CN211509319U

CN211509319U - Heating tube and cooking utensil of convenient assembly

Info

Publication number: CN211509319U
Application number: CN202020028696.XU
Authority: CN
Inventors: 朱泽春; 吴超; 王卫卫; 刘海亮
Original assignee: Hangzhou Joyoung Household Electrical Appliances Co Ltd
Current assignee: Hangzhou Jiuchuang Home Appliances Co ltd
Priority date: 2020-01-07
Filing date: 2020-01-07
Publication date: 2020-09-15
Anticipated expiration: 2030-01-07

Abstract

The utility model relates to a heating tube of convenient assembly, including container, the flaky heat-generating body of suspension in the container, wear out the power supply portion at container both ends, power supply portion is connected at the both ends of heat-generating body, be equipped with the bump that is used for sign installation direction on the outer wall of container. The utility model provides a technical scheme can be convenient for the heating tube to install in the culinary art intracavity, improves the rate of accuracy and the assembly efficiency of assembly, guarantees the unanimity of cooking equipment's culinary art performance, promotes user's experience and feels. The application also relates to a cooking appliance comprising the heating tube.

Description

Heating tube and cooking utensil of convenient assembly

Technical Field

The utility model relates to a kitchen utensil field particularly, relates to a heating tube and cooking utensil of convenient assembly.

Background

Patent CN101861758A discloses a heat generating tube, which is composed of a heat-resistant glass tube, a heat generating body and a power supply part, wherein the heat generating body is a thin film sheet made of a material containing a carbon-based substance, has two-dimensional isotropic heat conductivity in the plane direction, and can rapidly heat up and efficiently generate heat overall when energized. Therefore, the heating tube is gradually applied to the cooking utensil to replace the existing heating tube with slow heating temperature rise, and further the cooking efficiency of the cooking utensil is improved.

As shown in fig. 1, the heating element has a sheet-like structure and two-dimensional isotropic thermal conductivity in the plane direction, and the heat radiation area of the heating element surface 50 is much larger than that of the heating element surface 60, so that the amount of heat generated from the heating element surface 50 is much larger than that of the heating element surface 60. If the installation directions of the heating tube in the cooking cavity are different, the cooking utensil cooks the same food material by adopting the same process conditions, so that the cooking effect and the cooking efficiency have great difference. In order to ensure the consistency of the cooking performance of the cooking appliance, the installation direction of the heating tube in the oven needs to be determined, but because the heating tube is a circular tube, the installation direction of the heating tube cannot be accurately and quickly determined during installation, so that the installation direction of the heating tube in the cooking cavity cannot be ensured to be consistent during installation and production of the heating tube, and the installation efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a heating tube and cooking utensil of convenient assembly.

The utility model discloses a following technical scheme realizes:

the heating tube convenient to assemble comprises a container, a flaky heating body suspended in the container and power supply parts penetrating out of two ends of the container, wherein the power supply parts are connected with two ends of the heating body, and salient points used for marking the installation direction are arranged on the outer wall of the container.

Furthermore, the salient point is arranged in the middle of the outer wall of the container.

Further, the height of the salient points is 1-5 mm.

Furthermore, two ends of the heating body are respectively provided with a second heating area, and a first heating area with the temperature lower than that of the second heating area is arranged between the second heating areas.

Furthermore, the salient points are arranged on the outer wall of the container corresponding to the first heat-generating area.

Furthermore, a cutting seam is arranged on the first heat-generating area.

Further, the first heat generating area is a conductive part electrically connected with an end part of the second heat generating area.

Further, the heating body comprises a first heating area and at least 2 second heating areas with the temperature lower than that of the first heating area, the first heating area and the second heating areas are alternately arranged in the length direction of the heating body, and the first heating areas are arranged at least at two ends of the heating body.

Further, the length ratio of the second heat-generating area to the first heat-generating area is 0.3-0.55.

In addition, still provide a cooking utensil, include foretell heating tube of convenient assembly.

Compared with the prior art, the beneficial effects of adopting the technical scheme are that:

1. be equipped with the bump that is used for sign installation direction on the outer wall of container, the heating tube of being convenient for is installed in the culinary art intracavity, improves the rate of accuracy and the assembly efficiency of assembly, guarantees cooking utensil's the unanimity of culinary art performance, promotes user's experience and feels.

