Detection method and air conditioner

Abstract

The invention provides a detection method and an air conditioner. The detection method comprises the steps that equipment to be detected is shut down for a period of time; acquiring data of a temperature detection module and a pressure detection module of the to-be-detected equipment; acquiring a corresponding relation between the data of the temperature detection module and the data of the pressure detection module of the to-be-detected equipment; the difference value between the pressure of the high-pressure side and the pressure of the low-pressure side of the to-be-detected equipment detected by the pressure detection module is calculated, and whether the pressure detection module is abnormal or not is judged according to the difference value between the pressure of the high-pressure side and the pressure of the low-pressure side; if the pressure detection module is abnormal, detecting whether the temperature detection module is abnormal or not, and finding out an abnormal pressure sensor; if the pressure detection module is normal, whether the temperature detection module is abnormal or not is detected, if the temperature detection module is abnormal, the to-be-detected equipment is controlled to be shut down, and the problem that the service life of a unit is shortened is solved through the detection method.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to a detection method and an air conditioner. Background Art

[0002] Air conditioners are common electrical appliances in people's daily lives, and temperature sensors and pressure sensors are essential parts of air conditioners. Abnormal temperature sensors and pressure sensors can cause unstable operation of the unit or even damage the unit.

[0003] The existing method for determining whether the temperature sensing package and the pressure sensor are good is usually to detect the temperature sensing package and the pressure sensor one by one. However, such a detection method requires a lot of manpower and is costly.

[0004] Therefore, the prior art needs to be further developed. Summary of the invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and provide a detection method and an air conditioner to solve the problem in the related art that when the temperature sensing package and pressure data are inaccurate, the unit will run for a long time, thereby shortening the service life of the unit.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: a detection method is provided, comprising:

[0007] The equipment to be tested is shut down for a period of time;

[0008] Obtain data from the temperature detection module and the pressure detection module of the device to be detected;

[0009] Acquire the corresponding relationship between the data of the temperature detection module and the data of the pressure detection module of the device to be detected;

[0010] Calculating the difference between the pressure on the high-pressure side and the pressure on the low-pressure side of the device to be detected detected by the pressure detection module, and judging whether the pressure detection module is abnormal according to the difference between the pressure on the high-pressure side and the pressure on the low-pressure side;

[0011] If the pressure detection module is abnormal, detect whether the temperature detection module is abnormal, and find out the abnormal pressure sensor;

[0012] If the pressure detection module is normal, then detect whether the temperature detection module is abnormal;

[0013] If the temperature detection module is abnormal, the device to be detected is controlled to shut down.

[0014] Furthermore, the method for obtaining the corresponding relationship between the data of the temperature detection module and the data of the pressure detection module of the device to be detected includes:

[0015] Obtaining a saturation pressure corresponding to the saturation temperature detected by the temperature detection module according to the type of refrigerant; and / or,

[0016] A saturation temperature corresponding to the saturation pressure detected by the pressure detection module is obtained according to the type of refrigerant.

[0017] Further, the method for judging whether the pressure detection module is abnormal according to the difference between the pressure on the high-pressure side and the pressure on the low-pressure side includes:

[0018] If the difference between the pressure on the high-pressure side and the pressure on the low-pressure side detected by the pressure detection module is greater than a threshold, it is determined that the pressure detection module is abnormal;

[0019] If the difference between the pressure on the high-pressure side and the pressure on the low-pressure side detected by the pressure detection module is less than or equal to the threshold, it is determined that the pressure detection module has no abnormality.

[0020] Furthermore, the pressure detection module includes:

[0021] A low-pressure sensor, used to detect the pressure on the low-pressure side of the device to be detected;

[0022] The high-pressure sensor is used to detect the pressure on the high-pressure side of the device to be detected.

[0023] Furthermore, the temperature detection module includes:

[0024] Indoor pipe temperature sensing package, used to detect the temperature of the indoor heat exchanger;

[0025] The inner ring temperature sensing package is used to detect the temperature of the indoor environment;

[0026] The outer ring temperature sensing package is used to detect the temperature of the outdoor environment;

[0027] Suction temperature sensing package, used to detect the temperature of the suction pipe of the compressor;

[0028] The exhaust temperature sensing package is used to detect the temperature of the compressor's exhaust pipe.

[0029] Further, if the pressure detection module is abnormal, detecting whether the temperature detection module is abnormal, and finding the abnormal pressure sensor includes:

[0030] Determine whether the outer ring temperature sensing package, the air intake temperature sensing package and the air exhaust temperature sensing package are abnormal;

[0031] Using the judgment results of the outer ring temperature sensing package, the air intake temperature sensing package, and the air discharge temperature sensing package, it is judged whether the high pressure sensor and the low pressure sensor are abnormal;

[0032] Determine whether the indoor pipe temperature sensor and the inner ring temperature sensor are abnormal.

[0033] Further, the method for determining whether the outer ring temperature sensor, the suction temperature sensor, and the exhaust temperature sensor are abnormal includes:

[0034] Record the temperature value T_exhaust detected by the exhaust temperature sensor, the temperature value T_suction detected by the suction temperature sensor, and the temperature value T_outer detected by the outer ring temperature sensor; set a threshold X;

[0035] Determine whether |T_exhaust - T_suction| ≤ X °C, |T_outer - T_suction| ≤ X °C, and |T_outer - T_exhaust| ≤ X °C are satisfied; if so, the outer ring temperature sensor, the suction temperature sensor, and the exhaust temperature sensor are all normal;

[0036] Otherwise, determine whether |T_exhaust - T_suction| ≤ X °C and |T_outer - T_suction| ≤ X °C are satisfied; if so, the suction temperature sensor is normal; determine whether |T_exhaust - T_suction| ≤ |T_outer - T_suction| is satisfied; if so, the outer ring temperature sensor is abnormal and the exhaust temperature sensor is normal; otherwise, determine that the outer ring temperature sensor is normal and the exhaust temperature sensor is abnormal;

[0037] If |T_exhaust - T_suction| ≤ |T_outer - T_suction| is not satisfied, determine whether |T_suction - T_exhaust| ≤ X °C and |T_outer - T_exhaust| ≤ X °C are satisfied; if so, the exhaust temperature sensor is normal, and determine whether |T_suction - T_exhaust| ≤ |T_outer - T_exhaust| is satisfied; if so, the outer ring temperature sensor is abnormal and the suction temperature sensor is normal; if not, the outer ring temperature sensor is normal and the suction temperature sensor is abnormal;

[0038] If |T_suction - T_exhaust| ≤ X °C and |T_outer - T_exhaust| ≤ X °C are not satisfied, determine whether |T_exhaust - T_outer| ≤ X °C and |T_suction - T_outer| ≤ X °C are satisfied; if so, the outer ring temperature sensor is normal, and determine whether |T_exhaust - T_outer| ≤ |T_suction - T_outer| is satisfied; if so, the suction temperature sensor is abnormal and the exhaust temperature sensor is normal; if not, the suction temperature sensor is normal and the exhaust temperature sensor is abnormal;

[0039] If |T_exhaust - T_outer| ≤ X °C and |T_suction - T_outer| ≤ X °C are not satisfied, determine whether |T_exhaust - T_suction| ≤ X °C is satisfied; if so, the outer ring temperature sensor is abnormal and the suction temperature sensor and the exhaust temperature sensor are both normal;

[0040] If |T_exhaust - T_suction| ≤ X °C is not satisfied, determine whether |T_outer - T_exhaust| ≤ X °C is satisfied; if so, the suction temperature sensor is abnormal and the outer ring temperature sensor and the exhaust temperature sensor are both normal;

[0041] If |Texternal-Texhaust|≤X℃ is not satisfied, determine whether |Texternal-Tsuction|≤X℃ is satisfied; if so, the exhaust temperature sensing package is abnormal, the suction temperature sensing package and the exhaust temperature sensing package are both normal;

[0042] If |Texternal-Tsuction|≤X°C is not satisfied, the outer ring temperature sensing package, the intake temperature sensing package and the exhaust temperature sensing package are all abnormal.

