CN108344108B - Air conditioner applying electrochemical compressor and hydrogen leakage detection method and device - Google Patents
Air conditioner applying electrochemical compressor and hydrogen leakage detection method and device Download PDFInfo
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- CN108344108B CN108344108B CN201810102574.8A CN201810102574A CN108344108B CN 108344108 B CN108344108 B CN 108344108B CN 201810102574 A CN201810102574 A CN 201810102574A CN 108344108 B CN108344108 B CN 108344108B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/07—Details of compressors or related parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
- F25B2500/222—Detecting refrigerant leaks
Abstract
The invention discloses an air conditioner applying an electrochemical compressor and a method and a device for detecting hydrogen leakage, and belongs to the technical field of air conditioners. The detection method comprises the following steps: acquiring a first hydrogen output flow of a first hydrogen output pipeline of the electrochemical compressor, which is communicated with the first metal hydride heat exchanger, and a second hydrogen output flow of a second hydrogen output pipeline of the electrochemical compressor, which is communicated with the second metal hydride heat exchanger; comparing the absolute value of the difference between the first hydrogen output flow and the second hydrogen output flow with a preset flow deviation value; and determining whether the air conditioner has a hydrogen leakage fault according to the comparison result. The hydrogen leakage detection method provided by the invention can simply, directly and effectively determine whether the air conditioner has a hydrogen leakage fault or not through the comparison result of the flow difference value of the hydrogen conveying flow of the two hydrogen conveying pipelines and the set deviation value, is greatly helpful for the performance and the service life of the air conditioner using the electrochemical compressor, and can better ensure the safety of users.
Description
Technical Field
the invention relates to the technical field of air conditioners, in particular to an air conditioner applying an electrochemical compressor and a method and a device for detecting hydrogen leakage.
Background
At present, the electrochemical compressor technology has been gradually applied to the technical field of air conditioners, and the principle of the electrochemical compressor is as follows: operating by pumping protons through an ion exchange membrane located between two gas diffusion electrodes, the protons driving a non-fluorine refrigerant through the ion exchange membrane; after the refrigerant reaches the other side of the membrane, it is released at high pressure into the refrigeration cycle. In the air-conditioning structure adopting the electrochemical compressor, hydrogen is mostly used as a refrigerating medium, and the metal hydride is filled in the heat exchanger, and has the characteristics of hydrogen absorption and heat release and hydrogen desorption, so that the temperature of the air flowing through is increased or reduced in the hydrogen absorption or hydrogen desorption process of the metal hydride.
because the electrochemical compressor is a core component in the electrochemical air-conditioning system, if hydrogen leaks and runs for a long time due to hydrogen deficiency, the electrochemical compressor can cause irreversible damage to the hydrogen leakage; moreover, hydrogen is colorless and tasteless and is not easy to be perceived by users, but has flammable and explosive potential safety hazards, so whether the hydrogen is leaked or not is detected based on safety consideration of the users, and risks are avoided in time.
Disclosure of Invention
The invention provides an air conditioner applying an electrochemical compressor and a hydrogen leakage detection method and device, and aims to solve the problem of hydrogen leakage detection of the air conditioner applying the electrochemical compressor. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
according to a first aspect of the present invention, there is provided a hydrogen leakage detecting method of an air conditioner employing an electrochemical compressor, comprising:
Acquiring a first hydrogen output flow of a first hydrogen output pipeline of the electrochemical compressor, which is communicated with the first metal hydride heat exchanger, and a second hydrogen output flow of a second hydrogen output pipeline of the electrochemical compressor, which is communicated with the second metal hydride heat exchanger;
comparing the absolute value of the difference between the first hydrogen output flow and the second hydrogen output flow with a preset flow deviation value;
And determining whether the air conditioner has a hydrogen leakage fault according to the comparison result.
in an alternative embodiment, determining whether the air conditioner has a hydrogen leakage fault according to the comparison result includes:
If the absolute value of the flow difference value is larger than or equal to the flow deviation value, determining that the air conditioner has a hydrogen leakage fault;
and if the absolute value of the flow difference value is smaller than the flow deviation value, determining that the air conditioner has no hydrogen leakage fault.
