CN115978709A - Air conditioner refrigerant leakage determination method and device and air conditioner - Google Patents
Air conditioner refrigerant leakage determination method and device and air conditioner Download PDFInfo
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Abstract
The application provides a method and a device for determining air conditioner refrigerant leakage, a computer readable storage medium and an air conditioner, wherein the method comprises the following steps: acquiring the detection concentration of the first gas sensor to obtain a first detection concentration, and acquiring the detection concentration of the second gas sensor to obtain a second detection concentration; and sending first alarm information under the condition that the first detection concentration is greater than the second detection concentration and the second detection concentration is greater than a concentration threshold value, wherein the first alarm information is prompt information for prompting the air conditioner to generate refrigerant leakage. This has got rid of indoor use floral water or has sprayed the condition that alcohol antiseptic solution leads to the detected concentration to surpass the concentration threshold value, has avoided the wrong report alert, has solved the poor problem of reliability that air conditioner refrigerant leaked the detection among the prior art.
Description
Technical Field
The application relates to the technical field of refrigerant leakage alarm, in particular to a method and a device for determining refrigerant leakage of an air conditioner, a computer readable storage medium and the air conditioner.
Background
R290 is a more environment-friendly and efficient air conditioning refrigerant, but because of its high flammability and explosiveness, it is necessary to detect leakage of R290 in real time and strictly when applied to indoor air conditioning. For the detection of R290, the concentration of propane gas in the refrigerant of R290 is mainly detected by a gas sensor made of a semiconductor metal oxide film, but the detection has a certain sensitivity to all substances containing carbon-hydrogen bonds, especially to substances containing more carbon-hydrogen bonds such as ethanol and methane, as shown in fig. 1, the sensitivity of the gas sensor to propane is lower than that of methane and ethanol.
In some cases, for example, spraying floral water (containing alcohol) or opening electric mosquito repellent liquid (containing pyrethrin and alcohol) for a long time is prone to false alarms. The leakage of the R290 is a serious safety precaution, so the detection of the leakage must have extremely high reliability to prevent causing troubles to users, and therefore, a more reliable false alarm detection preventing method needs to be used to improve the detection reliability under the condition that the detection material of the R290 does not have major breakthroughs.
On the other hand, the resistance value of the gas sensitive material in the sensor can generate reversible drift under the condition of long-term power failure of the air conditioner, so that the detection value is inaccurate, and the drift can be eliminated only by long-term power-on preheating and aging. The speed of the internal resistance value drift of the gas sensitive resistor varies with different use environments, so that the specific time for power-on preheating aging cannot be determined. Therefore, a reliable verification is needed to determine how the sensor performance has returned to an optimal level.
The above information disclosed in this background section is only for enhancement of understanding of the background of the technology described herein and, therefore, certain information may be included in the background that does not form the prior art that is already known in this country to a person of ordinary skill in the art.
Disclosure of Invention
The present application mainly aims to provide a method and a device for determining air conditioner refrigerant leakage, a computer-readable storage medium, and an air conditioner, so as to solve the problem of poor reliability of air conditioner refrigerant leakage detection in the prior art.
According to an aspect of an embodiment of the present invention, there is provided a method for determining refrigerant leakage of an air conditioner, the air conditioner including an indoor unit and a remote controller, the indoor unit including a first gas sensor, the remote controller including a second gas sensor, the first gas sensor and the second gas sensor being configured to detect a concentration of an air conditioning refrigerant in air, the method including: acquiring the detection concentration of the first gas sensor to obtain a first detection concentration, and acquiring the detection concentration of the second gas sensor to obtain a second detection concentration; and sending first alarm information under the condition that the first detection concentration is greater than the second detection concentration and the second detection concentration is greater than a concentration threshold, wherein the first alarm information is prompt information for prompting the air conditioner to generate refrigerant leakage.
Optionally, when the first detected concentration is greater than the second detected concentration and the second detected concentration is greater than a concentration threshold, sending first warning information, including: generating the first alarm information under the condition that the first detection concentration is greater than the concentration threshold value; under the condition that second alarm information sent by the remote controller is received, judging whether the first detection concentration is greater than the second detection concentration, wherein the second alarm information is used for prompting that the second detection concentration is greater than the concentration threshold value; and sending out the first alarm information under the condition that the first detection concentration is greater than the second detection concentration.
Optionally, after determining whether the first detected concentration is greater than the second detected concentration, the method further comprises: judging whether the triggering time of the first alarm information is earlier than the triggering time of the second alarm information; and under the condition that the first detection concentration is greater than the second detection concentration and the triggering time of the first alarm information is earlier than that of the second alarm information, sending the first alarm information.
Optionally, in a case that the first detected concentration is greater than the second detected concentration and the second detected concentration is greater than a concentration threshold, before sending out first warning information, the method further includes: and under the condition that the absolute value of the difference between the first detection concentration and the second detection concentration is greater than a first difference threshold, preheating the first gas sensor until the absolute value of the difference between the first detection concentration and the second detection concentration is less than or equal to the first difference threshold.
Optionally, the air conditioner includes a compressor and an inner fan, and when an absolute value of a difference between the first detected concentration and the second detected concentration is greater than a first difference threshold, preheating the first air-sensitive sensor until the absolute value of the difference between the first detected concentration and the second detected concentration is less than or equal to the first difference threshold includes: under the condition that the absolute value of the difference value between the first detection concentration and the second detection concentration is larger than the first difference threshold value, locking the compressor and the inner fan; repeatedly executing the following steps until the absolute value of the difference between the updated first detected concentration and the updated second detected concentration is less than or equal to the first difference threshold: preheating the first gas-sensitive sensor until the preheating time reaches a preset time; acquiring the detection concentration of the first gas sensor to update the first detection concentration, and acquiring the detection concentration of the second gas sensor to update the second detection concentration; and under the condition that the absolute value of the difference value between the updated first detection concentration and the updated second detection concentration is smaller than or equal to the first difference threshold value, unlocking the compressor and the inner fan.
