressor corresponding to the temperature control device, obtain the mode operating parameters of the temperature control device under the current operating mode, generate oil return operation control parameters for the temperature control device according to the mode operating parameters and the compressor operating parameters, and control the temperature control device to perform the oil return operation according to the oil return operation control parameters, which can improve the accuracy of the oil return control of the temperature control device, optimize the system operating efficiency of the temperature control device, improve the operating stability and reliability of the compressor of the temperature control device, reduce system failures, and thereby improve the overall operating stability of the temperature control device.

[0074] In an optional embodiment, if Figure 4 As shown, the compressor operating parameters include compressor operating frequency parameters and compressor operating time parameters; The specific manner in which the generating module 303 generates the oil return operation control parameters for the temperature control device according to the mode operation parameters and the compressor operation parameters includes: Obtaining a compressor operation parameter threshold corresponding to the compressor, the compressor operation parameter threshold including a compressor operation frequency parameter threshold and a compressor operation duration parameter threshold; Determine whether the compressor operating frequency parameter is less than the compressor operating frequency parameter threshold, and whether the compressor operating duration parameter is greater than the compressor operating duration parameter threshold; When the compressor operating frequency parameter is less than the compressor operating frequency parameter threshold and the compressor operating duration parameter is greater than the compressor operating duration parameter threshold, judging whether the temperature control device meets the preset oil return operation condition according to the mode operating parameters; When the temperature control device meets the oil return operation condition, an oil return operation control parameter for the temperature control device is generated according to the mode operation parameter.

[0075] It can be seen that the implementation Figure 4 The oil return operation control device of the described temperature control device can determine the current operation mode of the temperature control device and the compressor operation parameters of the compressor corresponding to the temperature control device, obtain the mode operation parameters of the temperature control device in the current operation mode, obtain the compressor operation parameter threshold corresponding to the compressor, the compressor operation parameter threshold includes the compressor operation frequency parameter threshold and the compressor operation duration parameter threshold, judge whether the compressor operation frequency parameter is less than the compressor operation frequency parameter threshold, and whether the compressor operation duration parameter is greater than the compressor operation duration parameter threshold, when the compressor operation frequency parameter is less than the compressor operation frequency parameter threshold and the compressor operation duration parameter is greater than the compressor operation duration parameter threshold, judge whether the temperature control device meets the preset oil return operation condition according to the mode operation parameters, and can judge whether the temperature control device meets the preset oil return operation condition according to the compressor operation parameters and the mode operation parameters, improve the accuracy of the oil return operation operation of the temperature control device, generate the oil return operation control parameters for the temperature control device according to the mode operation parameters, and control the temperature control device to perform the oil return operation according to the oil return operation control parameters, which can improve the accuracy of the oil return control of the temperature control device, optimize the system operation efficiency of the temperature control device, improve the operation stability and reliability of the compressor of the temperature control device, reduce system failures, and thus improve the overall operation stability of the temperature control device.

[0076] In another optional embodiment, Figure 4 As shown, the current operation mode includes cooling mode or heating mode; The specific manner in which the acquisition module 302 acquires the mode operation parameters of the temperature control device in the current operation mode includes: When the current operation mode of the temperature control device includes a cooling mode, obtaining a condenser temperature parameter and a compressor temperature parameter of the temperature control device in the cooling mode, wherein the mode operation parameters in the cooling mode include a condenser temperature parameter and a compressor temperature parameter; When the current operation mode of the temperature control device includes a heating mode, a defrosting operation parameter of the temperature control device in the heating mode is acquired, and the mode operation parameter in the heating mode includes a defrosting operation parameter.

[0077] It can be seen that the implementation Figure 4The oil return operation control device of the described temperature control device can obtain the condenser temperature parameters and compressor temperature parameters of the temperature control device in the cooling mode when the current operating mode of the temperature control device includes the cooling mode, and obtain the defrost operation parameters of the temperature control device in the heating mode when the current operating mode of the temperature control device includes the heating mode. It can determine the corresponding mode operating parameters in different operating modes, improve the determination of whether the temperature control device meets the preset oil return operation conditions, and thereby improve the accuracy of the oil return operation operation of the temperature control device.

