CN212788241U - Temperature sensing device for heating container - Google Patents
Temperature sensing device for heating container Download PDFInfo
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- CN212788241U CN212788241U CN202021519561.XU CN202021519561U CN212788241U CN 212788241 U CN212788241 U CN 212788241U CN 202021519561 U CN202021519561 U CN 202021519561U CN 212788241 U CN212788241 U CN 212788241U
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- heating
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- container
- heat
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 168
- 239000011521 glass Substances 0.000 claims abstract description 158
- 238000005485 electric heating Methods 0.000 claims description 73
- 229910052751 metal Inorganic materials 0.000 claims description 55
- 239000002184 metal Substances 0.000 claims description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 27
- 229910052782 aluminium Inorganic materials 0.000 claims description 26
- 239000010410 layer Substances 0.000 claims description 18
- 239000000758 substrate Substances 0.000 claims description 18
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- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 238000009713 electroplating Methods 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000012546 transfer Methods 0.000 abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 11
- 239000000741 silica gel Substances 0.000 description 10
- 229910002027 silica gel Inorganic materials 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000009835 boiling Methods 0.000 description 6
- 239000008267 milk Substances 0.000 description 6
- 210000004080 milk Anatomy 0.000 description 6
- 235000013336 milk Nutrition 0.000 description 6
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- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 241000190070 Sarracenia purpurea Species 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
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Images
Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/21—Water-boiling vessels, e.g. kettles
- A47J27/21008—Water-boiling vessels, e.g. kettles electrically heated
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/21—Water-boiling vessels, e.g. kettles
- A47J27/21166—Constructional details or accessories
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
- A47J36/04—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay the materials being non-metallic
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/001—General methods for coating; Devices therefor
- C03C17/003—General methods for coating; Devices therefor for hollow ware, e.g. containers
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/06—Surface treatment of glass, not in the form of fibres or filaments, by coating with metals
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2218/00—Methods for coating glass
- C03C2218/10—Deposition methods
- C03C2218/17—Deposition methods from a solid phase
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Cookers (AREA)
Abstract
The utility model relates to a temperature sensing device of heating vessel, its characterized in that: the heating device comprises a base used for bearing a heating container, wherein a temperature sensor in contact with the outer wall surface of the heating container is arranged on the side part of the base. The utility model discloses glass heating vessel's theory of operation, through set up the temperature sensor with the outer wall contact of heating vessel on the lateral part of base, thereby need not to set up the temperature sensor on the surface of base with the contact of heating vessel bottom surface, can provide bigger contact for the heat conduction surface, the area of heat conduction, heat transfer efficiency is improved, the temperature sensor does not set up the position that is close to with the source of generating heat (or electric heat-generating body) simultaneously, and set up the lateral part at the base that is higher than the heating vessel bottom surface, make the temperature that detects heating vessel and its internal liquid more accurate.
Description
The technical field is as follows:
the utility model relates to a temperature sensing device of heating container, its mainly used glass cup or stainless steel cup carry out accurate temperature sensing, and specially adapted uses heating element and cup that heating tube or PTC, thick film, electric pottery stove etc. are the heating element of heating source to use on the product of components of a whole that can function independently design, for example transfer the milk ware, keep fit kettle, electric kettle, boil products such as tea set.
Background art:
the temperature sensing devices of the milk adjusting device, the health preserving kettle, the electric kettle and the tea boiling device which are designed in a split way (without IH heating mode) are arranged at the bottom of the cup body:
for example, the temperature sensing device of the tea boiler heated by an electric ceramic stove is a thermocouple and mainly senses the temperature of a microcrystal panel to generate the on-off action of high and low temperatures, and the firepower gear controlled by a circuit can only control the output power of the tea boiler but cannot detect the actual temperature of water in a container.
In addition, the milk regulator with the temperature sensing device on the market and the glass or stainless steel bottom is arranged at the bottom of the main machine, and the temperature sensing device needs to form a certain distance with the surface of the heating element due to the requirement of temperature sensing precision so as to avoid the influence of the temperature on the surface of the heating element on the detection temperature of the cup body container.
The invention content is as follows:
in view of the deficiencies of the prior art, an object of the present invention is to provide a temperature sensing device for a heating container, which has simple structure and reasonable design, and is favorable for accurately detecting the temperature of the heating container and the liquid in the heating container.
The utility model discloses heating vessel's temperature sensing device, its characterized in that: the heating device comprises a base used for bearing a heating container, wherein a temperature sensor in contact with the peripheral wall surface of the heating container is arranged on the side part of the base, and a heat source for supplying heat to the bottom of the heating container is arranged on the base.
Furthermore, the base is provided with a sunken groove used for surrounding and bearing the lower part of the heating container, the bottom of the sunken groove is provided with an electric heating body used for providing a heat source for the heating container, the surface of the electric heating body contacted with the heating container is a plane, and the temperature sensor is arranged on the side part of the base, namely the side part of the sunken groove.
Further, the temperature sensor is an NTC temperature sensor or an infrared sensor.
Furthermore, the temperature sensor is connected with the side part of the base in a sliding way, and the starting station and the ending station which slide correspondingly realize the electrification and the outage of the electric heating body positioned in the base.
