CN202346143U

CN202346143U - Domestic fresh-keeping box

Info

Publication number: CN202346143U
Application number: CN 201120430926
Authority: CN
Inventors: 郑幸
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2011-11-03
Filing date: 2011-11-03
Publication date: 2012-07-25
Anticipated expiration: 2021-11-03

Abstract

The utility model discloses a domestic fresh-keeping box, comprising a fresh-keeping cavity and an air guide pipe which is located outside the fresh-keeping box, wherein the both ends of the air guide pipe are communicated with an air inlet and an air outlet of the fresh-keeping cavity. The domestic fresh-keeping box is characterized in that: a circulating pump is arranged on the air guide pipe; a separation membrane is arranged on the air guide pipe between the circulating pump and the air inlet of the fresh-keeping cavity; and an air interchanger capable of supplying air outside the fresh-keeping cavity into the air guide pipe is arranged on the air guide pipe between the separation membrane and the air outlet of the fresh-keeping cavity. Compared with the prior art, the domestic fresh-keeping box disclosed by the utility model has the advantages of simple entire structure, lower cost and better fresh-keeping effect; the circulating pump and the separation membrane are arranged on the air guide pipe outside the fresh-keeping cavity, so as to adjust a gas concentration to be determined in the fresh-keeping cavity; and furthermore, under the effect of the air interchanger, the concentrations of oxygen and nitrogen in the air guide pipe at the front end of the separation membrane are kept balanced with the concentrations of oxygen and nitrogen in air when a next atmosphere control procedure is carried out, so that the separation membrane is ensured to continuously and normally work.

Description

The household fresh-keeping case

Technical field

The utility model relates to a kind of freshness preserving equipment, particularly relates to a kind of household fresh-keeping case.

Background technology

Along with the continuous quickening of modern society's rhythm of life, the time of foods such as average family purchase vegetables, meat and fruit is fewer and feweri, buys once or twice in a general week, therefore, must carry out fresh-keeping to food.Now food fresh-keeping mode commonly used is refrigerator freeze preservation or cold storing and fresh-keeping in the family, and energy consumption is higher, the vegetable and fruit fresh-keeping effect general, meat need thaw shortcoming such as could use yet existing many refrigerators exist.

In view of the foregoing; People have invented various air-conditioning preservation boxes; Like the patent No. is the Chinese utility model patent disclosed " air-conditioning preservation box " of ZL200420062144.1 (Granted publication number for CN2713824Y); It comprises casing and case lid, and case lid is sealedly attached to casing, and the wall of casing is provided with inflation inlet and bleeding point.The utility model is simple in structure, it is convenient and swift to fill fresh-keeping gas, but can't carry out self-control to gas concentration, and fresh-keeping effect is relatively poor.And for example the patent No. is the Chinese invention patent disclosed " a kind of multifunctional micro controlled atmosphere storage fresh-keeping box " of ZL200910080800.8 (Granted publication number for CN101508372B); It includes controlled atmosphere device, airtight insulation casing, signal controller and computer processing unit; Wherein the controlled atmosphere device comprises gas regulation configurator, gas control transmitter, nitrogen gas generating device, carbon dioxide generating means, gas removal device, air pump etc.; Its principle of work be above-mentioned controlled atmosphere device under signal controller and system controlled by computer, the composition of air of insulation in the casing regulated, the nitrogen in the casing, oxygen and concentration of carbon dioxide are controlled in the desired value of setting; So that storage environment preferably to be provided to fruits and vegetables; Though this air-conditioning preservation box possesses preferably fresh-keeping effect and realized Based Intelligent Control, it adopts comparatively complicated controlled atmosphere device that gas concentration is regulated, and the integral structure of antistaling box is comparatively complicated; Manufacturing cost is also higher, is inappropriate for average family and uses.

The utility model content

The utility model technical matters to be solved is to above-mentioned prior art present situation, and a kind of simple in structure, low household fresh-keeping case that also possesses better fresh-keeping effect simultaneously of cost is provided.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: this household fresh-keeping case; Comprise fresh-keeping chamber and be positioned at outside the fresh-keeping chamber and two ends are communicated with the ventilation flue on fresh-keeping chamber admission port and air extractor duct respectively; It is characterized in that: said ventilation flue is provided with circulation pump; On the ventilation flue between said circulation pump and the fresh-keeping chamber admission port, be provided with separating film, be provided with on the ventilation flue between said separating film and fresh-keeping chamber air extractor duct and can fresh-keeping chamber outer air be added into the air interchanger in the ventilation flue.

