Heat dissipation mechanism, infrared heating module and barbecue oven

Abstract

The utility model relates to a kind of food oven and its components or accessories, especially a heat dissipation mechanism, infrared heating module and barbecue oven. Including structural assembly and centrifugal fan;The structural assembly is structured as the space of the back side of reflector hood is separated into first space and second space along heat conduction direction, and in the first space, first air inlet channel located in middle part and first air outlet channel and second air outlet channel located in both sides are structured;The centrifugal fan is set to make the two axial air inlet surfaces of the centrifugal fan correspond the first air inlet channel and second space respectively;And the horizontal radial both sides of the centrifugal fan correspond the first air outlet channel and second air outlet channel respectively. Through structural assembly, the space behind reflector hood is isolated along heat radiation direction, avoid the heat of reflector hood directly conduction to shell, reduce shell temperature, and simultaneously, through centrifugal fan in middle part, heat is dissipated to both sides air outlet channel, shorten the path of heat dissipation airflow, improve heat dissipation efficiency.

Description

Technical Field

[0001] This utility model relates to a food oven and its components or accessories, particularly a heat dissipation mechanism, an infrared heating module, and a barbecue oven. Background Technology

[0002] A barbecue grill that uses an infrared heating element as a heat source is a common type of electric barbecue grill. When current passes through the resistance wire inside the infrared heating element, the resistance effect converts electrical energy into heat energy, causing the surface temperature of the heating element to rise rapidly. The heating element radiates energy outward in the form of electromagnetic waves. This heating mode is generally called thermal radiation heating, with infrared rays as the main wavelength. Using infrared rays for directional and concentrated irradiation can act on the food to create a grilling state.

[0003] To direct infrared radiation, existing infrared heating elements are generally equipped with reflectors. The reflector reflects the infrared radiation toward the direction to be heated. During use, the reflector typically reflects most of the infrared radiation, while absorbing a small amount itself. At the same time, the air inside the reflector is heated and conducted to the reflector. The combination of these factors causes the temperature inside and on the back of the reflector to rise rapidly and heat to accumulate. Under these conditions, the reflective layer on the reflector is prone to attenuation of its reflective efficiency at high temperatures. Simultaneously, the temperature of the casing near the reflector also becomes high, which can easily cause nearby objects to melt, devices to be damaged, or people to be injured during use. Utility Model Content

[0004] In one aspect, embodiments of the present invention provide a heat dissipation mechanism to solve the problem that heat from the reflector portion of existing barbecue grills is conducted in large quantities from the back side to the outer shell, causing the outer shell to reach high temperatures.

[0005] The heat dissipation mechanism is located on the back side of the reflector and includes structural components and a centrifugal fan; The structural component is configured to divide the space on the back side of the reflector into a first space and a second space along the heat conduction direction, and to construct a first air inlet channel in the middle and a first air outlet channel and a second air outlet channel on both sides in the first space. The centrifugal fan is configured such that its two axial air inlet surfaces correspond to the first air inlet channel and the second space, respectively; and the two horizontal radial sides of the centrifugal fan correspond to the first air outlet channel and the second air outlet channel, respectively.

[0006] Because of the above structure, the heat dissipation mechanism of this application embodiment isolates the space behind the reflector along the direction of heat radiation through structural components, preventing the heat of the reflector from being directly conducted to the shell, reducing the shell temperature, and ensuring that people or objects near the outside of the shell do not come into contact with the high-temperature area during use. At the same time, the centrifugal fan in the middle dissipates heat to the air outlet channels on both sides, shortening the exhaust path of the heat dissipation airflow and improving the heat dissipation efficiency.

[0007] In one possible implementation, the structural component includes a heating unit outer frame, the heating unit outer frame having a vertical baffle separating the first space and the second space, an upper baffle enclosing the upper part of the first space and a lower baffle closing the first air outlet channel and the second air outlet channel, the lower baffle having an air inlet at the middle of the first air inlet channel.

[0008] In one possible implementation, the structural component further includes a first air duct isolation plate and a second air duct isolation plate disposed on both sides of the first air inlet channel.

[0009] In one possible implementation, the structural component further includes a first converging baffle disposed in the first air outlet channel and a second converging baffle disposed in the second air outlet channel, wherein the first converging baffle and the second converging baffle are configured to extend obliquely from the inner lower side to the outer upper side.

[0010] In one possible implementation, a side fixing plate is provided below the first and second busbars near the reflector side edge on the corresponding side.

[0011] In one possible implementation, the centrifugal fan includes a fan casing, a fan cover plate, and fan blades; In one possible implementation, the fan housing and fan cover are configured such that, when closed, the vertical end faces corresponding to the radial direction of the fan blades are closed, the horizontal end faces are open, and the end faces corresponding to the axial direction of the fan blades have air inlets.

