Unit temperature control device and method, air conditioning unit and storage medium

Abstract

The invention discloses a unit temperature control device and method, an air conditioning unit and a storage medium. The device comprises a first temperature sensor arranged on a pipeline between a surface air cooler and an evaporator of the unit and used for detecting the temperature of the surface air cooler; the second temperature sensor is arranged on a pipeline between the evaporator and the fan section and is used for detecting the temperature of the evaporator; the third temperature sensor is arranged at an outlet of the fan section and used for detecting the air supply temperature; the controller is used for determining a corresponding replacement difference value according to the operation mode when at least one of the three temperature sensors fails; and replacing the detection value of the failed temperature sensor according to the replacement difference value and the detection value of the non-failed temperature sensor. The multiple temperature sensors are arranged in the unit, when one sensor breaks down or fails due to damage, detection values of other sensors can be used for related equivalent replacement, long-time stable operation of the unit is guaranteed, and the accurate control capacity of the unit is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning units, and in particular to a unit temperature control device, method, air conditioning unit and storage medium. Background Art

[0002] The temperature and humidity equivalent replacement reliable operation technology is mainly used in air conditioning, heating, ventilation and air conditioning (HVAC) systems, or more broadly in environmental control systems. The background of this technology is based on the demand for precise control of temperature and humidity in actual operation scenarios. In industrial, commercial and even home environments, maintaining specific temperature and humidity conditions has a significant impact on product quality, energy efficiency, human comfort and health.

[0003] The temperature data of the air-conditioning unit fluctuates during operation, resulting in inaccurate temperature control and inability of the unit to operate stably.

[0004] With regard to the problem in the prior art that unit temperature data fluctuations lead to unstable operation, no effective solution has been proposed yet. Summary of the invention

[0005] The embodiments of the present invention provide a unit temperature control device, method, air conditioning unit and storage medium to solve the problem in the prior art that the unit temperature data fluctuates and thus cannot operate stably.

[0006] In order to solve the above technical problems, the present invention provides a temperature control device for a unit, wherein the device comprises: a first temperature sensor, arranged on a pipeline between a surface cooler and an evaporator of the unit, for detecting the temperature of the surface cooler; a second temperature sensor, arranged on a pipeline between the evaporator and a fan section, for detecting the temperature of the evaporator; a third temperature sensor, arranged at an outlet of the fan section, for detecting the supply air temperature;

[0007] The controller is used to determine the corresponding replacement difference value according to the operation mode of the three temperature sensors when at least one of the three temperature sensors fails; and replace the detection value of the failed temperature sensor according to the replacement difference value and the detection value of the non-failed temperature sensor.

[0008] Furthermore, the controller comprises:

[0009] A first control module is used to replace the detection value of the failed temperature sensor according to the first refrigeration replacement difference value, the second refrigeration replacement difference value and the detection value of the non-failed temperature sensor when at least one of the three temperature sensors fails in the refrigeration mode;

[0010] The second control module is used to replace the detection value of the failed temperature sensor according to the first heating replacement difference, the second heating replacement difference and the detection value of the non-failed temperature sensor when at least one of the three temperature sensors fails in the heating mode.

[0011] The present invention also provides a unit temperature control method, which is applied to the above-mentioned unit temperature control device, wherein the method includes: detecting whether the first temperature sensor, the second temperature sensor and the third temperature sensor fail; when at least one of the three temperature sensors fails, determining a corresponding replacement difference according to its operating mode; and replacing the detection value of the failed temperature sensor according to the replacement difference and the detection value of the non-failed temperature sensor.

[0012] Furthermore, a corresponding replacement difference is determined according to its operating mode, including: if the unit operates in a cooling mode, after the cooler and the evaporator are operating stably, a first refrigeration replacement difference is determined according to the average temperature difference between the evaporator temperature and the cooler temperature; and a second refrigeration replacement difference is determined according to the average temperature difference between the supply air temperature and the evaporator temperature.

