CN110301834B - Air duct system of cooking electric appliance - Google Patents
Air duct system of cooking electric appliance Download PDFInfo
- Publication number
- CN110301834B CN110301834B CN201910690122.0A CN201910690122A CN110301834B CN 110301834 B CN110301834 B CN 110301834B CN 201910690122 A CN201910690122 A CN 201910690122A CN 110301834 B CN110301834 B CN 110301834B
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- China
- Prior art keywords
- air
- channel
- cavity
- exhaust
- air inlet
- Prior art date
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Links
- 238000010411 cooking Methods 0.000 title claims abstract description 54
- 239000000779 smoke Substances 0.000 claims abstract description 80
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 38
- 239000003546 flue gas Substances 0.000 claims description 38
- 230000017525 heat dissipation Effects 0.000 claims description 12
- 238000002955 isolation Methods 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000006698 induction Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 11
- 230000000994 depressogenic effect Effects 0.000 description 10
- 238000007599 discharging Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 235000021168 barbecue Nutrition 0.000 description 3
- 239000003517 fume Substances 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 206010053615 Thermal burn Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009246 food effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J37/00—Baking; Roasting; Grilling; Frying
- A47J37/06—Roasters; Grills; Sandwich grills
- A47J37/0623—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity
- A47J37/0629—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity with electric heating elements
- A47J37/0641—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity with electric heating elements with forced air circulation, e.g. air fryers
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J37/00—Baking; Roasting; Grilling; Frying
- A47J37/06—Roasters; Grills; Sandwich grills
- A47J37/0623—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity
- A47J37/0664—Accessories
Abstract
The utility model provides a cooking appliance's air duct system, cooking appliance includes box and shell thereof, the cavity of setting in the shell, the cavity is equipped with the cavity roof, be equipped with exhaust assembly between box and the cavity roof, the cavity rear portion is equipped with power and power fixed plate, power and power fixed plate fixed connection, still including setting up the air outlet with box outside intercommunication on cooking appliance, be equipped with more than one wind channel in the exhaust assembly, be equipped with exhaust fan in the wind channel of exhaust assembly, exhaust assembly's wind channel and air outlet intercommunication, exhaust assembly is equipped with the power induction port. The exhaust component of the cooking appliance is internally provided with the exhaust channel and the air collecting channel from top to bottom, the air collecting channel is provided with the cold air inlet, and the power hot air and/or the cavity oil smoke are mixed with external cold air in the air collecting channel before being discharged, so that the temperature of the discharged power hot air and/or the cavity oil smoke is reduced.
Description
Technical Field
The invention relates to a cooking appliance, in particular to an air duct system of the cooking appliance, which is mainly applied to the cooking appliance with steaming and baking or steaming and baking microwaves.
Background
The electric oven in the market at present usually adopts the heating tube to produce high temperature heat and barbecue food, and the heating tube during operation can make electric oven be in the high temperature state, under the effect of heat transfer, and continuous high temperature can produce the influence to the performance and the life-span of electronic components such as power, hot-blast motor.
In addition, a large amount of oil smoke is generated in the electric oven cavity in the process of roasting food, and the oil smoke needs to be timely discharged outside the oven cavity. The oil smoke generated by the traditional electric oven is directly discharged out of the oven body by the fan, the temperature of the oil smoke discharged out of the oven body is higher, and when a user contacts the discharged oil smoke, the user generates discomfort; and the fan blows the fume exhausted from the fume outlet of the cavity to the outside of the box body directly, and cold air blown out by the fan is easy to pour into the cavity, so that heat loss in the cavity is caused, the energy efficiency of the oven is reduced, and the roasting effect of food is influenced. In addition, in the barbecue process, a large amount of heat can be transferred to the door body, so that the door body is scalded, and a user is easy to scald.
Some ovens on the market generally pump cool air from outside into the oven body, and the cool air is exhausted outside the oven body after passing through each heating device, so that the temperature of the exhausted air is high, and when a user contacts the high-temperature air, discomfort is caused.
Therefore, further improvements are needed.
Disclosure of Invention
The invention aims to provide an air duct system of a cooking appliance, which has excellent air duct structure, ensures the energy efficiency of an oven and lower exhaust temperature, effectively solves the problem that high-temperature smoke is exhausted from the cooking appliance, and improves the performance of the cooking appliance, so as to overcome the defects in the prior art.
The air duct system of the cooking appliance designed according to the purpose comprises a box body, a shell of the box body, a cavity arranged in the shell, a cavity top wall arranged in the cavity, an exhaust assembly arranged between the box body and the cavity top wall, a power supply and a power supply fixing plate arranged at the rear side of the cavity, and an air outlet which is arranged on the cooking appliance and communicated with the outside of the box body, wherein more than one air duct is arranged in the exhaust assembly, an exhaust fan is arranged in the air duct of the exhaust assembly, the air duct of the exhaust assembly is communicated with the air outlet, a power supply air suction port is arranged in the exhaust assembly, the air duct of the exhaust assembly is communicated with the power supply air suction port, a cold air inlet used for introducing external air is also arranged in the exhaust assembly, and the cold air inlet is communicated with the air duct of the exhaust assembly; wherein, the top end of the power supply and the top end of the power supply fixing plate are respectively close to or close to the power supply air suction port; the box body is provided with a first air inlet hole, the power supply air suction port, the air channel of the exhaust assembly and the air outlet are sequentially communicated to form a first power supply heat dissipation channel, so that cold air outside the box body enters the box body through the first air inlet hole, and the cold air sequentially passes through the power supply, the power supply air suction port and enters the air channel of the exhaust assembly; in addition, external cold air enters the air channel of the exhaust assembly through the cold air inlet, so that the external cold air is mixed with power hot air in the air channel of the exhaust assembly, and the mixed gas is discharged out of the box body through the exhaust fan and the air outlet. When the power hot air is discharged, the external air and the power hot air are mixed, so that the temperature of the power hot air is effectively reduced, and the power hot air is prevented from being too high when being discharged out of the box body.
