CN215191009U - Oven with illuminating lamp - Google Patents

Abstract

The utility model relates to an oven with light, include: a case in which a cooking chamber is provided; the heat dissipation unit comprises a heat dissipation air duct for introducing external cooling air flow to dissipate heat of the outer wall of the box body; the lighting unit comprises a lighting lamp, the lighting lamp is positioned in the heat dissipation air duct, and light energy generated by the lighting lamp enters the cooking cavity through a light-transmitting window on the wall of the cooking cavity; the light guide assembly comprises a light gathering ring and a light guide column, the light gathering ring is covered outside the illuminating lamp, a first heat dissipation gap for cooling airflow to pass through is formed between the light gathering ring and the illuminating lamp, one end of the light guide column is connected with the light gathering ring, and the other end of the light guide column extends to a light transmission window of the cooking cavity. The whole heat dissipation that can arrange the oven in of light dispels the heat in the wind channel, avoids the light high temperature and shortens life, and the light that the light produced is accessible light guide assembly's spotlight ring and leaded light post projects the culinary art cavity as much as possible again, has guaranteed the illuminating effect of culinary art cavity, has improved user experience.

Description

Oven with illuminating lamp

Technical Field

The utility model relates to an oven technical field especially relates to an oven with light.

Background

The oven is a household appliance for baking food, and a user may need to constantly observe the color, shape, etc. of the food in the oven to determine whether the food is cooked, so that a lighting device needs to be arranged in the oven to facilitate the user to observe the conditions in the oven. The existing lighting devices are usually installed inside the inner container of the oven. The oven can generate high temperature in the working process, so that the lighting device in the oven has higher temperature resistance requirement; no matter how high the temperature resistance of the lighting device is, the lighting device still has the advantages of shortened service life when being in a high-temperature baking environment for a long time, improved use cost of the oven and increased maintenance workload of the oven. In the prior art, the cooling mode for cooling the illuminating lamp basically adopts the mode that radiating fins are arranged near the illuminating lamp or a separate radiating fan is added to achieve the purpose of cooling, but the cooling mode has higher cost.

Therefore, the utility model discloses a chinese utility model patent of application No. CN201720676664.9 (No. CN207768207U) discloses an "oven", which includes a box body and a lighting lamp arranged in the box body, at least one air inlet channel is formed on the box body, which can suck cooling air from the outside of the box body, and at least part of the structure on the lighting lamp is located on the air inlet channel. This design is through being used for carrying out radiating cooling air to the shell of oven, and the heat dissipation is given to the light in the inlet air duct gets into the oven, reduces the temperature of light, avoids the light to be in high temperature environment for a long time, improves the life of light, and the cost is reduced has reduced the work load of maintenance, maintenance.

However, the heat dissipation structure of the lighting lamp in the above patent still has certain deficiency, the lighting lamp in the above patent is only located in the air inlet channel, and the lamp body of the lighting lamp is then stretched into the box body of the oven, so, the cooling airflow in the air inlet channel can only carry out effective heat dissipation to the lamp core of the lighting lamp, and the lamp body still can lead to the problem of higher overall temperature of the lighting lamp because of not being cooled effectively in time, and the service life is influenced, and if the lamp body part of the lighting lamp is also placed in the air inlet channel at the same time, the lighting effect inside the box body is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art's current situation, provide one kind and can wholly carry out effective heat dissipation to the lighting lamp to guarantee the lighting effect's of light to the oven box inside oven that has the light.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: an oven having a light, comprising:

a case in which a cooking chamber is provided;

the heat dissipation unit is arranged on the box body and comprises a heat dissipation air channel for introducing external cooling air flow to dissipate heat of the outer wall of the box body;

the lighting unit is arranged on the box body and comprises a lighting lamp, the lighting lamp is positioned in the heat dissipation air duct, and light energy generated by the lighting lamp enters the cooking cavity through a light-transmitting window correspondingly arranged on the wall of the cooking cavity;

the light guide assembly comprises a light gathering ring and a light guide column, the light gathering ring is correspondingly covered outside the illuminating lamp, a first heat dissipation gap for cooling airflow to pass through is formed between the light gathering ring and the illuminating lamp, one end of the light guide column is connected with the light gathering ring, and the other end of the light guide column extends to a light transmission window of the cooking cavity.

