Heating device and heat preservation bowl

Abstract

The utility model provides a heating device and a heat preservation bowl, the heating device is used for the heat preservation bowl, the heating device is arranged in the heat preservation bowl, the heating device comprises a heating part and a heat conduction part, the heating part and the heat conduction part are used for heating food in the heat preservation bowl, and through holes are formed in the heat conduction part; the heating part sleeves the outer side of the heat conduction part, and the heat conduction part can slide relative to the heating part in the axial direction of the heating device so that the heat preservation bowl and the interior of the heating device can be communicated through the through hole. The heating part can generate heat to heat food in the bowl, the heating part makes contact with the food to achieve heating, when the heat conduction part moves downwards in the axial direction of the heating device to be away from the heating part, the through holes are away from the wall face of the heating part, and ventilation between the interior of the heat preservation bowl and the heating device is achieved; the heating device can transfer heat energy in a gas circulation mode to heat food, so that the heating effect is more uniform. And a heating mode is added to meet the heating requirements of different types of food, so that the applicability and the use convenience are improved.

Description

Technical Field

[0001] The utility model relates to the field of tableware, in particular to a heating device and a heat-insulating bowl. Background Art

[0002] Common insulation bowls on the market usually have a bowl body for insulation. The bowl body is very heavy, and the bowl cover usually plays a sealing role. When food is placed inside the insulation bowl, the prior art often uses a medium heating or cooling method to keep it warm. The heating device is set at the bottom of the bowl or on the bowl cover to heat the food in the bowl. The heating method in the prior art is relatively single. Although it can heat the food in the bowl, the heating effects of different types of food vary greatly, it is difficult to heat quickly, and the heating effect is affected, and it cannot meet the user's requirements for the heating effect of different ingredients. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defect in the prior art that a heating device provides a single heating method which cannot meet the needs of users, and to provide a heating device and a heat preservation bowl.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A heating device is used for an insulation bowl. The heating device is arranged in the insulation bowl. The heating device comprises a heating part and a heat-conducting part. The heating part and the heat-conducting part are used to heat food in the insulation bowl. The heat-conducting part is provided with a through hole. The heating part is sleeved on the outside of the heat-conducting part. Along the axial direction of the heating device, the heat-conducting part can slide relative to the heating part so that the through hole connects the insulation bowl and the inside of the heating device.

[0006] In the present solution, the heating part can generate heat to heat the food in the bowl. The heating part can realize the heating function by contacting with the food. The heating part combined with the heat conducting part can more evenly conduct heat to the food in the thermal insulation bowl. When the heat conducting part moves downward along the axial direction of the heating device away from the heating part, the through hole on the side wall of the heat conducting part is away from the wall surface of the heating part, thereby realizing ventilation between the inside of the thermal insulation bowl and the heating device, so that the heating device can transfer heat energy to heat the food by gas circulation. The heat transfer driven by the airflow also makes the heating effect of the food more uniform. For example, the heating effect of irregular shapes of foods with uneven heating effects can be achieved by contact heating. At the same time, the movement of the heat conducting part for a certain distance also increases the length of the heating device, which better adapts to bowls of different depths and improves applicability and convenience of use.

[0007] Preferably, a plurality of through holes are provided, and the plurality of through holes are spaced apart along the circumferential and radial directions of the side wall of the heat conducting part, and the heat conducting part comprises an air supply member, which is provided on the inner side wall of the heat conducting part and faces the through holes.

[0008] In the present solution, a plurality of through holes arranged at intervals can increase the heat transfer surface area, and the air supply member can blow hot air evenly into the insulation bowl to speed up the heating speed, so that the heating device can more evenly transfer heat to the food in the insulation bowl, thereby achieving uniform heating of the food. The distribution of through holes arranged at intervals in the circumferential and radial directions can make the wind force evenly distributed, avoiding the problem of local overheating or insufficient heating.

[0009] Preferably, the inner wall of the heating part is provided with at least two guide members, the axial direction of the guide members is parallel to the axial direction of the heating part, and the inner wall of the heat conducting part is provided with at least two guide rails, the guide rails are sleeved on the guide members and can slide relative to the guide members along the axial direction of the guide members.

