CN107690208B

CN107690208B - Microwave oven with a heat exchanger

Info

Publication number: CN107690208B
Application number: CN201710600032.9A
Authority: CN
Inventors: 权淳奇; 李国锋
Original assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Priority date: 2017-07-21
Filing date: 2017-07-21
Publication date: 2021-04-27
Anticipated expiration: 2037-07-21
Also published as: CN107690208A

Abstract

The present invention provides a microwave oven, comprising: microwave oven chamber and first oil smoke sucking channel, the outside flue gas of microwave oven gets into first oil smoke sucking channel from the entry of first oil smoke sucking channel, and microwave oven still includes: the thermal compensation channel can be communicated with the first oil fume suction channel and the microwave oven cavity; and the guiding device is matched with the thermal compensation channel and is used for guiding the smoke in the first smoke absorption channel into the microwave oven cavity. According to the technical scheme, the microwave oven cavity and the first oil fume absorption channel can be communicated, the smoke in the first oil fume absorption channel is guided into the microwave oven cavity, the heat in the smoke is utilized for cooking, and the energy consumption is reduced.

Description

Microwave oven with a heat exchanger

Technical Field

The invention relates to the field of microwave ovens, in particular to a microwave oven capable of being combined with a range hood for use.

Background

At present, the microwave oven can have the function of a range hood, is generally arranged above a kitchen range and can absorb smoke generated in the cooking process of the kitchen range. In the related art, as shown in fig. 1 and fig. 2, when the microwave oven 100 combined with the range hood is used, by turning on the fan 102 of the range hood, the smoke generated by the range hood can enter the smoke suction passage 106 inside the microwave oven from the smoke suction port 104 of the bottom plate of the microwave oven 100, and then is discharged to the outside or is filtered and then discharged to the inside of the room, when the range hood is cooked with strong fire, the generated smoke has a high temperature, and the smoke enters the smoke suction passage 106 from the smoke suction port 104 of the bottom plate of the microwave oven and is directly discharged, so that the heat of the smoke cannot be utilized.

In addition, in the barbecue type microwave oven, the microwave oven can generate smoke, and the smoke is directly filtered and then discharged, so that the smoke cannot be recycled, and the energy waste is caused.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art or the related art.

To this end, an object of the present invention is to provide a microwave oven.

To achieve the above object, the present invention provides a microwave oven including: microwave oven chamber and first oil smoke sucking channel, the outside flue gas of microwave oven gets into first oil smoke sucking channel from the entry of first oil smoke sucking channel, and microwave oven still includes: the thermal compensation channel can be communicated with the first oil fume suction channel and the microwave oven cavity; and the guiding device is matched with the thermal compensation channel and is used for guiding the smoke in the first smoke absorption channel into the microwave oven cavity.

In the technical scheme, the heat compensation channel is arranged, and the leading-in device matched with the heat compensation channel is arranged at the same time, so that the microwave oven cavity and the first oil fume absorption channel can be communicated, the smoke in the first oil fume absorption channel is led into the microwave oven cavity, the heat in the smoke is utilized for cooking, and the energy consumption is reduced.

It is understood that the first fume exhaust channel may be disposed outside the microwave oven or integrated in the microwave oven between the outer case of the microwave oven and the cavity of the microwave oven.

When the guiding device is used for guiding the smoke in the first smoke absorption channel into the microwave oven cavity, part of the smoke in the first smoke absorption channel can be guided into the microwave oven cavity, and all the smoke in the first smoke absorption channel can be guided into the microwave oven cavity.

Specifically, microwave oven has the microwave oven of cigarette machine function concurrently, install in the cooking utensils top, can absorb the flue gas that cooking utensils cooking in-process produced, the flue gas gets into the first oil smoke absorption passageway in the microwave oven from the flue gas import that sets up on the microwave oven bottom plate, when the big fire of cooking utensils of below cooks, the flue gas temperature of production is higher, at this moment, the leading-in device can be with the leading-in microwave oven chamber of whole flue gas in the first oil smoke absorption passageway, a food for heating the microwave oven intracavity, the heating effect of microwave oven has been improved on the one hand, make the user more satisfied, on the other hand makes the flue gas that outside cooking utensils produced can cyclic utilization, energy waste has been reduced, reinforcing economic nature and practicality.

In addition, the microwave oven in the above embodiment provided by the present invention may further have the following additional technical features:

in the above technical solution, preferably, the microwave oven further includes: the temperature sensor is arranged at the inlet of the first oil fume suction channel and/or at the inlet of the thermal compensation channel; and the controller is connected to the temperature sensor and is used for controlling the conduction of the thermal compensation channel when the temperature detected by the temperature sensor is greater than a temperature threshold value, and otherwise, controlling the truncation of the thermal compensation channel.

In this technical scheme, through setting up temperature sensor, and make temperature sensor be connected to the controller, when setting up temperature sensor at the entrance of first oil smoke passageway, can detect the flue gas temperature of first oil smoke passageway entrance at any time, when this temperature value is greater than the temperature threshold value, judge that it can be used for heating the food of microwave oven intracavity, when setting up temperature sensor in thermal compensation passageway department, can detect more stable temperature value, can not receive the interference of outside cooking utensils, the improvement utilizes the flue gas to carry out the reliability that heats to the food of microwave oven intracavity, improve the utilization ratio of flue gas simultaneously.