[0043] Further, the method of using the outer ring temperature sensing package, the air intake temperature sensing package, and the exhaust temperature sensing package to determine whether the high pressure sensor and the low pressure sensor are abnormal includes:

[0044] Determine whether the air intake temperature sensing package and the air exhaust temperature sensing package are both normal; if so, determine whether |P low - P intake | ≤ threshold value is satisfied; if so, the low pressure sensor is normal and the high pressure sensor is abnormal; if not, the low pressure sensor is abnormal; determine whether |P high - P exhaust | ≤ threshold value is satisfied; if so, the high pressure sensor is normal;

[0045] If the condition that both the air intake temperature sensing package and the exhaust temperature sensing package are normal is not satisfied, determine whether both the exhaust temperature sensing package and the outer ring temperature sensing package are normal; if so, determine whether |P high - P exhaust |≤ threshold is satisfied; if so, the high pressure sensor is normal and the low pressure sensor is abnormal; if not, the high pressure sensor is abnormal, and determine whether |P low - P exhaust |≤ threshold is satisfied; if so, the low pressure sensor is normal; if not, the low pressure sensor is abnormal;

[0046] If the exhaust temperature sensing package and the outer ring temperature sensing package are not both normal, then determine whether the intake temperature sensing package and the outer ring temperature sensing package are both normal; if so, determine whether |P low - P suction | ≤ threshold value is satisfied; if so, the low pressure sensor is normal and the high pressure sensor is abnormal; if not, the low pressure sensor is abnormal, and determine whether |P high - P suction | ≤ threshold value is satisfied; if so, the high pressure sensor is normal; if not, the high pressure sensor is abnormal;

[0047] If the air intake temperature sensing package and the outer ring temperature sensing package are not both normal, then both the high pressure sensor and the low pressure sensor are abnormal.

[0048] Further, the method for judging whether the indoor pipe temperature sensing package and the inner ring temperature sensing package are abnormal includes:

[0049] Determine whether the outer ring temperature sensing package, the air intake temperature sensing package, the air discharge temperature sensing package, the high pressure sensor and the low pressure sensor are all abnormal; if so, determine whether |Tinner tube-Tinner ring|≤X℃; if so, the indoor pipe temperature sensing package and the inner ring temperature sensing package are normal; otherwise, the indoor pipe temperature sensing package and the inner ring temperature sensing package are abnormal;

[0050] If the outer ring temperature sensing package, the air intake temperature sensing package, the exhaust temperature sensing package, the high pressure sensor and the low pressure sensor are all abnormal, the detection data without abnormality is selected from the outer ring temperature sensing package, the air intake temperature sensing package, the exhaust temperature sensing package, the low pressure sensor and the high pressure sensor, and the average value of the detection data without abnormality is taken, which is recorded as T1;

[0051] Determine whether |Tinner tube-T1|≤X°C is satisfied; if not, the indoor tube temperature sensing package is abnormal; if yes, the indoor tube temperature sensing package is abnormal;

[0052] Determine whether |Tinner ring-T1|≤X°C is satisfied; if not, the inner ring temperature sensing package is abnormal; if so, the inner ring temperature sensing package is abnormal.

[0053] Further, if the pressure detection module is not abnormal, the method for detecting whether the temperature detection module is abnormal includes:

[0054] Detect whether the air intake temperature sensing package, the exhaust temperature sensing package and the outer ring temperature sensing package are abnormal;

[0055] Whether the indoor pipe temperature sensing package and the inner ring temperature sensing package are abnormal is determined based on whether the air intake temperature sensing package, the exhaust temperature sensing package and the outer ring temperature sensing package are abnormal.

[0056] Furthermore, the method for detecting whether the air intake temperature sensing package, the air exhaust temperature sensing package and the outer ring temperature sensing package are abnormal includes:

[0057] Determine whether |T low - T suction | ≤ X ° C is satisfied; if not, the suction temperature sensing package is abnormal; if so, the suction temperature sensing package is normal;

[0058] Determine whether |Thigh-Texhaust|≤X°C is satisfied; if not, the exhaust temperature sensing package is abnormal; if so, the exhaust temperature sensing package is normal;

[0059] Determine whether |Tlow-Tout|≤X℃ and |Thigh-Tout|≤X℃ are satisfied; if not, the outer ring temperature sensing package is abnormal; if so, the outer ring temperature sensing package is normal.

[0060] Further, according to whether the air intake temperature sensing package, the exhaust temperature sensing package and the outer ring temperature sensing package are abnormal, the method for judging whether the indoor pipe temperature sensing package and the inner ring temperature sensing package are abnormal includes:

[0061] Determine whether the outer ring temperature sensing package, the air intake temperature sensing package, the air discharge temperature sensing package, the high pressure sensor and the low pressure sensor are all abnormal; if so, determine whether |Tinner tube-Tinner ring|≤X℃; if so, the indoor pipe temperature sensing package and the inner ring temperature sensing package are normal; otherwise, the indoor pipe temperature sensing package and the inner ring temperature sensing package are abnormal;

[0062] If the outer ring temperature sensing package, the air intake temperature sensing package, the exhaust temperature sensing package, the high pressure sensor and the low pressure sensor are all abnormal, the detection data without abnormality is selected from the outer ring temperature sensing package, the air intake temperature sensing package, the exhaust temperature sensing package, the low pressure sensor and the high pressure sensor, and the average value of the detection data without abnormality is taken, which is recorded as T1;

[0063] Determine whether |Tinner tube-T1|≤X°C is satisfied; if not, the indoor tube temperature sensing package is abnormal; if yes, the indoor tube temperature sensing package is abnormal;

[0064] Determine whether |Tinner ring-T1|≤X°C is satisfied; if not, the inner ring temperature sensing package is abnormal; if so, the inner ring temperature sensing package is abnormal.

[0065] An air conditioner is applicable to the above detection method.

[0066] Furthermore, the air conditioner comprises:

[0067] A compressor, wherein an intake temperature sensing package and a low pressure sensor are arranged on the intake pipe of the compressor; an exhaust temperature sensing package and a high pressure sensor are arranged on the exhaust pipe of the compressor;

[0068] An evaporator is connected to the suction pipe of the compressor, and is provided with an indoor pipe temperature sensing package and an inner ring temperature sensing package;

[0069] A condenser is connected to the exhaust pipe of the compressor, and the outer ring temperature sensing package is arranged on the condenser.

[0070] Beneficial effects:

[0071] The detection method of the present invention comprises: stopping the equipment to be detected for a period of time; obtaining data from the temperature detection module and the pressure detection module of the equipment to be detected; obtaining the corresponding relationship between the data of the temperature detection module and the data of the pressure detection module of the equipment to be detected; calculating the difference between the pressure on the high-pressure side and the pressure on the low-pressure side of the equipment to be detected detected by the pressure detection module, and judging whether the pressure detection module is abnormal according to the difference between the pressure on the high-pressure side and the pressure on the low-pressure side; if the pressure detection module is abnormal, detecting whether the temperature detection module is abnormal, and finding the abnormal pressure sensor; if the pressure detection module is normal, detecting whether the temperature detection module is abnormal. The detection method of the present invention solves the problem that the service life of the unit is shortened due to long-term operation of the unit when the temperature sensing package and pressure data are inaccurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] Figure 1 is a flow chart of an embodiment of a detection method adopted in an embodiment of the present invention;

[0073] Figure 2 is a flow chart of another embodiment of the detection method adopted in the embodiment of the present invention;

[0074] Figure 3 is a schematic diagram of a control flow of a first external unit determination module of an air conditioner used in an embodiment of the present invention;

[0075] Figure 4 is a schematic diagram of a control flow of a second external unit determination module of an air conditioner used in an embodiment of the present invention;

[0076] Figure 5 is a schematic diagram of a control flow of a third external unit determination module of an air conditioner used in an embodiment of the present invention;

[0077] Figure 6 1 is a schematic diagram of a control flow of an indoor unit determination module of an air conditioner used in an embodiment of the present invention;

[0078] Figure 7 It is a schematic diagram of the structure of an air conditioner used in an embodiment of the present invention.

