CN114111158A - Refrigerator with a door - Google Patents
Refrigerator with a door Download PDFInfo
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- CN114111158A CN114111158A CN202010865172.0A CN202010865172A CN114111158A CN 114111158 A CN114111158 A CN 114111158A CN 202010865172 A CN202010865172 A CN 202010865172A CN 114111158 A CN114111158 A CN 114111158A
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- storage space
- air
- temperature
- refrigerator
- pump
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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
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
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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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
- F25D17/045—Air flow control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- 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
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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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/04—Treating air flowing to refrigeration compartments
- F25D2317/043—Treating air flowing to refrigeration compartments by creating a vacuum in a storage compartment
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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
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention provides a refrigerator, which comprises a first storage space and an air extractor, wherein a pump inlet of the air extractor is communicated with the first storage space so as to extract part or all of gas in the first storage space; the refrigerator also comprises a temperature control type heat conduction device; the air extraction device comprises a pump head with an outlet and a motor, and the temperature-controlled heat conduction device is configured to transfer heat generated by the motor to the pump head and to interrupt heat transfer after the temperature of the pump head reaches a preset temperature. By arranging the temperature control type heat conduction device, when the temperature of the pump head is low, the pump head is prevented from frosting and freezing by utilizing high-temperature heating generated by the motor; when the pump head temperature is high, the heat transfer is disconnected, and the high temperature on the motor is prevented from continuously heating the pump head. The pump head can be prevented or frosted, the performance of the vacuum pump is guaranteed, and the reliability of the vacuum pump is prolonged.
Description
Technical Field
The invention relates to the technical field of refrigerator storage, in particular to a refrigerator.
Background
The refrigerator is a refrigerating device for keeping constant low temperature, and is a civil product for keeping food or other articles in a constant low-temperature cold state. With the social development, the quality of life is higher and higher, the pace of life is faster and faster, and the requirement for keeping things fresh is increased. The development of the preservation technology of the refrigerator is promoted, and the vacuum preservation and oxygen reduction preservation technology is an important development direction.
Disclosure of Invention
The inventor of the invention finds that the vacuum preservation and the oxygen reduction preservation both need a vacuum pump at present, are generally applied to a refrigerating chamber, and are not applied to a chamber below the freezing point. When the inventor uses the oxygen reduction fresh-keeping in the compartment below the freezing point, the inventor particularly finds that the air below the freezing point can generate frost and ice at the pump head of the vacuum pump, and the performance of the vacuum pump is influenced. Based on the refrigerator, the invention provides the refrigerator which can reduce or prevent frosting and icing at a pump head and ensure the performance of a vacuum pump.
The refrigerator comprises a first storage space and an air extracting device, wherein a pump inlet of the air extracting device is communicated with the first storage space so as to extract part or all of gas in the first storage space; the refrigerator also comprises a temperature control type heat conduction device;
the air extraction device comprises a pump head with an outlet and a motor, and the temperature-controlled heat conduction device is configured to transfer heat generated by the motor to the pump head and to interrupt heat transfer after the temperature of the pump head reaches a preset temperature.
Optionally, the refrigerator further comprises a first air regulating membrane module, and the pump inlet of the air pumping device is communicated with the first air regulating membrane module so that oxygen in the first storage space flows out of the first storage space more than nitrogen in the first storage space through the first air regulating membrane module.
Optionally, the motor comprises a motor housing, and the motor housing and the pump head are both thermally connected to the temperature controlled heat transfer device.
Optionally, the temperature-controlled heat conducting device is a bimetallic strip.
Optionally, the refrigerator further comprises an exhaust pipe wound around the motor housing, and an inlet of the exhaust pipe is communicated with the pump outlet on the pump head.
Optionally, the exhaust pipe is made of a heat conducting material, and the temperature-controlled heat conducting device is thermally connected with the motor housing through the exhaust pipe.
