CN101392923B - Microwave oven with a heat exchanger - Google Patents

Abstract

The invention relates to a microwave oven. The microwave oven comprises a shell, a microwave generating device, a heating tube cover, an air guide tube, a fan and a door body, wherein the heating tube cover is arranged at the top of the shell, a hollow cavity for accommodating the heating tube is formed in the heating tube cover, the heating tube is arranged in the hollow cavity formed in the heating tube cover, the air guide tube surrounds the outer side of the heating tube cover, the microwave generating device and the fan are arranged on one side of the shell, an opening at one end of the air guide tube is arranged in a position corresponding to the fan, and the other end of the air guide tube is communicated with the other side of. The air guide pipe close to the cooling fan can extract a part of air blown out from the cooling fan, the part of the air passes through the heating pipe through the air guide pipe, and the heat of the heating pipe is brought into the cavity of the microwave oven through the top and the side part of the shell, so that the air convection in the cavity is promoted. Therefore, the invention can not only accelerate the temperature rise of the furnace chamber, but also cool and protect the heating tube and the surrounding parts, reduce the temperature requirement specification of the parts, prolong the service life of the parts, and the air source can directly come from the cooling fan driven by the cooling motor.

Description

Micro-wave oven

technical field

The invention relates to a microwave oven, in particular to a microwave oven with a barbecue function, which belongs to the modification technology of the microwave oven.

Background technique

Existing microwave ovens with barbecue function use heat pipes to heat food from top to bottom mainly through heat radiation. The disadvantages are that the temperature rise in the oven cavity is slow, the temperature difference between the upper and lower sides of the oven cavity is large, and the barbecue effect is low. It is not very ideal, and the hot air convection mechanism of the traditional microwave oven is relatively complicated, and the cost is also quite high. Simultaneously, except that the cooling fan of microwave oven is directly used to reduce the temperature of microwave oven components, it does not make a major direct contribution to increasing the temperature in the oven cavity.

Contents of the invention

The purpose of the present invention is to consider the above problems and provide a microwave oven that not only accelerates the temperature rise of the oven cavity, promotes uniform temperature distribution, but also reduces heat waste to a certain extent. The invention utilizes a cooling fan to improve the temperature in the oven cavity to improve the cooking effect.

The technical solution of the present invention is to include a housing, a microwave generating device, a heating pipe, a heating pipe cover, an air duct, a fan, and a door body, wherein the heating pipe cover is installed on the top of the housing, and the heating pipe cover is made to accommodate The hollow cavity of the heating pipe, the heating pipe is installed in the hollow cavity made of the heating pipe cover, the air guide pipe is surrounded on the outside of the heating pipe cover, the microwave generating device and the fan are installed on one side of the shell, and the air guide The opening at one end of the tube is placed at a position corresponding to the fan, and the other end communicates with the other side of the housing.

The opening at one end of the air guiding pipe is close to the fan, and the opening at the other end of the air guiding pipe communicates with one side of the housing directly or through several holes.

The main body of the above-mentioned air guiding pipe and its one end and the other end are integrally made, or the main body of the air guiding pipe, its one end and the other end are made separately, and then connected together.

The above-mentioned heating pipe cover is made with a hollow cavity for accommodating the heating pipe, which is made separately and fixed on the top of the casing; or the heating pipe cover is directly made integrally with the casing.

The above-mentioned fan is a cooling fan of the microwave generating device, or a special fan.

The above-mentioned heating tube is a quartz tube or a halogen tube or a metal electric heating tube, or includes a quartz tube and a halogen tube, or includes a metal electric heating tube and a halogen tube, or includes a quartz tube, a halogen tube and a metal electric heating tube; the above-mentioned heating tube is made of Out as a straight line, or as a curved type.

The bottom of the above-mentioned heating pipe cover has an opening, and the opening communicates with the cavity surrounded by the shell; The formed cavities are connected.

