CN112229126A - Absorption refrigerator refrigerating system damage pre-judging method and device - Google Patents
Absorption refrigerator refrigerating system damage pre-judging method and device Download PDFInfo
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- CN112229126A CN112229126A CN202011137661.0A CN202011137661A CN112229126A CN 112229126 A CN112229126 A CN 112229126A CN 202011137661 A CN202011137661 A CN 202011137661A CN 112229126 A CN112229126 A CN 112229126A
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 124
- 230000006378 damage Effects 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005057 refrigeration Methods 0.000 claims abstract description 39
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 238000012544 monitoring process Methods 0.000 claims description 63
- 239000000523 sample Substances 0.000 claims description 18
- 230000000844 anti-bacterial effect Effects 0.000 claims description 6
- 230000017525 heat dissipation Effects 0.000 claims description 6
- 238000010257 thawing Methods 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 abstract description 9
- 230000002159 abnormal effect Effects 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 230000003115 biocidal effect Effects 0.000 description 6
- 239000000306 component Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical group [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
- F25D19/003—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors with respect to movable containers
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention provides a method and a device for prejudging damage of an absorption refrigerator refrigerating system, wherein the device for prejudging damage of the absorption refrigerator refrigerating system comprises a power supply system and a control system, the power supply system comprises a power supply board, a transformer is arranged on the power supply board, and a power switch capable of cutting off a circuit is arranged between the transformer and a heating pipe; the control system comprises a control panel, an electronic dog is connected with the control panel, and the control panel is connected with the power switch control system. The temperature change of the evaporator part of the refrigeration system is monitored by the electronic dog, when the temperature of the evaporator part is monitored to be abnormal, the controller judges, if the refrigeration system is judged to be abnormal, the power supply of the power supply board is cut off, and the refrigerator stops working. The invention is applied to the absorption refrigerator, can prejudge the damage of the refrigeration system in advance, and can close the main power supply of the refrigerator, thereby avoiding the leakage of the refrigerant caused by the burning out of the steel pipe when the refrigeration system of the refrigerator works at high temperature and high pressure for a long time.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to a method and a device for prejudging damage of an absorption refrigerator refrigeration system.
Background
The absorption refrigerator is a high-tech refrigeration equipment of environment protection type, because does not use freon, has protected the atmospheric ozone layer, moreover, the absorption refrigerator still does not set up compressor and any mechanical transmission system, consequently can not produce any noise in the operation process, is praised as "two green environmental protection products".
The core component of the absorption refrigerator is a refrigerating machine core, and the refrigerating machine core is a full-closed system formed by bending, forming, combining and welding a series of steel pipes.
The absorption refrigerator, like the conventional refrigerator, also requires certain safety protection measures in order to ensure safe operation of the refrigerator. Because the absorption refrigerator is a novel refrigeration device, the safety protection technology for the absorption refrigerator in the industry is single, and the absorption refrigerator is simple on-off protection.
If the absorption refrigerator does not refrigerate (the reason may be that the refrigerator door is not closed, or the refrigerator sealing performance is reduced to cause cold leakage), the temperature in the absorption refrigerator cannot be reduced, then the refrigerating machine core of the absorption refrigerator can run for a long time, and the damage of the refrigerating system of the refrigerator is very easy to cause the leakage of the refrigerant. Since the refrigerant used in the absorption refrigerator is ammonia water, leakage of the refrigerant may generate a very bad smell to cause an irritating injury to a user.
Disclosure of Invention
Problem (A)
In summary, how to solve the problem that refrigerant leakage is likely to occur in the absorption refrigerator becomes a problem to be solved urgently by those skilled in the art.
(II) technical scheme
The invention provides a method for prejudging damage of an absorption refrigerator refrigerating system, which comprises the following steps:
firstly, acquiring a set temperature comparison threshold of an object according to a temperature monitoring signal;
acquiring the real-time operating temperature of a refrigerating part of the absorption refrigerator refrigerating system and/or acquiring the real-time operating temperature of a non-heat-dissipation part of the absorption refrigerator refrigerating system, and generating a temperature monitoring signal;
and step three, comparing the temperature monitoring signal with a set temperature comparison threshold, and stopping the operation of the absorption refrigerator refrigerating system when the temperature monitoring signal is greater than the temperature comparison threshold.