An exhaust channel and an air collecting channel are arranged in the exhaust assembly from top to bottom, the exhaust channel is communicated with an air outlet, an exhaust fan is arranged in the exhaust channel, the exhaust fan is provided with a lower air inlet, the top of the exhaust fan is provided with an upper air inlet, the exhaust channel and the air collecting channel are respectively communicated with the lower air inlet, the lower air inlet is communicated with the air outlet through the air collecting channel, the air collecting channel is communicated with the exhaust channel through the lower air inlet, and the air collecting channel is provided with more than one cold air inlet; the air collecting channel is communicated with the air suction port of the power supply so that hot air sucked by the power supply and external cold air are mixed in the air collecting channel.
One side of the power supply fixing plate is provided with a vertical wind shielding wall. The power and the power fixed plate are close to the hot air assembly, a vertical wind shielding wall is arranged on one side of the power fixed plate, heat of the cavity can be prevented from being transferred to the power, cold air in the box body is convenient to enter and is centralized to blow the power, and the cold air is not easy to diffuse after entering the box body from the first air inlet hole.
The air duct system of the cooking appliance further comprises a second air inlet hole arranged below the power supply, wherein the second air inlet hole is communicated with the bottom space of the cavity, and the bottom space of the cavity is communicated with the outside of the box body; the cooking appliance further comprises a door body connected with the box body, a third air inlet hole is formed in the bottom end of the door body, a first air outlet hole is formed in the rear side wall of the lower portion of the door body, a cavity front plate is arranged on the front side of the cavity, and a fourth air inlet hole communicated with the first air outlet hole is formed in the lower portion of the cavity front plate; the bottom of the box body is provided with a bottom air inlet channel communicated with the second air inlet hole; the third air inlet hole, the first air outlet hole, the fourth air inlet hole, the bottom air inlet channel, the second air inlet hole, the power supply air suction port, the air channel of the exhaust assembly and the air outlet are sequentially communicated to form a second power supply heat dissipation channel; so that part of cold air entering the door body enters the box body through the bottom air inlet channel and the second air inlet hole, and the part of cold air sequentially enters the air channel of the exhaust assembly through the power supply and the power supply air suction port and is discharged out of the box body through the exhaust fan and the air outlet.
The cooking appliance further comprises a door body, a control panel positioned above the door body, a cavity front plate positioned at the front side of the cavity 2, wherein the door body and the control panel are arranged between the upper part and the lower part, and an air outlet is arranged on the cavity front plate and positioned between the door body and the control panel; the door body is a hollow body, a door body air inlet channel is formed in the door body, a third air inlet hole is formed in the bottom end of the door body, a second air outlet hole facing the rear of the box body is formed in the top of the door body, a fifth air inlet hole communicated with the second air outlet hole is formed in the front plate of the cavity body, the air channel of the exhaust assembly is communicated with the fifth air inlet hole, and the third air inlet hole, the door body air inlet channel, the second air outlet hole, the fifth air inlet hole, the air channel of the exhaust assembly and the air outlet are sequentially communicated to form a door body heat dissipation channel; so that part of cold air entering the door body enters an air channel (exhaust air channel) of the exhaust assembly through the second air outlet hole and the fifth air inlet hole, and then is discharged out of the box body through the exhaust fan and the air outlet. The temperature of the door body which is heated when the cooking electric appliance works is reduced.
The top wall of the cavity is provided with a smoke discharge pipe communicated with the cavity, one end of the smoke discharge pipe is communicated with an air channel of the exhaust assembly, and the air channel of the exhaust assembly is communicated with the cavity through the smoke discharge pipe to form a smoke discharge channel; the exhaust assembly comprises an exhaust hood, an upper air guide hood and a lower air guide hood from top to bottom; the gap between the exhaust hood and the upper air guide hood forms an exhaust channel; the gap between the upper air guide cover and the lower air guide cover forms an air collecting channel, a smoke guide cover is arranged between the exhaust cover and the upper air guide cover, the smoke guide cover is transversely arranged, the smoke guide cover is provided with an air inlet guide opening and an air outlet guide opening, the air inlet guide opening is communicated with a smoke discharge pipe, the smoke guide cover is positioned in the air exhaust channel, and the air outlet guide opening is communicated with the air collecting channel; the oil smoke in the cavity is discharged out of the box body through the smoke discharge pipe, the smoke guide cover, the air collecting channel, the exhaust fan, the exhaust channel and the air outlet; the air outlet diversion port is obliquely oriented or is opposite to the lower air guide cover; the air collecting channel is provided with more than one cold air inlet, and the air collecting channel is communicated with the power supply air suction port so that the cavity oil smoke, the hot air sucked from the power supply and the external cold air are mixed in the air collecting channel. Because the mixed gas comprises external cold air, the temperature of the cavity oil smoke and the power hot air can be effectively reduced, so that the temperature of air discharged outside the box body is lower, and discomfort to a user is avoided. In addition, the upper end of the vertical smoke discharge pipe is connected with the transverse smoke guide cover, so that a smoke discharge path turns, excessive loss of heat in the cavity can be prevented, and the energy efficiency of the oven is improved; on the one hand, the moisture in the flue gas easily forms condensed water on the flue gas guide cover and flows back into the cavity, so that water is not easy to accumulate in the air collecting channel, and corrosion to related devices is reduced. On the other hand, the flue gas guide cover is arranged in the exhaust channel, the temperature of the air blown out from the exhaust channel is lower than the temperature of the flue gas in the flue gas guide cover, and the condensation of the moisture in the flue gas guide cover is facilitated, so that the water flows back into the cavity, and the device is compact in structure and saves the installation space.