Further; Described air interchanger comprise first change-over valve on the ventilation flue who is serially connected between said circulation pump and the separating film and be serially connected in said circulation pump and fresh-keeping chamber air extractor duct between the ventilation flue on second change-over valve; Said first change-over valve is circumscribed with freeing pipe; Said second change-over valve is circumscribed with air inlet pipe; After said first change-over valve and the switching-over of second change-over valve, fresh-keeping chamber outer air can and flow out from described freeing pipe behind the ventilation flue between air inlet pipe and the freeing pipe from said air inlet pipe inflow.Like this; After first change-over valve and the switching-over of second change-over valve; Fresh air outside the fresh-keeping chamber can get into the ventilation flue between air inlet pipe and the freeing pipe smoothly; Make that when carrying out next time the controlled atmosphere program oxygen in the separating film front end ventilation flue and the concentration of nitrogen gas concn and extraneous air maintenance balance are to guarantee separating film ability normal operation.

For keeping balance better between the oxygen that makes the separating film front end and nitrogen gas concn and the extraneous air concentration, described first change-over valve is located at position on the ventilation flue near described separating film.Can guarantee that with this separating film can continue normal operation.

Further preferred, the ventilation flue between said second change-over valve and the fresh-keeping chamber air extractor duct is provided with filtering membrane.Filtering membrane can filter out impurity such as dust, bacterium, germ, peculiar smell, the air that flows into fresh-keeping chamber is more cleaned, thereby further improve fresh-keeping effect.

As the further improvement of such scheme, described filtering membrane is located at position on the ventilation flue near said fresh-keeping chamber air extractor duct.Like this, the air in the fresh-keeping chamber can flow into filtering membrane fast and filter behind air extractor duct, and filter effect is better.

Preferred as above-mentioned arbitrary scheme, described separating film are located at position on the ventilation flue near said fresh-keeping chamber admission port.Like this, the air after separating film separates can flow in the fresh-keeping chamber fast, thereby obtains better fresh-keeping effect.

Compared with prior art; The advantage of the utility model is: this household fresh-keeping case integral structure is simple, cost is lower and possess fresh-keeping effect preferably simultaneously; It is through being provided with circulation pump and separating film on the ventilation flue outside fresh-keeping chamber; Specific gas concentration to getting in the fresh-keeping chamber is regulated, and under the air interchanger effect, when carrying out next time the controlled atmosphere program; Can make oxygen and nitrogen gas concn and airborne concentration maintenance balance in the separating film front end ventilation flue, to guarantee that separating film can continue normal operation.

Description of drawings

Fig. 1 is the structural representation block diagram of the utility model embodiment.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As shown in Figure 1, this household fresh-keeping case comprises the ventilation flue 2 that fresh-keeping chamber 1 is outer with being positioned at fresh-keeping chamber 1, and ventilation flue 2 two ends are connected with fresh-keeping chamber admission port and fresh-keeping chamber air extractor duct respectively, is provided with separating film 3 near the ventilation flue 2 of fresh-keeping chamber admission port one end.Select suitable separating film 3; Can make through the gas concentration behind the separating film 3 and reach controlled atmosphere gas concentration index request; And general industry with or the antistaling box of commercial kitchen area in inside, fresh-keeping chamber concentration sensor is installed all and is guaranteed that gas concentration is in proper range; Obviously adopt the antistaling box structure of separating film 3 more simple with respect to the antistaling box structure that adopts concentration sensor, productive costs is lower, is more suitable in normal domestic use.In the present embodiment, 3 of selected separating films are used to regulate the oxygen that gets in the fresh-keeping chamber 1 and the concentration of nitrogen, and carbon dioxide in air concentration is not regulated.Be used for saying because make for average family; General only need to carry out short-term (7-10 days) to food fresh-keeping, and there is no need increases carbon dioxide in air concentration to regulate nitrogen, oxygen and three groups of indexs of CO2 as industry or commercial application through equipment such as carbon-dioxide generators.And fresh-keeping for family's short-term, temperature need not to reach 0-4 ℃ in refrigerator cold-storage district, generally remains on about 15 ℃ to get final product, to reduce the energy consumption of refrigeration system.In addition; On ventilation flue 2, be provided with filtering membrane 4 near fresh-keeping chamber air extractor duct one end; Because from the 1 air extractor duct effluent air of fresh-keeping chamber, must contain impurity such as dust, bacterium, germ, peculiar smell; And filtering membrane 4 can filter out above-mentioned impurity, the air that flow into fresh-keeping chamber 1 admission port is once more more cleaned, thereby further improve fresh-keeping effect.