Optionally, the exhaust pipe includes an inlet pipe section, a winding pipe section and an outlet pipe section, the inlet pipe section and the outlet pipe section are connected to two ends of the winding pipe section, the winding pipe section is wound around the motor housing, and the temperature-controlled heat conduction device is thermally connected to an end of the outlet pipe section connected to the winding pipe section.
Optionally, a metal sheet is arranged on the exhaust pipe, and the metal sheet is thermally connected with the temperature-controlled heat conduction device.
Optionally, the air exhaust device is a vacuum pump, and an inlet of the exhaust pipe is communicated with the outlet of the pump through a flexible pipe.
Optionally, the refrigerator further comprises a second storage space, a second gas regulating membrane module and a valve, the first gas regulating membrane module is communicated with one inlet of the valve, the second gas regulating membrane module is communicated with the other inlet of the valve, and the pump inlet of the air extractor is communicated with the outlet of the valve, so that oxygen in the first storage space flows out of the first storage space more than nitrogen in the first storage space through the first gas regulating membrane module, and oxygen in the second storage space flows out of the second storage space more than nitrogen in the second storage space through the second gas regulating membrane module.
Optionally, the storage temperature in the first storage space is higher than the storage temperature in the second storage space; the valve is configured to enable the air extracting device to be communicated with the first air regulating membrane assembly for a first preset time period and then to be switched to enable the air extracting device to be communicated with the second air regulating membrane assembly, and enable the air extracting device to be communicated with the first air regulating membrane assembly for a second preset time period and then to be switched to enable the air extracting device to be communicated with the first air regulating membrane assembly, so that oxygen can be reduced for the second storage space alternatively or for the first storage space and the second storage space simultaneously.
In the refrigerator, the temperature control type heat conduction device is arranged, so that when the temperature of the pump head is low, the pump head is prevented from frosting and freezing by utilizing high-temperature heating generated by the motor; when the pump head temperature is high, the heat transfer is disconnected, and the high temperature on the motor is prevented from continuously heating the pump head. The pump head can be prevented or frosted, the performance of the vacuum pump is guaranteed, and the reliability of the vacuum pump is prolonged.
Furthermore, in the refrigerator, the outlet of the pump is connected with the exhaust pipe, the temperature of the motor is reduced by the cold air through the exhaust pipe through temperature conduction, the temperature of the motor is reduced by the high-speed air through forced convection of the exhaust pipe, and noise reduction is realized by prolonging the total length of the exhaust pipe. The service life of the air exhaust device is prevented from being influenced by the overhigh temperature of the motor, the noise generated by the air exhaust device can be reduced, and the user experience effect is improved. The temperature control type heat conduction device can also prevent the heat dissipation effect of the motor from being influenced by continuously heating the pump head.
Furthermore, in the refrigerator, when the low-temperature chamber needs to be subjected to oxygen reduction, the frosting or defrosting is prevented by using the air with the temperature higher than the freezing point in a manner of allowing the high-temperature chamber and the low-temperature chamber to be subjected to alternate oxygen reduction, so that the water vapor in the pipeline is prevented from being condensed into frost or ice crystals by the low-temperature air in the low-temperature chamber oxygen reduction process, the ice crystals generated in the air extraction pipeline can be reduced or prevented, the frost of the valve and the like is prevented, the valve, the vacuum pump and the like can be protected, and the service life is prolonged. Further, when the high-temperature chamber and the low-temperature chamber both need to reduce oxygen, the oxygen reduction efficiency can be improved by alternately carrying out the oxygen reduction, and the energy-saving effect is obvious.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic structural view of a refrigerator according to one embodiment of the present invention;
FIG. 2 is a schematic partial block diagram of the refrigerator shown in FIG. 1;
FIG. 3 is a schematic block diagram of an air extractor in the refrigerator of FIG. 1;
fig. 4 is a schematic structural view of a refrigerator according to one embodiment of the present invention;
fig. 5 is a schematic partial structural view of the refrigerator shown in fig. 4.
