CN110754961A - Heat radiation structure for oven - Google Patents
Heat radiation structure for oven Download PDFInfo
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- CN110754961A CN110754961A CN201810849904.XA CN201810849904A CN110754961A CN 110754961 A CN110754961 A CN 110754961A CN 201810849904 A CN201810849904 A CN 201810849904A CN 110754961 A CN110754961 A CN 110754961A
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- air
- wind
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- air inlet
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- 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
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- Food Science & Technology (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a heat dissipation structure for an oven, which comprises an air guide cover which is covered on the top of an oven body of the oven, wherein one end of the air guide cover is an air inlet, the other end of the air guide cover is an air outlet, a flow guide channel is formed between the air inlet and the air outlet, a centrifugal fan assembly is arranged at the air inlet, and an air outlet port of the centrifugal fan assembly is communicated with the air inlet. Compared with the prior art, the centrifugal fan assembly is adopted to provide an air source for the flow guide channel, and compared with the conventional cross-flow fan, the centrifugal fan assembly has the advantages of low noise, difficulty in failure, long service life and capability of ensuring that a user obtains good use experience, and in addition, the air outlet quantity is large, so that a better heat dissipation effect can be obtained.
Description
Technical Field
The invention relates to the field of ovens, in particular to a heat dissipation structure for an oven.
Background
The oven can produce a large amount of heats in the course of the work to generally imbed the oven in cupboard or other structures in kitchen fitment, oven during operation, its surface temperature can exceed 150 ℃, if the heat is piled up inside the oven, not only can accelerate oven circuit and electronic component's ageing speed, shorten the life of oven, can lead to the inner bag of oven to break even, cause the danger.
A conventional oven generally adopts a cross flow fan to radiate heat for devices such as a power panel and the like on the top of the oven, but the cross flow fan has high noise and is easy to break down. Chinese utility model patent like patent No. ZL201120306724.0 (the grant bulletin number is CN202173286U) discloses an electric oven with heat radiation structure, the top of box is provided with the heat dissipation case, and the heat dissipation case has the air outlet that exposes the preceding terminal surface of box, still has the air intake that supplies outside hot-blast entering heat dissipation incasement on the lateral wall of heat dissipation case, and it has the intercommunication to open on the roof of box the wind-guiding mouth of box and heat dissipation case, still install in the heat dissipation case will get into the hot-blast row in the heat dissipation case to the radiator fan of air outlet. The heat radiation fan adopts a cross-flow fan, a flow guide cover is fixed on the top wall of the box body in the patent, the flow guide cover is positioned between the outlet of the heat radiation fan and the air outlet of the heat radiation box, a flow guide channel for communicating the outlet of the heat radiation fan and the air outlet of the heat radiation box is formed between the flow guide cover and the upper surface of the top wall of the box body, and the air guide port is communicated with the flow guide channel.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a heat dissipation structure for an oven, which has low noise, long service life and large air output, in view of the prior art.
The second technical problem to be solved by the present invention is to provide a heat dissipation structure for an oven, which has uniform air outlet, in view of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a heat radiation structure for an oven comprises an air guide cover which is used for covering the top of a box body of the oven, one end of the air guide cover is an air inlet, the other end of the air guide cover is an air outlet, a flow guide channel is formed between the air inlet and the air outlet, and the heat radiation structure is characterized in that a centrifugal fan component is arranged at the air inlet, and an air outlet port of the centrifugal fan component is communicated with the air inlet.
Preferably, the centrifugal fan assembly comprises a volute casing cover and an impeller, the volute casing cover is used for covering the top of the oven body, an air outlet port of the volute casing cover is connected with an air inlet end of the air guide cover, the impeller is eccentrically arranged in the volute casing cover, and a circular air inlet port which is concentric with the impeller is formed in the top surface of the volute casing cover. Wherein the impeller sets up in the volute casing cover eccentrically to enable to form great clearance between one side of impeller and volute casing cover, can accumulate more air in this clearance, when the impeller rotated, the air in the clearance can flow out along the tangential direction of impeller, thereby can further increase centrifugal fan subassembly's air output.
In order to facilitate the installation of the motor, the centrifugal fan assembly further comprises a motor and a mounting bracket, the mounting bracket is erected on the air inlet port, and the motor is installed on the mounting bracket.