[0013] Furthermore, a corresponding replacement difference is determined according to its operating mode, including: if the unit operates in a heating mode, after the cooler and the evaporator are operating stably, a first heating replacement difference is determined according to the average temperature difference between the evaporator temperature and the cooler temperature; and a second heating replacement difference is determined according to the average temperature difference between the supply air temperature and the evaporator temperature.

[0014] Further, if the unit operates in the cooling mode, the replacement difference corresponding to the cooling mode includes: a first cooling replacement difference ΔTl1 and a second cooling replacement difference ΔTl2;

[0015] Replacing the detection value of the failed temperature sensor according to the replacement difference and the detection value of the non-failed temperature sensor includes:

[0016] If the first temperature sensor is a failed temperature sensor, the detection value of the first temperature sensor is replaced by: evaporator temperature + ΔTl1, or supply air temperature - ΔTl2 + ΔTl1;

[0017] If the second temperature sensor is a failed temperature sensor, the detection value of the second temperature sensor is replaced by: the surface cooler temperature - ΔTl1, or the supply air temperature - ΔTl2;

[0018] If the third temperature sensor is a failed temperature sensor, the detection value of the third temperature sensor is replaced by: condenser temperature - ΔTl1 + ΔTl2, or, evaporator temperature + ΔTl2.

[0019] Further, if the unit operates in a heating mode, the replacement difference corresponding to the heating mode includes: a first heating replacement difference ΔTr1 and a second heating replacement difference ΔTr2;

[0020] Replacing the detection value of the failed temperature sensor according to the replacement difference and the detection value of the non-failed temperature sensor includes:

[0021] If the first temperature sensor is a failed temperature sensor, the detection value of the first temperature sensor is replaced by: evaporator temperature - ΔTr2, or supply air temperature + ΔTr2 - ΔTr1;

[0022] If the second temperature sensor is a failed temperature sensor, the detection value of the second temperature sensor is replaced by: the condenser temperature + ΔTr1, or the supply air temperature + ΔTr2;

[0023] If the third temperature sensor is a failed temperature sensor, the detection value of the third temperature sensor is replaced by: condenser temperature+ΔTr1-ΔTr2, or, evaporator temperature-ΔTr2.

[0024] Further, when at least one of the three temperature sensors fails, the detection value of the failed temperature sensor is replaced according to the replacement difference and the detection value of the non-failed temperature sensor, including: when one of the three temperature sensors fails and the other two temperature sensors are not failed, determining the replacement value according to the replacement difference and the detection value of the non-failed temperature sensor; comparing whether the replacement values ​​corresponding to the two non-failed temperature sensors are the same; if they are the same, directly replacing the detection value of the failed temperature sensor; if they are not the same, replacing the detection value of the failed temperature sensor after taking the average of the two replacement values.

[0025] The present invention also provides an air conditioning unit, wherein the air conditioning unit comprises the above-mentioned unit temperature control device.

[0026] The present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein the program implements the above method when executed by a processor.

[0027] The present invention also provides an electronic device, which includes: one or more processors; a storage device for storing one or more programs, when the one or more programs are executed by the one or more processors, the one or more processors implement the method as described above.

[0028] By applying the technical solution of the present invention, when a dual-cooling source constant temperature and humidity unit is controlled and operated, multiple temperature sensors are set in the unit for data collection. When a sensor fails or is damaged, the detection values ​​of other sensors can be used to immediately perform relevant equivalent replacements, thereby ensuring long-term stable operation of the unit, ensuring the unit's precise control capability, and avoiding abnormal shutdowns caused by sensor damage, control deviations and other problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic diagram of the structure of a unit according to an embodiment of the present invention;

[0030] Figure 2 is a schematic diagram of an air treatment process according to an embodiment of the present invention;

[0031] Figure 3 is a flow chart of a method for controlling unit temperature according to an embodiment of the present invention;

[0032] Figure 4 Schematic diagram of the temperature control principle of a unit according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all 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.

