WO2020048201A1

WO2020048201A1 - Method and device for detecting type of refrigerant filled in air conditioner

Info

Publication number: WO2020048201A1
Application number: PCT/CN2019/093628
Authority: WO
Inventors: 陈华; 刘合心; 黄春; 任小辉; 陈东
Original assignee: 宁波奥克斯电气股份有限公司; 奥克斯空调股份有限公司
Priority date: 2018-09-06
Filing date: 2019-06-28
Publication date: 2020-03-12
Also published as: CN110878979B; CN110878979A

Abstract

Provided by the present disclosure are a method and device for detecting the type of a refrigerant filled in an air conditioner, and the air conditioner comprising the device. The method for detecting the type of refrigerant filled in an air conditioner according to the present disclosure comprises the following steps: S1. when the air conditioner is stopped, allowing the air conditioner to enter a high and low-pressure equilibrium state; S2. detecting a high-pressure pressure value and the refrigerant temperature of a gaseous refrigerant ejected from a compressor of the air conditioner; S3. searching for a saturation temperature corresponding to each type of refrigerant under the high-pressure pressure value; S4. comparing the saturation temperatures to the refrigerant temperature to obtain a target saturation temperature; and S5. determining the type of a target refrigerant filled in the air conditioner according to the target saturation temperature. The method and device for detecting the type of refrigerant filled in an air conditioner according to the present disclosure may automatically and accurately detect the type of refrigerant filled in the air conditioner.

Description

Detection method and detection device for refrigerant filling type of air conditioner, and air conditioner

Technical field

The present disclosure relates to the technical field of air conditioners, and in particular, to a detection method and a detection device for a refrigerant filling type of an air conditioner, and also to an air conditioner including the detection device.

Background technique

With the development of science and technology and the improvement of people's living standards, air conditioners have been used more and more widely in many occasions.

In the air conditioner, the basic principles of exhausting heat when the refrigerant is liquefied and absorbing heat when the substance is vaporized are used. When the refrigeration function is started, the high-temperature and high-pressure gas discharged from the compressor enters the condenser, absorbs heat in the outdoor condenser and becomes a liquid of high pressure and normal temperature, and then enters the throttle valve to reduce the pressure to become a low-pressure and low-temperature liquid before entering the room. The evaporator absorbs the heat of the room and turns it into a low-pressure, normal-temperature gas, which is then sucked into the compressor and cycled again and again.

At present, the refrigerants used in refrigeration equipment such as air conditioners and refrigerators mainly include various refrigerants such as R22, R410a, and R134a. In the current market, a variety of refrigeration equipment using different refrigerants are widely distributed in the market. Therefore, during the maintenance process, the maintenance personnel may add the refrigerant incorrectly, resulting in abnormal operating parameters of the unit, and it is often difficult to find the cause of the fault from the operating parameters. When the wrong refrigerant is used and continued to be used, the air conditioner has a variety of accidents such as poor refrigeration effect, the mismatch between refrigeration oil and refrigerant, which damages the compressor, and the refrigerant pressure is different.

Summary of the Invention

In view of this, the present disclosure aims to propose a detection method and a detection device for a refrigerant filling type of an air conditioner, and an air conditioner including the detection device to at least partially solve the problems and deficiencies in the prior art described above.

To achieve the above objective, the technical solution of the present disclosure is implemented as follows:

A method for detecting the refrigerant filling type of an air conditioner includes the following steps:

S1. When the air conditioner is stopped, make the air conditioner reach a high-low pressure equilibrium state;

S2. Detecting a high-pressure pressure value Pd and a refrigerant temperature Tre of the high-pressure gaseous refrigerant sprayed from the air conditioner compressor, wherein the refrigerant temperature Tre is any one of an outdoor ambient temperature Tout or an air-conditioning pipeline temperature Tin;

S3. Find the saturation temperatures Ts1, Ts2 ... Tsn corresponding to the respective refrigerants R1, R2 ... Rn under the high pressure pressure value Pd;

S4. Compare the saturation temperatures Ts1, Ts2, ..., Tsn with the refrigerant temperature Tre to obtain a target saturation temperature Tsm that matches the refrigerant temperature Tre, and the target saturation temperature Tsm is the saturation temperature. One of Ts1, Ts2 ... Tsn;

S5. According to the target saturation temperature Tsm, a target refrigerant type Rm filled in the air conditioner is determined among the various types of refrigerants R1, R2, ..., Rn, and the target refrigerant type Rm is the various types of refrigerant R1. One of R2 ... Rn.