Detailed Description
Fig. 1 is a schematic structural view of a refrigerator according to one embodiment of the present invention. In some embodiments of the present invention, as shown in FIG. 1 and with reference to FIGS. 2 and 3, the refrigerator includes a refrigeration system, a first storage space 21, a first air adjustment assembly, and a suction device 40. The refrigeration system is configured to provide cooling energy into the first storage space 21. The first storage space 21 may be a refrigerating compartment 23 of the refrigerator or a space within the refrigerating compartment 23. In some alternative embodiments, the first storage space 21 is a variable temperature compartment 25 of a refrigerator. The pump inlet of the gas-withdrawal device 40 communicates with the first modified atmosphere module to allow more oxygen in the first storage space 21 to flow out of the first storage space 21 relative to nitrogen in the first storage space 21 through the first modified atmosphere module. The air may have a velocity acting on the air-extracting means 40.
Because of the air-conditioning membrane component, a nitrogen-rich and oxygen-poor gas atmosphere which is beneficial to food preservation can be formed in the corresponding storage space, the oxygen content in the fruit and vegetable preservation space is reduced, the aerobic respiration intensity of the fruit and vegetable is reduced, the basic respiration is ensured, and the fruit and vegetable is prevented from being subjected to anaerobic respiration, so that the purpose of long-term preservation of the fruit and vegetable is achieved. The method can also realize the air-conditioned short-term meat preservation at low temperature, improve the taste, nutrition, flavor and appearance of the meat, reduce the oxidation strength of the meat by reducing the oxygen content in the meat preservation space, and inhibit the aerobic bacteria contained in the meat under the condition of low oxygen, thereby achieving the purpose of meat preservation.
Further, as shown in fig. 3, the refrigerator further includes a temperature controlled heat conduction device 50. The air-extracting means 40 comprises a pump head 41 having a pump outlet and a motor, and the temperature controlled thermally conductive apparatus 50 is configured to transfer heat generated by the motor to the pump head 41, and to interrupt the heat transfer after the temperature of the pump head 41 reaches a preset temperature. For example, the motor includes a motor housing 42, and both the motor housing 42 and the pump head 41 are thermally coupled to a temperature controlled heat transfer device 50.
Specifically, the air extractor 40 is a vacuum pump, the heat generated by the vacuum pump is concentrated on the motor part, namely, the key part of cooling, and when the temperature of the pump head 41 is low, the pump head 41 is connected with the motor shell 42 and heated by the high temperature of the pump head 41, so that the pump head 41 is prevented from frosting and freezing by arranging the temperature control type heat conduction device 50; when the pump head 41 is at a high temperature, the heat transfer is interrupted, preventing the high temperature on the motor from continuously heating the pump head 41. Further, the motor shell 42 is directly used for cooling, the structure of the motor and the air extracting device 40 is not changed, the practicability is high, and the cost is low.
In some alternative embodiments of the present invention, the first storage space 21 may be an evacuated space, that is, the first storage space 21 is not communicated with the air pumping device 40 through the first air-conditioning membrane module, so as to pump out part or all of the air in the first storage space 21 for vacuum preservation.
Preferably, the temperature controlled thermally conductive assembly 50 is a bimetallic strip. The bimetallic strip is thermally connected with the motor shell 42 when the temperature of the front bimetallic strip of the pump head 41 is low, the bimetallic strip deforms and springs open when the temperature of the pump head 41 is high, the heat transfer is cut off, and after the temperature is reduced, the bimetallic strip resets to carry out the heat transfer. The bimetallic strip is used as the temperature control type heat conduction device 50, so that the structure is simple, the cost is low, and the service life is long.
In some embodiments of the present invention, the refrigerator further comprises an exhaust pipe 43, the exhaust pipe 43 is wound around the motor housing 42, and an inlet of the exhaust pipe 43 is communicated with an outlet of the pump on the pump head 41. Specifically the inlet of the exhaust pipe 43 communicates with the pump outlet through a flexible pipe 44. The flexible pipe 44 can be the plastic pipe, connects exhaust pipe 43 at the pump of vacuum pump export with the plastic pipe, and the cold air passes through exhaust pipe 43 and realizes the motor temperature reduction through the temperature conduction, and the high-speed air forces the convection current to realize the motor temperature reduction through exhaust pipe 43, falls the noise through the realization of extension exhaust total length. In the present application, it will be appreciated by those skilled in the art that the term "flexible pipe" is used to refer to a pipe, which may also be referred to as a hose, having some ability to deform and recover when subjected to an external force, to facilitate the installation of the exhaust pipe.
