CN100469283C

CN100469283C - Rice cooker

Info

Publication number: CN100469283C
Application number: CNB2006101154360A
Authority: CN
Inventors: 佐伯昭彦; 铃木利明; 菊池雄
Original assignee: Hitachi Appliances Inc
Current assignee: Hitachi Global Life Solutions Inc
Priority date: 2005-08-10
Filing date: 2006-08-09
Publication date: 2009-03-18
Anticipated expiration: 2026-08-09
Also published as: JP2007044223A; CN1911144A; JP4340643B2

Abstract

The invention relates to a rice cooker which allows a pressure opening means to continuously control the operation of a pressure regulating means, even if a lid is deformed by a pressure when the pressure regulating means is effective, making the locking mechanism unmovable. The rice cooler is provided with: an inner pot detachably stored in a body; a lid tightly closing the inner lid; a steam passage provided in the lid; the pressure regulating means provided in the steam passage; an opening means opening the steam passage to release it from the pressure regulating operation of the pressure regulating means; and a hook locking the lid to the body. The rice cooler is characterised in that except the opening means, it also provided with a lid locking means engaged with the hook to prevent the opening of the lid, when the opening means allows the pressure regulating means to regulate the pressure, the opening means interlocks with the lid locking means to engage the lid locking means with the hook and, when the opening means is operated to release the pressure regulating means, the opening means non-interlocks with the lid locking means to open the pressure regulating means.

Description

Cooker

Technical field

The present invention relates to cooker.

Background technology

In the past,, propose to have many cookers of internal pot internal pressurization in the process of cooking in order to burn delicious meal.And, in such cooker,, and in the process of its internal pressure being brought up to more than 1 atmospheric pressure of cooking (in the pressure process),, be provided with the mechanism of locking cover for avoiding opening lid because of maloperation with pot in the inner cap sealing.(for example, with reference to patent documentation 1-TOHKEMY 2001-137110 communique)

Cooker shown in the patent documentation 1 for pot pressure inside in regulating, is placed the pressure regulation ball on the valve opening of the middle part of the steam channel that is arranged at lid, the pressure regulation ball is moved, to open and close this valve opening and to regulate pressure with the action of device for opening.And, the locking plate that closes with the lid dogging is set on this device for opening, make it to automatically terminate the locking of lid with the action interlock of this device for opening.

Cooker shown in the above-mentioned patent documentation 1 be make make with device for opening be locking plate that workpiece forms one enter hook below drive the locking of capable hook into.And, when workpiece retreats, then make locking plate break away from hook and unlock.

In the cooker shown in this patent documentation 1, when a pot pressure inside increases in the process of cooking, the problem that exists is, because of the lid intermediate member of its pressure cover with inner cap inside is out of shape, the device for opening action locking plate that is installed on these parts bitten, even can not unlock by hook.

At this moment, because locking plate and workpiece form as one, thereby can't carry out the pressure regulation action, also can take place too to increase the problem that diminishes security because of internal pressure.

Also have, because locking plate and moving-member form as one, therefore, be necessary to make for carrying out the required displacement of the pressure regulation action displacement required consistent with being locking cover, like this, there is the free degree that has limited design, and is difficult to make the problem of the inner compact conformation of lid.

Summary of the invention

The present invention is exactly at least one problem in will addressing these problems.

In order to solve these prior art problems, the cooker of first scheme of the present invention has: load and unload the interior pot of folding and unfolding freely on main body; The lid of pot in sealing and the sealing; Be arranged at the steam channel that covers; Be arranged at the regulator on the steam channel; Be used to open steam channel, the device for opening of being opened by the pressure regulation of regulator action; And lid is fastened on hook on the main body, it is characterized in that, except device for opening, also be provided with the lid lock apparatus that closes with dogging and lid is opened in addition, when device for opening made regulator carry out the pressure regulation action, device for opening moved lid lock apparatus, and lid lock apparatus and dogging are closed, when the device for opening action was opened regulator, device for opening did not move and opens regulator in linkage with lid lock apparatus.

In addition, the cooker of alternative plan of the present invention is on the basis of first scheme, it is characterized in that, lid lock apparatus constitutes the back-moving spring of its engagement release by the cover lock body that closes with dogging with to its cover lock body reinforcing.