[0034] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0035] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0036] It should be understood that although the terms first, second, third, etc. may be used to describe the temperature sensor in the embodiments of the present invention, these should not be limited to these terms. These terms are only used to distinguish the temperature sensors. For example, without departing from the scope of the embodiments of the present invention, the first temperature sensor may also be referred to as the second temperature sensor, and similarly, the second temperature sensor may also be referred to as the first temperature sensor.

[0037] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0038] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.

[0039] The optional embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0040] Example 1

[0041] Figure 1 is a schematic diagram of the structure of a unit according to an embodiment of the present invention, such as Figure 1 As shown, in this embodiment, the unit is mainly composed of a cooling section, an evaporation section, a heating and humidification section, a variable frequency fan section, a DDC controller, several air valves, and three temperature sensors. The first temperature sensor T1 is installed after the cooling device and before the evaporator to detect the temperature of the cooling device; the second temperature sensor T2 is installed after the evaporator and before the fan section to detect the evaporator temperature; the third temperature sensor T3 is installed at the outlet of the fan section to detect the air supply temperature. Figure 2 is a schematic diagram of an air treatment process according to an embodiment of the present invention. Figure 1 and Figure 2As shown, the air passes through the air intake section, filtration section, chemical section, surface cooling section, intermediate section, evaporation section, electric heating section, humidification section and fan section in sequence. When the unit is running, the surface cooling coil water valve is opened first. When the coil water valve is opened to the maximum and the outlet air temperature does not meet the requirement, the direct expansion outdoor unit is turned on synchronously. The outlet air temperature requirement can be pre-set, which varies according to different places and different types of use, that is, the setting parameters on the DDC controller display panel can be changed.

[0042] The present embodiment provides a unit temperature control device, which includes: a first temperature sensor, which is arranged on the pipeline between the unit's condenser and evaporator, and is used to detect the condenser temperature; a second temperature sensor, which is arranged on the pipeline between the evaporator and the fan section, and is used to detect the evaporator temperature; a third temperature sensor, which is arranged at the fan section outlet, and is used to detect the supply air temperature; a controller, which is used to determine a corresponding replacement difference according to its operating mode when at least one of the three temperature sensors fails; and replace the detection value of the failed temperature sensor according to the replacement difference and the detection value of the non-failed temperature sensor.

[0043] The ability to achieve equivalent replacement and reliable operation of air-conditioning unit temperature data is an important development in the field of temperature control. It solves the limitations of traditional control methods and not only plays a role in improving the quality of life, but also promotes efficient, energy-saving and environmentally friendly practices in the industrial field.

[0044] Regarding how to specifically implement equivalent replacement of temperature data in this embodiment, this embodiment provides a preferred implementation, that is, the controller includes:

[0045] A first control module is used to replace the detection value of the failed temperature sensor according to the first refrigeration replacement difference value, the second refrigeration replacement difference value and the detection value of the non-failed temperature sensor when at least one of the three temperature sensors fails in the refrigeration mode;

[0046] The second control module is used to replace the detection value of the failed temperature sensor according to the first heating replacement difference, the second heating replacement difference and the detection value of the non-failed temperature sensor when at least one of the three temperature sensors fails in the heating mode.

[0047] This embodiment also provides an air conditioning unit, which includes the unit temperature control device introduced above.

[0048] In this embodiment, when the dual-cooling source constant temperature and humidity unit is under control and operation, a plurality of temperature sensors are arranged in the unit for data collection by adopting the DDC intelligent control method. When a sensor fails or is damaged, the detection values ​​of other sensors can be used to immediately perform relevant equivalent replacements, thereby ensuring long-term stable operation of the unit, guaranteeing the precise control capability of the unit, and avoiding abnormal shutdowns caused by sensor damage, control deviations and other problems.