in an alternative embodiment, obtaining a first hydrogen transfer flow rate of a first hydrogen transfer line of an electrochemical compressor in communication with a first metal hydride heat exchanger comprises: acquiring a hydrogen output flow mean value of a first hydrogen output pipeline of an electrochemical compressor, which is communicated with a first metal hydride heat exchanger, in a set flow direction set time period, and taking the mean value as a first hydrogen output flow;
obtaining a second hydrogen delivery flow rate of a second hydrogen delivery pipeline of the electrochemical compressor, which is communicated with the second metal hydride heat exchanger, and the method comprises the following steps: and acquiring the average value of the hydrogen output flow of a second hydrogen output pipeline of the electrochemical compressor, which is communicated with the second metal hydride heat exchanger, in the set flow direction within the set time period, and taking the average value as the second hydrogen output flow.
in an alternative embodiment, the hydrogen leak detection method further includes: and responding to the hydrogen leakage fault of the air conditioner, stopping the air conditioner, and pushing alarm information to a user.
according to a second aspect of the present invention, there is also provided a hydrogen leakage detecting apparatus of an air conditioner employing an electrochemical compressor, comprising:
the acquiring unit is used for acquiring a first hydrogen output flow of a first hydrogen output pipeline of the electrochemical compressor, which is communicated with the first metal hydride heat exchanger, and a second hydrogen output flow of a second hydrogen output pipeline of the electrochemical compressor, which is communicated with the second metal hydride heat exchanger;
The comparison unit is used for comparing the absolute value of the flow difference value of the first hydrogen conveying flow and the second hydrogen conveying flow with a preset flow deviation value;
And the determining unit is used for determining whether the air conditioner has hydrogen leakage faults or not according to the comparison result.
in an optional implementation manner, the determining unit is specifically configured to:
If the absolute value of the flow difference value is larger than or equal to the flow deviation value, determining that the air conditioner has a hydrogen leakage fault;
And if the absolute value of the flow difference value is smaller than the flow deviation value, determining that the air conditioner has no hydrogen leakage fault.
in an alternative embodiment, the obtaining unit comprises:
The first acquisition subunit is used for acquiring a hydrogen output flow average value of a first hydrogen output pipeline of the electrochemical compressor, which is communicated with the first metal hydride heat exchanger, in a set flow direction set time length and taking the hydrogen output flow average value as a first hydrogen output flow;
and the second obtaining subunit is used for obtaining a hydrogen output flow average value of a second hydrogen output pipeline of the electrochemical compressor, which is communicated with the second metal hydride heat exchanger, in a set flow direction set time length and taking the hydrogen output flow average value as a second hydrogen output flow.
In an alternative embodiment, the hydrogen leakage detecting device further includes: and the response unit is used for responding to the hydrogen leakage fault of the air conditioner, stopping the air conditioner and pushing alarm information to a user.
According to a third aspect of the present invention, there is also provided an air conditioner employing an electrochemical compressor, the air conditioner comprising an electrochemical compressor, a first metal hydride heat exchanger and a second metal hydride heat exchanger, the electrochemical compressor being connected to the first metal hydride heat exchanger through a first hydrogen transfer line and to the second metal hydride heat exchanger through a second hydrogen transfer line, the first metal hydride heat exchanger and the second metal hydride heat exchanger having chambers filled with metal hydride; the air conditioner further includes the hydrogen leakage detection device according to any one of the foregoing second aspects.
the technical scheme adopted by the invention has the beneficial effects that:
the hydrogen leakage detection method provided by the invention can simply, directly and effectively determine whether the air conditioner has a hydrogen leakage fault or not through the comparison result of the flow difference value of the hydrogen conveying flow of the two hydrogen conveying pipelines and the set deviation value, is not influenced by the hydrogen leakage, is environment-friendly and timely, can mainly detect and judge the hydrogen leakage problem of the electrochemical compressor in real time, is greatly helpful for the performance and the service life of the air conditioner using the electrochemical compressor, and can better ensure the safety of users.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural view illustrating an air conditioner of the present invention employing an electrochemical compressor according to an exemplary embodiment;
FIG. 2 is a first schematic flow diagram illustrating a hydrogen leak detection method of the present invention according to an exemplary embodiment;
FIG. 3 is a second schematic flow chart diagram illustrating a hydrogen leak detection method of the present invention according to one exemplary embodiment;
fig. 4 is a block diagram showing the configuration of the hydrogen leakage detecting apparatus of the present invention according to an exemplary embodiment;
fig. 5 is a block diagram ii showing the structure of the hydrogen leakage detection apparatus of the present invention according to an exemplary embodiment.