[0079] The above drawings include the following reference numerals:

[0080] 1. Low pressure sensor; 2. High pressure sensor; 3. Indoor pipe temperature sensor; 4. Inner ring temperature sensor; 5. Outer ring temperature sensor; 6. Intake temperature sensor; 7. Exhaust temperature sensor;

[0081] 10. Compressor; 101. Intake pipe; 102. Exhaust pipe; 20. Evaporator; 30. Condenser. DETAILED DESCRIPTION

[0082] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0083] See also Figures 1 to 7 According to an embodiment of the present invention, a detection method is provided, including: shutting down the device to be detected for a period of time; obtaining data from the temperature detection module and the pressure detection module of the device to be detected; obtaining the corresponding relationship between the data of the temperature detection module and the data of the pressure detection module of the device to be detected; calculating the difference between the pressure on the high-pressure side and the pressure on the low-pressure side of the device to be detected detected by the pressure detection module, and judging whether the pressure detection module is abnormal according to the difference between the pressure on the high-pressure side and the pressure on the low-pressure side; if the pressure detection module is abnormal, detecting whether the temperature detection module is abnormal, and finding the abnormal pressure sensor; if the pressure detection module is normal, detecting whether the temperature detection module is abnormal; if the temperature detection module is abnormal, controlling the device to be detected to shut down.

[0084] By adopting the above setting, the temperature sensing package and the pressure sensor are judged whether there are any abnormalities through their own states, thereby improving the accuracy of temperature and pressure data, judging the problems of the temperature sensing package and the pressure sensor in advance, and solving the problem of long-term operation of the unit when the temperature sensing package and pressure data are inaccurate, thereby shortening the service life of the unit.

[0085] In the detection method of this embodiment, see Figure 2 The method for obtaining the correspondence between the data of the temperature detection module of the device to be detected and the data of the pressure detection module includes: obtaining the saturated pressure corresponding to the saturated temperature detected by the temperature detection module according to the type of refrigerant; and / or obtaining the saturated temperature corresponding to the saturated pressure detected by the pressure detection module according to the type of refrigerant.

[0086] Specifically, according to the principles of thermodynamics, if there is a stable gas-liquid mixture in a closed container, the state is a saturated state; in the saturated state, there is a corresponding relationship between the saturated gas pressure and the saturated temperature, and this relationship can be expressed by the refrigerant pressure-saturated temperature comparison table. After the unit has been shut down for a long time, there must be a saturated refrigerant, so the relationship between the temperature sensing package and the pressure sensor can be connected through the refrigerant pressure-saturated temperature comparison table. In this way, the relationship between pressure and temperature is established, and then the temperature detection module and the pressure detection module are detected.

[0087] See also Figure 2 In the detection method of this embodiment, the method for judging whether the pressure detection module is abnormal according to the difference between the pressure on the high-pressure side and the pressure on the low-pressure side includes: if the difference between the pressure on the high-pressure side and the pressure on the low-pressure side detected by the pressure detection module is greater than a threshold value, then it is judged that the pressure detection module is abnormal; if the difference between the pressure on the high-pressure side and the pressure on the low-pressure side detected by the pressure detection module is less than or equal to the threshold value, then it is judged that the pressure detection module is not abnormal.

[0088] Specifically, under normal conditions, when the system is shut down for a long time, the pressure parameters of the low-pressure side and the high-pressure side of the system should be close, so when the two parameters are close, they are considered normal. In this way, it is easy to determine whether the pressure detection module is abnormal.

[0089] In the detection method of this embodiment, see Figure 7 The pressure detection module includes: a low pressure sensor 1 for detecting the pressure on the low pressure side of the device to be detected; and a high pressure sensor 2 for detecting the pressure on the high pressure side of the device to be detected. In this way, the representative pressure index of the system can be effectively detected.

[0090] In the detection method of this embodiment, see Figure 7 The temperature detection module includes: an indoor pipe temperature sensing package 3 for detecting the temperature of the indoor heat exchanger; an inner ring temperature sensing package 4 for detecting the temperature of the indoor environment; an outer ring temperature sensing package 5 for detecting the temperature of the outdoor environment; an intake temperature sensing package 6 for detecting the temperature of the intake pipe of the compressor; and an exhaust temperature sensing package 7 for detecting the temperature of the exhaust pipe of the compressor.

[0091] With the above arrangement, sensors are arranged at corresponding positions of the system, so that it can be fully reflected whether the temperature and pressure detection at various positions of the system are normal.

[0092] See also Figure 5 In the detection method of this embodiment, if the pressure detection module is abnormal, the temperature detection module is detected to see if it is abnormal, and the method of finding the abnormal pressure sensor includes:

[0093] Determine whether the outer ring temperature sensing package 5, the intake air temperature sensing package 6 and the exhaust air temperature sensing package 7 are abnormal; use the judgment results of the outer ring temperature sensing package 5, the intake air temperature sensing package 6 and the exhaust air temperature sensing package 7 to determine whether the high pressure sensor 2 and the low pressure sensor 1 are abnormal; determine whether the indoor pipe temperature sensing package 3 and the inner ring temperature sensing package 4 are abnormal.

[0094] By adopting the above arrangement, the temperature sensing packages located indoors and outdoors are detected step by step, which is conducive to accurately detecting the data of the temperature sensing packages.

[0095] In the detection method of this embodiment, refer to Figure 3 , the method for determining whether the outer ring temperature sensor 5, the suction temperature sensor 6, and the exhaust temperature sensor 7 are abnormal includes: recording the temperature value T_exhaust detected by the exhaust temperature sensor 7, the temperature value T_suction detected by the suction temperature sensor 6, and the temperature value T_outer detected by the outer ring temperature sensor 5; setting a threshold value X; determining whether |T_exhaust - T_suction| ≤ X °C, |T_outer - T_suction| ≤ X °C, and |T_outer - T_exhaust| ≤ X °C are satisfied; if so, the outer ring temperature sensor 5, the suction temperature sensor 6, and the exhaust temperature sensor 7 are all normal; otherwise, determining whether |T_exhaust - T_suction| ≤ X °C and |T_outer - T_suction| ≤ X °C are satisfied; if so, the suction temperature sensor 6 is normal; determining whether |T_exhaust - T_suction| ≤ |T_outer - T_suction| is satisfied; if so, the outer ring temperature sensor 5 is abnormal and the exhaust temperature sensor 7 is normal; otherwise, determining that the outer ring temperature sensor 5 is normal and the exhaust temperature sensor 7 is abnormal; if |T_exhaust - T_suction| ≤ |T_outer - T_suction| is not satisfied, determining whether |T_suction - T_exhaust| ≤ X °C and |T_outer - T_exhaust| ≤ X °C are satisfied; if so, the exhaust temperature sensor 7 is normal, and determining whether |T_suction - T_exhaust| ≤ |T_outer - T_exhaust| is satisfied; if so, the outer ring temperature sensor 5 is abnormal and the suction temperature sensor 6 is normal; if not, the outer ring temperature sensor 5 is normal and the suction temperature sensor 6 is abnormal; if |T_suction - T_exhaust| ≤ X °C and |T_outer - T_exhaust| ≤ X °C are not satisfied, determining whether |T_exhaust - T_outer| ≤ X °C and |T_suction - T_outer| ≤ X °C are satisfied; if so, the outer ring temperature sensor 5 is normal, and determining whether |T_exhaust - T_outer| ≤ |T_suction - T_outer| is satisfied; if so, the suction temperature sensor 6 is abnormal and the exhaust temperature sensor 7 is normal; if not, the suction temperature sensor 6 is normal and the exhaust temperature sensor 7 is abnormal; if |T_exhaust - T_outer| ≤ X °C and |T_suction - T_outer| ≤ X °C are not satisfied, determining whether |T_exhaust - T_suction| ≤ X °C is satisfied; if so, the outer ring temperature sensor 5 is abnormal and the suction temperature sensor 6 and the exhaust temperature sensor 7 are both normal; if |T_exhaust - T_suction| ≤ X °C is not satisfied, determining whether |T_outer - T_exhaust| ≤ X °C is satisfied; if so, the suction temperature sensor 6 is abnormal and the outer ring temperature sensor 5 and the exhaust temperature sensor 7 are both normal; if |T_outer - T_exhaust| ≤ X °C is not satisfied, determining whether |T_outer - T_suction| ≤ X °C is satisfied; if so, the exhaust temperature sensor 7 is abnormal and the suction temperature sensor 6 and the exhaust temperature sensor 7 are both normal; if |T_outer - T_suction| ≤ X °C is not satisfied, then the outer ring temperature sensor 5, the suction temperature sensor 6, and the exhaust temperature sensor 7 are all abnormal.

