CN115751823A - Anti-condensation system of air return pipe and refrigerator - Google Patents
Anti-condensation system of air return pipe and refrigerator Download PDFInfo
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- CN115751823A CN115751823A CN202211658982.4A CN202211658982A CN115751823A CN 115751823 A CN115751823 A CN 115751823A CN 202211658982 A CN202211658982 A CN 202211658982A CN 115751823 A CN115751823 A CN 115751823A
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- temperature
- evaporator
- condensation
- return pipe
- tail end
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- 238000009833 condensation Methods 0.000 title claims abstract description 68
- 238000010438 heat treatment Methods 0.000 claims abstract description 62
- 230000005494 condensation Effects 0.000 claims abstract description 60
- 238000001514 detection method Methods 0.000 claims abstract description 40
- 238000005057 refrigeration Methods 0.000 claims abstract description 18
- 239000004065 semiconductor Substances 0.000 claims description 29
- 238000010257 thawing Methods 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 230000002265 prevention Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 10
- 239000003507 refrigerant Substances 0.000 abstract description 5
- 239000003990 capacitor Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920006217 cellulose acetate butyrate Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000011540 sensing material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000005676 thermoelectric effect Effects 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
The invention discloses an air return pipe condensation preventing system and a refrigerator, and relates to the technical field of refrigeration. The method specifically comprises the following steps: the first temperature detection piece is used for detecting the tail end temperature of the return air pipe and the temperature of the environment where the compressor is located; a first humidity detecting member for detecting an ambient humidity of the compressor; the first heating element is used for heating the tail end of the air return pipe; and the control unit is used for acquiring the tail end condensation temperature of the current air return pipe according to the detection results of the temperature detection piece and the humidity detection piece, and controlling the heating piece to heat the tail end of the air return pipe according to the tail end condensation temperature of the current air return pipe so as to enable the tail end temperature of the air return pipe to be greater than the condensation temperature. The aim is to avoid condensation at the tail end of a compressor air return pipe in a refrigerant circulation loop.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to an air return pipe condensation preventing system and a refrigerator.
Background
The air-cooled refrigerator has become the mainstream of the market at present, has the main advantages of automatic defrosting and ensuring that the interior of the refrigerator does not frost, and adopts the principle that a fan rotates at a high speed to continuously supply air to the room so as to achieve the purposes of refrigeration and freezing refrigeration, and defrosting at the right time according to a defrosting program.
Because the inadequacy during the inconsistency and the design of production, refrigerator muffler end often can produce the condensation, is not conform to the national requirement, and its condensation water drips and causes the compressor bottom plate to rust, and condensation water is too much or even flows out the compressor, causes the equipment to use the potential safety hazard. The reason is that the temperature of the refrigerant entering the air return pipe from the evaporator is not sufficiently raised, so that the tail end of the air return pipe is condensed, and particularly in summer or plum rain season, the dew point temperature of air is high, and condensation is more easily generated. In order to solve the technical problems, the tail end of the air return pipe is wrapped by a heat preservation pipe at present to solve the condensation problem, but the condensation problem is not solved essentially.
Therefore, how to avoid the condensation generated at the tail end of the compressor muffler in the refrigerant circulation loop becomes a technical problem to be solved urgently.
Disclosure of Invention
The invention mainly aims to provide an air return pipe condensation preventing system and a refrigerator, aiming at avoiding condensation generated at the tail end of an air return pipe of a compressor in a refrigerant circulation loop.
In order to achieve the above object, the present invention provides a muffler condensation prevention system, including:
the first temperature detection piece is used for detecting the tail end temperature of the return air pipe and the temperature of the environment where the compressor is located;
a first humidity detection member for detecting an ambient humidity of the compressor;
the first heating element is used for heating the tail end of the air return pipe; and
the control unit acquires the tail end condensation temperature of the current air return pipe according to the detection results of the temperature detection piece and the humidity detection piece, and controls the heating piece to heat the tail end of the air return pipe according to the tail end condensation temperature of the current air return pipe so that the tail end temperature of the air return pipe is greater than the condensation temperature.
