CN102743000A

CN102743000A - Fresh-keeping lunchbox

Info

Publication number: CN102743000A
Application number: CN2011101012553A
Authority: CN
Inventors: 蔡培明
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-21
Filing date: 2011-04-21
Publication date: 2012-10-24

Abstract

The invention relates to a Fresh-keeping lunchbox, and is a kind of small tableware with characteristics of freshness and heat preservation and heating. The appearance of the lunchbox likes small portable computers, and is composed of an upper casing and an lower casing, a rice box, a dish box, a box cover, a tableware box, an electrothermal film and an electric control circuit and the like; the lunchbox is placed on the electrothermal film, the electric control circuit is placed at side part of the lunch box side; the material of the lunchbox is stainless, the material of the casing is non-toxic plastic, a space is generated between the lunchbox and the casing for heat preservation; the storage batteries used for power supply facilitate an application in a no power supply zone, and is convenient for crowds; the heating efficiency can reach as high as more than 99%, and no shock hazard is generated; the lunchbox and the cover enables automatic sealing, vacuumization is carried out, the bacteria invasion and reproduction can be inhibited so that fresh keeping can be realized. A logic control and a digital display circuit are used, and intelligent control is provided and the temperature is shown.

Description

Fresh-keeping boxed cassette

Technical field

The present invention is a kind of fresh-keeping, the insulation and can heat portable informal dinner lunch box, belong to the small intelligent field of household appliances.

Technical background

Influenced by working environment, the needs that have carry diet; In addition, consider that it is first-selected carrying diet from the safe diet angle.The early stage lunch box of widely applying is not incubated, and needs the external heat source heating; Though existing have a lunch box of heating voluntarily, is city's electrical heating, both dangerous, receives the supply socket restricted number again, can not colony or away from the supply of civil power, furthermore electric heating element is a resistance wire, heats inhomogeneously, easy generation is burnt a little.

Another some deficiency that carries diet is that the resting period can not be long, otherwise food is perishable.Though have pass through the cooling (being so-called refrigeration), preserve food, receive technical limitations can not process boxed cassette, and can not fundamentally solve the food spoilage problem.

The main contents of invention

To existing technology shortcoming, take into full account and utilize air thermal preservation; But air is the basic reason that causes food spoilage, and temperature is an external cause, reaches the food fresh-keeping purpose so " no air is fresh-keeping " of adopting food to exempt from ingress of air reaches " self-healing sealing " technology; Storage battery power supply or automobile storage battery power supply are provided in use for oneself, drive the Electric radiant Heating Film heating, realize the heating box lunch.

Embodiment

The present invention is the hollow seal bar of realizing through following technical scheme in addition between lunch box and lunch box, in fill air, and port obturages, and fills air in the assurance not leak; Air valve is housed on the cover of the lunch box; Be furnished with hinge and snap close between lunch box and the cover of the lunch box, lid is around hinge opening and closing, and snap close is used to pin lid and lunch box.Snap close divides two kinds, and a kind of is interior kayser, a kind of outer kayser, exhaust and outer gas injection in being respectively applied for.During interior exhaust, the air expansive force strengthens in the sealing strip, makes to contact tightlyer between lunch box and the lid, simultaneously because atmospheric pressure is pressed on lid, makes that sealing load strengthens between lunch box and lid and the sealing strip, so form the self-healing sealing.Snap close this moment pressure-bearing locking pulling force hardly is so with bearing the less interior kayser of pressure, to reduce overall dimensions.Lid bears the power of opening during outer gas injection, and it is bigger that snap close bears pulling force, so should use outer kayser.

For food is exempted from ingress of air, adopt two kinds of methods.The one, outer insufflation is injected anti-oxidant and nontoxic fresh-keeping gas in lunch box, such as CO2, to get rid of the air in the lunch box; The 2nd, interior degassing method extracts the air in the lunch box.Two kinds of methods all need the air one-way flow; The effect of air valve mainly is exactly that the check air flows; Its installation method divides to be inverted and just to put two kinds, is inverted to be used for outer gas injection, guarantees that fresh-keeping gas can inject and can not discharge; But the air in the box is then because injecting gas pressure forces sealing ring moment to be shunk, and sealing moment lost efficacy and discharged; Air valve is just being put and is being used for interior exhaust, guarantee that gas can be drawn out of in the box, and the outer gas of box can not get into.Another effect of air valve is the display box internal gas pressure, and after gas was excluded in the box, the air valve top spherical of just putting was recessed, and its recessed degree is determined by box air pressure.