[0096] Specifically, in the case where the air conditioner unit is shut down for a long time, the temperature values collected by the outer ring temperature sensor 5, the suction temperature sensor 6, and the exhaust temperature sensor 7 should be relatively close. Therefore, the control method of this embodiment considers that the difference between any two of them within X °C is normal, and if it exceeds, it is considered that there is an abnormal point.

[0097] Step 1: Preliminarily determine whether all temperature sensing packages are normal. If the three temperature differences are within X℃, it means that the temperature readings of all temperature sensing packages are very close, and they can be considered normal. If yes: the outer ring, air intake, and exhaust temperature sensing packages 7 are all normal, jump to the end. Otherwise: go to step 2.

[0098] Step 2: This step further narrows the scope and determines whether the suction temperature sensing package 6 is normal. If the difference between the exhaust temperature and the suction temperature is within X°C, and the difference between the outer ring temperature and the suction temperature is also within X°C, it means that the suction temperature sensing package 6 is normal.

[0099] There are two cases: first, because the difference between the outer ring temperature and the suction temperature is greater than the difference between the exhaust temperature and the suction temperature, it means that the reading of the outer ring temperature sensor 5 is inaccurate. Second, because the difference between the outer ring temperature and the suction temperature is less than or equal to the difference between the exhaust temperature and the suction temperature, it means that the reading of the exhaust temperature sensor 7 is inaccurate.

[0100] Step 3: Determine whether the exhaust temperature sensing package 7 is normal. If the difference between the suction temperature and the exhaust temperature is within X°C, and the difference between the outer ring temperature and the exhaust temperature is also within X°C, it means that the exhaust temperature sensing package 7 is normal.

[0101] Step 4: Determine whether the outer ring temperature sensing package 5 is normal. If the difference between the exhaust temperature and the outer ring temperature is within X°C, and the difference between the intake temperature and the outer ring temperature is also within X°C, it means that the outer ring temperature sensing package 5 is normal.

[0102] Step 5: Determine whether the outer ring temperature sensing package 5 is abnormal. If the difference between the exhaust temperature and the intake temperature is within X°C, it means that the outer ring temperature sensing package 5 is abnormal.

[0103] Step 6: Determine whether the air intake temperature sensing package 6 is abnormal. If the difference between the outer ring temperature and the exhaust temperature is within X°C, it means that the air intake temperature sensing package 6 is abnormal.

[0104] Step 7: Determine whether the exhaust temperature sensing package 7 is abnormal. If the difference between the outer ring temperature and the suction temperature is within X°C, it means that the exhaust temperature sensing package 7 is abnormal.

[0105] In the detection method of the present embodiment, the method of using the outer ring temperature sensing package 5, the intake temperature sensing package 6, and the exhaust temperature sensing package 7 to determine whether the high-pressure sensor 2 and the low-pressure sensor 1 are abnormal includes: determining whether the intake temperature sensing package 6 and the exhaust temperature sensing package 7 are both normal; if so, determining whether |P low - P intake | ≤ threshold value is satisfied; if so, the low-pressure sensor 1 is normal and the high-pressure sensor 2 is abnormal; if not, the low-pressure sensor 1 is abnormal; determining whether |P high - P exhaust | ≤ threshold value is satisfied; if so, the high-pressure sensor 2 is normal; if not, the intake temperature sensing package 6 and the exhaust temperature sensing package 7 are both normal, determining whether the exhaust temperature sensing package 7 and the outer ring temperature sensing package 5 are both normal; if so, determining whether |P high - P exhaust | ≤ threshold value is satisfied; if so, the high-pressure sensor 2 is normal, the The low pressure sensor 1 is abnormal; if not, the high pressure sensor 2 is abnormal, and it is determined whether |P low - P exhaust |≤ threshold value is met; if so, the low pressure sensor 1 is normal; if not, the low pressure sensor 1 is abnormal; if it is not satisfied that the exhaust temperature sensing package 7 and the outer ring temperature sensing package 5 are both normal, then it is determined whether the intake temperature sensing package 6 and the outer ring temperature sensing package 5 are both normal; if so, it is determined whether |P low - P suction |≤ threshold value is met; if so, the low pressure sensor 1 is normal and the high pressure sensor 2 is abnormal; if not, the low pressure sensor 1 is abnormal, and it is determined whether |P high - P suction |≤ threshold value is met; if so, the high pressure sensor 2 is normal; if not, the high pressure sensor 2 is abnormal; if it is not satisfied that the intake temperature sensing package 6 and the outer ring temperature sensing package 5 are both normal, then the high pressure sensor 2 and the low pressure sensor 1 are both abnormal.

[0106] In the detection method of this embodiment, see Figure 6 , the method for judging whether the indoor pipe temperature sensing package 3 and the inner ring temperature sensing package 4 are abnormal includes: judging whether the outer ring temperature sensing package 5, the air intake temperature sensing package 6, the exhaust temperature sensing package 7, the high pressure sensor 2 and the low pressure sensor 1 are all abnormal; if so, judging whether |Tinner pipe-Tinner ring|≤X℃; if so, the indoor pipe temperature sensing package 3 and the inner ring temperature sensing package 4 are normal; otherwise, the indoor pipe temperature sensing package 3 and the inner ring temperature sensing package 4 are abnormal; if the outer ring temperature sensing package 5, the air intake temperature sensing package 6, the exhaust temperature sensing package 7, the high pressure sensor 2 and the low pressure sensor 1 are not satisfied, The high-pressure sensor 2 and the low-pressure sensor 1 are both abnormal. Among the outer ring temperature-sensing package 5, the intake temperature-sensing package 6, the exhaust temperature-sensing package 7, the low-pressure sensor 1 and the high-pressure sensor 2, select the detection data without abnormalities, take the average value of the detection data without abnormalities, and record it as T1; judge whether |Tinner tube-T1|≤X℃; if not, the indoor tube temperature-sensing package 3 is abnormal; if so, the indoor tube temperature-sensing package is abnormal; judge whether |Tinner ring-T1|≤X℃; if not, the inner ring temperature-sensing package 4 is abnormal; if so, the inner ring temperature-sensing package 4 is abnormal.

[0107] Specifically, according to the above method, the quality of the outer ring temperature sensing package 5, the intake temperature sensing package 6 and the exhaust temperature sensing package 7 should have been determined.

[0108] In addition, when the air conditioner is shut down for a long time, the pressure and temperature in the system will reach a balanced state, so that the pressure measured by the low pressure sensor 1 and the high pressure sensor will tend to be consistent and close to the ambient pressure. The temperatures measured by the suction temperature sensor 6, the exhaust temperature sensor 7 and the outer ring temperature sensor 5 will also tend to be consistent and close to the ambient temperature; the refrigerant pressure-saturation temperature comparison table is used to link the ambient pressure and ambient temperature;

[0109] Step 1: Check whether the suction temperature sensor 6 and the exhaust temperature sensor 7 are normal; if normal, judge that |P low - P suction | ≤ threshold value, and the parameters of the low pressure sensor 1 and the suction temperature sensor 6 should be close; because Figure 3 The method in the above has shown that the suction temperature sensing package 6 is good. When it is not close, it is considered that the low pressure sensor 1 is abnormal.

[0110] High pressure sensor 2 is abnormal (because Figure 2 There is a judgment whether |P low - P high| ≤ threshold, so one is normal and the other is abnormal by default);

[0111] |Phigh-Pexhaust|≤Threshold: The parameters of high pressure sensor 2 and exhaust pressure should be close; because Figure 3 It has been explained that the exhaust temperature sensing bulb 7 is good. When it is not close, it is considered that the high pressure sensor 2 is abnormal.