[0010] In this solution, the heat conducting part is controlled to slide relative to the heating part by sliding the guide rail relative to the guide member, so that the ventilation connection between the through hole on the side wall of the heat conducting part and the inside of the heating device and the insulation bowl can be controlled. The position of the through hole can be accurately controlled during the sliding of the guide rail relative to the guide member, thereby controlling the ventilation between the inside of the heating device and the insulation bowl, and the degree of ventilation can be flexibly adjusted according to needs, thereby achieving precise control of food heating.

[0011] Preferably, the single guide member is configured as a symmetrical guide rod, a first end of the symmetrical guide rod is connected and fixed to the inner wall of the heating portion, and a second end of the symmetrical guide rod is spaced a distance from the interior of the heating portion to avoid the heat conducting portion.

[0012] In the present solution, the heat conducting part is slidably connected to the heating part through the symmetrical guide rod. Since there is a spacing distance between the second end of the symmetrical guide rod and the inner wall of the heating part, when the heat conducting part slides relative to the heating part, on the one hand, it will not be hindered by the symmetrical guide rod and thus affect the sliding distance. On the other hand, the outer wall of the heat conducting part and the inner wall of the heating part can be tightly fitted. When heating food, food residues and the like will not enter the interior of the heating device, thereby protecting the cleanliness and hygiene of the interior of the heating device.

[0013] Preferably, the heating part is threadedly connected to the heat conducting part, and the heat conducting part is spirally rotated relative to the heating part so that the through hole connects the heat preservation bowl and the interior of the heating device.

[0014] In this solution, the heating part and the heat conducting part are spirally rotated to achieve relative movement between the two, and whether the through hole is exposed can be accurately controlled. When the heat conducting part spirally rotates relative to the heating part, the through hole can be gradually exposed, so that a ventilation connection is established between the inside of the heating device and the insulation bowl; conversely, when the heat conducting part rotates to the closed position, the through hole will be closed, and the conversion between the two heating methods of contact heating through the heating part and hot air flow heating through the through hole can be flexibly realized, providing multiple heating methods to meet the heating needs of different foods.

[0015] Preferably, the inner wall of the heating part is provided with a threaded guide rail, and the outer wall of the heat conducting part is provided with a thread, and the thread is spirally connected to the threaded guide rail.

[0016] In this solution, the tight connection between the thread and the threaded guide makes the connection between the heat conducting part and the heating part more secure, not easy to loosen and has good sealing, thereby improving the stability of the heating device. The setting of the threaded guide enables the heat conducting part to perform precise spiral motion along the threaded guide of the heating part, so that the heat conducting part can accurately control the opening and closing of the through hole, thereby realizing ventilation control between the inside of the heating device and the insulation bowl.

[0017] Preferably, along the radial direction of the heat conducting portion, the through holes are arranged at intervals between two adjacent threads.

[0018] In this solution, the through holes are evenly distributed in the entire radial direction of the heat-conducting part, so that a more uniform heating effect can be achieved. The avoidance arrangement between the threads and the through holes can improve the stability of the structure and connection of the device itself.

[0019] A heat-insulating bowl comprises the heating device as described above. The heat-insulating bowl also comprises a bowl cover and a motor. The motor is arranged outside the bowl cover to be electrically connected to the heating device.

[0020] In this solution, the bowl body and the bowl cover form a heat preservation space, which can effectively maintain the temperature of the food. The motor is connected to the heating device to realize the heating function. The motor is arranged outside the bowl cover to avoid direct contact between the motor and the food or liquid, thereby improving the safety of the heat preservation bowl. At the same time, the motor is used as an electrical connector of the heating device, and the reliability and stability of the heating device are ensured by connecting with the heating device.

[0021] Preferably, the bowl cover is provided with a guide assembly, and the heating device is slidably connected to the bowl cover via the guide assembly.

[0022] In this solution, the guide assembly enables the heating device to achieve a precise sliding connection with the bowl cover. The heating device can slide along a specific path of the bowl cover, thereby achieving precise control of the position of the heating device. Such a design can make the contact position and angle of the heating device and the food just right, thereby achieving precise control of the heating process.