Preferably, in the method for predicting damage to a refrigeration system of an absorption refrigerator provided by the present invention, in the step one: when the temperature monitoring signal acquisition object is an evaporator part of an absorption refrigerator refrigerating system, the set temperature comparison threshold value is-5-25 ℃; when the temperature monitoring signal acquisition object is a separator part of an absorption refrigerator refrigerating system, the set temperature comparison threshold value is 30-45 ℃.
Preferably, in the method for predicting damage to a refrigeration system of an absorption refrigerator provided by the present invention, the second step further includes obtaining a real-time temperature of an inner chamber of the absorption refrigerator, and generating an auxiliary monitoring signal; in the third step, the temperature monitoring signal is compared with a set temperature comparison threshold, and when the temperature monitoring signal is greater than the temperature comparison threshold, the auxiliary monitoring signal is compared with the set temperature comparison threshold: when the auxiliary monitoring signal is also larger than the temperature comparison threshold value, stopping the operation of the absorption refrigerator refrigerating system; and when the auxiliary monitoring signal is smaller than the temperature comparison threshold, acquiring the temperature monitoring signal again and comparing the temperature monitoring signal with the set temperature comparison threshold, if the temperature monitoring signal is still larger than the temperature comparison threshold, stopping the operation of the absorption refrigerator refrigerating system, and if the temperature monitoring signal is smaller than or equal to the temperature comparison threshold, repeating the step two and the step three at certain intervals under the condition that the operation condition of the absorption refrigerator refrigerating system is maintained.
Preferably, in the method for predicting damage to a refrigeration system of an absorption refrigerator provided by the present invention, the interval is set to 1min to 5 min.
The invention also provides a device for prejudging the damage of the absorption refrigerator refrigerating system, which comprises:
the power supply system comprises a power supply board, wherein a transformer is arranged on the power supply board, a power supply input lead is electrically connected with the input end of the transformer, a heating pipe is electrically connected with the output end of the transformer, and a power switch capable of cutting off a circuit is arranged between the transformer and the heating pipe;
control system, control system including the control panel, in be provided with the controller on the control panel, the controller internal storage has the temperature ratio threshold value of acquireing the object and setting for according to temperature monitoring signal, with controller signal connection has the electron dog that is used for acquireing absorption refrigerator refrigerating system and is used for the real-time running temperature of refrigeration part and \ or acquireing the real-time running temperature of absorption refrigerator refrigerating system non-heat dissipation part and generate temperature monitoring signal, the controller and the electron dog with the output electrical connection of transformer, the controller with switch control system connects.
Preferably, in the damage prediction device for a refrigeration system of an absorption refrigerator provided by the present invention, the damage prediction device further comprises: the temperature sensing probe is used for acquiring the real-time temperature of the inner chamber of the absorption refrigerator and generating an auxiliary monitoring signal, the temperature sensing probe is electrically connected with the output end of the transformer, and the temperature sensing probe is in signal connection with the controller.
Preferably, in the damage prediction device for a refrigeration system of an absorption refrigerator provided by the present invention, the dongle includes a first dongle and a second dongle; the first electronic dog is arranged on an evaporator part of the absorption refrigerator refrigerating system and used for acquiring the surface temperature of the evaporator part of the absorption refrigerator refrigerating system; the second electronic dog is arranged on the separator part of the absorption refrigerator refrigerating system and used for acquiring the surface temperature of the separator part of the absorption refrigerator refrigerating system.
Preferably, in the damage prediction device for the absorption refrigerator refrigeration system provided by the invention, an antibacterial PVC casing is arranged outside the dongle.
Preferably, in the device for predicting damage of the absorption refrigerator refrigeration system provided by the present invention, a moisture-proof layer is disposed between the dongle and the antibacterial PVC casing, and the antibacterial PVC casing is fixedly disposed on the inner container of the absorption refrigerator by bolts.
(III) advantageous effects
Through the structural design, in the damage pre-judging device of the absorption refrigerator refrigerating system provided by the invention, the power panel supplies power to the control panel, the control panel is connected with the electronic dog and the temperature sensing probe, the electronic dog and the temperature sensing probe start to work, the electronic dog monitors the temperature change of the evaporator part of the refrigerating system, when the temperature of the evaporator part is monitored to be abnormal, the temperature change is fed back to the control panel, the control panel is provided with the controller, the controller judges, if the refrigerating system is judged to be abnormal in operation, the power supply of the power panel is cut off, and the refrigerator stops working. The invention is applied to the absorption refrigerator, can prejudge the damage of the refrigeration system in advance, and can close the main power supply of the refrigerator, thereby avoiding the leakage of the refrigerant caused by the burning out of the steel pipe when the refrigeration system of the refrigerator works at high temperature and high pressure for a long time.