In order to reduce the heat transfer of the cooking chamber to the outer wall of the cabinet and further reduce the temperature of the lighting unit correspondingly mounted on the cabinet, the cabinet includes a mounting plate having an insulating gap with the outer wall of the cooking chamber, and the heat dissipation unit is disposed on the mounting plate.

In order to simplify the structure of the heat dissipation air duct of the heat dissipation unit, the heat dissipation unit comprises a fan and a guide plate, the guide plate is arranged on the outer wall of the mounting plate, a second heat dissipation gap is arranged between the guide plate and the mounting plate, the second heat dissipation gap forms the heat dissipation air duct, and the inlet of the heat dissipation air duct corresponds to the air outlet of the fan.

In order to facilitate installation of the lighting unit and the light guide assembly, the cooking device further comprises a supporting seat arranged on the guide plate, the light gathering ring and the light guide column are arranged on the supporting seat, the supporting seat is further provided with an installation cavity communicated with the heat dissipation air channel, the lighting lamp is arranged in the installation cavity, and the light guide column penetrates through the guide plate and the installation plate and extends to the light transmission window of the cooking cavity.

In order to facilitate the assembly, the overhaul and the replacement of the lighting unit, the mounting cavity of the supporting seat is provided with an opening, the lighting lamp comprises a control panel and LED lamp beads arranged on the control panel, the control panel covers the opening of the mounting cavity and enables the LED lamp beads to face the inside of the mounting cavity, the light condensation ring is arranged on the mounting cavity and correspondingly faces the inner wall surface of the opening, and the light condensation ring covers the outer side of the LED lamp beads and is reserved with a gap between the control panels.

In order to introduce cooling air flow in a heat dissipation air duct into an installation cavity of a support seat so as to effectively dissipate heat of an illumination lamp, a first air inlet and a first air outlet are arranged on a guide plate, a second air inlet communicated with the installation cavity is arranged on the support seat corresponding to the first air inlet, a second air outlet communicated with the installation cavity is arranged on the support seat corresponding to the first air outlet, and a light gathering ring is arranged in a flow path between the second air inlet and the second air outlet.

In order to avoid the local exposure of leaded light post in the heat dissipation wind channel, and cause the light leak problem, influence user experience, set up the confession on the guide plate the first opening that the leaded light post passed, set up the confession corresponding to first opening on the mounting panel the second opening that the leaded light post passed, it establishes to have the cover on the diapire of supporting seat the light screen of the periphery of leaded light post, the light screen extends to at least the second opening position of mounting panel. On the other hand, the light shielding plate has the following functions: the shading plate is arranged on the outer side of the light guide column to play a role in protection, and the light guide column is prevented from being broken due to the fact that the light guide column touches a second opening of the mounting plate after being installed obliquely; in addition, the light screen extends to the position of the second opening of the mounting plate, and can also prevent the heat dissipation airflow from flowing below the mounting plate through the second opening of the mounting plate, so that oil stains in the heat dissipation airflow are prevented from polluting the light guide column, and the illumination effect is influenced.

In another improvement, the first opening has a first flange extending toward the mounting plate, the second opening has a second flange extending toward the baffle, and the second flange and the first flange are overlapped in the relative extending direction and are both located outside the light screen.

As an improvement, the air pressure sensor is arranged for detecting the air pressure in the heat dissipation air duct and is arranged in the mounting cavity and is in signal communication with the control system. A wind pressure sensor for detecting wind pressure is added on a control panel of the illuminating lamp, whether the heat dissipation fan works normally or not can be judged through program processing, when the heat dissipation fan rotates normally, the wind pressure sensor detects the wind pressure, and the sensor transmits a normal signal; when the cooling fan is locked and the heat dissipation of the machine is abnormal, the sensor cannot detect the wind pressure (or the wind pressure is lower than a set value), the wind pressure sensor transmits an abnormal signal, and the machine prompts a fault code.