[0049] Example 2

[0050] According to an embodiment of the present invention, an embodiment of a unit temperature control method is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0051] Figure 3 is a flow chart of a method for controlling unit temperature according to an embodiment of the present invention. Figure 3 As shown, the method comprises the following steps:

[0052] Step S301, detecting whether the first temperature sensor, the second temperature sensor and the third temperature sensor are invalid;

[0053] Step S302, when at least one of the three temperature sensors fails, determining a corresponding replacement difference value according to its operation mode; and replacing the detection value of the failed temperature sensor according to the replacement difference value and the detection value of the non-failed temperature sensor.

[0054] In this embodiment, multiple temperature sensors are set in the unit for data collection. When a sensor fails or is damaged, the detection values ​​of other sensors can be used to immediately perform relevant equivalent replacements, which can ensure long-term stable operation of the unit, ensure the precise control capability of the unit, and avoid abnormal shutdowns caused by sensor damage, control deviations and other problems.

[0055] When the unit is in different operating modes, the air passing through the unit during operation should be considered. Figure 2 The temperature changes in each segment are different, so the replacement difference values ​​set in different operating modes are different. In addition, the replacement schemes in different operating modes are also different. The replacement schemes in cooling mode and heating mode are introduced below.

[0056] 1) Cooling mode

[0057] The replacement difference values ​​corresponding to the cooling mode include: a first cooling replacement difference value ΔTl1 and a second cooling replacement difference value ΔTl2.

[0058] Determining the corresponding replacement difference value according to the cooling mode can be achieved through the following preferred implementations:

[0059] If the unit operates in cooling mode, after the condenser and the evaporator are operating stably, the first refrigeration replacement difference is determined based on the average temperature difference between the evaporator temperature and the condenser temperature; and the second refrigeration replacement difference is determined based on the average temperature difference between the supply air temperature and the evaporator temperature.

[0060] Considering that in the stable operation stage of the unit, the temperature difference between the evaporator temperature and the surface cooler temperature, and the temperature difference between the air supply point and the evaporator temperature can be more effectively and accurately reflected. Based on this, the first refrigeration replacement difference and the second refrigeration replacement difference are set, and the data setting is more accurate, which is conducive to the accuracy of the subsequent execution of the detection value replacement plan.

[0061] As for the specific replacement scheme, how to replace the detection value of the failed temperature sensor according to the replacement difference and the detection value of the non-failed temperature sensor is introduced as follows:

[0062] If the first temperature sensor is a failed temperature sensor, the detection value of the first temperature sensor is replaced by: evaporator temperature + ΔTl1, or, supply air temperature - ΔTl2 + ΔTl1;

[0063] If the second temperature sensor is a failed temperature sensor, the detection value of the second temperature sensor is replaced by: the surface cooler temperature - ΔTl1, or the supply air temperature - ΔTl2;

[0064] If the third temperature sensor is a failed temperature sensor, the detection value of the third temperature sensor is replaced by: condenser temperature - ΔTl1 + ΔTl2, or, evaporator temperature + ΔTl2.

[0065] The above replacement scheme is set in this embodiment to take into account the conversion of control targets, in order to make the control system run stably and achieve stable control of the unit. The control targets are mainly the temperature after the cooler, the temperature after the evaporator, and the temperature of the fan air outlet, which respectively control the working conditions after refrigeration and the air delivered to the room. By adjusting these parameters, the system can achieve stable control operation. The cooler temperature, evaporator temperature, and air supply temperature are all key data related to the stable control of the unit. Therefore, this embodiment sets three temperature sensors to achieve timely and effective replacement of the detection value of the failed temperature sensor, thereby most effectively ensuring the stable operation of the unit.

[0066] 2) Heating mode

[0067] The replacement difference values ​​corresponding to the heating mode include: a first heating replacement difference value ΔTr1 and a second heating replacement difference value ΔTr2.

[0068] Determining the corresponding replacement difference according to the heating mode can be achieved through the following preferred implementations:

[0069] If the unit operates in heating mode, after the condenser and the evaporator are operating stably, the first heating replacement difference is determined based on the average temperature difference between the evaporator temperature and the condenser temperature; and the second heating replacement difference is determined based on the average temperature difference between the supply air temperature and the evaporator temperature.

