CN102186383A

CN102186383A - Rice cooker

Info

Publication number: CN102186383A
Application number: CN2009801408621A
Authority: CN
Inventors: 吉川秀树; 高桥健三; 根岸和善; 桥元健太郎; 富田真司
Original assignee: Mitsubishi Electric Home Appliance Co Ltd; Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Home Appliance Co Ltd; Mitsubishi Electric Corp
Priority date: 2008-10-15
Filing date: 2009-04-22
Publication date: 2011-09-14
Anticipated expiration: 2029-04-22
Also published as: KR101360463B1; JP5202642B2; HK1157161A1; CN102186383B; TW201016174A; TWI391111B; WO2010044286A1; KR20110065514A; JPWO2010044286A1

Abstract

Disclosed is a rice cooker of improved reliability and safety able to prevent the backflow of cooling water. The rice cooker includes: a steam treating tank (10) which is detachably disposed on the front face of a rice cooker main body (1) and which houses cooling water for condensing the steam that is generated during the operation of the rice cooker; a steam conduit (7) which is arranged in a lid (3) which is pivotably provided on the rice cooker main body and which allows the steam treating tank to communicate with the interior of the rice cooker main body when the lid is closed on the rice cooker main body; a communication pipe (15) which is provided in an upper lid (12) of the steam treating tank and which allows the steam conduit and a plurality of vents (12a) that allow communication of the interior of the tank with the outside air to communicate with the interior of the tank; a through-hole (19) which is provided in one side of the communication pipe in a position above a predetermined level of the cooling water so as to pass through the communication pipe and an upper space of the steam treating tank; and a check valve (20) which is provided in one side of the communication pipe and which closes the through-hole when the pressure within the rice cooker main body is greater than the atmospheric pressure, and opens the through-hole when the pressure within the rice cooker main body is less than the atmospheric pressure.

Description

Electric cooker

Technical field

The present invention relates to carry out the electric cooker of Steam Recovery, particularly relate to the structure that is provided with check-valves in order to prevent the cooling water adverse current.

Background technology

Electric cooker in the past for the water vapour that does not make in the process of cooking to be produced be discharged to the electric cooker main body around, and utilize steam lead water vapour to be imported in the cooling water that is stored in the case (tank), water vapour is diffused in the cooling water, thereby make water vapour be condensed into water (for example, with reference to patent documentation 1.)。

The prior art document

Patent documentation

Patent documentation 1: Japanese kokai publication hei 03-231613 communique (the 2nd page, the 1st figure)

Brief summary of the invention

The problem that invention will solve

As described above in the past with the electric cooker of Steam Recovery in the case in there are the following problems, when promptly in interior pot, becoming negative pressure, the cooling water in the case can adverse current in interior pot.

Summary of the invention

The present invention makes in order to solve problem as described above, and its purpose is, provides a kind of preventing to finish cooling water adverse current in the rear cabinet, improved the electric cooker of reliability and security cooking.

Be used to solve the means of problem

Electric cooker of the present invention comprises: the electric cooker main body; Interior pot, it is removably installed on this electric cooker main body; Heating arrangements, the inside that it is located at this electric cooker main body is used for pot in above-mentioned is heated; Lid, its rotation is located on this electric cooker main body freely; And steam treatment case, it is removable installed on the sidewall of electric cooker main body, storage is used for making cook steam that action produces to be condensed into the cooling water of water, wherein, on above-mentioned lid, be equipped with steam lead, this steam lead makes in the electric cooker main body when lid seals above-mentioned electric cooker main body and is connected with above-mentioned steam treatment case, on above-mentioned steam treatment case, cover to be provided with and be used to passage that extraneous air is connected with case inside, with the communicating pipe that is used to above-mentioned steam lead is connected with case inside, on the side of above-mentioned communicating pipe, be provided with through hole, the side that this through hole is arranged in this communicating pipe is than the predetermined water level of the cooling water position by the top, this through hole connects the upper space of this communicating pipe and above-mentioned steam treatment case, on the side of above-mentioned communicating pipe, be provided with check-valves, the pressure of this check-valves in the electric cooker main body seals this through hole when being higher than atmospheric pressure, open this through hole when the pressure in the electric cooker main body is lower than atmospheric pressure.