In order to dissipate heat of the bottom surface of the supporting seat, a third heat dissipation gap is formed between the bottom wall of the supporting seat and the outer wall of the guide plate, and the third heat dissipation gap is communicated with the heat dissipation air duct.

Compared with the prior art, the utility model has the advantages that: the whole heat dissipation wind channel that can arrange the oven in of lighting unit's light dispels the heat, avoids the light high temperature and shortens life, and meanwhile, the light that the light produced can project the culinary art cavity as much as possible through leaded light subassembly's spotlight ring and leaded light post again, has guaranteed the illuminating effect of culinary art cavity, has effectively improved user experience.

Drawings

Fig. 1 is a schematic perspective view of an oven according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of the oven of the embodiment of the present invention without a fan cover plate;

FIG. 3 is a cross-sectional view of an embodiment of the present invention taken along the front-to-back direction of the oven;

FIG. 4 is a cross-sectional view from another perspective of FIG. 3;

FIG. 5 is an enlarged view at A of FIG. 4;

FIG. 6 is a schematic view of the structure of FIG. 5 without the illumination unit and the light guide assembly;

fig. 7 is a schematic perspective view of a light guide assembly according to an embodiment of the present invention;

fig. 8 is a schematic perspective view of another angle of the light guide assembly according to the embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Referring to fig. 1 to 8, an oven with an illumination lamp includes a case 10, a heat dissipation unit, a wind pressure sensor 50, an illumination unit, and a light guide assembly 40.

Referring to fig. 1 and 3, the cabinet 10 is square and has a cooking chamber 11 therein. The cabinet 10 is provided at a front side thereof with a door 15 capable of relatively opening and closing the cooking chamber 11.

Referring to fig. 2 and 3, the heat dissipation unit is disposed on the box 10, and may be specifically located at a top position of the box 10. In this embodiment, a mounting plate 14 is provided on the top wall of the cabinet 10, the mounting plate 14 has an insulating gap 13 with the outer wall of the cooking chamber 11, and the heat radiating unit is provided on the mounting plate 14.

Referring to fig. 3 and 4, the heat dissipating unit includes a fan 21 and a baffle 22. Guide plate 22 is located on the outer wall of mounting panel 14, wherein, has second heat dissipation clearance 23 between guide plate 22 and the mounting panel 14, and this second heat dissipation clearance 23 has constituted including the heat dissipation wind channel that is used for introducing external cooling air current, and the import in heat dissipation wind channel corresponds the linking with air outlet 210 of fan 21, and the inlet scoop 211 of fan 21 sets up. The heat dissipation air duct of this embodiment is a flat air duct formed by the guide plate 22 and the mounting plate 14, and can cover most of the top wall of the box body 10, so as to achieve a greater degree of heat dissipation, as shown in fig. 4. More specifically, the outlet 16 of the heat dissipation duct is located at the front side of the box 10 and is a strip-shaped opening extending transversely, as shown in detail in fig. 3. When the oven works, the fan 21 of the heat dissipation unit is started, and external cooling air is introduced into the heat dissipation air duct, so that heat transferred to the outer wall of the box body 10 from the cooking cavity 11 is taken out, and the situation that the outer wall of the box body 10 is overheated and a user is scalded is avoided.

Referring to fig. 1-3, the mounting plate 14 is further provided with a vertical plate 17 extending vertically upward, and a fan 21 cover plate 18 covering the top of the vertical plate 17 and opposite to the mounting plate 14. Wherein, the vertical plates 17 at least positioned at the rear side and the left and right sides are provided with air passing holes 170.

Referring to fig. 2 and 3, the lighting unit is disposed on the top of the box body 10, and specifically includes a lighting lamp 30, and the lighting lamp 30 is located in the heat dissipation air duct. Wherein, the light generated by the illumination lamp 30 is projected to the light-transmitting window 12 on the wall of the cooking chamber 11 through the light guide assembly 40, and passes through the light-transmitting window 12 to enter the cooking chamber 11, so as to illuminate the inner space of the cooking chamber 11.