[0070] Considering that in the stable operation stage of the unit, the temperature difference between the evaporator temperature and the condenser temperature, and the temperature difference between the air supply point and the evaporator temperature can be more effectively and accurately reflected. Based on this, the first heating replacement difference and the second heating replacement difference are set, and the data setting is more accurate, which is conducive to the accuracy of the subsequent execution of the detection value replacement plan.

[0071] As for the specific replacement scheme, how to replace the detection value of the failed temperature sensor according to the replacement difference and the detection value of the non-failed temperature sensor is introduced as follows:

[0072] If the first temperature sensor is a failed temperature sensor, the detection value of the first temperature sensor is replaced by: evaporator temperature - ΔTr2, or supply air temperature + ΔTr2 - ΔTr1;

[0073] If the second temperature sensor is a failed temperature sensor, the detection value of the second temperature sensor is replaced by: the surface cooler temperature + ΔTr1, or the supply air temperature + ΔTr2;

[0074] If the third temperature sensor is a failed temperature sensor, the detection value of the third temperature sensor is replaced by: condenser temperature+ΔTr1-ΔTr2, or, evaporator temperature-ΔTr2.

[0075] The above replacement scheme is set in this embodiment to take into account the conversion of control targets, in order to make the control system run stably and achieve stable control of the unit. The control targets are mainly the temperature after the cooler, the temperature after the evaporator, and the temperature of the fan air outlet, which respectively control the working conditions after refrigeration and the air delivered to the room. By adjusting these parameters, the system can achieve stable control operation. The cooler temperature, evaporator temperature, and air supply temperature are all key data related to the stable control of the unit. Therefore, this embodiment sets three temperature sensors to achieve timely and effective replacement of the detection value of the failed temperature sensor, thereby most effectively ensuring the stable operation of the unit.

[0076] The calculation formula for each of the above replacement schemes is based on the functions and working effects of the cooler, evaporator, electric heater and other devices. The cooler and evaporator have the functions of cooling, cooling and dehumidifying, while the electric heater has the function of heating. For example, in the cooling mode, the cooler and evaporator have the functions of cooling and dehumidifying, the electric heater has the function of heating, and the electric humidifier has the function of humidifying. Therefore, the cooling mode generally complies with the following rules: evaporator temperature < cooler temperature < electric heater temperature (supply air temperature). Therefore, when the first temperature sensor is a failed temperature sensor, the detection value of the first temperature sensor is replaced by: evaporator temperature + ΔTl1, or, supply air temperature - ΔTl2 + ΔTl1. Based on the above rules, the specific technical formula of each replacement scheme can be determined to ensure that the temperature data after replacement is more accurate and effective.

[0077] The replacement scheme provided in this embodiment provides two replacement schemes for the detection value of the failed sensor when one of the three temperature sensors fails and the other two temperature sensors are not failed. For how to choose between the two replacement schemes, you can choose one to replace. It is also possible to compare whether the replacement values ​​corresponding to the two non-failed temperature sensors are the same; if they are the same, the detection value of the failed temperature sensor is directly replaced; if they are not the same, the detection value of the failed temperature sensor is replaced after taking the average of the two replacement values. Thereby, the data accuracy of the replaced detection value can be guaranteed, which is closer to the temperature data that can ensure the stable operation of the unit. If two of the three temperature sensors fail, the detection value of the failed temperature sensor is directly replaced according to the replacement difference and the detection value of the non-failed temperature sensor. For example, in the heating mode, if the first temperature sensor and the second temperature sensor are both failed temperature sensors, the detection value of the first temperature sensor is replaced with: supply air temperature + ΔTr2-ΔTr1; the detection value of the second temperature sensor is replaced with: supply air temperature + ΔTr2. Based on this, the control accuracy of the key temperature data of the unit can be achieved, and the control unit can be controlled to operate stably for a long time.