Furthermore, a slotted hole is formed in the side part of the base, a guide sleeve is fixedly arranged in the slotted hole, a sliding sleeve is arranged in the guide sleeve, the temperature sensor is fixedly arranged at one end, facing the center of the base, of the sliding sleeve, one end, away from the center of the base, of the sliding sleeve is in contact with the travel switch, an outer flange is arranged in the middle section of the sliding sleeve, a compression spring which pushes the sliding sleeve to one side of the center of the base is sleeved on the side part, located behind the outer flange, of the sliding sleeve, and when the temperature sensor is pushed by a heating container to enable the sliding sleeve to move to the end far away from the center of the base, the travel switch; when the temperature sensor is not pushed by the heating container, the sliding sleeve moves towards one side close to the center of the base under the action of the compression spring, and the travel switch cuts off the power supply of the electric heating body in the base to realize the power-off of the electric heating body.
Furthermore, the heating container is a glass container and comprises a glass cup body and a glass cup bottom integrated with the glass cup body, and the flatness tolerance of the bottom surface of the glass cup bottom is 0.02-0.30 mm.
Furthermore, the requirements of the flatness tolerance of the bottom surface of the glass cup and the thickness of the bottom surface of the glass cup are met by grinding with a water mill.
Further, the bottom surface of the glass cup is coated with a coating with heat-conducting metal powder; or carrying out sand blasting treatment on the bottom surface of the glass cup or electroplating treatment on the bottom surface of the glass cup; or the bottom surface of the glass cup bottom is bonded or sintered with a heat-conducting metal film layer; or the bottom surface of the glass cup bottom is provided with a groove, a heat-conducting metal plate is bonded in the groove, and the thickness of the heat-conducting metal plate is larger than the depth of the groove; a heat-conducting metal plate is bonded on the bottom surface of the glass cup bottom, the flatness tolerance of the bottom surface of the heat-conducting metal plate is 0.02-0.30mm, the fineness is more than 5, and the flatness tolerance of the bottom surface of the glass cup bottom is more than 0.01 mm; the flatness tolerance of the surface, jointed with the bottom surface of the glass heating container, of the electric heating body is 0.02-0.30mm, and the smoothness of the surface, jointed with the bottom surface of the glass heating container, of the electric heating body is more than 5 th grade.
Further, the electric heating element comprises an aluminum substrate and an electric heating pipe which is arranged on the lower surface of the aluminum substrate and is spirally arranged, the upper surface of the aluminum substrate is attached to the bottom surface of the heating container, or the electric heating element comprises a die-cast aluminum plate and a Teflon coating layer which is sprayed on the surface of the formed electric heating pipe, and the upper surface of the die-cast aluminum plate is attached to the bottom surface of the glass heating container.
The utility model discloses heating vessel temperature sensing device's operating method, heating vessel temperature sensing device is including the base that is used for holding heating vessel, be equipped with on the lateral part of base with the temperature sensor of heating vessel outer wall contact, the during operation is placed heating vessel on the base, makes the outer wall of temperature sensor contact heating vessel, and when the temperature sensor detected heating vessel's outer wall temperature reached the settlement temperature, the power supply of the interior electric heat-generating body of base was cut off promptly.
The utility model discloses glass heating vessel's theory of operation, through set up the temperature sensor with the outer wall contact of heating vessel on the lateral part of base, thereby need not to set up the temperature sensor on the surface of base with the contact of heating vessel bottom surface, can provide bigger contact for the heat conduction surface, the area of heat conduction, heat transfer efficiency is improved, the temperature sensor does not set up the position that is close to with the source of generating heat (or electric heat-generating body) simultaneously, and set up the lateral part at the base that is higher than the heating vessel bottom surface, make the temperature that detects heating vessel and its internal liquid more accurate.
Description of the drawings:
FIG. 1 is a schematic cross-sectional view of one embodiment of a glass heating vessel according to the present invention;
FIG. 2 is a schematic cross-sectional view of another embodiment of the glass heating vessel of the present invention;
FIG. 3 is a schematic view of the base construction of FIG. 2;
FIG. 4 is a schematic view showing a specific construction of FIG. 3 in which a temperature sensor and a travel switch are installed;
FIG. 5 is a view of another embodiment of FIG. 4;
FIG. 6 is a schematic sectional configuration of a heating vessel;
FIG. 7 is a top view of FIG. 6;
FIG. 8 is an enlarged view of portion A of the first embodiment of FIG. 6;
FIG. 9 is an enlarged view of portion A of the second embodiment of FIG. 6;
FIG. 10 is an enlarged view of portion A of the third embodiment of FIG. 6;
FIG. 11 is an enlarged view of section A of the fourth embodiment of FIG. 6;
FIG. 12 is an enlarged view of section A of the fifth embodiment of FIG. 6;
FIG. 13 is an enlarged view of section A of the alternate embodiment of FIG. 6;
fig. 14 is a control schematic block diagram.
The specific implementation mode is as follows:
the method of the present invention will be described in further detail with reference to examples. It should be noted that the protection scope of the present invention should include, but not be limited to, the technical content disclosed in the present embodiment.
The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
In an embodiment of the base (as shown in fig. 1), the upper portion of the base a1 is a plane, a protrusion a2 (only a part of the circumference of the protrusion) is provided on a side portion of the plane, a temperature sensor a4 contacting with the outer wall surface of the heating container A3 is provided on the protrusion a2, a heat source (the heat source in this application is the electric heating element 9, but may be other types of heat sources, such as an electric ceramic oven, an electromagnetic oven, etc.) for supplying heat to the bottom of the heating container A3 is provided on the base, the upper plane of the base a1 is the upper surface of the electric heating element 9 mounted on the base, the upper surface of the electric heating element 9 contacts with the bottom of the heating container A3, that is, the upper surface of the electric heating element is a heating surface, and has a high temperature, and a user easily touches the.
