CN208192918U - A kind of baking machine with long service life - Google Patents

Abstract

The utility model relates to a kind of baking machines with long service life.Heat insulation foam in existing baking machine is easy to cause wiring board short-circuit because of water suction, influences baking machine service life.The utility model includes ontology and upper cover, ontology includes pedestal, wiring board, baking tray, heater and bottom cover, bottom cover and pedestal are enclosed cavity, pedestal is equipped with overhead gage, bottom cover is equipped with lower baffle plate, and overhead gage is vertically docked with lower baffle plate, and cavity is separated to form heat-insulation chamber and heat dissipation cavity, wiring board is mounted in heat-insulation chamber, and heat dissipation cavity is between heat-insulation chamber and baking tray.The overhead gage and lower baffle plate that can match docking are respectively set on original pedestal and bottom cover, and so as to form the heat dissipation cavity of the heat-insulation chamber and isolation heater and wiring board installed for wiring board, both ensured that wiring board local environment temperature met it and works normally requirement, also effectivelying prevent wiring board, there is a situation where short circuits due to contacting conductive body, it is safe to ensure that wiring board uses, extends the service life of baking machine.

Description

A kind of baking machine with long service life

Technical field

The utility model relates to kitchen appliance technical fields, and in particular to a kind of baking machine.

Background technique

Baking machine is used for fried food materials.Existing baking machine includes ontology and upper cover, before ontology includes pedestal, is mounted on pedestal The wiring board in portion, the baking tray for being mounted on base top surface, the heater being mounted below baking tray and the bottom being mounted below pedestal Lid, bottom cover and pedestal are enclosed the cavity of installation wiring board, and wiring board is equipped with heat insulation foam towards fever side, prevents wiring board Because environment temperature is excessively high occur can not normal use the case where.When in use, wiring board leads to extraneous power supply, and controls hair Hot body running, heat insulation foam can be effectively reduced.But the baking machine of this structure has the following deficiencies: baking machine usually in tides such as kitchens It is used under wet environment, although heat insulation foam has preferable heat insulation, the moisture in air can be absorbed, and then have certain Electric conductivity, cause wiring board to occur short-circuit situation because contacting with heat insulation foam, there are security risks, and having an effect on wiring board makes Use the service life.

Utility model content

In order to solve the deficiencies in the prior art, the utility model provides a kind of baking machine with long service life, by will be every Hot cotton is improved to the overhead gage and lower baffle plate of docking, has both played heat-insulated effect, also assures that wiring board uses safe, extension grillING Machine service life.

The utility model is accomplished by the following way: a kind of baking machine with long service life, including ontology and upper cover, ontology Including pedestal, the wiring board that is mounted on pedestal front, the baking tray for being mounted on base top surface, the heater being mounted below baking tray with And it is mounted on the bottom cover below pedestal, bottom cover and pedestal are enclosed the cavity for installing wiring board, and the base end face is equipped with upper Baffle, the bottom cover top surface are equipped with lower baffle plate, and the overhead gage is vertically docked with lower baffle plate, and cavity is separated to form each other solely Vertical heat-insulation chamber and heat dissipation cavity, the wiring board are mounted in heat-insulation chamber, the heat dissipation cavity be located at the heat-insulation chamber and baking tray it Between.The overhead gage and lower baffle plate that can match docking is respectively set, and on original pedestal and bottom cover so as to form for route The heat-insulation chamber of plate installation and the heat dissipation cavity that heater and wiring board is isolated, had both ensured that wiring board local environment temperature was meeting it just Normal job requirement, also effectivelying prevent wiring board, there is a situation where short circuits due to contacting conductive body, it is ensured that wiring board using safe, Extend the service life of baking machine.Heat dissipation cavity plays what trap heat was transmitted to heat-insulation chamber between heater and heat-insulation chamber Effect, it is ensured that environment temperature meets the requirement of wiring board normal work in heat-insulation chamber.

