CN101586820B

CN101586820B - Heating cooker

Info

Publication number: CN101586820B
Application number: CN2009101437043A
Authority: CN
Inventors: 山崎孝彦; 近藤正满
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 2008-05-22
Filing date: 2009-05-22
Publication date: 2012-07-18
Anticipated expiration: 2029-05-22
Also published as: JP2009281663A; JP5213240B2; CN101586820A

Abstract

The invention provides a heating cooker, capable of preventing the adverse effect on a tubular heater under the impacting and vibrating action. The heating cooker comprises a heat chamber (11) for accepting the food, a tubular heater (12) arranged on the inner top surface of the heat chamber (11), a reflecting plate (21) through which the tubular heater (12) is inserted into a flanging part (21B),a thermal baffle (22) for shielding the heat from the reflecting plate (21), and a heater stent ( 24) for fixing the tubular heater (12). The heater stent (24) is fixed on the thermal baffle for fixi ng the tubular heater in the suspended mode.

Description

Heating device

Technical field

The present invention relates to a kind of heating device, this heating device is located on the end face of the heating clamber of taking in food, contains tubular heater, reflecting plate and thermal insulation board.

Background technology

Use heaters such as Glass tube heater, halogen heater in the existing heating device mostly; Concrete structure is that heating wire is set in heat-resistant glass tube; Insulators such as upper heater insulator are set at the two ends of glass tube, and fix splicing ear (example wherein can be opened 2003-114030 with reference to the jp patent publication spy) through the heater insulation body.But it is shock-resistant and vibratility is relatively poor to be installed in Glass tube heater in this heating device, halogen heater etc., impacts or vibration can produce adverse influence to glass tube.

A kind of existing heating device 100 shown in Fig. 5; Wherein on the end face of heating clamber 101, be provided with top board 102; The top of top board 102 is provided with and is used for carrying out heat-reflecting reflecting plate 103, and the top of reflecting plate 103 is provided with thermal insulation board 104, and tubular heater 105 is arranged to pass reflecting plate 103.

The pipe portion of tubular heater 105 has used glass ceramics pipe 106, and splicing ear 107 has used heater insulation 108 as insulant.Through heater insulation 108 is installed on the heater support 110, tubular heater 105 just can be fixed.Heater support 110 then relies on screw 112 to be installed on the sidewall 111.

But; In the structure of described in the above heating device 100; Because heater support 110 is to rely on screw 112 to be installed on the sidewall 111; Therefore receive under the situation of shock and vibration at heating device 100, such shock and vibration just possibly be delivered on the heater support 110 from sidewall 111.In addition,, also can do to take place corresponding motion thereupon, keep the free degree to a certain degree even receive the shock and vibration effect because reflecting plate 103 is arranged on the top of upper plate 102 with thermal insulation board 104.

On the other hand, because heater support 110 is to rely on screw 112 to be installed on the sidewall 111, heater insulation of therefore being fixed by heater support 110 108 does not almost have the free degree.Like this, when having impact or vibration, the turn-up portion 113 on reflecting plate 103 and/or the thermal insulation board 104 will collide with glass ceramics pipe 106, and glass ceramics pipe 106 is produced harmful effects.

Summary of the invention

The present invention is intended to solve said existing issue, and purpose provides a kind of under the situation of being impacted or vibrating, can the inhibition tubular heater is produced dysgenic heating device.

In order to solve said existing issue, heating device of the present invention comprises: the heating clamber of taking in food; Be located at the tubular heater on the inner top surface of heating clamber; Be provided with the reflecting plate in the hole that supplies the tubular heater insertion; Block thermal insulation board from the reflecting plate heat; Keep the fixing heater support of tubular heater with being fixed on the thermal insulation board and with the mode of suspending.