The side wall or top surface of the above-mentioned heating pipe cover has an opening, and the opening communicates with the cavity surrounded by the air guide pipe; or a number of air guide holes are made on the side wall or top surface of the heating pipe cover, which pass through Several air guide holes communicate with the air guide pipe.

The present invention adopts the structure that the opening at one end of the air guide tube is placed at a position corresponding to the fan, and the other end is connected to one side of the housing, so that the air guide tube close to the cooling fan can extract a part of the wind blown by the cooling fan. The heating pipe is blown through the air guide pipe, and the heat of the heating pipe is brought into the cavity of the microwave oven through the top and the side of the casing, so as to promote the formation of air convection in the cavity. Therefore, the present invention can not only accelerate the temperature rise of the furnace chamber, but also provide cooling protection for the heating pipe and its surrounding components, reduce the temperature requirements of the components, prolong their service life, and the air source can be directly from the cooling motor driven cooling fan. The invention is a novel microwave oven with ingenious design, simple structure, low cost and good effect.

Description of drawings

Fig. 1 is the perspective view of the present invention after removing the outer cover;

Fig. 2 is a perspective view of Fig. 1 turned from another angle;

Fig. 3 is a schematic structural view of dismantling the air duct according to Embodiment 1 of the present invention;

Fig. 4 is the top view of the present invention;

Fig. 5 is the sectional view of A-A among Fig. 4;

Fig. 6 is a schematic structural diagram of dismantling the air duct according to Embodiment 2 of the present invention.

Detailed ways

Example 1:

The structural diagram of the present invention is shown in Figures 1, 2, 3, 4, and 5, including a housing 1, a microwave generating device 2, a heating pipe 3, a heating pipe cover 4, an air guide pipe 5, a fan 6, and a door body 7. Wherein the heating pipe cover 4 is installed on the top of the housing 1, and the heating pipe cover 4 is made with a hollow cavity for accommodating the heating pipe 3, and the heating pipe 3 is installed in the hollow cavity made by the heating pipe cover 4, and the air duct 5 surrounds the outer side of the heating pipe cover 4, the microwave generating device 2 and the fan 6 are installed on one side of the housing 1, wherein the opening of one end 5-1 of the air guide pipe 5 is placed at a position corresponding to the fan 6, and the other One end 5 - 2 communicates with the other side of the housing 1 .

The opening at one end 5 - 1 of the air guiding pipe 5 is close to the fan 6 , and the opening at the other end 5 - 2 of the air guiding pipe 5 communicates with one side of the casing 1 directly or through several holes.

The main body of the above-mentioned air guide pipe 5 and its one end 5-1 and the other end 5-2 are integrally made, or the main body of the air guide pipe 5, its one end 5-1 and the other end 5-2 are respectively made, and then connected together.

The above heating pipe cover 4 is made with a hollow cavity for accommodating the heating pipe 3 , which is made separately and fixed on the top of the casing 1 ; or the heating pipe cover 4 is directly made integrally with the casing 1 .

The above-mentioned fan 6 is a cooling fan of the microwave generating device, or a fan specially provided separately for blowing air to the heating pipe 3 . In this embodiment, in order to reduce the cost and make the overall structure as simple and compact as possible, the fan 6 is a cooling fan of the microwave generating device.

The above-mentioned heating tube 3 is a quartz tube or a halogen tube or a metal electric heating tube, or includes a quartz tube and a halogen tube, or includes a metal electric heating tube and a halogen tube, or includes a quartz tube, a halogen tube and a metal electric heating tube; Among them, the above-mentioned heating tube 3 is made as a straight line, which is a quartz tube.

The bottom of the heating pipe cover 4 is made with an opening, and the opening communicates with the cavity surrounded by the housing 1; The through hole 4 - 1 communicates with the cavity surrounded by the housing 1 . In this embodiment, several through holes 4 - 1 are formed at the bottom of the heating pipe cover 4 , and the heating pipe cover 4 communicates with the cavity surrounded by the casing 1 through the several through holes 4 - 1 .