2. The height of the salient point is 1-5mm, so that the salient point can be conveniently identified in the assembly process of the heating tube, and the heating tube is prevented from being scrapped due to the fact that the salient point is too high and damaged in the processes of carrying, installing and the like.

3. The two ends of the heating body are respectively provided with a second heating area, a first heating area with the temperature lower than that of the second heating area is arranged between the second heating areas, so that the heat radiation energy distribution of the food material placing area is further optimized, the heat concentration of the central area of the food material placing area is avoided, and the temperature distribution of the food material placing area is more uniform.

4. The salient points are arranged on the outer wall of the container corresponding to the first heating area, so that shielding of the salient points on heat radiation of the heating tube is reduced, and heating influence of the salient points on the heating tube is reduced.

5. The first heating area is provided with the cutting seams, so that the temperature of the first heating area can be adjusted, and the first heating area is matched with the second heating area, so that the heat radiation energy distribution of the food material placing area is further optimized, the heat concentration of the central area of the food material placing area is avoided, and the temperature distribution of the food material placing area is more uniform.

6. The first heating area is a conductive part electrically connected with the end part of the second heating area, so that the heat radiation energy distribution of the food material placing area is optimized, the heat concentration of the central area of the food material placing area is avoided, and the temperature distribution of the food material placing area is more uniform. Meanwhile, the heating body is arranged in a segmented mode, so that the phenomenon that the heating body sags due to softening and under the action of gravity of the heating body can be avoided in the long-term use process of the heating body, and the reliability of the heating tube is improved. In addition, the tensile strength of the heating element is enhanced, and the rejection rate of the heating element during installation is reduced.

7. The heating body comprises a first heating area and at least 2 second heating areas with the temperature lower than that of the first heating area, the first heating area and the second heating areas are alternately arranged in the length direction of the heating body, the first heating areas are arranged at the two ends of the heating body, and the alternating high-temperature area and the alternating low-temperature area are arranged on the heating body, so that the local heat concentration in the cooking cavity is avoided, the temperature in the cooking cavity tends to be uniform, and the food is uniformly heated.

Drawings

The invention is described in further detail below with reference to the accompanying drawings:

FIG. 1 is a schematic view of heat radiation from a heat generating tube in a cooking chamber;

FIG. 2 is a schematic view of a heating tube according to the first embodiment;

FIG. 3 is a schematic view showing a structure of a heat-generating body according to the first embodiment;

FIG. 4 is an enlarged view of A in FIG. 2;

FIG. 5 is a schematic view showing a structure of a heating element according to a second embodiment;

FIG. 6 is a schematic view showing a structure of a heating element of a third embodiment;

FIG. 7 is a schematic structural view of another embodiment of a heat-generating body of the third embodiment;

FIG. 8 is a schematic structural view of a heating element according to still another embodiment of the third embodiment;

FIG. 9 is a schematic structural view of a cooking appliance according to a fourth embodiment;

FIG. 10 is a sectional view of a cooking chamber of the fourth embodiment;

the corresponding reference numbers for the component names in the figures are as follows:

100. a cooking appliance; 10. a heat generating tube; 11. a heating element; 113. a first heat-generating zone; 114. a second heat generation region; 115. a wide part; 116. a narrow secondary portion; 117. cutting a seam; 12. a power supply unit; 121. a holder; 122. a support member; 123. an inner lead; 124. a molybdenum foil; 125. an external lead; 13. a container; 14. salient points 20 and a cooking cavity; 21. a food material placement area; 22. an upper wall; 23. a transition section; 24. a rear wall; 25 lower wall; 30. a display control panel; 40. a toaster door; 50. a surface of the heater; 60. the surface of the heating element.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and specific embodiments.

Example one

As shown in fig. 2 to 4, the utility model provides a heating tube 10 of convenient assembly, including container 13, the flaky heat-generating body 11 of suspension in container 13, wear out the power supply portion 12 at container 13 both ends, power supply portion 12 is connected at the both ends of heat-generating body 11, be equipped with the bump 14 that is used for sign installation direction on container 13's the outer wall, the heating tube 10 of being convenient for is installed in culinary art chamber 20, improves the rate of accuracy and the assembly efficiency of assembly, guarantees cooking utensil's the unanimity of culinary art performance, promotes user's experience and feels.

