CN108662719B - Safety detection method of air conditioner applying electrochemical compressor and air conditioner - Google Patents
Safety detection method of air conditioner applying electrochemical compressor and air conditioner Download PDFInfo
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- CN108662719B CN108662719B CN201810481050.4A CN201810481050A CN108662719B CN 108662719 B CN108662719 B CN 108662719B CN 201810481050 A CN201810481050 A CN 201810481050A CN 108662719 B CN108662719 B CN 108662719B
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- 238000001514 detection method Methods 0.000 title claims abstract description 42
- 229910052987 metal hydride Inorganic materials 0.000 claims abstract description 125
- 150000004681 metal hydrides Chemical class 0.000 claims abstract description 125
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 102
- 239000001257 hydrogen Substances 0.000 claims abstract description 94
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 94
- 238000005070 sampling Methods 0.000 claims abstract description 55
- 238000007689 inspection Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 41
- 150000002431 hydrogen Chemical class 0.000 abstract description 9
- 230000008859 change Effects 0.000 abstract description 8
- 230000008569 process Effects 0.000 description 21
- 238000010586 diagram Methods 0.000 description 6
- 230000002035 prolonged effect Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002222 fluorine compounds Chemical group 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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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
-
- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- 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
- F24F11/88—Electrical aspects, e.g. circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a safety detection method of an air conditioner applying an electrochemical compressor and the air conditioner, and belongs to the technical field of air conditioners. The detection method comprises the following steps: when the set inspection condition is determined to be met, acquiring a pH value sample value of at least one sampling point arranged on the outer surface of at least one component part of the hydrogen conveying flow path; and when the pH value sample value of at least one sampling point is not matched with the set pH value, determining that the air conditioner has leakage fault. According to the safety detection method for the air conditioner using the electrochemical compressor, if the metal hydride leaks into the air conditioner along with hydrogen, the metal hydride reacts with condensed dew to change the conductive metal hydride and change the pH value of the outer surfaces of the parts, so that leakage faults can be determined according to the change of the pH value of sampling points arranged on the outer surfaces, and the safety use of the air conditioner is ensured and improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a safety detection method of an air conditioner applying an electrochemical compressor and the air conditioner.
Background
With the improvement of living standard, air conditioners have been increasingly used. At present, most air conditioners, particularly domestic air conditioners, use vapor compression refrigeration, and refrigerant in the refrigeration mode is fluoride, so that release or leakage of the refrigerant can cause harm to the environment, and therefore, fluoride-free air conditioners have been gradually developed and used.
Currently, a fluorine-free air conditioner may include: the electrochemical compressor and two ports of the electrochemical compressor are respectively connected with the first metal hydride heat exchanger and the second metal hydride heat exchanger, so that when forward voltage is applied in electrochemical compression, hydrogen can be driven to move from the first metal hydride heat exchanger to the second metal hydride heat exchanger, meanwhile, the second metal hydride heat exchanger absorbing hydrogen releases heat outwards, the first metal hydride heat exchanger absorbing hydrogen absorbs heat outwards, and therefore the heat-absorbing metal hydride heat exchanger is utilized to refrigerate the indoor environment, the purpose of reducing room temperature is achieved, and the refrigeration effect similar to that of a traditional air conditioner is achieved.
Since hydrogen gas moves from the first metal hydride heat exchanger to the second metal hydride heat exchanger through the electrochemical compressor, a hydrogen gas delivery flow path for hydrogen gas delivery can be formed. Generally, the hydrogen conveying flow path is sealed, however, the connection port of the electrochemical compressor or other parts of the hydrogen conveying flow path are prone to the problem of poor sealing, some water vapor is carried out in the hydrogen conveying flow path, and meanwhile, metal hydride also easily flows into the inner space of the air conditioner along with the hydrogen gas flow, so that the detection of the tightness of the air conditioner is very important for guaranteeing the service life of the metal hydride.
Disclosure of Invention
The invention provides a safety detection method of an air conditioner applying an electrochemical compressor and the air conditioner, and aims to solve the problem of how to find leakage faults of the air conditioner applying the electrochemical compressor in time. 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 safety detection method of an air conditioner using an electrochemical compressor, the air conditioner including a hydrogen transportation flow path formed by the electrochemical compressor and two metal hydride heat exchangers respectively connected to two ports of the electrochemical compressor, the detection method comprising:
when the set inspection condition is determined to be met, acquiring a pH value sample value of at least one sampling point arranged on the outer surface of at least one component part of the hydrogen conveying flow path;
and when the pH value sample value of at least one sampling point is not matched with the set pH value, determining that the air conditioner has leakage fault.