Referring to fig. 4 and 5, the lighting lamp 30 of the present embodiment is an LED lamp, and specifically includes a control board 31 and LED lamp beads 32 disposed on the control board 31. The heat dissipation unit of this embodiment can fully dispel the heat to control panel 31 and LED lamp pearl 32.

Referring to fig. 5, the light guide assembly 40 includes a support base 41, a light gathering ring 42, and a light guide column 43. The supporting base 41 is disposed on the outer wall of the guiding plate 22 of the heat dissipating unit, and the light gathering ring 42 and the light guiding column 43 are disposed on the supporting base 41. The supporting seat 41 has an installation cavity 410 communicated with the heat dissipation air duct, wherein the upper portion of the installation cavity 410 has an opening 412, the control board 31 of the lighting lamp 30 can cover the opening 412 of the installation cavity, and the LED lamp beads 32 on the control board 31 face the inside of the installation cavity 410. The light-gathering ring 42 is disposed on the bottom surface of the mounting cavity 410 and faces towards the opening 412 (i.e. towards the LED lamp bead 32 on the control board 31), specifically, the light-gathering ring 42 is an annular cover, which covers the outside of the LED lamp bead 32, a gap is reserved between the outer peripheral edge of the light-gathering ring 42 and the control board 31, and the gap is a first heat dissipation gap 44 for cooling air to flow around the peripheral side of the LED lamp bead 32 and take away heat generated by the LED lamp bead 32. One end of the light guide column 43 is connected to the bottom wall of the support base 41 and connected to the light gathering ring 42, and the other end extends to the light transmission window 12 of the cooking chamber 11 through the guide plate 22 and the mounting plate 14.

Referring to fig. 5 and 6, the baffle 22 has a first air inlet 221 and a first air outlet 222, the support base 41 has a second air inlet 413 corresponding to the first air inlet 221 and communicating with the installation cavity 410, and a second air outlet 414 corresponding to the first air outlet 222 and communicating with the installation cavity 410. The light gathering ring 42 is located in a flow path between the second air inlet 413 and the second air outlet 414, that is, the LED lamp bead 32 is located between the second air inlet 413 and the second air outlet 414.

With reference to fig. 6, the guide plate 22 is provided with a first opening 223 for the light guiding pillar 43 to pass through, the mounting plate 14 is provided with a second opening 140 for the light guiding pillar 43 to pass through corresponding to the first opening 223, the bottom wall of the supporting base 41 is provided with a light shielding plate 415 sleeved on the periphery of the light guiding pillar 43, and the light shielding plate 415 at least extends to the position of the second opening 140 of the mounting plate 14. The light shielding plate 415 is arranged to prevent a light leakage problem (i.e., a user can easily perceive light through the opening of the heat dissipation air duct on the front side of the box 10) caused by the local exposure of the light guiding column 43 in the heat dissipation air duct, so as to affect user experience, and on the other hand, the light shielding plate 415 is arranged on the outer side of the light guiding column 43, so as to protect the light guiding column 43 and prevent the light guiding column 43 from being broken due to the light guiding column 43 being obliquely arranged and then touching the second opening 140 of the mounting plate 14; in addition, the light shielding plate 415 extends to the position of the second opening 140 of the mounting plate 14, and can also block the heat dissipation airflow from flowing to the lower side of the mounting plate 14 through the second opening 140 of the mounting plate 14, so as to prevent oil stains in the heat dissipation airflow from polluting the light guiding column 43, which has an influence on the illumination effect.

