CN2295971Y

CN2295971Y - Vacuum preserving box for electric refrigerator

Info

Publication number: CN2295971Y
Application number: CN 97213293
Authority: CN
Inventors: 回世昌
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-05-05
Filing date: 1997-05-05
Publication date: 1998-10-28
Anticipated expiration: 2007-05-05

Abstract

The utility model provides a vacuum fresh preservation box which has the advantages of automatic control, convenient opening and closing and repetitive use and is arranged in the refrigerating chamber of a refrigerator to extend the fresh preservation period of food. The junction of a box body and a box door of the utility model is inlaid with a sealing rubber ring, wherein, the box door is provided with a three-way valve for balancing air pressure inside and outside the box when the box door is opened. An isolation chamber is formed in the box body, and a vacuum air exhaust pump driven by a miniature motor is installed in the isolation chamber and is communicated with the interior of the box body by a one-way valve to exhaust air. A corrugated pipe and a push-button switch are used for detecting the vacuum degree in the box and for switching off or switching on a vacuum system. A power supply source is connected in parallel with a switch on the door of the refrigerator and is controlled by the switch. The utility model can also be taken out from the refrigerator to use.

Description

The use in refrigerator vacuum fresh-keeping box

The utility model relates to a sealed vacuum antistaling box is set in refrigerator (cabinet), be used to prolong the depositing of varieties of food items, freshness date, only refrigeration can not vacuum freshness retaining to remedy current refrigerator (cabinet).The deficiency of function singleness.

The depositing of food, preservation method mainly contain two kinds.The one, refrigeration places certain low temperature environment to suppress the quick breeding of mushroom food.As food being placed on the middle preservation of refrigerator (frame) etc.The 2nd, vacuum method is placed on food in the container of sealing, it is pumped into carries out fresh-keeping near vacuum state.As flexible plastic vacuum seal pack etc.To cover disease bigger but two kinds of methods are used respectively.About about 0 ℃ of the indoor temperature of refrigerator cold-storage, the food time that deposit the inside is long slightly then spoiled, rotten.Though the food storage period of Vacuum Package, is longer, once unpacking, has then lost preservativity.

The purpose of this utility model just provides a kind of promptly refrigerate and the refrigerator (cabinet) of the double effect of Vacuum Package is used vacuum fresh-keeping box.A start or stop sealed vacuum fresh-keeping box easy, that control automatically promptly is set in cold storage chamber of refrigerator.The size of this antistaling box designs according to the general layout in the refrigerator.Mainly by casing.Chamber door (lid), micromotor drive the vacuum exhaust pump and sensing and controlling system is formed.Only food need be placed in the antistaling box in the refrigerator purpose that the chucking hermatic door can reach long-period freshness preserving, use repeatedly when the time comes.When this antistaling box need not use.Can pull up attaching plug, stop its system works, also it can be taken out refrigerator and use as the sealing antistaling box separately outward.

This antistaling box is as by global design in the makers' New Product Development Item of refrigerator (cabinet), an ad hoc fresh-keeping chamber, pumped vacuum systems and control system then can be moved on compressor bank on the refrigerator (cabinet) and other parts and link, and make the function of use of refrigerator more improve a step.

The utility model is achieved in that injection machine makes holistic plastic box and chamber door (lid), and the frame portion of casing is fluted, and groove is embedded with sealing rubber ring, so that keep its inside and outside sealing after closing upper chamber door.Also be provided with a little isolation ward on the casing, the miniature vacuum exhaust pump of the micromotor drive of pumped vacuum systems is installed in the isolation ward.Also be equipped with the bellows, the push switch (also the available pressure sensor detects control) that detect control system.Isolation ward and casing have two vias, and one is installed a valve of only being permitted the air one-way flow, and the vacuum exhaust pump is extracted the air in the antistaling box out by this one-way cock.Bellows of another Kong Shangan, the end sealing of bellows, the other end and box sealing crimping, blind end withstands a push switch, as detecting the vacuum condition in the antistaling box, the shutoff or the connection of control motor power.The chamber door of antistaling box has locking card, close upper chamber door then with casing on the deck chucking, also have a three-way valve on the chamber door, effect is when the food that needs to take out in the antistaling box, elder generation revolves it and turn 90 degrees, and makes the inside and outside gas communication of case, air pressure balance, just easily opens chamber door then.With after revolve and return original position.Power switch on total power switch and the refrigerator door also connects, and the chamber door of opening refrigerator then whole system quits work.Micromotor adopts the ac motor of YYS10, and the vacuum exhaust pump adopts small-sized slidingtype air compressor, and the capacity formula of the type compressor is as follows:

V _h＝A×L×h×60(m ³/h)

A＝2[πD ²/8-πd ²/8+de+2e(-t/2)]

Calculate according to above-mentioned formula, the evacuation time of three liters of containers can reach the vacuum of long-period freshness preserving in 20 minutes.

Concrete structure of the present utility model is provided by the following drawings:

Figure one is a schematic appearance of the present utility model.

Figure two is generalized sections of isolation ward in the utility model.

Further specify the details and the working condition of the concrete device that the utility model proposes below in conjunction with accompanying drawing.

This device comprises casing (1), chamber door (2), and fluted on edge four frames of casing (1), groove is embedded with sealing joint strip (4), and locking card (5) and three-way valve (6) are arranged on the chamber door (2).After closing upper chamber door (2), chucking locking card (5), sealing joint strip (4) prevent crack between a door and its frame gas leakage.Three-way valve (6) is when you need take out food in the antistaling box, it revolved to turn 90 degrees at this moment that the case outer air enters in the case by via earlier, and inside and outside air pressure balance, otherwise be difficult to chamber door (2) is opened.With after revolve and return original position.

The upper corner of casing (1) also is provided with a little isolation ward (3), micromotor (7), miniature vacuum exhaust pump (8) are housed in the isolation ward (3), the air inlet of miniature vacuum exhaust pump is by one-way cock (9) and interior the conducting of casing (1), and one-way cock (9) only allows the interior air of casing (1) to discharge and can not air inlet.Adorn the bellows (10) and the push switch (11) of a single-ended sealing on isolation ward (3) and another via of casing (1), be used for detecting the vacuum state in the casing (1), turn-off or connect the power supply of motor (7), control its work.Its installation method is: the blind end of bellows (10) heads on press button (11), and the power line of motor (7) is connected with push switch (11), and push switch (11) is for often opening during antivacuum state.Along with vacuum system work, progressively emptying of air in the casing (1), bellows this moment (10) is compressed by external pressure, the handle of push switch (11) is with contracting thereafter and extend, when the air in the casing be discharged to setting near vacuum state the time, push switch (11) handle stretches out fully, and the push switch (11) of this moment is for turn-offing, and motor (7) quits work.After getting food, the inside and outside air pressure balance of casing (1), bellows (10) reinstatement attitude, push switch (11) is the boil down to normally open again, and motor comes into operation again.Above function is available pressure sensor and controller replacement also.The power supply of isolation ward (3) is by the power switch on socket (12) and refrigerator (cabinet) chamber door and connect, and it is conducting state that the chamber door of refrigerator is shut.Open refrigerator door, the whole system power remove, do not work.

Claims

1. use in refrigerator vacuum fresh-keeping box, be arranged in the refrigerator, also can take out that refrigerator uses, casing has hermatic door outward, three-way valve, pumped vacuum systems and detection control system, it is characterized in that: be embedded with O-ring seal between chamber door and casing, prevent gas leakage, in the time of need opening chamber door, three-way valve is threaded to conduction position, makes the inside and outside gas communication of case, air pressure balance; Pumped vacuum systems is by conducting in one-way cock and the case.

2, use in refrigerator vacuum fresh-keeping box according to claim 1 is characterized in that: the pumped vacuum systems in the isolation ward drives the vacuum exhaust pump by micromotor, by one-way cock with the air emptying in the case.

3, use in refrigerator vacuum fresh-keeping box according to claim 1 is characterized in that: the detection control system in the isolation ward measures the vacuum in the casing by bellows or sensor and control is turn-offed or the running of startup micromotor.