[0112] See also Figures 1 to 6 In the detection method of this embodiment, if the pressure detection module does not have an abnormality, the method for detecting whether the temperature detection module is abnormal includes: detecting whether the air intake temperature sensing bag 6, the exhaust temperature sensing bag 7 and the outer ring temperature sensing bag 5 are abnormal; judging whether the indoor pipe temperature sensing bag 3 and the inner ring temperature sensing bag 4 are abnormal based on whether the air intake temperature sensing bag 6, the exhaust temperature sensing bag 7 and the outer ring temperature sensing bag are abnormal.

[0113] By adopting the above arrangement, the temperature sensing packages located indoors and outdoors are detected step by step, which is easy to operate and is conducive to accurately detecting the data of the temperature sensing packages.

[0114] See also Figure 5, in the detection method of this embodiment, the method for detecting whether the suction temperature sensor 6, the exhaust temperature sensor 7, and the outer ring temperature sensor 5 are abnormal includes: determining whether |T low - T suction| ≤ X °C is satisfied; if not, then the suction temperature sensor 6 is abnormal, and if so, then the suction temperature sensor 6 is normal; determining whether |T high - T exhaust| ≤ X °C is satisfied; if not, then the exhaust temperature sensor 7 is abnormal, and if so, then the exhaust temperature sensor 7 is normal; determining whether |T low - T outer| ≤ X °C and |T high - T outer| ≤ X °C are satisfied; if not, then the outer ring temperature sensor 5 is abnormal, and if so, then the outer ring temperature sensor 5 is normal.

[0115] Specifically, Figure 5 The method shown enters when it is considered that both high and low pressure sensors 1 are normal. That is, T low and T high are considered accurate values, and T suction, T exhaust, and T outer are values to be judged.

[0116] First step: By comparing the temperature of the suction temperature sensor 6 with the saturation temperature corresponding to the low pressure sensor 1, determine whether the suction temperature sensor 6 is normal. The suction temperature sensor 6 (T suction) and the low pressure sensor 1 (P low) are usually installed near the evaporator to monitor the temperature and pressure at the outlet of the evaporator.

[0117] Second step: By comparing the temperature of the exhaust temperature sensor 7 with the saturation temperature corresponding to the high pressure sensor, determine whether the exhaust temperature sensor 7 is normal.

[0118] The exhaust temperature sensor 7 (T exhaust) and the high pressure sensor (P high) are usually installed near the condenser to monitor the temperature and pressure at the outlet of the condenser.

[0119] Third step: By comparing the temperature of the outer ring temperature sensor 5 with the saturation temperatures corresponding to the low pressure sensor and the high pressure sensor, determine whether the outer ring temperature sensor 5 is normal. The outer ring temperature sensor 5 (T outer) is used to monitor the outdoor ambient temperature. Under normal circumstances, the reading of the outer ring temperature sensor 5 should be close to the saturation temperatures corresponding to the low pressure sensor 1 and the high pressure sensor.

[0120] In the detection method of this embodiment, refer to Figure 6, according to whether the air intake temperature sensing package 6, the exhaust temperature sensing package 7 and the outer ring temperature sensing package are abnormal, the method for judging whether the indoor pipe temperature sensing package 3 and the inner ring temperature sensing package 4 are abnormal includes: judging whether the outer ring temperature sensing package 5, the air intake temperature sensing package 6, the exhaust temperature sensing package 7, the high pressure sensor 2 and the low pressure sensor 1 are all abnormal; if so, judging whether |Tinner pipe-Tinner ring|≤X℃; if so, the indoor pipe temperature sensing package 3 and the inner ring temperature sensing package 4 are normal; otherwise, the indoor pipe temperature sensing package 3 and the inner ring temperature sensing package 4 are abnormal; if the outer ring temperature sensing package 5, the air intake temperature sensing package 6, the exhaust temperature sensing package 7, the high pressure sensor 2 and the low pressure sensor 1 are all abnormal ... abnormal; if the outer ring temperature sensing package 5, the air intake temperature sensing package 6, the exhaust temperature sensing package 7, the high pressure sensor 2 and the low pressure sensor 1 are all abnormal, the indoor pipe temperature sensing package 3 and the inner ring temperature sensing package 4 are abnormal, the indoor pipe temperature sensing package 3 and the inner ring temperature sensing package 4 are abnormal, the indoor pipe temperature sensing package 3 and the inner ring temperature sensing package 4 are abnormal, the indoor pipe temperature sensing package 3 and the inner ring temperature sensing package 4 are abnormal, the indoor pipe temperature sensing package 3 and the inner ring temperature sensing package 4 are abnormal, the indoor pipe temperature sensing package 3 and the inner ring temperature sensing package 4 are abnormal, the indoor pipe temperature sensing package 3 and the inner ring temperature sensing package 4 are abnormal, the indoor pipe temperature sensing package 3 and the The temperature sensing package 6, the exhaust temperature sensing package 7, the high-pressure sensor 2 and the low-pressure sensor 1 are all abnormal. Among the outer ring temperature sensing package 5, the intake temperature sensing package 6, the exhaust temperature sensing package 7, the low-pressure sensor 1 and the high-pressure sensor 2, select the detection data without abnormalities, take the average value of the detection data without abnormalities, and record it as T1; judge whether |Tinner tube-T1|≤X℃; if not, the indoor tube temperature sensing package 3 is abnormal; if yes, the indoor tube temperature sensing package is abnormal; judge whether |Tinner ring-T1|≤X℃; if no, the inner ring temperature sensing package 4 is abnormal; if yes, the inner ring temperature sensing package 4 is abnormal.

[0121] Figure 6 The method in the method has determined the good or bad conditions of the outer ring temperature sensing package 5, the intake temperature sensing package 6, the exhaust temperature sensing package 7 and the high and low pressure sensor 1: In addition, under long-term shutdown, the temperatures of the indoor pipe temperature sensing package 3 and the inner ring temperature sensing package 4 will also tend to be consistent and close to the ambient temperature.

[0122] Step 1: First check whether the outer ring temperature sensor 5, the air intake temperature sensor 6, the exhaust temperature sensor 7 and the high and low pressure sensor 1 are all abnormal. If all abnormalities are normal, the indoor pipe temperature sensor 3 and the inner ring temperature sensor 4 are compared. If the difference is large, both are considered abnormal (other temperature sensors and sensors are abnormal, so if one of them is broken, both are considered broken.)

[0123] Step 2: Select normal values ​​from the outer ring temperature sensing package 5, the air intake temperature sensing package 6, the exhaust temperature sensing package 7 and the high and low pressure sensors 1, and calculate the average value T1; then compare it with the other two.

[0124] Because T1 is an accurate value, Tinner tube and Tinner ring are values ​​to be judged; in this way, the indoor tube temperature sensing package 3 and the inner ring temperature sensing package 4 can be judged respectively.

[0125] Compare the difference between the temperature of the indoor pipe temperature sensing package 3 (Tinner pipe) and the reference temperature T1 to determine whether the indoor pipe temperature sensing package 3 is normal.

[0126] Step 3: Compare the difference between the temperature of the inner ring temperature sensing package 4 (Tinner ring) and the reference temperature T1 to determine whether the inner ring temperature sensing package 4 is normal.

[0127] The air conditioner of this embodiment is suitable for the above detection method. In this way, the problem of compressor abnormality due to abnormal temperature sensor package is avoided; the problem of false high and low pressure faults due to abnormal pressure sensor is solved; and the problem of shortening the service life of the unit due to long-term operation of the unit when the temperature sensor package and pressure data are inaccurate is solved.

[0128] See also Figure 7 In the air conditioner of this embodiment, the air conditioner includes: a compressor 10, an intake temperature sensing package 6 and a low pressure sensor 1 are provided on the intake pipe 101 of the compressor 10; an exhaust temperature sensing package 7 and a high pressure sensor 2 are provided on the exhaust pipe 102 of the compressor 10; an evaporator 20, connected to the intake pipe 101 of the compressor 10, and an indoor pipe temperature sensing package 3 and an inner ring temperature sensing package 4 are provided on the evaporator 20; a condenser 30, connected to the exhaust pipe 102 of the compressor 10, and the outer ring temperature sensing package 5 is provided on the condenser 30.

