High-temperature protection system, range hood and integrated cooker
By setting up heat dissipation ducts and temperature sensors in the smoke shield and combining them with a flameout protector, the problem of damage to the smoke shield in high temperature environments is solved, and effective cooling and protection of the smoke shield are achieved.
Patent Information
- Application Number
- CN202421428265.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-06-21
AI Technical Summary
Smoke shields are easily damaged in high-temperature environments, especially when equipped with electrical components, as they have poor high-temperature resistance and pose risks of physical structural damage and connection failure.
A high temperature protection system is used, including a heat dissipation duct, a heat dissipation fan, a temperature sensor and a flameout protector, which can reduce the temperature and control the burner fire power to prevent the smoke baffle from overheating.
Effectively reduce the temperature of the smoke shield, avoid physical structure damage and damage to electrical components, and ensure normal operation of the equipment.
Smart Images
Figure CN222881223U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a high temperature protection system, a range hood and an integrated stove, belonging to the technical field of kitchen appliances. Background Art
[0002] The smoke shield is an important part of the range hood. When the range hood is in operation, the smoke shield is located directly above the burner on the stove, which can effectively block the fumes generated during cooking, prevent them from spreading to other areas of the kitchen, and keep the kitchen air clean. When the smoke shield is in operation, it is affected by the high temperature environment during cooking, and there are risks such as physical structural damage and failure of connection parts. In particular, when the smoke shield is equipped with electrical components, the high temperature resistance of the electrical components is poor. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a high temperature protection system, a range hood and an integrated stove to prevent the smoke baffle from being damaged due to high temperature.
[0004] The utility model is realized through the following technical solutions.
[0005] A high temperature protection system comprises a heat dissipation duct arranged inside a smoke shield and a heat dissipation fan arranged in the heat dissipation duct. The heat dissipation duct is formed with at least one heat dissipation through hole on the smoke shield, and the smoke shield is equipped with at least one electrical component.
[0006] As a further improvement of the present invention, the high temperature protection system also includes a first temperature sensing component and a flameout protector. The first temperature sensing component is used to sense the temperature of a first combustion area of the burner. The flameout protector is arranged on the burner to shut down the burner.
[0007] As a further improvement of the present invention, the first temperature sensing component includes a temperature sensing imager and a chip board located in the heat dissipation duct, and the first temperature sensing component has at least one imaging head, and the imaging head passes through the bottom panel of the smoke shield and its imaging range covers the first area.
[0008] As a further improvement of the present invention, the temperature sensing imager is arranged on the bottom panel of the smoke shield, and the chip board is arranged on the top panel of the smoke shield.
[0009] As a further improvement of the present invention, the bottom of the temperature sensing imager has a heat insulation pad attached to the bottom panel.
[0010] As a further improvement of the present invention, the high temperature protection system further includes a second temperature sensing element for sensing the temperature of the bottom panel of the smoke baffle and a second area thereunder.
[0011] As a further improvement of the present invention, the second temperature sensing component is configured as a temperature sensing probe, and the temperature sensing probe penetrates the bottom panel of the smoke baffle.
[0012] As a further improvement of the present invention, the electrical device includes at least one lighting lamp, and the lighting lamp is arranged on the bottom panel of the smoke baffle.
[0013] A range hood comprises a casing with a smoke inlet, a smoke baffle rotatably connected to the smoke inlet, and the high temperature protection system.
[0014] An integrated stove comprises the range hood.
[0015] Beneficial effects of the utility model:
[0016] 1. When the cooling fan is turned on, the cooling air duct can circulate with the outside air, thereby effectively reducing the temperature of the smoke shield, especially the bottom plate of the smoke shield, to prevent the smoke shield from physical structural damage caused by the high temperature environment, connection failure of connecting parts, etc., and also to avoid damage to electrical components;
[0017] 2. By providing the first temperature sensing element and the flameout protector, the burner can be shut down when the combustion area of the burner reaches the limit temperature, thereby avoiding high temperature damage to the smoke baffle caused by the heat radiation of the burner;
[0018] 3. Since the image head needs to pass through the bottom panel of the smoke shield, the temperature sensing imager is arranged on the bottom panel of the smoke shield, and the chip board is arranged on the top panel of the smoke shield, so that the heat dissipation duct plays a role in heat insulation of the chip board, further improving the heat dissipation effect of the chip board;
[0019] 4. Insulate the thermal imager with a thermal insulation pad to further reduce the temperature of the thermal imager. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The following is a detailed description of the preferred implementation examples of the present invention with reference to the accompanying drawings to help understand the purpose and advantages of the present invention, wherein:
[0021] Figure 1 It is a schematic diagram of a range hood and a burner;
[0022] Figure 2 is a schematic diagram of a smoke baffle;
[0023] Figure 3 This is a schematic diagram of the interior of the smoke baffle;
[0024] Figure 4 is a cross-sectional view of a smoke baffle;
[0025] Figure 5 for Figure 4 A partial enlarged schematic diagram of
[0026] Figure 6 A schematic diagram of the burner. DETAILED DESCRIPTION
[0027] The utility model is further described in detail below based on the accompanying drawings and implementation cases.