Optionally, in a case that the first detected concentration is greater than the second detected concentration and the second detected concentration is greater than a concentration threshold, before sending out first warning information, the method further includes: sending a replacement prompt message under the condition that the absolute value of the difference value between the first detection concentration and the second detection concentration is greater than a second difference threshold value, wherein the replacement prompt message is a prompt message for replacing the first gas sensor; and under the condition that the absolute value of the difference value between the first detection concentration and the second detection concentration is smaller than or equal to the second difference threshold, correcting a compensation parameter of the first gas-sensitive sensor according to the second detection concentration, wherein the compensation parameter is the difference value between a real value and a measured value.
Optionally, after obtaining the detection concentration of the first gas sensor to obtain a first detection concentration, and obtaining the detection concentration of the second gas sensor to obtain a second detection concentration, the method further includes: preheating the first gas sensor until the absolute value of the difference between the first detected concentration and the second detected concentration is less than or equal to a first difference threshold value when the absolute value of the difference between the first detected concentration and the second detected concentration is greater than the first difference threshold value; continuously acquiring the detection concentration of the first gas sensor to obtain a third detection concentration, and acquiring the detection concentration of the second gas sensor to obtain a fourth detection concentration; and sending the replacement prompt message when the absolute value of the difference value between the third detection concentration and the fourth detection concentration is greater than the second difference threshold value.
According to another aspect of the embodiments of the present invention, there is also provided an apparatus for determining refrigerant leakage of an air conditioner, the air conditioner including an indoor unit and a remote controller, the indoor unit including a first gas sensor, the remote controller including a second gas sensor, the first gas sensor and the second gas sensor being configured to detect a concentration of an air-conditioning refrigerant in air, the apparatus including: the first acquisition unit is used for acquiring the detection concentration of the first gas sensor to obtain a first detection concentration, and acquiring the detection concentration of the second gas sensor to obtain a second detection concentration; and the processing unit is used for sending first alarm information under the condition that the first detection concentration is greater than the second detection concentration and the second detection concentration is greater than a concentration threshold value, wherein the first alarm information is prompt information for prompting the air conditioner to leak the refrigerant.
According to yet another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium including a stored program, wherein when the program is executed by a processor, the processor performs any one of the methods.
According to still another aspect of the embodiments of the present invention, there is also provided an air conditioner including: an indoor unit, a remote control, one or more processors, a memory, and one or more programs, wherein the indoor unit comprises a first gas sensor, the remote control comprises a second gas sensor, the first and second gas sensors are configured to detect a concentration of a refrigerant in air, the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing any of the methods.
In an embodiment of the present invention, in the method for determining refrigerant leakage of an air conditioner, first, a detection concentration of the first gas sensor is obtained to obtain a first detection concentration, and a detection concentration of the second gas sensor is obtained to obtain a second detection concentration; and then, when the first detection concentration is greater than the second detection concentration and the second detection concentration is greater than a concentration threshold value, sending first alarm information, wherein the first alarm information is prompt information for prompting the air conditioner to generate refrigerant leakage. According to the method, the concentration of the air-conditioning refrigerant in the air is detected through the first air-sensitive sensor of the indoor unit and the second air-sensitive sensor of the remote controller, so that a first detection concentration and a second detection concentration are obtained, the first detection concentration is greater than the second detection concentration, the indoor unit is indicated as a leakage source, the concentration threshold value is indicated as a second detection concentration, the leakage concentration of the space where the air conditioner is located exceeds the concentration threshold value, the air-conditioning refrigerant leakage is determined to occur, the condition that the detection concentration exceeds the concentration threshold value due to indoor use of floral water or spraying of alcohol disinfectant is eliminated, false alarm is avoided, and the problem that the reliability of air-conditioning refrigerant leakage detection in the prior art is poor is solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
FIG. 1 shows a graph of the sensitivity of a gas sensor in the prior art to a variety of other sensitivities;
fig. 2 is a flowchart illustrating a method of determining refrigerant leakage of an air conditioner according to an embodiment of the present application;
fig. 3 is a flowchart illustrating a method for determining leakage of air conditioning refrigerant according to another embodiment of the present application;
FIG. 4 shows a flow diagram of aging calibration according to another embodiment of the present application;
FIG. 5 shows a flow diagram of gas sensor failure detection according to another embodiment of the present application;
fig. 6 is a view illustrating a matter of an apparatus for determining leakage of refrigerant of air conditioner according to an embodiment of the present application.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Also, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.
As mentioned in the background of the invention, in order to solve the above-mentioned problems, in the prior art, the reliability of air conditioner refrigerant leakage detection is poor, and in an exemplary embodiment of the present application, a method for determining air conditioner refrigerant leakage, a determining device, a computer readable storage medium and an air conditioner are provided.
According to an embodiment of the application, the air conditioner comprises an indoor unit and a remote controller, the indoor unit comprises a first gas sensor, the remote controller comprises a second gas sensor, and the first gas sensor and the second gas sensor are used for detecting the concentration of air-conditioning refrigerants in the air.
Fig. 2 is a flowchart of a method for determining refrigerant leakage of an air conditioner according to an embodiment of the present application. As shown in fig. 2, the method comprises the steps of:
step S101, obtaining the detection concentration of the first gas sensor to obtain a first detection concentration, and obtaining the detection concentration of the second gas sensor to obtain a second detection concentration;
in order to further ensure the detection accuracy, in an alternative embodiment, before obtaining the detection concentration of the first gas sensor to obtain a first detection concentration, and obtaining the detection concentration of the second gas sensor to obtain a second detection concentration, the method further includes:
step S201, initializing the first gas sensor and the second gas sensor.
In the above embodiment, before detecting the concentration of the leaked air-conditioning refrigerant, the sensor is initialized to ensure the detection accuracy and avoid false alarm caused by excessive error.
And step S102, sending first alarm information under the condition that the first detection concentration is greater than the second detection concentration and the second detection concentration is greater than a concentration threshold value, wherein the first alarm information is prompt information for prompting the air conditioner to generate refrigerant leakage.