The upper gas guide cover is provided with a first smoke outlet, a sealing ring is sleeved on the periphery of the first smoke outlet, and the sealing ring is positioned in a gap between the upper gas guide cover and the smoke guide cover; a smoke discharge isolation pipe is arranged on the lower air guide cover, the smoke discharge isolation pipe is positioned in the first smoke discharge port, and the smoke discharge pipe penetrates through the smoke discharge isolation pipe; and a second flue gas outlet is also arranged at the adjacent position of the first flue gas outlet, and the first flue gas outlet and the second flue gas outlet respectively correspond to an air inlet guide port and an air outlet guide port of the flue gas guide cover.
The shell includes the back shroud, and the back shroud is equipped with the boss that stretches to the protruding of box afterbody direction, and the boss covers the power fixed plate at least, and boss lower extreme, power fixed plate lower extreme all set up with the box bottom interval, and the downside of boss corresponds the position of the lower extreme of power fixed plate and is equipped with first fresh air inlet. The boss is close to or spaced from the wall surface of the user cabinet, the lower end of the boss and the bottom end of the box body are spaced, and the first air inlet hole is arranged below the boss and is in effective contact with the outside air, so that the air inlet of the first air inlet hole is smooth.
The tail part of the cavity is provided with a hot air component, the hot air component comprises a hot air motor and a hot air fan which are connected, the cavity is provided with a cavity back wall, the rear part of the cavity back wall is provided with a motor fixing plate, the hot air motor is fixed at the rear part of the motor fixing plate, a motor heat shield is also arranged between the motor fixing plate and the cavity back wall, the motor heat shield is aligned with the hot air motor, and the power supply fixing plate is fixed on the motor fixing plate; the position that is located hot-blast motor below of motor fixed plate is equipped with towards the sunken depressed part of cavity direction, and the depressed part is equipped with the second fresh air inlet that runs through from beginning to end, and the box still includes the base, and the tail end of base is equipped with the base back turn-ups of turning up, and the position that the depressed part downside corresponds the base back turn-ups is equipped with the connection convex closure, and the connection convex closure of depressed part links to each other with the base back turn-ups to make the base back turn-ups and the depressed part each other set up for the interval, and form clearance L between the two. The base back flanging and the concave part can be firmly connected through the connecting convex hulls, and a concave space with a larger space can be formed, so that wind fed by the second air inlet hole can smoothly flow to the power supply to dissipate heat of the power supply.
The hot air assembly further comprises a heating tube, the heating tube and a hot air fan are positioned in front of the rear wall of the cavity, the hot air motor is positioned behind the rear wall of the cavity, and the hot air fan blows heat emitted by the heating tube into the cavity and drives hot air in the cavity to flow. The motor fixing plate and the motor heat shield are arranged, and the power supply fixing plate is fixed on the motor fixing plate, so that heat of the cavity can be effectively prevented from being transferred to the hot air motor and the power supply.
The cooking appliance is at least an embedded drawer oven, the oven is provided with a drawer, the front end of the drawer is provided with a door body, and the drawer is movably connected with the oven body through a sliding rail. The cooking appliance also comprises an electric oven with a steam function or a microwave steam barbecue integrated machine.
The beneficial effects of the invention are as follows:
a. the flue gas generated by the cooking appliance during working is not directly discharged to the outside of the box body, but the flue gas discharging path turns through being connected with the transverse flue gas guiding cover, so that the heat in the cavity of the cooking appliance can be effectively prevented from being lost rapidly, and the energy efficiency of the cooking appliance is improved;
b. after cold air enters the box body and passes through the heating power supply, the cold air forms power supply hot air, and the power supply hot air is not directly discharged to the outside of the box body, so that the discomfort of a human body caused by the discharge of the power supply hot air with overhigh temperature is prevented.
c. The flue gas and/or the hot air of the power supply are mixed with the external cold air, so that the temperature of the air discharged out of the box body is greatly reduced, and the discomfort of a human body caused by the fact that the hot air with too high temperature is blown out of the air outlet of the cooking appliance is effectively avoided.
Drawings
Fig. 1 is an exploded view of a cooking appliance according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a detachable back cover plate of a cooking appliance according to an embodiment of the invention.
Fig. 3 is a schematic structural view of an embedded drawer oven of a cooking appliance according to an embodiment of the present invention.
Fig. 4 is an enlarged view at a in fig. 3.
Fig. 5 is a schematic view illustrating another azimuth structure of an embedded drawer oven of a cooking appliance according to an embodiment of the present invention.
Fig. 6 is an enlarged view at B in fig. 5.
Fig. 7 is a schematic plan view (top view position) of a cooking apparatus according to an embodiment of the present invention.
FIG. 8 is a schematic view of the cross-sectional structure of C-C in FIG. 7.
Fig. 9 is an enlarged view of D in fig. 8.
Fig. 10 is an enlarged view at E in fig. 8.
Fig. 11 is a schematic structural view of a cooking appliance with a first power heat dissipation channel formed therein according to an embodiment of the present invention.
Fig. 12 is a schematic structural view of a cooking appliance with a second power heat dissipation channel formed therein according to an embodiment of the present invention.