The invention effect

In electric cooker of the present invention, the steam treatment case removably is set on the sidewall of electric cooker main body, this steam treatment case is stored cooling water in order to make the steam that produces be condensed into water in the action of cooking of this electric cooker main body and being reclaimed, be equipped with steam lead rotating on the lid be located at above-mentioned electric cooker main body freely, this steam lead makes in the electric cooker main body when lid seals above-mentioned electric cooker main body and is connected with above-mentioned steam treatment case, on above-mentioned steam treatment case, cover to be provided with and be used to passage that extraneous air is connected with case inside, with the communicating pipe that is used to above-mentioned steam lead is connected with case inside, on the side of above-mentioned communicating pipe, be provided with through hole, this through hole is positioned at the position of leaning on the top than the predetermined water level of cooling water, this through hole connects the upper space of this communicating pipe and above-mentioned steam treatment case, on the side of above-mentioned communicating pipe, be provided with check-valves, the pressure of this check-valves in the electric cooker main body seals this through hole when being higher than atmospheric pressure, when being lower than atmospheric pressure, opens the pressure in the electric cooker main body this through hole, therefore, rice to be cooked bulk boiling in the operation of cooking when cooking and the steam that is full of in the electric cooker main body enters communicating pipe via steam lead, diffuse in the cooling water that is stored in the steam treatment case from the front end of communicating pipe and be condensed into water, at this moment, owing to be higher than atmospheric water vapour through in communicating pipe from the pressure in the electric cooker main body, therefore the valve body of check-valves is with the through hole sealing of communicating pipe, enter when cooking rice over a slow fire operation, pressure in the current electric cooker main body is lower than atmospheric pressure, the valve body of check-valves is opened the through hole of communicating pipe under the effect of negative pressure, meanwhile extraneous air enters case inside from the passage of being located at loam cake, this extraneous air passes through hole, enter in the electric cooker main body via communicating pipe and steam lead, make the pressure in the electric cooker main body become identical, can prevent the adverse current of cooling water thus with the extraneous air pressure.

Description of drawings

Fig. 1 is the stereogram of electric cooker of the embodiments of the present invention of the expression state of opening lid.

Fig. 2 is that the stereogram of above-mentioned electric cooker that lid unloads the state of steam treatment case is opened in expression.

Fig. 3 is the stereogram of the above-mentioned electric cooker of the state that is connected with the steam treatment case of expression steam lead and inner cap.

Fig. 4 is the A-A line cutaway view among Fig. 3.

Fig. 5 is the stereogram of decomposing state of the steam treatment case of the above-mentioned electric cooker of expression.

Fig. 6 is the stereogram of the steam treatment case of the above-mentioned electric cooker of expression.

Fig. 7 is the B-B line cutaway view among Fig. 6.

Fig. 8 is the stereogram of the employed check-valves of steam treatment case of the above-mentioned electric cooker of expression.

Fig. 9 is the cutaway view of state on communicating pipe that check-valves is installed to the steam treatment case of the above-mentioned electric cooker of expression.

Figure 10 be the expression above-mentioned electric cooker cook the action in temperature curve and the chart of heating source correlation.

The specific embodiment

Fig. 1 is the stereogram of electric cooker of the embodiments of the present invention of the expression state of opening lid, Fig. 2 is that the stereogram of above-mentioned electric cooker that lid unloads the state of steam treatment case is opened in expression, Fig. 3 is the stereogram of the above-mentioned electric cooker of the state that is connected with the steam treatment case of expression steam lead and inner cap, Fig. 4 is the A-A line cutaway view among Fig. 3, Fig. 5 is the stereogram of decomposing state of the steam treatment case of the above-mentioned electric cooker of expression, Fig. 6 is the stereogram of the steam treatment case of the above-mentioned electric cooker of expression, Fig. 7 is the B-B line cutaway view among Fig. 6, Fig. 8 is the stereogram of the employed check-valves of steam treatment case of the above-mentioned electric cooker of expression, Fig. 9 is the cutaway view of state on communicating pipe that check-valves is installed to the steam treatment case of the above-mentioned electric cooker of expression, Figure 10 be the expression above-mentioned electric cooker cook the action in temperature curve and the chart of heating source correlation, wherein, the temperature curve shown in Figure 10 is represented the variations in temperature by the detected interior pot bottom of bottom temp sensor.

As Fig. 1～shown in Figure 4, the inside of electric cooker main body 1 have dismountable in pot 2.Reference numeral 1a is the case supporting station that is set to be projected into the front surface bottom of electric cooker main body 1.Should utilize the heating arrangements (omitting diagram) of being located at electric cooker main body 1 inside to heat by interior pot 2.

On this electric cooker main body 1, open and close the lid 3 be provided with the top that is used to cover this electric cooker main body 1 freely.In the dismounting of the lower surface of this lid 3 inner cap 4 is installed freely, the cover sensor 5 that is made of thermistor of the temperature of pot 2 internal atmospheres be used to detect in is installed on this inner cap 4.

In addition, also be provided with steam introducing port 6 on inner cap 4, this steam introducing port 6 is connected with a end of steam lead 7 in being equipped on lid 3.Reference numeral 8 is the seal on the other end that is installed in steam lead 7.