[0028] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.
[0029] Implementation Case 1:
[0030] A high temperature protection system is used in a range hood. Its main function is to protect the smoke shield 2 from high temperature, thereby preventing the smoke shield 2 from physical structural damage caused by a high temperature environment, connection failure of connecting components, etc., especially electrical components configured on the smoke shield 2 will be damaged in a high temperature environment.
[0031] The high temperature protection system of this embodiment includes a heat dissipation mechanism, a control mechanism and a temperature sensing mechanism, wherein the heat dissipation mechanism is arranged on the smoke baffle 2, and is used to cool and dissipate the smoke baffle 2, and the control mechanism acts on the burner 4 on the stove, and is used to reduce the burning firepower of the burner 4. When the burner 4 is in a burning state, the temperature sensing mechanism is used to monitor the temperature difference ΔT between the first area and the second area, the first area is the burner 4 in the burning area, and the second area is the bottom panel 2a of the smoke baffle 2 and the area below it. The temperature sensing mechanism can give a judgment condition for starting the heat dissipation mechanism or the control mechanism by detecting ΔT, that is, to choose between starting the heat dissipation mechanism and starting the control mechanism, so as to reduce the impact on the smoke baffle 2 in a high temperature environment.
[0032] When the burner 4 is in a burning state, the heat released by its flame not only exchanges heat through direct contact, such as heating the pot, but also affects the outside world through heat radiation, among which the effect on the smoke baffle 2 located above the burner 4 is the most significant. When the pot is placed on the stove, that is, the pot is set on the burner 4, the bottom of the pot will absorb and conduct most of the heat of the flame for cooking, thus reducing the direct upward heat dissipation, resulting in less heat radiation and convection heat received by the smoke baffle 2. When there is no pot, the heat generated by the stove flame is not absorbed, but discharged directly upward. As the first contact component above the heat source, the smoke baffle 2 will receive more direct heat radiation and heat convection, causing its temperature to rise rapidly.
[0033] When there is no pot on the burner 4, the flame of the burner 4 is not blocked by the pot, so the smoke baffle 2 receives more heat radiation and convection heat. Therefore, in this state, the temperature difference between the first area and the second area is relatively small, that is, when the temperature difference ΔT between the first area and the second area is not greater than the preset first temperature difference value, it means that there is no pot on the burner 4. When there is a pot on the burner 4, that is, when the burner 4 is in the cooking state, the smoke baffle 2 receives less heat radiation and convection heat due to the blocking of the pot, and the temperature of the smoke baffle 2 is basically caused by the heat of the pot itself and the oil smoke. Therefore, in this state, the temperature difference between the first area and the second area is relatively large, that is, when the temperature difference ΔT between the first area and the second area is greater than the first temperature difference value, it means that there is a pot on the burner 4. It should be noted that the temperature of the cookware gradually increases as cooking progresses, so the temperature of the smoke shield 2 also gradually increases as cooking progresses. Therefore, if ΔT is greater than the preset first temperature difference value and not greater than the preset second temperature difference value, it means that the cookware is in the cooking state and the smoke shield 2 needs to be cooled down. If ΔT is greater than the second temperature difference value, it means that the cookware is in the cooking state and it is the early stage of cooking, and the smoke shield 2 does not need to be cooled down.
[0034] In addition, the first temperature difference value and the second temperature difference value need to be set according to actual application conditions and are not fixed value data.