[0023] Preferably, the guide assembly includes a radial guide rail, which is arranged along the radial direction of the insulation bowl, the heating device includes a sliding cover and a guide slide, the sliding cover is arranged at one end of the heating device facing the bowl cover and is slidably connected to the bowl cover, the guide slide is connected to the radial guide rail and slides relative to the radial guide rail to enable the heating device to move radially relative to the bowl cover, and / or the guide assembly also includes a circumferential guide rail, which is arranged along the circumferential direction of the bowl cover, the guide slide is connected to the circumferential guide rail and can slide along the circumferential guide rail to enable the heating device to move circumferentially along the bowl cover.

[0024] In this solution, the radial guide rail cooperates with the guide slide to enable the heating device to move radially relative to the bowl cover. By adjusting the position of the guide slide on the radial guide rail, the movement of the heating device in the radial direction can be controlled to adjust the contact position between the heating device and the food. By adjusting the position of the guide slide on the circumferential guide rail, the movement of the heating device in the circumferential direction can be controlled to adjust the contact angle between the heating device and the food, further optimizing the heating effect. The heating device can fully contact the food, and the heat can be evenly transferred to various parts of the food by the flexible movement of the heating device in the radial and circumferential directions, thereby improving the heating effect and the taste of the food.

[0025] The positive and progressive effects of the utility model are:

[0026] The heating part can generate heat to heat the food in the bowl. The heating part can realize the heating function by contacting with the food. The heating part combined with the heat conducting part can more evenly conduct heat to the food in the thermal insulation bowl. When the heat conducting part moves downward along the axial direction of the heating device away from the heating part, the through hole on the side wall of the heat conducting part is away from the wall surface of the heating part, thereby realizing ventilation between the inside of the thermal insulation bowl and the heating device, so that the heating device can transfer heat energy to heat the food by gas circulation. The heat transfer driven by the airflow also makes the heating effect of the food more uniform. For example, the heating effect of irregular shape of food with uneven heating effect can be achieved by contact heating. At the same time, the movement of the heat conducting part a certain distance also increases the length of the heating device, which better adapts to bowls of different depths and improves applicability and convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the heating device and the bowl cover in Example 1 of the utility model;

[0028] Figure 2 for Figure 1 Schematic diagram of the internal structure.

[0029] Figure 3 It is a partial structural schematic diagram of the heating device in Example 1 of the utility model;

[0030] Figure 4 This is a partial structural schematic diagram of the heating device in Embodiment 1 of the utility model from another angle;

[0031] Figure 5 This is a partial structural schematic diagram of the heating device in Example 2 of the utility model;

[0032] Figure 6 for Figure 5 A schematic diagram of the structure from another angle.

[0033] Description of Reference Numerals

[0034] 1 Heating device

[0035] 10 Heating unit

[0036] 101 Symmetrical guide rod

[0037] 1011 First End

[0038] 1012 Second End

[0039] 102 Threaded Rail

[0040] 20 Heat transfer part

[0041] 201 Through hole

[0042] 202 Air supply parts

[0043] 203 Guide Rail

[0044] 204 Thread

[0045] 30 Slide

[0046] 40 Slide guide

[0047] 2 bowl lids

[0048] 21 Radial guide rails

[0049] 22 Circumferential guide rail DETAILED DESCRIPTION

[0050] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0051] Example 1

[0052] like Figure 1-4 As shown, Embodiment 1 of the utility model provides a heat preservation bowl, which includes a heating device 1, a bowl cover 2 and a motor, wherein the motor is arranged outside the bowl cover 2 to be electrically connected to the heating device 1. The bowl body and the bowl cover 2 constitute a heat preservation space, which can effectively maintain the temperature of the food. The motor is connected to the heating device 1 to realize the heating function. The motor is arranged outside the bowl cover 2 to avoid direct contact between the motor and the food or liquid, thereby improving the safety of the heat preservation bowl. At the same time, the motor serves as an electrical connector of the heating device 1, and through the connection with the heating device 1, the reliability and stability of the heating device 1 are ensured.