In order to make the air flow in the heat dissipation air duct enter the mounting cavity 410 of the support base 41 quickly, the peripheral edge of the first opening 223 has a first flange 224 extending towards the mounting plate 14, the peripheral edge of the second opening 140 has a second flange 141 extending towards the deflector 22, and the second flange 141 and the first flange 224 are overlapped in the opposite extending direction and are both located outside the shading plate 415, as shown in detail in fig. 6. Specifically, the first flange 224 is located outside the second flange 141, and an overflowing gap is further provided between the first flange 224 and the second flange, wherein the first air inlet 221 on the guide plate 22 is disposed on the first flange 224 and faces the incoming flow direction of the cooling air flow in the heat dissipation air duct, the first flange 224 is further provided with an air outlet notch 142, the air outlet notch 142 deviates from the incoming flow direction of the cooling air flow in the heat dissipation air duct, that is, the air outlet notch 142 and the first air inlet 221 are respectively located on two opposite sides of the first flange 224.

Referring to fig. 5, in order to dissipate heat from the bottom surface of the supporting seat, a third heat dissipation gap 45 is formed between the bottom wall of the supporting seat and the outer wall of the air deflector 22, and the third heat dissipation gap 45 is communicated with the heat dissipation air duct. Specifically, the third heat dissipation gap 45 communicates with the first air inlet 221 on the air deflector 22. The cooling air flow in the heat dissipation air duct can be divided into two flows through the first air inlet 221 on the air deflector 22, wherein one flow enters the installation cavity 410 of the support base 41 through the second air inlet 413 of the support base 41 to dissipate heat of the LED lamp bead 32 and the control board 31, and finally returns to the heat dissipation air duct through the second air outlet 414 of the support base 41 and the first air outlet 222 of the air deflector 22, the other flow enters the third heat dissipation gap 45 to dissipate heat of the bottom of the support base 41, and finally returns to the heat dissipation air duct through the flow gap between the first flange 224 and the second flange 141, and the flow path of the air flow is detailed as shown by the arrow in fig. 5. Since there is a gap between the bottom wall of the support seat 41 and the outer wall of the baffle 22, in order to smoothly exhaust the air flow in the installation cavity 410 of the support seat 41, the circumferential edge of the second air outlet 414 is provided with an annular flow guide wall 416, the annular flow guide wall 416 extends to the first air outlet 222 of the baffle 22, and the air flow in the installation cavity 410 can be introduced to the position of the first air outlet 222 of the baffle 22 through the annular flow guide wall 416 and then exhausted.

Referring to fig. 5, the wind pressure sensor 50 of the present embodiment is disposed in the mounting cavity 410 of the supporting base 41, specifically on the control board 31 of the lighting lamp 30, for detecting wind pressure in the heat dissipating air duct, and the wind pressure sensor 50 is in signal communication with the control system. A wind pressure sensor 50 for detecting wind pressure is added on a control panel 31 of the illuminating lamp 30, whether the heat dissipation fan 21 works normally can be judged through program processing, and when the heat dissipation fan 21 rotates normally, the wind pressure sensor 50 detects the wind pressure and can transmit a signal to a control system; when the cooling fan 21 is locked and the heat dissipation of the machine is abnormal, the sensor cannot detect the wind pressure (or the wind pressure is lower than a set value), the wind pressure sensor 50 transmits an abnormal signal to the control system, and the machine prompts a fault code.

The whole heat dissipation wind channel that can arrange the oven in of lighting unit's of this embodiment light 30 dispels the heat, avoids light 30 high temperature and shorten life, and meanwhile, the light that light 30 produced can project cooking cavity 11 as much as possible through light guide assembly 40's spotlight ring 42 and leaded light post 43 again, has guaranteed cooking cavity 11's illuminating effect, has effectively improved user experience.

Claims (10)

1. An oven having a light, comprising:

a cabinet (10) in which a cooking chamber (11) is provided;

the heat dissipation unit is arranged on the box body (10) and comprises a heat dissipation air channel for introducing external cooling air flow to dissipate heat of the outer wall of the box body (10);

the lighting unit is arranged on the box body (10) and comprises a lighting lamp (30), the lighting lamp (30) is positioned in the heat dissipation air channel, and light energy generated by the lighting lamp (30) enters the cooking chamber (11) through a light-transmitting window (12) correspondingly arranged on the wall of the cooking chamber (11);

it is characterized by also comprising:

light guide assembly (40), including spotlight ring (42) and leaded light post (43), spotlight ring (42) are correspondingly covered and are established outside light (30), and with light (30) between have first heat dissipation clearance (44) that supply cooling air current to pass through, the one end of leaded light post (43) with spotlight ring (42) is connected, and the other end extends to the printing opacity window (12) of culinary art cavity (11).

