CN114061195B - Refrigerator and vacuumizing control method thereof - Google Patents
Refrigerator and vacuumizing control method thereof Download PDFInfo
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- CN114061195B CN114061195B CN202010757184.1A CN202010757184A CN114061195B CN 114061195 B CN114061195 B CN 114061195B CN 202010757184 A CN202010757184 A CN 202010757184A CN 114061195 B CN114061195 B CN 114061195B
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- refrigerator
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/123—Fluid connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
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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
- F25D23/00—General constructional features
-
- 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
- F25D23/00—General constructional features
- F25D23/02—Doors; Covers
- F25D23/028—Details
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The application provides a refrigerator, which comprises a refrigerator body, a refrigerator door, a low-pressure storage unit, an air extraction joint, an air extraction device and a pressure relief unit, wherein the top of the refrigerator door is provided with a containing part; the air extraction device comprises a vacuum pump, an exhaust pipe and an air extraction pipeline, wherein the vacuum pump, the exhaust pipe and the air extraction pipeline are arranged in the accommodating part; the pressure relief unit is communicated with the air extraction pipeline and is used for balancing the internal and external air pressure of the air extraction pipeline after the vacuumizing is finished; the air extraction joint is connected with the low-pressure storage unit in a matched mode, and when the vacuum pump works, air in the low-pressure storage unit sequentially passes through the air extraction joint, the air extraction pipeline, the vacuum pump and the exhaust pipe; according to the application, the turnover type air extraction connector is matched with the low-pressure storage unit to be vacuumized, and the pressure relief unit is matched to balance the internal and external air pressure of the air extraction pipeline after vacuumizing is finished, so that the internal and external air pressure of the air extraction pipeline is balanced, a user can conveniently turn over the air extraction connector to separate the air extraction connector from the low-pressure storage unit, and the user experience is improved.
Description
Technical Field
The application belongs to the technical field of household refrigerators, and particularly relates to a refrigerator and a vacuumizing control method thereof.
Background
At present, with the improvement of the quality requirements of consumers on fresh foods, the requirements on refrigerators are also higher and higher, the refrigerators are required to have higher configuration and stronger functions, and especially, the stored fresh foods are expected to have longer storage periods, so that the freshness of the foods is ensured, and the loss of nutrient components is prevented.
In view of this, the present application has been proposed.
Disclosure of Invention
The application provides a refrigerator aiming at the technical problems.
In order to achieve the above purpose, the application adopts the following technical scheme:
a refrigerator, comprising:
a housing defining an insulated low temperature storage compartment;
the box door is rotatably arranged on the box body so as to open or close the low-temperature storage compartment; the top of the box door is provided with a containing part;
the low-pressure storage unit is arranged on one side of the refrigerator door close to the low-temperature storage room, and can be evacuated to form air pressure lower than the atmospheric pressure outside the refrigerator so as to be beneficial to food preservation;
the air extracting device comprises a vacuum pump arranged in the accommodating part, an exhaust pipe connected with the vacuum pump and an air extracting pipeline;
the air extraction joint is communicated with the air extraction pipeline; the air extraction joint can be arranged on the box door in a turnover way so as to be connected with or separated from the low-pressure storage unit;
the pressure release unit is communicated with the extraction pipeline and is used for enabling gas to enter the extraction pipeline;
the air extraction joint is connected with the low-pressure storage unit, the vacuum pump works, and the air in the low-pressure storage unit sequentially passes through the air extraction joint, the air extraction pipeline, the vacuum pump and the exhaust pipe; after the vacuumizing is finished, the pressure relief unit is opened, and gas enters the air extraction pipeline.
Preferably, the low-pressure storage unit is provided with an extraction opening communicated with the inner cavity of the low-pressure storage unit; the air suction device is characterized in that a one-way ventilation unit is arranged in the air suction opening, so that the air suction opening is opened when the air suction device is used for sucking air, and the air suction opening is sealed after the air suction is finished.