Preferably, the root edge of the overhead gage is lower than the wiring board bottom surface.There is assembly between lower baffle plate and overhead gage Wiring board is arranged above overhead gage root edge in gap, effectively prevent the hot-fluid for entering heat-insulation chamber by fit-up gap can be direct Effect is in the circuit board, it is ensured that wiring board works normally.

Preferably, the base end face is downwardly extending the overhead gage, the bottom cover top surface upwardly extends to be formed The lower baffle plate, the projection of the overhead gage and lower baffle plate in the horizontal plane are overlapped.Overhead gage and pedestal integral type are made, lower block Plate is made with bottom cover integral type, facilitates processing.The projection of the overhead gage and lower baffle plate in the horizontal plane is overlapped, after mounting, The root edge matching of overhead gage contradicts on the apical margin of lower baffle plate, it is ensured that heat-insulation chamber and heat dissipation cavity are relatively isolated.

Preferably, the bottom cover rear portion forms the bottom wall of the heat dissipation cavity, opens up on the bottom wall and lead to extraneous Heat release hole, the heat release hole are arranged towards baking tray.The heat that heater is passed to heat dissipation cavity can be by heat release hole outwardly space Discharge, it is ensured that heat dissipation cavity temperature is in lower numerical value, and then guarantees that the temperature of heat-insulation chamber meets wiring board and works normally requirement. Bottom cover forms the bottom wall of heat dissipation cavity, facilitates processing heat release hole.

Preferably, the wiring board is equipped with key, base top surface front is equipped with perforation, and the base top surface front is covered It is stamped pad pasting, key-top passes through perforation and contradicts on pad pasting bottom surface, and it is recessed that the perforation upper port peripheral indentation forms annular Slot.Increase the vertically movable stroke of key by setting annular groove, it, can in the case where ensuring that pad pasting does not swell excessively Ensure that push-botton operation is smooth, prevent user because operation has some setbacks apply compared with noticeable effort when cause the situation of key breakage to be sent out It is raw, it is ensured that key service life, moreover it is possible to reduce the assembly precision requirement to button, improve assembly efficiency, reduce finished product fraction defective.

Preferably, the depth of the annular groove is I, 0.5mm≤I≤1mm, foot can be provided for the finger of user Enough avoiding spaces increase the vertical stroke of key with this, also assure that perforation periphery has preferable structural strength, prevent from perforating Peripheral edge margin will not be damaged because firmly pressing because of user.As I > 1mm, it is affected to perforation peripheral edge margin thickness, So that the wall thickness of above-mentioned zone is relatively thin, structural strength is not good enough, leads to the easy breakage of periphery of perforating；It is finger as I < 0.5mm The evacuation depth of offer is smaller, is that the increased vertical stroke of key is smaller, causes usage experience to improve unobvious.

Preferably, the annular groove external profile diameter is H, 13mm≤H≤16mm, it should ensure that annular groove diameter is big In finger resistance surface size, it is ensured that finger can protrude into annular groove and increase the vertical stroke of key with this, it is also to be ensured that perforation The structural strength of periphery.As H > 16mm, the perforation large range of wall thickness of periphery is relatively thin, reduces the knot of perforation peripheral edge margin Structure intensity is easy damaged by pressure in finger force；As H < 13mm, finger can not protrude into annular groove, and key top surface can not It is reduced at the upper port of perforation, the vertical stroke of key is caused to be unable to reach preset value.

Preferably, trim bottom surface periphery is equipped with oblique faying surface in a ring, the lid top surface, which is equipped with, is in The skewed horizontal load face of annular, trim lid close above lid, so that oblique faying surface contradicts on skewed horizontal load face.It is decorating The oblique faying surface that can match conflict and skewed horizontal load face is respectively set on lid edge and lid top surface, so that lid and trim When horizontal direction deformation occurs, oblique faying surface and the matching of skewed horizontal load face contradict and convert vertical effect for horizontal direction active force Power had both effectively prevent trim the case where rupture occur because horizontal direction squeezes lid, lid is also effectively prevent to squeeze because of trim The case where pressing and deforming, it is ensured that the service life of baking machine.