The side wall or top surface of the above-mentioned heating pipe cover 4 is made with an opening, and the opening communicates with the cavity surrounded by the air guide pipe 5; 4-2, which communicates with the air guide pipe 5 through several air guide holes 4-2. In this embodiment, several air guide holes 4-2 are made on the top surface of the heating pipe cover 4, and it communicates with the air guide pipe 5 through the several air guide holes 4-2.

The working principle of the present invention is as follows: the air guide pipe close to the cooling fan can extract a part of the wind blown out by the cooling fan, blow through the air guide pipe through the heat pipe cover and the heat pipe, and pass the heat of the heat pipe cover and heat pipe through the shell The top and sides of the oven are brought into the cavity of the microwave oven to promote the formation of air convection in the cavity.

Example 2:

The schematic diagram of the structure of the present invention is shown in Figure 6, and its structure is the same as that of Embodiment 1, except that the above-mentioned heat pipe (3) is made into a curved shape.

Claims (8)

1. micro-wave oven; Comprise housing (1), microwave generation device (2), heat-generating pipe (3), heating tube cover (4), guide duct (5), fan (6), door body (7); Wherein heating tube cover (4) is installed in the top of housing (1), and heating tube cover (4) is made the hollow cavity that holds heat-generating pipe (3), and heat-generating pipe (3) is installed in the hollow cavity that heating tube cover (4) makes; Guide duct (5) is trapped among the outside of heating tube cover (4); Microwave generation device (2) and fan (6) are installed in a side of housing (1), the opening that it is characterized in that guide duct (5) one ends (5-1) place with the corresponding position of fan (6) on, the other end (5-2) communicates with the opposite side of housing (1).

2. micro-wave oven according to claim 1, the opening that it is characterized in that above-mentioned guide duct (5) one ends (5-1) are near fan (6), and the opening of guide duct (5) other end (5-2) directly or through the opposite side of some holes with housing (1) communicates.

3. micro-wave oven according to claim 1 is characterized in that main body and the one of which end (5-1) of above-mentioned guide duct (5) and the other end (5-2) integral body makes, or the main body of guide duct (5), one of which end (5-1) and the other end (5-2) make respectively, links together again.

4. micro-wave oven according to claim 1 is characterized in that above-mentioned heating tube cover (4) makes the hollow cavity that holds heat-generating pipe (3), and it is made separately, is packed in the top of housing (1) again; Or heating tube cover (4) is direct and housing (1) one is made.

5. micro-wave oven according to claim 1 is characterized in that said fans (6) is the cooling fan of microwave generation device.

6. micro-wave oven according to claim 1; It is characterized in that above-mentioned heat-generating pipe (3) is quartz ampoule or halide torch or metal electric heat pipe; Or include quartz ampoule and halide torch, or include metal electric heat pipe and halide torch, or include quartz ampoule, halide torch and metal electric heat pipe; Above-mentioned heat-generating pipe (3) is made and is linear pattern, or makes and be flexure type.

7. according to each described micro-wave oven of claim 1 to 6, it is characterized in that open ports has been made in the bottom of above-mentioned heating tube cover (4), its open ports communicates with the cavity that housing (1) is surrounded; Or the bottom of heating tube cover (4) makes some through holes (4-1), and heating tube cover (4) communicates with the cavity that housing (1) is surrounded through some through holes (4-1).

8. according to each described micro-wave oven of claim 1 to 6, it is characterized in that the sidewall or the end face of above-mentioned heating tube cover (4) made open ports, its open ports communicates with the cavity that guide duct (5) is surrounded; Or the sidewall of heating tube cover (4) or end face make some air-guiding holes (4-2), and it communicates with guide duct (5) through some air-guiding holes (4-2).

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