In an alternative embodiment, determining that the set check condition is met includes:
obtaining a current value of an applied voltage of an electrochemical compressor, wherein the electrochemical compressor applies a primary voltage so that hydrogen is conveyed from one metal hydride heat exchanger to the other metal hydride heat exchanger through a hydrogen conveying flow path;
when the single delivery of the hydrogen is completed and the obtained current value is matched with the set value, the set check condition is determined to be satisfied.
In an alternative embodiment, satisfying the set check condition includes:
acquiring the current running time of an air conditioner;
when the current running time matches the set running time, it is determined that the set check condition is satisfied.
In an alternative embodiment, after determining that the air conditioner has a leakage fault, the method further includes: and determining the pH value sample value as a new set pH value.
In an alternative embodiment, the detection method further comprises: when the air conditioner is started to operate, the set pH value is configured and stored.
According to a second aspect of the present invention, there is also provided an air conditioner using an electrochemical compressor, the air conditioner comprising a hydrogen gas delivery flow path formed by the electrochemical compressor and two metal hydride heat exchangers respectively connected to two ports of the electrochemical compressor, the air conditioner further comprising a control device for:
when the set inspection condition is determined to be met, acquiring a pH value sample value of at least one sampling point arranged on the outer surface of at least one component part of the hydrogen conveying flow path;
and when the pH value sample value of at least one sampling point is not matched with the set pH value, determining that the air conditioner has leakage fault.
In an alternative embodiment, the control device is specifically configured to:
obtaining a current value of an applied voltage of an electrochemical compressor, wherein the electrochemical compressor applies a primary voltage so that hydrogen is conveyed from one metal hydride heat exchanger to the other metal hydride heat exchanger through a hydrogen conveying flow path;
when the single delivery of the hydrogen is completed and the obtained current value is matched with the set value, the set check condition is determined to be satisfied.
In an alternative embodiment, the control device is specifically configured to:
acquiring the current running time of an air conditioner;
when the current running time matches the set running time, it is determined that the set check condition is satisfied.
In an alternative embodiment, the control device is further configured to: and determining the pH value sample value as a new set pH value.
In an alternative embodiment, the control device is further configured to: when the air conditioner is started to operate, the set pH value is configured and stored.
The technical scheme of the invention has the beneficial effects that:
according to the safety detection method for the air conditioner using the electrochemical compressor, if the metal hydride leaks into the air conditioner along with hydrogen, the metal hydride can be deposited and attached on the outer surfaces of a plurality of components of a hydrogen conveying flow path, meanwhile, the metal hydride heat exchanger can enable the temperature in the air conditioner to be reduced when cooling and absorbing heat, dew can be condensed on the outer surfaces of the components, the metal hydride can react with the condensed dew, so that the conductive metal hydride is changed, the pH value of the outer surfaces of the components is changed, and leakage faults can be determined according to the change of the pH value of sampling points arranged on the outer surfaces, so that the safety use of the air conditioner is ensured and improved.
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 block diagram illustrating a structure of an air conditioner according to an exemplary embodiment;
FIG. 2 is a flow chart illustrating a method of detecting safety of an air conditioner using an electrochemical compressor according to an exemplary embodiment;
FIG. 3 is a flow chart illustrating a method of detecting safety of an air conditioner using an electrochemical compressor according to an exemplary embodiment;
FIG. 4 is a flow chart illustrating a method of detecting safety of an air conditioner using an electrochemical compressor according to an exemplary embodiment;
fig. 5 is a block diagram illustrating a structure of an air conditioner according to an exemplary embodiment;
fig. 6 is a block diagram illustrating a structure of an air conditioner 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 involve structural, logical, electrical, process, and other changes. The embodiments represent only 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. 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 necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, 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 one … …" does not exclude the presence of other like elements in a process, method or apparatus comprising such elements. Various embodiments are described herein in a progressive manner, each embodiment focusing on differences from other embodiments, and identical and similar parts between the various embodiments are sufficient to be seen with each other. The method, product and the like disclosed in the examples are relatively simple to describe because they correspond to the method parts disclosed in the examples, and the relevant points are only referred to the description of the method parts.