Furthermore, the mounting bracket is a plate and comprises a central tray for mounting the motor and support arms, the support arms are formed by horizontally extending outwards the lateral edges of the central tray, at least two support arms are arranged at intervals along the circumferential direction of the central tray, the central tray is positioned at the circle center of the air inlet port in the mounting state, and the free ends of the support arms correspond to the top surface of the volute casing cover respectively. On the basis of being convenient for the motor installation, the normal air inlet of the air inlet port is ensured, and meanwhile, the heat dissipation of the motor is also facilitated.
Because the air outlet mode of the centrifugal fan is different from that of the cross-flow fan, the air outlet is uneven by adopting the traditional air guide cover, and further the heat dissipation effect is influenced, the width of the air guide cover is gradually increased from the air inlet to the air outlet, the height of the air guide cover is gradually increased from the air inlet to the air outlet, an air guide auxiliary channel extending from the air inlet to the air outlet is arranged at the end of the air inlet of the air guide cover, the air guide auxiliary channel is formed by upward bulging of the cover wall of the air guide cover, and the air guide auxiliary channel is contracted from the air inlet to the air outlet. After the airflow flowing out from the air outlet port is guided into the air guide auxiliary channel, because the air guide auxiliary channel is contracted from the air inlet to the air outlet direction, part of the airflow guided into the air guide auxiliary channel is guided to the other side of the air guide cover, and the airflow can be relatively uniformly distributed on the rear half part of the air guide cover and uniformly flows to the front half part of the air guide cover, so that a better heat dissipation effect is obtained.
Furthermore, the air guide auxiliary channel is uniformly contracted from the air inlet to the air outlet, so that the air flow entering the air guide auxiliary channel can uniformly flow to the other side of the flow guide channel.
Furthermore, in order to enable the airflow entering from the air inlet to be more uniformly distributed in the air guide cover, the widths of all the air guide auxiliary channels are close, and the heights of the air guide auxiliary channels are uniformly decreased gradually from the air inlet to the air outlet, so that the airflow can uniformly flow to the other side of the air guide cover.
The air flows out from the air outlet port along the tangential direction of the impeller, and in order to enable the air flow to better flow into the air guide auxiliary channel, the track of the air guide auxiliary channel from the air inlet to the air outlet direction is matched with the motion track of the air inlet flow of the air inlet, so that the air flow can smoothly flow into the air guide auxiliary channel, and the turbulent flow caused by the collision of the air flow and the side wall of the air guide auxiliary channel is effectively avoided.
Preferably, the air guiding cover is provided with an installation position for installing the power panel at the air outlet end. Furthermore, the mounting position is arranged between the air guide auxiliary channel and the air outlet and is positioned in the middle of the air guide cover where the mounting position is positioned along the width direction, and the mounting position is formed by protruding the cover wall of the air guide cover upwards from the rear half part of the air guide cover, so that airflow entering from the air guide auxiliary channel is uniformly distributed on the rear half part of the air guide cover and then can continuously and uniformly flow to the front half part of the air guide cover, and therefore the power panel mounted in the mounting position can be radiated and then protected.
Compared with the prior art, the invention has the advantages that: the air inlet of the air guide cover is provided with the centrifugal fan assembly, and the air outlet of the centrifugal fan assembly is communicated with the air inlet of the air guide cover. Adopt centrifugal fan subassembly to provide the wind regime for the water conservancy diversion passageway, compare with current cross-flow fan, the noise is little, is difficult to break down, and long service life can make the user obtain good use and experience, and in addition, the air output is big to can obtain better radiating effect.
Drawings
FIG. 1 is a schematic structural view of an oven according to an embodiment of the present invention;
FIG. 2 is a schematic view of a partial structure of an oven according to an embodiment of the present invention;
FIG. 3 is a sectional view showing a partial structure of an oven according to an embodiment of the present invention;
FIG. 4 is an exploded view of a partial structure of an oven according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a mounting bracket according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of the volute casing and the wind scooper according to the embodiment of the present invention;
FIG. 7 is a schematic view of the structure of FIG. 6 in another orientation;
FIG. 8 is a schematic view of the structure of FIG. 6 in yet another orientation;
FIG. 9 is a cross-sectional view taken along A-A of FIG. 6;
FIG. 10 is a simulation diagram of an air field without an auxiliary air guide passage;
FIG. 11 is a gas field simulation diagram in an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 9, an upper mounting plate 11 is provided on the top of a box body 1 of an oven, and a heat dissipation structure 2 capable of dissipating heat from devices such as a power board on the top of the oven is provided on the upper mounting plate 11. The heat dissipation structure 2 comprises an air guide cover 3 and a centrifugal fan assembly 4. The wind scooper 3 is covered on the upper mounting plate 11, one end thereof is an air inlet 31, the other end thereof is an air outlet 32, and a flow guiding channel 30 for passing the air flow is formed between the air inlet 31 and the air outlet 32. The centrifugal fan assembly 4 is disposed at the air inlet 31, and an air outlet 412 of the centrifugal fan assembly 4 is communicated with the air inlet 31. Adopt centrifugal fan to provide the wind regime for water conservancy diversion passageway 30, compare with current cross-flow fan, the noise is little, is difficult for breaking down, and long service life can make the user obtain good use and experience, and in addition, the intake is also big, can obtain good radiating effect.