Detailed Description
the following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of embodiments of the invention encompasses the full ambit of the claims, as well as all available equivalents of the claims. Embodiments may be referred to herein, individually or collectively, by the term "invention" merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed. Herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. As for the methods, products and the like disclosed by the embodiments, the description is simple because the methods correspond to the method parts disclosed by the embodiments, and the related parts can be referred to the method parts for description.
Fig. 1 is a schematic structural view of an air conditioner employing an electrochemical compressor according to the present invention shown in an exemplary embodiment.
as shown in fig. 1, the air conditioner using an electrochemical compressor of the present invention includes an electrochemical compressor 1 and two metal hydride heat exchangers, wherein the two metal hydride heat exchangers include a first metal hydride heat exchanger 21 connected to a first port of the electrochemical compressor 1 through a first hydrogen transmission line 31, and a second metal hydride heat exchanger 22 connected to a second port of the electrochemical compressor 1 through a second hydrogen transmission line 32, and each metal hydride heat exchanger is filled with a metal hydride capable of absorbing/desorbing hydrogen.
the electrochemical compressor 1 is connected with a power supply, the power supply can apply a voltage in an opposite direction to the switching direction of the electrochemical compressor 1, when the power supply applies a voltage in a first direction to the electrochemical compressor 1, the electrochemical compressor 1 can drive hydrogen in the electrochemical compressor 1 to ionize and move in the electrolyte along the direction from the first port to the second port, at the moment, the first metal hydride heat exchanger 21 is in a hydrogen releasing stage, and the second metal hydride heat exchanger 22 is in a hydrogen absorbing stage; when the power supply applies a voltage in a second direction to the electrochemical compressor 1, the electrochemical compressor 1 can drive the hydrogen gas to move in the electrolyte along the second port towards the first port in an ionized manner, and at this time, the first metal hydride heat exchanger 21 is in a hydrogen absorption state, and the second metal hydride heat exchanger 22 is in a hydrogen discharge stage.
therefore, by switching the direction of the voltage applied to the electrochemical compressor 1 by the power supply, the flow direction of the hydrogen gas in the hydrogen gas flow path formed by the electrochemical compressor 1 and the two metal hydride heat exchangers can be switched, thereby realizing the heat absorption and release functions of the two metal hydride heat exchangers, respectively.
In the process of flowing hydrogen, hydrogen needs to flow through the electrochemical compressor 1, and therefore, the important point of the air conditioner applying the electrochemical compressor is to ensure that the electrochemical compressor 1 does not generate hydrogen leakage.
fig. 2 is a first flowchart illustrating a hydrogen leak detection method of the present invention according to an exemplary embodiment.
As shown in fig. 2, the present invention provides a hydrogen leakage detecting method of an air conditioner using an electrochemical compressor, including:
S201, acquiring a first hydrogen output flow of a first hydrogen output pipeline of an electrochemical compressor, which is communicated with a first metal hydride heat exchanger, and a second hydrogen output flow of a second hydrogen output pipeline of a second metal hydride heat exchanger;
in this embodiment, the first hydrogen transportation pipeline is provided with a first flow detection device, and the first flow detection device can be used for detecting flow data of hydrogen flowing through the first hydrogen transportation pipeline; similarly, a second flow detection device is arranged on the second hydrogen transportation pipeline and can be used for detecting the flow data of the hydrogen flowing through the second hydrogen transportation pipeline.