Fig. 13 is a schematic view of a cooking appliance according to an embodiment of the present invention, in which a cooking fume exhaust path is formed.
Fig. 14 is an enlarged view of F in fig. 13.
Fig. 15 is an enlarged view at G in fig. 13.
Fig. 16 is a schematic structural view of a door heat dissipation channel formed in a cooking appliance according to an embodiment of the present invention.
Fig. 17 is a schematic diagram showing an exploded structure of a power source, a power source fixing plate and a cavity of a cooking appliance according to an embodiment of the present invention.
Fig. 18 is an enlarged view of H in fig. 17.
Fig. 19 is an exploded view of an exhaust assembly of a cooking appliance according to an embodiment of the present invention.
FIG. 20 is a schematic view of a smoke guiding hood according to an embodiment of the invention.
In the figure, 1 is a box body, 1.1 is a rear cover plate, 1.2 is a first air inlet hole, 1.3 is a boss, 1.4 is a base, 1.5 is a base rear flanging, 1.6 is a bottom air inlet channel, 1.7 is a shell, 2 is a cavity, 2.1 is a cavity top wall, 2.2 is a flue gas discharge pipe, 2.3 is a cavity front plate, 2.4 is a fourth air inlet hole, 2.5 is a fifth air inlet hole, 2.6 is a cavity rear wall, 3 is an exhaust assembly, 3.1 is a power supply air suction port, 3.2 is an exhaust fan, 3.2.1 is a lower air inlet, 3.2.2 is an upper air inlet, 3.3 is an exhaust hood, 3.4 is an upper air guide hood, 3.4.1 is a first flue gas discharge port, 3.4.2 is a sealing ring, 3.4.3 is a second flue gas discharge port, 3.5 is a lower air guide hood, 3.5.1 is a flue gas discharge isolation pipe, 3.6 is a flue gas guide cover, 3.7 is an air inlet guide opening, 3.8 is an air outlet guide opening, 3.9 is a cold air inlet, 4 is a power supply, 5 is a power supply fixing plate, 5.1 is a wind shielding wall, 6 is a hot air motor, 7 is a motor fixing plate, 7.1 is a concave part, 7.2 is a second air inlet hole, 7.3 is a connecting convex hull, 8 is a motor heat insulation cover, 9 is a door body, 9.1 is a door body air inlet channel, 9.2 is a first air outlet hole, 9.3 is a second air outlet hole, 9.4 is a third air inlet hole, 10 is a control panel, 11 is an air outlet, 12 is an air outlet channel, 13 is an air collecting channel, 14 is a drawer, 15 is a sliding rail, 16 and 17 is a heating pipe.
Detailed Description
The invention is further described below with reference to the drawings and examples.
Referring to fig. 1-11, an air duct system of a cooking appliance comprises a box body 1, a shell 1.7 of the box body, a cavity 2 arranged in the shell 1.7, a cavity top wall 2.1 arranged in the cavity 2, an exhaust component 3 arranged between the box body 1 and the cavity top wall 2.1, a power supply 4 and a power supply fixing plate 5 arranged at the rear side of the cavity 2, the power supply 4 and the power supply fixing plate 5 fixedly connected, an air outlet 11 arranged on the cooking appliance and communicated with the outside of the box body 1, more than one air duct arranged in the exhaust component 3, an exhaust fan 3.2 arranged in the air duct of the exhaust component 3, the air duct of the exhaust component 3 communicated with the air outlet 11, a power supply air suction port 3.1 arranged in the exhaust component 3, an air duct of the exhaust component 3 communicated with the power supply 3.1, a cold air inlet 3.9 for introducing outside air, and the cold air inlet 3.9 communicated with the air duct of the exhaust component 3; wherein, the top end of the power supply 4 and the top end of the power supply fixing plate 5 are respectively close to or close to the power supply air suction port 3.1, and cold air entering the box body 1 forms power supply hot air through the power supply 4 and then enters an air flue of the exhaust assembly 3 through the power supply air suction port 3.1; the box body 1 is provided with a first air inlet hole 1.2, the power supply air suction port 3.1, the air channel of the exhaust component 3 and the air outlet 11 are sequentially communicated to form a first power supply heat dissipation channel, so that cold air outside the box body 1 enters the box body 1 through the first air inlet hole 1.2, and the cold air sequentially passes through the power supply 4, the power supply air suction port 3.1 and enters the air channel of the exhaust component 3; in addition, external cold air enters the air flue of the exhaust assembly 3 through the cold air inlet 3.9 so as to mix the external cold air with power hot air in the air flue of the exhaust assembly 3, and the mixed gas is discharged out of the box body 1 through the exhaust fan 3.2 and the air outlet 11. The exhaust fan 3.2 is a swirl fan.
When the box body 1 discharges power hot air, the power hot air enters the air collecting channel 13 of the air discharging component 3 from the cold air inlet 3.9 before entering the air discharging channel 12 of the air discharging component 3, the power hot air is mixed in the air collecting channel 13 by the external cold air, and the mixed gas enters the air discharging channel 12 through the air discharging fan 3.2, so that the temperature of the power hot air is effectively reduced, and the power hot air with lower temperature discharged by the box body 1 is further caused.
The cooking appliance is at least an embedded drawer oven, the oven is provided with a drawer 14, the front end of the drawer 14 is provided with a door body 9, and the drawer 14 is movably connected with the oven body 1 through a sliding rail 15.