[0012] In one possible implementation, air guide strips are provided on the inner side of the fan housing.

[0013] Secondly, embodiments of this application also provide an infrared heating module, including a reflector, the back side of which is provided with the heat dissipation mechanism described in the first aspect.

[0014] Thirdly, embodiments of this application also provide a barbecue grill, including a housing and an infrared heating module disposed within the housing, wherein a heat dissipation mechanism of the infrared heating module is disposed between the reflector and the housing. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of one angle of the first embodiment; Figure 2 This is a three-dimensional structural diagram of the first embodiment from another angle; Figure 3 This is a schematic diagram of the air intake path in the first embodiment; Figure 4 This is a schematic diagram of the air outlet path in the first embodiment; Figure 5 This is a schematic diagram of the centrifugal fan structure in the first embodiment; Figure 6 This is a schematic diagram of the internal structure of the centrifugal fan casing in the first embodiment; Figure 7 This is a schematic diagram of the inner view structure of the infrared heating module in the second embodiment; Figure 8 This is a schematic diagram of the infrared heating module from the back side of the second embodiment. Figure 9 This is a schematic diagram of the shell structure of the barbecue grill in the third embodiment; Figure 10 This is a schematic diagram of the internal heat dissipation mechanism of the barbecue grill in the third embodiment. Detailed Implementation

[0016] The following detailed description, in conjunction with specific embodiments and accompanying drawings, clarifies that the described embodiments are only a portion, not all, of the embodiments. All other embodiments obtained by those skilled in the art based on the following embodiments without inventive effort are also within the scope of protection of this utility model.

[0017] The disclosure of the embodiments provides many different implementations or examples for different solutions to implement this utility model. To simplify the disclosure of this utility model, the components and arrangements of specific examples are described in the embodiments. Of course, these are merely examples and are not intended to limit the utility model. Furthermore, reference numerals and / or reference letters may be repeated in different examples in the embodiments; this repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed. In addition, if examples of various specific processes and materials are provided in the embodiments, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0018] The first embodiment provides a heat dissipation structure for heat dissipation of the heating module of a barbecue grill, especially a barbecue grill that uses an infrared heating tube as a heat source. Such a barbecue grill generally includes a shell and one or more heating modules disposed within the shell. Each heating module includes at least one infrared heating tube. A reflector is provided behind the infrared heating tube to reflect the infrared rays emitted by the infrared heating tube in the direction of heating. In addition to reflecting most of the infrared rays, the reflector also absorbs some heat. At this time, the temperature of the reflector itself will gradually rise, and the heat of the reflector will be conducted to the shell on the back side through the air, causing the temperature of the shell behind the reflector to rise rapidly and reach a high temperature state. This can easily cause burns when people touch the shell or damage to items placed near the high-temperature shell, such as plastic items melting at high temperatures, posing a safety hazard.

[0019] like Figures 1-4 As shown, the heat dissipation mechanism of this embodiment includes a structural component 1 and a centrifugal fan 2. The centrifugal fan 2 is used to draw in ambient temperature air and discharge hot air after heat exchange with the reflector. The structural component 1 is used to construct the air inlet and exhaust channels and to install the centrifugal fan 2. The centrifugal fan is a type of fan structure whose air inlet and outlet directions differ from those of an axial flow fan. The working principle of the centrifugal fan is to draw in air axially and discharge it radially. By guiding the airflow radially and combining it with the arrangement of the air ducts, the airflow can be effectively used to discharge hot air from the space behind the reflector, achieving the purpose of heat dissipation.

[0020] Based on the air inlet and outlet directions of the centrifugal fan 2, in this embodiment, as... Figure 3 As shown, the structural component 1 is configured to divide the space on the back side of the reflector into a first space 3 and a second space 4 along the heat conduction direction, and to construct a first air inlet channel 301 located in the middle and a first air outlet channel 302 and a second air outlet channel 303 located on both sides in the first space 3.

[0021] The first space 3 is the space formed by the structural component 1 and the back of the reflector, and the second space 4 is the space formed by the structural component 1 and the outer shell of the barbecue grill. When the reflector heats up, the heat on the back of the reflector is conducted from the first space 3 to the second space 4. In terms of distance and contact with the heat source, the first space 3 is the space that is close to the heat source and in direct contact with the heat source, while the second space 4 is the space that is far from the heat source and is separated by the structural component 1. At the same time, the second space 4 is the space that is close to the shell. Therefore, after the heat in the first space 3 is discharged in time by the heat dissipation airflow in the airflow channel, the second space 4 can always maintain a low temperature, thereby keeping the shell at a low temperature and achieving the purpose of avoiding the shell temperature from getting too high.