Like this; Because heater support is fixed on the thermal insulation board; Tubular heater remains on the heater support through the mode of suspending, thus in case impacted or vibrated, heater support will with reflecting plate, thermal insulation board as a body vibration; Therefore can prevent to protect tubular heater owing to impact or vibrate the situation generation that the tubular heater that causes is run into reflecting plate or thermal insulation board.

In addition, the heater support described in the heater of the present invention has elasticity, and the insulator of tubular heater is inserted into said heater support, and said heater is fixed on the said heater support.

Like this; Because heater support has elasticity, when being impacted or vibrating, just can absorb shock and vibration through the strain of heater support; Impact or vibration can not be passed on the tubular heater, thereby can further suppress the harmful effect to the tubular heater generation.

The technique effect that the present invention produces is following.Heating device of the present invention is through being fixed on heater support on the thermal insulation board; Tubular heater is fixed on this heater support with the mode of suspending; Even make under the situation of being impacted or vibrating, can suppress the harmful effect that tubular heater is produced.

Description of drawings

Fig. 1 is the side view of the heating device in one embodiment of the present of invention,

Fig. 2 is the vertical view of the heating device among this embodiment,

Fig. 3 is the sectional view along the A-A line shown in Fig. 2,

Fig. 4 is the sectional view along the B-B line shown in Fig. 2,

Fig. 5 is the sectional view of existing heating device.

In the above-mentioned accompanying drawing, 10 is heating device, and 11 is heating clamber; 12 is tubular heater, and 12A is a coil heater, and 12B is the argon gas heater; 17C, 18C are heater insulation (insulator), and 21 is reflecting plate, and 21B, 21C are turn-up portion (flange hole); 22 is thermal insulation board, and 22B, 22C are turn-up portion (flange hole), and 24 is heater support.

The specific embodiment

Come with reference to the accompanying drawings one embodiment of the present of invention are elaborated.It is pointed out that such embodiment does not have the effect that limits the scope of the invention.

(embodiment)

As depicted in figs. 1 and 2, heating device 10 comprises: take in food heating clamber 11, be located at tubular heater 12 on the inner top surface of heating clamber 11, be located at circulating fan 14, its bottom on heating clamber 11 rear walls and be bearing in the gate 15 on the front openings with the mode of freely rotating and be located at the bottom and be used to produce the magnetron 16 of frequency electromagnetic waves.

Tubular heater 12 is the heaters that heat in the heating clamber 11, is made up of 2 spiral heater 12A and 1 argon gas heater 12B being located between these 2 spiral heater 12A.As shown in Figure 3, the 17A of pipe portion of spiral heater 12A has used the glass ceramics pipe, and that the insulator of splicing ear 17B uses is the sub-17C of heater insulation.

The structure of argon gas heater 12B is as shown in Figure 4, charges into argon gas in the 18A of pipe portion, and the two ends of the 18A of pipe portion seal with sealing 19.Because the two ends of the 18A of pipe portion of argon gas heater 12B rely on sealing 19 to seal, so entire length is compared the length (as shown in Figure 2) that will grow sealing with spiral heater 12A.In addition, 12A is the same with spiral heater, and the 18A of pipe portion has used the glass ceramics pipe, and terminal 18B has used the sub-18C of heater insulation as insulator.

In addition, like Fig. 3 and shown in Figure 4, heating device 10 also comprises: be located at heating clamber 11 tops reflecting plate 21, be located at thermal insulation board 22 and the heater support 24 that is located at the thermal insulation board outside and heater 12 is play supporting role in the outside of reflecting plate 21.

Reflecting plate 21 is located at the upside of top board 26, is to be used for heater 12 (being spiral heater 12A and the argon gas heater 12B) reflect heat that produces is returned the parts of heating clamber 11.On the wall 21A of the left and right sides of reflecting plate 21, turn-up portion (flange hole) 21C that is provided with turn-up portion (flange hole) 21B that is used for fixing spiral heater 12A and is used for fixing argon gas heater 12B.

Top board 26 is arranged on the upper limb of sidewall 27.