In some embodiments of the present invention, the exhaust pipe 43 is made of a heat conductive material, and the temperature-controlled heat conduction device 50 is thermally connected to the motor housing 42 through the exhaust pipe 43. Specifically, the exhaust pipe 43 includes an inlet pipe section, a winding pipe section, and an outlet pipe section, which are connected to both ends of the winding pipe section, the winding pipe section being wound around the motor housing 42. The temperature controlled thermally conductive assembly 50 is thermally coupled to the end of the outlet tube section that is attached to the winding tube section. For example, the exhaust pipe 43 is provided with a metal sheet 45, and the metal sheet 45 is thermally connected to the temperature-controlled heat conduction device 50. The heat is transferred through the exhaust pipe 43, so that the temperature of the pump head 41 is not increased too fast or too high, the temperature of the pump head 41 is not changed frequently, the temperature-controlled heat conduction device 50 is not operated frequently, and the service life and the performance of the pump head 41 are not affected. When the flexible tube 44 is a plastic tube, it can prevent the heat of the motor housing 42 from being transferred to the pump head 41 through the exhaust tube 43. In some alternative embodiments, the inlet of the exhaust pipe 43 communicates with the outlet of the pump through a thermal insulation pipe. The heat-insulating pipe may be a pipe having a thermal conductivity lower than a preset value and capable of transmitting an air flow.
In some embodiments of the invention, as shown in fig. 4 and 5, the refrigerator further comprises a second storage space 22, a second modified atmosphere module and a valve 31. The first gas regulating assembly is in communication with one inlet of the valve 31, the second gas regulating assembly is in communication with the other inlet of the valve 31, and the gas-withdrawal device 40 is in communication with the outlet of the valve 31 to allow more oxygen in the first storage space 21 to flow out of the first storage space 21 relative to nitrogen in the first storage space 21 through the first gas regulating assembly and more oxygen in the second storage space 22 to flow out of the second storage space 22 relative to nitrogen in the second storage space 22 through the second gas regulating assembly. The valve 31 is preferably a three-way valve. Two or more modified atmosphere storage spaces may be deoxygenated. In some embodiments of the present invention, other storage compartments that do not require oxygen reduction, such as freezer compartment 24, may also be present within the refrigerator.
In some embodiments of the invention, the first storage space 21 and the second storage space 22 may be referred to as a modified atmosphere storage space, a receiving cavity is provided in a top wall of the modified atmosphere storage space, and the first modified atmosphere module and the second modified atmosphere module may be referred to as modified atmosphere modules, both mounted to the respective receiving cavities. Preferably, the first and second modified atmosphere modules may be of a planar form, the modified atmosphere modules comprising a support frame and a modified atmosphere. The controlled atmosphere membranes are preferably oxygen-enriched membranes, and can be two, and the two controlled atmosphere membranes are arranged on two sides of the supporting frame, so that the two controlled atmosphere membranes and the supporting frame jointly enclose the oxygen-enriched gas collecting cavity. A first vent hole and a second vent hole are formed in a wall surface between the receiving cavity of the top wall of the modified atmosphere storage space and the inner side of the modified atmosphere storage space. The first vent hole is spaced apart from the second vent hole to communicate the receiving cavity with the modified atmosphere storage space at different locations, respectively. The first vent hole and the second vent hole are both small holes, and the number of the first vent hole and the second vent hole can be multiple. The receiving chamber may also be provided with a blower configured to cause gas in the modified atmosphere storage space to enter the receiving chamber via the first vent and to cause gas in the receiving chamber to enter the modified atmosphere storage space via the second vent. That is, the blower may cause the gas in the modified atmosphere storage space to return to the modified atmosphere storage space through the first vent, the holding chamber, and the second vent in sequence. The fan is preferably a centrifugal fan, and the air inlet is opposite to the first air vent. The air outlet of the centrifugal fan can face the modified atmosphere membrane component.