Shell not only is used for containing, and is used for insulation.Leave certain keeping warmth space between shell and the lunch box, but and shell open-part and sealing is all arranged with the lunch box contact site, prevent that extraneous air and keeping warmth space air from carrying out heat transmission, have anti-sealing or other liquid simultaneously and invade the effect in the housing.

The Electric radiant Heating Film of heating usefulness adopts advanced nonmetallic materials to process, and is furnished with unidirectional heat transfer warming plate, heating lunch box bottom, and uniform heat distribution can not form and burn a little.Suitable thickness (being not more than 30 millimeters), bigger bottom surface makes the food temperature basically identical up and down in the lunch box, integrates the thermal efficiency up to more than 99%, not only energy-conservation but also environmental protection.

Adopt logic control circuit (FPGA), set chow after, heat voluntarily, and control thermostat temperature automatically, realize intelligent, digitlization.

Adopt advanced special lithium battery power supply, charging once is no less than 2 hours continuously service time, and charging times is as many as 1000 times.

Description of drawings

Description of drawings:

Fig. 1 is a profile axonometric drawing of the present invention;

Fig. 2 is the layout drawing of lunch box dish box and cutlery box;

Fig. 3 is that master of the present invention looks cutaway view;

Fig. 4 is that cutaway view is looked on a left side of the present invention;

Fig. 5 is lunch box and cover of the lunch box interface schema;

Fig. 6 is that automatically controlled plate cooperates figure with shell;

Fig. 7 is the air valve cutaway view;

Fig. 8 is air valve inversion figure;

Fig. 9 is that air valve is just being put figure;

Figure 10 is a hinge;

Figure 11 is outer kayser figure;

Figure 12 is interior kayser figure;

Label title among the figure is following:

(1) cover housing; (2) cutlery box; (3) 3. lunch box and cover of the lunch box sealing ring are called for short sealing ring; (4) 4. lunch box and body seal circle are called for short sealing ring; (5) cover of the lunch box; (6) 6. cover of the lunch box and body seal circle are called for short sealing ring; (7) lunch box; (8) dish box; (9) air valve; (10) box shell; (11) electric heating membrane insulated plate; (12) Electric radiant Heating Film; (13) Electric radiant Heating Film lead; (14) automatically controlled plate and body seal circle are called for short sealing ring (14); (15) automatically controlled plate; (16) charge power supply socket; (17) electric-control board; (18) hinge axis; (19) snap close.

Below in conjunction with accompanying drawing the present invention is done to further specify.

Shown in accompanying drawing 1; Fresh-keeping boxed cassette profile is as laptop computer; Cover housing (1) places on the box shell (10) through hinge; Air valve (9) protrudes in cover housing (1), and snap close (19) protrudes in the long side surface of box shell (10), and automatically controlled plate (15) and charge power supply socket (16) place the little side of box shell (10); Accompanying drawing 2 is layout drawings of cutlery box (2), lunch box (7) and dish box (8), and cutlery box (2) places lunch box (7) side, and dish box (8) places lunch box (7) inside, and dish box (8) has two kinds of arrangement forms, and is a kind of shown in the accompanying drawing heavy line, in the middle of placing, is adapted to interior degassing method; A kind of shown in double dot dash line, place the side, be adapted to outer insufflation.