Optionally, the present invention does not limit the specific process of sending out the first alarm information when the first detected concentration is greater than the second detected concentration and the second detected concentration is greater than the concentration threshold, and any feasible manner is within the protection scope of the present invention.
For example, in an alternative embodiment, as shown in fig. 3, the step S102 includes:
a step S1021 of generating the first alarm information when the first detected density is greater than the density threshold;
step S1022, in a case where second alarm information sent by the remote controller is received, determining whether the first detected concentration is greater than the second detected concentration, where the second alarm information is used to prompt that the second detected concentration is greater than the concentration threshold;
step S1023, when the first detected concentration is greater than the second detected concentration, the first alarm information is sent out.
In the above embodiment, when the first detection concentration Q1 is greater than the concentration threshold, the first alarm message is generated, which indicates that the first alarm message E1 is not sent in the air in order to avoid misjudgment caused by spraying floral water (containing alcohol) or opening electric mosquito repellent liquid (containing pyrethrin and alcohol) for a long time, and when the second detection concentration Q2 detected by the second gas sensor is greater than the concentration threshold, the second alarm message E2 is sent to the indoor unit, otherwise, the first alarm message E1 is not sent, and when the second alarm message E2 sent by the remote controller is received, whether the first detection concentration Q1 is greater than the second detection concentration Q2 needs to be judged, and if so, the source of the detected gas leakage is the indoor unit or other places, the possibility that the first detection concentration is greater than the concentration threshold caused by spraying floral water or opening electric mosquito repellent liquid for a long time is further excluded, and then the first alarm message is sent to prompt that the air conditioner has refrigerant leakage, so that the reliability and accuracy of leakage alarm are improved, and safety accidents are avoided in time.
To further avoid false alarm, in an optional implementation, after determining whether the first detected concentration is greater than the second detected concentration, the method further includes:
step S1024, judging whether the triggering time of the first alarm information is earlier than the triggering time of the second alarm information;
step S1025 is to generate the first alarm information when the first detected density is greater than the second detected density and the trigger time of the first alarm information is earlier than the trigger time of the second alarm information.
In the above embodiment, by determining whether the triggering time of the first alarm information E1 is earlier than the triggering time of the second alarm information E2, if so, it is further determined that the source of the detected gas leakage is an indoor unit, and not another place, so that the possibility of erroneous determination is further reduced, and the reliability and accuracy of the refrigerant leakage alarm are further improved.
In order to reduce the detection error of the gas sensor, in an alternative embodiment, before the sending of the first alarm information when the first detected concentration is greater than the second detected concentration and the second detected concentration is greater than the concentration threshold, the method further includes:
step S301, in a case where an absolute value of a difference between the first detected concentration and the second detected concentration is greater than a first difference threshold, preheating the first gas sensor until the absolute value of the difference between the first detected concentration and the second detected concentration is less than or equal to the first difference threshold.
In the above embodiment, when the air conditioner is powered off for a long time when a user goes out or due to other reasons, the sensor needs to be aged and preheated for a long time before restarting to use, the approximate time relationship between the power-off time and the aging preheating is shown in table 1, the degree of resistance drift inside the sensor changes with different use environments, the accurate time of the sensor needing to be electrified and preheated and aged cannot be determined, the first gas sensor is preheated until the absolute value of the difference between the first detection concentration and the second detection concentration is less than or equal to the first difference threshold, the completion of the aging calibration can be determined, the detection error of the gas sensor is further reduced through the aging calibration, the possibility of erroneous judgment is further reduced, and the reliability and the accuracy of the refrigerant leakage alarm are further improved.
TABLE 1
| Time of power down | Predicted aged preheat time |
| Within 1 month | ≥ |
| 1 to 6 months | ≥72h |
| For more than 6 months | ≥168h |
In order to improve the efficiency of the warm-up aging calibration, in an alternative embodiment, the air conditioner includes a compressor and an inner fan, as shown in fig. 4, and the step S301 includes:
step S3011, locking the compressor and the inner fan when an absolute value of a difference between the first detected density and the second detected density is greater than the first difference threshold;
step S3012, repeatedly executing the following steps until an absolute value of a difference between the updated first detected concentration and the updated second detected concentration is less than or equal to the first difference threshold: preheating the first gas-sensitive sensor until the preheating time reaches the preset time; acquiring the detection concentration of the first gas sensor to update the first detection concentration, and acquiring the detection concentration of the second gas sensor to update the second detection concentration;
and step S3013, unlocking the compressor and the inner fan when an absolute value of a difference between the updated first detected concentration and the updated second detected concentration is less than or equal to the first difference threshold.
In the above embodiment, after the user starts the preheating calibration mode through the remote controller, the remote controller transmits data Q2 detected by the gas sensor to the indoor unit once every hour, that is, the second detection concentration Q2, during which the compressor is locked when the indoor unit is in the detection state, and the sensor of the indoor unit is read once after the indoor unit operates to receive data every time, so as to obtain the first detection concentration Q1, and compare the read data Q1 with the received data Q2. And if the detection difference value meets the requirement that the detection difference value is larger than the first difference value threshold value D1, continuing to run the calibration program, if the detection difference value meets the requirement that the detection difference value is smaller than or equal to the first difference value threshold value D1, jumping out of the calibration program to prompt a user to finish preheating, unlocking the compressor and the inner fan, preheating for multiple times in a segmented mode, detecting and judging whether aging calibration is finished or not, reducing the detection and judgment times, and improving the efficiency.
Furthermore, the corresponding predicted aging preheating time can be obtained by looking up the table 1 according to the power-down time, the predicted aging preheating time is preset, and then the absolute value of the difference value between the first detection concentration and the second detection concentration is judged to be larger than the first difference threshold, so that the detection and judgment times are reduced, the process is simplified, and the efficiency is improved.