In an embodiment of the present application, the first heating element is a first semiconductor cooling device.
In an embodiment of the present application, the hot end of the first semiconductor refrigeration device faces the end of the return air pipe, and the cold end of the semiconductor refrigeration device faces the compartment.
In an embodiment of the present application, the method further includes:
the second temperature detection piece is used for detecting the ambient temperature of the evaporator;
the second heating element is arranged at the bottom of the evaporator and is used for heating and defrosting the evaporator;
the control unit acquires the ambient temperature of the evaporator detected by the second temperature detection part, judges whether the ambient temperature of the evaporator meets a preset threshold value or not, and controls the second heating part to heat and defrost the evaporator if the ambient temperature of the evaporator does not meet the preset threshold value.
In one embodiment of the present application, the second heating member is a steel tube heater.
In an embodiment of the present application, the method further includes:
and the third heating element is arranged at the top of the evaporator and used for heating and defrosting the top of the evaporator.
In an embodiment of the present application, the method further includes: the pressure sensor is arranged on the evaporator and used for detecting the surface pressure of the evaporator;
and the control unit controls the third heating element to heat and defrost the top of the evaporator according to the detection result of the pressure sensor.
In an embodiment of the present application, the third heating element is a second semiconductor refrigeration device, a hot end of the second semiconductor refrigeration device faces the evaporator, and a cold end of the semiconductor refrigeration device faces the compartment.
The application also discloses a refrigerator, which adopts the air return pipe condensation preventing system.
According to the technical scheme, the tail end temperature of the air return pipe and the temperature of the environment where the compressor is located are detected through the first detection piece, the first humidity detection piece detects the environment humidity of the compressor, the control unit obtains the lowest condensation temperature from the condensation thermometer according to the temperature of the environment where the compressor is located and the environment humidity of the compressor, then whether the tail end temperature of the air return pipe is larger than the lowest condensation temperature or not is judged, and when the tail end temperature of the air return pipe is larger than the lowest condensation temperature, the condensation phenomenon does not occur at present; when the terminal temperature of muffler is less than minimum condensation temperature, the condensation can appear, and the control unit control first heating member heats the muffler end this moment to thoroughly avoid the terminal condition of producing the condensation of muffler of compressor to appear, simple structure, the implementation of being convenient for.
Drawings
The invention is described in detail below with reference to specific embodiments and the attached drawing figures, wherein:
fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and examples. It should be understood that the following specific examples are only for illustrating the present invention and are not to be construed as limiting the present invention.
In order to achieve the above object, the present invention provides a muffler condensation prevention system, including:
the first temperature detection piece is used for detecting the tail end temperature of the return air pipe and the temperature of the environment where the compressor is located;
a first humidity detection member for detecting an ambient humidity of the compressor;
the first heating element is used for heating the tail end of the air return pipe; and
the control unit acquires the tail end condensation temperature of the current air return pipe according to the detection results of the temperature detection piece and the humidity detection piece, and controls the heating piece to heat the tail end of the air return pipe according to the tail end condensation temperature of the current air return pipe so that the tail end temperature of the air return pipe is greater than the condensation temperature.
Concretely, condensation system is prevented to muffler, includes that first temperature detects a piece, a humidity detection piece, first heating member and the control unit.
The first temperature detection element is a sensor which can sense temperature and convert the temperature into a usable output signal. The method is divided into a thermal resistor and a thermocouple. Since it is the prior art, the specific work flow and structure thereof are not described in detail herein. First temperature detect spare in this application adopts the thermocouple, and the thermocouple has advantages such as sensitivity is high, detect temperature accuracy height. The first temperature detection piece is used for detecting the tail end temperature of the return air pipe and detecting the ambient temperature of the compressor.
The first humidity detecting part is one humidity detecting part available in available technology and includes two types, one resistance type and one capacitance type, in which the resistance type is one humidity sensing film with one humidity sensing material coated on the substrate.