Fig. 1 is a block diagram illustrating a structure of an air conditioner according to an exemplary embodiment. As shown in fig. 1, the air conditioner includes: the electrochemical compressor 100 and two metal hydride heat exchangers, herein, for convenience of explanation of the embodiments hereinafter, are defined as a first metal hydride heat exchanger 200 and a second metal hydride heat exchanger 300, respectively, and two ports of the electrochemical compressor 100 are connected to the two metal hydride heat exchangers, respectively, wherein a first port 110 of the electrochemical compressor 100 is connected to the first metal hydride heat exchanger 200, and a second port 120 of the electrochemical compressor 100 is connected to the second metal hydride heat exchanger 300.
In this way, when the electrochemical compressor 100 applies a voltage to the first and second metal hydride heat exchangers 200 and 300 once through the first and second ports 110 and 120, one metal hydride heat exchanger may release hydrogen while the other metal hydride heat exchanger absorbs hydrogen. For example: the first port 110 is an anode and the second port 120 is a cathode, such that hydrogen gas may be moved from the first metal hydride heat exchanger 200 to the second metal hydride heat exchanger 300 through the electrochemical compressor 100 after a forward voltage is applied to the electrochemical compressor 100. Thus, the electrochemical compressor 100 may constitute a hydrogen gas delivery flow path for hydrogen gas transfer with the first and second metal hydride heat exchangers 200 and 300.
Since the first metal hydride heat exchanger 200 releasing hydrogen can absorb heat to the outside and the second metal hydride heat exchanger 300 absorbing hydrogen releases heat to the outside, the indoor environment can be cooled by the heat-absorbing metal hydride heat exchanger, thereby achieving the purpose of reducing the room temperature.
Generally, the hydrogen conveying flow path is sealed, however, the connection port of the electrochemical compressor or other parts of the hydrogen conveying flow path are prone to the problem of poor sealing, some hydrogen possibly leaks from the hydrogen conveying flow path, some metal hydride powder with lighter weight leaks out of the hydrogen conveying pipeline along with the hydrogen and reacts with dew condensed in the air conditioner, so that the conductive metal hydride is changed, and the pH value of the outer surface of the part inside the air conditioner is changed. Therefore, in the embodiment of the invention, the leakage fault of the hydrogen conveying flow path can be determined according to the change of the pH value of the metal hydride, so that whether the air conditioner is good in tightness or not is detected.
Fig. 2 is a flowchart illustrating a safety detection method of an air conditioner using an electrochemical compressor according to an exemplary embodiment, and as shown in fig. 2, a process of the safety detection method includes:
step 201: when the set inspection condition is determined to be met, acquiring a pH value sample value of at least one sampling point arranged on the outer surface of at least one component part of the hydrogen conveying flow path;
step 202: and when the pH value sample value of the at least one sampling point is not matched with the set pH value, determining that the air conditioner has leakage fault.
In an embodiment of the present invention, an air conditioner includes: an electrochemical compressor, and a first metal hydride heat exchanger and a second metal hydride heat exchanger respectively connected with two ports of the electrochemical compressor. When the metal hydride heat exchangers absorb heat and refrigerate, condensed dew is mainly concentrated on the outer surface of the metal hydride heat exchangers, so that the air conditioner is provided with two metal hydride heat exchangers, and sampling points can be arranged on the outer surface of any one of the metal hydride heat exchangers.
Preferably, the sampling point is arranged at the outer surface of the bottom of the metal hydride heat exchanger, when more dew is condensed by the metal hydride heat exchanger, the dew gradually converges to the bottom of the metal hydride heat exchanger under the action of self gravity, so that the sampling point is arranged at the outer surface of the bottom of the metal hydride heat exchanger, more dew samples can be detected, and the accuracy of pH value detection is improved.
In step 201, optionally, since the electrochemical compressor can move hydrogen from one metal hydride heat exchanger to another metal hydride heat exchanger through the hydrogen delivery flow path each time a voltage is applied, the inspection condition can be set according to the number of times the voltage is applied, and thus, in this embodiment, determining that the set inspection condition is satisfied includes: obtaining a current value of an applied voltage of an electrochemical compressor, wherein the electrochemical compressor applies a primary voltage so that hydrogen moves from a first metal hydride heat exchanger to a second metal hydride heat exchanger through a hydrogen conveying flow path; and when the single hydrogen transportation of the second metal hydride heat exchanger is completed and the obtained current value is matched with the set value, determining that the set check condition is met.