In order to ensure the reliability of the air-conditioning refrigerant leakage detection, in an alternative embodiment, as shown in fig. 5, before sending a first alarm message when the first detected concentration is greater than the second detected concentration and the second detected concentration is greater than a concentration threshold, the method further includes:
step S401, sending out replacement prompt information under the condition that the absolute value of the difference value between the first detection concentration and the second detection concentration is larger than a second difference value threshold value, wherein the replacement prompt information is prompt information for replacing the first gas sensor;
step S402, when the absolute value of the difference between the first detected concentration and the second detected concentration is smaller than or equal to the second difference threshold, correcting a compensation parameter of the first air sensor according to the second detected concentration, where the compensation parameter is a difference between a true value and a measured value.
In the above embodiment, in a normal situation, the automatic verification program is started first when the air conditioner is started every time, and it is detected whether the R290 sensor in the indoor unit of the air conditioner fails or is inaccurate to detect due to dust deposition in the air conditioner or long-term power failure, the remote controller sends a frame of detection data of the second gas sensor, i.e., the second detection concentration Q2, to the indoor unit when the air conditioner is started, the indoor unit receives the detection data, i.e., the first detection concentration Q1, and reads the read data, if the difference between Q1 and Q2 is smaller than the second difference threshold D2, the sensor data compensation parameters of the indoor unit are corrected according to the data sent by the remote controller, if the difference between Q1 and Q2 is larger than the second difference threshold D2, the indoor unit returns to a standby state and prompts a user to replace the sensor, and it is avoided that a leakage alarm cannot be realized due to sensor failure, so that a safety accident occurs.
It should be noted that two sensors a of the same type are used in clean air 1 And a 2 The theoretical value of the output should be 0, and actually a is in clean air due to the difference of the internal resistance values of the sensors 1 Has an output value of 0-C 1 ，a 2 Has an output value of 0-C 2 (ii) a Thus, in the program, the actual concentration value = measured value + compensation parameter C, and the detection concentration correction here means correction based on the first detection concentration and the second detection concentrationThe difference in concentration modifies the compensation parameter C.
In order to reduce the reject rate of the sensor, in an alternative embodiment, after obtaining the detection concentration of the first gas sensor to obtain a first detection concentration, and obtaining the detection concentration of the second gas sensor to obtain a second detection concentration, the method further includes:
step S501, in a case where an absolute value of a difference between the first detected concentration and the second detected concentration is greater than a first difference threshold, preheating the first gas sensor until the absolute value of the difference between the first detected concentration and the second detected concentration is less than or equal to the first difference threshold;
step S502, continuously acquiring the detection concentration of the first gas sensor to obtain a third detection concentration, and acquiring the detection concentration of the second gas sensor to obtain a fourth detection concentration;
in step S503, when the absolute value of the difference between the third detected density and the fourth detected density is greater than the second difference threshold, the replacement prompt message is issued.
In the above embodiment, when the absolute value of the difference between the first detected concentration and the second detected concentration is greater than a first difference threshold, the first air-sensitive sensor is preheated until the absolute value of the difference between the first detected concentration and the second detected concentration is less than or equal to the first difference threshold, that is, aging calibration is performed first to avoid inaccurate failure determination due to resistance drift and reduce elimination rate, and then whether the first air-sensitive sensor fails is detected, and when the absolute value of the difference between the third detected concentration and the fourth detected concentration is greater than the second difference threshold, it is determined that the first air-sensitive sensor fails to perform failure, the prompt information is sent out to replace the failed sensor in time, thereby avoiding a safety accident caused by refrigerant leakage failing to detect.
In the method for determining the refrigerant leakage of the air conditioner, firstly, the detection concentration of the first gas sensor is obtained to obtain a first detection concentration, and the detection concentration of the second gas sensor is obtained to obtain a second detection concentration; and then, when the first detection concentration is greater than the second detection concentration and the second detection concentration is greater than a concentration threshold value, sending first alarm information, wherein the first alarm information is prompt information for prompting the air conditioner to generate refrigerant leakage. According to the method, the concentration of the air-conditioning refrigerant in the air is detected through the first air-sensitive sensor of the indoor unit and the second air-sensitive sensor of the remote controller, so that a first detection concentration and a second detection concentration are obtained, the first detection concentration is greater than the second detection concentration, the indoor unit is indicated as a leakage source, the concentration threshold value is indicated as a second detection concentration, the leakage concentration of the space where the air conditioner is located exceeds the concentration threshold value, the air-conditioning refrigerant leakage is determined to occur, the condition that the detection concentration exceeds the concentration threshold value due to indoor use of floral water or spraying of alcohol disinfectant is eliminated, false alarm is avoided, and the problem that the reliability of air-conditioning refrigerant leakage detection in the prior art is poor is solved.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than here.
The embodiment of the present application further provides a device for determining air-conditioning refrigerant leakage, and it should be noted that the device for determining air-conditioning refrigerant leakage according to the embodiment of the present application may be used to execute the method for determining air-conditioning refrigerant leakage according to the embodiment of the present application. The device for determining refrigerant leakage of an air conditioner provided by the embodiment of the present application is introduced below, where the air conditioner includes an indoor unit and a remote controller, the indoor unit includes a first gas sensor, the remote controller includes a second gas sensor, and the first gas sensor and the second gas sensor are used to detect the concentration of a refrigerant in air.
Fig. 6 is a schematic diagram of an apparatus for determining leakage of air-conditioning refrigerant according to an embodiment of the present application. As shown in fig. 6, the apparatus includes:
a first obtaining unit 10, configured to obtain a detection concentration of the first gas sensor to obtain a first detection concentration, and obtain a detection concentration of the second gas sensor to obtain a second detection concentration;
in order to further ensure the accuracy of the detection, in an alternative embodiment, the apparatus further includes:
and an initializing unit configured to initialize the first gas sensor and the second gas sensor before obtaining the detection concentration of the first gas sensor to obtain a first detection concentration and obtaining the detection concentration of the second gas sensor to obtain a second detection concentration.