Further, the air conditioner has a preset refrigerant type Rm ', and when the target refrigerant type Rm determined in step S5 is inconsistent with the preset refrigerant type Rm', an alarm is issued.

Further, step S1 includes the following sub-steps:

S1-1. When the air conditioner is stopped, open the solenoid valve to detect the high-pressure pressure value Pd of the compressor exhaust pressure of the air-conditioner and the low-pressure pressure value Psl of the compressor suction pressure of the air-conditioner in real time;

S1-2. Compare the pressure difference value | Pd-Psl | of the high-pressure pressure value Pd and the low-pressure pressure value Psl;

S1-3. When the pressure difference value | Pd-Psl | falls below a first threshold Th1, it is determined that the air conditioner reaches a high-low pressure equilibrium state,

S1-4. Close the solenoid valve.

Further, the first threshold Th1 is less than or equal to 0.4 bar.

Further, the first threshold Th1 is less than or equal to 0.2 bar.

Further, it is characterized in that step S4 includes the following sub-steps:

S4-4. Obtain the target saturation temperature Tsm corresponding to the target temperature difference value | Tsm-Tre | as the target saturation temperature Tsm that matches the refrigerant temperature Tre.

Further, the second threshold Th2 is less than or equal to 5 ° C.

Further, the second threshold Th2 is less than or equal to 3 ° C.

An air conditioner refrigerant filling detection device includes a high pressure sensor, a low pressure sensor, a temperature sensor, and a detection module. The high pressure sensor and the low pressure sensor are respectively disposed at an outlet of an air conditioner compressor and an inlet of the air conditioner compressor. Where the temperature sensor is installed on any one of the outdoor unit of the air conditioner or the wall of the air conditioning pipeline, and the high pressure sensor and the low pressure sensor respectively detect the high pressure pressure value Pd and the compression of the exhaust pressure of the air conditioner compressor. The low-pressure pressure value Psl of the intake pressure of the engine, the temperature sensor detects the refrigerant temperature Tre, and the detection module determines the air conditioner based on the detection results of the high-pressure pressure value Pd, the low-pressure pressure value Psl, and the refrigerant temperature Tre. The type of refrigerant filled.

Further, the detection device for the refrigerant filling type of the air conditioner further includes an alarm prompt module, and the alarm prompt module feedbacks the detection result.

The present disclosure also provides an air conditioner, which includes the detection device for the refrigerant filling type of the air conditioner mentioned in the above embodiment. Compared with the prior art, the detection method and the detection device for the refrigerant filling type of the air conditioner according to the present disclosure With the air conditioner, the present disclosure can automatically and accurately detect the type of refrigerant filled in the air conditioner, and after the operator fills the air conditioner with an incorrect refrigerant that does not match the original refrigerant type, an alarm is provided. Therefore, accidents such as poor cooling effect of the air conditioner caused by continued use of the wrong refrigerant and damage to the compressor due to mismatch of refrigeration oil and refrigerant can be avoided.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings constituting a part of the present disclosure are used to provide a further understanding of the present disclosure. The exemplary embodiments of the present disclosure and the description thereof are used to explain the present disclosure, and do not constitute an improper limitation on the present disclosure. In the drawings:

FIG. 1 is a flowchart of a method for detecting a refrigerant filling type of an air conditioner according to an embodiment of the present disclosure;

2 is a schematic diagram of a refrigerant filling detection device for an air conditioner according to an embodiment of the present disclosure;

FIG. 3 is a correspondence diagram between the temperature and the saturation pressure of a common refrigerant in the air conditioner field.