For example: the set values include: 1. 11, 21, 31, …, so that if the electrochemical compressor applies a voltage for the first time and the current value is matched with the set value after the current hydrogen delivery process is completed, the set value comprises: 1. 11, 21, 31, …, and the set value include the current sub-value, that is, when the obtained current sub-value matches the set value, it is determined that the set check condition is satisfied, so that the ph value sample value of the metal hydride in the current metal hydride heat exchanger can be further obtained. Or, after the hydrogen transportation process is finished, the electrochemical compressor determines that the set check condition is met because the set value includes the current value 21, that is, the obtained current value is matched with the set value. And the electrochemical compressor applies voltage twenty-three times, and after the hydrogen conveying process is finished, the setting value does not comprise the current value 23, namely, when the obtained current value is not matched with the setting value, the setting inspection condition is determined to be not met.
When the hydrogen moves from the first metal hydride heat exchanger to the second metal hydride heat exchanger through the hydrogen conveying flow path, whether the hydrogen conveying process is finished or not can be determined by determining whether the second metal hydride heat exchanger finishes the hydrogen conveying process. The process of determining whether the second metal hydride heat exchanger completes the hydrogen transportation is various, for example, the process may be determined according to the comparison result of the amount of hydrogen released by the first metal hydride heat exchanger and the amount of hydrogen absorbed by the second metal hydride heat exchanger, or the process may be determined according to the hydrogen content in the metal hydride heat exchanger, and the specific process is not described.
Therefore, the hydrogen exchange process is carried out for N times at intervals, and the pH value sample value of the metal hydride in the current metal hydride heat exchanger can be obtained. N may be a natural integer that is not set. For example: 5. 8, 10, 20, etc.
Optionally, the checking condition may be set according to the running time of the air conditioner, that is, the satisfaction of the checking condition includes: acquiring the current running time of a current air conditioner; when the current running time matches the set running time, it is determined that the set check condition is satisfied.
For example: the setting of the running time includes: and (5) 0 minutes, 10 minutes and 20 minutes …, so that when the air conditioner is started to operate, the current operation time is 0 minutes and is matched with the set operation time, and the condition that the set inspection condition is met can be determined. And the current running time is 8 minutes, and the current running time is not matched with the set running time, so that the condition that the set checking condition is not met can be determined. Of course, the current running time is 20 minutes, and the current running time is matched with the set running time, so that the set checking condition can be determined to be met.
It can be seen that the run time of M minutes can be used to determine whether to perform the acquisition of the ph sample value of the sampling point. M may be a natural integer that is not set. For example: 3. 5, 8, 10, 15, etc.
The method for obtaining the PH value of the sampling point may be various, for example, a PH meter or a PH detector may be used to obtain the PH value of the current sampling point. For example: and placing a detection terminal of the PH value detection device on the outer surface of the part which is set as the sampling point, and obtaining the PH value sample value of the current sampling point through the PH value detection device.
In step 202, the air conditioner stores the set ph value, so that the ph sample value of the sampling point is compared with the stored ph value, and if the ph sample value and the stored ph value are not matched, it can be determined that the hydrogen conveying flow path of the air conditioner has leakage hanging. The hydrogen conveying flow path is a conveying channel for conveying hydrogen from the first metal hydride heat exchanger to the second metal hydride heat exchanger through the electrochemical compressor after the electrochemical compressor applies voltage.
And when the pH value of the pH value sample is not equal to the set pH value, the pH value sample and the set pH value sample are not matched. Or when the relative difference between the pH value sample value and the set pH value is larger than the set difference value, the two values can be determined to be not matched.
For example: the PH value is identified by PH value, if the PH value sample value obtained by PH meter is 8.5 and the PH value kept and set is 8.1, the PH value of the sampling point can be determined to be changed, and then leakage of the hydrogen conveying flow path of the air conditioner can be determined. Or the PH value sample value obtained by the PH meter is 9.5, the set PH value is 9.2, the relative difference value between the PH value and the sample value is 0.3 and is larger than the set difference value of 0.2, the PH value of the current sampling point can be determined to be changed, and then the hydrogen leakage of the hydrogen conveying flow path of the air conditioner can be determined.
Of course, if the ph value of the sample is matched with the set ph value, that is, the ph value of the metal hydride in the current metal hydride heat exchanger is not changed, so that it can be determined that no water vapor leaks into the hydrogen conveying flow path of the air conditioner, that is, the air conditioner has good tightness. When the PH value sample value is not matched with the preset PH value, the leakage of the hydrogen conveying flow path of the air conditioner is determined, and the leak can be maintained in a sealing way, so that the probability that hydrogen leaks out of the metal hydride heat exchanger is reduced, the probability of deterioration and decrement of the metal hydride is reduced, the service life of the metal hydride is ensured and prolonged, and the service life of the air conditioner is further prolonged.