[0053] like Figure 2As shown, the bowl cover 2 is provided with a guide assembly, and the heating device 1 is slidably connected to the bowl cover 2 via the guide assembly. The guide assembly includes a radial guide rail 21, which is arranged along the radial direction of the heat preservation bowl. The heating device 1 includes a sliding cover 30 and a guide slide 40. The sliding cover 30 is arranged at one end of the heating device 1 facing the bowl cover 2 and is slidably connected to the bowl cover 2. The guide slide 40 is connected to the radial guide rail 21 and slides relative to the radial guide rail 21 to make the heating device 1 move radially relative to the bowl cover 2. In this embodiment, the guide assembly also includes a circumferential guide rail 22, which is arranged along the circumferential direction of the bowl cover 2. The circumferential guide rail 22 and the radial guide rail 21 are interconnected. Specifically, the guide slide 40 is connected to the circumferential guide rail 22 and can slide along the circumferential guide rail 22. In order to facilitate the movement of the heating device, the guide slide 40 is arranged in this embodiment. It is set to have two slip ring structures, namely the first slip ring and the second slip ring connected to each other. The second slip ring is connected to the top of the heating device 1. The connection point is located at the top of the heating device 1 to facilitate the movement of the heating device 1 and reduce obstacles. The first slip ring is always located in the radial guide rail 21 and the circumferential guide rail 22. The second slip ring is made of elastic material. When the first slip ring moves in the radial guide rail 21 or the circumferential guide rail 22, it can drive the second slip ring and the heating device 1 to move. When the movement direction of the heating device 1 switches between the radial and circumferential directions, the second slip ring can deform due to its own elastic material and follow the first slip ring into the corresponding track, so that the guide slide 40 can move flexibly between the radial guide rail 21 and the circumferential guide rail 22 of the bowl cover body. It provides more precise and multi-dimensional control, and the movement of the heating device 1 in the radial and circumferential directions is more accurate, so that the heating device 1 can heat the food in the bowl more delicately and evenly.

[0054] like Figure 1-2As shown, the heating device 1 in this embodiment is arranged in the insulation bowl. The heating device 1 includes a heating part 10 and a heat-conducting part 20. The heating part 10 and the heat-conducting part 20 are used to heat the food in the insulation bowl. The heat-conducting part 20 is provided with a through hole 201; the heating part 10 is sleeved on the outer side of the heat-conducting part 20, and along the axial direction of the heating device 1, the heat-conducting part 20 can slide relative to the heating part 10 so that the through hole 201 connects the insulation bowl and the inside of the heating device 1. When the food in the insulation bowl contains liquid such as soup, the heating part 10 of the heating device 1 extends into the insulation bowl to contact the food for direct heating. At this time, the heat-conducting part 20 does not need to move relative to the heating part 10 and remains in the initial position (i.e., it is sleeved on the heating part 10); when the food in the bowl is solid, after the heating device 1 is extended into the insulation bowl, the heat-conducting part 20 needs to move in the axial direction relative to the heating part 10 away from the heating part 10, and the through hole 201 is exposed and then heated by the flow of hot air. In this way, the heating method requirements of different types of food can be met. Specifically, the heating part 10 can realize the heating function by contacting with the food. The combination of the heating part 10 and the heat-conducting part 20 can more evenly transfer heat to the food in the insulation bowl. When the heat-conducting part 20 moves downward along the axial direction of the heating device 1 away from the heating part 10, the through hole 201 on the side wall of the heat-conducting part 20 is away from the wall surface of the heating part 10, thereby realizing ventilation between the inside of the insulation bowl and the heating device 1, so that the heating device 1 can transfer heat energy to heat the food by gas circulation. The heat transfer driven by the airflow also makes the heating effect of the food more uniform. For example, the heating effect of irregular shapes of foods with uneven heating effects can be achieved by contact heating. At the same time, the movement of the heat-conducting part 20 a certain distance also increases the length of the heating device 1, which better adapts to bowls of different depths and improves applicability and convenience of use.