Preferably, the air extraction connector is provided with a butt joint port communicated with the air extraction pipeline, and the butt joint port is used for being in butt joint with the air extraction port on the low-pressure storage unit so as to be communicated with the inner cavity of the low-pressure storage unit when vacuumizing;
when vacuumizing, the vacuum pump works, and the gas in the low-pressure storage unit sequentially passes through the extraction opening, the opposite joint, the extraction pipeline, the vacuum pump and the exhaust pipe.
Preferably, the pressure relief unit is mounted in the accommodating portion.
Preferably, the vacuum pump is sleeved with an elastic sleeve which is abutted against the accommodating part.
Preferably, the low pressure storage unit is detachably connected to the door.
Preferably, the exhaust duct communicates with the external atmosphere of the refrigerator to exhaust the air drawn out of the low pressure storage unit to the outside of the refrigerator.
Preferably, the box door is provided with an air extraction key for starting the vacuumizing operation.
Preferably, the low pressure storage unit is provided with a pressure detection unit.
The vacuum-pumping control method of the refrigerator is characterized in that the refrigerator is provided with a control unit; the method for controlling the vacuumizing of the refrigerator comprises the following steps of:
determining that the vacuumizing condition is met;
the control unit controls the air extractor to vacuumize;
and when the vacuumizing is finished, the control unit controls the pressure relief unit to be opened, and gas enters the air extraction pipeline.
Compared with the prior art, the application has the advantages and positive effects that:
the application provides a refrigerator, which comprises a refrigerator body, a refrigerator door, a low-pressure storage unit, an air extraction joint, an air extraction device and a pressure relief unit, wherein the top of the refrigerator door is provided with a containing part; the air extraction device comprises a vacuum pump, an exhaust pipe and an air extraction pipeline, wherein the vacuum pump, the exhaust pipe and the air extraction pipeline are arranged in the accommodating part; the pressure relief unit is communicated with the air extraction pipeline and is used for balancing the internal and external air pressure of the air extraction pipeline after the vacuumizing is finished; the air extraction joint is connected with the low-pressure storage unit in a matched mode, and when the vacuum pump works, air in the low-pressure storage unit sequentially passes through the air extraction joint, the air extraction pipeline, the vacuum pump and the exhaust pipe; according to the application, the turnover type air extraction connector is matched with the low-pressure storage unit to be vacuumized, and the pressure relief unit is matched to balance the internal and external air pressure of the air extraction pipeline after vacuumizing is finished, so that the internal and external air pressure of the air extraction pipeline is balanced, a user can conveniently turn over the air extraction connector to separate the air extraction connector from the low-pressure storage unit, and the user experience is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of a refrigerator according to the present application;
FIG. 2 is a schematic view showing a part of the structure of a refrigerator in which an air suction connector is separated from a low pressure storage unit according to the present application;
FIG. 3 is a schematic view showing a part of the structure of the connection state of the air extraction connector and the low-pressure storage unit of the refrigerator according to the present application;
fig. 4 is a partial structural schematic view of a low pressure storage unit of the refrigerator of the present application;
fig. 5 is another structural schematic view of a low pressure storage unit of the refrigerator of the present application;
FIG. 6 is a schematic view of the structure of the air extraction joint of the refrigerator of the present application;
FIG. 7 is another schematic view of the air extraction joint of the refrigerator of the present application;
FIG. 8 is a schematic view of a portion of an air extraction joint of a refrigerator according to the present application
FIG. 9 is a schematic view showing a top area of a door of a refrigerator according to the present application;
fig. 10 is a partial structural schematic view of a refrigerator according to the present application;
FIG. 11 is an enlarged view of area A of FIG. 10;
FIG. 12 is a schematic view of the structure of the air extractor and pressure relief unit of the refrigerator of the present application;
fig. 13 is a timing diagram illustrating a method of controlling vacuum pumping of a refrigerator according to the present application.