In another embodiment of the base (as shown in fig. 2), the base a1 has a recessed groove a5 for surrounding and supporting the lower part of the heating container A3, the bottom of the recessed groove a5 is provided with an electric heating element 9 for providing a heat source for the heating container, the surface of the electric heating element 9 contacting with the heating container is a plane, and the temperature sensor a4 is arranged at the side of the base, namely at the side of the recessed groove a 5.
The temperature sensors a4 of the above two embodiments are located at the side of the base a1, one is located on the side projection a2, and the other is located at the side of the recessed groove a5, all located at the side of the base a1 in terms of orientation.
The two embodiments are characterized in that the temperature sensor contacted with the peripheral wall surface of the heating container is arranged on the side part of the base, so that the temperature sensor is not required to be arranged on the surface (namely the upper surface of the electric heating body) contacted with the bottom surface of the heating container, larger contact and heat conduction area can be provided for the heat conduction surface, the heat transfer efficiency is improved, meanwhile, the temperature sensor is not arranged at the position close to the heating source (or the electric heating body) and is arranged on the side part of the base higher than the bottom surface (or the upper surface of the electric heating body) of the heating container, and the temperature for detecting the heating container and the liquid in the heating container is not influenced by the heating source and is more accurate.
In order to be convenient to use, stable and reliable, the temperature sensor is an NTC temperature sensor or an infrared sensor, the NTC temperature sensor is an NTC resistance thermosensitive temperature sensor which is widely used in the market, and is contacted with the surface of an object to be measured (namely the outer wall surface of the heating container A3 in the application) when in use, the temperature contact is more accurate, the cost is low, and the infrared sensor is also a temperature sensing element of the kettle.
Further, in order to simplify the structure, the temperature sensor a4 is slidably connected to the side of the base, the start position and the end position of the sliding movement correspond to each other to energize and de-energize the electric heating element located in the base, the temperature sensor 4 is electrically de-energized when the start position and the end position of the sliding movement are located in the base, and the electric heating element located in the base is energized when the temperature sensor a4 is located in the start position of the sliding movement.
As shown in fig. 4 (other fixing or limiting structures are omitted in the figure), a slot A7 is provided on the side of the base a1, a guide sleeve A8 is fixedly provided in the slot A7, a sliding sleeve A9 is provided in the guide sleeve A8, a recess is provided at one end of the sliding sleeve A9 facing the center of the base (referring to the axis of the base), the temperature sensor A4 is fixedly provided in the recess, the lead of the temperature sensor A4 passes through the sliding sleeve A9 to be electrically connected with the controller in the base, one end of the sliding sleeve A9 far from the center of the base is in contact with a stroke switch a10, the stroke switch a10 may be a metal elastic pick, etc., the power of the electric heating element is turned on when the sliding sleeve is pressed, the power of the electric heating element is turned off when the sliding sleeve is not pressed, an outer flange a11 is provided on the middle section of the sliding sleeve A9, the outer peripheral diameter of the sliding sleeve a11 is equivalent to the inner peripheral diameter of the guide sleeve A8, the sliding sleeve is provided on the side of the sliding One end of a compression spring A12 is pressed against the rear side face of the outer flange A11, and the other end of the compression spring A12 is pressed against a fixing piece in the base body.
Another travel switch a10 may be a rocker switch (as shown in fig. 5), when the sliding sleeve a9 is pushed toward the end away from the center of the base, the peripheral wall of the sliding sleeve a9 abuts against the rocker of the rocker switch, so that the rocker is connected to the contact rod to realize power-on, and conversely, the rocker is powered off.
When the temperature sensor works, the travel switch conducts the power supply of the electric heating body in the base to realize the electrification of the electric heating body when the temperature sensor is pushed by the heating container to enable the sliding sleeve to move to the bottom far away from the center of the base; when the temperature sensor is not pushed by the heating container, the sliding sleeve moves towards one side close to the center of the base under the action of the compression spring, the travel switch cuts off the power supply of the electric heating body in the base to realize the power-off of the electric heating body, and the bases of the two embodiments are both suitable for the sliding structure.
The application discloses heating container A3 is made for glass, and it includes glass body 1 and forms integrative glass bottom of cup 2 with the glass body, and this glass bottom of cup 2 bottom surface 3 is the plane, and the heat-conducting surface that pastes mutually with it is the upper surface of electric heat-generating body, for whole plane (do not set up as in the background art the boss that is used for installing temperature sensing device) to can improve the area of contact of electric heat-generating body and glass bottom of cup 2 bottom surface 3, provide bigger contact, the area of heat conduction, improve heat transfer efficiency, shorten the heat application time.
The heating container of the present application also has significant features, and the specific implementation structure of the heating container of the present application is described in detail below:
The main reason that the prior full glass container as a water boiler cannot be widely popularized is that the heating efficiency of the water boiler of the prior glass container is extremely low, namely, as mentioned in the background art, 1200ml of water needs more than one hour for heating from 25 ℃ to 100 ℃, but the application overcomes the problem that the water boiler cannot be overcome for a long time and is a revolutionary product; the applicant finds through research that the reason that the heating efficiency of the glass container adopting the heating pipe arranged on the bottom surface is low is that the surface of the bottom surface of the glass container is high, low and extremely uneven in microscopic view, the contact between the heating pipe and the bottom surface of the glass container is line contact, the contact area is extremely effective, the heating efficiency is low and uneven, and even if the electric heating body constructed by the application is adopted as a heating source, the contact area between the electric heating body and the bottom surface of the glass container is still limited, and the heating efficiency is still low.