In some embodiments of the present invention, the temperature of the stored air in the first storage space 21 is higher than that of the stored air in the second storage space 22, for example, the first storage space 21 is a cold storage compartment, the second storage space 22 is a temperature-changing storage compartment, the temperature of the air pumped out from the first storage space 21 is generally between 0 ℃ and 10 ℃, and the temperature of the air pumped out from the second storage space 22 is generally between-8 ℃ and 10 ℃.
The valve 31 may be configured to switch the air extracting device 40 to communicate with the second air regulating module after the air extracting device 40 communicates with the first air regulating module for a first predetermined period of time, and to switch the air extracting device 40 to communicate with the first air regulating module after the air extracting device 40 communicates with the second air regulating module for a second predetermined period of time, to operate alternately to deoxygenate the second storage space 22, or to deoxygenate both the first storage space 21 and the second storage space 22. The alternate operation can prevent the air extractor 40 from damaging and the valve 31 from frosting caused by the long-time low-temperature air suction of the air extractor 40.
Further, the valve 31 is also configured to communicate the air extracting device 40 with the first air regulating membrane module for a fourth preset time when the second storage space 22 finishes oxygen reduction when only the second storage space 22 is subjected to oxygen reduction. The three-way valve can be prevented from being easily frosted when being in the low temperature stage finally. The alternative operation is carried out, the low-temperature air in the oxygen reduction process of the temperature-changing chamber is prevented from condensing the water vapor in the pipeline into frost or ice crystals, and the refrigerated air with the temperature higher than the freezing point is used for preventing the frost from forming or defrosting.
In some embodiments of the present invention, when the first storage space 21 and the second storage space 22 both require oxygen reduction or only the second storage space 22 requires oxygen reduction, the air extraction device 40 is opened, and the valve 31 is controlled to first communicate the air extraction device 40 with the first air conditioning membrane module, and then the valve 31 communicates the air extraction device 40 with the first air conditioning membrane module for a first preset time period, and then the air extraction device 40 with the second air conditioning membrane module is switched to communicate, and then the valve 31 communicates the air extraction device 40 with the second air conditioning membrane module for a second preset time period, and then the air extraction device 40 with the first air conditioning membrane module is switched to communicate.
That is, when the second storage space 22 needs to be deoxygenated, the valve 31 first connects the air extractor 40 to the first air regulating membrane module, so as to prevent the air extractor 40 from being damaged by directly pumping low-temperature air during the starting of the air extractor 40, and also prevent frosting or defrosting. The alternate operation can prevent the air extractor 40 from damaging and the valve 31 from frosting caused by the long-time low-temperature air suction of the air extractor 40. Meanwhile, when the first storage space 21 needs oxygen reduction, the oxygen reduction efficiency can be improved by alternately reducing the oxygen, so that the equipment utilization rate is improved, and the efficiency is high.
In some embodiments of the present invention, when oxygen reduction is required in both the first storage space 21 and the second storage space 22, the first preset time period is equal to the second preset time period, which is convenient for control. When only the second storage space 22 needs oxygen reduction, the first preset time period can be shorter than the second preset time period, and the energy-saving effect is obvious.
Further, the oxygen reduction time period of the first storage space 21 is accumulated until the first oxygen reduction time period is reached or exceeded, so that the first storage space 21 is completely reduced in oxygen. For example, all the first preset time period is accumulated, and the timing of ending the oxygen reduction of the first storage space 21 is determined. It should be noted that when the last first preset time period is operated, if the first preset time period is not reached, the oxygen reduction ending time of the first storage space 21 is met, the oxygen reduction of the first storage space 21 can be immediately ended, or the oxygen reduction of the first storage space 21 can be ended after the first preset time period is operated. The oxygen reduction period of the second storage space 22 is accumulated until the second oxygen reduction period is reached or exceeded, so that the oxygen reduction of the second storage space 22 is finished.