Have again, the cooker of third party's case of the present invention be first or the basis of alternative plan on, it is characterized in that the cover lock body has the lock section of lock hook and the mobile protuberance by the action of device for opening on different positions.

According to the structure of first scheme of the present invention, the cover lock body other parts different with device for opening constitute, and therefore, are out of shape the situation that the cover lock body is nipped even lid takes place because of pressure, and device for opening is not moved by it also can with influencing, and can regulate pressure.Therefore, the situation of security can not take place to diminish because of the hypertonia in the interior pot.

In addition,,, distortion is disappeared,, therefore, ease of use is worsened owing to unlock by back-moving spring in case pressure reduces even when pressure is high, nipped according to the structure of alternative plan.

Have again, structure according to third party's case, the position at the lock section by the adjustable cap lock body and the center that relatively rotates of protuberance and the shape of protuberance, because the displacement of the lock section in the time of can regulating device for opening pushing protuberance, therefore, when compact structure can being made by cover lock mechanism, owing to device for opening and cover lock body can be made the structure of the influence that is not subjected to mutual displacement, therefore, can increase the free degree of design.

Description of drawings

Fig. 1 is the simple cutaway view of duty of the regulator of expression cooker of the present invention.

Fig. 2 is the simple cutaway view of duty of the device for opening of the same cooker of expression.

Fig. 3 is the stereogram of pith of the cover of same cooker.

Fig. 4 is the action specification figure of cover lock part, and Fig. 4 (a) is the vertical view of the state decided of cover lock, and lid (b) is a side view.

Fig. 5 is the action specification figure of same cover lock part, and Fig. 5 (a) is a vertical view of having removed the lock-out state of lid, and Fig. 5 (b) is a side view.

Symbol description

1-main body, 2-interior pot, 3-heater, 4-lid, 5-steam channel,

6-regulator, 7-device for opening, 9-control part, 12-hook, 17-cover lock body,

17a-lock section, 17b-protuberance, 18-back-moving spring, 25-lid lock apparatus

The specific embodiment

Below, explain one embodiment of the present of invention in conjunction with the accompanying drawings.Fig. 1 is the simple cutaway view of operating state of the regulator of expression cooker of the present invention, Fig. 2 is the simple cutaway view of operating state of the device for opening of the same cooker of expression, Fig. 3 is the stereogram of pith of the cover of same cooker, Fig. 4 (a), Fig. 4 (b) are the action specification figure of cover lock part, Fig. 4 (a) is the vertical view of the state decided of cover lock, and Fig. 4 (b) is side view.Fig. 5 (a), Fig. 5 (b) are the action specification figure of same cover lock part, and Fig. 5 (a) is a vertical view of having removed the lock-out state of lid, and Fig. 5 (b) is a side view.

Number in the figure 1 is a main body, the 2nd, interior pot, the 3rd, and heater, the 4th, lid, the 5th, steam channel, the 6th, regulator, 6a are that hole, 6b are steel balls, the 7th, device for opening, the 8th, boiling checkout gear, the 9th, control part.

Label 11 is hook buttons, the 12nd, hook, the 15th, solenoid, the 17th, cover lock body, the 18th, back-moving spring, the 25th, lid lock apparatus.

The following describes its concrete structure.

Pot 2 in loading and unloading are inserted with freely on main body 1, the bottom of main body 1 and sidepiece be provided be used to heat in pots 2 heater 3.Also have, switching is provided with the lid 4 that possesses the interior cap 4a of the upper opening of pot 2 in the covering freely on main body 1, and seals the also sealing of upper opening of interior pot 2 with interior cap 4a.

Lid 4 is provided with to be become from the confined space of the interior pot 2 inside steam channel 5 to unique steam (vapor) outlet of outside, and steam channel is provided with regulator 6.

On the inner core 20 in regulator 6 is arranged at and is installed on the cap 4a, and constitute by hole 6a that forms narrow steam channel 5 and the steel ball 6b that stops up this hole 6a.And, if the vapour pressure of interior pot 2 inside exceeds authorized pressure, then lift steel ball 6b and make from hole 6a pressure release by its superfluous vapour pressure, if pressure is lower than authorized pressure, then steel ball 6b again plugging hole 6a vapour pressure is increased.By this repeatedly, the pressure in interior pot 2 and the interior cap 4a can be adjusted to necessarily.

