Dry burning prevention device for electric hot-water bag

Abstract

The utility model discloses an anti-dry-burning device for an electric hot-water bag, relates to the technical field of electric hot-water bags, and solves the technical problem that the electric hot-water bag in the prior art is easy to dry-burn. The anti-dry-burning device of the electric hot-water bag comprises a bag body which is provided with a cavity used for containing liquid; the heating core is fixedly arranged in the cavity, is electrically connected with the power supply and is used for heating the liquid; the overtemperature protector is fixedly installed in the cavity and attached to the top end of the heating core, and the overtemperature protector is electrically connected with the heating core; the first waterproof pieces are installed at the two ends of the heating core and used for preventing liquid from entering the heating core; and the second waterproof piece is arranged outside the overtemperature protector in a sleeving manner, and the second waterproof piece is used for preventing liquid from entering the overtemperature protector. Through the arrangement of the overtemperature protector attached to the heating core, the anti-dry-burning device of the electric hot-water bag can reduce the probability of dry burning of the electric hot-water bag, and therefore the safety of the electric hot-water bag is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric hot water bags, and particularly relates to an anti-dry-burning device for electric hot water bags. Background Art

[0002] Hot water bottles are essential winter heating products for warming hands and feet. While traditional hot water bottles require constant refilling, creating a hassle, electric hot water bottles, also known as electric warmers, are now available in various styles. To keep warm, users simply plug the bottle in, charge it, and heat it for a while. The bottle then generates enough heat to keep them warm.

[0003] However, after long-term use, the water in the electric hot water bag will decrease. When there is no water in the bag, it will dry out. Once the heating wire (or heating tube) drys out, the heating wire (or heating tube) bracket and the bag body of the electric hot water bag will easily melt and burn, causing a fire. Utility Model Content

[0004] The utility model provides an anti-dry-burning device for an electric hot water bag, which is used to solve the technical problem that dry-burning easily occurs in the electric hot water bag in the prior art.

[0005] The utility model is achieved through the following technical solutions:

[0006] An anti-dry-burning device for an electric hot water bag, comprising:

[0007] The bag body has a cavity for containing liquid;

[0008] A heating core is fixedly installed in the cavity and electrically connected to a power source, and the heating core is used to heat the liquid;

[0009] An over-temperature protector is fixedly installed in the cavity and abuts against the top of the heating core, and the over-temperature protector is electrically connected to the heating core;

[0010] a first waterproof member installed at both ends of the heating core, the first waterproof member being used to prevent the liquid from entering the heating core;

[0011] The second waterproof component is sleeved outside the over-temperature protector, and the second waterproof component is used to prevent the liquid from entering the over-temperature protector.

[0012] Furthermore, the first waterproof component includes:

[0013] plate body;

[0014] There are two mounting tubes, which are fixedly mounted on one side of the plate body, and the two ends of the heating core are respectively inserted into the two mounting tubes;

[0015] There are two sealing cylinders, both of which are installed on the side of the plate body opposite to the mounting cylinder, and the two sealing cylinders are arranged in a one-to-one correspondence with the two mounting cylinders. The two sealing cylinders are respectively connected to the corresponding mounting cylinders, and the two ends of the heating core respectively pass through the two mounting cylinders and extend into the two sealing cylinders;

[0016] The first sealing body is filled in the two sealing cylinders.

[0017] Furthermore, the inner diameter of the mounting cylinder gradually decreases from an end away from the sealing cylinder to an end close to the sealing cylinder.

[0018] Furthermore, an annular groove is provided on the outer side wall of the heating core.

[0019] Furthermore, there are multiple annular grooves, and the multiple annular grooves are evenly distributed at both ends of the heating core, and the multiple annular grooves at either end of the heating core are spaced apart along the axial direction of the sealing tube.

[0020] Furthermore, the second waterproof component includes:

[0021] A mounting block having a mounting cavity, wherein the mounting block is mounted on the plate body, and one end of the mounting block is in contact with the heating core, and the over-temperature protector is mounted on the end of the mounting block in contact with the heating core;

[0022] The second sealing body is filled in the installation cavity.