Drawings
FIG. 1 is a schematic circuit diagram of a damage prediction device for an absorption refrigerator refrigeration system according to an embodiment of the present invention;
in fig. 1, the correspondence between the component names and the reference numbers is:
a power panel 1, a transformer 2, a power input lead 3, a heating tube 4, a control panel 5,
A controller 6, an electronic dog 7 and a temperature sensing probe 8.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, fig. 1 is a schematic circuit diagram of a damage prediction apparatus for a refrigeration system of an absorption refrigerator according to an embodiment of the present invention.
The invention provides a damage pre-judging device for an absorption refrigerator refrigerating system, which is used for monitoring the real-time temperature of the absorption refrigerator refrigerating system during operation (specifically aiming at a certain functional area or functional part of the absorption refrigerator refrigerating system, such as an evaporator part).
For example, for the evaporator section of an absorption refrigerator refrigeration system, which operates normally at temperatures between-5 ℃ and 15 ℃, if a fault occurs, the temperature at which the system operates may reach above 35 ℃ or even higher, and therefore the temperature threshold set for the evaporator section of an absorption refrigerator refrigeration system should be less than 35 ℃, and the most preferred temperature is 15 ℃, but of course 10 ℃, 16 ℃, 17 ℃, 18 ℃, 19 ℃, 20 ℃, 25 ℃, 30 ℃ or 35 ℃.
For another example, for the generator part of the absorption refrigerator refrigeration system, the temperature is between 45 ℃ and 60 ℃ during normal operation, and if a fault occurs, the temperature during operation of the system may reach above 70 ℃ or even higher, so the temperature threshold set for the generator part of the absorption refrigerator refrigeration system should be greater than 60 ℃, 70 ℃ being the optimal set threshold, and certainly may be 71 ℃, 72 ℃, 73 ℃, 74 ℃ or 75 ℃.
For another example, for the separator part of the absorption refrigerator refrigeration system, the temperature is between 30 ℃ and 45 ℃ during normal operation, and if a fault occurs, the temperature during operation of the system may reach above 60 ℃ or even higher, so the temperature threshold set for the separator part of the absorption refrigerator refrigeration system should be greater than 45 ℃ and 50 ℃ as the optimal set threshold, but may be 51 ℃, 52 ℃, 53 ℃, 54 ℃ or 55 ℃.
For another example, in the evaporator portion of the absorption refrigerator refrigeration system, when the evaporator portion or the inside of the refrigerator is normally operated, frost may be formed, and the controller 6 of the refrigerator may automatically stop the operation of the absorption refrigerator refrigeration system according to a set degree to perform a defrosting operation. A restart of the absorption refrigerator refrigeration system may fail. Or the absorption refrigerator refrigeration system fails during normal operation, the evaporator section will also defrost. The invention monitors whether the temperature of the evaporator part changes or not within a set time after defrosting (if the absorption refrigerator refrigerating system operates normally, the temperature of the evaporator part is reduced, and if the absorption refrigerator refrigerating system operates abnormally or does not operate, the temperature of the evaporator part is not reduced or even increased). The set time is 2h, if the temperature of the evaporator part is not reduced by 2 ℃ compared with the temperature at the initial monitoring time after 2h, the controller 6 judges that the absorption refrigerator refrigerating system is damaged, the controller 6 cuts off the power supply and stops the absorption refrigerator to continuously work.
The damage pre-judging device of the absorption refrigerator refrigerating system provided by the invention comprises the following components:
1. power supply system
The power supply system is an energy system of the invention, which comprises a power plug and is powered by commercial power. The mains voltage is 220V, and the voltages required by the operation of different components of the invention are different, so the power supply system provided by the invention also has the functions of voltage transformation and voltage stabilization.
Specifically, the power supply system comprises a power supply board 1, wherein the power supply board 1 is a Printed Circuit Board (PCB), a plurality of electronic components such as capacitors, inductors and the like are arranged on the power supply board 1, a transformer 2 is further arranged on the power supply board 1, 220V mains supply voltage is transformed by the transformer 2, and current with specific voltage is supplied to each electronic component after passing through a voltage stabilizing circuit.