Similarly, the second preset time period is accumulated to determine the timing of ending the oxygen reduction in the second storage space 22. It should be noted that when the last second preset time period is operated, if the second preset time period is not reached, the oxygen reduction ending time of the second storage space 22 is met, the oxygen reduction of the second storage space 22 may be immediately ended, or the oxygen reduction of the second storage space 22 may be ended after the second preset time period is operated. Can better reduce oxygen, ensure that the oxygen reduction meets the requirements and ensure the quality of the stored food.
In some embodiments of the present invention, when the first storage space 21 finishes oxygen reduction and the second storage space 22 needs oxygen reduction, the valve 31 is controlled to communicate the air extracting device 40 with the first air regulating membrane module for a third preset time period when the second storage space 22 finishes oxygen reduction. When only the second storage space 22 is used for oxygen reduction, the valve 31 is controlled to communicate the gas extraction device 40 with the first air regulating membrane module for a fourth preset time when the second storage space 22 finishes the oxygen reduction. The third preset duration may be equal to the fourth preset duration. When the first storage space 21 finishes the oxygen reduction and the second storage space 22 needs to reduce oxygen, it can be said that only the second storage space 22 needs to reduce oxygen at this time. When only the second storage space 22 needs to be deoxygenated, it can also be said that only the second storage space 22 is deoxygenated. The valve 31 can be prevented from being easily frosted in the low temperature stage.
In some embodiments of the present invention, when the first storage space 21 finishes deoxygenation and the second storage space 22 needs to be deoxygenated, after the first storage space 21 finishes deoxygenation or after the first storage space 21 finishes deoxygenation for a fifth preset time period, the valve 31 is controlled to communicate the air extraction device 40 with the second controlled atmosphere module, and the valve 31 communicates the air extraction device 40 with the second controlled atmosphere module for a sixth preset time period and then switches to communicate the air extraction device 40 with the first controlled atmosphere module, and the valve 31 communicates the air extraction device 40 with the first controlled atmosphere module for a seventh preset time period and then switches to communicate the air extraction device 40 with the second controlled atmosphere module until the second storage space 22 finishes deoxygenation. Further, the sixth preset time period is equal to the second preset time period, and the seventh preset time period is less than or equal to the first preset time period. The fifth preset time period may be the first preset time period minus the operating oxygen reduction time of the first storage space 21, that is, when the last first preset time period is operated, if the first preset time period is not reached, the oxygen reduction ending time of the first storage space 21 is met, and the oxygen reduction of the first storage space 21 is ended after the first preset time period is operated. The seventh preset period of time may be equal to the first preset period of time required when only the second storage space 22 needs to be deoxygenated. The alternate operation can prevent the air extractor 40 from damaging and the valve 31 from frosting caused by the long-time low-temperature air suction of the air extractor 40.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A refrigerator comprises a first storage space and an air extracting device, wherein a pump inlet of the air extracting device is communicated with the first storage space so as to extract part or all of gas in the first storage space; the refrigerator is characterized by also comprising a temperature control type heat conduction device;
the air extraction device comprises a pump head with an outlet and a motor, and the temperature-controlled heat conduction device is configured to transfer heat generated by the motor to the pump head and to interrupt heat transfer after the temperature of the pump head reaches a preset temperature.
2. The refrigerator of claim 1, further comprising a first air regulating membrane assembly, wherein the pump inlet of the air extracting device is communicated with the first air regulating membrane assembly to enable more oxygen in the first storage space to flow out of the first storage space relative to nitrogen in the first storage space through the first air regulating membrane assembly.
3. The refrigerator according to claim 1,
the motor comprises a motor shell, and the motor shell and the pump head are thermally connected with the temperature control type heat conduction device.
4. The refrigerator according to claim 1,
the temperature control type heat conduction device is a bimetallic strip.
5. The refrigerator of claim 3, further comprising an exhaust tube wound around the motor housing and having an inlet in communication with the pump outlet on the pump head.