In addition, in the dismounting of the front surface side of electric cooker main body 1 steam treatment case 10 is installed freely, this steam treatment case 10 is used to store the cooling water of predetermined water level, and the cooling water of this predetermined water level is used for making the steam that is produced in the action of cooking to be condensed into water.

As shown in Figure 5, steam treatment case 10 is made of following each several part, that is: box main body 11, and it is and the width of electric cooker main body 1 and highly identical size, the width of fore-and-aft direction narrower and laterally-elongated and upper opening, and this box main body 11 is used to store cooling water; Loam cake 12, it is used to embed the upper opening of box main body 11 and seals this opening; Seal 13, the lower surface that it is installed on loam cake 12 is the shape identical with the opening of box main body 11; Steam lead inlet 14, it is located on the sidepiece of loam cake 12; Communicating pipe 15, it is installed on the steam lead inlet 14 integratedly in the mode that hangs down in box main body 11; Trumpet-shaped noise reduction member 16, it is installed in the lower end of communicating pipe 15; Case cover 17, it is installed as the front surface side that covers box main body 11.

In addition, be provided with two passage 12a on loam cake 12, this passage 12a makes in the box main body 11 and is connected with extraneous air.

In addition, be provided with two valve erection openings 18 above the side of communicating pipe 15, the position above leaning on below these valve erection openings 18 and than the water level of cooling water is provided with through hole 19.

And when lid 3 was closed electric cooker main body 1, as shown in Figure 3 and Figure 4, the other end that seal 8 is installed that is equipped on the steam lead 7 in the lid 3 was connected with the steam lead inlet 14 of the loam cake 12 of steam treatment case 10.

As Fig. 7 and shown in Figure 9, on the side of the communicating pipe 15 that is provided with integratedly with loam cake 12, utilize telescope structure that check-valves 20 is installed.

This check-valves 20 is made of the such raw material with flexibility of for example silicon rubber, and as shown in Figure 8, this check-valves 20 is by constituting as the lower part, that is: valve body 21, and it is the quadrilateral thin plate shape; Two valves are installed with mosaic process 22, and its sidepiece ground near valve body 21 is provided with; Annular convex 23, its outstanding valve that is provided with that is arranged on valve body 21 is installed with on the side of mosaic process 22, and greatly surrounding this through hole 19, it is used to improve the sealing with this through hole 19 than the through hole 19 of communicating pipe 15 for it.

In addition, the hole area of the through hole 19 of preferred communicating pipe 15 greater than 1/6 of the bore area of the communicating pipe 15 of hanging down in box main body 11, also can be the size identical with the bore area of communicating pipe 15 when maximum at least.In this embodiment 1, the bore area on the top of communicating pipe 15 is 135mm ², the hole area of the through hole 19 of communicating pipe 15 is 24mm ²

The hole area of the through hole 19 of communicating pipe 15 is greater than 1/6 reason of the bore area of the communicating pipe 15 of hanging down in box main body 11 at least, if the hole area of the through hole 19 of communicating pipe 15 is for example 1/8 size of the bore area of communicating pipe 15, then extraneous air can not enter fully, and might cause the situation of cooling water adverse current, if greater than 1/6 so that with the bore area of communicating pipe 15 be area identical, then extraneous air can enter fully, thereby check-valves 20 is moved reliably.

Above-mentioned check-valves 20 is installed on the side of communicating pipe 15 as follows.

Check-valves 20 is installed on the side of communicating pipe 15 as follows: make two valves of check-valves 20 install with mosaic process 22 chimeric with the anticreep state respectively with two valve erection openings 18 of the top of a side that is located at communicating pipe 15, make the annular convex 23 of check-valves 20 be connected to through hole 19 around a side butt, the above-mentioned valve erection opening 18 of ratio that above-mentioned through hole 19 is arranged at communicating pipe 15 by under the position on, utilize valve body 21 these through holes 19 of sealing.

In check-valves 20, by annular convex 23 is set on valve body 21, and to compare with the situation that only has valve body 21, rigidity is improved and can seals through hole 19 reliably.

In this embodiment 1, the through hole 19 of the 21 sealing communicating pipes 15 of the valve body with annular convex 23 of check-valves 20 before the beginning of cooking.

Afterwards, action begins to cook, as shown in figure 10, by preheating, transfer to the operation of cooking at 55 ℃ preheating procedures through after the certain hour, rising at short notice about 100 ℃ under strong fire action after the operation of cooking begins, this is because the rice to be cooked local boiling of interior pot 2 bottom etc. cause.

Afterwards, utilize weak fire, proceed eddy-current heating with the temperature about 100 ℃, come to life in rice to be cooked integral body, water vapour produces in a large number and become when being full of the state of water vapour in interior pot 2, moisture in the interior pot 2 disappear and cause the temperature of interior pot 2 bottom sharply to rise, when for example reaching 124 ℃ cook and finish temperature, transfer to the operation of cooking rice over a slow fire.