The input end of the transformer 2 is electrically connected with a power input lead 3, the output end of the transformer 2 is electrically connected with a heating tube 4, and it should be noted that: the output end of the transformer 2 is provided with a plurality of output terminals, different output terminals can output currents with different voltages, one output terminal is connected with a heating pipe 4, and the heating pipe 4 can convert electric energy into heat energy to heat a separator part of an absorption refrigerator refrigerating system, so that a refrigerant is separated from other reagents.
A power switch capable of cutting off the circuit is provided between the transformer 2 and the heating pipe 4, and the power switch is an electronic control type switching device capable of switching on or off the circuit according to a control signal.
2. Control system
The control system is an intelligent control part of the invention, can acquire real-time temperature information of a specific position of the absorption refrigerator by arranging a plurality of groups of temperature sensors, and is mainly aimed at a refrigerating system of the absorption refrigerator, in particular to an evaporator part of the refrigerating system of the absorption refrigerator.
Meanwhile, the control system also comprises a control panel 5, a controller 6 is arranged on the control panel 5, and the controller 6 can adopt a micro single chip microcomputer which is commonly used in the industry in the prior art and has the functions of signal processing, scheme decision and control.
The controller 6 is internally stored with a temperature comparison threshold set according to a temperature monitoring signal acquisition object, the dongle 7 for acquiring the real-time operating temperature of the absorption refrigerator refrigeration system used for the refrigeration part and/or acquiring the real-time operating temperature of the non-heat dissipation part of the absorption refrigerator refrigeration system and generating a temperature monitoring signal is in signal connection with the controller 6, each dongle 7 is allocated with a specific equipment code, the dongle 7 is set to a specific area after being allocated with the specific equipment code, the specific area is set with a specific temperature threshold, so that the temperature monitoring signal sent by the dongle 7 is loaded with the specific equipment code, and the controller 6 can make an accurate judgment.
In the present invention, the dongle 7 specifically refers to a temperature sensor, the controller 6 and the dongle 7 are electrically connected to the output terminal of the transformer 2, and the controller 6 is connected to the power switch control system.
Based on the system structure, the invention also provides a method for prejudging the damage of the absorption refrigerator refrigerating system, and specifically the method for prejudging the damage of the absorption refrigerator refrigerating system comprises the following steps:
firstly, acquiring a set temperature comparison threshold of an object according to a temperature monitoring signal;
acquiring the real-time operating temperature of a refrigerating part of the absorption refrigerator refrigerating system and/or acquiring the real-time operating temperature of a non-heat-dissipation part of the absorption refrigerator refrigerating system, and generating a temperature monitoring signal;
and step three, comparing the temperature monitoring signal with a set temperature comparison threshold, and stopping the operation of the absorption refrigerator refrigerating system when the temperature monitoring signal is greater than the temperature comparison threshold.
Specifically, in step one: when the temperature monitoring signal acquisition object is an evaporator part of an absorption refrigerator refrigerating system, the set temperature comparison threshold value is-5-25 ℃; when the temperature monitoring signal acquisition object is a separator part of an absorption refrigerator refrigerating system, the set temperature comparison threshold value is 30-45 ℃.
Specifically, the second step further comprises the steps of obtaining the real-time temperature of the inner chamber of the absorption refrigerator and generating an auxiliary monitoring signal; in step three, the temperature monitoring signal is compared with a set temperature comparison threshold (for convenience of distinction, defined as a first temperature comparison threshold here), and when the temperature monitoring signal is greater than the temperature comparison threshold (the first temperature comparison threshold), the auxiliary monitoring signal is compared with a set temperature comparison threshold (defined as a second temperature comparison threshold here): when the auxiliary monitoring signal is greater than the temperature comparison threshold (second temperature comparison threshold), stopping the operation of the absorption refrigerator refrigeration system; and when the auxiliary monitoring signal is smaller than the temperature comparison threshold (second temperature comparison threshold), acquiring the temperature monitoring signal again and comparing the temperature monitoring signal with a set temperature comparison threshold (first temperature comparison threshold), if the temperature monitoring signal is still larger than the temperature comparison threshold (first temperature comparison threshold), stopping the operation of the absorption refrigerator refrigerating system, and if the temperature monitoring signal is smaller than or equal to the temperature comparison threshold (first temperature comparison threshold), repeating the second step and the third step at intervals of a certain time under the condition that the operation of the absorption refrigerator refrigerating system is kept. Wherein the certain time interval is 1min to 5 min.