Wherein the temperature threshold value can be changed in real time according to the temperature in the cavity of the microwave oven, and preferably, the temperature threshold value is higher than the current temperature in the cavity of the microwave oven.

In any one of the above technical solutions, preferably, the introduction device includes: and the thermal compensation fan is arranged in the thermal compensation channel and/or is arranged in the first oil smoke suction channel at a position corresponding to the inlet of the thermal compensation channel, and the thermal compensation fan is used for guiding the smoke in the first oil smoke suction channel into the microwave oven cavity, wherein the controller is connected to the thermal compensation fan, if the temperature detected by the temperature sensor is greater than a temperature threshold value, the thermal compensation fan is started, and if not, the thermal compensation fan is closed.

In the technical scheme, the thermal compensation fan is arranged and connected to the controller, when the temperature value detected by the temperature sensor is greater than the temperature threshold value, the controller controls the thermal compensation fan to be started, the smoke in the first oil fume suction channel is guided into the microwave oven cavity, the guiding amount of the smoke can be controlled by controlling the operating power of the thermal compensation fan, all the smoke in the first oil fume suction channel can be guided into the microwave oven cavity, and part of the smoke in the first oil fume suction channel can be guided into the microwave oven.

It will be appreciated that the flue gas temperature is now higher than the temperature in the microwave oven cavity.

The thermal compensation fan can be arranged in the thermal compensation channel, sucks the smoke in the first oil smoke suction channel into the thermal compensation channel, then discharges the smoke to the microwave oven cavity under the action of pressure, and can also be arranged at the position, corresponding to the inlet of the thermal compensation channel, in the first oil smoke suction channel, directly blows the smoke in the first oil smoke suction channel into the thermal compensation channel, and then enters the microwave oven cavity.

In any one of the above technical solutions, preferably, the introduction device further includes: and the electromagnetic valve is arranged in the thermal compensation channel and used for controlling the conduction state of the thermal compensation channel, wherein the controller is connected to the electromagnetic valve, if the temperature detected by the temperature sensor is greater than the temperature threshold value, the electromagnetic valve is opened to conduct the thermal compensation channel, and otherwise, the electromagnetic valve is closed to cut off the thermal compensation channel.

In the technical scheme, the electromagnetic valve is arranged in the microwave oven cavity, so that the conduction state of the thermal compensation channel can be controlled, the electromagnetic valve is connected with the controller, the controller can control the electromagnetic valve to be opened and closed and control the opening amplitude of a valve port of the electromagnetic valve, the conduction state of the thermal compensation channel is further controlled, and the controllability of a product is improved.

It is understood that the on state includes fully on, fully off, and an increase or decrease in the on area.

When the temperature detected by the temperature sensor is higher than the temperature threshold value, the controller controls the electromagnetic valve to be opened, and the conduction area of the valve port can be controlled according to the temperature difference between the inner side and the outer side of the microwave oven cavity and the heat supply requirement in the microwave oven cavity.

In any of the above technical solutions, preferably, the microwave oven further includes: hot-blast convection current subassembly, hot-blast convection current subassembly includes: the convection shell is internally provided with a convection cavity and assembled outside a wall plate of the microwave oven cavity, the wall plate of the microwave oven cavity is provided with an air inlet communicated with the convection cavity, and an outlet of the thermal compensation channel is communicated with the convection cavity; the first filter element is covered at the outlet position of the thermal compensation channel; the convection fan is arranged in the convection cavity and corresponds to the air inlet on the wall plate of the microwave oven cavity and the outlet of the thermal compensation channel, the convection fan is used for guiding the smoke in the thermal compensation channel into the microwave oven cavity, the controller is connected to the convection fan, if the temperature detected by the temperature sensor is greater than a temperature threshold value, the convection fan is started, and if not, the convection fan is closed.

In the technical scheme, by arranging the hot air convection assembly, the flue gas in the thermal compensation channel can be quickly guided into the microwave oven cavity by using the convection fan in the hot air convection assembly, so that the heat loss in the flue gas is reduced. Establish first filtration piece through the exit position lid at thermal compensation passageway, wherein first flue gas filters piece and includes activated carbon filter cotton and boiler net, can filter the flue gas, absorbs the poisonous and harmful gas that produces after decomposing it, reduces the negative effects that the flue gas produced the food in the microwave oven chamber, improves the security.

In addition, a self-cleaning enamel coating can be coated on the surface of the convection fan to absorb the smoke and harmful gases passing through the convection fan.

In any of the above technical solutions, preferably, the hot air convection assembly further includes: the heating pipe is arranged in the convection cavity and arranged around the convection fan, wherein the controller is connected to the heating pipe and used for controlling the heating pipe to generate heat when the temperature detected by the temperature sensor is greater than a temperature threshold value, and the flue gas in the convection cavity is heated.