[0078] Example 3

[0079] Figure 4 Schematic diagram of the temperature control principle of the unit according to an embodiment of the present invention. Figure 4 As shown, the control principle is introduced as follows:

[0080] 1) Mode 1-Summer cooling mode of the unit

[0081] When the unit is in the summer cooling mode, with the surface cooling coil and direct expansion evaporator both turned on and running stably, the DDC controller detects the average temperature difference between the rear of the evaporator and the rear of the surface cooler, and assigns it to the read-write parameter "target temperature replacement difference ΔTl1 after cooling surface cooler"; it detects the average temperature difference between the air supply point and the rear of the evaporator, and assigns it to the read-write parameter "target temperature replacement difference ΔTl2 after evaporator", ΔTl1 and ΔTl2 are both positive differences compared with each other.

[0082] At this time, when the T1, T2, and T3 sensors in the unit fail, the equivalent replacement is as follows:

[0083] ① The temperature sensor behind the surface cooler fails:

[0084] The temperature after the cooler T1 (i.e. the above-mentioned cooler temperature) = the temperature after the evaporator T2 + the target temperature after the cooling cooler replacement difference ΔTl1;

[0085] The temperature after the condenser T1 = the supply air temperature T3 - the target temperature replacement difference ΔTl2 after the evaporator + the target temperature replacement difference ΔTl1 after the cooling condenser.

[0086] ②The temperature sensor after the evaporator fails:

[0087] Evaporator rear temperature T2 (i.e. the above evaporator temperature) = surface cooler rear temperature T1 - cooling surface cooler rear target temperature replacement difference ΔTl1;

[0088] The temperature after the evaporator T2 = the supply air temperature T3 - the target temperature after the evaporator replaced the difference ΔTl2.

[0089] ③ The air supply temperature sensor fails:

[0090] Supply air temperature T3 = temperature after the air cooler T1 - target temperature replacement difference after the cooling air cooler ΔTl1 + target temperature replacement difference after the evaporator ΔTl2;

[0091] Supply air temperature T3 = post-evaporator temperature T2 + post-evaporator target temperature replacement difference ΔTl2.

[0092] 2) Mode 2- Winter heating mode of the unit

[0093] In the winter heating mode of the unit, when the surface cooling coil (the surface cooling section is a dual-purpose hot and cold coil, and hot water is used for heating in winter) and the direct expansion evaporator are both turned on and running stably, the DDC controller detects the average temperature difference between the rear of the evaporator and the rear of the surface cooling coil, and assigns it to the read-write level parameter "replacement difference ΔTr1 of target temperature after heating surface cooling coil"; the average temperature difference between the air supply point of the unit and the rear of the evaporator is detected, and assigned to the read-write level parameter "replacement difference ΔTr2 of target temperature after evaporator", and ΔTr1 and ΔTr2 are both positive differences compared with each other.

[0094] At this time, when the T1, T2, and T3 sensors in the unit fail, the equivalent replacement is as follows:

[0095] ① The temperature sensor behind the surface cooler fails:

[0096] Temperature after cooler T1 = temperature after evaporator T2 - target temperature after evaporator replacement difference ΔTr2;

[0097] The temperature after the condenser T1 = the supply air temperature T3 + the target temperature replacement difference ΔTr2 after the evaporator - the target temperature replacement difference ΔTr1 after the heating condenser.

[0098] ②The temperature sensor after the evaporator fails:

[0099] Evaporator rear temperature T2 = condenser rear temperature T1 + heating condenser rear target temperature replacement difference ΔTr1;

[0100] The post-evaporator temperature T2 = the supply air temperature T3 + the post-evaporator target temperature replacement difference ΔTr2.

[0101] ③ The air supply temperature sensor fails:

[0102] Supply air temperature T3 = temperature after the air cooler T1 + target temperature replacement difference after the heating air cooler ΔTr1 - target temperature replacement difference after the evaporator ΔTr2;

[0103] Supply air temperature T3 = after-evaporator temperature T2 - after-evaporator target temperature replacement difference ΔTr2.