Reference sign description: outdoor unit part-A, indoor unit part-B, indoor unit refrigerant line 1-B1, indoor unit refrigerant line 2-B2, indoor unit refrigerant line n-Bn, high pressure sensor-1, low pressure Sensor-2, temperature sensor-3, detection module-4, air-conditioner compressor outlet-51, air-conditioner compressor inlet-52, alarm prompt module-6, solenoid valve-7, large valve-8, Small valve-9, fin heat exchanger-10, four-way valve-11, gas-liquid separator-12, M-pipe connection, N-communication connection.

detailed description

It should be noted that, in the case of no conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

In the present disclosure, the "high-pressure pressure value" is the exhaust pressure of the air conditioner compressor, and a corresponding sensor that detects the exhaust pressure is called a "high-pressure sensor", and the refrigerant discharged from the air-conditioner compressor is called a high-pressure gaseous refrigerant; The "low pressure value" is the suction pressure of the air conditioner compressor, and the corresponding sensor that detects the suction pressure is called a "low pressure sensor". The “high and low pressure equilibrium state” refers to a state where the pressures in the pipes of the indoor unit and the outdoor unit of the air conditioner are balanced with each other.

The disclosure will be described in detail below with reference to the drawings and embodiments.

As shown in FIG. 1, an embodiment of the present disclosure provides a method for detecting a refrigerant filling type of an air conditioner, which specifically includes the following steps:

S1. When the air conditioner is stopped, the air conditioner is brought to a high-low pressure equilibrium state. Specifically, in step S1, when the air conditioner is stopped, the solenoid valve 7 is opened, so that the indoor and outdoor units of the air conditioner are The pressures in the pipelines are balanced with each other, and when the air conditioner reaches or approaches a high-low pressure equilibrium state, the solenoid valve 7 is closed;

S2. The high-pressure sensor 1 and the temperature sensor 3 are respectively used to detect the high-pressure pressure value Pd and the refrigerant temperature Tre of the high-pressure gaseous refrigerant ejected from the compressor of the air conditioner, wherein the refrigerant temperature Tre is the outdoor ambient temperature Tout or the air-conditioning pipe temperature Tin Any one of

At the same saturation temperature, the saturation pressure values corresponding to different kinds of the refrigerants are different, and the relationship between the saturation pressure value and the saturation temperature is one-to-one correspondence. Therefore, in the embodiment of the present disclosure, the In the detection method of the refrigerant filling type of the air conditioner, it is possible to check which refrigerant temperature Tre is related to the refrigerant at the high pressure pressure value Pd under the shutdown state and the high-low pressure equilibrium state. The saturation temperatures are matched to each other to determine the type of refrigerant.

In some embodiments of the present disclosure, the air conditioner has a preset refrigerant type Rm ', and when the target refrigerant type Rm determined in step S5 is inconsistent with the preset refrigerant type Rm', an alarm is provided. By setting the preset refrigerant type Rm ', an alarm can be promptly performed when the maintenance personnel adds the wrong refrigerant, thereby avoiding abnormal operating parameters of the unit and damage to the air conditioner.

In some embodiments of the present disclosure, in order to more accurately determine whether the air conditioner has reached a high-low pressure equilibrium state in step S1, a first threshold value Th1 may be set, and the first threshold value Th1 is a measure of the air conditioner. The parameter of the closeness of the high pressure pressure value Pd of the high pressure gaseous refrigerant of the compressor exhaust pressure and the low pressure pressure value Psl of the suction pressure of the compressor of the air conditioner, by setting a first threshold value, the detection and judgment process is more reasonable It is accurate and avoids judgment errors caused by sensor errors. When the pressure difference value | Pd-Psl | of the high-pressure pressure value Pd and the low-pressure pressure value Psl reaches or falls below the first threshold Th1, it is determined that the air conditioner has reached the high-low pressure equilibrium state. Since the sensor used for pressure measurement must have a certain error, the setting of the first threshold Th1 can more effectively and timely judge whether the air conditioner has reached a high-low pressure equilibrium state.

Specifically, step S1 includes the following sub-steps:

S1-1. When the air conditioner is stopped, open the solenoid valve 7 to detect the high-pressure pressure value Pd of the compressor's exhaust pressure and the low-pressure pressure value Psl of the compressor's suction pressure of the air conditioner in real time;

S1-3. When the pressure difference value | Pd-Psl | decreases to a first threshold Th1, it is determined that the air conditioner reaches a high-low pressure equilibrium state;

S1-4. Close the solenoid valve 7.

Wherein, in some embodiments of the present disclosure, the first threshold Th1 is less than or equal to 0.4 bar. In some embodiments, the first threshold Th1 is less than or equal to 0.2 bar.