The flatness tolerance of 3 at glass bottom of cup bottom surface 0.05mm, thickness 1.5 mm's this application product passes through the experiment (the heating element who adopts in this experiment is the electric heat-generating body of this application structure) under the same heating power with current full glass kettle etc. condition, 1200ml water of this application heating container dress heats to 100 ℃ from 25 ℃ only need 13 minutes's time, and current full glass kettle dress 1200ml water heats to 100 ℃ needs 60 minutes's time from 25 ℃, the glass heating container of this application structure makes heating efficiency show the improvement.
Through tests, the heating container is filled with 1200ml of water and heated from 25 ℃ to 100 ℃ under the same conditions, the water boiling time is increased, and the water boiling time with the flatness tolerance of 0.02, 0.03, 0.04, 0.05, 0.08, 0.10, 0.13, 0.15, 0.18, 0.20, 0.25, 0.30, 0.40 and 0.50 mm is respectively 11.8 minutes, 12 minutes, 12.4 minutes, 13 minutes, 14.7 minutes, 16.9 minutes, 19.8 minutes, 22.7 minutes, 26.1 minutes, 29.3 minutes, 33.5 minutes, 38 minutes, 44.6 minutes and 51.3 minutes, so the flatness tolerance of 0.03-0.08mm is preferably adopted.
The whole body of the glass heating container is made of glass, and the glass heating container can be immersed into water to be cleaned without any electronic element (the electronic element is positioned in the base), so that dirt on the glass heating container can be completely removed, and the drinking water quality of people is ensured; meanwhile, the glass heating container does not generate electromagnetic radiation or infrared radiation generated by an electric ceramic furnace without using an electromagnetic heating technology, and does not have health influence on human bodies, and the glass heating container is simple to manufacture, low in cost and easy to sell, popularize and use; in addition this application is through base electric heat-generating body and the heat-conduction of bottom of cup for the face contact, heat conduction area is big and even, can be covered with tiny bubble at glass bottom of cup internal surface in the heating process, the noise that produces when tiny bubble explodes is less, and the electric heating pipe that current generally adds hot water kettle or transfers the milk ware is the ring form and fixes at the bottom of cup, make its heating concentrate on the round of ring, the bubble of production also concentrates on the round of this ring, at the in-process of heating up water, will produce the air blasting of great bubble because of heating inhomogeneous at the round of ring, arouse too big noise.
In order to realize the flatness tolerance of the bottom surface 3 of the glass cup bottom 2, the requirement of the flatness tolerance of the bottom surface of the glass cup bottom is realized by grinding with a water mill, the water mill can be used for grinding the bottom surface of the glass cup by continuously dripping water on a grinding disc rotating at a high speed to the surface of the grinding disc, manually or by a mechanical hand, the bottom surface of the glass cup is pressed on the surface of the grinding disc, the flatness tolerance of the bottom surface of the glass cup bottom reaches the requirement after grinding for a certain time, and the grinding of the bottom surface 3 of the glass cup bottom can also be realized by other modes.
The difference between the embodiment 1-1 and the embodiment 1-1 is that the most economical appearance surface can be obtained by sand blasting after the water grinding and flattening of the bottom surface 3 of the glass cup bottom 2, the granularity of sand blasting of the bottom surface of the glass cup bottom is between 0.01 and 0.1mm, and the sand blasting treatment can obtain the most economical appearance and stability requirements on the premise of not causing excessive damage to the heat conduction performance.
Example 2, this example 2 differs from example 1 in that, after the bottom surface 3 of the glass cup bottom 2 is ground flat and cleaned (cleaned with water and alcohol), a coating 4 with a heat-conducting metal powder, which may be a metal aluminum powder or a metal copper powder, is coated on the bottom surface of the glass cup, the coating 4 with the heat-conducting metal powder is coated by screen printing, the coating 4 is a high temperature resistant paint containing the heat-conducting metal powder, which is commercially available, and the heat-conducting metal powder is mixed into the coating 4, and the thickness of the coating 4 is 0.005-0.05 mm; the heating efficiency can be further improved by coating the coating 4 with the heat-conducting metal powder on the ground bottom surface 3 of the glass cup bottom 2, and the same test as the example 1 is carried out, namely 1200ml of water filled in the glass heating container of the invention is heated from 25 ℃ to 100 ℃ for only about 12 minutes, the heating efficiency is improved by about 8-30% compared with the example 1, the example 2 also has the same other advantages as the example 1, a ground surface is formed on the bottom surface of the glass container by grinding the bottom surface with water and the like in the example, the flatness tolerance of the bottom surface is 0.03-0.05, and the roughness is higher than that before grinding, the firmness of the silk-screen printing coating 4 is also improved.
In embodiment 3, a heat conductive metal film is bonded or sintered to the bottom surface of the glass cup.
The difference between the embodiment 3 and the embodiment 1 is that after the bottom surface 3 of the glass cup bottom 2 is ground flat and cleaned, the bottom surface of the glass cup bottom is bonded or sintered with a heat-conducting metal film layer 5, the bonding can adopt heat-conducting silica gel 13, the surface of the heat-conducting metal film layer 5 is coated with the heat-conducting silica gel during the manufacturing process, or the bottom surface of the glass cup bottom is coated with the heat-conducting silica gel, and then the heat-conducting metal film layer 5 is attached to the heat-conducting silica gel and extruded flat; or the heat-conducting metal film layer 5 is directly sintered on the bottom surface 3 of the glass cup bottom 2 by heating, the heat-conducting metal film layer 5 is bonded or sintered on the bottom surface of the glass cup bottom, the heat-conducting metal film layer 5 can be a copper film layer, an aluminum film layer, a silver film layer and the like, the thickness of the heat-conducting metal film layer is 0.005-0.5mm, the heat-conducting metal film layer 5 is preferably sintered on the bottom surface of the glass cup bottom in the embodiment, and the flatness tolerance of the rear surface of the mounted film layer can be better ensured by the mode; similarly, the scheme of the embodiment 3 for sintering the heat-conducting metal film layer 5 on the bottom surface of the glass cup bottom is the same as that of the embodiment 1, and the same test is adopted in the embodiment 1, namely 1200ml of water filled in the glass heating container of the present invention is heated from 25 ℃ to 100 ℃ for about 12 minutes, the heating efficiency is improved by about 8% -30% compared with the embodiment 1, the embodiment 3 is equivalent to the embodiment 2, the embodiment 3 also has the same advantages as the embodiment 1, the frosted surface is formed on the bottom surface by the water grinding and leveling of the bottom surface of the glass container, the flatness tolerance of the bottom surface is 0.03-0.05, and the roughness is higher than that before the frosting, so that the firmness of connection between the heat-conducting metal film layer 5 and the bottom surface is also improved.