2. The oven with the illumination lamp according to claim 1, wherein: the box body (10) comprises a mounting plate (14), a heat insulation gap (13) is arranged between the mounting plate (14) and the outer wall of the cooking chamber (11), and the heat dissipation unit is arranged on the mounting plate (14).

3. The oven with the illumination lamp according to claim 2, wherein: the heat dissipation unit comprises a fan (21) and a guide plate (22), wherein the guide plate (22) is arranged on the outer wall of the mounting plate (14), a second heat dissipation gap (23) is arranged between the guide plate (22) and the mounting plate (14), the second heat dissipation gap (23) forms a heat dissipation air duct, and an inlet of the heat dissipation air duct corresponds to an air outlet (210) of the fan (21).

4. The oven with the illumination lamp according to claim 3, wherein: still including locating supporting seat (41) on guide plate (22), spotlight ring (42) and leaded light post (43) are all located on supporting seat (41), supporting seat (41) still have with installation cavity (410) that the heat dissipation wind channel is linked together, light (30) are located installation cavity (410) in, leaded light post (43) pass guide plate (22) and mounting panel (14) and extend to light transmission window (12) of culinary art cavity (11).

5. The oven with the illumination lamp according to claim 4, wherein: installation cavity (410) of supporting seat (41) has uncovered (412), light (30) include control panel (31) and locate LED lamp pearl (32) on this control panel (31), control panel (31) lid close the installation cavity uncovered (412) position to make LED lamp pearl (32) towards the inside of installation cavity (410), spotlight ring (42) locate correspond on installation cavity (410) towards on the internal face of uncovered (412), spotlight ring (42) cover is established the outside of LED lamp pearl (32), and with reserve the clearance between control panel (31).

6. The oven with the illumination lamp according to claim 5, wherein: the air guide plate (22) is provided with a first air inlet (221) and a first air outlet (222), a second air inlet (413) communicated with the installation cavity (410) is arranged on the support seat (41) corresponding to the first air inlet (221), a second air outlet (414) communicated with the installation cavity (410) is arranged on the support seat (41) corresponding to the first air outlet (222), and the light gathering ring (42) is located in a flow path between the second air inlet (413) and the second air outlet (414).

7. The oven with the illumination lamp according to claim 4, wherein: offer on guide plate (22) and supply first opening (223) that leaded light post (43) passed, offer corresponding to first opening (223) on mounting panel (14) and supply second opening (140) that leaded light post (43) passed, have the cover on the diapire of supporting seat (41) and establish light screen (415) in the periphery of leaded light post (43), light screen (415) extend to at least the second opening (140) position of mounting panel (14).

8. The oven with the illumination lamp according to claim 7, wherein: the periphery of the first opening (223) is provided with a first flange (224) extending towards the mounting plate (14), the periphery of the second opening (140) is provided with a second flange (141) extending towards the deflector (22), and the second flange (141) and the first flange (224) are overlapped in the opposite extending directions and are both positioned outside the shading plate (415).

9. The oven with the illumination lamp according to claim 4, wherein: the wind pressure sensor (50) is arranged for detecting wind pressure in the heat dissipation air duct, and the wind pressure sensor (50) is arranged in the installation cavity (410) and is communicated with a control system through signals.

10. The oven with illumination lamp according to any one of claims 4 to 9, characterized in that: and a third heat dissipation gap (45) is arranged between the bottom wall of the supporting seat and the outer wall of the guide plate (22), and the third heat dissipation gap (45) is communicated with the heat dissipation air duct.

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