The centrifugal fan assembly 4 includes a volute casing 41, an impeller 42, a motor 43, and a mounting bracket 44, wherein the volute casing 41 is disc-shaped and covers the upper mounting plate 11, the impeller 42 is eccentrically disposed in an inner cavity of the volute casing 41 (as shown by a dotted line in fig. 6), and an air inlet port 411 is formed on a top surface of the volute casing 41, the air inlet port 411 is circular and concentric with the impeller 42, so as to provide a wind source for the impeller 42, that is, the air inlet port 411 is also eccentrically disposed on the top surface of the volute casing 41. The side surface of the volute casing cover 41 is tangentially provided with the air outlet 412, the air outlet 412 is communicated with a larger gap of the volute casing cover 41, so that centrifugal airflow generated by rotation of the impeller 42 can be smoothly guided out from the air outlet 412 to enter the air guide cover 3, and the impeller 42 is eccentrically arranged, so that more air is accumulated in the larger gap of the volute casing cover 41, more airflow can enter the air guide cover 3, the air inlet amount of the air guide cover 3 is effectively increased, and a better heat dissipation effect is obtained.
In this embodiment, the width of the wind scooper 3 increases gradually from the wind inlet 31 to the wind outlet 32, and the height decreases gradually from the wind inlet 31 to the wind outlet 32, that is, the airflow slowly decelerates after entering the flow guiding channel 30, and then is guided out from the wind outlet 32. Since the air flows out from the air outlet 412 along the tangential direction of the impeller 42, if the air flow is not guided, most of the air flows through the air inlet 31 and flows on one side of the air guiding cover 3, and the other side is relatively small, so that the effect of uniform heat dissipation cannot be achieved. In order to make the airflow entering from the air inlet 31 relatively uniformly distributed in the rear half 36 of the wind scooper 3 (i.e. the wind guiding channel 30), the front-back direction of the wind scooper 5 in this embodiment is referred to by the operator, and the same is applied below. In this embodiment, the wind guiding cover 3 is provided with a wind guiding auxiliary channel 33 at the end of the wind inlet 31, the wind guiding auxiliary channel 33 extends from the wind inlet 31 to the wind outlet 32, the wind guiding auxiliary channel 33 is formed by the upward bulge of the cover wall of the wind guiding cover 3, and the wind guiding auxiliary channel 33 is contracted from the wind inlet 31 to the wind outlet 32. After the airflow flowing out from the air outlet 412 is guided into the air guide auxiliary channel 33, because the air guide auxiliary channel 33 is contracted from the air inlet 31 to the air outlet 32, part of the airflow guided into the air guide auxiliary channel 33 is guided to the other side of the air guide cover 3 or two sides of the air guide auxiliary channel 33 (when the air guide auxiliary channel 33 is arranged on one side of the air guide cover, the airflow is guided to the other side of the air guide cover 3, and when the air guide auxiliary channel 33 is arranged in the middle of the air guide cover, the airflow is guided to two sides of the air guide auxiliary channel 33), so that the airflow can be relatively uniformly distributed on the rear half part 36 of the air guide cover 3 and uniformly flows to the front half part 35 of the air guide cover 3, and a better heat dissipation effect is obtained, as shown by arrows in fig. 6.
The purpose of arranging the air guide cover in the oven is that the air outlet uniformity at the front end of the oven is better through the air guide cover, so that heat on the mounting plate on the oven is taken away, and the effect of dissipating heat of the oven is achieved. In the wind scooper of fig. 10, the wind guide auxiliary duct 33 is not provided, and it is seen that the uniformity of the wind outlet is poor, and most of the wind volume is concentrated on one side of the wind scooper and the other side is small. Fig. 11 is a simulation diagram of the present embodiment after the air guide auxiliary duct is provided, and as can be seen from fig. 11, the air guide auxiliary duct 33 is provided, so that the uniformity of the air outlet is greatly improved, and thus, the air guide auxiliary duct 33 has a good flow guiding effect, so that the uniformity of the air outlet of the air guide cover 3 is good.