In the technical scheme, the heating pipe is arranged in the convection cavity, and meanwhile, the heating pipe is arranged around the convection fan, so that the smoke in the convection cavity can be heated, the heat of the smoke is improved, and the heating effect of the smoke on food in the microwave oven cavity can be enhanced.

In any of the above technical solutions, preferably, an outer wall of the convection casing, that is, a partial inner wall of the first oil smoke suction channel, forms a thermal compensation channel on the convection casing, and the thermal compensation channel can communicate the first oil smoke suction channel and the convection cavity.

In the technical scheme, the convection shell is set as the component of the first oil fume absorption channel, and the heat compensation channel is formed on the convection shell, so that the space waste is reduced, the whole area of the microwave oven is reduced, and the practicability is high.

Preferably, a first oil fume suction channel is formed between the outer wall of the microwave oven cavity combined with the convection shell and the inner wall of the microwave oven shell, so that the usable space in the microwave oven is fully utilized, and the microwave oven has a good smoke exhaust effect.

In any one of the above technical solutions, preferably, the introduction device further includes: a damper assembly, the damper assembly comprising: the fixed bracket is assembled on the outer wall of the convection shell, and an installation groove is formed at the inner side of the fixed bracket; the rotating shaft is rotatably connected with the fixed support and arranged in the mounting groove; and one end of the wind shield extends to one side perpendicular to the wind shield to form a rotating arm with one end provided with a connecting hole, the connecting hole is fixedly connected with the rotating shaft in the mounting groove, and the wind shield is configured to be movable between a position for opening the inlet of the thermal compensation channel and a position for closing the inlet of the thermal compensation channel.

In this technical scheme, through setting up the air door subassembly, the deep bead in the air door subassembly can rotate between the relatively fixed, through rotating the deep bead, can control the entry of thermal compensation passageway and open and control the entry of thermal compensation passageway and close.

In any of the above technical solutions, preferably, the damper assembly further includes: the motor is connected to the controller, a driving shaft of the motor is fixedly connected with the rotating shaft, and the controller controls the motor to rotate forwards or backwards according to the temperature detected by the temperature sensor so as to open or close the inlet of the thermal compensation channel; and/or a rotating rod, one end of which is fixedly connected with the rotating shaft, and the other end of which extends to the outside of the microwave oven.

In this technical scheme, can control the deep bead through the motor of being connected with the controller and rotate, the realization is opened or is closed the entry of thermal compensation passageway, also can realize opening or closing the entry of thermal compensation passageway through rotating the dwang that sets up in the microwave oven outside, therefore, the clothes hanger is strong in practicability, when the controller breaks down, can directly close the entry of thermal compensation passageway through rotatory dwang, reduce the influence that the flue gas caused to the culinary art environment in the microwave oven chamber, the entry of thermal compensation passageway also can be directly opened through rotatory dwang simultaneously, heat the food in the microwave oven chamber.

In any of the above technical solutions, preferably, the damper structure further includes: and the limiting groove is arranged on the fixed support, when the rotating arm rotates into the limiting groove, the inlet of the thermal compensation channel is closed, and when the rotating arm rotates out of the limiting groove, the inlet of the thermal compensation channel is opened.

In this technical scheme, through set up the spacing groove on fixed bolster for when the entry of deep bead closed thermal compensation passageway, the rotor arm just rotates to the spacing inslot, can not produce the dislocation, and then the entry of closed thermal compensation passageway that can be fine reduces the influence that the flue gas when the temperature is less than or equal to the temperature threshold value caused the culinary art environment in the microwave oven chamber.

In any of the above technical solutions, preferably, the microwave oven further includes: the second oil fume suction channel is communicated with the exhaust port of the microwave oven cavity and is used for discharging the fume in the microwave oven cavity to the second oil fume suction channel; and the thermal circulation channel can be communicated with the second oil fume absorption channel and the thermal compensation channel, a second fume filtering piece is arranged at the communication position of the thermal circulation channel and the second oil fume absorption channel, an electromagnetic valve and/or an electric air door are arranged in the thermal circulation channel and connected to the controller, and when the accumulated running time of the microwave oven cavity in the cooking state reaches a preset time value, the electromagnetic valve and/or the electric air door are controlled to be opened so as to conduct the thermal circulation channel.

In this technical scheme, to barbecue type microwave oven on the market, through setting up the second oil absorption cigarette passageway, can discharge the inside flue gas of microwave oven, simultaneously through setting up the thermal cycle passageway, the thermal cycle passageway can communicate second oil absorption cigarette passageway and thermal compensation passageway, and the flue gas after the second flue gas filters piece can get into the thermal compensation passageway through the thermal cycle passageway, and then can heat the food in the microwave oven intracavity, makes the energy can cyclic utilization, reduces extravagantly.

In addition, the electromagnetic valve and/or the electric air door are/is arranged in the heat circulation channel and connected to the controller, when the accumulated running time of the microwave oven chamber in the cooking state reaches a preset time value, the heat of the generated smoke can be recycled, and the controller controls the electromagnetic valve and/or the electric air door to be opened so as to conduct the heat circulation channel, so that the energy consumption of the microwave oven can be reduced, and the service life of a product is prolonged.