The humidity-sensitive capacitor is generally made of a polymer film capacitor, and commonly used polymer materials include polystyrene, polyimide, cellulose acetate butyrate and the like. When the environmental humidity changes, the dielectric constant of the humidity sensitive capacitor changes, so that the capacitance of the humidity sensitive capacitor also changes, and the capacitance change is in direct proportion to the relative humidity.
First humidity detects the piece and is used for detecting the ambient humidity of compressor, through obtaining ambient humidity and ambient temperature in the compressor, can acquire the minimum condensation temperature under this temperature to the condensation thermometer.
The first heating element is a heating element commonly used in the prior art, and can be a steel pipe type heater or a semiconductor refrigerating device. The steel tube type heater has the advantages of simple heater control, large heat productivity, high energy consumption conversion efficiency and the like. The semiconductor type refrigerating device has the advantages of small volume, convenient installation, convenient control and the like. The first heating element is used for heating the tail end of the air return pipe. The tail end of the air return pipe is heated in a heat radiation mode, so that the safety of the compressor air return pipe in use is improved.
The control unit is a control unit commonly used in the prior art, such as a central processing unit and the like. The control unit acquires the temperature of the compressor environment and the ambient humidity of the compressor environment, the temperature of the compressor environment and the ambient humidity of the compressor environment are detected by the first temperature detection piece, the corresponding lowest condensation temperature is acquired in the condensation thermometer according to the temperature of the compressor environment and the ambient humidity of the compressor environment, the control unit acquires the tail end temperature of the air return pipe, whether the tail end temperature of the air return pipe is larger than the lowest condensation temperature is judged, and when the tail end temperature of the air return pipe is larger than the lowest condensation temperature, the first heating piece does not work. When the terminal temperature of muffler was less than minimum condensation temperature, expressed and to produce the condensation on the muffler is terminal, and the control unit control first heating member heats the muffler end this moment, improves the terminal temperature of muffler, makes the terminal temperature of muffler be greater than minimum condensation temperature to avoid producing the condensation on the muffler end. Simple structure and convenient implementation.
According to the technical scheme, the tail end temperature of the air return pipe and the temperature of the environment where the compressor is located are detected through the first detection piece, the first humidity detection piece detects the environment humidity of the compressor, the control unit obtains the lowest condensation temperature from the condensation thermometer according to the temperature of the environment where the compressor is located and the environment humidity of the compressor, then whether the tail end temperature of the air return pipe is larger than the lowest condensation temperature or not is judged, and when the tail end temperature of the air return pipe is larger than the lowest condensation temperature, the condensation phenomenon does not occur at present; when the terminal temperature of muffler was less than minimum condensation temperature, the condensation can appear, and the control unit control first heating member heats the muffler end this moment to thoroughly avoid the terminal condition that produces the condensation of muffler of compressor to appear, simple structure, be convenient for implement.
In an embodiment of the present application, the first heating element is a first semiconductor cooling device.
Specifically, the first heating element is a first semiconductor refrigerating device, and the first semiconductor refrigerating device is a device for producing cold by using a thermoelectric effect of a semiconductor, and is also called a thermoelectric refrigerator. When two different metals are connected by a conductor and direct current is applied, the temperature at one junction is reduced and the temperature at the other junction is increased.
The semiconductor refrigerator has the characteristics of no noise, no vibration, no need of refrigerant, small volume, light weight and the like, and has the advantages of reliable work, simple and convenient operation and easy cold quantity regulation.
In an embodiment of the present application, the hot end of the first semiconductor refrigeration device faces the end of the return air pipe, and the cold end of the semiconductor refrigeration device faces the compartment.
Specifically, first semiconductor refrigerating plant's hot junction is terminal towards the muffler, heats the muffler end through the mode of heat radiation, has improved the stability of the terminal during operation of muffler, also avoids producing the condensation on the muffler end simultaneously, and first semiconductor refrigerating plant's cold junction is towards the room, and it can provide cold volume for the room.
By adopting the technical scheme, the structure is simple and the implementation is convenient.