An exhaust channel 12 and an air collecting channel 13 are arranged in the exhaust assembly 3 from top to bottom, the exhaust channel 12 is communicated with an air outlet 11, an exhaust fan 3.2 is arranged in the exhaust channel 12, a lower air inlet 3.2.1 is arranged on the exhaust fan 3.2, an upper air inlet 3.2.2 is arranged on the top of the exhaust fan 3.2, the exhaust channel 12 and the air collecting channel 13 are respectively communicated with the lower air inlet 3.2.1, the lower air inlet 3.2.1 is communicated with the air outlet 11 through the air collecting channel 13, the air collecting channel 13 is communicated with the exhaust channel 12 through the lower air inlet 3.2.1, and the air collecting channel 13 is provided with more than one cold air inlet 3.9; the air collecting channel 13 is communicated with the power supply air suction port 3.1 so that hot air sucked by the power supply and external cold air are mixed in the air collecting channel 13.
Referring to fig. 2-4, the housing 1.7 includes a back cover plate 1.1, the back cover plate 1.1 is provided with a boss 1.3 protruding towards the tail direction of the box body 1, the boss 1.3 at least covers the power fixing plate 5, the lower end of the boss 1.3, the lower end of the power supply 4 and the lower end of the power fixing plate 5 are all arranged at intervals with the bottom end of the box body 1, and a first air inlet hole 1.2 is arranged at the lower side of the boss 1.3 corresponding to the lower end of the power fixing plate 5.
The boss 1.3 is closely adjacent to or spaced from the wall surface of the user cabinet, the lower end of the boss 1.3 is spaced from the bottom end of the box body 1, and the first air inlet hole 1.2 is arranged below the boss 1.3, and the first air inlet hole 1.2 is effectively contacted with the outside air, so that the air inlet smoothness of the first air inlet hole 1.2 can be ensured.
One side of the power supply fixing plate 5 is provided with a vertical wind shielding wall 5.1. The power supply 4 and the power supply fixing plate 5 are close to the hot air assembly, and the vertical wind shielding wall 5.1 is arranged on one side of the power supply fixing plate 5, so that heat transfer of the cavity 2 to the power supply 4 can be prevented, cold air which enters the box body 1 is convenient to intensively blow the power supply 4, and the cold air is not easy to diffuse after entering the box body 1 from the first air inlet hole 1.2.
Referring to fig. 12, the air duct system of the cooking appliance further comprises a second air inlet 7.2 arranged below the power supply 4, wherein the second air inlet 7.2 is communicated with the bottom space of the cavity 2, and the bottom space of the cavity 2 is communicated with the outside of the box 1; the cooking appliance further comprises a door body 9 connected with the box body 1, a third air inlet hole 9.4 is formed in the bottom end of the door body 9, a first air outlet hole 9.2 is formed in the rear side wall of the lower portion of the door body 9, a cavity front plate 2.3 is arranged on the front side of the cavity 2, and a fourth air inlet hole 2.4 communicated with the first air outlet hole 9.2 is formed in the lower portion of the cavity front plate 2.3; the bottom of the box body 1 is provided with a bottom air inlet duct 1.6 communicated with a second air inlet hole 7.2; the third air inlet hole 9.4, the first air outlet hole 9.2, the fourth air inlet hole 2.4, the bottom air inlet channel 1.6, the second air inlet hole 7.2, the power supply air suction port 3.1, the air channel of the exhaust component 3 and the air outlet 11 are sequentially communicated to form a second power supply heat dissipation channel; so that part of cold air entering the door body 9 enters the box body 1 through the bottom air inlet channel 1.6 and the second air inlet hole 7.2, and the part of cold air sequentially enters the air channel of the exhaust assembly 3 through the power supply 4 and the power supply air suction port 3.1, and is discharged out of the box body 1 through the exhaust fan 3.2 and the air outlet 11. A part of the cold air flowing into the door body 9 flows as indicated by arrows in fig. 12.
Referring to fig. 13-20, the top wall 2.1 of the cavity is provided with a flue gas discharge pipe 2.2 communicated with the cavity 2, one end of the flue gas discharge pipe 2.2 is communicated with an air channel of the exhaust assembly 3, and the air channel of the exhaust assembly 3 is communicated with the cavity 2 through the flue gas discharge pipe 2.2 to form a flue gas discharge channel. The direction of the soot in the cavity 2 is shown by the arrow in fig. 13.
The exhaust assembly 3 comprises an exhaust hood 3.3, an upper air guide hood 3.4 and a lower air guide hood 3.5 from top to bottom; the gap between the exhaust hood 3.3 and the upper air guide hood 3.4 forms an exhaust passage 12; the gap between the upper air guide cover 3.4 and the lower air guide cover 3.5 forms an air collecting channel 13, a smoke guide cover 3.6 is arranged between the exhaust cover 3.3 and the upper air guide cover 3.4, the smoke guide cover 3.6 is transversely arranged, the smoke guide cover 3.6 is provided with an air inlet guide opening 3.7 and an air outlet guide opening 3.8, the air inlet guide opening 3.7 is communicated with a smoke discharge pipe 2.2, the smoke guide cover 3.6 is positioned in an air exhaust channel 12, and the air outlet guide opening 3.8 is communicated with the air collecting channel 13; the oil smoke in the cavity 2 is discharged out of the box body 1 through the smoke discharge pipe 2.2, the smoke guide cover 3.6, the air collecting channel 13, the exhaust fan 3.2, the exhaust channel 13 and the air outlet 11; the air outlet diversion port 3.8 is obliquely oriented or opposite to the lower air guide cover 3.5; the air collecting channel 13 is provided with more than one cold air inlet 3.9, and the air collecting channel 13 is communicated with the power supply air suction port 3.1, so that the cavity oil smoke, the hot air sucked from the power supply and the external cold air are mixed in the air collecting channel 13.