In this embodiment, the second heat generating regions 114 are provided at both ends of the heat generating body 11, a first heat-generating area 113 with the temperature lower than that of the second heat-generating area 114 is arranged between the second heat-generating areas 114, wherein the heating element 11 comprises a wide part 115 and a narrow sub-part 116, the wide part 115 and the narrow sub-part 116 are alternately arranged in the longitudinal direction of the heating element 11, the middle position of the wide width part 115 is provided with a slit 117, the width W1 of the narrow sub part of the first heating area 113 is larger than the width W2 of the narrow sub part of the second heating area 114, the size of the slit 117 on the first heating area 113 is smaller than that of the slit 117 on the second heating area 114, so that the temperature of the first heating area 113 can be adjusted, and cooperate with the second heating area 114, optimize the heat radiation energy distribution of the food material placing area 21, avoid the heat concentration of the central area of the food material placing area 21, and make the temperature distribution of the food material placing area 21 more uniform.

In the present embodiment, the ratio of the width W1 of the narrow sub-portion 116 of the first heat generation region 113 to the width W2 of the narrow sub-portion 116 of the second heat generation region 114 is: 4.5W2 is not less than W1 is not less than 5.5W 2.

In the present embodiment, the length ratio of the slits 117 of the first heat generating region 113 to the slits 117 of the second heat generating region 114 is 0.12 to 0.2.

It can also be understood that the first heat-generating region 113 is a graphite sheet that is not processed by laser, so that the electrical resistance of the first heat-generating region 113 is small, the amount of heat radiation generated by the first heat-generating region 113 is far lower than that generated by the second heat-generating region 114, and the amount of heat radiation generated by the first heat-generating region 113 is almost negligible, thereby avoiding the heat concentration at the central portion of the cooking cavity 20, forming a high temperature region, and causing food at the central portion of the cooking cavity 20 to be scorched.

In the present embodiment, the length ratio of the first heat generating region 113 to the second heat generating region 114 is 0.3 to 0.55; preferably, the length ratio of the first heat generating region 113 to the second heat generating region 114 is 0.33-0.45.

In the embodiment, the height of the bump 14 is 1-5mm, which is convenient for the heating tube 10 to identify the bump 14 in the assembling process, and prevents the bump 14 from being too high and causing damage in the processes of carrying, mounting and the like, which results in the rejection of the heating tube 10.

In the present embodiment, the bumps 14 are provided on the outer wall of the container corresponding to the first heat-generating region 113, so that shielding of the heat radiation of the heat-generating tube 10 by the bumps 14 is reduced, and the heat-generating influence of the bumps 14 on the heat-generating tube 10 is reduced.

It will be appreciated that the bumps 14 are provided during the forming of the container 13; the protruding points 14 may also be provided during the manufacturing process of the heating tube 10, specifically, the middle portion of the container 13 is provided with an air duct communicated with the inside of the container 13, after the heating body 11, the power supply portion 12 and the container 13 are assembled, two ends of the container 13 are melted and sealed, the container 13 is vacuumized and filled with inert gas through the air duct, and then the air duct is fused and sealed to the container 13, so that the protruding points 14 are formed on the outer wall of the container 13.

In the present embodiment, the heating element 11 is in the form of a thin film sheet mainly composed of a carbon-based substance and having two-dimensional isotropic thermal conductivity in the plane direction, and has flexibility, flexibility and elasticity, and the heat conductivity of the heating element is 200W/(m · K) and the thickness is 300 μm or less, and it is understood that the thickness of the heating element may be 100 μm, 150 μm, 200 μm, 250 μm, or the like; the heating element 11 is a graphite sheet, and the graphite sheet has processability and designability so as to realize the temperature range adjustment on the heating tube 10; preferably, the heating element 11 is a graphite sheet.

The graphite flake is obtained by performing high-temperature heat treatment on a polymer film or a polymer film added with 0.2-20 wt% of a filler, and the preparation method of the graphite flake adopts a conventional preparation method of the graphite flake in the field.