Here, in step S201, the obtained first hydrogen transportation flow rate of the electrochemical compressor communicating with the first metal hydride heat exchanger is the flow rate data of the hydrogen gas flowing through the first hydrogen transportation pipeline detected by the first flow rate detection device;
the obtained second hydrogen transportation flow of the electrochemical compressor communicated with the second metal hydride heat exchanger is the flow data of the hydrogen flowing through the second hydrogen transportation pipeline detected by the second flow detection device.
in an embodiment, the type of the first flow detection device and the second flow detection device includes, but is not limited to, a gas flow meter.
optionally, the first flow rate detection device may also be disposed at a first port of the electrochemical compressor connected to the first hydrogen transportation pipeline, and the second flow rate detection device may also be disposed at a second port of the electrochemical compressor connected to the second hydrogen transportation pipeline, where the detected flow rate data is substantially consistent with the flow rate data detected by the flow rate detection devices disposed on the first hydrogen transportation pipeline and the second hydrogen transportation pipeline.
s202, comparing the absolute value of the flow difference value of the first hydrogen conveying flow and the second hydrogen conveying flow with a preset flow deviation value;
In the air conditioning structure of the embodiment, the electrochemical compressor and the two metal hydrides form a closed hydrogen flow path, and the electrochemical compressor is driven by electricity to drive hydrogen to flow from the first metal hydride to the second metal hydride, or drive hydrogen to flow from the second metal hydride to the second metal hydride, so that in the stable hydrogen absorption and desorption stage of the metal hydrides of the metal hydride heat exchanger, the flow rate of hydrogen in and out of the electrochemical compressor is generally substantially equal, and if there is a difference between the flow rates of hydrogen in and out of the electrochemical compressor, i.e. the values of the flow rates of hydrogen in and out of the metal hydrides are not equal or equal, the difference may be caused by unstable operation of the electrochemical compressor (e.g. change of voltage during short time), or leakage of hydrogen.
In this embodiment, one or more different flow deviation values are preset in the air conditioner, where the flow deviation value is used to represent a critical value of a difference between an inlet flow and an outlet flow of hydrogen, which may be caused by a hydrogen leakage fault, and when a flow difference between a first hydrogen delivery flow and a second hydrogen delivery flow is greater than the flow deviation value, it means that the electrochemical compressor has the hydrogen leakage fault; and when the flow difference value between the first hydrogen conveying flow and the second hydrogen conveying flow is smaller than the flow deviation value, the electrochemical compressor is judged to have no hydrogen leakage fault.
Here, since the voltage applied to the electrochemical compressor needs to intermittently switch the positive and negative directions, the flow difference between the first hydrogen flow rate and the second hydrogen flow rate is also a positive-negative switching, specifically, when a hydrogen leakage fault occurs, the hydrogen flow rate detected by the electrochemical hydrogen inflow end is much greater than that detected by the hydrogen outflow end, and therefore, assuming that the air conditioner has the hydrogen leakage fault, when hydrogen is delivered from the first metal hydride heat exchanger to the second metal hydride heat exchanger, the first port to which the first hydrogen flow rate is connected is the hydrogen inflow end, and the second port to which the second hydrogen flow rate is connected is the hydrogen outflow end, the flow difference between the first hydrogen flow rate and the second hydrogen flow rate is a positive value; when the hydrogen is delivered from the second metal hydride heat exchanger to the first metal hydride heat exchanger, the first port connected with the first hydrogen output flow is the hydrogen outlet end, the second port connected with the second hydrogen output flow is the hydrogen inlet end, and the difference value of the first hydrogen output flow minus the second hydrogen output flow is a negative value.
Therefore, since the preset flow deviation value of the air conditioner is a positive value, the absolute value of the flow difference value between the first hydrogen conveying flow and the second hydrogen conveying flow is compared with the flow deviation value to facilitate comparison of numerical values.
And S203, determining whether the air conditioner has a hydrogen leakage fault according to the comparison result.