Preferably, being reserved with gap between the oblique faying surface and skewed horizontal load face, the width in the gap is A, 0.1mm≤A≤1mm, both reserved deformation space for the trim of expansion, and also effective control room gap width will not influence baking machine Overall aesthetics.As A < 0.1mm, sufficient deformation sky is not reserved between oblique faying surface and skewed horizontal load face for trim Between, so that trim needs to cope with the expansion of its horizontal direction by vertical displacement；As A > 1mm, gap is larger, influences grillING The aesthetics of machine.

Preferably, the width of the oblique faying surface be B, 1.4mm≤B≤2.1mm, both ensured oblique faying surface and tiltedly To between supporting surface have biggish contact area, moreover it is possible to effectively control trim thickness, reduce production cost.When oblique overlap joint When the angle in face is fixed, the thickness of the more big then trim of the width of oblique faying surface is bigger.As B < 1.4mm, oblique faying surface Contact area is smaller between skewed horizontal load face, leads to trim and lid can deformation occurs due to contact area active force is excessive. As B > 2.1mm, causes the thickness of trim excessive, improve production cost.

Preferably, the outer rim in the skewed horizontal load face is arranged higher than inner edge, between the skewed horizontal load face and lid top surface Angle be R, 100 °≤R≤170 °.When the speed of expansion of trim be greater than lid when, oblique faying surface can expand and with it is oblique Supporting surface contradicts, and oblique overlap joint applies horizontal applied force towards skewed horizontal load face, meanwhile, skewed horizontal load face can be to oblique faying surface Apply vertical reaction force, so that trim is vertically detached from lid, the expansion that skewed horizontal load face upper area forms trim is empty Between.When 170 ° of R >, skewed horizontal load face tends to be horizontal in lid top surface, causes skewed horizontal load face that can not limit trim level To offset；When 100 ° of R <, skewed horizontal load face tends to the water for vertically causing skewed horizontal load face that can not will be subject in lid top surface It puts down to active force and is converted into vertical active force, trim is easy the case where rupturing because contradicting with skewed horizontal load face.

Preferably, be equipped with the injecting glue slot of annular on the inside of the inner edge of the skewed horizontal load face, injecting glue slot inner edge it is radial to It inside extends to form and leads glue groove, the gas vent led glue groove inner end bottom surface and open up perforation, the outer rim of the injecting glue groove bottom is higher than Inner edge setting.Glue is filled in injecting glue slot, glue is used for adhesion lid and trim.When glue expanded by heating, glue meeting From the outside to the core along glue groove flowing is led, gas vent is for excluding to lead the air in glue groove, it is ensured that glue smooth outflow.

The utility model has the beneficial effects that be respectively set on original pedestal and bottom cover can match docking overhead gage and Lower baffle plate, and so as to form the heat dissipation cavity of the heat-insulation chamber and isolation heater and wiring board installed for wiring board, both ensured Wiring board local environment temperature meets it and works normally requirement, also effectively prevent wiring board that short circuit occurs because contacting conductive body The case where, it is ensured that wiring board extends the service life of baking machine using safe.

Detailed description of the invention

Fig. 1 is the utility model schematic cross-sectional view；

Fig. 2 is bottom cover and pedestal part disassemblying structure schematic diagram；

Fig. 3 is the utility model broken section structural schematic diagram；

Fig. 4 is upper cover disassemblying structure schematic diagram；

Fig. 5 is cover body structure schematic diagram；

Fig. 6 is lid and trim assembling structure partial schematic sectional view；

In figure: 1, ontology, 11, pedestal, 111, overhead gage, 12, wiring board, 121 keys, 13, heater, 14, bottom cover, 141, lower baffle plate, 142, heat release hole, 15, heat-insulation chamber, 16, heat dissipation cavity, 17, perforation, 18, pad pasting, 19, annular groove, 2, upper cover, 21, lid, 211, skewed horizontal load face, 212, injecting glue slot, 213, lead glue groove, 214, gas vent, 22, trim, 221, oblique take Junction, 3, baking tray.

Specific embodiment

Make further with substantive distinguishing features of the specific embodiment to the utility model with reference to the accompanying drawings of the specification It is bright.