In the present embodiment, the power supply unit 12 includes a holder 121 attached to both ends of the heating element, a supporter 122, an inner lead 123, molybdenum foils 124, and outer leads 125, the holder 121 fixes the inner lead 123, the inner lead 123 is electrically connected to the outer leads 125 led out from both ends of the container 13 to the outside of the container through the molybdenum foils 124 embedded in both end sealing portions of the container 13, the supporter 122 is provided on the inner lead 123, and the supporter 122 is a coil support frame.

It is understood that the material of the holder 121, the supporter 122, the inner lead 123 and the outer lead 125 is molybdenum metal.

It will be understood that the container 13 is closed or not. The container is not closed under the relatively low-temperature use environment below 800 ℃, so that the influence on the service life of the heating tube is small; preferably, the container 13 is closed.

In the present embodiment, both ends of the container 13 are melted into a flat plate shape, and an inert gas, which is a mixed gas of argon, nitrogen, argon and xenon, or argon and krypton, is filled inside the container to prevent oxidation of the heating element; the container 13 is made of a heat-resistant material, such as quartz glass, soda-lime glass, boric acid glass, lead glass and other glass materials; preferably, the container is a quartz glass tube.

It is to be understood that, in the present embodiment, the wide width portion 115 and the narrow width portion 116 are formed by laser cutting the heat-generating body 11. Specifically, the heating element 11 is processed by pulse laser to obtain a desired shape, wherein, for the cutting seam with the cutting seam width of more than 80 μm, the wavelength of 1064nm is selected for processing, and as the laser under the wavelength belongs to thermal processing, the melting, ablation and evaporation are generated on the surface of the material, so that the complete ablation at the cutting seam is realized, and the processing quality of the heating element is improved; selecting short wavelength laser with wavelength of 532nm or 355nm for cutting slit with width below 80 μm; wherein, the heating element is cut and processed by adopting the pulse frequency of 20kHz, the pulse width of 70ns, the power of 30W and the cutting speed of 100mm/s, so that the heating element 11 is ensured to be cut and formed at one time, repeated cutting is avoided, and the processing efficiency and the precision are improved.

Example two

As shown in fig. 5, the second embodiment of the present invention is different from the first embodiment in that in the second embodiment, the first heat-generating region 113 is a conductive portion electrically connected to an end portion of the second heat-generating region 114. The conductive part is a molybdenum rod, the molybdenum rod is fixedly and electrically connected with the end of the second heat generating region 114 through the holding member 121, and the molybdenum rod has a small resistance, so that the temperature of the first heat generating region 113 is lower than that of the second heat generating region 114. In addition, the molybdenum rods are arranged in the longitudinal direction of the heating element 11, and the heating element 11 is arranged in segments, so that the heating element 11 can be prevented from softening and sagging under the action of gravity of the heating element 11 during long-term use of the heating element 11, and the reliability of the heating tube 10 is improved.

The molybdenum rod is provided with a support member 122, so that the heating element 11 can be further stably absorbed by stress and diffused by heat under the condition of thermal stress, the position change of the heating element 11 in the container 13 is prevented, and the reliability of the heating tube 10 is improved.

Other structures and effects of the parts not described are the same as those of the embodiment, and are not described in detail here.

EXAMPLE III

As shown in fig. 6, the third embodiment of the present invention is different from the first embodiment in that, in the third embodiment, the heating element 11 includes a first heating region 113 and at least 2 second heating regions 114 having a temperature lower than that of the first heating region 113, the first heating region 113 and the second heating regions 114 are alternately arranged in the length direction of the heating element 11, and at least two ends of the heating element 11 are provided with the first heating region 113, wherein the first heating region 113 includes a wide portion 115 and a narrow sub-portion 116, the wide portion 115 and the narrow sub-portion 116 are alternately arranged in the length direction of the first heating region 113, a slit 117 is provided in the middle of the wide portion 115, the second heating region 114 is a graphite sheet which is not subjected to laser processing, so that the resistance of the second heating region is small, and the temperature of the second heating region 114 is lower than that of the first heating region 113, and by providing alternately high portions, low portions, and low portions on the heating element 11, A low temperature region to avoid local heat concentration in the cooking cavity 20, so that the temperature in the cooking cavity 20 tends to be uniform, thereby realizing more uniform heating of food.

In the present embodiment, the length ratio of the second heat generation region 114 to the first heat generation region 113 is 0.3 to 0.55; preferably, the length ratio of the second heat generating region 114 to the first heat generating region 113 is 0.33-0.45.