[0022] To achieve the construction of the aforementioned first space 3 and second space 4, as well as the first air inlet channel 301 and the first air outlet channel 302 and second air outlet channel 303 located on both sides, as follows: Figure 2 As shown, the structural component 1 in this embodiment includes a heating unit outer frame 101. The heating unit outer frame 101 has a vertical baffle 102 that longitudinally separates the first space 3 and the second space 4, an upper baffle 103 that encloses the upper part of the first space 3, and a lower baffle 104 that closes the first air outlet channel 302 and the second air outlet channel 303. The lower baffle 104 has an air inlet 105 in the middle corresponding to the first air inlet channel 301. The vertical baffle 102 has a fan mounting position 106 in the middle.

[0023] Meanwhile, the structural component 1 also includes a first air duct isolation plate 107 and a second air duct isolation plate 108 disposed on both sides of the fan mounting position 106. The first air duct isolation plate 107 and the second air duct isolation plate 108 isolate the first space 3 into three parts. The three parts are respectively formed by the first air inlet channel 301 between the first air duct isolation plate 107 and the second air duct isolation plate 108, the first air outlet channel 302 on the outside of the first air duct isolation plate 107, and the second air outlet channel 303 on the outside of the second air duct isolation plate 108. After the centrifugal fan 2 is installed at the fan mounting position 106 in the middle of the outer frame 101 of the heating unit, the centrifugal fan 2 draws air from the first air inlet channel 302 and the second space 4, and draws air out from the first air outlet channel 302 and the second air outlet channel 303 to exhaust the heat therein to achieve cooling. At the same time, it continuously draws in room temperature airflow from the second space 4 to keep the temperature in the second space 4 at a low temperature level.

[0024] Preferably, in this embodiment, in order to discharge the heat dissipation airflow in the first air outlet channel 302 and the second air outlet channel 303 to the outside from a set position, the structural component further includes a first converging baffle 109 disposed in the first air outlet channel and a second converging baffle 110 disposed in the second air outlet channel. The first converging baffle 109 and the second converging baffle 110 are configured to extend obliquely from the lower inside to the upper outside, so as to form a first air outlet 111 and a second air outlet 112 located on both sides of the structural component 1.

[0025] During operation, the centrifugal fan 2 draws in ambient temperature air from the first air inlet channel 301 and the second space 4. The drawn-in ambient temperature air mixes with the high-temperature air behind the reflector in the first air outlet channel 302 and the second air outlet channel 303, and is then blown out from the first air outlet 111 and the second air outlet 112 to dissipate heat from the reflector. In this embodiment, the heat dissipation structure isolates the space behind the reflector through structural components, preventing the heat from the reflector from being directly conducted to the housing, thus reducing the housing temperature. During use, people or objects near the outside of the housing do not come into contact with the high-temperature area. At the same time, the centrifugal fan 2 in the middle dissipates heat to the air outlet channels on both sides, shortening the exhaust path of the heat dissipation airflow and improving the heat dissipation efficiency.

[0026] Optionally, in this embodiment, a first side fixing plate 113 and a second side fixing plate 114 are provided below the first busbar 109 and the second busbar 110 near the reflector side edge on the corresponding side. The upper parts of the first side fixing plate 113 and the second side fixing plate 114 abut against the first busbar 109 and the second busbar 110 respectively to support the installation of the first busbar 109 and the second busbar 110, while forming closed surfaces on both sides of the structural component.

[0027] To accommodate the air duct arrangement of the aforementioned structural component 1, in this embodiment, as follows: Figure 5 and Figure 6 As shown, the centrifugal fan 2 includes a fan housing 201, a fan cover plate 202, and fan blades 203. A motor is installed at the shaft of the fan blades 203 (not shown in the figure). During installation, the fan blades 203 are connected to the motor and installed on the fan housing 201. The fan cover plate 202 is installed on the fan housing 201 and fixed by the fastening position 204. After fixing, the fan housing 201 and the fan cover plate 202 are configured to have a housing structure in which the vertical two ends of the fan blades 203 are closed in the radial direction and the horizontal two ends are open after being closed, and the two ends of the fan blades 203 have air inlets in the axial direction.

[0028] In order to match the airflow direction setting of the centrifugal fan in this embodiment, which discharges air from both sides in the horizontal direction, the fan housing 201 is provided with air guide strips 205 inside. While guiding the airflow to the open surfaces on both sides of the centrifugal fan for discharge, the air guide strips 205 also form a closed structure on the upper and lower end faces of the centrifugal fan.

[0029] The second embodiment provides an infrared heating module based on the first embodiment, for use in food heating and processing equipment, such as a barbecue grill. The infrared heating module of this embodiment has functional components for heating and heat dissipation. The heating component generates heat and reflects infrared rays through a reflector to achieve directional heating, while the heat dissipation component dissipates heat from the back of the reflector.