In the above figures: a refrigerator 1; a case 2; a low pressure storage unit 3; an extraction opening 3a; a vacuum pump 4; an elastic sleeve 5; an air extraction joint 6; an opposite interface 6a; a pressure relief unit 7; an air extraction key 8; a refrigerating chamber 9; a door 10; a housing portion 10a; an intake pipe 11; an exhaust pipe 12; a first pipe 13; a pressure detection unit 14; a unidirectional aeration unit 15.
Detailed Description
The present application will be further described with reference to specific examples so that those skilled in the art may better understand the present application and practice it, but the scope of the present application is not limited to the scope described in the specific embodiments. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be arbitrarily combined with each other.
It should be noted that the description of "first", "second", etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implying an indication of the number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.
In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
Referring to fig. 1-12, a refrigerator 1 includes an insulated cabinet 2, the cabinet 2 defining a plurality of insulated low temperature storage compartments for storing food and other items. In the present embodiment, these low-temperature storage compartments are a refrigerating compartment 9 located at the upper portion and a freezing compartment located at the bottom portion, respectively. The low temperature storage compartments may be closed by respective corresponding door. In the present application, the refrigerating chamber 9 is provided with a side-by-side type door 10, and the freezing chamber is also provided with a side-by-side type door. The refrigerator 1 has an evaporative refrigeration system forming a closed loop. Since such a refrigeration system is a well-known technology in the art, a further description thereof will be omitted.
As shown in fig. 2 to 3, the refrigerator 1 has a low pressure storage unit 3 which can be maintained in a low pressure state, a pumping device for pumping gas from the low pressure storage unit 3, and a pumping joint 6 for connecting with the low pressure storage unit 3. In the present embodiment, the low pressure storage unit 3 is detachably provided on the door 10; the air extractor is arranged at the top of the box door 10 where the low-pressure storage unit 3 is arranged. The air extraction connector 6 is arranged on one side of the box door 10, which is close to the low-pressure storage unit 3, in a reversible manner, and the air extraction connector 6 is connected with or separated from the low-pressure storage unit 3 by turning the air extraction connector 6.
When the low-pressure storage unit 3 is connected with the air extraction joint 6 and the air extraction device is started, the air in the low-pressure storage unit 3 is extracted, and the low-pressure storage unit 3 is in a low-pressure state. According to a preferred embodiment of the application, at the end of the evacuation procedure, the pressure in the low-pressure reservoir unit 3 is between a normal atmospheric pressure and absolute vacuum. Since the air pressure in the low-pressure storage unit 3 is lower than the normal atmospheric pressure, those skilled in the art are also commonly referred to as "vacuum storage" thereof, and such a state that the air pressure is lower than the normal atmospheric pressure is referred to as "vacuum state".
Specifically, as shown in fig. 4 to 5, the low pressure storage unit 3 is provided with an air extraction opening 3a, and a unidirectional ventilation unit 15 is provided in the air extraction opening 3a to open the air extraction opening 3a when the air extraction device extracts air, and to seal the air extraction opening 3a after the air extraction is completed. Specifically, the unidirectional ventilation unit 15 may include a rubber column installed in the air extraction opening 3a, and when the pressure in the low-pressure storage unit 3 is greater than the pressure on the side of the rubber column close to the air extraction connector, the rubber column moves to the side close to the air extraction connector 6, and the air extraction opening 3a is opened; when the pressure in the low-pressure storage unit 3 is smaller than the pressure of the rubber column at the side close to the air extraction joint, the rubber column moves to the side close to the inner cavity of the low-pressure storage unit 3, and the air extraction opening 3a is sealed.
As shown in fig. 6-8, the air extraction joint 6 is provided with an interface 6a, and the interface 6a is communicated with the air extraction device and is used for interfacing with the air extraction port 3a on the low-pressure storage unit 3 so as to be communicated with the inner cavity of the low-pressure storage unit 3 when vacuumizing.