Because the mixed gas comprises external cold air, the temperature of the cavity oil smoke and the power hot air can be effectively reduced, so that the temperature of air discharged outside the box body 1 is lower, and discomfort to a user is avoided. In addition, the upper end of the vertical smoke discharge pipe 2.2 is connected with the transverse smoke guide cover 3.6, so that the smoke discharge path turns, excessive loss of heat in the cavity 2 can be prevented, and the energy efficiency of the oven is improved; on the one hand, the moisture in the flue gas easily forms condensed water on the flue gas guide cover 3.6 and flows back to the cavity 2, so that water is not easy to accumulate in the air collecting channel 13, and corrosion to related devices is reduced. On the other hand, the flue gas guide cover 3.3 is positioned in the exhaust channel 12, the temperature of the wind blown out from the exhaust channel 12 is lower than the temperature of the flue gas in the flue gas guide cover 3.6, and the condensation of the moisture in the flue gas guide cover 3.6 is facilitated, so that the water flows back into the cavity 2, and the device has a compact structure and saves the installation space.
The upper air guide cover 3.4 is provided with a first smoke outlet 3.4.1, a sealing ring 3.4.2 is sleeved on the periphery of the first smoke outlet 3.4.1, and a sealing ring 3.4.2 is positioned in a gap between the upper air guide cover 3.4 and the smoke guide cover 3.6; the lower air guide cover 3.5 is provided with a smoke discharge isolation pipe 3.5.1, the smoke discharge isolation pipe 3.5.1 is positioned in the first smoke discharge port 3.4.1, and the smoke discharge pipe 2.2 passes through the smoke discharge isolation pipe 3.5.1; the adjacent positions of the first smoke outlet 3.4.1 are also provided with a second smoke outlet 3.4.3, and the first smoke outlet 3.4.1 and the second smoke outlet 3.4.3 respectively correspond to an air inlet guide port 3.7 and an air outlet guide port 3.8 of the smoke guide cover 3.6.
Referring to fig. 16, the cooking appliance further includes a door body 9, a control panel 10 located above the door body 9, a cavity front plate 2.3 located at the front side of the cavity 2, the door body 9 and the control panel 10 being arranged between the top and bottom, and an air outlet 11 being arranged on the cavity front plate 2.3 and located between the door body 9 and the control panel 10; the door body 9 is a hollow body, a door body air inlet channel 9.1 is formed in the door body 9, a third air inlet hole 9.4 is formed in the bottom end of the door body 9, a second air outlet hole 9.3 facing the rear of the box body 1 is formed in the top of the door body 9, a fifth air inlet hole 2.5 communicated with the second air outlet hole 9.3 is formed in the cavity front plate 2.3, the air channel of the exhaust assembly 3 is communicated with the fifth air inlet hole 2.5, and the third air inlet hole 9.4, the door body air inlet channel 9.1, the second air outlet hole 9.3, the fifth air inlet hole 2.5, the air channel of the exhaust assembly 3 and the air outlet 11 are sequentially communicated to form a door body heat dissipation channel; so that part of cold air entering the door body 9 enters the air channel of the exhaust assembly 3 through the second air outlet hole 9.3 and the fifth air inlet hole 2.5, and is discharged out of the box body 1 through the exhaust fan 3.2 and the air outlet 11, thereby reducing the temperature of the door body 9 when the cooking electric appliance works. A part of the cold air flowing into the door body 9 flows as shown by arrows in fig. 16.
Referring to fig. 17-18, a hot air component is arranged at the tail part of the cavity 2, the hot air component comprises a hot air motor 6 and a hot air fan which are connected, the cavity 2 is provided with a cavity rear wall 2.6, a motor fixing plate 7 is arranged behind the cavity rear wall 2.6, the hot air motor 6 is fixed behind the motor fixing plate 7, a motor heat shield 8 is further arranged between the motor fixing plate 7 and the cavity rear wall 2.6, the motor heat shield 8 is aligned with the hot air motor 6, and a power supply fixing plate 5 is fixed on the motor fixing plate 7; the position of motor fixed plate 7 that is located hot-blast motor 6 below is equipped with towards the sunken depressed part 7.1 of cavity 2 direction, the second fresh air inlet 7.2 that runs through around depressed part 7.1 is equipped with, box 1 still includes base 1.4, the tail end of base 1.4 is equipped with the base back turn-ups 1.5 that upwards turns over, the position that depressed part 7.1 downside corresponds base back turn-ups 1.5 is equipped with and connects convex hull 7.3, the connection convex hull 7.3 of depressed part 7.1 links to each other with base back turn-ups 1.5 to make base back turn-ups 1.5 and depressed part 7.1 each other set up for the interval, and form clearance L between the two.
The hot air assembly further comprises a heating tube 17, the heating tube 17 and a hot air fan are positioned in front of the cavity back wall 2.6, the hot air motor 6 is positioned behind the cavity back wall 2.6, and the hot air fan blows heat emitted by the heating tube 17 into the cavity 2 and drives hot air in the cavity 2 to flow. And set up motor fixed plate 7 and motor heat exchanger 8, power fixed plate 5 is fixed on motor fixed plate 7, can prevent effectively that cavity 2 heat from transmitting to hot-blast motor 6 and power 4.
The working principle of the embodiment is as follows:
an exhaust channel and a wind collecting channel are arranged in the exhaust component of the cooking appliance from top to bottom, a cold wind inlet is arranged in the wind collecting channel, and power hot wind and/or cavity oil smoke are mixed with external cold wind in the wind collecting channel before being exhausted, so that the temperature of the exhausted power hot wind and/or cavity oil smoke is reduced.