The detection method for the hydrogen leakage provided by the invention can simply, directly and effectively determine whether the air conditioner has a fault of hydrogen leakage or not through the comparison result of the flow difference value of the hydrogen conveying flow of the two hydrogen conveying pipelines and the set deviation value, is not influenced by the hydrogen leakage, is environment-friendly and timely, can mainly detect and judge the hydrogen leakage problem of the electrochemical compressor in real time, greatly helps the performance and the service life of the air conditioner using the electrochemical compressor, and can better guarantee the safety of users.
Optionally, in step 203, determining whether the air conditioner has a hydrogen leakage fault according to the comparison result, which may specifically include:
if the absolute value of the flow difference value is larger than or equal to the flow deviation value, determining that the air conditioner has a hydrogen leakage fault;
And if the absolute value of the flow difference value is smaller than the flow deviation value, determining that the air conditioner has no hydrogen leakage fault.
For example, if a preset flow deviation value of the air conditioner is 50sccm, in the hydrogen delivery process, the detected first hydrogen delivery flow of the first hydrogen delivery pipeline is 80sccm, and the detected second hydrogen delivery flow of the second hydrogen delivery pipeline is 25sccm, then a flow difference value of the first hydrogen delivery flow and the second hydrogen delivery flow is calculated to be 55sccm, and obviously, if the flow difference value is greater than the preset flow deviation value of 50sccm, then it can be determined that the air conditioner has a hydrogen leakage fault.
it should be understood that the preset flow deviation value of 50sccm is only an exemplary illustration, and the specific value of the flow deviation value may be predetermined by experiment or the like before the air conditioner is shipped, but the present invention is not limited thereto.
In the foregoing embodiment, it is mentioned that the air conditioner using the electrochemical compressor may have instability factors other than the leakage of the hydrogen gas in actual operation, and may also cause a difference between the first hydrogen input flow rate and the second hydrogen input flow rate in a short time. Therefore, in order to avoid the problem of misjudgment caused by non-hydrogen leakage failure, the process of obtaining the first hydrogen output flow of the first hydrogen output pipeline of the electrochemical compressor, which is communicated with the first metal hydride heat exchanger, in step S201 may specifically include: and acquiring the average value of the hydrogen output flow of a first hydrogen output pipeline of the electrochemical compressor, which is communicated with the first metal hydride heat exchanger, in the set flow direction within the set time, and taking the average value as the first hydrogen output flow.
For example, if the flow direction is set to be that hydrogen is transported from the first metal hydride to the second metal hydride, and the set time period is 3min, the first hydrogen transportation flow rate obtained in step S201 is the average hydrogen transportation flow rate detected in the first hydrogen transportation pipeline within 3min of the transportation of hydrogen in the set flow direction.
Likewise, obtaining a second hydrogen delivery flow rate of a second hydrogen delivery pipeline of the electrochemical compressor in communication with the second metal hydride heat exchanger comprises: and acquiring the average value of the hydrogen output flow of a second hydrogen output pipeline of the electrochemical compressor, which is communicated with the second metal hydride heat exchanger, in the set flow direction within the set time period, and taking the average value as the second hydrogen output flow.
In this embodiment, to ensure the detection accuracy, the first hydrogen flow rate and the second hydrogen flow rate obtained in step S201 are the average of the hydrogen flow rates detected in the same set flow direction and the same set time period.
preferably, the hydrogen leakage detection method of the present invention further includes: and responding to the hydrogen leakage fault of the air conditioner, stopping the air conditioner, and pushing alarm information to a user. For example, upon determining that there is a hydrogen leakage fault, the air conditioner is shut down and power to the electrochemical compressor is cut off to avoid further leakage of hydrogen; and moreover, alarm information such as flashing can be sent to a user through an indicator light on the air conditioner host.
fig. 3 is a flowchart illustrating a hydrogen leak detection method according to an exemplary embodiment of the present invention.