Referring to fig. 2, as shown in fig. 9, a housing portion 10a for housing the vacuum pump 4 is provided at the top of the cabinet door 10. The air extractor comprises a vacuum pump 4 and an elastic sleeve 5 sleeved outside the vacuum pump 4; wherein the elastic sleeve 5 is abutted with the accommodating part 10a at the top of the box door 10 to reduce vibration and noise. As shown in fig. 10 to 12, the vacuum pump 4 is provided with an air inlet pipe 11 and an air outlet pipe 12; the air inlet pipe 11 is connected with a first pipeline 13 which is used for communicating with the low-pressure storage unit 3, and the first pipeline 13 extends to the air extraction joint 6 from top to bottom along the box door 10 and is communicated with a butt joint 6a on the air extraction joint 6. The pressure relief unit 7 is arranged at the joint of the air inlet pipe 11 and the first pipeline 13, the pressure relief unit 7 is arranged in the accommodating part 10a and is simultaneously communicated with the air inlet pipe 11 and the first pipeline 13, so that external air enters the air exhaust pipeline (the first pipeline 13 and the air inlet pipe 11) of the air exhaust device after vacuumizing is finished, the internal and external air pressures of the air exhaust pipeline (the first pipeline 13 and the air inlet pipe 11) of the air exhaust device are balanced, the internal and external pressure difference of the air exhaust joint 6 is reduced, and a user can conveniently overturn the air exhaust joint 6 to separate the air exhaust joint from the low-pressure storage unit 3.
The refrigerator 1 is provided with a control unit, the control unit is used for controlling the air extractor to vacuumize the low-pressure storage unit 3 and also used for controlling the pressure relief unit 7 to balance the internal and external air pressure of the air extraction pipeline after the vacuumizing is finished; thereby realizing automatic control of the vacuum pumping of the low-pressure storage unit 3.
In this embodiment, the air extraction opening 3a is disposed at the top of the low-pressure storage unit 3, the air extraction connector 6 is disposed above the low-pressure storage unit 3, and when the air extraction connector 6 is in butt joint with the low-pressure storage unit 3, the butt joint opening 6a on the air extraction connector 6 corresponds to the air extraction opening 3a.
The vacuum pump 4 works, negative pressure is generated on one side of the unidirectional ventilation unit 15 close to the air suction joint 6, the air suction opening 3a of the low-pressure storage unit 3 is opened, the inner cavity of the low-pressure storage unit 3 is communicated with the first pipeline 13, namely, the inner cavity of the low-pressure storage unit 3 is communicated with the vacuum pump 4, and the air in the low-pressure storage unit 3 sequentially passes through the air suction opening 3a, the butt joint 6a, the first pipeline 13, the air inlet pipe 11, the vacuum pump 4 and the air exhaust pipe 12. In this embodiment, the exhaust duct 12 may be provided to communicate with the external atmosphere of the refrigerator to exhaust the air drawn out of the low pressure storage unit 3 to the outside of the refrigerator 1.
When the vacuum pump 4 stops working, the pressure of the one-way ventilation unit 15 at the side close to the air suction joint 6 is larger than the pressure of the one-way ventilation unit at the side close to the inner cavity of the low-pressure storage unit 3, the air suction port 3a of the low-pressure storage unit 3 is closed, and the low-pressure storage unit 3 is in a low-pressure sealing state. At this time, since the air extraction connector 6 is still in sealing connection with the air extraction opening 3a, the pressure in the first pipeline 13 is smaller than the external atmospheric pressure, and if the air extraction connector 6 is directly turned over to separate from the low-pressure storage unit 3, a user needs to apply a larger force; the pressure relief unit 7 communicated with the first pipeline 13 is arranged in the application, after vacuumizing is finished, the pressure relief unit 7 is opened, gas enters the first pipeline 13, so that the pressure inside and outside the first pipeline 13 is balanced, and a user can conveniently turn over the air extraction joint 6 to separate the air extraction joint from the low-pressure storage unit 3.
In this embodiment, as shown in fig. 10, the box door 10 is provided with an air extraction key 8, and the user opens the vacuumizing operation through the air extraction key 8. Specifically, a vacuumizing time threshold value can be set, and vacuumizing is finished when vacuumizing reaches a preset vacuumizing time threshold value. Then, the pressure relief unit 7 is opened to allow the gas to enter the pumping pipeline (the first pipeline 13 and the gas inlet pipe 11) of the pumping device, so as to balance the internal and external pressures of the pipeline, and the user can conveniently turn over the pumping joint 6 to separate the pumping joint from the low-pressure storage unit 3.