In the above embodiment, before detecting the concentration of the leaked air-conditioning refrigerant, the sensor is initialized to ensure the detection accuracy and avoid false alarm caused by excessive error.
And the processing unit 20 is configured to send first alarm information when the first detection concentration is greater than the second detection concentration and the second detection concentration is greater than a concentration threshold, where the first alarm information is a prompt message for prompting that the air conditioner has refrigerant leakage.
Optionally, the present invention does not limit a specific process of sending out the first alarm information when the first detected concentration is greater than the second detected concentration and the second detected concentration is greater than the concentration threshold, and any feasible manner is within the protection scope of the present invention.
For example, in an alternative embodiment, as shown in fig. 3, the processing unit includes:
a generating module, configured to generate the first alarm information when the first detected concentration is greater than the concentration threshold;
a determining module, configured to determine whether the first detection concentration is greater than the second detection concentration when second alarm information sent by the remote controller is received, where the second alarm information is used to prompt that the second detection concentration is greater than the concentration threshold;
and the sending module is used for sending the first alarm information under the condition that the first detection concentration is greater than the second detection concentration.
In the above embodiment, when the first detection concentration Q1 is greater than the concentration threshold, the first alarm message is generated, which indicates that the first alarm message is not sent first in the air, in order to avoid misjudgment caused by spraying floral water (containing alcohol) or opening electric mosquito repellent liquid (containing pyrethrin and alcohol) for a long time, when the second detection concentration Q2 detected by the second gas sensor is greater than the concentration threshold, the second alarm message is sent to the indoor unit, otherwise, the first alarm message is not sent, and when the second alarm message sent by the remote controller is received, whether the first detection concentration Q1 is greater than the second detection concentration Q2 needs to be determined, if yes, it indicates that the source of the detected gas leakage is the indoor unit or not, and if not, the possibility that the first detection concentration is greater than the concentration threshold caused by spraying floral water or opening electric mosquito repellent liquid for a long time is further eliminated, and then the first alarm message is sent to prompt the air conditioner to leak, so that the reliability and accuracy of the leakage alarm are improved, and safety accidents are avoided in time.
To further avoid false alarms, in an alternative embodiment, the apparatus further comprises:
a determination unit configured to determine whether or not a trigger timing of the first alarm information is earlier than a trigger timing of the second alarm information after determining whether or not the first detected concentration is greater than the second detected concentration;
and a first transmission unit configured to transmit the first alarm information when the first detected density is greater than the second detected density and a trigger timing of the first alarm information is earlier than a trigger timing of the second alarm information.
In the above embodiment, by determining whether the triggering time of the first alarm information is earlier than the triggering time of the second alarm information, if so, it is further determined that the source of the detected gas leakage is an indoor unit, and not another place, so that the possibility of misjudgment is further reduced, and the reliability and accuracy of the refrigerant leakage alarm are further improved.
In order to reduce the detection error of the gas sensor, in an alternative embodiment, the apparatus further includes:
a first preheating unit, configured to preheat the first gas sensor until an absolute value of a difference between the first detected concentration and the second detected concentration is smaller than or equal to a first difference threshold when an absolute value of a difference between the first detected concentration and the second detected concentration is larger than the first difference threshold before first alarm information is sent when the first detected concentration is larger than the second detected concentration and the second detected concentration is larger than a concentration threshold.
In the above embodiment, when the air conditioner is powered off for a long time when a user goes out or due to other reasons, the sensor needs to be aged and preheated for a long time before restarting to use, the approximate time relationship between the power-off time and the aging preheating is shown in table 1, the degree of resistance drift inside the sensor changes with different use environments, the accurate time of the sensor needing to be electrified and preheated and aged cannot be determined, the first gas sensor is preheated until the absolute value of the difference between the first detection concentration and the second detection concentration is less than or equal to the first difference threshold, the completion of the aging calibration can be determined, the detection error of the gas sensor is further reduced through the aging calibration, the possibility of erroneous judgment is further reduced, and the reliability and the accuracy of the refrigerant leakage alarm are further improved.
In order to improve the efficiency of the warm-up aging calibration, in an alternative embodiment, the air conditioner includes a compressor and an inner fan, as shown in fig. 4, and the warm-up unit includes:
a first processing module, configured to lock the compressor and the internal fan when an absolute value of a difference between the first detected concentration and the second detected concentration is greater than the first difference threshold;
a repeating module, configured to repeatedly perform the following steps until an absolute value of a difference between the updated first detected concentration and the updated second detected concentration is less than or equal to the first difference threshold: preheating the first gas-sensitive sensor until the preheating time reaches the preset time; acquiring the detection concentration of the first gas sensor to update the first detection concentration, and acquiring the detection concentration of the second gas sensor to update the second detection concentration;
and the second processing module is used for unlocking the compressor and the inner fan under the condition that the absolute value of the difference value between the updated first detection concentration and the updated second detection concentration is smaller than or equal to the first difference threshold value.
In the above embodiment, after the user starts the preheating calibration mode by the remote controller, the remote controller transmits the data Q2 detected by the gas sensor to the indoor unit once every hour, that is, the second detection concentration Q2, during which, when the indoor unit is in the detection state, the compressor is locked and the operating indoor unit of the internal fan receives data once, and then data reading is performed on the sensor of the indoor unit to obtain the first detection concentration Q1, and the read data Q1 is compared with the received data Q2. And if the detection difference value meets the requirement that the detection difference value is larger than the first difference value threshold value D1, continuing to run the calibration program, if the detection difference value meets the requirement that the detection difference value is smaller than or equal to the first difference value threshold value D1, jumping out of the calibration program to prompt a user to finish preheating, unlocking the compressor and the inner fan, preheating for multiple times in a segmented mode, detecting and judging whether aging calibration is finished or not, reducing the detection and judgment times, and improving the efficiency.
Furthermore, the corresponding predicted aging preheating time can be obtained by looking up the table 1 according to the power-down time, the predicted aging preheating time is preset, and then the absolute value of the difference value between the first detection concentration and the second detection concentration is judged to be larger than the first difference threshold, so that the detection and judgment times are reduced, the process is simplified, and the efficiency is improved.