A kind of baking machine with long service life as shown in figures 1 to 6, is made of ontology 1 and upper cover 2, and ontology 1 includes pedestal 11, the wiring board 12 of 11 front of pedestal, the baking tray 3 for being mounted on 11 top surface of pedestal, the heater for being mounted on 3 lower section of baking tray are mounted on 13 and it is mounted on the bottom cover 14 of the lower section of pedestal 11, bottom cover 14 and pedestal 11 are enclosed the cavity of installation wiring board 12, described 11 bottom surface of pedestal is equipped with overhead gage 111, and 14 top surface of bottom cover is equipped with lower baffle plate 141, the overhead gage 111 and lower baffle plate 141 Vertical docking, cavity is separated to form and is mutually independent heat-insulation chamber 15 and heat dissipation cavity 16, the wiring board 12 is mounted on heat-insulated In chamber 15, the heat dissipation cavity 16 is between the heat-insulation chamber and baking tray 3.

In the present embodiment, recess forms heavy platform downwards in the middle part of the top surface of the pedestal 11, and heater 13 is mounted on heavy platform Bottom, baking tray 3 are inserted into heavy platform from top to bottom and are bonded with 13 top surface of heater matching, and control heater is equipped in pedestal 11 The wiring board 12 of 13 work.When in use, wiring board 12 control heater 13 work, heater 13 generate heat by with its The baking tray 3 of fitting is transferred on food materials, realizes food materials baking.Due to heater 13 and do not have the effect for orienting transmitting heat, So heater 13 generate heat can dissipate around, heater 13 by its periphery be arranged heat insulation structural come improve to Baking tray 3 conveys the efficiency of heat, and when in use, heavy platform bottom surface both plays the role of supporting heater 13, also acts as trap heat The effect transmitted downwards, still, heat can be still transferred at wiring board 12 by heavy platform bottom surface, for this purpose, in order to ensure route Plate 12 will not because environment temperature is excessively high occur can not normal use the case where, can assist side 12 towards 13 side of heater be arranged Heat insulation structural.

In the present embodiment, the heat insulation structural includes overhead gage 111 and the setting that 11 bottom surface of pedestal is arranged in Lower baffle plate 141 in 14 top surface of bottom cover, when lid 2 closes on the bottom surface of pedestal 11 bottom cover 14 from bottom to top, the upper gear Plate 111 is vertically docked with lower baffle plate 141, and cavity is separated to form and is mutually independent heat-insulation chamber 15 and heat dissipation cavity 16, the line Road plate 12 is mounted in heat-insulation chamber 15, and the heat dissipation cavity 16 is between the heat-insulation chamber and baking tray 3, overhead gage 111 and lower block Plate 141 matches split, plays the role of isolation radiating chamber 16 and heat-insulation chamber 15.

In the present embodiment, 11 bottom surface of pedestal is downwardly extending the overhead gage 111,14 top surface of bottom cover to On extend to form the lower baffle plate 141, the projection of the overhead gage 111 and lower baffle plate 141 in the horizontal plane is overlapped.The pedestal 11 bottom surfaces are recessed form mounting groove upwards, and the lid of bottom cover 14 closes on mounting groove and forms the cavity.The overhead gage 111 Be arranged in mounting groove, the apical margin of overhead gage 111 and the roof of mounting groove are affixed, the both ends ora terminalis of overhead gage 111 respectively with peace The side wall of tankage is affixed (as shown in Figure 2).The bottom cover 14 wraps up bottom plate and the surrounding edge around base portion peripheral setting, bottom plate week Edge upwardly extends to form the surrounding edge, and 141 root edge of lower baffle plate and plate top surface are affixed, the both ends ora terminalis of lower baffle plate 141 respectively with Surrounding edge is affixed.The projection matching of surrounding edge and mounting groove notch in the horizontal plane is overlapped, and overhead gage 111 and lower baffle plate 141 are in level Projection matching on face is overlapped.When lid 2 closes on the pedestal 11 bottom cover 14 from bottom to top, the apical margin of surrounding edge and the notch of mounting groove Matching fitting, the root edge of overhead gage 111 are bonded with the matching of the apical margin of lower baffle plate 141, and with this be enclosed it is mutual be independent every Hot chamber 15 and heat dissipation cavity 16 effectively prevent the heat in heat dissipation cavity 16 to transmit to heat-insulation chamber 15, it is ensured that wiring board 12 can be suitable Environment temperature under work.In addition, the overhead gage 111 and pedestal 11 are made of integral type, the lower baffle plate 141 and bottom cover 14 Be made of integral type, and be it is hydrophobic, insulation plastic part, when baking machine for a long time in the environment of sultry humidity in use, on Baffle 111 and lower baffle will not absorb the moisture in environment, and wiring board 12 is effectively prevent to have the component of conductive characteristic because contacting And there is the situation of short circuit, it is ensured that the service life of wiring board 12.