It should be understood that the vacuum-pumping on and off mode is not limited to the above description; a pressure detection unit 14 may also be provided on the low pressure storage unit 3, as shown in fig. 11-12, to monitor the pressure in the low pressure storage unit 3 in real time; and the vacuumizing operation is started through the pressure signal.
In this embodiment, a display unit is provided on a side of the door 10 (or other display terminal such as a mobile phone) away from the storage compartment to display the vacuum condition in the low-pressure storage unit 3; in this embodiment, the target vacuum degree of the low-pressure storage unit 3 is set to-20 Kpa, the pumping button 8 or the pressure signal starts the pumping operation, the pumping condition is displayed on the display unit in real time, and the vacuum degree is displayed to stop from 0Kpa to-10 Kpa to-20 Kpa. In addition, a plurality of target vacuum degree gears are set; for example, two target vacuum levels-20 Kpa, -10pa are set. The user can preset the required target vacuum level gear (preset-10 Kpa for storing fruits and vegetables and-20 Kpa for storing meat and dried goods), and then the control logic is the same as that when the vacuumizing operation is performed. The vacuum degree in the low-pressure storage unit is visualized to a user through the arrangement, and the user can conduct specific target vacuum degree arrangement according to the type of the stored objects in the low-pressure storage unit, so that the user can conduct differential vacuumizing.
The air suction connector 6 is matched with the low-pressure storage unit 3 to complete the vacuumizing operation when vacuumizing, and can be separated from the low-pressure storage unit 3 after vacuumizing is finished. However, after the evacuation is finished, as the sealing performance of the air extraction pipeline of the whole air extraction device is good, the inside of the air extraction pipeline is in a negative pressure state, when the user manually overturns the air extraction connector 6 to reset, the user needs to apply a larger force to overcome the force of the atmospheric pressure on the air extraction connector 6 so as to separate the air extraction connector 6 from the low-pressure storage unit 3. In the application, the pressure relief unit 7 is arranged to enable external air to enter the air extraction pipeline after vacuumizing is finished, so that the internal and external air pressure of the pipeline is balanced, and a user can conveniently turn over the air extraction joint 6 to separate the air extraction joint from the low-pressure storage unit 3.
In summary, the air extraction key 8 or the pressure detection unit 14 can be used as a trigger unit for controlling the vacuum extraction of the refrigerator; the refrigerator can also be provided with a timing unit, and the timing unit or the pressure detection unit 14 can be used as a monitoring unit for monitoring the vacuumizing process during the vacuumizing control of the refrigerator; the monitoring unit monitors whether the condition of stopping vacuumizing is reached, and when the condition reaches the preset condition, the vacuumizing is stopped, and the monitoring unit feeds back a vacuumizing ending signal to the control unit. Specifically, when the monitoring unit is designed as a timing unit, the vacuum pump 4 can be set to stop working when the working time of the vacuum pump 4 reaches a preset vacuumizing time threshold value, and a vacuumizing signal is fed back to the control unit by the timing unit. The monitoring unit is set as a pressure detecting unit 14, and when the pressure detecting unit 14 detects that the air pressure in the low-pressure storage unit 3 reaches a preset end air pressure threshold value, the vacuum pump 4 stops working, and a vacuum pumping signal is fed back to the control unit by the pressure detecting unit 14.
It should be noted that, the pressure detecting unit 14 may be configured to always monitor the air pressure in the low-pressure storage unit 3, so as to use the pressure signal as a trigger condition for starting or ending the vacuumizing; in addition, the pressure detecting unit 14 may be configured to be capable of detecting the air pressure of the low-pressure storage unit 3 only during the evacuation process, as in fig. 11, the pressure detecting unit 14 is in communication with the air extraction line of the air extraction device, and after the evacuation is completed, the pressure detecting unit is disconnected from the low-pressure storage unit 3, so that the air pressure in the low-pressure storage unit 3 cannot be effectively detected, and therefore, in this configuration, only the pressure signal is used as a trigger condition for ending the evacuation, and is not suitable as a trigger condition for opening the evacuation. In the concrete design, the control logic is limited according to the actual setting.