[0104] During the control and operation of the dual-cooling source constant temperature and humidity unit, multiple temperature sensors are set up in the unit for data collection. When a sensor fails or is damaged, the detection values ​​of other sensors can be used to immediately perform relevant equivalent replacements. This can ensure long-term stable operation of the unit, ensure the unit's precise control capabilities, and avoid abnormal shutdowns caused by sensor damage, control deviations and other problems.

[0105] Example 4

[0106] This embodiment provides an electronic device, which is used in a method for controlling temperature of a unit. The electronic device includes: at least one processor; and a memory connected to the at least one processor in communication; wherein:

[0107] The memory stores instructions that can be executed by the one processor, and the instructions are executed by the at least one processor to enable the at least one processor to: detect whether the first temperature sensor, the second temperature sensor and the third temperature sensor fail; when at least one of the three temperature sensors fails, determine the corresponding replacement difference value according to its operating mode; replace the detection value of the failed temperature sensor according to the replacement difference value and the detection value of the non-failed temperature sensor.

[0108] Example 5

[0109] The embodiment of the present invention provides a software, which is used to execute the technical solutions described in the above embodiment and preferred implementation manner.

[0110] An embodiment of the present invention provides a non-volatile computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions can execute the unit temperature control method in any of the above method embodiments.

[0111] The above-mentioned software is stored in the above-mentioned storage medium, which includes but is not limited to: a CD, a floppy disk, a hard disk, an erasable memory, etc.

[0112] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0113] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0114] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0115] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0116] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0117] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0118] The above product can execute the method provided by the embodiment of the present invention, and has the functional modules and beneficial effects corresponding to the execution method. For technical details not described in detail in this embodiment, please refer to the method provided by the embodiment of the present invention.

[0119] The electronic devices of the embodiments of the present invention exist in various forms, including but not limited to:

[0120] (1) Mobile communication devices: These devices are characterized by their mobile communication functions and their main purpose is to provide voice and data communications. These terminals include: smart phones (such as iPhone), multimedia phones, functional phones, and low-end phones.

[0121] (2) Ultra-mobile personal computer devices: These devices fall into the category of personal computers, have computing and processing capabilities, and generally also have mobile Internet access features. These terminals include: PDA, MID and UMPC devices, such as iPad.

[0122] (3) Portable entertainment devices: These devices can display and play multimedia content. They include audio and video players (such as iPods), handheld game consoles, e-books, as well as smart toys and portable car navigation devices.

[0123] (4) Server: A device that provides computing services. The server consists of a processor, hard disk, memory, device bus, etc. The server is similar to the general computer architecture, but because it needs to provide highly reliable services, it has higher requirements in terms of processing power, stability, reliability, security, scalability, manageability, etc.

[0124] (5) Other electronic devices with data interaction functions, such as televisions, large-screen cars, etc.

[0125] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A unit temperature control device, characterized in that: The device comprises: Three temperature sensors: the first temperature sensor is arranged on the pipeline between the surface cooler and the evaporator of the unit, and is used to detect the surface cooler temperature; the second temperature sensor is arranged on the pipeline between the evaporator and the fan section, and is used to detect the evaporator temperature; the third temperature sensor is arranged at the outlet of the fan section, and is used to detect the supply air temperature; The controller is used to determine the corresponding replacement difference value according to the operation mode of the three temperature sensors when at least one of the three temperature sensors fails; and replace the detection value of the failed temperature sensor according to the replacement difference value and the detection value of the non-failed temperature sensor.

2. The device according to claim 1, characterized in that The controller comprises: A first control module is used to replace the detection value of the failed temperature sensor according to the first refrigeration replacement difference value, the second refrigeration replacement difference value and the detection value of the non-failed temperature sensor when at least one of the three temperature sensors fails in the refrigeration mode; The second control module is used to replace the detection value of the failed temperature sensor according to the first heating replacement difference, the second heating replacement difference and the detection value of the non-failed temperature sensor when at least one of the three temperature sensors fails in the heating mode.