Optionally, after determining that the hydrogen delivery flow path of the air conditioner has a leakage fault, the method further includes: and determining the pH value sample value as a new set pH value.
Therefore, the PH value can be updated in real time, the accuracy of air conditioner safety detection is improved, and leakage of water vapor into a hydrogen conveying flow path of an air conditioner can be determined as long as PH values acquired in front and back times are not matched. Therefore, the air conditioner can be maintained in time, and the service life and the safety of the air conditioner are further improved.
Thus, when the air conditioner is started, the PH value sample value of the sampling point may be obtained, and the stored PH value may not be stored, at this time, the PH value sample value may not be compared, and the PH value sample value is updated to the set PH value and stored, and the detection flow is ended. Thus, in the next air conditioner tightness detection flow, after a new PH value sample value of the sampling point is obtained, the PH value sample value can be compared with the PH value set previously. Therefore, optionally, when the ph value of the sample does not match the set ph value, before determining that the leakage fault occurs in the hydrogen delivery flow path of the air conditioner, the method further includes: when the set PH value is confirmed to be stored, matching the PH sample value with the set PH value. And when the set PH value is determined not to be stored, determining the PH sample value as a new set PH value for storage, and ending the flow.
Or, alternatively, when the air conditioner is started to operate, the set pH value is configured to be a fixed pH value. In the air conditioner safety detection process of this embodiment, after the ph value is matched with the set ph value, the ph value may be updated to a new set ph value and stored.
Of course, the set ph value may be configured as a fixed value for storage. For example: and determining an initial pH value of the sampling point in an initial state as a pH value, and comparing the pH value of each acquired sample value with the fixed pH value to determine whether leakage faults exist.
Thus, optionally, the method for detecting tightness of the air conditioner may further include: when the air conditioner is started to operate, the set pH value is configured and stored.
The following sets of operational flows into specific embodiments, illustrating the methods provided by embodiments of the present disclosure.
Fig. 3 is a flowchart illustrating a safety inspection method of an air conditioner using an electrochemical compressor according to an exemplary embodiment. In this embodiment, the air conditioner may be as shown in fig. 1, and the current metal hydride heat exchanger is a second metal hydride heat exchanger 300, where the metal hydride may be RH. The air conditioner pre-stores the set PH value, and the stored PH value can be configured as the first PH value in the initial state.
As shown in fig. 3, the air conditioner safety detection method includes the steps of:
step 301: a current value of the applied voltage of the electrochemical compressor 100 is obtained.
After the electrochemical compressor 100 applies a forward voltage, hydrogen may be caused to move from the first metal hydride heat exchanger 200 to the second metal hydride heat exchanger 300 through the electrochemical compressor 100. Thus, the electrochemical compressor 100 may constitute a hydrogen gas delivery flow path for hydrogen gas transfer with the first and second metal hydride heat exchangers 200 and 300.
Step 302: determine whether the second metal hydride heat exchanger 300 is completing the present hydrogen delivery? If yes, go to step 303, otherwise, return to step 302.
After the process of hydrogen delivery is completed, step 303 may be executed, otherwise, step 302 is returned.
Step 303: determining whether the obtained current number of times value matches the set value? If yes, go to step 304, otherwise, the current flow ends.
For example: the set values include: 5. 10, 15, …, if the current number is 5 times, 10 times, 15 times, etc., it can be determined that the current number value set value matches, and step 304 is executed, otherwise, the current flow ends.
Step 304: and acquiring a pH value sample value of at least one sampling point.
In this embodiment, the PH value is a PH value, and the detection port of the PH meter may be located at the position of each sampling point, so that the current PH values of all the sampling points may be obtained by the PH meter. For example: the PH is located in the sampling point of metal hydride heat exchanger bottom, and the detection port of PH meter can be located the surface department of metal hydride heat exchanger bottom to, through wireless transmission, can obtain the pH value sample value of this sampling point.
Step 305: judging whether the pH value sample value is matched with the set first pH value? If yes, go to step 306, otherwise, go to step 307.
Here, the set ph value is the fixed first ph value, so if the ph sample value matches the stored first ph value, step 306 is performed, otherwise step 307 is performed.
Because the metal hydride can react with dew, the pH value is changed. Here, the metal hydride is RH, and RH+H 2 O＝ROH+H 2 Thus, after the metal hydride reacts with water, alkaline substances and hydrogen gas are generated, so that the pH value of the sampling point can be increased. Therefore, here, if the ph sample value is greater than the stored first ph value, it may be determined that the two values do not match, and step 307 is performed, otherwise, step 306 is performed.