[0129] The detection method of this embodiment is described as follows:

[0130] The quality of the temperature sensor and pressure sensor can be judged based on their own data. This method can judge the quality of the temperature sensor and pressure sensor, prevent the subsequent units from being misjudged or even damaged due to inaccurate temperature sensor and pressure sensor, and improve the intelligence of the air conditioner.

[0131] According to the principles of thermodynamics, if there is a stable gas-liquid mixture in a closed container, the state is a saturated state; in the saturated state, there is a corresponding relationship between the saturated gas pressure and the saturated temperature, and this relationship can be expressed by the refrigerant pressure-saturated temperature comparison table. After the unit has been shut down for a long time, there must be saturated refrigerant, so the relationship between the temperature sensing package and the pressure sensor can be connected through the refrigerant pressure-saturated temperature comparison table.

[0132] Figure 1 , Figure 2 , is a flow chart of the main idea of ​​the control method of this embodiment;

[0133] The first step is to determine whether each temperature sensor and pressure sensor is normal when the unit is shut down for more than 6 hours; otherwise, the process ends.

[0134] The second step is to obtain the data of the indoor pipe temperature sensing package 3, the inner ring temperature sensing package 4, the outer ring temperature sensing package 5, the suction temperature sensing package 6, the exhaust temperature sensing package 7, the low pressure sensor 1, and the high pressure sensor 2, which are recorded as Tinner pipe, Tinner ring, Touter, Tsuction, Texhaust, Plow, and Phigh respectively; then, according to the refrigerant type and the refrigerant pressure-saturation temperature comparison table, obtain the corresponding data of Tinner pipe, Tinner ring, Touter, Tsuction, Texhaust, Plow, and Phigh, which are recorded as Pinner pipe, Pinner ring, Pouter, Psuction, Pexhaust, Tlow, and Thigh respectively.

[0135] The third step is to determine whether |P low - P high | ≤ threshold is satisfied. If so, the high and low pressure sensors 1 are normal, and then the first external unit judgment module is entered in sequence; otherwise, the second external unit judgment module and the third external unit judgment module are entered in sequence.

[0136] Step 4: Enter the internal unit judgment module and finish.

[0137] Figure 3 This is the flow chart of the idea of ​​the first external unit judgment module of the patent; when the |P low - P high | ≤ threshold is not met, the first external unit judgment module will be entered; the purpose of the first external unit judgment module is to judge the good or bad conditions of the outer ring temperature sensing package 5, the intake temperature sensing package 6, and the exhaust temperature sensing package 7 when the high and low pressure sensors 1 are abnormal.

[0138] The first step is to determine whether |T exhaust - T suction |≤2℃ and |T external - T suction |≤2℃ and |T external - T exhaust |≤2℃. If so, the outer ring, suction, and exhaust temperature sensing package 7 are all normal, and jump to the end; otherwise, enter the second step;

[0139] The second step is to determine whether |Tdischarge-Tsuction|≤2℃ and |Tex-Tsuction|≤2℃ are satisfied. If so, the suction temperature sensor 6 is normal, and determine whether |Tdischarge-Tsuction|≤|Tex-Tsuction| is satisfied; if so, the outer ring temperature sensor 5 is abnormal, the exhaust temperature sensor 7 is normal, and jump to the end; if not, the outer ring temperature sensor 5 is normal, the exhaust temperature sensor 7 is abnormal, and jump to the end; if not, enter the third step;

[0140] The third step is to determine whether |Tsuction-Texhaust|≤2℃ and |Texhaust-Texhaust|≤2℃ are satisfied; if so, the exhaust temperature sensing bag 7 is normal, and determine whether |Tsuction-Texhaust|≤|Texhaust-Texhaust| is satisfied; if so, the outer ring temperature sensing bag 5 is abnormal, the suction temperature sensing bag 6 is normal, and jump to the end; if not, the outer ring temperature sensing bag 5 is normal, the suction temperature sensing bag 6 is abnormal, and jump to the end; if not, enter the fourth step;

[0141] Step 4: Determine whether |T discharge - T outside| ≤ 2°C and |T suction - T outside| ≤ 2°C are satisfied; if so, the outer ring temperature sensor 5 is normal. Then determine whether |T discharge - T outside| ≤ |T suction - T outside| is satisfied; if so, the suction temperature sensor 6 is abnormal and the discharge temperature sensor 7 is normal, and jump to the end; if not, the suction temperature sensor 6 is normal and the discharge temperature sensor 7 is abnormal, and jump to the end; if not, proceed to Step 5;

[0142] Step 5: Determine whether |T discharge - T suction| ≤ 2°C is satisfied; if so, the outer ring temperature sensor 5 is abnormal, and the suction and discharge temperature sensors 7 are both normal, and jump to the end; if not, proceed to Step 6;

[0143] Step 6: Determine whether |T outside - T discharge| ≤ 2°C is satisfied; if so, the suction temperature sensor 6 is abnormal, and the outer ring and discharge temperature sensors 7 are both normal, and jump to the end; if not, proceed to Step 7;

[0144] Step 7: Determine whether |T outside - T suction| ≤ 2°C is satisfied; if so, the discharge temperature sensor 7 is abnormal, and the suction and discharge temperature sensors 7 are both normal, and jump to the end; if not, proceed to Step 8;

[0145] Step 8: The discharge, suction, and discharge temperature sensors 7 are all abnormal, and end.

[0146] Figure 3 It is the flow chart of the thinking of the second outdoor unit judgment module of this patent; the purpose of the second outdoor unit judgment module is to use the outer ring temperature sensor 5, the suction temperature sensor 6, and the discharge temperature sensor 7 to judge the situation of the high and low pressure sensors 1;

[0147] Step 1: Determine whether the suction temperature sensor 6 and the discharge temperature sensor 7 are both normal; if so, determine whether |P low - P suction| ≤ threshold is satisfied; if so, the low pressure sensor 1 is normal and the high pressure sensor 2 is abnormal, if not, the low pressure sensor 1 is abnormal, and determine whether |P high - P discharge| ≤ threshold is satisfied; if so, the high pressure sensor 2 is normal, and jump to the end; if not, the high pressure sensor 2 is abnormal, and jump to the end; if not, proceed to Step 2;

[0148] Step 2: Determine whether the discharge temperature sensor 7 and the outer ring temperature sensor 5 are both normal; if so, determine whether |P high - P discharge| ≤ threshold is satisfied; if so, the high pressure sensor 2 is normal and the low pressure sensor 1 is abnormal, if not, the high pressure sensor 2 is abnormal, and determine whether |P low - P discharge| ≤ threshold is satisfied; if so, the low pressure sensor 1 is normal, and jump to the end; if not, the low pressure sensor 1 is abnormal, and jump to the end; if not, proceed to Step 3;

[0149] The third step is to determine whether the suction temperature sensing package 6 and the outer ring temperature sensing package 5 are both normal; if so, determine whether |P low - P suction | ≤ threshold value is satisfied; if so, the low pressure sensor 1 is normal and the high pressure sensor 2 is abnormal; otherwise, the low pressure sensor 1 is abnormal, and determine |P high - P suction | ≤ threshold value; if so, the high pressure sensor 2 is normal, and jump to the end; if otherwise, the high pressure sensor 2 is abnormal, and jump to the end; if not, enter the fourth step;

[0150] Step 4: Both high and low pressure sensors 1 are abnormal;

[0151] Figure 4 This is a flow chart of the idea of ​​the third external unit judgment module of the patent; when |P low - P high | ≤ threshold is met, the third external unit judgment module will be entered;

[0152] The first step is to determine whether |T low - T suction | ≤ 2°C is satisfied; if not, the suction temperature sensing package 6 is abnormal, then proceed to the second step; if yes, the suction temperature sensing package 6 is normal, then proceed to the second step;

[0153] The second step is to determine whether |T high - T exhaust | ≤ 2°C is satisfied; if not, the exhaust temperature sensing package 7 is abnormal, and then proceed to the third step; if yes, the exhaust temperature sensing package 7 is normal, and then proceed to the third step;

[0154] The third step is to determine whether |T low - T outside |≤2°C and |T high - T outside |≤2°C are satisfied; if not, the outer ring temperature sensing package 5 is abnormal; if so, the outer ring temperature sensing package 5 is normal, and the process goes to the fourth step;

[0155] Step 4. End.