3. A unit temperature control method, applied to the unit temperature control device according to claim 1 or 2, characterized in that: The method comprises: Detecting whether the first temperature sensor, the second temperature sensor, and the third temperature sensor are invalid; When at least one of the three temperature sensors fails, a corresponding replacement difference is determined according to its operation mode; and the detection value of the failed temperature sensor is replaced according to the replacement difference and the detection value of the non-failed temperature sensor.

4. The method according to claim 3, characterized in that The corresponding replacement difference is determined according to its operation mode, including: If the unit operates in cooling mode, after the condenser and the evaporator are operating stably, the first refrigeration replacement difference is determined based on the average temperature difference between the evaporator temperature and the condenser temperature; and the second refrigeration replacement difference is determined based on the average temperature difference between the supply air temperature and the evaporator temperature.

5. The method according to claim 3, characterized in that: The corresponding replacement difference is determined according to its operation mode, including: If the unit operates in heating mode, after the condenser and the evaporator are operating stably, the first heating replacement difference is determined based on the average temperature difference between the evaporator temperature and the condenser temperature; and the second heating replacement difference is determined based on the average temperature difference between the supply air temperature and the evaporator temperature.

6. The method according to claim 3, characterized in that If the unit operates in the cooling mode, the replacement difference corresponding to the cooling mode includes: a first cooling replacement difference ΔTl1 and a second cooling replacement difference ΔTl2; Replacing the detection value of the failed temperature sensor according to the replacement difference and the detection value of the non-failed temperature sensor includes: If the first temperature sensor is a failed temperature sensor, the detection value of the first temperature sensor is replaced by: evaporator temperature + ΔTl1, or supply air temperature - ΔTl2 + ΔTl1; If the second temperature sensor is a failed temperature sensor, the detection value of the second temperature sensor is replaced by: the surface cooler temperature - ΔTl1, or the supply air temperature - ΔTl2; If the third temperature sensor is a failed temperature sensor, the detection value of the third temperature sensor is replaced by: condenser temperature - ΔTl1 + ΔTl2, or, evaporator temperature + ΔTl2.

7. The method according to claim 3, characterized in that If the unit operates in the heating mode, the replacement difference corresponding to the heating mode includes: a first heating replacement difference ΔTr1 and a second heating replacement difference ΔTr2; Replacing the detection value of the failed temperature sensor according to the replacement difference and the detection value of the non-failed temperature sensor includes: If the first temperature sensor is a failed temperature sensor, the detection value of the first temperature sensor is replaced by: evaporator temperature - ΔTr2, or supply air temperature + ΔTr2 - ΔTr1; If the second temperature sensor is a failed temperature sensor, the detection value of the second temperature sensor is replaced by: the condenser temperature + ΔTr1, or the supply air temperature + ΔTr2; If the third temperature sensor is a failed temperature sensor, the detection value of the third temperature sensor is replaced by: condenser temperature+ΔTr1-ΔTr2, or, evaporator temperature-ΔTr2.

8. The method according to claim 3, characterized in that When at least one of the three temperature sensors fails, replacing the detection value of the failed temperature sensor according to the replacement difference and the detection value of the non-failed temperature sensor includes: When one of the three temperature sensors fails and the other two temperature sensors are not failed, determining a replacement value according to the replacement difference and the detection value of the non-failed temperature sensor; Compare whether the replacement values ​​corresponding to the two intact temperature sensors are the same; If they are the same, the detection value of the failed temperature sensor is directly replaced; If they are not the same, the two replacement values ​​are averaged to replace the detection value of the failed temperature sensor.

9. An air conditioning unit, characterized in that: The air conditioning unit includes the unit temperature control device according to claim 1 or 2.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 3 to 8 is implemented.

11. An electronic device, characterized in that: include: one or more processors; A storage device for storing one or more programs, which, when executed by the one or more processors, enables the one or more processors to implement the method as claimed in any one of claims 3 to 8.

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