Shown in accompanying drawing 3, cutlery box (2) bottom is automatically controlled space, built-in pcb board and battery; Electric radiant Heating Film (12) is close to lunch box (7) and is placed on the electric heating membrane insulated plate (11), and electric heating membrane insulated plate (11) places on box shell (10) inner bottom surface; Air valve (9) places lid (5) middle part, and can lean on self elasticity when gas injection or exhaust and between the lid, to form the space, and is closed then; Fig. 7 is the air valve profile; The thin hemisphere face display box internal gas pressure on its top, this hemisphere face depression when air pressure is low, depression just can finish exhaust fully; Fig. 8 is air valve inversion figure, is adapted to outer gas injection, and Fig. 9 is that air valve is just being put figure, is adapted to interior exhaust.The inner edge of lunch box (7) upper edge combines with the outer rim of box shell (10) upper edge, built-in sealing ring (4) between the two; Sealing ring is housed 3. between the groove of the upper edge outer rim of lunch box (7) and lid (5), envelope has air in this sealing ring, and its air pressure reduces and increases with external pressure, produces the self-healing sealing effectiveness.Fig. 5 is matching relationship (interface) figure between (1), (3), (4), (5), (7), (10).Be pressed with sealing ring (6) between cover housing (1) and the lid (5), stop external water to be graded between entering (1) and (5).Be connected through mother-son mouth between automatically controlled plate (15) and the box shell (10), stud with sealing ring (14) between the two, figure (6) is (15), (10), and fiting relation figure between (14), automatically controlled plate (15) are equipped with charge power supply socket (16) and automatically controlled slabstone (17).Close the back between cover housing (1) and the box shell (10) through snap close (19) locking, two kinds of locking modes are arranged, a kind of is outer kayser locking, like Figure 11, is adapted to outer insufflation; Another kind is interior kayser locking, like Figure 12, is adapted to interior degassing method.Open snap close (19), open or close around hinge axis between cover housing (1) and the box shell (10), Fig. 4 is its principle schematic.

The present invention is small and exquisite, is easy to carry, and the thermal efficiency is high, without mains-supplied, and good refreshing effect, real is intensive crowd and field work personnel's indispensable good merchantable brand.

Claims

1. fresh-keeping boxed cassette; Comprise lunch box, dish box, lid, air valve, cutlery box, Electric radiant Heating Film, automatically controlled plate, battery, seal and go up the shell lower casing; Lunch box places on the Electric radiant Heating Film, and the dish box places within the lunch box, and automatically controlled plate and battery place the lunch box side; Outsourcing is similar to the shell of laptop computer, divides three kinds of specifications large, medium and small number.It is characterized in that corresponding space is arranged between shell and the lunch box, utilize air thermal preservation, and there is seal the contact position between shell and the lunch box, air and outside air carry out the heat conduction in the prevention space.

2. fresh-keeping boxed cassette according to claim 1 is characterized in that adopting between lunch box and the cover of the lunch box self-healing sealing.Behind lunch box that the food of heat is packed into, along with the reduction of temperature, seal expands voluntarily, and tight lunch box and the cover of the lunch box contact site sealed stops outside air to get into.

3. fresh-keeping boxed cassette according to claim 1, it is fresh-keeping to it is characterized in that not having air, method one is interior degassing method, utilize evacuation to discharge the air in the lunch box after, highlight the self-healing sealing effectiveness.Along with the minimizing of air in the box, pressure increases between cover of the lunch box and the lunch box, and the seal expansive force strengthens, and sealing effectiveness raises, and has both guaranteed no air in the lunch box, stops outside air to get into again, realizes that no air is fresh-keeping.

4. no air according to claim 3 is fresh-keeping, absorbs air in the box through air valve by evacuation, and the existing non-return effect of bleeding of its air valve has airfree demonstration effect again, and little air is to fresh-keeping degree in box, and then the sphere on the air valve is recessed.

5. fresh-keeping boxed cassette according to claim 1 adopts the Electric radiant Heating Film heating, and joins unidirectional heat transfer warming plate, and the thermal efficiency is higher than more than 99%, and lunch box heating surface homogeneous heating, does not have hot focus.

6. fresh-keeping boxed cassette according to claim 1, lunch box thickness is not more than 30 millimeters, and length and width are bigger, are convenient to food and minimizing food thermal resistance in the large tracts of land heating box, are beneficial to the temperature uniformity of food, and are easy to carry.

7. fresh-keeping boxed cassette according to claim 1 adopts logic control and digital display circuit, sets up chow the Based Intelligent Control temperature of heating on request on their own.

8. fresh-keeping boxed cassette according to claim 1 adopts and provides battery or automobile storage battery power supply for oneself, and is not only safe but also be convenient to use away from power supply area and colony.

9. fresh-keeping boxed cassette according to claim 1, electric part all has sealing, prevents moisture content intrusion automatically controlled circuit.

10. according to claim 3, no air preservation method two is outer insufflations.In box, inject fresh-keeping gas through air valve, get rid of air in the box, realize that no air is fresh-keeping.