In the embodiment 4, the bottom surface of the glass cup is provided with the groove 6, the heat-conducting metal plate 14 is bonded in the groove, the thickness of the heat-conducting metal plate is larger than the depth of the groove, the flatness tolerance of the bottom surface of the heat-conducting metal plate is 0.03-0.05mm, the flatness tolerance of the groove 6 is not required, when manufacturing, namely, a glass blank body with a groove 6 is manufactured in advance, a heat-conducting metal plate with the bottom surface flatness tolerance of 0.03-0.05mm is manufactured in advance, the shape and the size of the heat-conducting metal plate are equivalent to those of the groove, heat-conducting silica gel is coated on the heat-conducting metal plate, the heat-conducting metal plate coated with the heat-conducting silica gel is pressed into the groove 6, the thickness of the bottom of the glass body of the embodiment can be 1.3-2.2 mm, the thickness of the heat-conducting metal plate is 1.5-3.3 mm, the embodiment 4 adopts the same test as the embodiment 1, that is, 1200ml of water in the glass heating container of the present application is heated from 25 ℃ to 100 ℃ for only about 13-15 minutes.
Example 5, the heat-conducting metal plate 14 is bonded to the bottom surface 3 of the glass cup, the heat-conducting silica gel 13 can be used for bonding, the thickness of the cup bottom of the glass blank in the example can be 1.3-2.2 mm, and the thickness of the heat-conducting metal plate is 1.5-3.3 mm, when the glass blank is manufactured, the heat-conducting metal plate 14 is attached to the glass blank after the heat-conducting silica gel is coated under the condition that the bottom surface 3 of the glass cup can be polished or not polished, the flatness tolerance of the bottom surface of the prefabricated heat-conducting metal plate is 0.02-0.05m, and the smoothness of the bottom surface of the heat-conducting metal plate is more than 5 grade (which means the requirement that the smoothness is higher than; the flatness tolerance of the bottom surface of the heat conductive metal plate is required to ensure the adhesion to the surface of the electric heating element 9, and the same test as in example 1 was carried out in example 5, in which 1200ml of water contained in the glass heating vessel of this application was heated from 25 ℃ to 100 ℃ for about 13 to 15 minutes.
In addition, the bottom surface of the glass cup bottom can be subjected to electroplating treatment after being ground flat.
The heat conducting metal plate 14 can be an aluminum plate, the glass cup is a water cup or a kettle made of glass completely, the water cup made of glass can facilitate people to check hot water conditions in the cup, the glass is easy to clean and has better health and environmental protection effects, and accessories made of other materials are added on the glass cup body or the bottom of the glass cup and are considered as the protection range of the application; the heat-conducting metal plate 14 and the aluminum substrate 10 of the electric heating element 9 may be round, and it is convenient to process the aluminum substrate in a round configuration, although other shapes are considered to fall within the scope of the present application,
usually, the glass body 1 and the glass bottom 2 are in fillet transition, that is, the edge of the glass bottom 2 is a fillet, and the heat-conducting coating, the heat-conducting film layer or the heat-conducting plate of the above embodiments 2, 3 or 5 can extend to the fillet edge of the glass bottom 2, so as to play a certain protection role for the glass container of the present application, but have a certain difficulty in processing the heat-conducting plate, and certainly can not extend to the edge of the glass bottom 2; in order to effectively buffer the impact force generated by side collision, a circle of buffer silica gel ring 12 is added at the round corner of the bottom of the glass cup to protect the glass cup from being damaged.
The glass heating container A3 of the above embodiments 1-5 can be used by being sunk in the base A1, the lower part of the glass heating container is sunk in the base with the concave groove A5 for heating, the bottom of the concave groove is provided with the electric heating element 9 attached to the bottom surface of the glass heating container, the flatness tolerance of the surface of the electric heating element 9 attached to the bottom surface of the glass heating container A3 is 0.02-0.30mm, the smoothness is more than 5 grade, the better flatness tolerance of the surface of the electric heating element 9 is 0.03-0.05mm, the surface of the electric heating element can be better attached to the bottom surface of the glass cup through the flatness tolerance requirement of the electric heating element, the heat of the electric heating element can be better conducted to the bottom of the glass cup, and the heating efficiency is ensured; the electric heating tube of the existing heating kettle or milk regulator is fixed at the bottom of the glass cup in a circular ring shape, so that the heating is concentrated in one circle of the circular ring, the generated bubbles are also concentrated in one circle of the circular ring, and the air explosion of the larger bubbles generated in one circle of the circular ring due to uneven heating can cause overlarge noise in the water boiling process; this application is the heat-conduction of face and face through electric heat-generating body and bottom of cup, and heat conduction area is big and even, is favorable to reducing the air blasting noise of boiling water bubble.