The foregoing is a preferred embodiment of the invention showing and describing the general principles, features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments, which have been described in the foregoing description merely illustrates the principles of the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides an air duct system of cooking appliance, cooking appliance includes box (1) and shell (1.7) thereof, cavity (2) of setting in shell (1.7), cavity (2) are equipped with cavity roof (2.1), be equipped with exhaust assembly (3) between shell (1.7) and cavity roof (2.1), be equipped with power (4) and power fixed plate (5) in cavity (2) rear side, power (4) and power fixed plate (5) fixed connection, still include set up on cooking appliance with box (1) external intercommunication air outlet (11), be equipped with more than one wind channel in exhaust assembly (3), be equipped with exhaust fan (3.2) in the wind channel of exhaust assembly (3), the wind channel and air outlet (11) of exhaust assembly (3) communicate, characterized by exhaust assembly (3) are equipped with power (3.1) of communicating its wind channel, exhaust assembly (3) still are equipped with cold wind entry (3.9) of communicating its wind channel; wherein, the top end of the power supply (4) and the top end of the power supply fixing plate (5) are respectively close to or close to the power supply air suction port (3.1); the box body (1) is provided with a first air inlet hole (1.2), the power supply air suction port (3.1), the air channel of the exhaust component (3) and the air outlet (11) are sequentially communicated to form a first power supply heat dissipation channel, so that cold air outside the box body (1) enters the box body (1) through the first air inlet hole (1.2), and the cold air sequentially passes through the power supply (4) and the power supply air suction port (3.1) and enters the air channel of the exhaust component (3); in addition, external cold air enters the air flue of the exhaust assembly (3) through the cold air inlet (3.9) so as to mix the external cold air with power hot air in the air flue of the exhaust assembly (3), and the mixed gas is discharged out of the box body (1) through the exhaust fan (3.2) and the air outlet (11);
an exhaust channel (12) and an air collecting channel (13) are arranged in the exhaust assembly (3) from top to bottom, the exhaust channel (12) is communicated with an air outlet (11), an exhaust fan (3.2) is arranged in the exhaust channel (12), a lower air inlet (3.2.1) is arranged on the exhaust fan (3.2), an upper air inlet (3.2.2) is arranged on the top of the exhaust fan (3.2), the exhaust channel (12) and the air collecting channel (13) are respectively communicated with the lower air inlet (3.2.1), and the air collecting channel (13) is provided with more than one cold air inlet (3.9); the air collecting channel (13) is communicated with the power supply air suction port (3.1) so as to mix hot air sucked by the power supply and external cold air in the air collecting channel (13);
the cooking appliance further comprises a door body (9), a control panel (10) positioned above the door body (9), a cavity front plate (2.3) positioned at the front side of the cavity (2), wherein the door body (9) and the control panel (10) are arranged between the upper part and the lower part, and an air outlet (11) is arranged on the cavity front plate (2.3) and positioned between the door body (9) and the control panel (10); the door body (9) is a hollow body, a door body air inlet channel (9.1) is formed in the door body (9), a third air inlet hole (9.4) is formed in the bottom end of the door body (9), a second air outlet hole (9.3) facing the rear of the box body (1) is formed in the top of the door body (9), a fifth air inlet hole (2.5) communicated with the second air outlet hole (9.3) is formed in the cavity front plate (2.3), the air channel of the exhaust component (3) is communicated with the fifth air inlet hole (2.5), and the third air inlet hole (9.4), the door body air inlet channel (9.1), the second air outlet hole (9.3), the fifth air inlet hole (2.5), the air channel of the exhaust component (3) and the air outlet (11) are sequentially communicated to form a door body heat dissipation channel; part of cold air entering the door body (9) enters an air channel of the exhaust assembly (3) through the second air outlet hole (9.3) and the fifth air inlet hole (2.5), and is discharged out of the box body (1) through the exhaust fan (3.2) and the air outlet (11);
the device also comprises a second air inlet hole (7.2) arranged below the power supply (4), wherein the second air inlet hole (7.2) is communicated with the bottom space of the cavity (2), and the bottom space of the cavity (2) is communicated with the outside of the box body (1); the cooking appliance further comprises a door body (9) connected with the box body (1), a third air inlet hole (9.4) is formed in the bottom end of the door body (9), a first air outlet hole (9.2) is formed in the rear side wall of the lower portion of the door body (9), a cavity front plate (2.3) is arranged on the front side of the cavity (2), and a fourth air inlet hole (2.4) communicated with the first air outlet hole (9.2) is formed in the lower portion of the cavity front plate (2.3); the bottom of the box body (1) is provided with a bottom air inlet duct (1.6) communicated with a second air inlet hole (7.2); the third air inlet hole (9.4), the first air outlet hole (9.2), the fourth air inlet hole (2.4), the bottom air inlet channel (1.6), the second air inlet hole (7.2), the power supply air suction port (3.1), the air channel of the exhaust component (3) and the air outlet (11) are sequentially communicated to form a second power supply heat dissipation channel; part of cold air entering the door body (9) enters the box body (1) through the bottom air inlet channel (1.6) and the second air inlet hole (7.2), and the part of cold air sequentially enters the air channel of the exhaust assembly (3) through the power supply (4) and the power supply air suction port (3.1), and is discharged out of the box body (1) through the exhaust fan (3.2) and the air outlet (11);