6. The refrigerator according to claim 5,
the exhaust pipe is made of a heat conducting material, and the temperature control type heat conducting device is in thermal connection with the motor shell through the exhaust pipe.
7. The refrigerator according to claim 6,
the exhaust pipe comprises an inlet pipe section, a winding pipe section and an outlet pipe section, the inlet pipe section and the outlet pipe section are connected to two ends of the winding pipe section, the winding pipe section is wound on the motor shell,
the temperature control type heat conduction device is in thermal connection with the end part of the outlet pipe section, which is connected with the winding pipe section; the exhaust pipe is provided with a metal sheet, and the metal sheet is thermally connected with the temperature control type heat conduction device.
8. The refrigerator according to claim 5,
the air exhaust device is a vacuum pump, and an inlet of the exhaust pipe is communicated with an outlet of the pump through a flexible pipe.
9. The refrigerator of claim 2, further comprising a second storage space, a second gas regulating membrane module, and a valve, the first gas regulating membrane module being in communication with one inlet of the valve, the second gas regulating membrane module being in communication with the other inlet of the valve, the pump inlet of the gas evacuation device being in communication with an outlet of the valve such that oxygen in the second storage space flows out of the second storage space through the second gas regulating membrane module more than nitrogen in the second storage space.
10. The refrigerator of claim 9, wherein a storage temperature in the first storage space is higher than a storage temperature in the second storage space;
the valve is configured to enable the air extracting device to be communicated with the first air regulating membrane assembly for a first preset time period and then to be switched to enable the air extracting device to be communicated with the second air regulating membrane assembly, and enable the air extracting device to be communicated with the first air regulating membrane assembly for a second preset time period and then to be switched to enable the air extracting device to be communicated with the first air regulating membrane assembly, so that oxygen can be reduced for the second storage space alternatively or for the first storage space and the second storage space simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010865172.0A CN114111158B (en) | 2020-08-25 | 2020-08-25 | Refrigerator with a door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010865172.0A CN114111158B (en) | 2020-08-25 | 2020-08-25 | Refrigerator with a door |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114111158A true CN114111158A (en) | 2022-03-01 |
| CN114111158B CN114111158B (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010865172.0A Active CN114111158B (en) | 2020-08-25 | 2020-08-25 | Refrigerator with a door |
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| CN (1) | CN114111158B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009096324A (en) * | 2007-10-17 | 2009-05-07 | Shimadzu Corp | Air-bleeding system |
| EP2604840A1 (en) * | 2011-12-16 | 2013-06-19 | Astrium GmbH | Conveyor device for cryogenic liquids |
| CN104613307A (en) * | 2014-11-17 | 2015-05-13 | 中国科学院力学研究所 | Liquid oxygen supply system for direct-connected supersonic combustion experiment table |
| CN106766515A (en) * | 2016-12-02 | 2017-05-31 | 青岛海尔股份有限公司 | The controlled atmosphere control method of refrigerating equipment and refrigerating equipment |
| WO2018103721A1 (en) * | 2016-12-09 | 2018-06-14 | 青岛海尔股份有限公司 | Refrigeration/freezing device |
-
2020
- 2020-08-25 CN CN202010865172.0A patent/CN114111158B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009096324A (en) * | 2007-10-17 | 2009-05-07 | Shimadzu Corp | Air-bleeding system |
| EP2604840A1 (en) * | 2011-12-16 | 2013-06-19 | Astrium GmbH | Conveyor device for cryogenic liquids |
| CN104613307A (en) * | 2014-11-17 | 2015-05-13 | 中国科学院力学研究所 | Liquid oxygen supply system for direct-connected supersonic combustion experiment table |
| CN106766515A (en) * | 2016-12-02 | 2017-05-31 | 青岛海尔股份有限公司 | The controlled atmosphere control method of refrigerating equipment and refrigerating equipment |
| WO2018103721A1 (en) * | 2016-12-09 | 2018-06-14 | 青岛海尔股份有限公司 | Refrigeration/freezing device |
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| CN114111158B (en) | 2023-04-18 |
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