In any of the above technical solutions, preferably, the microwave oven further includes: the inlet of the first oil smoke suction channel can be communicated with any one or more external oil smoke inlets; and the third smoke filtering piece is covered on the external oil smoke inlet.

In the technical scheme, at least one group of external oil smoke inlets are arranged on the bottom plate of the shell of the microwave oven, so that the inlet of the first oil smoke suction channel can be communicated with any one or more external oil smoke inlets, and the oil smoke suction effect is enhanced.

In addition, the third smoke filtering piece is arranged on the upper cover of each external oil smoke inlet, so that smoke can be filtered, toxic and harmful gas generated after decomposition of the smoke is absorbed, negative influence of the smoke on food in the microwave oven cavity is reduced, and safety is improved. Wherein, the third flue gas filters piece and includes that active carbon filters cotton and boiler net.

Preferably, activated carbon filter cotton can be additionally arranged at the inlet of the thermal compensation channel so as to reduce harmful substances in the smoke.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic view showing a structure of a related art microwave oven;

fig. 2 shows a left side view of the microwave oven of fig. 1;

fig. 3 illustrates a schematic configuration of a microwave oven according to an embodiment of the present invention;

fig. 4 is a partial structural view illustrating the microwave oven of fig. 3;

fig. 5 is a schematic structural view illustrating a microwave oven according to another embodiment of the present invention;

fig. 6 is a partial structural view illustrating the microwave oven of fig. 5;

fig. 7 shows a left side view of the microwave oven of fig. 3;

fig. 8 shows a left side view of the microwave oven of fig. 5;

FIG. 9 shows a schematic structural diagram of a convection assembly according to one embodiment of the invention;

FIG. 10 shows a schematic of the construction of a damper assembly according to one embodiment of the invention;

FIG. 11 is a schematic view of the damper assembly of FIG. 10 shown closed;

FIG. 12 shows a schematic view of the damper assembly of FIG. 10 when open;

fig. 13 is a schematic structural view illustrating a microwave oven according to still another embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 13 is:

(1) the related art microwave oven includes at least the following structure:

100 microwave oven, 102 smoke exhaust machine fan, 104 smoke exhaust port and 106 smoke exhaust channel.

(2) A microwave oven according to an embodiment of the present invention includes at least the following structures:

200 microwave oven, 202 microwave oven cavity, 204 first fume suction channel, 206 heat compensation channel, 208 temperature sensor, 210 heat compensation fan, 212 air door component, 214 hot air convection component, 216 microwave oven shell bottom plate, 218 third fume filter, 204A first fume suction channel inlet, 206A heat compensation channel inlet, 2122 fixing support, 2124 wind shield, 2126 motor, 2122A spacing groove, 2142 convection shell, 2144 convection fan, 2146 convection fan driving motor, 2148 heating tube, 216A external fume inlet.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.

A microwave oven according to an embodiment of the present invention will be described in detail with reference to fig. 3 to 13.

As shown in fig. 3 to 6, a microwave oven according to an embodiment of the present invention includes: a microwave oven cavity 202 and a first smoke exhaust channel 204, wherein smoke outside the microwave oven 200 enters the first smoke exhaust channel 204 from an inlet 204A of the first smoke exhaust channel 204, and the microwave oven 200 further includes: the thermal compensation channel 206, the thermal compensation channel 206 can communicate the first fume suction channel 204 and the microwave oven cavity 202; and the guiding device is arranged in a matching way with the thermal compensation channel 206 and is used for guiding the smoke in the first smoke absorption channel 204 into the microwave oven cavity 202.

In this embodiment, the thermal compensation channel 206 is provided, and the guiding device matched with the thermal compensation channel 206 is provided, so that the microwave oven cavity 202 and the first smoke exhaust channel 204 can be communicated, the smoke in the first smoke exhaust channel 204 is guided into the microwave oven cavity 202, and the heat in the smoke is utilized to cook, thereby reducing energy consumption.

It is understood that the first smoke exhaust channel 204 may be disposed outside the microwave oven 200, or may be integrated in the microwave oven 200 between the outer case of the microwave oven 200 and the microwave cavity 202.

When the introduction device is used to introduce the smoke in the first smoke absorbing passage 204 into the microwave oven cavity 202, a part of the smoke in the first smoke absorbing passage 204 may be introduced into the microwave oven cavity 202, or all the smoke in the first smoke absorbing passage 204 may be introduced into the microwave oven cavity 202.

Specifically, microwave oven 200 is microwave oven 200 that has the cigarette machine function concurrently, install in the cooking utensils top, can absorb the flue gas that the cooking of cooking utensils in-process produced, the flue gas gets into in the first oil smoke absorption passageway 204 in microwave oven 200 from the flue gas inlet that sets up on the microwave oven 200 bottom plate, when the cooking utensils of below are cooked with strong fire, the flue gas temperature of production is higher, at this moment, the leading-in device can be with the leading-in microwave oven chamber 202 of whole flue gas in the first oil smoke absorption passageway 204, be arranged in heating the food in the microwave oven chamber 202, the heating effect of microwave oven 200 has been improved on the one hand, the user is satisfied more, on the other hand makes the flue gas that outside cooking utensils produced can recycle, energy waste has been reduced, reinforcing economic nature and practicality.