In order to ensure the reliability of the detection of the refrigerant leakage of the air conditioner, in an alternative embodiment, as shown in fig. 5, the apparatus further includes:
a presentation unit configured to, before first alarm information is issued when the first detected concentration is greater than the second detected concentration and the second detected concentration is greater than a concentration threshold, issue replacement notification information when an absolute value of a difference between the first detected concentration and the second detected concentration is greater than a second difference threshold, the replacement notification information being notification information for replacing the first gas sensor;
a correcting unit configured to correct a compensation parameter of the first gas sensor based on the second detected concentration when an absolute value of a difference between the first detected concentration and the second detected concentration is less than or equal to the second difference threshold.
In the above embodiment, in a normal situation, the automatic verification program is started first when the air conditioner is started every time, and it is detected whether the R290 sensor in the indoor unit of the air conditioner fails or is inaccurate to detect due to dust deposition in the air conditioner or long-term power failure, the remote controller sends a frame of detection data of the second gas sensor, i.e., the second detection concentration Q2, to the indoor unit when the air conditioner is started, the indoor unit receives the detection data, i.e., the first detection concentration Q1, and reads the read data, if the difference between Q1 and Q2 is smaller than the second difference threshold D2, the sensor data compensation parameters of the indoor unit are corrected according to the data sent by the remote controller, if the difference between Q1 and Q2 is larger than the second difference threshold D2, the indoor unit returns to a standby state and prompts a user to replace the sensor, and it is avoided that a leakage alarm cannot be realized due to sensor failure, so that a safety accident occurs.
It should be noted that two sensors a of the same type are used in clean air 1 And a 2 The theoretical value of the output should be 0, and actually a is in clean air due to the difference of the internal resistance values of the sensors 1 Has an output value of 0-C 1 ，a 2 Has an output value of 0-C 2 (ii) a Therefore, in the program, the actual concentration value = measured value + compensation parameter C, and the detection concentration correction here means to modify the compensation parameter C according to the difference between the first detection concentration and the second detection concentration.
In order to reduce the rejection rate of the sensor, in an alternative embodiment, the apparatus further comprises:
a second preheating unit, configured to, after obtaining the detection concentration of the first gas sensor, obtain a first detection concentration, obtain the detection concentration of the second gas sensor, and obtain a second detection concentration, preheat the first gas sensor until an absolute value of a difference between the first detection concentration and the second detection concentration is smaller than or equal to a first difference threshold when an absolute value of a difference between the first detection concentration and the second detection concentration is larger than the first difference threshold;
a second obtaining unit, configured to continue to obtain the detection concentration of the first gas sensor to obtain a third detection concentration, and obtain the detection concentration of the second gas sensor to obtain a fourth detection concentration;
and a second sending unit configured to send the replacement prompt message when an absolute value of a difference between the third detected density and the fourth detected density is greater than the second difference threshold.
In the above embodiment, when the absolute value of the difference between the first detected concentration and the second detected concentration is greater than a first difference threshold, the first air-sensitive sensor is preheated until the absolute value of the difference between the first detected concentration and the second detected concentration is less than or equal to the first difference threshold, that is, aging calibration is performed first to avoid inaccurate failure determination due to resistance drift and reduce elimination rate, and then whether the first air-sensitive sensor fails is detected, and when the absolute value of the difference between the third detected concentration and the fourth detected concentration is greater than the second difference threshold, it is determined that the first air-sensitive sensor fails to perform failure, the prompt information is sent out to replace the failed sensor in time, thereby avoiding a safety accident caused by refrigerant leakage failing to detect.
In the device for determining the refrigerant leakage of the air conditioner, an acquisition unit acquires the detection concentration of the first gas sensor to obtain a first detection concentration, and acquires the detection concentration of the second gas sensor to obtain a second detection concentration; and the processing unit sends out first alarm information under the condition that the first detection concentration is greater than the second detection concentration and the second detection concentration is greater than a concentration threshold, wherein the first alarm information is prompt information for prompting the air conditioner to generate refrigerant leakage. The determining device detects the concentration of air conditioning refrigerants in air through a first air-sensitive sensor of an indoor unit and a second air-sensitive sensor of a remote controller, and obtains a first detection concentration and a second detection concentration, wherein the first detection concentration is greater than the second detection concentration, the leakage source is the indoor unit, the second detection concentration is greater than a concentration threshold value, the leakage concentration of a space where an air conditioner is located exceeds the concentration threshold value, the leakage of the air conditioning refrigerants is determined to occur, the condition that the detection concentration exceeds the concentration threshold value due to indoor use of floral water or spraying of alcohol disinfectant is eliminated, false alarm is avoided, and the problem that the reliability of air conditioning refrigerant leakage detection in the prior art is poor is solved.
The embodiment of the present application further provides an air conditioner, including: the air conditioner comprises an indoor unit, a remote controller, one or more processors, a memory and one or more programs, wherein the indoor unit comprises a first gas sensor, the remote controller comprises a second gas sensor, the first gas sensor and the second gas sensor are used for detecting the concentration of air conditioning refrigerant in the air, the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs comprise a program for executing the method.
The air conditioner comprises an indoor unit and a remote controller, wherein the indoor unit comprises a first air-sensitive sensor, the remote controller comprises a second air-sensitive sensor, the first air-sensitive sensor and the second air-sensitive sensor are used for detecting the concentration of an air-conditioning refrigerant in the air, the air conditioner detects the concentration of the air-conditioning refrigerant in the air through the first air-sensitive sensor of the indoor unit and the second air-sensitive sensor of the remote controller to obtain a first detection concentration and a second detection concentration, the first detection concentration is greater than the second detection concentration, the leakage source is indicated to be the indoor unit, the second detection concentration is greater than a concentration threshold, the leakage concentration of a space where the air conditioner is located exceeds the concentration threshold, the leakage of the air-conditioning refrigerant is determined, the condition that the detection concentration exceeds the concentration threshold due to the fact that indoor toilet water is used or alcohol disinfectant is sprayed is eliminated, false alarm is avoided, and the problem that the reliability of air-conditioning refrigerant leakage detection in the prior art is poor is solved.