In an embodiment of the present application, the method further includes:
the second temperature detection piece is used for detecting the ambient temperature of the evaporator;
the second heating element is arranged at the bottom of the evaporator and used for heating and defrosting the evaporator;
the control unit obtains the ambient temperature of the evaporator detected by the second temperature detection piece, judges whether the ambient temperature of the evaporator meets a preset threshold value or not, and controls the second heating piece to heat and defrost the evaporator if the ambient temperature of the evaporator does not meet the preset threshold value.
Specifically, a muffler prevents condensation system still includes: a second temperature detecting member and a second heating member.
The second temperature detection piece is used for detecting the ambient temperature of the evaporator, is the same as the first temperature detection piece, has the same advantages and structures, and is not repeated here.
The second heating member sets up in the bottom of evaporimeter for heat the defrosting to the evaporimeter. The control unit firstly obtains the ambient temperature of the evaporator detected by the second temperature detection piece, judges whether the ambient temperature of the evaporator meets a preset threshold value, and if the ambient temperature of the evaporator does not meet the preset threshold value, the control unit controls the second heating piece to continuously heat the evaporator to achieve defrosting of the evaporator, which means that defrosting is not finished currently. And if the temperature of the environment where the evaporator is located meets a preset threshold value, the current defrosting process is finished, and the control unit controls the second heating element to stop working at the moment.
By adopting the technical scheme, the structure is simple and convenient to implement.
In one embodiment of the present application, the second heating member is a steel tube heater.
Specifically, the second heating member is steel pipe heater, and steel pipe heater has advantages such as heating efficiency is high, control is convenient.
In an embodiment of the present application, the method further includes:
and the third heating element is arranged at the top of the evaporator and used for heating and defrosting the top of the evaporator.
The utility model discloses a defrosting efficiency, simple structure, the implementation of being convenient for that the evaporimeter top is improved to the all-round defrosting of evaporimeter is realized to the third heating member that heats of evaporimeter top still including locating the evaporimeter top, and the third heating member sets up with the second heating member is relative, mutually supports each other.
In an embodiment of the present application, the method further includes: the pressure sensor is arranged on the evaporator and used for detecting the surface pressure of the evaporator;
and the control unit controls the third heating element to heat and defrost the top of the evaporator according to the detection result of the pressure sensor.
Specifically, the device comprises a pressure sensor arranged on the evaporator and used for detecting the surface pressure of the evaporator, the pressure sensor is a common pressure sensor in the prior art, the pressure sensor is arranged to detect whether frost exists on the surface of the evaporator, and when the pressure of the pressure sensor is not zero, the frost exists on the surface of the evaporator. When the pressure of the pressure sensor is zero, it indicates that the frost on the surface of the evaporator has been completely removed.
The control unit controls the third heating element to heat and defrost the top of the evaporator according to the detection result of the pressure sensor. The control flow is that when the pressure of the pressure sensor is not zero, the frost is on the surface of the evaporator, and the control unit controls the third heating element to heat and defrost the top of the evaporator. When the pressure of the pressure sensor is zero, the frost is not on the surface of the evaporator, and the control unit controls the third heating element not to work.
By adopting the technical scheme, the process is simple and convenient to implement.
In an embodiment of the present application, the third heating element is a second semiconductor refrigeration device, a hot end of the second semiconductor refrigeration device faces the evaporator, and a cold end of the semiconductor refrigeration device faces the compartment.
Specifically, the third heating member is a second semiconductor refrigerating device, and the second semiconductor refrigerating device is the same as the first semiconductor refrigerating device, has the same advantages and structure, and is not repeated herein.
The hot junction of second semiconductor refrigerating plant is towards the evaporimeter to the realization is defrosted the top of evaporimeter, and the cold junction of second semiconductor refrigerating plant is towards the compartment, realizes the cold volume of supplementing to the compartment. Simple structure and convenient implementation.
The application also discloses a refrigerator, which adopts the air return pipe condensation preventing system.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, which are directly or indirectly applied to the present invention, are included in the scope of the present invention.