[0156] Figure 5 This is a flow chart of the idea of ​​the internal machine judgment module of the patent; after passing through the above judgment module, the quality of the outer ring temperature sensing package 5, the intake temperature sensing package 6, the exhaust temperature sensing package 7 and the high and low pressure sensor 1 has been determined; the purpose of the internal judgment module is to judge the indoor pipe temperature sensing package 3 and the inner ring temperature sensing package 4.

[0157] The first step is to determine whether the outer ring temperature sensing package 5, the air intake temperature sensing package 6, the exhaust temperature sensing package 7 and the high and low pressure sensor 1 are all abnormal; if so, determine whether |Tinner tube-Tinner ring|≤2°C; if so, the indoor pipe temperature sensing package 3 and the inner ring temperature sensing package 4 are normal; otherwise, the indoor pipe temperature sensing package 3 and the inner ring temperature sensing package 4 are abnormal; if not, proceed to the second step;

[0158] The second step is to select the data without abnormality from the five sensors: the outer ring temperature sensor 5, the air intake temperature sensor 6, the exhaust temperature sensor 7, the low pressure sensor 1, and the high pressure sensor 2, and then take the average value, which is recorded as T1;

[0159] The third step is to determine whether |Tinner tube - T1|≤2℃ is satisfied; if not, the indoor tube temperature sensing package 3 is abnormal; if yes, the indoor tube temperature sensing package is abnormal;

[0160] The fourth step is to determine whether |Tinner ring - T1|≤2°C is satisfied; if not, the inner ring temperature sensing package 4 is abnormal; if yes, the inner ring temperature sensing package 4 is abnormal;

[0161] Figure 6 This is the system schematic diagram of the patent; its main purpose is to indicate the location of each temperature sensing package and pressure sensor.

[0162] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0163] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0164] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0165] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0166] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A detection method, characterized in that: include: The equipment to be tested is shut down for a period of time; Obtain data from the temperature detection module and the pressure detection module of the device to be detected; Acquire the corresponding relationship between the data of the temperature detection module and the data of the pressure detection module of the device to be detected; Calculating the difference between the pressure on the high-pressure side and the pressure on the low-pressure side of the device to be detected detected by the pressure detection module, and judging whether the pressure detection module is abnormal according to the difference between the pressure on the high-pressure side and the pressure on the low-pressure side; If the pressure detection module is abnormal, detect whether the temperature detection module is abnormal, and find out the abnormal pressure sensor; If the pressure detection module is normal, then detect whether the temperature detection module is abnormal; If the temperature detection module is abnormal, the device to be detected is controlled to shut down.

2. The detection method according to claim 1, characterized in that: The method for obtaining the corresponding relationship between the data of the temperature detection module and the data of the pressure detection module of the device to be detected includes: Obtaining a saturation pressure corresponding to the saturation temperature detected by the temperature detection module according to the type of refrigerant; and / or, A saturation temperature corresponding to the saturation pressure detected by the pressure detection module is obtained according to the type of refrigerant.

3. The detection method according to claim 1, characterized in that: The method for judging whether the pressure detection module is abnormal according to the difference between the pressure on the high-pressure side and the pressure on the low-pressure side includes: If the difference between the pressure on the high-pressure side and the pressure on the low-pressure side detected by the pressure detection module is greater than a threshold, it is determined that the pressure detection module is abnormal; If the difference between the pressure on the high-pressure side and the pressure on the low-pressure side detected by the pressure detection module is less than or equal to the threshold, it is determined that the pressure detection module has no abnormality.

4. The detection method according to claim 1, characterized in that: The pressure detection module comprises: A low-pressure sensor (1), used for detecting the pressure on the low-pressure side of the device to be detected; The high-pressure sensor (2) is used to detect the pressure on the high-pressure side of the device to be detected.

5. The detection method according to claim 1, characterized in that: The temperature detection module comprises: Indoor pipe temperature sensing package (3), used for detecting the temperature of the indoor heat exchanger; The inner ring temperature sensing package (4) is used to detect the temperature of the indoor environment; The outer ring temperature sensing package (5) is used to detect the temperature of the outdoor environment; The suction temperature sensing package (6) is used to detect the temperature of the suction pipe of the compressor; The exhaust temperature sensing package (7) is used to detect the temperature of the exhaust pipe of the compressor.

6. The detection method according to claim 1, characterized in that: If the pressure detection module is abnormal, detecting whether the temperature detection module is abnormal, and finding the abnormal pressure sensor includes: Determine whether the outer ring temperature sensing package (5), the air intake temperature sensing package (6) and the air exhaust temperature sensing package (7) are abnormal; Using the judgment results of the outer ring temperature sensing package (5), the air intake temperature sensing package (6), and the air discharge temperature sensing package (7), it is judged whether the high pressure sensor (2) and the low pressure sensor (1) are abnormal; Determine whether the indoor pipe temperature sensing package (3) and the inner ring temperature sensing package (4) are abnormal.

7. The detection method according to claim 6, characterized in that: The method for judging whether the outer ring temperature sensing package (5), the air intake temperature sensing package (6) and the air exhaust temperature sensing package (7) are abnormal comprises: Record the temperature value Texhaust detected by the exhaust temperature sensing package (7), the temperature value Tsuction detected by the intake temperature sensing package (6), and the temperature value Texterior detected by the outer ring temperature sensing package (5); set a threshold value X; Judge whether it satisfies |T_discharge - T_suction| ≤ X °C, |T_outside - T_suction| ≤ X °C, and |T_outside - T_discharge| ≤ X °C; if so, the outer ring temperature sensor (5), the suction temperature sensor (6), and the discharge temperature sensor (7) are all normal; Otherwise, judge whether it satisfies |T_discharge - T_suction| ≤ X °C and |T_outside - T_suction| ≤ X °C; if so, the suction temperature sensor (6) is normal; judge whether it satisfies |T_discharge - T_suction| ≤ |T_outside - T_suction|; if so, the outer ring temperature sensor (5) is abnormal and the discharge temperature sensor (7) is normal; otherwise, judge that the outer ring temperature sensor (5) is normal and the discharge temperature sensor (7) is abnormal; If it does not satisfy |T_discharge - T_suction| ≤ |T_outside - T_suction|, judge whether it satisfies |T_suction - T_discharge| ≤ X °C and |T_outside - T_discharge| ≤ X °C; if so, the discharge temperature sensor (7) is normal, judge whether it satisfies |T_suction - T_discharge| ≤ |T_outside - T_discharge|; if so, the outer ring temperature sensor (5) is abnormal and the suction temperature sensor (6) is normal; if not, the outer ring temperature sensor (5) is normal and the suction temperature sensor (6) is abnormal; If it does not satisfy |T_suction - T_discharge| ≤ X °C and |T_outside - T_discharge| ≤ X °C, judge whether it satisfies |T_discharge - T_outside| ≤ X °C and |T_suction - T_outside| ≤ X °C; if so, the outer ring temperature sensor (5) is normal, judge whether it satisfies |T_discharge - T_outside| ≤ |T_suction - T_outside|; if so, the suction temperature sensor (6) is abnormal and the discharge temperature sensor (7) is normal; if not, the suction temperature sensor (6) is normal and the discharge temperature sensor (7) is abnormal; If it does not satisfy |T_discharge - T_outside| ≤ X °C and |T_suction - T_outside| ≤ X °C, judge whether it satisfies |T_discharge - T_suction| ≤ X °C; if so, the outer ring temperature sensor (5) is abnormal and the suction temperature sensor (6) and the discharge temperature sensor (7) are both normal; If it does not satisfy |T_discharge - T_suction| ≤ X °C, judge whether it satisfies |T_outside - T_discharge| ≤ X °C; if so, the suction temperature sensor (6) is abnormal and the outer ring temperature sensor (5) and the discharge temperature sensor (7) are both normal; If it does not satisfy |T_outside - T_discharge| ≤ X °C, judge whether it satisfies |T_outside - T_suction| ≤ X °C; if so, the discharge temperature sensor (7) is abnormal and the suction temperature sensor (6) and the discharge temperature sensor (7) are both normal; If it does not satisfy |T_outside - T_suction| ≤ X °C, then the outer ring temperature sensor (5), the suction temperature sensor (6), and the discharge temperature sensor (7) are all abnormal.