In one embodiment of the present invention, as shown in fig. 7 and 8, the microwave oven 200 further includes: a temperature sensor 208 provided at an inlet 204A of the first smoke exhaust channel 204 and/or at an inlet 206A of the thermal compensation channel 206; and the controller is connected to the temperature sensor 208 and is used for controlling the thermal compensation channel 206 to be conducted when the temperature detected by the temperature sensor 208 is greater than a temperature threshold value, and otherwise, controlling the thermal compensation channel 206 to be cut off.

In this embodiment, by providing the temperature sensor 208 and connecting the temperature sensor 208 to the controller, when the temperature sensor 208 is disposed at the inlet 204A of the first smoke exhaust channel 204, the smoke temperature at the inlet of the first smoke exhaust channel 204 can be detected at any time, when the temperature value is greater than the temperature threshold value, it is determined that the temperature sensor can be used for heating food in the microwave oven cavity 202, when the temperature sensor 208 is disposed at the thermal compensation channel 206, a more stable temperature value can be detected, which is not interfered by an external cooker, so that the reliability of heating food in the microwave oven cavity 202 by using smoke is improved, and meanwhile, the utilization rate of smoke is improved.

Wherein the temperature threshold may be varied in real time depending on the temperature inside the microwave cavity 202, preferably the temperature threshold is higher than the current temperature inside the microwave cavity 202.

In some embodiments of the present invention, as shown in fig. 5, the introduction means comprises: and a thermal compensation fan 210 disposed in the thermal compensation channel 206 and/or in the first smoke absorbing channel 204 at a position corresponding to the inlet 206A of the thermal compensation channel 206, wherein the thermal compensation fan 210 is configured to guide the smoke in the first smoke absorbing channel 204 into the microwave oven cavity 202, and the controller is connected to the thermal compensation fan 210, and if the temperature detected by the temperature sensor 208 is greater than the temperature threshold, the thermal compensation fan 210 is turned on, and otherwise, the thermal compensation fan 210 is turned off.

In this embodiment, by providing the thermal compensation fan 210 and connecting the thermal compensation fan 210 to the controller, when the temperature value detected by the temperature sensor 208 is greater than the temperature threshold value, the controller controls the thermal compensation fan 210 to be turned on, so as to guide the smoke in the first smoke suction channel 204 into the microwave oven cavity 202, and by controlling the operating power of the thermal compensation fan 210, the introduction amount of the smoke can be controlled, so as to guide all the smoke in the first smoke suction channel 204 into the microwave oven cavity 202, and also guide part of the smoke in the first smoke suction channel 204 into the microwave oven 200.

It will be appreciated that the flue gas temperature is now higher than the temperature in the microwave oven cavity 202.

The thermal compensation fan 210 may be disposed in the thermal compensation channel 206, and sucks the smoke in the first smoke suction channel 204 into the thermal compensation channel 206, and then discharges the smoke to the microwave oven cavity 202 under the action of pressure, or may be disposed in the first smoke suction channel 204 at a position corresponding to the inlet 206A of the thermal compensation channel 206, and directly blows the smoke in the first smoke suction channel 204 into the thermal compensation channel 206, so as to enter the microwave oven cavity 202.

In some embodiments of the invention, the importing device further comprises: and the electromagnetic valve is arranged in the thermal compensation channel 206 and is used for controlling the conduction state of the thermal compensation channel 206, wherein the controller is connected to the electromagnetic valve, if the temperature detected by the temperature sensor 208 is greater than the temperature threshold value, the electromagnetic valve is opened to conduct the thermal compensation channel 206, otherwise, the electromagnetic valve is closed to cut off the thermal compensation channel 206.

In this embodiment, the conduction state of the thermal compensation channel 206 can be controlled by disposing the electromagnetic valve in the microwave oven cavity 202, and the electromagnetic valve is connected to the controller, and the controller can control the opening and closing of the electromagnetic valve and the opening range of the valve port of the electromagnetic valve, so as to control the conduction state of the thermal compensation channel 206, thereby improving the controllability of the product.

When the temperature detected by the temperature sensor 208 is greater than the temperature threshold, the controller controls the solenoid valve to open, and the conduction area of the valve port can be controlled according to the temperature difference between the inside and outside of the microwave oven cavity 202 and the heat supply requirement in the microwave oven cavity 202.

In some embodiments of the present invention, as shown in fig. 3, 4, 5, 6 and 9, the microwave oven 200 further includes: the hot air convection assembly 214, the hot air convection assembly 214 includes: a convection housing 2142, a convection cavity is formed in the convection housing 2142, the convection housing 2142 is assembled on the outer side of the wall plate of the microwave oven cavity 202, an air inlet communicated with the convection cavity is arranged on the wall plate of the microwave oven cavity 202, and an outlet of the thermal compensation channel 206 is communicated with the convection cavity; a first filter member covering an outlet of the thermal compensation passage 206; a convection fan 2144 disposed in the convection cavity and corresponding to the air inlet on the wall of the microwave cavity 202 and the outlet of the thermal compensation channel 206, wherein the convection fan 2144 is configured to guide the flue gas in the thermal compensation channel 206 into the microwave cavity 202, and the controller is connected to the convection fan 2144, and if the temperature detected by the temperature sensor 208 is greater than the temperature threshold, the convection fan 2144 is turned on, otherwise, the convection fan 2144 is turned off.