[0023] Furthermore, it also includes a protective cover that is detachably mounted on one side of the plate body and sleeved outside the heating core, and the protective cover is fixedly mounted in the cavity, and the protective cover is dug out to be provided with a plurality of water-permeable holes.

[0024] Furthermore, it also includes:

[0025] an external connecting rod, one end of which is fixedly mounted on the protective sleeve;

[0026] A fixing belt, both ends of which are fixedly mounted on the inner side wall of the bag body, a gap being provided between the middle portion of the fixing belt and the inner side wall of the bag body, and the external connecting rod being clamped in the gap.

[0027] Furthermore, there are two external connecting rods and two fixing belts, one end of each of the two external connecting rods is fixedly mounted on the protective cover, and the two external connecting rods are respectively clamped between the two fixing belts and the bag body.

[0028] Furthermore, it also includes a connecting rod, both ends of which are fixedly mounted on the other ends of the two external rods.

[0029] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0030] The electric hot water bag anti-dry burning device provided by the utility model includes a bag body, a heating core, an over-temperature protector, a first waterproof part and a second waterproof part. The bag body has a cavity, the cavity is used to contain liquid, the heating core is fixedly installed in the cavity and electrically connected to the power supply, the heating core is fixedly installed in the cavity and electrically connected to the power supply, the heating core is used to heat the liquid, the over-temperature protector is fixedly installed in the cavity and is attached to the top of the heating core, and the over-temperature protector is electrically connected to the heating core, the first waterproof part is installed at both ends of the heating core, the first waterproof part is used to prevent liquid from entering the heating core, the second waterproof part is sleeved outside the over-temperature protector, and the second waterproof part is used to prevent liquid from entering the over-temperature protector.

[0031] Through the above structure, when the electric hot water bag anti-dry burning device provided by the utility model is used, when the electric hot water bag needs to be heated, the electric hot water bag is placed horizontally on a plane, and the heating core and the over-temperature protector fixedly installed in the bag body are both located in the liquid, and the heating core and the over-temperature protector are fixedly installed in the bag body, so that the heating core and the over-temperature protector are prevented from moving in the bag body during the heating process, and the over-temperature protector is always attached to the top of the heating core. In this way, after long-term use, when the liquid in the bag body is reduced to below the interface between the heating core and the over-temperature protector, or when the liquid in the electric hot water bag is located below the interface between the heating core and the over-temperature protector due to improper placement during heating, the heating core is exposed above the liquid surface, resulting in The surface temperature of the heating core rises rapidly, and the over-temperature protector will cut off the line between the heating core and the power supply after detecting the temperature abnormality. In this way, the temperature of the heating core can be directly monitored by the over-temperature protector directly attached to the heating core, so as to judge the liquid level in the bag, thereby avoiding the electric hot water bag from dry burning. By setting the first waterproof part and the second waterproof part, the probability of liquid entering the heating core and the over-temperature protector is reduced, thereby reducing the probability of damage to the heating core and the over-temperature protector, and at the same time reducing the probability of accidents. Therefore, by setting the over-temperature protector attached to the heating core, the electric hot water bag anti-dry burning device provided by the utility model can reduce the probability of dry burning of the electric hot water bag, thereby improving the safety of the electric hot water bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the accompanying drawings:

[0033] Figure 1 A schematic diagram of the structure of the electric hot water bag anti-dry burning device provided by an embodiment of the utility model;

[0034] Figure 2 A cross-sectional view of the anti-dry-burn device for an electric hot water bag provided in an embodiment of the utility model;

[0035] Figure 3 Another structural diagram of the electric hot water bag anti-dry burning device provided by an embodiment of the utility model;

[0036] Figure 4 A schematic diagram of the installation structure of the heating core, the first waterproof component and the second waterproof component provided in an embodiment of the present utility model;

[0037] Figure 5 Another cross-sectional view of the electric hot water bag anti-dry-burning device provided by an embodiment of the utility model;

[0038] Figure 6 for Figure 5 A partial enlarged view of area A in FIG;

[0039] Figure 7 Another cross-sectional view of the electric hot water bag anti-dry burning device provided in an embodiment of the utility model.

