CN214906083U - Negative pressure type exhaust system of oven - Google Patents

Abstract

The utility model discloses an oven negative pressure formula exhaust system, including the oven box, the anterior position at the top of oven box is formed with the exhaust hole, the corresponding top of oven box is equipped with the heat insulating board, it is formed with the round hole to go up the heat insulating board, it is equipped with the blast pipe to go up between the top of heat insulating board and oven box, the exhaust hole passes through blast pipe and round hole switch-on, the upside of going up the heat insulating board is equipped with exhaust fan and aviation baffle, the aviation baffle encloses with last heat insulating board and is equipped with the wind channel, the front position in wind channel corresponds the front portion of oven box, exhaust fan is equipped with the air outlet, the rear end and the air outlet in wind channel are connected, the round hole switches-on with the wind channel. The utility model discloses a negative pressure formula exhaust system can effectively reduce the oil smoke that toasts food in-process at the oven and to the influence of oven and cupboard, can guarantee to form a pressure-fired system in the oven box, reduces the inside heat of oven box and scatters and disappears, is favorable to improving heat utilization efficiency.

Description

Negative pressure type exhaust system of oven

Technical Field

The utility model relates to an exhaust system of oven, concretely relates to oven negative pressure formula exhaust system.

Background

As a common kitchen appliance, ovens are widely used around the world. The safety, durability and energy saving are always important evaluation indexes of oven products, and in view of the above requirements, manufacturers of ovens continuously improve the quality of the oven products through various improvement schemes, but the exhaust system of the oven in the prior art still has shortcomings, the exhaust port of the oven in the prior art is usually arranged at the back or the top of the oven body, and under the condition that the oven is embedded in a cabinet of a kitchen for use, oil smoke generated in the process of baking food by the oven can cause oil dirt to be accumulated on the inner wall of the cabinet, so the exhaust system of the oven in the prior art needs to be improved.

Disclosure of Invention

An object of the utility model is to overcome prior art's not enough, provide an oven negative pressure formula exhaust system, it can effectively reduce the oil smoke that produces to oven and cupboard at the oven toasts food in-process.

The purpose of the utility model is realized by the following technical scheme.

The utility model discloses an oven negative pressure formula exhaust system, including the oven box, the anterior position at the top of oven box is formed with the exhaust hole, wherein, the corresponding top of oven box is equipped with the heat insulating board, it is formed with the round hole to go up the heat insulating board, go up the heat insulating board with be equipped with the blast pipe between the top of oven box, the exhaust hole passes through the blast pipe with the round hole switch-on, the upside of going up the heat insulating board is equipped with exhaust fan and aviation baffle, the aviation baffle with it encloses and is equipped with the wind channel to go up the heat insulating board, the front position in wind channel corresponds the front portion of oven box, exhaust fan is equipped with the air outlet, the rear end in wind channel with the air outlet is connected, the round hole with the wind channel switch-on.

Preferably, the upper heat insulation plate is provided with a groove, and the round hole is formed in the groove; the exhaust baffle is arranged on the groove in a covering mode, an exhaust seam is formed between the edge of the front end of the exhaust baffle and the edge of the front end of the groove, and the round hole is communicated with the air channel through the exhaust seam.

Preferably, the groove is triangular, the exhaust slit extends in the left-right direction, and the circular hole is formed at the rear of the groove.

Preferably, the exhaust fan is a cross-flow fan, the width of the air duct is gradually increased from the rear to the front, and the height of the air duct is gradually decreased from the rear to the front.

Preferably, at least three vent holes are formed in the bottom of the exhaust pipe, the vent holes are circumferentially distributed, protruding pieces are formed on the edges of the exhaust holes, the vent holes are respectively arranged corresponding to the positions of the exhaust holes, the protruding pieces are inserted into the corresponding vent holes in an adaptive manner, and the upper end of the exhaust pipe penetrates through the round hole.

Preferably, the left side and the right side of the oven body are respectively provided with a side plate, the left end and the right end of the upper heat insulation plate are respectively fixedly connected with the corresponding side plates through corresponding screws, and a heat insulation cavity is arranged around the top of the upper heat insulation plate and the top of the oven body.