In this embodiment, by providing the hot air convection assembly 214, the flue gas in the thermal compensation channel 206 can be quickly introduced into the microwave cavity 202 by the convection fan 2144 in the hot air convection assembly 214, so as to reduce the heat loss in the flue gas. Establish first filtration piece through the air inlet department lid on microwave oven chamber 202's wallboard, wherein first flue gas filters the piece including active carbon filter pulp and boiler net, can filter the flue gas, absorbs the poisonous and harmful gas that produces after decomposing it, reduces the negative effects that the flue gas produced the food in microwave oven chamber 202, improves the security.

The motor 2146 for driving the convection fan is assembled on the outer surface of the convection housing, and the driving shaft thereof extends into the convection cavity to be connected with the convection fan for driving the convection fan.

In addition, a self-cleaning enamel coating may be applied to the surface of the convection fan 2144 to absorb the flue gas and harmful gases passing through the convection fan 2144.

In some embodiments of the present invention, as shown in fig. 9, the hot air convection assembly 214 further comprises: the heating pipe 2148 is disposed in the convection chamber, and the heating pipe 2148 is disposed around the convection fan 2144, wherein the controller is connected to the heating pipe 2148, and is configured to control the heating pipe 2148 to generate heat when the temperature detected by the temperature sensor is greater than a temperature threshold, so as to heat the flue gas in the convection chamber.

In this embodiment, by arranging the heating pipe 2148 in the convection cavity and arranging the heating pipe 2148 around the convection fan 2144, the smoke in the convection cavity can be heated, the heat of the smoke is increased, and the heating effect of the smoke on the food in the microwave oven cavity 202 can be enhanced.

In some embodiments of the present invention, as shown in fig. 3 to 6, an outer wall of the convection housing 2142, that is, a part of an inner wall of the first soot absorption passage 204, forms a thermal compensation passage 206 on the convection housing 2142, and the thermal compensation passage 206 can communicate the first soot absorption passage 204 and the convection chamber.

In this embodiment, by disposing the convection housing 2142 as an integral part of the first soot suction passage 204 and forming the thermal compensation passage 206 on the convection housing 2142, space waste is reduced, the overall area of the microwave oven 200 is reduced, and the practicability is strong.

Preferably, a first smoke exhaust channel 204 is formed between the outer wall of the microwave oven cavity 202 combined with the convection housing 2142 and the inner wall of the outer shell of the microwave oven 200, so that the usable space in the microwave oven 200 is fully utilized, and a good smoke exhaust effect is achieved.

In some embodiments of the present invention, as shown in fig. 10 to 12, the introduction device further includes: a damper assembly 212, the damper assembly 212 comprising: a fixing bracket 2122 assembled on the outer wall of the convection housing 2142, wherein a mounting groove is formed inside the fixing bracket 2122; the rotating shaft is rotatably connected with the fixed support 2122 and arranged in the mounting groove; wind deflector 2124, one end of wind deflector 2124 extending to a side perpendicular to wind deflector 2124 to form a pivot arm having a coupling hole at one end, the coupling hole being fixedly coupled to the pivot shaft in the mounting groove, wind deflector 2124 being configured to be movable between a position of opening inlet 206A of thermal compensation channel 206 and a position of closing inlet 206A of thermal compensation channel 206.

In this embodiment, by providing the damper assembly 212, the air deflectors 2124 in the damper assembly 212 can be rotated relative to each other, and by rotating the air deflectors 2124, the inlet 206A of the thermal compensation passage 206 can be controlled to open and the inlet 206A of the thermal compensation passage 206 can be controlled to close.

In some embodiments of the present invention, as shown in fig. 10-12, the damper assembly 212 further comprises: a motor 2126 connected to the controller, wherein a driving shaft of the motor 2126 is fixedly connected to the rotating shaft, and the controller controls the motor 2126 to rotate forward or backward to open or close the inlet 206A of the thermal compensation channel 206 according to the temperature detected by the temperature sensor 208; and/or a rotation lever, one end of which is fixedly connected with the rotation shaft and the other end of which extends to the outside of the microwave oven 200.

In this embodiment, the motor 2126 connected to the controller may control the wind deflector 2124 to rotate, so as to open or close the inlet 206A of the thermal compensation channel 206, or open or close the inlet 206A of the thermal compensation channel 206 by rotating the rotating rod disposed outside the microwave oven 200, which is highly practical, when the controller fails, the inlet 206A of the thermal compensation channel 206 may be directly closed by rotating the rotating rod, so as to reduce the influence of the smoke on the cooking environment in the microwave oven cavity 202, and at the same time, the inlet 206A of the thermal compensation channel 206 may be directly opened by rotating the rotating rod, so as to heat the food in the microwave oven cavity 202.