In the present embodiment, the top surface front of the pedestal 11 is control panel, and the heavy platform, institute is arranged in the rear portion of top surface It states mounting groove front to be located at below the control panel, rear portion is located at below heavy platform.Vertically coming into operation for the overhead gage 111 is located at Between the control panel and heavy platform, so that the heat that heater 13 generates can only be transferred to heat dissipation cavity 16 by heavy platform bottom surface It is interior, play the role of obstructing heat transfer between heater 13 and wiring board 12.

In the present embodiment, the root edge of the overhead gage 111 is lower than 12 bottom surface of wiring board.111 bottom of overhead gage 141 apical margin outline of edge profile and lower baffle plate, after the two, which contradicts, docks, there are assembly between overhead gage 111 and lower baffle plate 141 Gap, the heat in heat dissipation cavity 16 can form the hot-fluid for entering heat-insulation chamber 15 by fit-up gap, so, wiring board 12 is consolidated It connects on the roof of heat-insulation chamber 15, both facilitates and connect with control panel, the hot-fluid for also effectively avoiding and passing through fit-up gap is direct Contact increases sink flow distance by extending at a distance from fit-up gap, increases the thermal losses of hot-fluid, and then play guarantor Protect the effect of wiring board 12.

In the present embodiment, 14 rear portion of bottom cover forms the bottom wall of the heat dissipation cavity 16, opened up on the bottom wall with outside The heat release hole 142 that boundary leads to, the heat release hole 142 are arranged towards baking tray 3.142 both ends of heat release hole respectively with free surrounding space and dissipate Hot chamber 16 leads to, and the heat in heat dissipation cavity 16 passes through 142 outlet of heat release hole.The heat release hole 142 is provided with the rear portion of bottom cover 14, And the axis of heat release hole 142 be it is angularly disposed, the upper port making a pilgrimage to a temple on a mountain heavy platform bottom surface of heat release hole 142 is arranged, and lower port is oblique to be divided into It sets, is provided for heat outlet and distribute space, effectively improve radiating efficiency.

In the present embodiment, the wiring board 12 is equipped with key 121, and 11 top surface front of pedestal is equipped with perforation 17, described 11 top surface front of pedestal is covered with pad pasting 18, and perforation 17 is passed through at the top of key 121 and contradicts the perforation on 18 bottom surface of pad pasting 17 upper port peripheral indentations form annular groove 19.17 pairs of keys 121 of perforating play guiding function, 121 lower end of key and route Plate 12 connects, and upper end passes through perforation 17 and contradicts on the bottom surface of pad pasting 18.When in use, user presses pad pasting by finger 18 specific region, active force can be transmitted downwards and drive 121 vertical motion of key by pad pasting 18, and be triggered on wiring board 12 Corresponding function.Since the diameter of key 121 is smaller, the finger of user can not be inserted into perforation 17, so, key 121 erects Difference in height between 17 upper ports of 121 top surface of key when referring to stroke in non-pressing state and perforation, by opening up annular Groove 19 come reduce perforation 17 upper ports height, and then play the role of increase the vertical stroke of key 121.