Compared with the prior art, the utility model, its beneficial effect is: set up the heat insulating board through the top that corresponds at oven box, it is formed with the round hole to go up the heat insulating board, it is equipped with the blast pipe to go up between the top of heat insulating board and oven box, the exhaust hole passes through blast pipe and round hole switch-on, the upside of going up the heat insulating board is equipped with exhaust fan and aviation baffle, the aviation baffle encloses with last heat insulating board and is equipped with the wind channel, the front position in wind channel corresponds oven box's front portion, exhaust fan is equipped with the air outlet, the rear end and the air outlet in wind channel are connected, the round hole switches-on with the wind channel, thereby can form the negative pressure in making the wind channel, make the inside oil smoke of oven box can be inhaled to the wind channel in and then from the front end discharge in wind channel, the utility model discloses a negative pressure formula exhaust system can effectively reduce the oil smoke that produces at the oven toast food in-process to oven and cupboard's influence.

Drawings

Fig. 1 is a schematic perspective view of an overhead direction of the exhaust system according to the present invention.

Fig. 2 is an exploded view of the exhaust fan and the air guide plate of the present invention shown in fig. 1.

Fig. 3 is an exploded view of the exhaust baffle of the present invention further removed from the structure shown in fig. 2.

Fig. 4 is an exploded view of the upper heat insulation board of the present invention further removed from the structure shown in fig. 3.

Fig. 5 is a schematic cross-sectional view of the right-side view of the exhaust system of the present invention.

Fig. 6 is a partial structural view of a portion a of fig. 5.

Fig. 7 is a schematic view of the perspective structure of the exhaust pipe of the present invention in the bottom view direction.

Fig. 8 is a schematic view of the oven box body of the present invention viewed from the right rear side of the oven box body.

Fig. 9 is a partial structural view at B of fig. 8.

Description of reference numerals: 1-an exhaust fan; 101-an air outlet; 102-an air inlet; 2-a wind deflector; 3-an exhaust baffle; 4, mounting a heat insulation plate; 401-grooves; 402-a circular hole; 5-oven body; 501-air exhaust holes; 502-a tab; 6-an exhaust pipe; 601-a vent hole; 7-side plate; 8-air duct; 9-air exhaust seam; 10-insulating chamber.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The utility model discloses an oven negative pressure formula exhaust system, as shown in fig. 1 to fig. 4, including oven box 5, oven box 5's inside is formed with the stoving cavity that is used for holding food, combines fig. 8 as fig. 1 to show, and the front portion position at oven box 5's top is formed with exhaust hole 501, that is to say, exhaust hole 501 communicates the inside stoving cavity of oven box 5, and when the oven toasted food, the inside oil smoke of oven box 5 can be followed exhaust hole 501 and discharged.

As shown in fig. 1 to 6, an upper heat insulation plate 4 is disposed above and corresponding to the oven body 5, a circular hole 402 is formed in the upper heat insulation plate 4, and an exhaust duct 6 is disposed between the upper heat insulation plate 4 and the top of the oven body 5. As shown in fig. 4 and 5, the exhaust hole 501 communicates with the circular hole 402 through the exhaust pipe 6, specifically, the lower end of the exhaust pipe 6 is connected to the exhaust hole 501, and the upper end of the exhaust pipe 6 is connected to the circular hole 402. As shown in fig. 1, an exhaust fan 1 and an air deflector 2 are disposed on the upper side of the upper heat insulation board 4, as shown in fig. 5, an air duct 8 is enclosed by the air deflector 2 and the upper heat insulation board 4, as shown in fig. 1 and 8, the front end of the air duct 8 corresponds to the front part of the oven body 5, as shown in fig. 5, the exhaust fan 1 is provided with an air outlet 101, the rear end of the air duct 8 is connected with the air outlet 101, and the circular hole 402 is communicated with the air duct 8.

The working principle of the exhaust system of the present invention is briefly described as follows: as shown in fig. 5, when food is baked in the oven, oil smoke is generated in the food placed in the oven box 5, and the internal air pressure of the oven box 5 is increased due to the temperature increase in the oven box 5, during the process of baking food, the exhaust fan 1 is operated, the air inlet 102 of the exhaust fan 1 sucks in fresh air, the air flow blown out from the air outlet 101 of the exhaust fan 1 flows from the rear end of the air duct 8 to the front end of the air duct 8, and the air flow flows from the rear to the front in the air duct 8, so the static air pressure in the air duct 8 is reduced, and the static air pressure at the round hole 402 is also reduced (that is, a negative pressure is formed at the round hole 402), so that the air in the oven box 5 is sucked into the air duct 8; specifically, air inside the oven body 5 enters the exhaust pipe 6 through the exhaust hole 501, and then enters the air duct 8 from the exhaust pipe 6 through the circular hole 402; the air with oil smoke inside the oven body 5 and the air sucked from the air inlet 102 of the exhaust fan 1 are both discharged from the front end of the air duct 8 after being mixed in the air duct 8, and since the front end of the air duct 8 corresponds to the front portion of the oven body 5, in the case where the oven is embedded in a cabinet for use, the oil smoke can be discharged to the outside of the cabinet. Through setting up the utility model discloses an exhaust system guarantees that the oil smoke that toasts food in-process at the oven can be taken away by the negative pressure formula exhaust system who is formed by blast pipe 6, aviation baffle 2 and exhaust fan 1 fast to the oil smoke can not overflow the top of oven, and the oil smoke more can not overflow the inner wall of cupboard, avoids the oil smoke to accumulate for a long time and produces dirty easily, is favorable to making the cupboard keep clean, also avoids the oil smoke to exert an influence to the electrical part life-span and the security of oven. Because the oil smoke does not flow through exhaust fan 1, so exhaust fan 1's inside can not accumulate the filth because of the oil smoke forms, is favorable to making the utility model discloses an exhaust system can long-term steady operation effectively.