In some embodiments of the present invention, as shown in fig. 6 and 12, the damper structure further comprises: and a limiting groove 2122A formed in the fixing bracket, wherein when the rotating arm rotates into the limiting groove 2122A, the inlet 206A of the thermal compensation channel 206 is closed, and when the rotating arm rotates out of the limiting groove 2122A, the inlet 206A of the thermal compensation channel 206 is opened.

In this embodiment, the fixing bracket is provided with the limiting groove 2122A, so that when the wind shield 2124 closes the inlet 206A of the thermal compensation channel 206, the rotating arm just rotates into the limiting groove 2122A, and no dislocation occurs, and thus the inlet 206A of the thermal compensation channel 206 can be closed well, and the influence of the smoke at a temperature less than or equal to the temperature threshold on the cooking environment in the microwave oven cavity 202 is reduced.

In some embodiments of the present invention, the microwave oven 200 further comprises: the second oil fume suction channel is communicated with the smoke exhaust port of the microwave oven cavity 202 and is used for exhausting smoke in the microwave oven cavity 202 to the second oil fume suction channel; and the thermal circulation channel can be communicated with the second oil fume suction channel and the thermal compensation channel 206, and a second fume filtering member is arranged at the communication position of the thermal circulation channel and the second oil fume suction channel, wherein an electromagnetic valve and/or an electric air door are arranged in the thermal circulation channel, the electromagnetic valve and/or the electric air door are connected to the controller, and when the accumulated running time of the microwave oven cavity 202 in the cooking state reaches a preset time value, the electromagnetic valve and/or the electric air door are controlled to be opened so as to conduct the thermal circulation channel.

In this embodiment, for the barbecue microwave oven 200 in the market, through setting up the second oil smoke suction channel, can discharge the inside flue gas of microwave oven 200, through setting up the thermal cycle passageway simultaneously, the thermal cycle passageway can communicate second oil smoke suction channel and thermal compensation passageway 206, and the flue gas after the second flue gas filters piece can get into the thermal compensation passageway 206 through the thermal cycle passageway, and then can heat the food in the microwave oven chamber 202, makes the energy can cyclic utilization, reduces extravagantly.

In addition, by arranging the electromagnetic valve and/or the electric air door in the thermal circulation channel and connecting the electromagnetic valve and/or the electric air door to the controller, when the accumulated running time of the microwave oven cavity 202 in the cooking state reaches a preset time value, the heat of the generated smoke can be recycled, and the controller controls the electromagnetic valve and/or the electric air door to be opened so as to conduct the thermal circulation channel, so that the energy consumption of the microwave oven 200 can be reduced, and the service life of a product is prolonged.

In some embodiments of the present invention, as shown in fig. 13, the microwave oven 200 further includes: at least one set of external oil smoke inlets 216A, which are arranged on the bottom plate 216 of the housing of the microwave oven 200, wherein the inlet 204A of the first oil smoke suction channel 204 can be communicated with any one or more external oil smoke inlets 216A; a third flue gas filter 218 covering the exterior cooking fume inlet 216A.

In this embodiment, at least one set of external smoke inlets 216A is disposed on the bottom plate 216 of the housing of the microwave oven 200, so that the inlet 204A of the first smoke suction channel 204 can communicate with any one or more external smoke inlets 216A, thereby enhancing the smoke suction effect.

In addition, the third smoke filter 218 is covered on each external oil smoke inlet 216A, so that smoke can be filtered, toxic and harmful gas generated after decomposition of the smoke can be absorbed, negative effects of the smoke on food in the microwave oven cavity 202 are reduced, and safety is improved. Wherein the third flue gas filter 218 comprises activated carbon filter wool and a boiler mesh.

Preferably, activated carbon filter cotton may be added at the inlet 206A of the thermal compensation channel 206 to reduce harmful substances in the flue gas.

The technical scheme of the invention is explained in detail by combining the attached drawings, and the invention provides the microwave oven which can communicate the microwave oven cavity with the first oil fume suction channel by arranging the thermal compensation channel and arranging the guide device matched with the thermal compensation channel, guide the smoke in the first oil fume suction channel into the microwave oven cavity, cook by using the heat in the smoke and reduce the energy consumption.

In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A microwave oven, comprising: microwave oven chamber and first oil smoke sucking channel, the outside flue gas of microwave oven gets into from the entry of first oil smoke sucking channel in the first oil smoke sucking channel, its characterized in that, microwave oven still includes:

the thermal compensation channel can be communicated with the first oil fume suction channel and the microwave oven cavity;

the guiding device is matched with the thermal compensation channel and used for guiding the smoke in the first smoke absorption channel into the microwave oven cavity;

a hot air convection assembly, the hot air convection assembly comprising:

the convection shell forms a convection cavity therein, and is assembled outside a wall plate of the microwave oven cavity;

the introduction device further includes: a damper assembly, the damper assembly comprising:

the fixed bracket is assembled on the outer wall of the convection shell, and an installation groove is formed at the inner side of the fixed bracket;

the rotating shaft is rotatably connected with the fixed support and arranged in the mounting groove;

and one end of the wind shield extends to one side perpendicular to the wind shield to form a rotating arm with one end provided with a connecting hole, the connecting hole is fixedly connected with the rotating shaft in the mounting groove, and the wind shield is configured to be movable between a position for opening the inlet of the thermal compensation channel and a position for closing the inlet of the thermal compensation channel.