In the present embodiment, the depth of the annular groove 19 is that I=0.8mm(is as shown in Figure 3), both by increasing key 121 vertical strokes promote usage experience, moreover it is possible to avoid the structural strength to 17 peripheries of perforation from having an impact, and can effectively resist Pressing active force from user's finger, it is ensured that 11 service life of pedestal.19 external profile diameter of annular groove is H=14mm, Both ensured that user's finger can protrude into annular groove 19 and contradict with 17 upper ports of perforation, moreover it is possible to avoid the knot to 17 peripheries of perforation Structure intensity has an impact, and can effectively resist the pressing active force from user's finger.

In the present embodiment, the upper cover 2 includes lid 21 and trim 22(as shown in Figure 4), 22 bottom of trim Face periphery is equipped with oblique faying surface 221 in a ring, and 21 top surface of lid is equipped with skewed horizontal load face 211 in a ring, decoration The lid of lid 22 closes above lid 21, so that oblique faying surface 221 contradicts on skewed horizontal load face 211.The skewed horizontal load face 211 The injecting glue slot 212 of annular is equipped on the inside of inner edge, the top surface of trim 22 has decorative pattern.During installation, into injecting glue slot 212 Glue is perfused, trim 22 is sticked on lid 21 by glue, and makes oblique faying surface 221 and skewed horizontal load face 211 right It should be arranged.When using baking machine, lid 21 and the meeting expanded by heating of trim 22, when the swell increment of trim 22 is greater than lid 21 Swell increment when, the oblique faying surface 221 on trim 22 can contradict on the skewed horizontal load face 211 of lid 21, oblique overlap joint Face 221 applies horizontal direction active force to skewed horizontal load face 211, and skewed horizontal load face 211 applies vertical effect to oblique faying surface 221 The trim 22 of power, horizontal direction expansion deformation gets rid of the constraint in skewed horizontal load face 211 by being lifted, and effectively prevent trim 22 There is a situation where rupture due to deformation is hampered, it is ensured that 2 service life of upper cover.

In the present embodiment, 212 inner edge of injecting glue slot, which extends radially inwardly to be formed, leads glue groove 213, described to lead glue groove 213 Inner end bottom surface opens up the gas vent 214 of perforation, and the outer rim of 212 bottom surface of injecting glue slot is arranged higher than inner edge.Lead glue groove 213 be for The six roots of sensation, and scattering device encloses in region (as shown in Figure 5) in injecting glue slot 212, respectively lead the outer end of glue groove 213 with injecting glue slot 212 lead to.When glue expanded by heating, glue can be flowed from 212 outer rim of injecting glue slot to inner edge, and entered and led glue groove 213, lead glue Air is discharged by gas vent 214 in slot 213, has both ensured that trim 22 will not be lifted because glue expands, it is ensured that glue is not It can be excessive to baking machine surface, it is ensured that baking machine aesthetics.

In the present embodiment, as shown in fig. 6, being reserved with gap between the oblique faying surface 221 and skewed horizontal load face 211, The width in the gap is A=0.5mm, both reserves deformation space for trim 22, moreover it is possible to ensure that gap foot is smaller, will not influence Baking machine appearance.The width of the oblique faying surface 221 is B=1.7mm, is both improved the standard by increasing oblique faying surface 221 To the stability converted between active force and vertical active force, moreover it is possible to which the effectively thickness of control trim 22 reduces raw material usage amount.

In the present embodiment, the outer rim in the skewed horizontal load face 211 is arranged higher than inner edge, the skewed horizontal load face 211 with Angle between 21 top surface of lid is R=135 °, and skewed horizontal load face 211 can play horizontal direction position-limiting action to trim 22, moreover it is possible to The horizontal applied force of self-chambering in future decorative cover 22 is efficiently converted into vertical active force, so that oblique faying surface 221 is lifted and obtains foot Enough expansion spaces.

It is to be appreciated that parameter I can also be 0.5mm, 0.6 mm, 0.7 mm, 0.9 mm, 1 mm etc., as long as meeting 0.5mm≤I≤1mm requirement.

It is to be appreciated that parameter H can also be 13 mm, 15 mm, 16 mm etc., wanted as long as meeting 13mm≤H≤16mm It asks.