[0035] Based on this, in the present embodiment, if ΔT is not greater than the first temperature difference value, that is, there is no pot on the burner 4, the control mechanism is started to reduce the combustion power of the burner 4, on the one hand to avoid the waste of combustion when the burner 4 is in an empty burning state, on the other hand to avoid the high temperature damage of the smoke baffle 2 caused by heat radiation; if ΔT is greater than the first temperature difference value and not greater than the second temperature difference value, the heat dissipation mechanism is started to cool and dissipate the heat of the smoke baffle 2, which will not affect the normal cooking of the pot, and can avoid damage caused by excessive temperature of the smoke baffle 2; if ΔT is greater than the second temperature difference value, the heat dissipation mechanism and the control mechanism are not started.
[0036] In this embodiment, the temperature sensing mechanism includes a first temperature sensing element 31 and a second temperature sensing element 32, wherein the first temperature sensing element 31 is used to sense the temperature T1 of the first area where the burner 4 burns, and the second temperature sensing element 32 is used to sense the temperature T2 of the second area below the bottom panel 2a of the smoke baffle 2. By providing the first temperature sensing element 31 and the second temperature sensing element 32, not only the temperature difference ΔT between the first area and the second area can be detected in real time, but also the temperature T1 of the first area and the temperature T2 of the second area can be accurately detected.
[0037] As for the control mechanism, in this embodiment, the control mechanism includes a gas on-off valve 43, the burner 4 is connected with a main gas shunt pipe 41 and a secondary gas shunt pipe 42, and the gas on-off valve 43 connects the main gas shunt pipe 41 and the secondary gas shunt pipe 42, and is used to cut off the gas supply from the secondary gas shunt pipe 42 to the burner 4. When the main gas shunt pipe 41 and the secondary gas shunt pipe 42 simultaneously provide gas supply to the burner 4, the outer ring fire and the inner ring fire of the burner 4 are simultaneously turned on, that is, the burner 4 is in a high-fire combustion state, and when the gas supply of the secondary gas shunt pipe 42 is cut off by the gas on-off valve 43, the burner 4 only turns on the inner ring fire, that is, the burner 4 is in a low-fire combustion state.
[0038] In this embodiment, when ΔT is not greater than the first temperature difference, that is, there is no pot on the burner 4, the burner 4 is in an empty burning state. The first area and the second area both have extreme temperature thresholds, and when T1 is not greater than the temperature threshold of the first area and T2 is not greater than the temperature threshold of the second area, the gas on-off valve 43 is activated to cut off the gas secondary shunt pipe 42 from delivering gas to the burner 4 to reduce the firepower of the burner 4, while the burner 4 remains in a burning state, so that the user needs to re-ignite when placing the pot on the burner 4 for cooking.
[0039] The control mechanism further includes a flameout protector 44 , which is disposed on the burner 4 and is used to shut down the burner 4 . The burner 4 can be directly and forcibly shut down by the flameout protector 44 to stop its combustion state.
[0040] In this embodiment, when ΔT is not greater than the first temperature difference value, that is, there is no pot on the burner 4, the burner 4 is in an empty burning state, and T1 is greater than the temperature threshold of the first area or / and T2 is greater than the temperature threshold of the second area, the flameout protector 44 is activated and the burner 4 is turned off to avoid high temperature damage.
[0041] In this embodiment, the heat dissipation mechanism includes a heat dissipation duct 21 and a heat dissipation fan 22, wherein the heat dissipation duct 21 is formed inside the smoke shield 2, and the heat dissipation fan 22 is arranged in the heat dissipation duct 21. The heat dissipation duct 21 is formed with at least one heat dissipation through hole 23 on the smoke shield 2. When the heat dissipation fan 22 is turned on, the heat dissipation duct 21 can circulate with the outside air, thereby effectively reducing the temperature of the smoke shield 2, especially the bottom panel 2a of the smoke shield 2, avoiding the physical structure damage of the smoke shield 2 caused by the high temperature environment, the connection failure of the connecting components, etc., and also avoiding damage to electrical components.
[0042] In this embodiment, the first temperature sensing element 31 includes a temperature sensing imager 311 and a chip board 312 located in the heat dissipation duct 21. The first temperature sensing element 31 has at least one image head 313. The image head 313 passes through the bottom panel 2a of the smoke baffle 2 and its image range covers the first area. The temperature sensing imager 311 is a camera with a thermal imaging function, also known as an infrared thermal imager. Its working principle is based on infrared thermal radiation technology and is used to capture and display the temperature distribution image of the target object. The temperature sensing imager 311 can better adapt to the application requirements of detecting the temperature of the first area. Under normal circumstances, the number of image heads 313 is matched with the number of burners 4 on the stove, and the first area of each burner 4 is covered by an image head 313 alone.