In the application scenario shown in fig. 3, the specific process of the hydrogen leakage detection method of the present invention includes:
s301, operating an air conditioner;
S302, detecting the flow of the first hydrogen conveying pipeline and the flow of the second hydrogen conveying pipeline within 3min to obtain a flow average value (Q1, Q2) of the first hydrogen conveying pipeline and the second hydrogen conveying pipeline;
S303, calculating to obtain a flow difference value delta Q between flow averages of the first hydrogen conveying pipeline and the second hydrogen conveying pipeline;
s304, judging whether the flow difference value delta Q is larger than or equal to a preset flow deviation value Qn, if so, executing a step S305, otherwise, returning to the step S302;
And S305, stopping the air conditioner, and giving an alarm to the user.
fig. 4 is a block diagram showing the configuration of the hydrogen leakage detection apparatus of the present invention according to an exemplary embodiment.
as shown in fig. 4, the present invention also provides a hydrogen leakage detecting apparatus of an air conditioner using an electrochemical compressor, which can be used for hydrogen leakage detection of an air conditioner using an electrochemical compressor; specifically, the detection device 400 includes:
The acquiring unit 410 is used for acquiring a first hydrogen output flow of a first hydrogen output pipeline of the electrochemical compressor, which is communicated with the first metal hydride heat exchanger, and a second hydrogen output flow of a second hydrogen output pipeline of the electrochemical compressor, which is communicated with the second metal hydride heat exchanger;
a comparing unit 420 for comparing an absolute value of a flow difference between the first hydrogen transfer flow and the second hydrogen transfer flow with a preset flow deviation value;
And a determination unit 430 for determining whether the air conditioner has a hydrogen leakage failure according to the comparison result.
The hydrogen leakage detection device provided by the invention can simply, directly and effectively determine whether the air conditioner has a hydrogen leakage fault or not through the comparison result of the flow difference value of the hydrogen conveying flow of the two hydrogen conveying pipelines and the set deviation value, the detection method is not influenced by the hydrogen leakage, is environment-friendly and timely, can be used for detecting and judging the hydrogen leakage problem generated by the electrochemical compressor in real time, is greatly helpful for the performance and the service life of the air conditioner using the electrochemical compressor, and can better ensure the safety of users.
Fig. 5 is a block diagram showing the configuration of the hydrogen leakage detection apparatus of the present invention according to an exemplary embodiment.
As shown in fig. 5, the present invention also provides a hydrogen leakage detecting apparatus of an air conditioner employing an electrochemical compressor, the detecting apparatus 500 including an obtaining unit 510, a comparing unit 520, a determining unit 530, and a responding unit 540.
the acquiring unit 510 is configured to acquire a first hydrogen output flow of a first hydrogen output pipeline of the electrochemical compressor, which is communicated with the first metal hydride heat exchanger, and a second hydrogen output flow of a second hydrogen output pipeline of the electrochemical compressor, which is communicated with the second metal hydride heat exchanger;
A comparing unit 520, configured to compare an absolute value of a flow difference between the first hydrogen transportation flow and the second hydrogen transportation flow with a preset flow deviation value;
A determination unit 530 for determining whether the air conditioner has a hydrogen leakage failure according to the comparison result.
In an optional embodiment, the determining unit 530 is specifically configured to:
if the absolute value of the flow difference value is larger than or equal to the flow deviation value, determining that the air conditioner has a hydrogen leakage fault;
And if the absolute value of the flow difference value is smaller than the flow deviation value, determining that the air conditioner has no hydrogen leakage fault.
In an alternative embodiment, the obtaining unit 510 includes:
the first obtaining subunit 511 is configured to obtain a mean value of hydrogen transportation flow rates of a first hydrogen transportation pipeline of the electrochemical compressor, which is communicated with the first metal hydride heat exchanger, in a set duration of a set flow direction, and use the mean value as the first hydrogen transportation flow rate;
The second obtaining subunit 512 is configured to obtain a mean value of hydrogen transportation flow rates of a second hydrogen transportation pipeline of the electrochemical compressor, which is communicated with the second metal hydride heat exchanger, within a set duration of the set flow direction, and use the mean value as the second hydrogen transportation flow rate.
and the response unit 540 is used for responding to the hydrogen leakage fault of the air conditioner, stopping the air conditioner and pushing alarm information to a user.