In order to make the airflow entering from the air inlet 31 more uniformly distributed in the air guiding channel 3, the air guiding auxiliary channel 33 is uniformly contracted from the air inlet 31 to the air outlet 32, further, the width of each part of the air guiding auxiliary channel 33 is close, and the height of the air guiding auxiliary channel 33 is uniformly decreased from the air inlet 31 to the air outlet 32, so that the airflow can uniformly flow to the other side of the air guiding cover 3 or two sides of the air guiding auxiliary channel 33. The air flows out from the air outlet 412 along the tangential direction of the impeller 42, and in order to make the air flow into the air guiding auxiliary channel 33 better, the extending track of the air guiding auxiliary channel 33 from the air inlet 31 to the air outlet 32 direction matches with the movement track of the air inlet flow of the air inlet 31, so that the air flow can flow into the air guiding auxiliary channel 33 smoothly, and the turbulence caused by the collision of the air flow and the side wall of the air guiding auxiliary channel 33 is effectively avoided.
In order to make the airflow in the volute casing 41 enter the wind scooper 3 better, preferably, the outlet of the volute casing 41 (i.e. the wind outlet 412) is connected to the end of the wind inlet 31, further, in this embodiment, the volute casing 41 and the wind scooper 3 are an integral component, and the wind outlet 412 of the volute casing 41 is overlapped with the wind inlet 31 of the wind scooper 3 to form an integral structure, further, the top surface of the volute casing 41 and the top surface of the wind guide auxiliary channel 33 form a smooth transition, i.e. the overlapping position of the wind outlet 412 and the wind inlet 31 is smooth, further, in this application, the first side wall 361 of the rear half 36 of the wind scooper 3 is shared with the wind guide auxiliary channel 33, i.e. the wind guide auxiliary channel 33 is disposed on one side of the wind scooper 3, and the included angle α between the second side wall 362 of the rear half 36 and the side wall of the wind guide auxiliary channel 33 opposite to the second side wall 362 is 53 °, so that the airflow entering the wind guide auxiliary channel 33 can flow to the other side wall 30 more uniformly and the wind outlet β of the wind guide channel 32, and the second side wall 342 is adjacent to the wind scooper 32.
Further, the wind scooper 3 is provided with an installation site 34 for installing a power supply board at the end of the wind outlet 32, specifically, the installation site 34 is arranged between the wind guide auxiliary channel 33 and the wind outlet 32, is located in the middle of the wind scooper 3 in the width direction, and is formed by upward protruding of the cover wall of the wind scooper 3. Thus, the airflow entering from the air guiding auxiliary channel 33 is uniformly distributed on the rear half part 36 of the air guiding cover 3 and then can continuously and uniformly flow to the front half part 35 of the air guiding cover 3, so that the power panel installed in the installation position 34 can be radiated and protected.
The mounting bracket 44 is mounted on the air inlet 411, and the motor 43 is mounted on the mounting bracket 44. Specifically, the mounting bracket 44 is a plate member, and includes a central tray 441 for mounting the motor 43, and at least two support arms 442 extending horizontally outward from a side edge of the central tray 441, the support arms 442 being spaced circumferentially along the central tray 441, wherein in the mounted state, the central tray 441 is located at the center of the air inlet port 411, and free ends of the support arms 442 are located at corresponding positions on the top surface of the volute housing 41. To stabilize the mounting bracket 44, an upwardly extending reinforcing flange 443 is formed on the outer edge of the mounting bracket 44. In this embodiment, the central tray 441 is circular, the number of the support arms 442 is three, the included angle between adjacent support arms 442 is 120 °, each support arm 442 is fixed to the top surface of the volute housing 41 by a screw (not shown), and the air inlet port 411 is eccentrically formed on the top surface of the volute housing 41, so that a fracture is formed at the free end of one support arm 442, and the support arm 442 is prevented from protruding out of the volute housing 41 to affect the installation. The center of the center tray 441 is provided with a mounting hole 444 for passing through the rotating shaft of the motor 43. The installation of motor 43 is not only made things convenient for in the setting of installing support 44, and the electrical connector that makes things convenient for motor 43 in addition is connected with the power strip for mounting panel 11 simple structure on the oven, the assembly nature of oven complete machine is stronger.