[0043] In this embodiment, since the imaging head 313 needs to pass through the bottom panel 2a of the smoke shield 2, the temperature sensing imager 311 is arranged on the bottom panel 2a of the smoke shield 2, and the chip board 312 is arranged on the top panel 2b of the smoke shield 2, so that the heat dissipation duct 21 plays a role in insulating the air of the chip board 312, further improving the heat dissipation effect of the chip board 312.
[0044] In this embodiment, the bottom of the temperature sensor 311 has a heat insulating pad 314 attached to the bottom panel 2a. The heat insulating pad 314 is used to insulate the temperature sensor 311 to further reduce the temperature of the temperature sensor 311. The heat insulating pad 314 can be made of insulating glass or other insulating materials.
[0045] In this embodiment, the second temperature sensing element 32 is configured as a temperature sensing probe, which is located in the heat dissipation duct 21 and passes through the bottom panel 2a of the smoke baffle 2. The temperature sensing probe passing through the bottom panel 2a can better detect the temperature of the second area.
[0046] In the present embodiment, at least one lighting lamp 5 is provided on the bottom panel 2a of the smoke shield 2. The lighting lamp 5, the first temperature sensing element 31 and the second temperature sensing element 32 are all electrical components arranged on the smoke shield 2. The high temperature protection system of the present embodiment reduces the temperature of the smoke shield 2 by reducing the firepower of the burner 4 or by cooling and dissipating heat, thereby avoiding damage to these electrical components due to excessively high temperature environment.
[0047] Implementation Case 2:
[0048] A range hood includes a housing 1, a smoke shield 2, and a high temperature protection system. The high temperature protection system is as shown in Example 1, wherein the housing 1 has a smoke inlet 11, the smoke shield 2 is in a horizontal state in a working state, and in a non-working state, the smoke shield 2 is turned over to cover the smoke inlet 11.
[0049] Implementation Case 3:
[0050] An integrated stove includes a range hood, and the range hood is shown in Implementation Case 2.
[0051] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the above implementation cases, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above implementation cases, or replace some of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the implementation cases of the utility model.
Claims
1. A high temperature protection system, characterized in that: The invention comprises a heat dissipation duct arranged inside a smoke shield and a heat dissipation fan arranged in the heat dissipation duct. The heat dissipation duct is formed with at least one heat dissipation through hole on the smoke shield. The smoke shield is provided with at least one electrical device.
2. The high temperature protection system according to claim 1, characterized in that: The high temperature protection system further comprises a first temperature sensing element and a flameout protector. The first temperature sensing element is used to sense the temperature of a first combustion area of the burner. The flameout protector is arranged on the burner and is used to shut down the burner.
3. The high temperature protection system according to claim 2, characterized in that: The first temperature sensing component includes a temperature sensing imager and a chip board located in the heat dissipation duct. The first temperature sensing component has at least one imaging head, which passes through the bottom panel of the smoke baffle and its imaging range covers the first area.
4. The high temperature protection system according to claim 3, characterized in that: The temperature sensing imager is arranged on the bottom panel of the smoke shield, and the chip board is arranged on the top panel of the smoke shield.
5. The high temperature protection system according to claim 4, characterized in that: The bottom of the temperature sensing imager is provided with a heat insulation pad attached to the bottom panel.
6. The high temperature protection system according to claim 1, characterized in that: The high temperature protection system further includes a second temperature sensing element for sensing the temperature of the bottom panel of the smoke baffle and a second area thereunder.
7. The high temperature protection system according to claim 6, characterized in that: The second temperature sensing component is configured as a temperature sensing probe, and the temperature sensing probe penetrates the bottom panel of the smoke baffle.
8. The high temperature protection system according to claim 1, characterized in that: The electrical device includes at least one lighting lamp, and the lighting lamp is arranged on the bottom panel of the smoke baffle.
9. A range hood, characterized in that: The invention comprises a casing with a smoke inlet, a smoke baffle rotatably connected to the smoke inlet, and the high temperature protection system according to any one of claims 1 to 8.
10. An integrated stove, characterized in that: Including the range hood as described in claim 9.