2. The microwave oven according to claim 1, further comprising:

a temperature sensor disposed at an inlet of the first fume suction passage, and/or

The heat compensation channel is arranged at the inlet of the heat compensation channel;

and the controller is connected to the temperature sensor and used for controlling the conduction of the thermal compensation channel when the temperature detected by the temperature sensor is greater than a temperature threshold value, and otherwise, controlling the truncation of the thermal compensation channel.

3. The microwave oven as claimed in claim 2, wherein the introduction means comprises:

a thermally compensated fan disposed in the thermally compensated channel, and/or

The heat compensation fan is arranged in the first oil fume suction channel and corresponds to the inlet of the heat compensation channel, the heat compensation fan is used for guiding the smoke in the first oil fume suction channel into the microwave oven cavity,

the controller is connected to the thermal compensation fan, and if the temperature detected by the temperature sensor is greater than the temperature threshold value, the thermal compensation fan is started, otherwise, the thermal compensation fan is closed.

4. The microwave oven as claimed in claim 2, wherein the introduction means further comprises:

the electromagnetic valve is arranged in the thermal compensation channel and is used for controlling the conduction state of the thermal compensation channel,

the controller is connected to the electromagnetic valve, if the temperature detected by the temperature sensor is greater than the temperature threshold value, the electromagnetic valve is opened to conduct the thermal compensation channel, and if not, the electromagnetic valve is closed to intercept the thermal compensation channel.

5. The microwave oven of claim 2, wherein the hot air convection assembly further comprises:

the first smoke filter element is covered at the outlet position of the thermal compensation channel;

a convection fan arranged in the convection cavity and corresponding to the air inlet on the wall plate of the microwave oven cavity and the outlet of the thermal compensation channel, wherein the convection fan is used for guiding the flue gas in the thermal compensation channel into the microwave oven cavity,

the microwave oven comprises a microwave oven cavity, a convection cavity, a controller, a temperature sensor and a convection fan, wherein an air inlet communicated with the convection cavity is formed in a wall plate of the microwave oven cavity, an outlet of the thermal compensation channel is communicated with the convection cavity, the controller is connected to the convection fan, if the temperature detected by the temperature sensor is greater than a temperature threshold value, the convection fan is started, and if not, the convection fan is closed.

6. The microwave oven of claim 5, wherein the hot air convection assembly further comprises:

a heating pipe disposed in the convection chamber and surrounding the convection fan,

the controller is connected to the heating pipe and used for controlling the heating pipe to generate heat when the temperature detected by the temperature sensor is greater than the temperature threshold value, and heating the smoke in the convection cavity.

7. The microwave oven according to claim 5,

the outer wall of the convection shell is part of the inner wall of the first oil smoke suction channel, the heat compensation channel is formed on the convection shell, and the heat compensation channel can be communicated with the first oil smoke suction channel and the convection cavity.

8. The microwave oven of claim 2, wherein the damper assembly further comprises:

the motor is connected to the controller, a driving shaft of the motor is fixedly connected with the rotating shaft, and the controller controls the motor to rotate forwards or backwards according to the temperature detected by the temperature sensor so as to open or close the inlet of the thermal compensation channel; and/or

A rotating rod, one end of the rotating rod is fixedly connected with the rotating shaft, and the other end of the rotating rod extends to the outside of the microwave oven.

9. The microwave oven of claim 1, wherein the damper assembly further comprises:

the limiting groove is formed in the fixed support, when the rotating arm rotates to the inside of the limiting groove, the inlet of the thermal compensation channel is closed, and when the rotating arm rotates to the outside of the limiting groove, the inlet of the thermal compensation channel is opened.

10. The microwave oven according to any one of claims 2 to 8, further comprising:

the second oil fume suction channel is communicated with the exhaust gas port of the microwave oven cavity and is used for discharging the fume in the microwave oven cavity to the second oil fume suction channel;

the thermal circulation channel can be communicated with the second oil fume suction channel and the thermal compensation channel, a second fume filter is arranged at the communication position of the thermal circulation channel and the second oil fume suction channel,

wherein an electromagnetic valve and/or an electric air door are arranged in the heat circulation channel and connected to the controller,

and when the accumulated running time of the microwave oven cavity in the cooking state reaches a preset time value, controlling the electromagnetic valve and/or the electric air door to be opened so as to conduct the heat circulation channel.

11. The microwave oven according to any one of claims 1 to 9, further comprising:

the first oil smoke suction channel is arranged on the bottom plate of the shell of the microwave oven, and the inlet of the first oil smoke suction channel can be communicated with any one or more external oil smoke inlets;

and the third smoke filtering piece is covered on the external oil smoke inlet.