[0040] Markings and corresponding parts names in the accompanying drawings:

[0041] 1-bag body, 11-cavity, 2-heating core, 21-annular groove, 3-over-temperature protector, 4-first waterproof part, 41-plate body, 42-mounting cylinder, 43-sealing cylinder, 44-first sealing body, 5-second waterproof part, 51-mounting block, 52-second sealing body, 6-protective cover, 61-water permeable hole, 7-external rod, 8-fixing belt, 9-connecting rod. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The schematic implementation methods of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0043] It should be noted that when a component is referred to as being “fixed to” or “disposed on” another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being “connected to” another component, it can be directly or indirectly connected to the other component.

[0044] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0046] Example:

[0047] This embodiment provides an electric hot water bag dry-burn prevention device, which is used to solve the technical problem of electric hot water bags being prone to dry-burning in the prior art. The electric hot water bag dry-burn prevention device includes a bag body 1, a heating core 2, an over-temperature protector 3, a first waterproof member 4, and a second waterproof member 5, wherein:

[0048] The bag body 1 has a cavity 11, which is used to hold liquid. Optionally, the bag body 1 includes an inner layer and an outer layer. The inner layer is a structural member made of PVC material, which has the advantages of being waterproof, high temperature resistant, lightweight, soft and durable. The outer layer is a structural member made of velvet, which makes the bag body 1 more comfortable and more heat-insulating.

[0049] The heating core 2 is fixedly installed in the cavity 11 and electrically connected to the power supply. The heating core 2 is used to heat the liquid in the bag body 1. Specifically, the heating core 2 includes a spiral portion and a straight portion. There are two straight portions, and one end of the two straight portions is fixedly installed at both ends of the spiral portion. In this way, the fixedly installed heating core 2 can prevent the heating type from shifting in the bag body 1 during the heating process of the electric hot water.

[0050] The over-temperature protector 3 is fixedly installed in the cavity 11 and is attached to the top of the heating core 2. That is, when the hot water bag is placed horizontally for charging, the over-temperature protector 3 is located above the heating core 2 and is attached to the surface of the heating core 2, and the over-temperature protector 3 is electrically connected to the heating core 2. In this way, through the fixed over-temperature protector 3, the over-temperature protector 3 is always located above the heating core 2 and is attached to the heating core 2 during the heating process of the electric hot water bag. When the liquid level in the bag drops to the junction surface between the heating core 2 and the over-temperature protector 3, the upper surface of the heating core 2 is exposed to the air, resulting in an abnormal temperature of the heating core 2. The over-temperature protector 3 attached to the upper surface of the heating core will cut off the connection between the heating core 2 and the power supply after detecting the abnormal temperature of the heating core 2, so that the heating core 2 stops heating. In this way, the heating will stop when the water level in the bag body 1 is low, thereby preventing the electric hot water bag from dry burning.

[0051] The first waterproof component 4 is installed at both ends of the heating core 2, that is, the first waterproof component 4 is installed at the other end of the straight portion. The first waterproof component 4 is used to prevent liquid from entering the heating core 2. Through the setting of the first waterproof component 4, the probability of liquid entering the heating core 2 is reduced, thereby extending the service life of the heating core 2.

[0052] The second waterproof component 5 is mounted on the outside of the over-temperature protector 3. The second waterproof component 5 is used to prevent liquid from entering the over-temperature protector 3. By setting the second waterproof component 5, the probability of liquid entering the over-temperature protector 3 is reduced, thereby extending the service life of the over-temperature protector 3.

[0053] When the electric hot water bag is in a dry-burning state and the temperature is too low, the hot water bag will not be heated up, and the hot water bag will not be heated up, so the hot water bag will not be heated up, and the temperature will not be too high. The surface temperature of the heating core 2 rises rapidly, and the over-temperature protector 3 will cut off the line between the heating core 2 and the power supply after detecting the temperature abnormality. In this way, the temperature of the heating core 2 can be directly monitored by the over-temperature protector 3 directly attached to the heating core 2, so as to judge the liquid level in the bag, thereby avoiding the electric hot water bag from dry burning. The setting of the first waterproof part 4 and the second waterproof part 5 reduces the probability of liquid entering the heating core 2 and the over-temperature protector 3, thereby reducing the probability of damage to the heating core 2 and the over-temperature protector 3, and at the same time reducing the probability of accidents. Therefore, by setting the over-temperature protector 3 attached to the heating core 2, the electric hot water bag anti-dry burning device provided by the utility model can reduce the probability of dry burning of the electric hot water bag, thereby improving the safety of the electric hot water bag.