Turn-up portion 21B does not come in contact with the left and right sides wall 21A of reflecting plate 21 when letting the 17A of pipe portion of spiral heater 12A insert wherein and the hole of establishing, and turn-up portion 21C does not come in contact with the left and right sides wall 21A of reflecting plate 21 when inserting wherein for the 18A of pipe portion with the argon gas heater and the hole of establishing.

Thermal insulation board 22 is arranged on the outside of reflecting plate 21, and this is to be used to block the parts from reflecting plate 21 heats.The left and right sides wall 22A of thermal insulation board 22 is provided with turn-up portion 22B, the 22C identical with turn-up portion 21B, and wherein turn-up portion 22B is that spiral heater 12A establishes, and turn-up portion 22C is that argon gas heater 12B establishes.

Turn-up portion 22B is the hole in order to let the 17A of pipe portion of spiral heater 12A under the state that does not come in contact with miscellaneous part, insert.The left and right sides sidewall 22A of thermal insulation board 22 is provided with cover plate portion 29, and cover plate portion 29 is provided with the turn-up portion 22C that establishes for argon gas heater 12B.Turn-up portion 22C is the hole in order to let the 18A of pipe portion of argon gas heater 12B under situation about not coming in contact with miscellaneous part, insert.

Heater support 24 is installed in through screw 28 on 2 sidepiece 22D of thermal insulation board 22 upper surfaces, and this is to be used for mode parts that tubular heater 12 (spiral heater 12A, argon gas heater 12B) is supported with suspension.Because 2 heater support 24 that are installed on the sidepiece 22D are the parts with respect to the B-B line symmetry that marks among Fig. 2; Therefore only the heater support 24 on the sidepiece 22D that is installed in a side is described here, omit explanation the heater support 24 on the sidepiece 22D that is installed in opposite side.

Heater support 24 has elasticity, and elastic deformation can take place, and that kind as shown in Figure 2 is provided with from the two ends of pedestal 31 protuberance 32 outstanding towards the place ahead and rear and from the outstanding central spud 33 of the central part of pedestal 31.In addition, as shown in Figure 4, the end of pedestal 31 is covered on the right side 22C of thermal insulation board 22 from the top, and relies on screw 28 to be installed on the 22C of right side.

Spiral heater 12A is fixed/remains in the forward and backward protuberance 32, and argon gas heater 12B is fixed/remains in the central spud 33.Because the entire length of argon gas heater 12B is longer than spiral heater 12A, so central spud 33 is more outstanding than front and back protuberance 32.

Because the end of pedestal 31 is installed on the 22C of right side through screw 28, so under the situation of being impacted or vibrating, heater support 24 meeting and reflecting plate 21 or thermal insulation board 22 same moved further.Therefore furtherly, because heater support 24 has elasticity,, also can will impact or vibrate and absorb through the elastic deformation of heater support 24 even impacted or vibrate.

Here, the elasticity size of heater support 24 can be adjusted through length, width or the thickness etc. of front and back protuberance 32 or central spud 33.Particularly, with forward-and-rearward protuberance or central spud do shortlyer, wideer or thicker, elasticity will diminish.

Since the sealing of argon gas heater 12B 19 shock-resistant with vibratility a little less than, the central spud 33 that therefore can extend makes elasticity become big.Like this, the impact or the vibration that are applied on the argon gas heater 12B can be well absorbed.

As shown in Figure 3, the fore-end that is positioned at the protuberance 32 in the place ahead is provided with reclinate bending sheet 32A, and this bending sheet 32A is provided with insulator retaining hole 32B.The insulator retaining hole 32B here is meant the hole of the sub-17C of heater insulation that is used for fixing spiral heater 12A.Concrete fixed form is that the sub-17C of the heater insulation of spiral heater 12A is inserted in the insulator retaining hole 32B, the sub-17C of heater insulation is held is fixed on the heater support 24 (preceding protuberance 32).