[0078] In yet another optional embodiment, Figure 4 As shown, the condenser temperature parameters include the condenser operating temperature parameters and the condenser frequency limiting temperature parameters, and the compressor temperature parameters include the compressor driving temperature parameters and the compressor frequency limiting temperature parameters; When the compressor operating frequency parameter is less than the compressor operating frequency parameter threshold and the compressor operating duration parameter is greater than the compressor operating duration parameter threshold, the generation module 303 determines whether the temperature control device meets the preset oil return operation condition according to the mode operating parameters. The specific method includes: When the current operation mode of the temperature control device includes a cooling mode, a condenser temperature threshold corresponding to the temperature control device is calculated according to the condenser frequency limit temperature parameter, and a compressor temperature threshold corresponding to the temperature control device is calculated according to the compressor frequency limit temperature parameter; Determine whether the condenser operating temperature parameter is less than the condenser temperature threshold, and whether the compressor driving temperature parameter is less than the compressor temperature threshold; When the condenser operating temperature parameter is less than the condenser temperature threshold, and the compressor driving temperature parameter is less than the compressor temperature threshold, determining that the temperature control device meets the oil return operation condition; When the current operation mode of the temperature control device includes the heating mode, it is determined whether the temperature control device is in the defrost operation mode according to the defrost operation parameters. When the temperature control device is not in the defrost operation mode, it is determined that the temperature control device meets the oil return operation condition.

[0079] It can be seen that implementation Figure 4The described oil return operation control device of the temperature control device can, when the current operating mode of the temperature control device includes a cooling mode, determine whether the condenser operating temperature parameter is less than the condenser temperature threshold and whether the compressor drive temperature parameter is less than the compressor temperature threshold; when the condenser operating temperature parameter is less than the condenser temperature threshold and the compressor drive temperature parameter is less than the compressor temperature threshold, determine that the temperature control device meets the oil return operation conditions; when the current operating mode of the temperature control device includes a heating mode, determine whether the temperature control device is in the defrost operation mode according to the defrost operation parameter; when the temperature control device is not in the defrost operation mode, determine that the temperature control device meets the oil return operation conditions; and can determine whether the temperature control device meets the preset oil return operation conditions according to the corresponding parameters under different operating modes of the temperature control device, thereby improving the accuracy and reliability of the judgment, thereby improving the accuracy of the oil return operation operation of the temperature control device, and improving the overall operating stability of the temperature control device.

[0080] In yet another optional embodiment, Figure 4 As shown, when the temperature control device meets the oil return operation condition, the specific manner in which the generation module 303 generates the oil return operation control parameters for the temperature control device according to the mode operation parameters includes: When the current operation mode of the temperature control device includes a refrigeration mode, generating a refrigeration mode oil return control parameter for the temperature control device according to the mode operation parameter corresponding to the refrigeration mode, the refrigeration mode oil return control parameter including a first electronic expansion valve control parameter, a first compressor control parameter and a first signal response parameter; When the current operating mode of the temperature control device includes a heating mode, heating mode oil return control parameters for the temperature control device are generated according to the mode operating parameters corresponding to the heating mode. The heating mode oil return control parameters include terminal device parameters corresponding to the temperature regulating device, second electronic expansion valve control parameters, second compressor control parameters and second signal response parameters.

[0081] It can be seen that the implementation Figure 4 The oil return operation control device of the described temperature control device can generate a first electronic expansion valve control parameter, a first compressor control parameter and a first signal response parameter for the temperature control device according to the mode operating parameters corresponding to the refrigeration mode when the current operating mode of the temperature control device includes a cooling mode; and can generate terminal device parameters, a second electronic expansion valve control parameter, a second compressor control parameter and a second signal response parameter corresponding to the temperature regulating device of the temperature control device according to the mode operating parameters corresponding to the heating mode when the current operating mode of the temperature control device includes a heating mode. The corresponding oil return operation control parameters can be generated under different operating modes of the temperature control device, thereby improving the accuracy and reliability of the oil return operation control of the temperature control device under different operating modes.

[0082] In yet another optional embodiment, Figure 4 As shown, the specific manner in which the generating module 303 controls the temperature control device to perform the oil return operation according to the oil return operation control parameter includes: When the current operation mode of the temperature control device includes a cooling mode, according to the first electronic expansion valve control parameter, controlling the electronic expansion valve of the temperature control device to adjust from a standard opening to a first opening in advance for a first preset time; Controlling the compressor operating frequency parameter of the compressor to increase the frequency to a first preset frequency according to the first compressor control parameter, and controlling the temperature control device not to respond to a received shutdown signal during the oil return operation according to the first signal response parameter, wherein the shutdown signal includes a normal shutdown signal of the whole machine or a shutdown signal due to reaching the temperature; When the current operation mode of the temperature control device includes a heating mode, the number of devices of the open terminal device corresponding to the temperature adjustment device is determined according to the terminal device parameters, and it is determined whether the number of devices reaches a preset open number, and the terminal device mode of the open terminal device is in the open mode; When the number of devices does not reach the preset number of devices to be turned on, the device mode of the closed terminal device corresponding to the temperature adjustment device is adjusted from the closed mode to the open mode; According to the second electronic expansion valve control parameter, the electronic expansion valve of the temperature control device is controlled to adjust from the standard opening to the second opening in advance for a second preset time period; The compressor operating frequency parameter of the compressor is controlled to be increased to a second preset frequency according to the second compressor control parameter, and the temperature control device is controlled not to respond to the received shutdown signal during the oil return operation according to the second signal response parameter.