A specific method for controlling the vacuum pumping of a refrigerator, as shown in fig. 13, includes the following steps:
s1: determining that the vacuumizing condition is met;
specifically, the air extraction connector 6 is in butt joint with the low-pressure storage unit 3, and the user triggers the vacuumizing operation through the air extraction key 8. The air suction connector 6 may be configured to be in butt joint with the low-pressure storage unit 3, and the pressure detection unit 14 may detect that the air pressure in the low-pressure storage unit 3 reaches a preset opening air pressure threshold.
S2: the control unit controls the vacuum pump 4 to vacuumize, and the monitoring unit monitors the vacuumized state;
specifically, the monitoring unit monitors whether the condition of stopping vacuumizing is reached, and when the condition reaches a preset condition, the vacuumizing is stopped, and the monitoring unit feeds back a vacuumizing ending signal to the control unit.
S3: and when the vacuumizing is finished, the control unit controls the pressure relief unit 7 to be opened, and gas enters the air extraction pipeline to balance the internal and external air pressure of the air extraction pipeline.
The control method of the refrigerator vacuumizing can be used for decompressing the air suction pipeline of the air suction device at the first time when the vacuumizing is finished, so that a user can conveniently overturn the air suction connector 6 to separate the air suction connector from the low-pressure storage unit 3.
The present application is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present application without departing from the technical content of the present application still belong to the protection scope of the technical solution of the present application.
Claims (8)
1. A refrigerator, characterized in that it comprises:
a housing defining an insulated low temperature storage compartment;
the box door is rotatably arranged on the box body so as to open or close the low-temperature storage compartment; the top of the box door is provided with a containing part;
the low-pressure storage unit is arranged on one side of the refrigerator door close to the low-temperature storage room, and can be evacuated to form air pressure lower than the atmospheric pressure outside the refrigerator so as to be beneficial to food preservation;
the air extracting device comprises a vacuum pump arranged in the accommodating part, an exhaust pipe connected with the vacuum pump and an air extracting pipeline; the exhaust pipe is communicated with the external atmospheric environment of the refrigerator so as to exhaust the air pumped out of the low-pressure storage unit to the outside of the refrigerator; the air exhaust pipeline comprises an air inlet pipe which is arranged in parallel with the air exhaust pipe and connected with the vacuum pump, and a first pipeline which is connected with the air inlet pipe; the air inlet pipe and the air outlet pipe are positioned at the same end of the vacuum pump, and the air inlet pipe is positioned at one side of the air outlet pipe away from the bottom wall of the accommodating part;
the air extraction joint is communicated with the first pipeline; the air extraction joint can be arranged on the box door in a turnover way so as to be connected with or separated from the low-pressure storage unit;
a pressure relief unit mounted in the housing portion; the pressure relief unit is communicated with the extraction pipeline through a three-way joint and is used for enabling gas to enter the extraction pipeline; the three-way joint comprises a first end, a second end and a third end; the first end of the three-way joint is connected with the air inlet pipe, the second end of the three-way joint is connected with the first pipeline, and the third end of the three-way joint is positioned on one side, close to the bottom wall of the accommodating part, of the central line of the air inlet pipe and is connected with the pressure relief unit; the pressure relief unit is positioned at one side of the air inlet pipe, which is close to the bottom wall of the accommodating part;
the air extraction joint is connected with the low-pressure storage unit, the vacuum pump works, and the air in the low-pressure storage unit sequentially passes through the air extraction joint, the air extraction pipeline, the vacuum pump and the exhaust pipe; after the vacuumizing is finished, the pressure relief unit is opened, and gas enters the air extraction pipeline.