The device for determining the leakage of the air-conditioning refrigerant comprises a processor and a memory, wherein the first acquiring unit, the processing unit and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to be one or more than one, and the problem of poor reliability of air conditioner refrigerant leakage detection in the prior art is solved by adjusting kernel parameters.
The memory may include volatile memory in a computer readable medium, random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), including at least one memory chip.
An embodiment of the present invention provides a computer-readable storage medium, on which a program is stored, which when executed by a processor implements the above-described method.
The embodiment of the invention provides a processor, which is used for running a program, wherein the method is executed when the program runs.
The embodiment of the invention provides equipment, which comprises a processor, a memory and a program which is stored on the memory and can run on the processor, wherein when the processor executes the program, at least the following steps are realized:
step S101, obtaining the detection concentration of the first gas sensor to obtain a first detection concentration, and obtaining the detection concentration of the second gas sensor to obtain a second detection concentration;
and step S102, sending first alarm information under the condition that the first detection concentration is greater than the second detection concentration and the second detection concentration is greater than a concentration threshold value, wherein the first alarm information is prompt information for prompting the air conditioner to generate refrigerant leakage.
The device herein may be a server, a PC, a PAD, a mobile phone, etc.
The present application further provides a computer program product adapted to perform a program of initializing at least the following method steps when executed on a data processing device:
step S101, acquiring the detection concentration of the first gas sensor to obtain a first detection concentration, and acquiring the detection concentration of the second gas sensor to obtain a second detection concentration;
and step S102, sending first alarm information under the condition that the first detection concentration is greater than the second detection concentration and the second detection concentration is greater than a concentration threshold value, wherein the first alarm information is prompt information for prompting the air conditioner to generate refrigerant leakage.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described apparatus embodiments are merely illustrative, and for example, the division of the above-described units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit may be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as a separate product. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a computer-readable storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned computer-readable storage media comprise: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:
1) The method for determining the refrigerant leakage of the air conditioner comprises the steps of firstly, obtaining the detection concentration of the first gas sensor to obtain a first detection concentration, and obtaining the detection concentration of the second gas sensor to obtain a second detection concentration; and then, when the first detection concentration is greater than the second detection concentration and the second detection concentration is greater than a concentration threshold value, sending first alarm information, wherein the first alarm information is prompt information for prompting the air conditioner to generate refrigerant leakage. The method comprises the steps of detecting the concentration of an air conditioning refrigerant in the air through a first air-sensitive sensor of an indoor unit and a second air-sensitive sensor of a remote controller to obtain a first detection concentration and a second detection concentration, wherein the first detection concentration is greater than the second detection concentration, the leakage source is the indoor unit, the second detection concentration is greater than a concentration threshold value, the leakage concentration of a space where the air conditioner is located exceeds the concentration threshold value, the air conditioning refrigerant leakage is determined to occur, the condition that the detection concentration exceeds the concentration threshold value due to indoor use of floral water or spraying of alcohol disinfectant is eliminated, false alarm is avoided, and the problem that the reliability of air conditioning refrigerant leakage detection in the prior art is poor is solved.
2) In the device for determining refrigerant leakage of the air conditioner, the acquisition unit acquires the detection concentration of the first gas sensor to obtain a first detection concentration, and acquires the detection concentration of the second gas sensor to obtain a second detection concentration; and the processing unit sends out first alarm information under the condition that the first detection concentration is greater than the second detection concentration and the second detection concentration is greater than a concentration threshold, wherein the first alarm information is prompt information for prompting the air conditioner to generate refrigerant leakage. The determining device detects the concentration of air conditioning refrigerants in air through a first air-sensitive sensor of an indoor unit and a second air-sensitive sensor of a remote controller, and obtains a first detection concentration and a second detection concentration, wherein the first detection concentration is greater than the second detection concentration, the leakage source is the indoor unit, the second detection concentration is greater than a concentration threshold value, the leakage concentration of a space where an air conditioner is located exceeds the concentration threshold value, the leakage of the air conditioning refrigerants is determined to occur, the condition that the detection concentration exceeds the concentration threshold value due to indoor use of floral water or spraying of alcohol disinfectant is eliminated, false alarm is avoided, and the problem that the reliability of air conditioning refrigerant leakage detection in the prior art is poor is solved.
3) The utility model provides an in the air conditioner, including indoor set and remote controller, above-mentioned indoor set includes first air sensor, above-mentioned remote controller includes the second gas sensor, above-mentioned first air sensor and above-mentioned second gas sensor are used for detecting the concentration of air conditioning refrigerant in the air, this air conditioner passes through the concentration of air conditioning refrigerant in the first air sensor of indoor set and the detection of remote controller second gas sensor, obtain first detection concentration and second detection concentration, first detection concentration is greater than the second detection concentration, it is indoor set to show the source of leaking, the second detection concentration is greater than the concentration threshold value, it has surpassed the concentration threshold value to show the leakage concentration of air conditioner place space, confirm to take place air conditioning refrigerant to leak, the indoor use dew water or spray alcohol antiseptic solution lead to the detection concentration to surpassing the condition of concentration threshold value, the wrong report alarm has been avoided, the problem of air conditioning refrigerant leak detection's poor reliability among the prior art has been solved.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The method for determining the leakage of the air conditioning refrigerant is characterized in that the air conditioner comprises an indoor unit and a remote controller, the indoor unit comprises a first gas sensor, the remote controller comprises a second gas sensor, and the first gas sensor and the second gas sensor are used for detecting the concentration of the air conditioning refrigerant in the air, and the method comprises the following steps:
acquiring the detection concentration of the first gas sensor to obtain a first detection concentration, and acquiring the detection concentration of the second gas sensor to obtain a second detection concentration;
and sending first alarm information under the condition that the first detection concentration is greater than the second detection concentration and the second detection concentration is greater than a concentration threshold, wherein the first alarm information is prompt information for prompting the air conditioner to generate refrigerant leakage.