[0083] It can be seen that the implementation Figure 4 The oil return operation control device of the temperature control equipment described can control the electronic expansion valve, compressor and signal corresponding strategy of the temperature control equipment according to the oil return operation control parameters under different operating modes of the temperature control equipment, realize the oil return operation operation of the temperature control equipment under different operating modes, improve the accuracy and reliability of the oil return operation control of the temperature control equipment under different operating modes, optimize the system operation efficiency of the temperature control equipment, improve the operation stability and reliability of the compressor of the temperature control equipment, reduce system failures, and thus improve the overall operation stability of the temperature control equipment.

[0084] In yet another optional embodiment, Figure 4 As shown, the oil return operation control device of the temperature control device may also include: The detection module 304 is used to monitor the device target parameters of the temperature control device during the process in which the generation module 303 controls the temperature control device to perform the oil return operation according to the oil return operation control parameter, and the device target parameters include the exhaust temperature parameter, the defrost coil temperature parameter and / or the oil return duration parameter; The judgment module 305 is used to judge whether the exhaust temperature parameter is greater than a preset exhaust temperature threshold. When the exhaust temperature parameter is greater than the exhaust temperature threshold, it is determined that the temperature control device has completed the oil return operation; and / or, The judgment module 305 is further used to judge whether the defrost coil temperature parameter is less than a preset defrost coil temperature threshold. When the defrost coil temperature parameter is less than the defrost coil temperature threshold, it is determined that the temperature control device has completed the oil return operation; and / or, The judgment module 305 is also used to judge whether the oil return duration parameter meets the preset oil return duration condition. When the oil return duration parameter meets the oil return duration condition, it is determined that the temperature control device has completed the oil return operation. And, the oil return operation control device of the temperature control device may also include: The control module 306 is used to control the electronic expansion valve of the temperature control device to adjust from the first opening to the standard opening after a preset delay time after the judgment module 305 determines that the temperature control device has completed the oil return operation; The adjustment module 307 is used to adjust the device mode of the closed terminal device from the open mode to the closed mode.

[0085] It can be seen that implementation Figure 4 The oil return operation control device of the described temperature control device can determine whether the temperature control device has completed the oil return operation according to the exhaust temperature parameters, defrost coil temperature parameters and / or oil return duration parameters of the temperature control device during the execution of the oil return operation, thereby improving the accuracy of determining whether the temperature control device has completed the oil return operation, enabling the temperature control device to exit the oil return operation in a timely manner, and, after determining that the temperature control device has completed the oil return operation, controlling the electronic expansion valve of the temperature control device to adjust from the first opening to the standard opening after a preset delay time, adjusting the device mode of the terminal device to be closed from the open mode to the closed mode, thereby optimizing the system operation efficiency of the temperature control device, improving the operation stability and reliability of the compressor of the temperature control device, reducing system failures, and thereby improving the overall operation stability of the temperature control device.

[0086] Embodiment 4 See also Figure 5 , Figure 5 FIG. 1 is a schematic diagram of the structure of another oil return operation control device of a temperature control device disclosed in an embodiment of the present invention. Figure 5As shown, the oil return operation control device of the temperature control device may include: A memory 401 storing executable program codes; a processor 402 coupled to the memory 401; The processor 402 calls the executable program code stored in the memory 401 to execute the steps in the oil return operation control method of the temperature control device described in the first embodiment of the present invention or the second embodiment of the present invention.

[0087] Embodiment 5 An embodiment of the present invention discloses a computer storage medium storing computer instructions. When the computer instructions are called, they are used to execute the steps in the oil return operation control method of the temperature control device described in Embodiment 1 or Embodiment 2 of the present invention.

[0088] Embodiment 6 An embodiment of the present invention discloses a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to enable a computer to execute the steps in the oil return operation control method of the temperature control device described in Example 1 or Example 2.