Claims (10)
1. The utility model provides a heat radiation structure for oven, is including being used for covering wind scooper (3) of establishing at the box (1) top of oven, and the one end of this wind scooper (3) is air intake (31) and the other end is air outlet (32), forms water conservancy diversion passageway (30) between this air intake (31) and air outlet (32), characterized in that, air intake (31) department is provided with centrifugal fan subassembly (4), and air-out port (412) of this centrifugal fan subassembly (4) communicate with each other with above-mentioned air intake (31).
2. The heat dissipation structure of claim 1, wherein the centrifugal fan assembly (4) comprises a volute casing (41) and an impeller (42) for covering the top of the oven body (1), an air outlet port (412) of the volute casing (41) is connected with an air inlet (31) end of the air guide casing (3), the impeller (42) is eccentrically arranged in the volute casing (41), and a circular air inlet port (411) concentrically arranged with the impeller (42) is formed on the top surface of the volute casing (41).
3. The heat dissipating structure of claim 2, wherein the centrifugal fan assembly (4) further comprises a motor (43) and a mounting bracket (44), the mounting bracket (44) being mounted on the air inlet port (411), and the motor (43) being mounted on the mounting bracket (44).
4. A heat dissipating structure according to claim 3, wherein the mounting bracket (44) is a plate member including a center tray (441) for mounting the motor (43) and support arms (442), the support arms (442) being formed by extending a side edge of the center tray (441) horizontally outward, the support arms (442) being at least two and being provided at intervals along a circumferential direction of the center tray (441), the center tray (441) being located at a center of the air inlet port (411) in a mounted state, and free ends of the support arms (442) being located at respective corresponding positions on a top surface of the volute housing (41).
5. The heat dissipation structure of any one of claims 1 to 4, wherein the width of the wind scooper (3) increases gradually from the wind inlet (31) to the wind outlet (32), and the height decreases gradually from the wind inlet (31) to the wind outlet (32), and a wind guiding auxiliary channel (33) extending from the wind inlet (31) to the wind outlet (32) is disposed at the wind inlet (31) end of the wind scooper (3), the wind guiding auxiliary channel (33) is formed by upward bulging of the cover wall of the wind scooper (3), and the wind guiding auxiliary channel (33) is shrunk from the wind inlet (31) to the wind outlet (32).
6. The heat dissipation structure of claim 5, wherein the air guide auxiliary channel (33) is uniformly contracted from the air inlet (31) to the air outlet (32).
7. The heat dissipation structure of claim 6, wherein the width of each part of the air guide auxiliary channel (33) is close, and the height of the air guide auxiliary channel (33) is uniformly decreased from the air inlet (31) to the air outlet (32).
8. The heat dissipation structure of claim 7, wherein the trajectory of the air guide auxiliary channel (33) from the air inlet (31) to the air outlet (32) matches the movement trajectory of the intake airflow of the air inlet (31).
9. The heat dissipation structure of claim 5, wherein the wind scooper (3) is provided with a mounting location (34) for mounting a power board at the wind outlet (32) end.
10. The heat dissipation structure of claim 9, wherein the mounting location (34) is disposed between the air guide duct (33) and the air outlet (32), and the mounting location (34) is located in a middle portion of the air guide cover (3) in a width direction and is formed by upward protruding of a cover wall of the air guide cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810849904.XA CN110754961A (en) | 2018-07-28 | 2018-07-28 | Heat radiation structure for oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810849904.XA CN110754961A (en) | 2018-07-28 | 2018-07-28 | Heat radiation structure for oven |
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| Publication Number | Publication Date |
|---|---|
| CN110754961A true CN110754961A (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810849904.XA Pending CN110754961A (en) | 2018-07-28 | 2018-07-28 | Heat radiation structure for oven |
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| CN (1) | CN110754961A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336134A (en) * | 2020-04-14 | 2020-06-26 | 中山市欧博尔电器有限公司 | Fan structure of electric oven |
| CN112535418A (en) * | 2020-12-07 | 2021-03-23 | 广东美的厨房电器制造有限公司 | Cooking utensil |
-
2018
- 2018-07-28 CN CN201810849904.XA patent/CN110754961A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336134A (en) * | 2020-04-14 | 2020-06-26 | 中山市欧博尔电器有限公司 | Fan structure of electric oven |
| CN112535418A (en) * | 2020-12-07 | 2021-03-23 | 广东美的厨房电器制造有限公司 | Cooking utensil |
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