Claims (9)
1. A muffler condensation prevention system, comprising:
the first temperature detection piece is used for detecting the tail end temperature of the return air pipe and the temperature of the environment where the compressor is located;
a first humidity detection member for detecting an ambient humidity of the compressor;
the first heating element is used for heating the tail end of the air return pipe; and
the control unit acquires the tail end condensation temperature of the current air return pipe according to the detection results of the temperature detection piece and the humidity detection piece, and controls the heating piece to heat the tail end of the air return pipe according to the tail end condensation temperature of the current air return pipe so that the tail end temperature of the air return pipe is larger than the condensation temperature.
2. The muffler anti-condensation system of claim 1, wherein the first heating element is a first semiconductor refrigeration device.
3. The muffler anti-condensation system of claim 2, wherein the hot end of the first semiconductor refrigeration device is directed toward the muffler end and the cold end of the semiconductor refrigeration device is directed toward the compartment.
4. The muffler condensation prevention system of claim 1, further comprising:
the second temperature detection piece is used for detecting the ambient temperature of the evaporator;
the second heating element is arranged at the bottom of the evaporator and is used for heating and defrosting the evaporator;
the control unit acquires the ambient temperature of the evaporator detected by the second temperature detection part, judges whether the ambient temperature of the evaporator meets a preset threshold value or not, and controls the second heating part to heat and defrost the evaporator if the ambient temperature of the evaporator does not meet the preset threshold value.
5. The muffler condensation prevention system of claim 4, wherein the second heating element is a steel tube heater.
6. The muffler anti-condensation system of claim 4, further comprising:
and the third heating element is arranged at the top of the evaporator and used for heating and defrosting the top of the evaporator.
7. The muffler anti-condensation system of claim 6, further comprising: the pressure sensor is arranged on the evaporator and used for detecting the surface pressure of the evaporator;
and the control unit controls the third heating element to heat and defrost the top of the evaporator according to the detection result of the pressure sensor.
8. The muffler anti-condensation system of claim 6, wherein the third heating element is a second semiconductor refrigeration device having a hot end facing the evaporator and a cold end facing the compartment.
9. A refrigerator characterized in that the muffler anti-condensation system as claimed in any one of claims 1 to 8 is employed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211658982.4A CN115751823A (en) | 2022-12-22 | 2022-12-22 | Anti-condensation system of air return pipe and refrigerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211658982.4A CN115751823A (en) | 2022-12-22 | 2022-12-22 | Anti-condensation system of air return pipe and refrigerator |
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| CN115751823A true CN115751823A (en) | 2023-03-07 |
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| CN202211658982.4A Pending CN115751823A (en) | 2022-12-22 | 2022-12-22 | Anti-condensation system of air return pipe and refrigerator |
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| CN108931087A (en) * | 2017-05-26 | 2018-12-04 | 博西华电器（江苏）有限公司 | A kind of refrigerating appliance |
| CN108019989A (en) * | 2017-12-07 | 2018-05-11 | 合肥美的电冰箱有限公司 | A kind of refrigeration system and refrigerator |
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| CN110388783A (en) * | 2018-04-17 | 2019-10-29 | 博西华电器（江苏）有限公司 | Refrigeration equipment and control method |
| CN112747526A (en) * | 2019-10-31 | 2021-05-04 | 青岛海尔电冰箱有限公司 | Refrigerator with a door |
| CN111238135A (en) * | 2020-01-09 | 2020-06-05 | 合肥华凌股份有限公司 | Control method and device for preventing condensation of refrigeration equipment, refrigeration equipment and medium |
| CN113970212A (en) * | 2021-10-18 | 2022-01-25 | 海信（山东）冰箱有限公司 | Refrigerator and refrigerator defrosting method |
| CN113983728A (en) * | 2021-10-18 | 2022-01-28 | 珠海格力电器股份有限公司 | Defrosting method, device and equipment for evaporator and temperature adjusting system |
| CN217275069U (en) * | 2022-04-07 | 2022-08-23 | 青岛海尔智能技术研发有限公司 | Refrigeration device |
| CN217465051U (en) * | 2022-04-07 | 2022-09-20 | 青岛海尔智能技术研发有限公司 | Refrigeration device |
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