On the ventilation flue 2 between separating film 3 and the filtering membrane 4, be provided with circulation pump 5; On the ventilation flue 2 between circulation pump 5 and the separating film 3, be serially connected with first change-over valve 6; First change-over valve 6 is circumscribed with freeing pipe 8; On the ventilation flue 2 between circulation pump 5 and the filtering membrane 4, be serially connected with second change-over valve, 7, the second change-over valves 7 and be circumscribed with air inlet pipe 9.When antistaling box carries out the controlled atmosphere program; Air carries out interior circulation along single direction of arrow in the ventilation flue 2; Promptly behind first change-over valve 6, flow to separating film 3 from circulation pump 5 effluent airs; Separate the back through separating film 3 and flow into fresh-keeping chamber admission port, the air in the fresh-keeping then chamber 1 flows out and after filtering membrane 4 filters, flows to second change-over valve 7 from fresh-keeping chamber air extractor duct, after flow into behind second change-over valve 7 and circulate in accomplishing one in the circulation pump 5.When after the controlled atmosphere end of program ventilation flue 2 being taken a breath; Air flows along direction shown in the double-head arrow; Need to switch first change-over valve 6 and second change-over valve 7 this moment; Fresh-keeping chamber 1 outer fresh air is flowed into from air inlet pipe 9, and earlier after second change-over valve 7, circulation pump 5 and first change-over valve 6 flow out from freeing pipe 8, fresh air has been added in the ventilation flue 2 between first change-over valve 6 and second change-over valve 7 this moment.In the time of need carrying out next time the controlled atmosphere program; Switch first change-over valve 6 and second change-over valve 7 once more; Fresh air in the ventilation flue 2 between first change-over valve 6 and second change-over valve 7 can flow to separating film 3, and in the practical implementation process, the distance between the separating film 3 and first change-over valve 6 is shorter; Can guarantee that like this oxygen and nitrogen gas concn and airborne concentration in the separating film 3 front end ventilation flues 2 balance each other, thereby guarantee separating film 3 sustainable normal operation.

Antistaling box when work, can be regularly (as opening the door at every turn, or certain interval of time) 5 a period of times of ON cycle pump, making gas in the fresh-keeping chamber 1 is that the concentration ratio of oxygen and nitrogen is controlled in the scope of needs, and then makes the fresh-keeping effect of antistaling box more lasting.It is worthy of note; This household fresh-keeping case except under than the condition of low energy consumption, realize to the short-term of foods such as vegetables, meat and fruit fresh-keeping; Can also attach other function, as split the bag fried, dilated food keeps dry, cake is carried out functions such as fresh-keeping.

The above is merely the preferred implementation of the utility model; Should be understood that; For those of ordinary skills,, can make multiple remodeling or improvement to the utility model not breaking away under the principle prerequisite of the utility model; Such as disinfection functions such as additional anionic sterilizations in antistaling box, these all are regarded as within the protection domain of the utility model.

Claims

1. household fresh-keeping case; Comprise fresh-keeping chamber (1) and be positioned at outer and two ends, fresh-keeping chamber (1) and be communicated with the ventilation flue (2) on fresh-keeping chamber (1) admission port and air extractor duct respectively; It is characterized in that: said ventilation flue (2) is provided with circulation pump (5); On the ventilation flue (2) between said circulation pump (5) and the fresh-keeping chamber admission port, be provided with separating film (3), be provided with on the ventilation flue (2) between said separating film (3) and fresh-keeping chamber air extractor duct and can fresh-keeping chamber (1) outer air be added into the air interchanger in the ventilation flue (2).

2. household fresh-keeping case according to claim 1; It is characterized in that: described air interchanger comprise first change-over valve (6) on the ventilation flue (2) who is serially connected between said circulation pump (5) and the separating film (3) and be serially connected in said circulation pump (5) and fresh-keeping chamber air extractor duct between ventilation flue (2) on second change-over valve (7); Said first change-over valve (6) is circumscribed with freeing pipe (8); Said second change-over valve (7) is circumscribed with air inlet pipe (9); After said first change-over valve (6) and second change-over valve (7) switching-over, fresh-keeping chamber (1) outer air can and flow out from described freeing pipe (8) behind the ventilation flue (2) between air inlet pipe (9) and the freeing pipe (8) from said air inlet pipe (9) inflow.

3. household fresh-keeping case according to claim 2 is characterized in that: described first change-over valve (6) is located at position on the ventilation flue (2) near described separating film (3).

4. household fresh-keeping case according to claim 2 is characterized in that: the ventilation flue (2) between said second change-over valve (7) and the fresh-keeping chamber air extractor duct is provided with filtering membrane (4).

5. household fresh-keeping case according to claim 4 is characterized in that: described filtering membrane (4) is located at position on the ventilation flue (2) near said fresh-keeping chamber air extractor duct.

6. according to any one described household fresh-keeping case in the claim 1 to 5, it is characterized in that: described separating film (3) is located at position on the ventilation flue (2) near said fresh-keeping chamber admission port.