8. The detection method according to claim 6, characterized in that: The method for judging whether the high-pressure sensor (2) and the low-pressure sensor (1) are abnormal by using the outer ring temperature sensor (5), the suction temperature sensor (6), and the discharge temperature sensor (7) includes: Determine whether the air intake temperature sensing package (6) and the air exhaust temperature sensing package (7) are both normal; if so, determine whether |P low - P intake | ≤ threshold value is satisfied; if so, the low pressure sensor (1) is normal and the high pressure sensor (2) is abnormal; if not, the low pressure sensor (1) is abnormal; determine whether |P high - P exhaust | ≤ threshold value is satisfied; if so, the high pressure sensor (2) is normal; If the condition that both the air intake temperature sensing package (6) and the air exhaust temperature sensing package (7) are normal is not satisfied, it is determined whether both the air exhaust temperature sensing package (7) and the outer ring temperature sensing package (5) are normal; if so, it is determined whether |P high - P exhaust |≤ threshold is satisfied; if so, the high-pressure sensor (2) is normal and the low-pressure sensor (1) is abnormal; if not, the high-pressure sensor (2) is abnormal, and it is determined whether |P low - P exhaust |≤ threshold is satisfied; if so, the low-pressure sensor (1) is normal; if not, the low-pressure sensor (1) is abnormal; If the exhaust temperature sensing package (7) and the outer ring temperature sensing package (5) are not both normal, then it is determined whether the intake temperature sensing package (6) and the outer ring temperature sensing package (5) are both normal; if so, then it is determined whether |P low - P suction | ≤ threshold value is satisfied; if so, then the low pressure sensor (1) is normal and the high pressure sensor (2) is abnormal; if not, then the low pressure sensor (1) is abnormal, and it is determined whether |P high - P suction | ≤ threshold value is satisfied; if so, then the high pressure sensor (2) is normal; if not, then the high pressure sensor (2) is abnormal; If the air intake temperature sensing package (6) and the outer ring temperature sensing package (5) are not both normal, then the high pressure sensor (2) and the low pressure sensor (1) are both abnormal.

9. The detection method according to claim 6, characterized in that: The method for judging whether the indoor pipe temperature sensing package (3) and the inner ring temperature sensing package (4) are abnormal comprises: Determine whether the outer ring temperature sensing package (5), the air intake temperature sensing package (6), the air exhaust temperature sensing package (7), the high pressure sensor (2) and the low pressure sensor (1) are all abnormal; if so, determine whether |Tinner tube - Tinner ring|≤X°C; if so, the indoor pipe temperature sensing package (3) and the inner ring temperature sensing package (4) are normal; otherwise, the indoor pipe temperature sensing package (3) and the inner ring temperature sensing package (4) are abnormal; If the condition that the outer ring temperature sensing package (5), the air intake temperature sensing package (6), the air exhaust temperature sensing package (7), the high pressure sensor (2) and the low pressure sensor (1) are all abnormal is not satisfied, then the detection data without abnormality is selected from the outer ring temperature sensing package (5), the air intake temperature sensing package (6), the air exhaust temperature sensing package (7), the low pressure sensor (1) and the high pressure sensor (2), and the average value of the detection data without abnormality is taken and recorded as T1; Determine whether |Tinner tube-T1|≤X°C is satisfied; if not, the indoor tube temperature sensing package (3) is abnormal; if yes, the indoor tube temperature sensing package is abnormal; Determine whether |Tinner ring - T1|≤X°C is satisfied; if not, the inner ring temperature sensing package (4) is abnormal; if so, the inner ring temperature sensing package (4) is abnormal.

10. The detection method according to claim 1, characterized in that: If the pressure detection module is not abnormal, the method for detecting whether the temperature detection module is abnormal includes: Check whether the air intake temperature sensing package (6), the air exhaust temperature sensing package (7) and the outer ring temperature sensing package (5) are abnormal; Whether the indoor pipe temperature sensing package (3) and the inner ring temperature sensing package (4) are abnormal is determined based on whether the air intake temperature sensing package (6), the air exhaust temperature sensing package (7) and the outer ring temperature sensing package (5) are abnormal.

11. The detection method according to claim 10, characterized in that: The method for detecting whether the air intake temperature sensing package (6), the air exhaust temperature sensing package (7) and the outer ring temperature sensing package (5) are abnormal comprises: Determine whether |T low - T suction | ≤ X°C is satisfied; if not, the suction temperature sensing package (6) is abnormal; if so, the suction temperature sensing package (6) is normal; Determine whether |Thigh-Texhaust|≤X°C is satisfied; if not, the exhaust temperature sensing package (7) is abnormal; if so, the exhaust temperature sensing package (7) is normal; Determine whether |Tlow-Tout|≤X°C and |Thigh-Tout|≤X°C are satisfied; if not, the outer ring temperature sensing package (5) is abnormal; if so, the outer ring temperature sensing package (5) is normal.

12. The detection method according to claim 10, characterized in that: A method for determining whether the indoor pipe temperature sensing package (3) and the inner ring temperature sensing package (4) are abnormal according to whether the air intake temperature sensing package (6), the air exhaust temperature sensing package (7) and the outer ring temperature sensing package (5) are abnormal comprises: Determine whether the outer ring temperature sensing package (5), the air intake temperature sensing package (6), the air exhaust temperature sensing package (7), the high pressure sensor (2) and the low pressure sensor (1) are all abnormal; if so, determine whether |Tinner pipe - Tinner ring|≤X°C; if so, the indoor pipe temperature sensing package (3) and the inner ring temperature sensing package (4) are normal; otherwise, the indoor pipe temperature sensing package (3) and the inner ring temperature sensing package (4) are abnormal; If the condition that the outer ring temperature sensing package (5), the air intake temperature sensing package (6), the air exhaust temperature sensing package (7), the high pressure sensor (2) and the low pressure sensor (1) are all abnormal is not satisfied, then the detection data without abnormality is selected from the outer ring temperature sensing package (5), the air intake temperature sensing package (6), the air exhaust temperature sensing package (7), the low pressure sensor (1) and the high pressure sensor (2), and the average value of the detection data without abnormality is taken and recorded as T1; Determine whether |Tinner tube-T1|≤X°C is satisfied; if not, the indoor tube temperature sensing package (3) is abnormal; if yes, the indoor tube temperature sensing package is abnormal; Determine whether |Tinner ring - T1|≤X°C is satisfied; if not, the inner ring temperature sensing package (4) is abnormal; if so, the inner ring temperature sensing package (4) is abnormal.

13. An air conditioner, characterized in that: The air conditioner is applicable to the detection method described in any one of claims 1 to 12.

14. The air conditioner according to claim 13, characterized in that: The air conditioner comprises: A compressor (10), wherein an intake temperature sensing package (6) and a low-pressure sensor (1) are arranged on an intake pipe (101) of the compressor (10); and an exhaust temperature sensing package (7) and a high-pressure sensor (2) are arranged on an exhaust pipe (102) of the compressor (10); An evaporator (20) is connected to the suction pipe (101) of the compressor (10), and an indoor pipe temperature sensing package (3) and an inner ring temperature sensing package (4) are provided on the evaporator (20); The condenser (30) is connected to the exhaust pipe (102) of the compressor (10), and an outer ring temperature sensing package (5) is provided on the condenser (30).

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