Step 306: and determining that no leakage fault occurs in the hydrogen conveying flow path of the air conditioner. The flow ends.
The pH value sample value is matched with the stored first pH value, so that the fact that the pH value of the current sampling point is unchanged can be determined, and the fact that leakage faults do not occur in a hydrogen conveying flow path of the air conditioner can be determined.
Step 307: and determining that the leakage fault exists in the hydrogen conveying flow path of the air conditioner. The flow ends.
The pH value sample value is not matched with the stored first pH value, so that the pH value of the sampling point can be determined to be changed, and the leakage problem in the hydrogen conveying flow path of the air conditioner can be further determined.
Therefore, in this embodiment, if the ph value of the sample is not matched with the stored first ph value, it is determined that the leakage fault occurs in the hydrogen delivery flow path of the air conditioner, and the leak fault can be repaired in a sealing manner, so that the probability that hydrogen leaks out of the metal hydride heat exchanger is reduced, the probability of deterioration of the metal hydride is reduced, the service life of the metal hydride is ensured and improved, and the service life and safety of the air conditioner are further improved.
Fig. 4 is a flowchart illustrating a safety inspection method of an air conditioner using an electrochemical compressor according to an exemplary embodiment. In this embodiment, the air conditioner may be as shown in fig. 1. When the air conditioner is started to operate, the set pH value can be stored.
As shown in fig. 4, the air conditioner safety detection method includes the steps of:
step 401: and acquiring the current running time of the air conditioner.
Step 402: determine if the current run time matches the set run time? If yes, go to step 403, otherwise, the current flow ends.
The setting of the running time includes: 10 minutes, 20 minutes, 30 minutes …, so that if the current run time is 10 minutes, 20 minutes, 30 minutes, etc., step 304 can be performed, otherwise, the flow ends.
Step 403: and acquiring a pH value sample value of at least one sampling point.
Step 404: judging whether the pH value sample value is matched with the stored set pH value? If yes, go to step 405, otherwise, go to step 406.
Here, if the relative difference between the ph sample value and the set ph value is smaller than the set value, for example: 0.1, it can be determined that the two match, step 405 is performed, otherwise step 406 is performed.
Step 405: it is determined that there is a leak failure in the hydrogen delivery flow path of the air conditioner, and the process proceeds to step 407.
The two are matched, so that the fact that the pH value of the current sampling point is unchanged can be determined, and the fact that leakage does not occur in a hydrogen conveying flow path of the air conditioner can be determined.
Step 406: it is determined that there is a leak failure in the hydrogen delivery flow path of the air conditioner, and the flow proceeds to step 407.
The two are not matched, so that the change of the pH value of the current sampling point can be determined, and the leakage fault of the hydrogen conveying flow path of the air conditioner can be further determined.
Step 407: and determining the pH value sample value as a new set pH value.
Therefore, the set pH value can be updated in time, and the fault tolerance of the process can be well ensured. Because the PH value can be updated in real time, the accuracy of the air conditioner safety detection is improved, and the hydrogen leakage fault of the hydrogen conveying flow path of the air conditioner can be determined as long as the PH values acquired in front and back are not matched. Therefore, the air conditioner can be maintained in time, and the service life and the safety of the air conditioner are further improved.
Therefore, whether metal hydride exists in the hydrogen conveying flow path or not can be determined according to the change of the pH value of the sampling point, so that whether the tightness of the air conditioner is good or not is detected, and the service life of the air conditioner is guaranteed and prolonged.
According to the process of the air conditioner safety detection method, an air conditioner can be constructed.
Fig. 5 is a block diagram illustrating a structure of an air conditioner according to an exemplary embodiment. As shown in fig. 5, the air conditioner includes: an electrochemical compressor 100, a first metal hydride heat exchanger 200, a second metal hydride heat exchanger 300, and a control device 500.
Wherein the electrochemical compressor 100 is connected to the first and second metal hydride heat exchangers 200 and 300, respectively. Also, the electrochemical compressor 100 may constitute a hydrogen gas transfer flow path for transferring hydrogen gas with the first and second metal hydride heat exchangers 200 and 300.
A control device 500 for acquiring a ph value of at least one sampling point provided on an outer surface of at least one component part of the hydrogen transportation flow path when it is determined that the set inspection condition is satisfied; and when the pH value sample value of at least one sampling point is not matched with the set pH value, determining that the air conditioner has leakage fault.