In the method, the temperature signal of the evaporator part of the absorption refrigerator refrigerating system is acquired as a main monitoring signal, the temperature signals of other parts (a separator part and a refrigerator inner chamber area) of the absorption refrigerator refrigerating system are acquired as auxiliary monitoring signals, and therefore at least two groups of monitoring signals are used as control parameters for stopping or not, and the accuracy of system judgment can be improved.
Furthermore, the invention is also provided with a temperature sensing probe 8 which is used for acquiring the real-time temperature of the inner chamber of the absorption refrigerator and can generate an auxiliary monitoring signal, the temperature sensing probe 8 is electrically connected with the output end of the transformer 2, and the temperature sensing probe 8 is in signal connection with the controller 6.
Specifically, the dongle 7 includes a first dongle and a second dongle; the first electronic dog is arranged on the evaporator part of the absorption refrigerator refrigerating system and used for acquiring the surface temperature of the evaporator part of the absorption refrigerator refrigerating system; the second electronic dog is arranged on the separator part of the absorption refrigerator refrigerating system and used for acquiring the surface temperature of the separator part of the absorption refrigerator refrigerating system.
According to the structural design, the temperature sensing probe 8, the first electronic dog and the second electronic dog are arranged, the first electronic dog and the second electronic dog monitor the operating temperature of the absorption refrigerator refrigerating system, and the temperature sensing probe 8 monitors the temperature of the inner chamber of the refrigerator. The difference between the use of the dongle 7 and the use of the temperature sensing probe 8 is that: the electronic dog 7 directly monitors the operation temperature of the absorption refrigerator refrigerating system, judges whether the system normally operates according to the operation temperature of the absorption refrigerator refrigerating system, and the temperature sensing probe 8 monitors the temperature of an inner cavity chamber of the absorption refrigerator and is mainly used for judging whether a refrigerator door is closed.
Specifically, be provided with antibiotic PVC shell in the outside of dongle 7, dongle 7 sets up in antibiotic PVC shell, and later antibiotic PVC shell is encapsulating, encapsulates dongle 7 in antibiotic PVC shell gas tightness ground, can effectively reduce the water and invade dongle 7 and cause the probability that dongle 7 damaged like this.
Further, be provided with the dampproof course between electron dog 7 and antibiotic PVC shell, antibiotic PVC shell passes through bolt fastening and sets up on the inner bag of absorption formula refrigerator, and the dampproof course specifically is dampproofing asbestos.
Through the structural design, in the damage pre-judging device of the absorption refrigerator refrigerating system provided by the invention, the power panel 1 supplies power to the control panel 5, the control panel 5 is connected with the electronic dog 7 and the temperature sensing probe 8, the electronic dog 7 and the temperature sensing probe 8 start to work, the electronic dog 7 monitors the temperature change of the evaporator part of the refrigerating system, when the temperature of the evaporator part is monitored to be abnormal, the temperature change is fed back to the control panel 5, the controller 6 is arranged on the control panel 5, the judgment is carried out by the controller 6, if the operation of the refrigerating system is judged to be abnormal, the power supply of the power panel 1 is cut off, and the refrigerator stops working. The invention is applied to the absorption refrigerator, can prejudge the damage of the refrigeration system in advance, and can close the main power supply of the refrigerator, thereby avoiding the leakage of the refrigerant caused by the burning out of the steel pipe when the refrigeration system of the refrigerator works at high temperature and high pressure for a long time.
In the invention, one end of the electronic dog 7 is fixed on the refrigerator evaporator, the other end is connected to the refrigerator control board 5, when the temperature of the evaporator part changes slightly or rises within a certain time, the electronic dog 7 part feeds back to the control board 5 to damage the refrigerator refrigerating system, and the control board 5 cuts off the main power supply, so that the refrigerating system does not work any more, and the occurrence of refrigerant leakage of the refrigerating system is avoided.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (9)
1. A method for predicting damage of a refrigeration system of an absorption refrigerator is characterized by comprising the following steps:
firstly, acquiring a set temperature comparison threshold of an object according to a temperature monitoring signal;
acquiring the real-time operating temperature of a refrigerating part of the absorption refrigerator refrigerating system and/or acquiring the real-time operating temperature of a non-heat-dissipation part of the absorption refrigerator refrigerating system, and generating a temperature monitoring signal;
and step three, comparing the temperature monitoring signal with a set temperature comparison threshold, and stopping the operation of the absorption refrigerator refrigerating system when the temperature monitoring signal is greater than the temperature comparison threshold.