Further, as shown in fig. 4 and 6, the upper heat insulation board 4 is formed with a groove 401, the groove 401 is configured to be recessed downward, and a circular hole 402 is disposed in the groove 401; as shown in fig. 2 to 4, the exhaust system of the present invention further includes an exhaust baffle 3, the exhaust baffle 3 covers the groove 401, as shown in fig. 5 and 6, an exhaust slit 9 is formed between the front end edge of the exhaust baffle 3 and the front end edge of the groove 401, and the circular hole 402 is communicated with the air duct 8 through the exhaust slit 9. As shown in fig. 6, the air flow flowing from the inside of the oven case 5 to the circular hole 402 needs to flow through the gap between the groove 401 and the exhaust baffle 3, and then enters the air duct 8 from the exhaust seam 9, when the oven is used, the air pressure inside the oven case 5 is increased due to the temperature rise, and the resistance of the air flow from the inside of the oven case 5 to the exhaust seam 9 is increased by the shielding effect of the exhaust baffle 3, so that the formation of a micro-positive pressure system in the oven case 5 can be ensured, the heat loss inside the oven case 5 is reduced, and the heat utilization efficiency is improved (i.e., the energy saving is facilitated).

Further, as shown in fig. 4, the groove 401 is set to be triangular, three corners of the groove 401 are all provided with round corners, as shown in fig. 2, the exhaust slit 9 extends in the left-right direction, that is, one of the triangular corners of the groove 401 extends in the left-right direction, and the front end edge of the exhaust baffle 3 also extends in the left-right direction, as shown in fig. 4, the circular hole 402 is set at the rear portion of the groove 401, that is, the circular hole 402 is set at a corner position near the rear portion of the groove 401, so that the inner wall surfaces of the groove 401 at the left and right sides of the circular hole 402 can guide the flow of the air flow from the circular hole 402 to the exhaust slit 9, and the flow of the oil-containing flue gas flowing out from the circular hole 402 is prevented from forming turbulence in the groove 401 to affect the oil-fume-discharging effect, by setting the exhaust slit 9 extending in the left-right direction and the circular hole 402 at the rear portion of the groove 401, the air flow from the circular hole 402 to the exhaust slit 9 is also in the same direction as the air flow in the air duct 8, the airflow passing through the air duct 8 is prevented from flowing backward to the circular hole 402.

Further, as shown in fig. 1 and 2, the exhaust fan 1 is a cross-flow fan, the width of the air duct 8 is gradually increased from the rear to the front, the "width of the air duct 8" is a width dimension of the air duct 8 in the left-right direction, as shown in fig. 1 and 5, the height of the air duct 8 is gradually decreased from the rear to the front, and the "height of the air duct 8" is a height dimension of the air duct 8 in the up-down direction. Because the exhaust fan 1 is a cross-flow fan, the air outlet 101 of the exhaust fan 1 is in a flat-long shape, and the rotation axis of the wind wheel of the exhaust fan 1 can be arranged along the left-right direction, as can be seen from the above, the upper heat insulation plate 4 is used as the lower wall of the air duct 8, so that the heat of the upper heat insulation plate 4 can be taken away by the air flow flowing through the air duct 8, and the width of the air duct 8 is gradually increased from back to front, which is beneficial to increasing the contact area between the air flow in the air duct 8 and the upper heat insulation plate 4, thereby enhancing the heat dissipation effect; the height of the air duct 8 is set to be gradually reduced from back to front, and the reduction of the speed of the air flowing through the air duct 8 due to the overlarge cross section area of the front end of the air duct 8 can be avoided, so that the effect of oil smoke exhaust is avoided being influenced.