[0030] like Figure 7 and Figure 8 As shown, the infrared heating module of this embodiment includes a heating component and a heat dissipation mechanism. The heating component a includes a reflector a1. The reflective direction of the reflector a1 is used to install light-emitting components and other structural components. The heat dissipation mechanism as described in the first embodiment is installed on the back side of the reflector a1. The heat dissipation mechanism includes structural components and structural arrangements as described in the first embodiment. The structural component 1 and the centrifugal fan 2 are installed on the back side of the reflector a1 for heat dissipation of the heat generated on the back of the infrared heating module when it is working.

[0031] The third embodiment further provides a barbecue grill based on the first and second embodiments described above. This embodiment mainly focuses on explaining the structure and principle of one heating element and its corresponding heat dissipation mechanism within the barbecue grill. Figure 9 and Figure 10 The diagram shows a partial structure of the barbecue grill. The infrared heating module from the second embodiment is installed inside the grill's housing b. Housing b includes a side housing b1 and a bottom housing b2. The heating module a has a reflector a1. The side housing b1 is located on the back side of the reflective surface of the reflector a1, and part of the bottom housing b2 is located at the bottom of the reflector a1. After the infrared heating module is installed inside the barbecue grill, the structural component 1 in the heat dissipation mechanism spatially isolates the reflector a1, the side housing b1, and part of the bottom housing b2, and constructs the air inlet and outlet ducts. The centrifugal fan is used for air inlet and outlet. With proper control, while dissipating heat, the heat absorbed by the reflector a1 is conducted to the shell b through the air in the space on the back side, especially to the side shell b1. This is because the back side area of ​​the reflector a1 corresponding to the side shell b1 is larger, and the side shell b1 is more easily touched by nearby people or objects. Therefore, through the arrangement of structural component 1 and centrifugal fan 2, most of the heat can be discharged to the outside of the barbecue oven in a timely manner in the space close to the reflector a1, so that the side shell b1 receives less heat conduction. At the same time, with the continuous intake of room temperature air, the side shell b1 is always kept at a safe temperature.

[0032] The above description is only a preferred embodiment of the present utility model and does not limit the scope of disclosure of the present utility model. Any equivalent structural or procedural transformations made based on the description and drawings of the embodiments of the present utility model, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection supported by the embodiments of the present utility model.

Claims

1. A heat dissipation mechanism, characterized in that, Located on the back side of the reflector, it includes structural components and a centrifugal fan; The structural component is configured to divide the space on the back side of the reflector into a first space and a second space along the heat conduction direction, and to construct a first air inlet channel in the middle and a first air outlet channel and a second air outlet channel on both sides in the first space. The centrifugal fan is configured such that its two axial air inlet surfaces correspond to the first air inlet channel and the second space, respectively; and the two horizontal radial sides of the centrifugal fan correspond to the first air outlet channel and the second air outlet channel, respectively.

2. The heat dissipating mechanism of claim 1, wherein, The structural component includes a heating unit outer frame, which has a vertical baffle separating the first space and the second space, an upper baffle enclosing the upper part of the first space, and a lower baffle sealing the first air outlet channel and the second air outlet channel. The lower baffle has an air inlet in the middle corresponding to the first air inlet channel.

3. The heat dissipating mechanism of claim 2, wherein, The structural components also include a first air duct isolation plate and a second air duct isolation plate disposed on both sides of the first air inlet channel.

4. The heat dissipating mechanism of claim 2, wherein, The structural component also includes a first converging baffle disposed in the first air outlet channel and a second converging baffle disposed in the second air outlet channel. The first converging baffle and the second converging baffle are configured to extend obliquely from the inner lower side to the outer upper side.

5. The heat dissipating mechanism of claim 4, wherein, A side fixing plate is provided below the first and second busbars near the reflector side edge on the corresponding side.

6. The heat dissipating mechanism of claim 1, wherein, The centrifugal fan includes a fan casing, a fan cover plate, and fan blades.

7. The heat dissipating mechanism of claim 6, wherein, The fan casing and fan cover are configured such that, when closed, the vertical two ends corresponding to the radial direction of the fan blades are closed and the horizontal two ends are open, and the two ends corresponding to the axial direction of the fan blades have air inlets.

8. The heat dissipation mechanism as described in claim 6, characterized in that, The fan casing is equipped with air guide strips on the inner side.

9. An infrared heating module, characterized by It includes a reflector, the back side of which is provided with a heat dissipation mechanism as described in any one of claims 1-8.

10. A barbecue grill characterized by, It includes a housing and an infrared heating module as described in claim 9 disposed within the housing, wherein the heat dissipation mechanism of the infrared heating module is disposed between the reflector and the housing.

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