The invention also provides an air conditioner applying the electrochemical compressor, the air conditioner comprises an electrochemical compressor, a first metal hydride heat exchanger and a second metal hydride heat exchanger, the electrochemical compressor is connected with the first metal hydride heat exchanger through a first hydrogen conveying pipeline and is connected with the second metal hydride heat exchanger through a second hydrogen conveying pipeline, and the first metal hydride heat exchanger and the second metal hydride heat exchanger are provided with cavities filled with metal hydrides; the air conditioner further includes a hydrogen leakage detecting device as disclosed in the foregoing embodiments.
It is to be understood that the present invention is not limited to the procedures and structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (7)
1. a hydrogen leakage detection method of an air conditioner using an electrochemical compressor is characterized by comprising the following steps:
Acquiring a first hydrogen output flow of a first hydrogen output pipeline of the electrochemical compressor, which is communicated with a first metal hydride heat exchanger, and a second hydrogen output flow of a second hydrogen output pipeline of the electrochemical compressor, which is communicated with a second metal hydride heat exchanger;
Comparing the absolute value of the difference between the first hydrogen transportation flow and the second hydrogen transportation flow with a preset flow deviation value;
Determining whether the air conditioner has a hydrogen leakage fault according to the comparison result,
Wherein, the obtaining of the first hydrogen output flow of the first hydrogen output pipeline of the electrochemical compressor, which is communicated with the first metal hydride heat exchanger, comprises: acquiring a hydrogen output flow mean value of a first hydrogen output pipeline of the electrochemical compressor, which is communicated with a first metal hydride heat exchanger, in a set flow direction set time period, and taking the mean value as the first hydrogen output flow;
obtaining a second hydrogen delivery flow rate of a second hydrogen delivery pipeline of the electrochemical compressor, which is communicated with a second metal hydride heat exchanger, and the method comprises the following steps: and acquiring the average value of the hydrogen transportation flow of a second hydrogen transportation pipeline of the electrochemical compressor, which is communicated with a second metal hydride heat exchanger, in the set flow direction within the set time period, and taking the average value as the second hydrogen transportation flow.
2. The hydrogen leakage detection method according to claim 1, wherein the determining whether the air conditioner has a hydrogen leakage fault according to the comparison result includes:
If the absolute value of the flow difference value is larger than or equal to the flow deviation value, determining that the air conditioner has a hydrogen leakage fault;
and if the absolute value of the flow difference value is smaller than the flow deviation value, determining that the air conditioner has no hydrogen leakage fault.
3. the hydrogen leakage detection method according to claim 1, further comprising:
and responding to the hydrogen leakage fault of the air conditioner, stopping the air conditioner, and pushing alarm information to a user.
4. A hydrogen leakage detecting device of an air conditioner using an electrochemical compressor, comprising:
the acquiring unit is used for acquiring a first hydrogen output flow of a first hydrogen output pipeline of the electrochemical compressor, which is communicated with the first metal hydride heat exchanger, and a second hydrogen output flow of a second hydrogen output pipeline of the electrochemical compressor, which is communicated with the second metal hydride heat exchanger;
The comparison unit is used for comparing the absolute value of the flow difference value of the first hydrogen conveying flow and the second hydrogen conveying flow with a preset flow deviation value;
a determination unit for determining whether the air conditioner has a hydrogen leakage failure according to the comparison result,
wherein the acquisition unit includes:
The first obtaining subunit is used for obtaining a hydrogen output flow average value of a first hydrogen output pipeline of the electrochemical compressor, which is communicated with the first metal hydride heat exchanger, in a set flow direction set time, and taking the hydrogen output flow average value as the first hydrogen output flow;
And the second obtaining subunit is configured to obtain a mean value of hydrogen transfer flow rates of a second hydrogen transfer pipeline of the electrochemical compressor, which is communicated with the second metal hydride heat exchanger, in the set flow direction within the set time period, and use the mean value as the second hydrogen transfer flow rate.
5. the hydrogen leakage detection apparatus according to claim 4, wherein the determination unit is specifically configured to:
If the absolute value of the flow difference value is larger than or equal to the flow deviation value, determining that the air conditioner has a hydrogen leakage fault;
And if the absolute value of the flow difference value is smaller than the flow deviation value, determining that the air conditioner has no hydrogen leakage fault.