[0089] The device embodiments described above are only illustrative, wherein the modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, i.e., they may be located in one place, or they may be distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative work.

[0090] Through the specific description of the above embodiments, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on such an understanding, the above technical solution can be essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, and the storage medium includes a read-only memory (ROM), a random access memory (RAM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), a one-time programmable read-only memory (OTPROM), an electronically erasable rewritable read-only memory (EEPROM), a compact disc (CD-ROM) or other optical disc storage, magnetic disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

[0091] Finally, it should be noted that the oil return operation control method and device of a temperature control device disclosed in the embodiment of the present invention discloses only the preferred embodiments of the present invention, which are only used to illustrate the technical scheme of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, it should be understood by those skilled in the art that the technical schemes described in the aforementioned embodiments can still be modified, or some of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical schemes from the spirit and scope of the technical schemes of the various embodiments of the present invention.

Claims

1. A method for controlling oil return operation of a temperature control device, characterized in that: The method comprises: determining a current operating mode of a temperature control device and compressor operating parameters of a compressor corresponding to the temperature control device; Obtaining mode operation parameters of the temperature control device in the current operation mode; An oil return operation control parameter for the temperature control device is generated according to the mode operation parameter and the compressor operation parameter, and the temperature control device is controlled to perform an oil return operation according to the oil return operation control parameter.

2. The oil return operation control method of the temperature control device according to claim 1, characterized in that: The compressor operation parameters include compressor operation frequency parameters and compressor operation duration parameters; The step of generating the oil return operation control parameter for the temperature control device according to the mode operation parameter and the compressor operation parameter comprises: Acquire a compressor operation parameter threshold corresponding to the compressor, wherein the compressor operation parameter threshold includes a compressor operation frequency parameter threshold and a compressor operation duration parameter threshold; Determine whether the compressor operating frequency parameter is less than the compressor operating frequency parameter threshold, and whether the compressor operating duration parameter is greater than the compressor operating duration parameter threshold; When the compressor operating frequency parameter is less than the compressor operating frequency parameter threshold and the compressor operating duration parameter is greater than the compressor operating duration parameter threshold, judging whether the temperature control device meets the preset oil return operation condition according to the mode operation parameter; When the temperature control device satisfies the oil return operation condition, an oil return operation control parameter for the temperature control device is generated according to the mode operation parameter.

3. The oil return operation control method of the temperature control device according to claim 2, characterized in that: The current operation mode includes a cooling mode or a heating mode; The obtaining of the mode operation parameters of the temperature control device in the current operation mode includes: When the current operation mode of the temperature control device includes the cooling mode, acquiring a condenser temperature parameter and a compressor temperature parameter of the temperature control device in the cooling mode, wherein the mode operation parameters in the cooling mode include the condenser temperature parameter and the compressor temperature parameter; When the current operation mode of the temperature control device includes the heating mode, the defrosting operation parameters of the temperature control device in the heating mode are acquired, and the mode operation parameters in the heating mode include the defrosting operation parameters.

4. The oil return operation control method of the temperature control device according to claim 3, characterized in that: The condenser temperature parameters include condenser operating temperature parameters and condenser frequency limiting temperature parameters, and the compressor temperature parameters include compressor driving temperature parameters and compressor frequency limiting temperature parameters; When the compressor operating frequency parameter is less than the compressor operating frequency parameter threshold and the compressor operating duration parameter is greater than the compressor operating duration parameter threshold, judging whether the temperature control device meets the preset oil return operation condition according to the mode operating parameter includes: When the current operation mode of the temperature control device includes the cooling mode, a condenser temperature threshold corresponding to the temperature control device is calculated according to the condenser frequency limiting temperature parameter, and a compressor temperature threshold corresponding to the temperature control device is calculated according to the compressor frequency limiting temperature parameter; Determining whether the condenser operating temperature parameter is less than the condenser temperature threshold, and whether the compressor driving temperature parameter is less than the compressor temperature threshold; When the condenser operating temperature parameter is less than the condenser temperature threshold, and the compressor driving temperature parameter is less than the compressor temperature threshold, determining that the temperature control device meets the oil return operation condition; When the current operating mode of the temperature control device includes the heating mode, it is determined whether the temperature control device is in the defrost operation mode based on the defrost operation parameters. When the temperature control device is not in the defrost operation mode, it is determined that the temperature control device meets the oil return operation condition.