Optionally, the control device 500 is further configured to obtain a current value of the voltage applied by the electrochemical compressor 100, where the electrochemical compressor applies a voltage once, so that the hydrogen moves from the first metal hydride heat exchanger 200 to the second metal hydride heat exchanger 300 through the hydrogen delivery flow path, and when the single hydrogen delivery of the second metal hydride heat exchanger 300 is completed and the obtained current value matches the set value, it is determined that the set check condition is satisfied.
Optionally, the control device 500 is further configured to obtain a current operation time of the air conditioner, and determine that the set check condition is satisfied when the current operation time matches the set operation time.
The control device 500 may be electrically connected to the sampling devices of at least one sampling point on the first metal hydride heat exchanger 200 and the second metal hydride heat exchanger 300, so that the process of obtaining the PH value of the sampling point may be varied, for example, a PH meter or a PH detector (i.e. sampling device) may be used to obtain the PH value of the current sampling point. For example: the detection terminal of the PH value detection device is placed at the current sampling point, namely the control device 500 can communicate through the PH value detection device to obtain the PH value sample value of the current sampling point.
In one embodiment of the present invention, the control device 500 is further configured to determine the ph value of the ph sample as the new set ph value. Therefore, the set pH value can be updated in real time, and the fault tolerance and the detection accuracy of the air conditioner are improved.
Optionally, the control device 500 is further configured to configure and store the set ph value when the air conditioner starts to operate.
The air conditioner provided by the embodiment of the present disclosure is exemplified below.
Fig. 6 is a block diagram illustrating a structure of an air conditioner according to an exemplary embodiment. As shown in fig. 6, the air conditioner includes: an electrochemical compressor 100, a first metal hydride heat exchanger 200, a second metal hydride heat exchanger 300, a PH value detection device 400 and a control device 500.
Wherein the electrochemical compressor 100 is connected to the first and second metal hydride heat exchangers 200 and 300, respectively. Also, the electrochemical compressor 100 may constitute a hydrogen gas transfer flow path for transferring hydrogen gas with the first and second metal hydride heat exchangers 200 and 300.
The detection terminal of the ph detection device 400 is located on a sampling point of the outer surface of one or more components of the electrochemical compressor 100, the first metal hydride heat exchanger 200 and the second metal hydride heat exchanger 300, wherein the detection terminal of the ph detection device 400 can be in contact with the outer surface of the current component, and the control device 500 can be in communication connection with the ph detection device 400 to obtain the ph value of the sampling point.
Wherein, when the set inspection condition is determined to be satisfied, the control device 500 may obtain a ph sample value of the sampling point, and when the ph sample value is not matched with the stored set ph value, determine that a leakage fault exists in the hydrogen transportation flow path of the air conditioner.
Alternatively, the control device 500 may obtain the current value of the voltage applied by the electrochemical compressor 100, wherein the electrochemical compressor applies the voltage once such that the hydrogen gas moves from the first metal hydride heat exchanger 200 to the second metal hydride heat exchanger 300 through the hydrogen gas delivery flow path; and when the second metal hydride heat exchanger 300 completes the hydrogen transportation and the obtained current value is matched with the set value, determining that the set check condition is met, thereby obtaining the PH value sample value of the metal hydride in the second metal hydride heat exchanger 300.
Alternatively, the control device 500 may acquire the current operation time of the air conditioner; when the current operation time matches the set operation time, it is determined that the set inspection condition is satisfied, so that a ph sample value of the metal hydride in the second metal hydride heat exchanger 300 can be obtained.
Of course, the control device 500 may also determine the ph sample value as the newly set ph value.
Optionally, the control device 500 may also configure and store the set ph value when the air conditioner starts to operate.
Therefore, in the embodiment of the invention, whether hydrogen leakage occurs in the hydrogen conveying flow path can be determined according to the change of the pH value of the sampling point, so that whether the air conditioner is good in tightness is detected. The leakage fault of the hydrogen conveying flow path of the air conditioner is determined, and the air conditioner can be overhauled in a sealing way, so that the probability that water vapor enters the metal hydride heat exchanger is reduced, the probability of deterioration of the metal hydride is reduced, the service life of the metal hydride is ensured and prolonged, and the service life of the air conditioner is further prolonged.
It is to be understood that the invention is not limited to the arrangements and instrumentality shown in the drawings and described above, 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 (10)
1. A safety detection method of an air conditioner using an electrochemical compressor, wherein the air conditioner includes a hydrogen gas transfer flow path formed by the electrochemical compressor and two metal hydride heat exchangers respectively connected with two ports of the electrochemical compressor, the detection method comprising:
when the set inspection condition is determined to be met, acquiring a pH value sample value of at least one sampling point arranged on the outer surface of at least one component part of the hydrogen conveying flow path, wherein the sampling point is arranged on the outer surface of the bottom of the metal hydride heat exchanger;
and when the pH value sample value of the at least one sampling point is not matched with the set pH value, determining that the air conditioner has leakage fault.