6. The hydrogen gas leakage detection device according to claim 4, further comprising:
And the response unit is used for responding to the hydrogen leakage fault of the air conditioner, stopping the air conditioner and pushing alarm information to a user.
7. An air conditioner applying an electrochemical compressor, the air conditioner comprising an electrochemical compressor, a first metal hydride heat exchanger and a second metal hydride heat exchanger, the electrochemical compressor being connected to the first metal hydride heat exchanger through a first hydrogen transmission line and to the second metal hydride heat exchanger through a second hydrogen transmission line, the first metal hydride heat exchanger and the second metal hydride heat exchanger having chambers filled with metal hydride; characterized in that the air conditioner further comprises a hydrogen leakage detecting device according to any one of claims 4 to 6.
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| CN201810102574.8A CN108344108B (en) | 2018-02-01 | 2018-02-01 | Air conditioner applying electrochemical compressor and hydrogen leakage detection method and device |
| PCT/CN2018/114509 WO2019148927A1 (en) | 2018-02-01 | 2018-11-08 | Air conditioner employing electrochemical compressor and hydrogen leak detection method and device |
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| CN201810102574.8A CN108344108B (en) | 2018-02-01 | 2018-02-01 | Air conditioner applying electrochemical compressor and hydrogen leakage detection method and device |
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| CN108344108B (en) * | 2018-02-01 | 2019-12-06 | 青岛海尔空调器有限总公司 | Air conditioner applying electrochemical compressor and hydrogen leakage detection method and device |
| CN111379975B (en) * | 2018-12-27 | 2021-10-08 | 中国石油化工股份有限公司 | Memory, hydrogen system monitoring method, device and equipment |
| CN109945577A (en) * | 2019-03-25 | 2019-06-28 | 珠海格力电器股份有限公司 | Metal hydride heat pump cold-heat-insulation box |
| CN110044017A (en) * | 2019-03-26 | 2019-07-23 | 青岛海尔空调器有限总公司 | A kind of electrochemistry air-conditioning and its control method |
| CN110044006A (en) * | 2019-03-26 | 2019-07-23 | 青岛海尔空调器有限总公司 | A kind of electrochemistry air-conditioning and its control method |
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| JP2015094513A (en) * | 2013-11-12 | 2015-05-18 | ダイキン工業株式会社 | Air conditioner |
| CN105091407B (en) * | 2014-05-08 | 2019-05-17 | 松下知识产权经营株式会社 | Heat pump assembly |
| CN104228596A (en) * | 2014-10-10 | 2014-12-24 | 郭金武 | Solar hydrogen energy automobile |
| CN104482630B (en) * | 2014-12-18 | 2017-09-22 | 珠海格力电器股份有限公司 | A kind of lack of fluorine of air-conditioners guard method, device and air conditioner |
| CN105805903A (en) * | 2014-12-30 | 2016-07-27 | Tcl空调器(中山)有限公司 | Air conditioner and leakage preventing control method thereof |
| US9797635B2 (en) * | 2015-01-05 | 2017-10-24 | Haier Us Appliance Solutions, Inc. | Electrochemical refrigeration systems and appliances |
| JP6404727B2 (en) * | 2015-01-28 | 2018-10-17 | ヤンマー株式会社 | heat pump |
| CN105910314A (en) * | 2016-04-15 | 2016-08-31 | 青岛海尔空调器有限总公司 | Electrochemical refrigerating system |
| GB2564995B (en) * | 2016-06-30 | 2021-04-28 | Mitsubishi Electric Corp | Air-conditioning apparatus |
| CN106288071A (en) * | 2016-07-21 | 2017-01-04 | 青岛海尔空调器有限总公司 | Electrochemistry air conditioning system |
| CN106288072A (en) * | 2016-07-21 | 2017-01-04 | 青岛海尔空调器有限总公司 | Electrochemistry air conditioning system |
| CN108344108B (en) * | 2018-02-01 | 2019-12-06 | 青岛海尔空调器有限总公司 | Air conditioner applying electrochemical compressor and hydrogen leakage detection method and device |
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