In order to design reasonably, the electric heating body 9 comprises an aluminum substrate 10 and an electric heating pipe 11 which is arranged on the lower surface of the aluminum substrate and is spirally arranged, and the upper surface of the aluminum substrate 10 is attached to the bottom surface 3 of the glass heating container; the thickness of the aluminum substrate 10 is more than or equal to 2.5mm, the surface of the aluminum substrate is mirror-polished, the flatness tolerance is preferably less than or equal to 0.03mm, the electric heating pipe 11 which is spirally arranged can enable the heating to be more uniform, or the electric heating body comprises a die-cast aluminum plate and a Teflon sprayed on the surface of the formed electric heating pipe, and the upper surface of the die-cast aluminum plate is attached to the bottom surface of the glass heating container; the electric heating tube 11 is a conventional heating element, but is usually wound into a circular ring shape and fixed on a heating body at present, and has the problem of uneven heating, that is, the temperature of the circular ring shape near the electric heating tube is high, and the temperature of the electric heating tube 11 far away from the circular ring shape is low, which causes the above-mentioned uneven heating, and air explosion of large bubbles will be generated, and excessive noise will be caused, but by adopting the electric heating tube 11 arranged spirally, although the length of the electric heating tube 11 is slightly increased, the uniformity of the whole temperature of the aluminum substrate 6 is ensured, and the air explosion noise of water-boiling bubbles is also reduced, the electric heating tube 11 can be sunk into the spiral channel of the lower surface of the aluminum substrate 10 (the contact surface between the electric heating tube 11 and the aluminum substrate 10 is increased, the heat conduction effect is improved), or directly installed on the lower surface of the, the contact diameter of the bottom surface 3 of the glass cup and the electric heating body 9 is not less than 128mm, thereby ensuring the surface contact area.
The electric heating element 9 is preferably adopted, and a thick-film heating plate, a PTC heating element and a profile aluminum substrate can be adopted, but the thick-film heating plate is expensive, the surface of the thick-film heating plate can only be a stainless steel base material at present, the surface deformation is large, and the surface processing difficulty is large; and the PTC heating element and the section aluminum substrate are not easy to assemble, and the matched structure for installation is complex.
In order to realize temperature control, a temperature sensor (NTC temperature sensor) A4 and a travel switch A10 are electrically connected with a controller 15 positioned in the base, and the controller 15 is electrically connected with an electric heating tube 11 of an electric heating body 9; the NTC temperature sensor, the travel switch a10 and the controller 15 are all widely available products, and the electronic components are widely used to form a temperature control circuit in electric heating kettles and the like.
The working principle of temperature control is as follows: the electric heating body 9 is controlled by the controller to generate heat, the electric heating body 9 conducts the heat to the bottom of the glass cup through the contact of the surface and heats the liquid in the glass cup body, the temperature of the heating liquid in the glass cup can be sensed through a temperature sensor (NTC temperature sensor) A4, when the temperature reaches a set value, a signal is transmitted to the controller 15 by the temperature sensor, and the controller controls the electric heating pipe 11 to be powered off, so that the temperature required to be controlled is reached.
The groove depth of the concave groove is 10-120 mm, preferably 50-60mm, and the groove depth of the concave groove is 50-60mm, so that the guide of the glass cup placed in the concave groove of the base is facilitated, and the more critical function is to ensure that a consumer is not easy to contact the surface of the electric heating body with higher temperature, and scald is avoided.
This application glass heating container can adopt high boron glass all over, and the average wall thickness of preferred is greater than or equal to 1.8mm, and bottom water dull polish grinds flat, and thickness 1.0~1.5 mm.
The utility model discloses glass heating container's manufacturing method, glass heating container includes glass cup body and the glass cup bottom of cup that forms an organic whole with glass cup body, the flatness tolerance of glass cup bottom surface is 0.02-0.30mm, and during the preparation, glass heating container makes the body according to the shape requirement, and the bottom surface of this glass heating container body is flat, carries out the water mill with this glass heating container body's bottom surface and grinds the level to make the flatness tolerance of this bottom surface at 0.02-0.30mm, and the thickness of control glass bottom of cup is at 1.0-2.0mm, and the preferred is that the flatness tolerance is at 0.03-0.05mm, and the thickness of glass bottom of cup is at 1.3-1.5 mm.
After the bottom surface of the glass heating container is ground flat and cleaned by a water mill, coating with heat-conducting metal powder is brushed or silk-screen printed on the bottom surface; or sand blasting treatment; or a heat-conducting metal film layer is bonded or sintered on the bottom surface; or the bottom surface is bonded with a heat-conducting metal plate by using heat-conducting silica gel.
The bottom surface of the bottom of the manufactured glass cup is provided with a groove, a prefabricated heat-conducting metal plate is bonded in the groove by using heat-conducting silica gel, the thickness of the heat-conducting metal plate is larger than the depth of the groove, the diameter of the heat-conducting metal plate is equivalent to that of the groove, the flatness tolerance of the bottom surface of the heat-conducting metal plate is 0.02-0.30mm, and the flatness tolerance of the bottom surface of the heat-conducting metal plate is preferably 0.03-0.05 mm.