[0055] like Figure 2 As shown, a plurality of through holes 201 are arranged, and the plurality of through holes 201 are arranged at intervals along the circumferential and radial directions of the side wall of the heat conducting part 20. The heat conducting part 20 includes an air supply member 202, and the air supply member 202 is arranged on the inner wall of the heat conducting part 20 and faces the through hole 201. The air supply member 202 is arranged as a fan, and the rotation of the fan can blow the hot air inside the heating device 1 into the bowl, so as to evenly heat the food in the bowl. This heating method is more friendly to solid food, such as fried chicken, and the heating is more uniform. A plurality of through holes 201 arranged at intervals can increase the heat transfer surface area, and the air supply member 202 can evenly blow the hot air into the insulation bowl to speed up the heating speed. The distribution of the through holes 201 arranged at intervals in the circumferential and radial directions can make the wind force evenly distributed, avoiding the problem of local overheating or insufficient heating.

[0056] like Figure 3-4As shown, the inner wall of the heating part 10 is provided with at least two guide members, and the axial direction of the guide members is parallel to the axial direction of the heating part 10. The inner wall of the heat-conducting part 20 is provided with at least two guide rails 203. The guide rails 203 are sleeved on the guide members and can slide relative to the guide members along the axial direction of the guide members. A single guide member is configured as a symmetrical guide rod 101. The first end 1011 of the symmetrical guide rod 101 is connected and fixed to the inner wall of the heating part 10, and the second end 1012 of the symmetrical guide rod 101 is spaced apart from the inside of the heating part 10 to avoid the heat-conducting part 20.

[0057] In this embodiment, the heating part 10 is configured as a heating rod with an internal cavity, and an even number of symmetrical guide rods 101 are arranged on the inner wall of the heating rod. The even number design can make the force more uniform and the movement process smoother; the first end 1011 of the symmetrical guide rod 101 is connected to the inner wall of the heat-conducting rod, and the second end 1012 of the symmetrical guide rod 101 is suspended and extended, and inserted into the guide rail 203 on the inner wall of the heat-conducting part 20. On the one hand, the suspended design can effectively reduce the overall weight, and can also avoid the heat-conducting part 20 so as not to affect the sliding distance. On the other hand, it can also make the outer wall of the heat-conducting part 20 and the inner wall of the heating part 10 fit closely. When heating food, food residues and the like will not enter the interior of the heating device 1, thereby protecting the cleanliness and hygiene of the interior of the heating device 1. The guide rail 203 of the heat-conducting part 20 is set as a linear guide rail 203 and its number is consistent with the number of symmetrical guide rods 101. The heat-conducting part 20 can realize rising and falling movements under the drive of the motor. When the heat-conducting part 20 moves downward along the heating rod, hot air can pass through the through hole 201, thereby realizing the heating function. At this time, the circumferential guide rail 22 can also be coordinated with the movement to enable the heating device 1 to make circumferential movement in the bowl for heating, thereby evenly heating the food.

[0058] Example 2

[0059] like Figure 5-6 As shown, the utility model also provides another embodiment. In this embodiment, part of the structure of the heating device 1 is different from that in the above embodiment, and the other parts are consistent with the embodiment 1, which are as follows:

[0060] In this embodiment, the heating part 10 and the heat conducting part 20 are connected by a thread 204, and the heat conducting part 20 is spirally rotated relative to the heating part 10 so that the through hole 201 connects the heat preservation bowl with the interior of the heating device 1. The inner wall of the heating part 10 is provided with a threaded guide rail 102, and the outer wall of the heat conducting part 20 is provided with a threaded guide rail 204, and the threaded guide rail 102 is spirally connected.

[0061] like Figure 5As shown, along the radial direction of the heat conducting part 20, the through hole 201 is arranged between two adjacent threads 204. The avoidance arrangement between the threads 204 and the through hole 201 can improve the stability of the device's own structure and connection. The inner wall of the heating part 10 is provided with an internal thread guide 102, and the outer wall of the heat conducting part 20 is provided with an external thread 204. The tight connection between the thread 204 and the thread guide 102 makes the connection between the heat conducting part 20 and the heating part 10 more secure, not easy to loosen and has good sealing, thereby improving the stability of the heating device 1.