In the method for detecting the refrigerant filling type of the air conditioner provided by the embodiment of the present disclosure, the principle that different types of different refrigerants have different saturation temperatures under different saturation pressures is used, because the types of refrigerants under the high pressure pressure value Pd The saturation temperatures Ts1, Ts2, ..., Tsn are different, and there are obvious differences. Therefore, through steps S4 and S5, it can be determined which refrigerant temperature Tre is at a specific high-pressure pressure value Pd. The temperatures of the refrigerants are matched with each other, so that the type of the refrigerant filled in the air conditioner is accurately determined.

In some embodiments of the present disclosure, in order to more accurately determine the type of refrigerant in the air conditioner in step S4, a second threshold value Th2 may be set. By setting the second threshold value, the detection and judgment process is more reasonable and accurate. Avoiding errors due to sensor errors. Specifically, step S4 includes the following sub-steps:

The second threshold Th2 is less than or equal to 5 ° C. In some embodiments, the second threshold Th2 is less than or equal to 3 ° C. That is, when the approximation degree of the saturation temperature of a certain refrigerant at the high pressure pressure value Pd and the actually measured refrigerant temperature Tre reaches the second threshold value Th2, it can be judged that The refrigerant is the refrigerant filled in the air conditioner.

As shown in FIG. 2, in some embodiments of the present disclosure, a detection device for the refrigerant filling type of an air conditioner is also provided, wherein the solid line portion in FIG. 2 represents the pipeline connection M of the refrigerant cycle, and the dotted line portion Indicates communication connection N. The solenoid valve 7 controls the pressure in the pipes of the outdoor unit A and the indoor unit B of the air conditioner to balance each other.

Reference numerals

11 and 12 are a four-way valve and a gas-liquid separator, respectively. The temperature sensor 3 is fixed to the fin. Heat exchanger 10 on. The refrigerant circulation pipeline of the air conditioner is provided with a large valve 8 and a small valve 9, and the refrigerant starting from the outlet 51 of the air conditioner compressor is along the indoor unit refrigerant pipeline 1-B1 of the indoor unit B, indoor The air-conditioning refrigerant pipelines 2-B2 ... The indoor air-conditioning refrigerant pipelines n-Bn are circulated to perform the cooling function, and finally return to the compressor of the air conditioner from the inlet 52 of the air conditioner compressor. The detection device for the refrigerant filling type of the air conditioner provided in the embodiment of the present disclosure includes a high-pressure sensor 1, a low-pressure sensor 2, a temperature sensor 3, and a detection module 4.

The high-pressure sensor 1 and the low-pressure sensor 2 detect a high-pressure pressure value Pd of an exhaust pressure of an air conditioner compressor and a low-pressure pressure value Psl of an intake pressure, respectively. Therefore, the high-pressure sensor 1 and the low-pressure sensor 2 are respectively provided at an outlet 51 of the air conditioner compressor and an inlet 52 of the air conditioner compressor.

The temperature sensor 3 detects a refrigerant temperature Tre. Since the refrigerant temperature Tre is close to an ambient temperature, the temperature sensor 3 is disposed on an outdoor unit of an air conditioner or on a wall of an air conditioning pipe.

The detection module 4 is communicatively connected to the high-pressure sensor 1 and the low-pressure sensor 2 and the temperature sensor 3, respectively. The detection module 4 is based on the received high-pressure pressure value Pd, the low-pressure pressure value Psl, and The detection result of the refrigerant temperature Tre determines the type of refrigerant filled in the air conditioner by using the method for detecting the type of refrigerant filling of the air conditioner according to the embodiment of the present disclosure. Preferably, the detection device for the refrigerant filling type of the air conditioner further includes an alarm prompting module 6, and the alarm prompting module 6 feedbacks the detection result. The feedback mode may be an audible or illuminated alarm, a digital text display, or a voice prompt. In addition, those skilled in the art may design and select the detection module 4 according to the prior art to implement the data analysis and comparison function, and details are not described herein again.

An embodiment of the present disclosure further provides an air conditioner, including the detection device for a refrigerant filling type of the air conditioner mentioned in the foregoing embodiment.

Example 1

In this embodiment, the following steps are used to determine the refrigerant filling type of the air conditioner.