Near regulator 6, be provided with device for opening 7 towards steel ball 6b, make not plugging hole 6a (steel ball 6b is positioned on the position of plugging hole 6a not) of steel ball 6b by utilizing this device for opening 7, thereby the pressure in the pot 2 do not increase in making.

Device for opening 7 roughly is tetragonal frame type shape, and it is provided with the collision block portion 23 that when carrying out the pressure regulation action steel ball 6b is moved, and steel ball 6b meets by following seal 21 in this collision block portion 23.

Steam channel 5 is provided with boiling checkout gear 8, utilizes by the steam-heated temperature detection steam by steam channel 5.Main body 1 is provided with control part 9, the boiling detection information of boiling checkout gear 8 is input to this control part 9, with the action of control heater 3 and device for opening 7.

And, on housing 4b, be fixed with the installing plate 13 that is used to strengthen and install part.

When being installed in interior cap 4a on the housing 4b, the part that is positioned on the housing 4b at inner core 20 is provided with urceolus 14, to constitute the part of steam channel 5.

On urceolus 20, be provided with and be used for the hole that above-mentioned collision block portion 23 connects, with seal 21 cover these holes on every side to prevent that steam from spilling.

Device for opening 7 by being arranged at guide rib 4c and the guide grab 4d guiding on the housing 4b, can successfully move.Also have, between the side of the helix tube 15 that device for opening 7 is moved and collision block portion 23, be provided with working spring 22, not to solenoid 15 energisings the time, make it action and disconnect with regulator 6.

Label 12 is hooks, and making to be that rotate at the center with the axle 19 that is installed on the installing plate 13.Hook 12 is provided with hook 12a, by combining with joint portion 24 on the main body 1, keeps cover 4 unlimited.

Label 11 is hook buttons, is arranged at the front of main body 1, if push and rotate this hook button 11, then is arranged at claw 11a swivel hook 12 on the hook button 11 and can makes hook 12a break away from joint portion 24 and open to cover 4.

Label 25 is lid lock apparatus, is made of cover lock body 17 and back-moving spring 18.Cover lock body 17 rotates with back-moving spring 18 and is installed on freely on the lock body seat 16 that is installed on the housing 4b.And 18 pairs of these lock body 17 reinforcings of back-moving spring are to remove the locking of hook 12.

The leading section of cover lock body 17 is lock section 17a, when the solenoid 15 of device for opening 7 moves, enters into the action (with reference to Fig. 4) of the downside and the lock hook 12 of hook 12.

Have protuberance 17b at the position than the more close center of rotation of lock section 17a of cover lock body 17, by device for opening 7 this protuberance of pushing 17b, lock section 17a just enters the downside of hook 12.At this moment, because protuberance 17b is positioned at the position near center of rotation, therefore,, displacement is moved with enlarging for lock section 17a.

In addition, in the present embodiment,, in the time of dwindling displacement, can also realize by protuberance 17b is arranged at than lock section 17a away from the position of center of rotation though enlarged the displacement of lock section 17a.

That is to say, promptly be used in distance that the device for opening 7 that carries out pressure regulation action moves with different in the mobile distance of size permissible range inner lock part 17a of lid 4 inside, also can carry out optimum action by position and the size of suitably regulating and design raised part 17b.

Use step according to reality illustrates action below.

In the pot 2, interior pot 2 is put into main body 1 and closed the lid 4 in the rice of the aequum that the user will wash in a pan and an amount of water are put into.

Secondly, when button (not shown) is cooked in operation, then begun to cook by control part 9, control part 9 makes heater 3 actions, pot 2 in the heating.

At this moment, as Fig. 2 and shown in Figure 5, by utilizing not plugging hole 6a of steel ball 6b that device for opening 7 makes regulator 6, then in pot 2 pressure inside can not increase.This is the energising that suppresses to solenoid 15 owing to by control part 9, thereby utilizes the spring force of working spring 22, makes collision block portion 23 protrude in steel ball 6b one side, and steel ball 6b is moved.

Thus, cover lock body 17 is broken away from the control of device for opening 7, and utilizes the spring force of back-moving spring 18 that lock section 17a is moved, and to remove the locking of hook 12, therefore, the locking of hook 12 is disengaged, and at this moment, can open and cover 4.