The glass heating container of the utility model is ground on the bottom surface of the glass cup bottom to ensure that the flatness tolerance of the bottom surface reaches 0.02-0.30mm, thereby ensuring that the bottom surface can be attached to the surface with the base electric heating body with similar flatness tolerance requirements to the maximum extent, thereby being beneficial to obviously improving the heating efficiency of the glass heating container; the glass heating container is made of glass on the whole body, does not have any electronic element, and can be immersed into water to be cleaned on the whole body, so that dirt on the glass heating container can be completely removed, and the drinking water quality of people is ensured; meanwhile, the glass heating container does not generate electromagnetic radiation by using an electromagnetic heating technology or infrared radiation generated by an electric ceramic furnace, so that the health of a human body is not influenced, and the glass heating container is simple to manufacture, low in cost and easy to sell, popularize and use; in addition this application is through base electric heat-generating body and the heat-conduction of cup bottom for face contact, and heat conduction area is big and even, has solved general heating kettle or milk adjusting device and has boiled water the in-process, because of heating inhomogeneous production air blasting arouses the problem of too big noise.
The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (10)
1. A temperature sensing device for heating a container, comprising: the heating device comprises a base used for bearing a heating container, wherein a temperature sensor in contact with the peripheral wall surface of the heating container is arranged on the side part of the base, and a heat source for supplying heat to the bottom of the heating container is arranged on the base.
2. The temperature-sensing device for heating a container according to claim 1, wherein: the base is provided with a sunken groove used for surrounding and bearing the lower part of the heating container, the bottom of the sunken groove is provided with an electric heating body used for providing a heat source for the heating container, the surface of the electric heating body contacted with the heating container is a plane, and the temperature sensor is arranged on the side part of the base, namely on the side part of the sunken groove.
3. The temperature-sensing device for heating a container according to claim 1, wherein: the temperature sensor is an NTC temperature sensor or an infrared sensor.
4. The temperature-sensing device for heating a container according to claim 1, 2 or 3, wherein: the temperature sensor is connected with the side part of the base in a sliding manner, and the starting station and the ending station which slide correspondingly realize the electrification and the outage of the electric heating body positioned in the base.
5. The temperature-sensing device for heating a container according to claim 4, wherein: the side part of the base is provided with a slotted hole, a guide sleeve is fixedly arranged in the slotted hole, a sliding sleeve is arranged in the guide sleeve, one end of the sliding sleeve, which faces the center of the base, is fixedly provided with the temperature sensor, one end of the sliding sleeve, which is away from the center of the base, is in contact with the travel switch, an outer flange is arranged in the middle section of the sliding sleeve, a compression spring which pushes the sliding sleeve to one side of the center of the base is sleeved on the side part, which is behind the outer flange, of the sliding sleeve, and when the temperature sensor is pushed by a heating container to enable the sliding sleeve to move to the end far away from the center of; when the temperature sensor is not pushed by the heating container, the sliding sleeve moves towards one side close to the center of the base under the action of the compression spring, and the travel switch cuts off the power supply of the electric heating body in the base to realize the power-off of the electric heating body.
6. The temperature-sensing device for heating a container according to claim 2, wherein: the heating container is a glass container and comprises a glass cup body and a glass cup bottom integrated with the glass cup body, and the flatness tolerance of the bottom surface of the glass cup bottom is 0.02-0.30 mm.
7. The temperature-sensing device for heating a container according to claim 6, wherein: the requirements of the flatness tolerance of the bottom surface of the glass cup and the thickness of the bottom of the glass cup are met by grinding with a water mill.
8. The temperature-sensing device for heating a container according to claim 6 or 7, wherein: the bottom surface of the glass cup bottom is coated with a coating with heat-conducting metal powder; or carrying out sand blasting treatment on the bottom surface of the glass cup or electroplating treatment on the bottom surface of the glass cup; or the bottom surface of the glass cup bottom is bonded or sintered with a heat-conducting metal film layer.
9. The temperature-sensing device for heating a container according to claim 6 or 7, wherein: the bottom surface of the glass cup bottom is provided with a groove, a heat-conducting metal plate is bonded in the groove, and the thickness of the heat-conducting metal plate is larger than the depth of the groove; a heat-conducting metal plate is bonded on the bottom surface of the glass cup bottom, the flatness tolerance of the bottom surface of the heat-conducting metal plate is 0.02-0.30mm, the fineness is more than 5, and the flatness tolerance of the bottom surface of the glass cup bottom is more than 0.01 mm; the flatness tolerance of the surface, jointed with the bottom surface of the glass heating container, of the electric heating body is 0.02-0.30mm, and the smoothness of the surface, jointed with the bottom surface of the glass heating container, of the electric heating body is more than 5 th grade.
10. The temperature-sensing device of claim 2, 6 or 7, wherein: the electric heating body comprises an aluminum substrate and an electric heating pipe which is arranged on the lower surface of the aluminum substrate in a spiral shape, the upper surface of the aluminum substrate is attached to the bottom surface of the heating container, or the electric heating body comprises a die-cast aluminum plate and a Teflon coating layer which is sprayed on the surface of the formed electric heating pipe, and the upper surface of the die-cast aluminum plate is attached to the bottom surface of the glass heating container.