S1. When the air conditioner is stopped, open the solenoid valve 7, and use the high pressure sensor 1 and the low pressure sensor 2 to detect the high pressure pressure value Pd and the low pressure pressure value of the low pressure air refrigerant drawn into the air conditioner compressor in real time. Psl; when the pressure difference | Pd-Psl | is reduced to 0.2 bar, it is determined that the air conditioner reaches a high-low pressure equilibrium state, at this time, the solenoid valve 7 is closed;

S2. Use the high-pressure sensor 1 and the temperature sensor 3 to detect a high-pressure pressure value Pd and a refrigerant temperature Tre of a high-pressure gaseous refrigerant ejected from an air conditioner compressor, wherein the refrigerant temperature Tre is an outdoor ambient temperature Tout or an air conditioner. Any one of the pipeline temperature Tin;

S3. Find the saturation temperatures Ts1, Ts2, ..., Tsn, corresponding to various types of refrigerants R1, R2, ..., Rn, under the high-pressure pressure value Pd through the detection module 4.

S5. Through the detection module 4, according to the target saturation temperature Tsm, determine the target refrigerant type Rm filled in the air conditioner among the various types of refrigerants R1, R2, ..., Rn, and the target refrigerant type Rm is One of the various types of refrigerants R1, R2,... Rn.

Figure 3 and Table 1 show the corresponding relationship between the saturation temperature and pressure of refrigerants commonly used in the field of air conditioners.

Table 1

For example, when the difference values | Pd-Psl | of the high-pressure pressure value Pd and the low-pressure pressure value Psl detected by the high-pressure sensor 1 and the low-pressure sensor 2 respectively decrease to 0.2 bar, the solenoid valve 7 is closed, At this time, the refrigerant temperature Tre detected by the temperature sensor 3 provided on the outdoor unit of the air conditioner is 11 ° C, and the high-pressure sensor 1 and the detected high-pressure pressure value Pd are 10 bar. In Figure 3 and Table 1, the corresponding saturation temperatures Ts22, Ts410a, and Ts134a of the three refrigerants R22, R410a, and R134a at a pressure value of 10 bar are Ts22 = 27 ° C, Ts410a = 10.3 ° C, and Ts134a = 43 ° C. Therefore, The temperature difference values Ts22, Ts410a, and Ts134a of the three refrigerants R22, R410a, and R134a from the refrigerant temperature Tre | Ts22-Tre |, | Ts410a-Tre |, and | Ts134a-Tre | are: | Ts22-Tre | = | 27 ° C-11 ° C | = 16 ° C; | Ts410a-Tre | = | 10.3 ° C-11 ° C | = 0.7 ° C and | Ts134a-Tre | = | 43 ° C-11 ° C | = 32 ° C, Since | Ts410a-Tre | = 0.7 ° C, which is lower than 3 ° C, it is determined that the target temperature difference value | Tsm-Tre | is the | Ts410a-Tre |, so Saturation temperature of the target Tsm Tsm = Ts410a = 10.3 ℃, so that the target species Rm is refrigerant R410a.

Unless there are technical obstacles or contradictions, the above-mentioned various embodiments of the present disclosure can be freely combined to form further embodiments, and these additional embodiments are all within the protection scope of the present disclosure.

Although the present disclosure has been described with reference to the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplarily illustrate preferred embodiments of the present disclosure, and should not be construed as a limitation to the present disclosure. The dimensional ratios in the drawings are only schematic and should not be construed as limiting the present disclosure.

Although some embodiments of the present general inventive concept have been shown and described, those of ordinary skill in the art will understand that changes can be made to these embodiments without departing from the principles and spirit of the present general inventive concept. The scope is defined by the claims and their equivalents.

Claims

A method for detecting the refrigerant filling type of an air conditioner, which comprises the following steps:

When the air conditioner is stopped, the air conditioner is brought to a high-low pressure equilibrium state;

Detecting the high-pressure pressure value Pd and the refrigerant temperature Tre of the high-pressure gaseous refrigerant sprayed from the air conditioner compressor, wherein the refrigerant temperature Tre is any one of an outdoor ambient temperature Tout or an air-conditioning pipeline temperature Tin;

Find the saturation temperatures Ts1, Ts2 ... Tsn corresponding to the respective refrigerants R1, R2 ... Rn under the high pressure pressure value Pd;

The saturation temperatures Ts1, Ts2, ..., Tsn are compared with the refrigerant temperature Tre, respectively, to obtain a target saturation temperature Tsm that matches the refrigerant temperature Tre, and the target saturation temperature Tsm is the saturation temperature Ts1, One of Ts2 ... Tsn;