Like this, action begins to cook, enter the operation of cooking through preheating procedure, and proceed eddy-current heating with the temperature about 100 ℃, come to life in rice to be cooked integral body, water vapour produces in a large number and become when being full of the state of water vapour in interior pot 2, in the water vapours of pot in 2 enter communicating pipe 15 from the steam introducing port 6 of inner cap 4 via steam lead 7, and diffuse to from the top of communicating pipe 15 the cooling water W that is stored in the steam treatment case 10 and be condensed into water.

At this moment, from interior pot 2, pressure is higher than atmospheric water vapour through in communicating pipe 15, therefore pushes the valve body 21 of check-valves 20, so that the through hole 19 of its sealing communicating pipe 15.

Afterwards, when becoming when cooking rice over a slow fire operation, pot 2 internal pressures are lower than atmospheric pressure in current, to install with mosaic process 22 be fulcrum to the valve body 21 of check-valves 20 moves in the mode of the through hole 19 of opening communicating pipe 15 with two valves under the effect of negative pressure, meanwhile suck extraneous air from the passage 12a that is located on the loam cake 12, the valve body 21 that makes check-valves 20 under the effect of this extraneous air that is inhaled into is further removable and open through hole 19 reliably, the extraneous air that has passed through through hole 19 is via communicating pipe 15, steam lead 7 in steam introducing port 6 enters the pot 2 in, and the pressure in the pot 2 is identical with external air pressure in making, and can prevent the cooling water adverse current thus.

In addition, on the loam cake 12 of steam treatment case 10, be provided with two passage 12a, even therefore under the situation that the passage 12a at a position is stopped up by rice grain, because remaining another passage 12a is open-minded, therefore also can similarly make check-valves 20 actions with above-mentioned with condition same as described above.

In this embodiment 1, on the loam cake 12 of steam treatment case 10, be provided with two passage 12a, but need one at least, certainly, plural a plurality of passage 12a can be set also.

In addition, the hole area of the through hole 19 by making communicating pipe 15 is greater than 1/6 of the bore area of the top ends of communicating pipe 15, and even identical with the bore area of the top ends of communicating pipe 15, can make check-valves 20 actions reliably, thereby improve the reliability of the action of check-valves 20.

Description of reference numerals

Pot, 3 lids, 4 inner caps, 5 cover sensors, 6 steam introducing ports, 7 steam leads, 10 steam treatment casees, 11 box main bodies, 12 loam cakes, 12a passage, 14 steam leads inlet, 15 communicating pipes, 17 casees covers, 18 valve erection openings, 19 through holes, 20 check-valves, 21 valve bodies, 22 valves are installed with mosaic process, 23 annular convex, W cooling water in the 1 electric cooker main body, 2.

Claims

1. an electric cooker comprises: the electric cooker main body; Interior pot, it is removably installed in this electric cooker main body; Heating arrangements, the inside that it is arranged at above-mentioned electric cooker main body is used for pot in above-mentioned is heated; Lid, it rotates and is arranged at above-mentioned electric cooker main body freely; And, the steam treatment case, it is removable installed in the sidewall of electric cooker main body, stores to be used for making cook steam that action produces to be condensed into the cooling water of water, it is characterized in that,

Be equipped with steam lead on above-mentioned lid, this steam lead makes in the electric cooker main body when closing lid with respect to above-mentioned electric cooker main body and is connected with above-mentioned steam treatment case,

On above-mentioned steam treatment case, cover to be provided with and be used to make the passage that extraneous air is connected with case inside and be used to communicating pipe that above-mentioned steam lead is connected with case inside,

Be provided with through hole on the side of above-mentioned communicating pipe, the side that this through hole is arranged in this communicating pipe is than the predetermined water level of the cooling water position by the top, and this through hole connects the upper space of this communicating pipe and above-mentioned steam treatment case,

Be provided with check-valves on the side of above-mentioned communicating pipe, the pressure of this check-valves in the electric cooker main body seals this through hole when being higher than atmospheric pressure, open this through hole when the pressure in the electric cooker main body is lower than atmospheric pressure.

2. electric cooker according to claim 1 is characterized in that,

Above-mentioned check-valves is installed by laminal valve body and two valves and is constituted with mosaic process, this valve body is formed by the flexibility raw material, these two valves are installed with the sidepiece ground setting of mosaic process near these valve bodies, be used for respectively with a side that is formed on above-mentioned communicating pipe at least two valve erection openings with anticreep state tabling.

3. electric cooker according to claim 2 is characterized in that,

On the above-mentioned valve of being provided with of the valve body of above-mentioned check-valves is installed side with mosaic process, have annular convex, when sealing above-mentioned through hole by this valve body, this annular convex surround this through hole around.