the top wall (2.1) of the cavity is provided with a smoke discharge pipe (2.2) communicated with the cavity (2), one end of the smoke discharge pipe (2.2) is communicated with an air channel of the exhaust assembly (3), and the air channel of the exhaust assembly (3) is communicated with the cavity (2) through the smoke discharge pipe (2.2) to form a smoke discharge channel; the exhaust assembly (3) comprises an exhaust hood (3.3), an upper air guide hood (3.4) and a lower air guide hood (3.5) from top to bottom; the gap between the exhaust hood (3.3) and the upper air guide hood (3.4) forms an exhaust channel (12); a gap between the upper air guide cover (3.4) and the lower air guide cover (3.5) forms an air collecting channel (13), a smoke guide cover (3.6) is arranged between the exhaust cover (3.3) and the upper air guide cover (3.4), the smoke guide cover (3.6) is transversely placed, the smoke guide cover (3.6) is provided with an air inlet guide opening (3.7) and an air outlet guide opening (3.8), the air inlet guide opening (3.7) is communicated with the smoke discharge pipe (2.2), the smoke guide cover (3.6) is positioned in the air exhaust channel (12), and the air outlet guide opening (3.8) is communicated with the air collecting channel (13); the oil smoke in the cavity (2) is discharged out of the box body (1) through the smoke discharge pipe (2.2), the smoke guide cover (3.6), the air collecting channel (13), the exhaust fan (3.2), the exhaust channel (12) and the air outlet (11); the air outlet guide port (3.8) is obliquely oriented or is opposite to the lower air guide cover (3.5); the air collecting channel (13) is provided with more than one cold air inlet (3.9), and the air collecting channel (13) is communicated with the power supply air suction port (3.1) so as to mix cavity oil smoke, hot air sucked from a power supply and external cold air in the air collecting channel (13);
the upper air guide cover (3.4) is provided with a first flue gas outlet (3.4.1), a sealing ring (3.4.2) is sleeved on the periphery of the first flue gas outlet (3.4.1), and the sealing ring (3.4.2) is positioned in a gap between the upper air guide cover (3.4) and the flue gas guide cover (3.6); a smoke discharge isolation pipe (3.5.1) is arranged on the lower air guide cover (3.5), the smoke discharge isolation pipe (3.5.1) is positioned in the first smoke discharge port (3.4.1), and the smoke discharge pipe (2.2) passes through the smoke discharge isolation pipe (3.5.1); the adjacent positions of the first flue gas outlet (3.4.1) are also provided with a second flue gas outlet (3.4.3), and the first flue gas outlet (3.4.1) and the second flue gas outlet (3.4.3) respectively correspond to an air inlet guide port (3.7) and an air outlet guide port (3.8) of the flue gas guide cover (3.6).
2. The air duct system of the cooking appliance according to claim 1, wherein a vertical wind shielding wall (5.1) is arranged on one side of the power supply fixing plate (5).
3. The air duct system of the cooking appliance according to claim 1, wherein the housing (1.7) comprises a rear cover plate (1.1), the rear cover plate (1.1) is provided with a boss (1.3) protruding towards the tail direction of the box body (1), the boss (1.3) at least covers the power supply fixing plate (5), the lower end of the boss (1.3), the lower end of the power supply (4) and the lower end of the power supply fixing plate (5) are all arranged with the bottom end of the box body (1) in a spaced mode, and a first air inlet hole (1.2) is formed in the lower side of the boss (1.3) corresponding to the lower end of the power supply fixing plate (5).
4. The air duct system of the cooking appliance according to claim 1, wherein the cavity (2) is provided with a cavity rear wall (2.6), a hot air motor (6) and a motor fixing plate (7) are arranged behind the cavity rear wall (2.6), the hot air motor (6) is fixed behind the motor fixing plate (7), a motor heat shield (8) is further arranged between the motor fixing plate (7) and the cavity rear wall (2.6), the motor heat shield (8) is aligned with the hot air motor (6), and the power supply fixing plate (5) is fixed on the motor fixing plate (7); the position that is located hot-blast motor (6) of motor fixed plate (7) below is equipped with concave part (7.1) towards cavity (2) direction is sunken, concave part (7.1) are equipped with around penetrating second fresh air inlet (7.2), box (1) still include base (1.4), the tail end of base (1.4) is equipped with turn-ups (1.5) behind the base of turning up, the position that concave part (7.1) downside corresponds turn-ups (1.5) behind the base is equipped with and connects convex hull (7.3), connect convex hull (7.3) and base turn-ups (1.5) of concave part (7.1) link to each other behind base to turn-ups (1.5) and concave part (7.1) each other be the interval setting, and form clearance L between the two.
5. The air duct system of a cooking appliance according to any one of claims 1-4, wherein the cooking appliance is at least an embedded drawer oven, the oven is provided with a drawer (14), the front end of the drawer (14) is provided with a door body (9), and the drawer (14) is movably connected with the oven body (1) through a sliding rail (15).
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| CN201910690122.0A CN110301834B (en) | 2019-07-29 | 2019-07-29 | Air duct system of cooking electric appliance |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110710891A (en) * | 2019-11-23 | 2020-01-21 | 高嘉炜 | Electric oven with multiple heat radiation structure |
| CN111031766A (en) * | 2019-12-31 | 2020-04-17 | 广东美的厨房电器制造有限公司 | Heat dissipation air duct of electric oven and electric oven with same |
| CN111035276B (en) * | 2019-12-31 | 2021-12-10 | 广东美的厨房电器制造有限公司 | A embedded oven that is used for oven door subassembly of embedded oven and has it |
| CN111839254B (en) * | 2020-06-30 | 2021-11-26 | 宁波方太厨具有限公司 | Baking cooking device |
| CN113543608B (en) * | 2021-08-18 | 2024-03-19 | 广东美的厨房电器制造有限公司 | Fan seat, air duct assembly and cooking utensil |
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