2. The refrigerator of claim 1, wherein: the low-pressure storage unit is provided with an extraction opening communicated with the inner cavity of the low-pressure storage unit; the air suction device is characterized in that a one-way ventilation unit is arranged in the air suction opening, so that the air suction opening is opened when the air suction device is used for sucking air, and the air suction opening is sealed after the air suction is finished.
3. The refrigerator of claim 2, wherein: the air suction connector is provided with a butt joint communicated with the air suction pipeline, and the butt joint is used for being in butt joint with the air suction port on the low-pressure storage unit so as to be communicated with the inner cavity of the low-pressure storage unit when vacuumizing;
when vacuumizing, the vacuum pump works, and the gas in the low-pressure storage unit sequentially passes through the extraction opening, the opposite joint, the extraction pipeline, the vacuum pump and the exhaust pipe.
4. The refrigerator according to any one of claims 1 to 3, wherein: the vacuum pump is sleeved with an elastic sleeve which is abutted to the accommodating part.
5. The refrigerator according to any one of claims 1 to 3, wherein: the low-pressure storage unit is detachably connected to the box door.
6. The refrigerator according to any one of claims 1 to 3, wherein: and the box door is provided with an air extraction button for starting vacuumizing operation.
7. The refrigerator according to any one of claims 1 to 3, wherein: and the low-pressure storage unit is provided with a pressure detection unit.
8. The method for controlling vacuum pumping of a refrigerator as claimed in claim 1, wherein: the refrigerator is provided with a control unit; the method for controlling the vacuumizing of the refrigerator comprises the following steps of:
determining that the vacuumizing condition is met;
the control unit controls the air extractor to vacuumize;
and when the vacuumizing is finished, the control unit controls the pressure relief unit to be opened, and gas enters the air extraction pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010757184.1A CN114061195B (en) | 2020-07-31 | 2020-07-31 | Refrigerator and vacuumizing control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2287390Y (en) * | 1997-03-14 | 1998-08-12 | 郑华 | Vacuum fresh keeping storaging box |
| KR20060041509A (en) * | 2004-11-09 | 2006-05-12 | 엘지전자 주식회사 | Apparatus for keeping food long term in refrigerator |
| CN201377952Y (en) * | 2009-04-16 | 2010-01-06 | 星星集团有限公司 | Vacuum freshness-preserving refrigerator |
| CN103743186A (en) * | 2013-12-31 | 2014-04-23 | 宏秀电气有限公司 | Vacuum refrigerator and working method thereof |
| CN111380278A (en) * | 2018-12-29 | 2020-07-07 | 海信（山东）冰箱有限公司 | A kind of refrigerator |
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2020
- 2020-07-31 CN CN202010757184.1A patent/CN114061195B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2287390Y (en) * | 1997-03-14 | 1998-08-12 | 郑华 | Vacuum fresh keeping storaging box |
| KR20060041509A (en) * | 2004-11-09 | 2006-05-12 | 엘지전자 주식회사 | Apparatus for keeping food long term in refrigerator |
| CN201377952Y (en) * | 2009-04-16 | 2010-01-06 | 星星集团有限公司 | Vacuum freshness-preserving refrigerator |
| CN103743186A (en) * | 2013-12-31 | 2014-04-23 | 宏秀电气有限公司 | Vacuum refrigerator and working method thereof |
| CN111380278A (en) * | 2018-12-29 | 2020-07-07 | 海信（山东）冰箱有限公司 | A kind of refrigerator |
| CN111380279A (en) * | 2018-12-29 | 2020-07-07 | 海信（山东）冰箱有限公司 | A kind of refrigerator |
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| CN114061195A (en) | 2022-02-18 |
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Address after: 266736 No. 8 Haixin Avenue, Nancun Town, Pingdu City, Qingdao City, Shandong Province Applicant after: Hisense refrigerator Co.,Ltd. Address before: 266736 No. 8 Haixin Avenue, Nancun Town, Pingdu City, Qingdao City, Shandong Province Applicant before: HISENSE (SHANDONG) REFRIGERATOR Co.,Ltd. |
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