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| CN2020212207189 | 2020-06-29 | ||
| CN202021220718 | 2020-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021415501.3U Active CN214712043U (en) | 2020-06-29 | 2020-07-17 | Glass heating container |
| CN202021415485.8U Active CN214128137U (en) | 2020-06-29 | 2020-07-17 | Glass heater with heat-conducting metal layer |
| CN202010692045.5A Pending CN111870120A (en) | 2020-06-29 | 2020-07-17 | Glass heating container and manufacturing method thereof |
| CN202021519561.XU Ceased CN212788241U (en) | 2020-06-29 | 2020-07-28 | Temperature sensing device for heating container |
| CN202010739459.9A Pending CN111759160A (en) | 2020-06-29 | 2020-07-28 | Temperature sensing device for heating container and working method thereof |
| CN202021606845.2U Active CN214341743U (en) | 2020-06-29 | 2020-08-05 | Glass heating container for bottom temperature sensing |
| CN202010779526.XA Pending CN111956066A (en) | 2020-06-29 | 2020-08-05 | High-efficiency heat-conduction glass heating container and manufacturing method thereof |
| CN202021606851.8U Active CN212438272U (en) | 2020-06-29 | 2020-08-05 | High-efficiency heat-conduction glass heating container |
| CN202010780128.XA Pending CN111972993A (en) | 2020-06-29 | 2020-08-05 | Implementation method for improving heat conduction efficiency of glass heating container |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021415501.3U Active CN214712043U (en) | 2020-06-29 | 2020-07-17 | Glass heating container |
| CN202021415485.8U Active CN214128137U (en) | 2020-06-29 | 2020-07-17 | Glass heater with heat-conducting metal layer |
| CN202010692045.5A Pending CN111870120A (en) | 2020-06-29 | 2020-07-17 | Glass heating container and manufacturing method thereof |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010739459.9A Pending CN111759160A (en) | 2020-06-29 | 2020-07-28 | Temperature sensing device for heating container and working method thereof |
| CN202021606845.2U Active CN214341743U (en) | 2020-06-29 | 2020-08-05 | Glass heating container for bottom temperature sensing |
| CN202010779526.XA Pending CN111956066A (en) | 2020-06-29 | 2020-08-05 | High-efficiency heat-conduction glass heating container and manufacturing method thereof |
| CN202021606851.8U Active CN212438272U (en) | 2020-06-29 | 2020-08-05 | High-efficiency heat-conduction glass heating container |
| CN202010780128.XA Pending CN111972993A (en) | 2020-06-29 | 2020-08-05 | Implementation method for improving heat conduction efficiency of glass heating container |
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| CN113057493A (en) * | 2021-04-07 | 2021-07-02 | 江西安姆特母婴用品有限公司 | High-efficiency heat-conduction glass heating container and manufacturing method thereof |
| CN113795056A (en) * | 2021-09-17 | 2021-12-14 | 福建辉伦婴童用品有限公司 | Electric heating plate and preparation method thereof |
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| JPS5960421A (en) * | 1982-09-30 | 1984-04-06 | Toshiba Corp | Liquid crystal display device |
| DE8617814U1 (en) * | 1986-07-03 | 1986-09-25 | Vesten AG, Stans | Device for storing fresh meat |
| DE59404582D1 (en) * | 1994-08-12 | 1997-12-18 | David & Baader Dbk Spezfab | Electrically heated heating device |
| CN1836829A (en) * | 2005-03-25 | 2006-09-27 | 鸿富锦精密工业（深圳）有限公司 | Heat radiator preparation method |
| DE102009010952A1 (en) * | 2009-02-27 | 2010-09-09 | Schott Ag | Coating for the display area of glass or glass-ceramic panes, method for producing such a coating and its use |
| CN201481031U (en) * | 2009-04-30 | 2010-05-26 | 浙江绍兴苏泊尔生活电器有限公司 | Electrothermal film heating cooker |
| CN203447107U (en) * | 2013-08-28 | 2014-02-26 | 美的集团股份有限公司 | Vacuum electric heating container |
| CN105348908A (en) * | 2015-12-02 | 2016-02-24 | 佛山市高明绿色德化工有限公司 | Metal color glass printing ink |
| CN206659651U (en) * | 2016-11-28 | 2017-11-24 | 广东伊莱特电器有限公司 | A kind of IH electric cookers ceramic liner |
| CN106698901B (en) * | 2016-12-07 | 2019-02-26 | 重庆市三星精艺玻璃股份有限公司 | Utilize the glass machining technique of press-and-blow process |
| CN207323330U (en) * | 2017-03-07 | 2018-05-08 | 深圳市贝丽科技有限公司 | A kind of heating unit of energy-saving safe |
| CN207940675U (en) * | 2017-11-01 | 2018-10-09 | 九阳股份有限公司 | A kind of liquid heater |
| CN208957630U (en) * | 2017-12-16 | 2019-06-11 | 湖北华强日用玻璃有限公司 | Glass chassis and electric heating kettle body assembling structure with a circle groove |
| CN208822374U (en) * | 2018-06-05 | 2019-05-07 | 广东美的生活电器制造有限公司 | Heating disc component and liquid heating |
| CN209966109U (en) * | 2019-04-25 | 2020-01-21 | 浙江绍兴苏泊尔生活电器有限公司 | Inner pot and cooking utensil |
| CN110179336B (en) * | 2019-06-28 | 2024-10-01 | 厦门佰顺兴自动化科技有限公司 | Heating chassis of electric kettle and manufacturing method thereof |
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2020
- 2020-07-17 CN CN202021415501.3U patent/CN214712043U/en active Active
- 2020-07-17 CN CN202021415485.8U patent/CN214128137U/en active Active
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- 2020-07-28 CN CN202021519561.XU patent/CN212788241U/en not_active Ceased
- 2020-07-28 CN CN202010739459.9A patent/CN111759160A/en active Pending
- 2020-08-05 CN CN202021606845.2U patent/CN214341743U/en active Active
- 2020-08-05 CN CN202010779526.XA patent/CN111956066A/en active Pending
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| CN111759160A (en) | 2020-10-13 |
| CN212438272U (en) | 2021-02-02 |
| CN111972993A (en) | 2020-11-24 |
| CN214712043U (en) | 2021-11-16 |
| CN214341743U (en) | 2021-10-08 |
| CN111870120A (en) | 2020-11-03 |
| CN111956066A (en) | 2020-11-20 |
| CN214128137U (en) | 2021-09-07 |
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