2. The method according to claim 1, wherein in the case that the first detected concentration is greater than the second detected concentration and the second detected concentration is greater than a concentration threshold, issuing a first warning message includes:
generating the first alarm information under the condition that the first detection concentration is greater than the concentration threshold value;
under the condition that second alarm information sent by the remote controller is received, judging whether the first detection concentration is greater than the second detection concentration, wherein the second alarm information is used for prompting that the second detection concentration is greater than the concentration threshold value; and sending out the first alarm information under the condition that the first detection concentration is greater than the second detection concentration.
3. The method of claim 2, wherein after determining whether the first detected concentration is greater than the second detected concentration, the method further comprises:
judging whether the triggering time of the first alarm information is earlier than the triggering time of the second alarm information;
and under the condition that the first detection concentration is greater than the second detection concentration and the triggering time of the first alarm information is earlier than that of the second alarm information, sending the first alarm information.
4. The method according to any one of claims 1 to 3, characterized in that in a case where the first detected concentration is greater than the second detected concentration and the second detected concentration is greater than a concentration threshold, before issuing a first warning message, the method further comprises:
and under the condition that the absolute value of the difference between the first detection concentration and the second detection concentration is greater than a first difference threshold, preheating the first gas sensor until the absolute value of the difference between the first detection concentration and the second detection concentration is less than or equal to the first difference threshold.
5. The method of claim 2, wherein the air conditioner comprises a compressor and an internal fan, and wherein in the event that the absolute value of the difference between the first detected concentration and the second detected concentration is greater than a first difference threshold, preheating the first air sensor until the absolute value of the difference between the first detected concentration and the second detected concentration is less than or equal to the first difference threshold comprises:
under the condition that the absolute value of the difference value between the first detection concentration and the second detection concentration is larger than the first difference threshold value, locking the compressor and the inner fan;
repeatedly executing the following steps until the absolute value of the difference between the updated first detected concentration and the updated second detected concentration is less than or equal to the first difference threshold: preheating the first gas-sensitive sensor until the preheating time reaches a preset time; acquiring the detection concentration of the first gas sensor to update the first detection concentration, and acquiring the detection concentration of the second gas sensor to update the second detection concentration;
and under the condition that the absolute value of the difference value between the updated first detection concentration and the updated second detection concentration is smaller than or equal to the first difference threshold value, unlocking the compressor and the inner fan.
6. The method according to any one of claims 1 to 3, characterized in that in a case where the first detected concentration is greater than the second detected concentration and the second detected concentration is greater than a concentration threshold, before issuing a first warning message, the method further comprises:
sending a replacement prompt message under the condition that the absolute value of the difference value between the first detection concentration and the second detection concentration is greater than a second difference threshold value, wherein the replacement prompt message is a prompt message for replacing the first gas sensor;
and under the condition that the absolute value of the difference value between the first detection concentration and the second detection concentration is smaller than or equal to the second difference threshold, correcting a compensation parameter of the first gas-sensitive sensor according to the second detection concentration, wherein the compensation parameter is the difference value between a real value and a measured value.
7. The method of claim 6, wherein after obtaining the detected concentration of the first gas sensor resulting in a first detected concentration and obtaining the detected concentration of the second gas sensor resulting in a second detected concentration, the method further comprises:
in a case where an absolute value of a difference between the first detected concentration and the second detected concentration is greater than a first difference threshold, preheating the first gas sensor until the absolute value of the difference between the first detected concentration and the second detected concentration is less than or equal to the first difference threshold;
continuously acquiring the detection concentration of the first gas sensor to obtain a third detection concentration, and acquiring the detection concentration of the second gas sensor to obtain a fourth detection concentration;
and sending the replacement prompt message when the absolute value of the difference value between the third detection concentration and the fourth detection concentration is greater than the second difference threshold value.
8. The utility model provides a confirming device of air conditioner refrigerant leakage which characterized in that, the air conditioner includes indoor set and remote controller, indoor set includes first gas sensor, the remote controller includes the second gas sensor, first gas sensor with the second gas sensor is used for detecting the concentration of air conditioning refrigerant in the air, the device includes:
the first acquisition unit is used for acquiring the detection concentration of the first gas sensor to obtain a first detection concentration, and acquiring the detection concentration of the second gas sensor to obtain a second detection concentration;
and the processing unit is used for sending first alarm information under the condition that the first detection concentration is greater than the second detection concentration and the second detection concentration is greater than a concentration threshold value, wherein the first alarm information is prompt information for prompting the air conditioner to generate refrigerant leakage.
9. A computer-readable storage medium, comprising a stored program, wherein the program, when executed by a processor, causes the processor to perform the method of any of claims 1 to 7.
10. An air conditioner, comprising: an indoor unit, a remote control, one or more processors, a memory, and one or more programs, wherein the indoor unit comprises a first gas sensor, the remote control comprises a second gas sensor, the first and second gas sensors are configured to detect a concentration of a refrigerant in air, the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing the method of any of claims 1-7.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11927377B2 (en) | 2014-09-26 | 2024-03-12 | Waterfurnace International, Inc. | Air conditioning system with vapor injection compressor |
| US11953239B2 (en) | 2018-08-29 | 2024-04-09 | Waterfurnace International, Inc. | Integrated demand water heating using a capacity modulated heat pump with desuperheater |
-
2022
- 2022-12-15 CN CN202211620258.2A patent/CN115978709A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11927377B2 (en) | 2014-09-26 | 2024-03-12 | Waterfurnace International, Inc. | Air conditioning system with vapor injection compressor |
| US11953239B2 (en) | 2018-08-29 | 2024-04-09 | Waterfurnace International, Inc. | Integrated demand water heating using a capacity modulated heat pump with desuperheater |
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