According to the target saturation temperature Tsm, a target refrigerant type Rm filled in the air conditioner is determined among the various types of refrigerants R1, R2, ..., Rn, and the target refrigerant type Rm is the various types of refrigerants R1, R2, ... … One of Rn.
The method for detecting a refrigerant filling type of an air conditioner according to claim 1, further comprising the step of:

When the target refrigerant type Rm filled in the air conditioner is determined, it is compared with the preset refrigerant type Rm 'of the air conditioner. When the target refrigerant type Rm is not consistent with the preset refrigerant type Rm' For alarm prompt.
The method for detecting the refrigerant filling type of an air conditioner according to any one of claims 1 or 2, characterized in that, when the air conditioner is stopped, bringing the air conditioner to a high-low pressure equilibrium state includes the following sub-steps :

When the air conditioner is stopped, the solenoid valve (7) is opened, and the high-pressure pressure value Pd of the compressor's exhaust pressure and the low-pressure pressure value Psl of the compressor's suction pressure of the air conditioner are detected in real time;

Comparing a pressure difference value | Pd-Psl | of the high pressure pressure value Pd and the low pressure pressure value Psl;

When the pressure difference value | Pd-Psl | falls below a first threshold Th1, it is determined that the air conditioner has reached a high-low pressure equilibrium state,

Close the solenoid valve (7).
The method for detecting a refrigerant filling type of an air conditioner according to claim 3, wherein the first threshold value Th1 is less than or equal to 0.4 bar.
The method for detecting a refrigerant filling type of an air conditioner according to claim 4, wherein the first threshold value Th1 is less than or equal to 0.2 bar.
The method for detecting a refrigerant filling type of an air conditioner according to any one of claims 1 or 2, wherein the saturation temperatures Ts1, Ts2, ..., Tsn are compared with the refrigerant temperature Tre, and The target saturation temperature Tsm matching the refrigerant temperature Tre includes the following sub-steps:

Calculate the temperature difference values | Ts1-Tre |, | Ts2-Tre | ... | Tsn-Tre | of the saturation temperatures Ts1, Ts2 ... Tsn and the refrigerant temperature Tre, respectively;

Whether the temperature difference values | Ts1-Tre |, | Ts2-Tre | ... | Tsn-Tre | are lower than a second threshold Th2, respectively;

A target temperature difference value | Tsm-Tre | with a value lower than the second threshold Th2 is obtained, and the target temperature difference value | Tsm-Tre | is the temperature difference values | Ts1-Tre |, | Ts2-Tre | ... … | Tsn-Tre |

Acquire the target saturation temperature Tsm corresponding to the target temperature difference value | Tsm-Tre | as the target saturation temperature Tsm that matches the refrigerant temperature Tre.
The method for detecting a refrigerant filling type of an air conditioner according to claim 6, wherein the second threshold value Th2 is less than or equal to 5 ° C.
The method for detecting a refrigerant filling type of an air conditioner according to claim 7, wherein the second threshold value Th2 is less than or equal to 3 ° C.
A detection device for the refrigerant filling type of an air conditioner, comprising: a high-pressure sensor (1), a low-pressure sensor (2), a temperature sensor (3), and a detection module (4); the high-pressure sensor (1) and the The low-pressure sensor (2) is provided at the outlet (51) of the air conditioner compressor and the inlet (52) of the air conditioner compressor, and the temperature sensor (3) is provided on the outdoor unit of the air conditioner or on the wall of the air conditioning pipeline. Any one of the high pressure sensor (1) and the low pressure sensor (2) respectively detects a high pressure pressure value Pd of an air conditioner compressor discharge pressure and a low pressure pressure value Psl of a compressor suction pressure, and the temperature A sensor (3) detects the refrigerant temperature Tre, and the detection module (4) determines the type of refrigerant filled in the air conditioner based on the detection results of the high pressure pressure value Pd, the low pressure pressure value Psl, and the refrigerant temperature Tre.
The detection device for the refrigerant filling type of an air conditioner according to claim 9, further comprising an alarm prompting module (6), wherein the alarm prompting module (6) feedbacks the detection result.
An air conditioner comprising the detection device for refrigerant filling type of the air conditioner according to claim 9 or 10.