5. The oil return operation control method of the temperature control device according to claim 3 or 4, characterized in that: When the temperature control device meets the oil return operation condition, generating the oil return operation control parameter for the temperature control device according to the mode operation parameter includes: When the current operation mode of the temperature control device includes the refrigeration mode, generating a refrigeration mode oil return control parameter for the temperature control device according to the mode operation parameter corresponding to the refrigeration mode, the refrigeration mode oil return control parameter including a first electronic expansion valve control parameter, a first compressor control parameter and a first signal response parameter; When the current operating mode of the temperature control device includes the heating mode, the heating mode return oil control parameters for the temperature control device are generated according to the mode operating parameters corresponding to the heating mode, and the heating mode return oil control parameters include the terminal device parameters corresponding to the temperature regulating device, the second electronic expansion valve control parameters, the second compressor control parameters and the second signal response parameters.

6. The oil return operation control method of the temperature control device according to claim 5, characterized in that: The step of controlling the temperature control device to perform the oil return operation according to the oil return operation control parameter includes: When the current operation mode of the temperature control device includes the cooling mode, according to the first electronic expansion valve control parameter, the electronic expansion valve of the temperature control device is controlled to be adjusted from the standard opening to the first opening in advance for a first preset time period; Controlling the compressor operating frequency parameter of the compressor to increase the frequency to a first preset frequency according to the first compressor control parameter, and controlling the temperature control device not to respond to a received shutdown signal during the oil return operation according to the first signal response parameter, wherein the shutdown signal includes a normal shutdown signal of the whole machine or a shutdown signal due to reaching the temperature; When the current operation mode of the temperature control device includes the heating mode, the number of the open terminal devices corresponding to the temperature adjustment device is determined according to the terminal device parameters, and it is judged whether the number of devices reaches a preset open number, and the terminal device mode of the open terminal device is in the open mode; When the number of devices does not reach the preset number of devices to be turned on, adjusting the device mode of the closed terminal device corresponding to the temperature adjustment device from the closed mode to the open mode; According to the second electronic expansion valve control parameter, controlling the electronic expansion valve of the temperature control device to adjust from a standard opening to a second opening in advance for a second preset time period; The compressor operating frequency parameter of the compressor is controlled to be increased to a second preset frequency according to the second compressor control parameter, and the temperature control device is controlled not to respond to a received shutdown signal during the oil return operation according to the second signal response parameter.

7. The oil return operation control method of the temperature control device according to claim 6, characterized in that: The method further comprises: In the process of controlling the temperature control device to perform the oil return operation according to the oil return operation control parameter, monitoring the device target parameters of the temperature control device, the device target parameters including the exhaust temperature parameter, the defrost coil temperature parameter and / or the oil return duration parameter; Determining whether the exhaust temperature parameter is greater than a preset exhaust temperature threshold, and when the exhaust temperature parameter is greater than the exhaust temperature threshold, determining that the temperature control device has completed the oil return operation; and / or, Determining whether the defrost coil temperature parameter is less than a preset defrost coil temperature threshold, and when the defrost coil temperature parameter is less than the defrost coil temperature threshold, determining that the temperature control device has completed the oil return operation; and / or, Determining whether the oil return duration parameter satisfies a preset oil return duration condition, and when the oil return duration parameter satisfies the oil return duration condition, determining that the temperature control device has completed the oil return operation; And, the method further comprises: After determining that the temperature control device has completed the oil return operation, controlling the electronic expansion valve of the temperature control device to adjust from the first opening to the standard opening after a preset delay time; The device mode of the shutdown terminal device is adjusted from the on mode to the off mode.

8. An oil return operation control device for a temperature control device, characterized in that: The device comprises: a determination module, configured to determine a current operation mode of a temperature control device and a compressor operation parameter of a compressor corresponding to the temperature control device; An acquisition module, used for acquiring a mode operation parameter of the temperature control device in the current operation mode; A generating module is used to generate an oil return operation control parameter for the temperature control device according to the mode operation parameter and the compressor operation parameter, and control the temperature control device to perform an oil return operation according to the oil return operation control parameter.

9. An oil return operation control device for a temperature control device, characterized in that: The device comprises: A memory storing executable program code; a processor coupled to the memory; The processor calls the executable program code stored in the memory to execute the oil return operation control method of the temperature control device according to any one of claims 1 to 7.

10. A computer storage medium, characterized in that: The computer storage medium stores computer instructions, and when the computer instructions are called, they are used to execute the oil return operation control method of the temperature control device according to any one of claims 1 to 7.

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