[0062] When heating soup-like food in the insulation bowl, the position between the heat-conducting part 20 and the heating part 10 is relatively fixed, and the heating part 10 can move along the circumferential guide rail 22 or the radial guide rail 21 to heat the food; when heating solid food (such as fried chicken) in the insulation bowl, under the drive of the motor, the heat-conducting part 20 moves down along the heating part 10 in a spiral, so that the through hole 201 is exposed, and a ventilation connection is established between the interior of the heating device 1 and the insulation bowl. After the heat-conducting part 20 moves to the limit position, it stops descending, and then the heating mode is turned on. The delivery work blows hot air into the bowl to achieve uniform heating. After heating is completed, under the drive of the motor, the heat-conducting part 20 moves up along the heating part 10 in a spiral, and stops after moving to the limit position. At this point, a whole working cycle is completed. This method can flexibly realize the switching between the two heating methods of contact heating through the heating part 10 and hot air flow heating through the through hole 201, and provide a variety of heating methods to meet the heating needs of different foods.

[0063] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A heating device for keeping a bowl warm, characterized in that: The heating device is arranged in the heat preservation bowl, and the heating device comprises a heating part and a heat conducting part, the heating part and the heat conducting part are used to heat the food in the heat preservation bowl, and the heat conducting part is provided with a through hole; The heating part is sleeved on the outside of the heat conducting part. Along the axial direction of the heating device, the heat conducting part can slide relative to the heating part so that the through hole connects the heat preservation bowl and the inside of the heating device.

2. The heating device according to claim 1, characterized in that The through holes are provided in plurality and are spaced apart along the circumferential and radial directions of the side wall of the heat conducting part. The heat conducting part comprises an air supply member, which is provided on the inner side wall of the heat conducting part and faces the through holes.

3. The heating device according to claim 1, characterized in that The inner wall of the heating part is provided with at least two guide members, the axial direction of the guide members is parallel to the axial direction of the heating part, and the inner wall of the heat conducting part is provided with at least two guide rails, the guide rails are sleeved on the guide members and can slide relative to the guide members along the axial direction of the guide members.

4. The heating device according to claim 3, characterized in that The single guide member is configured as a symmetrical guide rod, a first end of the symmetrical guide rod is connected and fixed to the inner wall of the heating portion, and a second end of the symmetrical guide rod is spaced apart from the interior of the heating portion to avoid the heat conducting portion.

5. The heating device according to claim 1, characterized in that The heating part is threadedly connected to the heat conducting part, and the heat conducting part is spirally rotated relative to the heating part to make the through hole communicate with the heat preservation bowl and the interior of the heating device.

6. The heating device according to claim 5, characterized in that The inner wall of the heating part is provided with a threaded guide rail, and the outer wall of the heat conducting part is provided with a thread, and the thread is spirally connected with the threaded guide rail.

7. The heating device according to claim 6, characterized in that Along the radial direction of the heat conducting portion, the through holes are arranged between two adjacent threads at intervals.

8. A heat preservation bowl, characterized in that: The thermal insulation bowl includes the heating device according to any one of claims 1 to 7, and the thermal insulation bowl also includes a bowl cover and a motor, wherein the motor is arranged outside the bowl cover to be electrically connected to the heating device.

9. The heat-insulating bowl according to claim 8, characterized in that: The bowl cover is provided with a guide assembly, and the heating device is slidably connected with the bowl cover via the guide assembly.

10. The heat-insulating bowl according to claim 9, characterized in that: The guide assembly includes a radial guide rail, which is arranged along the radial direction of the heat preservation bowl. The heating device includes a sliding cover and a guide slide. The sliding cover is arranged at one end of the heating device facing the bowl cover and is slidably connected to the bowl cover. The guide slide is connected to the radial guide rail and slides relative to the radial guide rail to enable the heating device to move radially relative to the bowl cover. And / or, the guide assembly also includes a circumferential guide rail, which is arranged along the circumferential direction of the bowl cover, and the guide slide is connected to the circumferential guide rail and can slide along the circumferential guide rail, so that the heating device can move along the circumference of the bowl cover.

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