Add thermal control by what control part 9 was used for cooking deliciously, soon, nearly during boiling point, steam is emitted to lid 4 outsides by steam channel 5 from hole 6a in interior pot 2 inside.

In this process, boiling checkout gear 8 is heated, and temperature rises.And if surpass 98 ℃ to boiling, because the increase that lets off steam, therefore, the temperature of the checkout gear 8 that seethes with excitement rises immediately, and control part 9 is judged as boiling according to this temperature, as Fig. 1 and shown in Figure 4, makes device for opening 7 move regulator 6 and becomes an effective side.In other words, by switching on by 9 pairs of solenoids 15 of control part, make it the action and draw in collision block portion 23, steel ball 6b just moves to the position of plugging hole 6a, regulator becomes effectively.

At this moment, because device for opening 7 moves to hook 12 1 sides, therefore, cover lock body 17 moves similarly, makes lock section 17a enter into the downside of hook 12 and lock hook 12.

In interior pot 2 inside, because the outlet of the steam that takes place is blocked, thereby vapour pressure increases the boiling point rising.Soon, when vapour pressure reached the degree of lifting steel ball 6b, steam just from the clearance leakage between hole 6a and the steel ball 6b, by little by little repeating this process, just can be adjusted to pressure necessarily.

If continue to add high pressure, because its high permeability, therefore rice, as Fig. 2 and shown in Figure 5, turned back to the steel ball 6b of device for opening 7 pushing regulators 6 again by well-done, the state that hole 6a is still opening wide, and make regulator 6 become invalid.

At this moment, even covering 4 is out of shape the gap 26 that makes between hook 12 and the lock section 17a because of pressure or temperature and disappears, and cover lock body 17 is bitten into to be covered on 4 and can not move, because device for opening 7 and cover lock body 17 are for dividing body structure, therefore, not moved by it with influencing, and can proceed pressure and regulate.

Because control part 9 continues to utilize heater 3 heating, therefore, the interior pot 2 inner boilings (100 ℃) that continue under the atmospheric pressure, the water of pot 2 inside in rice fully no longer absorbs soon.After control part 9 judges this, weaken heating and transfer to the steamed rice stage.Finish to cook after having steamed certain hour.

At this moment, as mentioned above, even cover 4 distortion lock section 17a is nipped by hook 12, when pressure descended when transferring to this stage, because the distortion of lid 4 also disappears, therefore, cover lock body 17 can utilize back-moving spring 18 that lock section 17a is moved, to unlock in this moment.

As mentioned above, in the present invention, because cover lock body 17 and device for opening 7 can move alone, therefore, make cover lock body 17 not move even cover 4 because of pressure is out of shape, device for opening 7 also can move, and can proceed pressure and regulate, therefore, situations such as pressure too increases can not appear, without detriment to security.

Also have, in heating process, even nipped because of covering 4 distortion lock section 7a, in case distortion disappears, because cover lock body 17 can unlock by back-moving spring 18, therefore, the convenience of use can not worsen yet.

Have again,, its displacement can be set for differently, therefore, can increase the free degree of design, and compact structure can be made by cover lock mechanism with device for opening 7 by being arranged at the effect of the protuberance 17b on the cover lock body 17.

Claims

1. a cooker has: load and unload the interior pot of folding and unfolding freely on main body; The lid of pot in sealing and the sealing; Be arranged at the steam channel that covers; Be arranged at the regulator on the steam channel; Be used to open steam channel, the device for opening of being opened by the pressure regulation of regulator action; And lid is fastened on hook on the main body, it is characterized in that,

Except above-mentioned device for opening, also be provided with the lid lock apparatus that closes with above-mentioned dogging and lid is opened in addition, when above-mentioned device for opening makes above-mentioned regulator carry out the pressure regulation action, above-mentioned device for opening moves above-mentioned lid lock apparatus, above-mentioned lid lock apparatus and above-mentioned dogging are closed, when above-mentioned device for opening action was opened above-mentioned regulator, above-mentioned device for opening did not move and opens above-mentioned regulator in linkage with above-mentioned lid lock apparatus;

Reinforcing constitutes the back-moving spring of its engagement release to above-mentioned lid lock apparatus by the cover lock body that closes with above-mentioned dogging with to the cover lock body.

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

Above-mentioned cover lock body has the lock section of the above-mentioned hook of locking and the mobile protuberance by the action of above-mentioned device for opening on different positions.