Further, as shown in fig. 7, at least three vent holes 601 are formed at the bottom of the exhaust pipe 6, the number of the vent holes 601 may be four, the vent holes 601 are circumferentially distributed around the axis of the exhaust pipe 6, as shown in fig. 8 and 9, a protruding piece 501 is formed at the edge of the exhaust hole 501, the vent holes 601 are respectively disposed corresponding to the positions of the exhaust holes 501, that is, when the number of the vent holes 601 is four, the number of the exhaust holes 501 is correspondingly four, as shown in fig. 6, the protruding piece 501 is inserted into the corresponding vent hole 601, the upper end of the exhaust pipe 6 passes through the circular hole 402, so when the exhaust pipe 6 is installed, the vent holes 601 only need to be aligned with the corresponding protruding piece 501, then the protruding pieces 501 are inserted into the corresponding vent holes 601, then the heat insulation plate 4 is covered, since the upper end of the exhaust pipe 6 is disposed to pass through the circular hole 402, the upper end of the exhaust pipe 6 is connected to the circular hole 402 without requiring a complicated mounting operation when the heat shield plate 4 is attached. The protruding piece 501 can position the exhaust pipe 6, and the exhaust pipe 6 is simple in mounting structure and convenient to mount.

Further, as shown in fig. 4, the left side and the right side of the oven body 5 are respectively provided with a side plate 7, and the side plates 7 are used for enclosing a baking cavity of the oven body 5; the left end and the right end of the upper heat insulation plate 4 are respectively fixedly connected with the corresponding side plates 7 through corresponding screws, specifically, the left end and the right end of the upper heat insulation plate 4 are respectively downwards formed into bending edges, and the screws penetrate through the corresponding bending edges; as shown in fig. 5, the upper heat insulation plate 4 and the top of the oven body 5 are surrounded by the heat insulation cavity 10, so that heat at the top of the oven body 5 is not easily transferred to the upper heat insulation plate 4, that is, heat inside the oven body 5 is prevented from being dissipated, which is beneficial to saving energy of the oven.

Claims (6)

1. An oven negative pressure formula exhaust system, includes oven box (5), and the front portion position at the top of oven box (5) is formed with exhaust hole (501), its characterized in that: the utility model discloses an oven, including oven box (5), exhaust hole (501), blast hole (6), round hole (402), exhaust fan (1), aviation baffle (2), last heat insulating board (4) correspond the top and be equipped with heat insulating board (4), go up heat insulating board (4) and be formed with round hole (402) between the top of oven box (5), exhaust hole (501) pass through blast pipe (6) with round hole (402) switch-on, the upside of going up heat insulating board (4) is equipped with exhaust fan (1) and aviation baffle (2), aviation baffle (2) with it encloses and is equipped with wind channel (8) to go up heat insulating board (4), the front position in wind channel (8) corresponds the front portion of oven box (5), exhaust fan (1) is equipped with air outlet (101), the rear end in wind channel (8) with air outlet (101) are connected, round hole (402) with wind channel (8) switch-on.

2. The oven negative pressure exhaust system of claim 1, wherein: a groove (401) is formed in the upper heat insulation plate (4), and the round hole (402) is formed in the groove (401); still include exhaust baffle (3), exhaust baffle (3) lid is established on recess (401), the front end edge of exhaust baffle (3) with be formed with exhaust seam (9) between the front end edge of recess (401), round hole (402) through exhaust seam (9) with wind channel (8) switch-on.

3. The oven negative pressure exhaust system of claim 2, wherein: the groove (401) is designed to be triangular, the exhaust seam (9) extends along the left-right direction, and the round hole (402) is formed in the rear portion of the groove (401).

4. The oven negative pressure exhaust system of claim 1, wherein: the exhaust fan (1) is a cross-flow fan, the width of the air duct (8) is gradually increased from back to front, and the height of the air duct (8) is gradually decreased from back to front.

5. The oven negative pressure exhaust system of claim 1, wherein: the bottom of blast pipe (6) is formed with at least three air vent (601), air vent (601) are established to the circumference and are distributed, the edge of exhaust hole (501) is formed with lug (501), air vent (601) respectively with exhaust hole (501) position corresponds the setting, lug (501) adaptation cartridge is in corresponding in air vent (601), the upper end of blast pipe (6) passes round hole (402).

6. The oven negative pressure exhaust system of claim 1, wherein: the oven is characterized in that side plates (7) are respectively arranged on the left side and the right side of the oven body (5), the left end and the right end of the upper heat insulation plate (4) are fixedly connected with the corresponding side plates (7) through corresponding screws, and a heat insulation cavity (10) is arranged at the top of the upper heat insulation plate (4) and the top of the oven body (5) in an enclosing manner.

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