It is to be appreciated that the quantity for leading glue groove 213 can also be two, three, four, five etc., as long as leading glue groove 213 Scattering device and lead to 212 inner edge of injecting glue slot, is regarded as specific embodiment of the utility model.

It is to be appreciated that parameter A can also be for 0.1 mm, 0.3 mm, 0.4 mm, 0.6 mm, 0.7 mm, 1 mm etc., only Meet 0.1mm≤A≤1mm requirement.

It is to be appreciated that parameter B can also for 1.4 mm, 1.6 mm, 1.8 mm, 2.1 mm etc., as long as meet 1.4mm≤ The requirement of B≤2.1mm.

It is to be appreciated that parameter R can also be 100 °, 120 °, 130 °, 140 °, 160 °, 170 ° etc., as long as meeting 100 ° The requirement of≤R≤170 °.

Claims (10)

1. a kind of baking machine with long service life, including ontology and upper cover, ontology includes pedestal, the route for being mounted on pedestal front Plate, the baking tray for being mounted on base top surface, the heater being mounted below baking tray and the bottom cover being mounted below pedestal, bottom cover with Pedestal is enclosed the cavity of installation wiring board, which is characterized in that the base end face is equipped with overhead gage, and the bottom cover top surface is set There is lower baffle plate, the overhead gage is vertically docked with lower baffle plate, and cavity is separated to form and is mutually independent heat-insulation chamber and heat dissipation cavity, The wiring board is mounted in heat-insulation chamber, and the heat dissipation cavity is between the heat-insulation chamber and baking tray.

2. a kind of baking machine with long service life according to claim 1, which is characterized in that the root edge of the overhead gage is low In the wiring board bottom surface.

3. a kind of baking machine with long service life according to claim 1, which is characterized in that the base end face is to downward It stretches to form the overhead gage, the bottom cover top surface upwardly extends to form the lower baffle plate, and the overhead gage and lower baffle plate are in level Projection in face is overlapped.

4. a kind of baking machine with long service life according to claim 1, which is characterized in that the bottom cover rear portion forms institute The bottom wall of heat dissipation cavity is stated, opens up on the bottom wall and is arranged with the extraneous heat release hole led to, the heat release hole towards baking tray.

5. a kind of baking machine with long service life according to claim 1, which is characterized in that the wiring board is equipped with and presses Key, base top surface front are equipped with perforation, and the base top surface front is covered with pad pasting, and key-top passes through perforation and contradicts and pasting On film bottom surface, the perforation upper port peripheral indentation forms annular groove.

6. a kind of baking machine with long service life according to claim 5, which is characterized in that the depth of the annular groove For I, 0.5mm≤I≤1mm, the annular groove external profile diameter is H, 13mm≤H≤16mm.

7. -6 any a kind of baking machine with long service life according to claim 1, which is characterized in that the upper cover includes Lid and trim, trim bottom surface periphery are equipped with oblique faying surface in a ring, and the lid top surface is equipped in a ring Skewed horizontal load face, trim lid close above lid so that oblique faying surface contradict on skewed horizontal load face.

8. a kind of baking machine with long service life according to claim 7, which is characterized in that the oblique faying surface and tiltedly To gap is reserved between supporting surface, the width in the gap is A, 0.1mm≤A≤1mm；Alternatively, the width of the oblique faying surface Degree is B, 1.4mm≤B≤2.1mm.

9. a kind of baking machine with long service life according to claim 7, which is characterized in that outside the skewed horizontal load face Edge is arranged higher than inner edge, and the angle between the skewed horizontal load face and lid top surface is R, and 100 °≤R≤170 °.

10. a kind of baking machine with long service life according to claim 7, which is characterized in that in the skewed horizontal load face The injecting glue slot of annular is equipped on the inside of edge, injecting glue slot inner edge, which extends radially inwardly to be formed, leads glue groove, described to lead glue groove inner end bottom Face opens up the gas vent of perforation, and the outer rim of the injecting glue groove bottom is arranged higher than inner edge.