Through the sub-17C of heater insulation is fixed on the heater support 24, can make spiral heater 12A keep/be fixed on the heater support 24 with the mode that suspends.In this state, the 17A of pipe portion of spiral heater 12A is inserted into the state that does not come in contact with turn-up portion 21B and turn-up portion 22B.

Rear protuberance 32 is identical with the place ahead protuberance 32 shapes, therefore omits the explanation to rear protuberance 32 at this.

As shown in Figure 4, the leading section of central spud is provided with the bending sheet 33A of downward bending, and this bending sheet 33A is provided with insulator retaining hole 33B.This insulator retaining hole 33B is the fixing hole of the sub-18C of heater insulation that is used to keep argon gas heater 12B.Concrete fixed form does, the sub-18C of heater insulation of argon gas heater 12B is inserted among the insulator retaining hole 33B, and the sub-18C of heater insulation is fixed on the heater support 24.

Through keeping the sub-18C of heater insulation to fix, argon gas heater 12B is fixed on the heater support 24 with the mode that suspends with heater support 24.In this state, its 18A of pipe portion and turn-up portion 21C and turn-up portion 22C did not come in contact after argon gas heater 12B inserted.

As stated; Heater support 24 is installed on the thermal insulation board 22 through screw 28; Spiral heater 12A and argon gas heater 12B are fixed on the heater support 24, and spiral heater 12A and argon gas heater 12B are installed on the heater support 24 with the mode that suspends.

Under the situation of being impacted or vibrating, heater support 24 and reflecting plate 21 and thermal insulation board 22 synchronously vibrates and reflecting plate 21 and thermal insulation board 22 are done as a whole the vibration.Therefore; The 17A of pipe portion of spiral heater 12A and turn-up portion 21B and turn-up portion 22B do not come in contact; The 18B of pipe portion of argon gas heater 12B does not come in contact with turn-up portion 21C and turn-up portion 22C yet, so can suppress the harmful effect to spiral heater 12A and argon gas heater 12B generation.

In addition; Because heater support 24 has elasticity; Even impacted or vibrated; Also can rely on the elastic deformation of heater support 24 will impact or vibrate and absorb, impact or vibration just can not be delivered to spiral heater 12A and argon gas heater 12B, so can suppress harmful effect further spiral heater 12A and argon gas heater 12B generation.

Moreover if lengthening central indentation 22, it is big that the elasticity of heater support 24 just becomes.Like this, the shock and vibration that affact on the argon gas heater 12B just can be inhibited effectively, can protect the sealing 19 of argon gas heater 12B well.

Have, because heater support 24 has elasticity, the vibration or the impact that are on the torsional direction also can be absorbed again.Therefore; Keep the fixing central spud 33 of argon gas heater 122B one-body molded even will be used for the fixing front and back protuberance of holding tray pipe heater 12A 32 with being used to; Also can inhibitory action impact or vibration on spiral heater 12A and the argon gas heater 12B; So just needn't distinguish and form front and back protuberance 32 and central spud 33 independently, thereby can reduce number of components.

Heating device 10 of the present invention is not limited to the above embodiments, can also do suitable distortion, improvement.For example, though heater support 24 can be made of one shaping, can each heater be installed on the different heaters support.

In sum, the present invention is applicable to and is located at heating device on the heating clamber end face that is used to take in food, that contain tubular heater, reflecting plate and thermal insulation board.

Claims

1. heating device is characterized in that comprising:

Take in the heating clamber of food;

Be located at the tubular heater on the inner top surface of heating clamber;

Be provided with the reflecting plate in the hole that is used to insert tubular heater;

Block the thermal insulation board of the heat that said reflecting plate sends; With

Be fixed on the thermal insulation board and and keep the fixing heater support of tubular heater with the mode of suspending.

2. heating device as claimed in claim 1 is characterized in that: said heater support has elasticity, and the insulator of tubular heater is inserted into said heater support, and said tubular heater is fixed on the said heater support.