2. The absorption refrigerator refrigerating system damage prediction method as recited in claim 1,
in the first step:
after defrosting in an absorption refrigerator;
when the temperature monitoring signal acquisition object is an evaporator part of an absorption refrigerator refrigerating system, the set temperature comparison threshold value is-5-25 ℃;
when the temperature monitoring signal acquisition object is a separator part of an absorption refrigerator refrigerating system, the set temperature comparison threshold value is 30-45 ℃.
3. The absorption refrigerator refrigerating system damage prediction method as recited in claim 1,
acquiring the real-time temperature of the inner chamber of the absorption refrigerator and generating an auxiliary monitoring signal;
in the third step, the temperature monitoring signal is compared with a set temperature comparison threshold, and when the temperature monitoring signal is greater than the temperature comparison threshold, the auxiliary monitoring signal is compared with the set temperature comparison threshold: when the auxiliary monitoring signal is also larger than the temperature comparison threshold value, stopping the operation of the absorption refrigerator refrigerating system; and when the auxiliary monitoring signal is smaller than the temperature comparison threshold, acquiring the temperature monitoring signal again and comparing the temperature monitoring signal with the set temperature comparison threshold, if the temperature monitoring signal is still larger than the temperature comparison threshold, stopping the operation of the absorption refrigerator refrigerating system, and if the temperature monitoring signal is smaller than or equal to the temperature comparison threshold, repeating the step two and the step three at certain intervals under the condition that the operation condition of the absorption refrigerator refrigerating system is maintained.
4. The absorption refrigerator refrigerating system damage prediction method as recited in claim 3,
the certain time interval is 1min to 5 min.
5. An absorption refrigerator refrigerating system damage prejudging device is characterized by comprising:
the power supply system comprises a power supply board (1), wherein a transformer (2) is arranged on the power supply board, a power supply input lead (3) is electrically connected with the input end of the transformer, a heating pipe (4) is electrically connected with the output end of the transformer, and a power supply switch capable of cutting off a circuit is arranged between the transformer and the heating pipe;
control system, control system including control panel (5), in be provided with controller (6) on the control panel, the controller is internal to be stored and to obtain the object and the temperature ratio threshold value that sets for according to temperature monitoring signal, with controller signal connection has and is used for acquireing absorption refrigerator refrigerating system and is used for the real-time running temperature of refrigeration part and \ or acquireing absorption refrigerator refrigerating system non-heat dissipation part's real-time running temperature and generate temperature monitoring signal's dongle (7), the controller and the dongle with the output electrical connection of transformer, the controller with switch control system connects.
6. The absorption refrigerator refrigeration system damage prediction device of claim 5 further comprising:
the temperature sensing probe (8) is used for acquiring the real-time temperature of the inner chamber of the absorption refrigerator and generating an auxiliary monitoring signal, the temperature sensing probe is electrically connected with the output end of the transformer, and the temperature sensing probe is in signal connection with the controller.
7. The absorption refrigerator refrigerating system damage prediction device according to claim 5 or 6,
the electronic dog comprises a first electronic dog and a second electronic dog;
the first electronic dog is arranged on an evaporator part of the absorption refrigerator refrigerating system and used for acquiring the surface temperature of the evaporator part of the absorption refrigerator refrigerating system;
the second electronic dog is arranged on the separator part of the absorption refrigerator refrigerating system and used for acquiring the surface temperature of the separator part of the absorption refrigerator refrigerating system.
8. The absorption refrigerator refrigerating system damage prediction device according to claim 5,
and an antibacterial PVC shell is arranged on the outer side of the electronic dog.
9. The absorption refrigerator refrigerating system damage prediction device according to claim 8,
and a moisture-proof layer is arranged between the electronic dog and the antibacterial PVC shell, and the antibacterial PVC shell is fixedly arranged on the liner of the absorption refrigerator through bolts.
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| CN202011137661.0A CN112229126A (en) | 2020-10-22 | 2020-10-22 | Absorption refrigerator refrigerating system damage pre-judging method and device |
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| CN202011137661.0A CN112229126A (en) | 2020-10-22 | 2020-10-22 | Absorption refrigerator refrigerating system damage pre-judging method and device |
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| CN112229126A true CN112229126A (en) | 2021-01-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447162A (en) * | 2021-06-29 | 2021-09-28 | 中海石油深海开发有限公司 | Bearing temperature monitoring method and bearing temperature monitoring system |
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