2. The detection method according to claim 1, wherein the determining that the set check condition is satisfied includes:
obtaining a current value of the applied voltage of the electrochemical compressor, wherein the electrochemical compressor applies a primary voltage so that hydrogen is conveyed from one metal hydride heat exchanger to the other metal hydride heat exchanger through the hydrogen conveying flow path;
and when the single conveying of the hydrogen is completed and the obtained current value is matched with a set value, determining that a set check condition is met.
3. The method of detecting according to claim 1, wherein the satisfaction of the set check condition includes:
acquiring the current running time of the air conditioner;
and when the current running time is matched with the set running time, determining that the set checking condition is met.
4. The method for detecting a leakage fault of an air conditioner according to claim 1, further comprising:
and determining the pH value as the new set pH value.
5. The method of detection according to claim 1 or 4, further comprising:
and when the air conditioner is started to operate, the set pH value is configured and stored.
6. An air conditioner using an electrochemical compressor, characterized in that the air conditioner comprises a hydrogen conveying flow path formed by the electrochemical compressor and two metal hydride heat exchangers respectively connected with two ports of the electrochemical compressor, and further comprises a control device for:
when the set inspection condition is determined to be met, acquiring a pH value sample value of at least one sampling point arranged on the outer surface of at least one component part of the hydrogen conveying flow path, wherein the sampling point is arranged on the outer surface of the bottom of the metal hydride heat exchanger;
and when the pH value sample value of the at least one sampling point is not matched with the set pH value, determining that the air conditioner has leakage fault.
7. The air conditioner according to claim 6, wherein the control device is specifically configured to:
obtaining a current value of the applied voltage of the electrochemical compressor, wherein the electrochemical compressor applies a primary voltage so that hydrogen is conveyed from one metal hydride heat exchanger to the other metal hydride heat exchanger through the hydrogen conveying flow path;
and when the single conveying of the hydrogen is completed and the obtained current value is matched with a set value, determining that a set check condition is met.
8. The air conditioner according to claim 6, wherein the control means is specifically configured to:
acquiring the current running time of the air conditioner;
and when the current running time is matched with the set running time, determining that the set checking condition is met.
9. The air conditioner of claim 6, wherein the control means is further for:
and determining the pH value as the new set pH value.
10. The air conditioner according to claim 6 or 9, wherein the control device is further configured to:
and when the air conditioner is started to operate, the set pH value is configured and stored.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04227440A (en) * | 1990-06-27 | 1992-08-17 | United Technol Corp <Utc> | Refrigeration cycle and process wetting electrolytic film |
| CN1888725A (en) * | 2006-07-13 | 2007-01-03 | 上海交通大学 | Single alloy compressing-diffusing metal hydride heat pump/refrigerating method and system |
| CN101283075A (en) * | 2005-10-03 | 2008-10-08 | 法商Bic公司 | Optimizing hydrogen generating efficiency in fuel cell cartridges |
| CN107782012A (en) * | 2016-08-30 | 2018-03-09 | 青岛海尔空调器有限总公司 | electrochemical refrigeration system and its control method |
| CN108627305A (en) * | 2017-03-23 | 2018-10-09 | 青岛海尔空调器有限总公司 | The method and air-conditioning system of air-conditioning system sealing propertytest |
-
2018
- 2018-05-18 CN CN201810481050.4A patent/CN108662719B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04227440A (en) * | 1990-06-27 | 1992-08-17 | United Technol Corp <Utc> | Refrigeration cycle and process wetting electrolytic film |
| CN101283075A (en) * | 2005-10-03 | 2008-10-08 | 法商Bic公司 | Optimizing hydrogen generating efficiency in fuel cell cartridges |
| CN1888725A (en) * | 2006-07-13 | 2007-01-03 | 上海交通大学 | Single alloy compressing-diffusing metal hydride heat pump/refrigerating method and system |
| CN107782012A (en) * | 2016-08-30 | 2018-03-09 | 青岛海尔空调器有限总公司 | electrochemical refrigeration system and its control method |
| CN108627305A (en) * | 2017-03-23 | 2018-10-09 | 青岛海尔空调器有限总公司 | The method and air-conditioning system of air-conditioning system sealing propertytest |
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