In the present embodiment, the ratio of the length of the two adjacent first heat-generating regions 113 on the heat-generating body to the length of the heat-generating body is 0.2 to 0.6.

It can also be understood that, as shown in fig. 7, the second heat-generating region 114 is provided with a cutting slot, so that the temperature of the second heat-generating region 114 can be adjusted, and the second heat-generating region is matched with the first heat-generating region 113, thereby better optimizing the temperature in the cooking cavity 20, making the temperature in the cooking cavity 20 more uniform, making food heated more uniformly, improving the cooking effect of the cooking appliance and improving the use experience of the user.

It can also be understood that, as shown in fig. 8, the second heat generating region 114 is an electrically conductive part electrically connected to the end of the first heat generating region 113, the electrically conductive part is a molybdenum rod, the molybdenum rod is electrically connected to the end of the first heat generating region 113 by the holding member 121, and the molybdenum rod has a small electrical resistance, so that the temperature of the second heat generating region 114 is lower than the temperature of the first heat generating region 113. In addition, the molybdenum rods are arranged in the longitudinal direction of the heating element 11, and the heating element 11 is arranged in segments, so that the heating element 11 can be prevented from softening and sagging under the action of gravity of the heating element 11 during long-term use of the heating element 11, and the reliability of the heating tube 10 is improved. The molybdenum rod is provided with a support member 121, so that the heating element 11 can be further stably absorbed by stress and diffused by heat under the condition of thermal stress, the position change of the heating element 11 in the container 13 is prevented, and the reliability of the heating tube 10 is improved.

Other structures and effects of the parts not described are the same as those of the first embodiment, and are not described in detail here.

Example four

As shown in fig. 9, the present embodiment also provides a cooking appliance 100 using the heat generating tube 10 as described above which is easy to assemble.

In the present embodiment, the heating tube 10 is installed on the upper portion of the cooking cavity 20, so that the infrared rays emitted from the heating tube 20 can effectively penetrate into the food, and the shielding of other components in the cooking cavity 20 from the infrared rays is reduced, thereby improving the cooking efficiency.

In the present embodiment, the cooking cavity 20 has a square structure, which is common in the field of oven technology; it can also be understood that a transition portion 23 is respectively disposed between the upper wall 22 and the rear wall 24 of the cooking cavity 20 and between the rear wall 24 and the lower wall 25, so as to increase the volume of the cooking cavity 20 and avoid the excessive temperature inside the cooking cavity 20 from burning the food, as shown in fig. 10.

In addition to the preferred embodiments described above, other embodiments of the present invention are also possible, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope of the present invention defined by the appended claims.

Claims

1. The heating tube convenient to assemble comprises a container, a flaky heating body suspended in the container and power supply parts penetrating out of two ends of the container, wherein the two ends of the heating body are connected with the power supply parts.

2. An easily assembled heat generating tube as set forth in claim 1, wherein said projection is provided at a middle portion of the outer wall of the container.

3. An easily assembled heat generating tube as set forth in claim 1, wherein the height of the convex point is 1-5 mm.

4. A heating tube easy to assemble as set forth in any one of claims 1 to 3, wherein second heating regions are provided at both ends of the heating body, respectively, and a first heating region having a temperature lower than that of the second heating region is provided between the second heating regions.

5. An easily assembled heat generating tube according to claim 4, wherein the projection is provided on the outer wall of the container corresponding to the first heat generating region.

6. An easily assembled heat pipe according to claim 4, wherein the first heat generation region is provided with slits.

7. An easily assembled heat generating tube according to claim 4, wherein the first heat generating region is a conductive portion electrically connected to an end portion of the second heat generating region.

8. A heat generating tube easy to assemble as set forth in any one of claims 1 to 3, wherein the heat generating body includes a first heat generating region and at least 2 second heat generating regions having a temperature lower than that of the first heat generating region, the first heat generating region and the second heat generating regions are alternately arranged in a length direction of the heat generating body, and the first heat generating regions are provided at least at both ends of the heat generating body.

9. A heat generating tube easy to assemble as set forth in claim 8, wherein the ratio of the length of the second heat generating region to the first heat generating region is 0.3-0.55.

10. A cooking appliance comprising the heat generating tube of any one of claims 1 to 9 which is easy to assemble.