[0054] An optional implementation of this embodiment is as follows: the first waterproof member 4 includes a plate body 41, a mounting cylinder 42, a sealing cylinder 43 and a first sealing body 44, wherein:

[0055] The plate body 41 is a rectangular plate body 41 and is made of high temperature resistant material.

[0056] There are two mounting tubes 42 , which are fixedly mounted on one side of the plate body 41 . Both ends of the heating core 2 are respectively inserted into the two mounting tubes 42 , and the mounting tubes 42 are also structural components made of high-temperature resistant materials.

[0057] There are two sealing cylinders 43, and both sealing cylinders 43 are installed on the side of the plate body 41 opposite to the mounting cylinder 42, and the two sealing cylinders 43 are arranged in a one-to-one correspondence with the two mounting cylinders 42. The two sealing cylinders 43 are respectively connected to the corresponding mounting cylinders 42, and the two ends of the heating core 2 respectively pass through the two mounting cylinders 42 and extend into the two sealing cylinders 43, and the sealing cylinder 43 is also a structural member made of high-temperature resistant material. Specifically, two mounting holes adapted to the heating core 2 are opened on one side of the plate body 41 close to the mounting cylinder 42, and the two ends of the heating core 2 respectively pass through the two mounting holes and extend into the sealing cylinder 43.

[0058] Optionally, the inner diameter of the mounting cylinder 42 gradually decreases from the end away from the sealing cylinder 43 to the end close to the sealing cylinder 43, and the inner diameter of the small diameter end of the mounting cylinder 42 is equal to the outer diameter of the heating core 2. In this way, it is not only convenient to insert the mounting cylinder 42 into the mounting cylinder 42, but also reduces the probability of liquid entering the heating core 2 from the connection between the mounting cylinder 42 and the heating core 2.

[0059] The first sealing body 44 is filled in the two sealing tubes 43 . Thus, the two ends of the heating core 2 are isolated from the liquid by the provision of the first sealing body 44 , thereby reducing the probability of liquid entering the heating core 2 .

[0060] Optionally, the first sealing body 44 is a sealant.

[0061] An optional implementation of this embodiment is as follows: an annular groove 21 is provided on the outer side wall of the heating core 2. Thus, the possibility of liquid entering the heating core 2 is further reduced by the provision of the annular groove 21.

[0062] Optionally, there are multiple annular grooves 21, and the multiple annular grooves 21 are evenly distributed at both ends of the heating core 2, and the multiple annular grooves 21 at either end of the heating core 2 are arranged at intervals along the axial direction of the sealing tube 43. In this way, by setting the multiple annular grooves 21, the probability of liquid entering the heating core 2 is further reduced.

[0063] An optional implementation of this embodiment is as follows: the second waterproof member 5 includes a mounting block 51 and a second sealing body 52, wherein:

[0064] The mounting block 51 has a mounting cavity. The mounting block 51 is mounted on the plate body 41, and one end of the mounting block 51 is in contact with the heating core 2. The over-temperature protector 3 is mounted on the end of the mounting block 51 in contact with the heating core 2. Through the setting of the mounting block 51, it is easier to install the over-temperature protector 3 and the heating core 2 together, and it is also easier to separate the over-temperature protector 3 from the liquid.

[0065] The second sealing body 52 is filled in the installation cavity. Thus, the installation block 51 is sealed in the installation block 51 by the provision of the second sealing body 52 , thereby reducing the probability of liquid entering the over-temperature protector 3 .

[0066] An optional implementation of this embodiment is as follows: it also includes a protective cover 6, which is detachably mounted on one side of the plate body 41 and is sleeved on the outside of the heating core 2, that is, the protective cover 6 is sleeved on the spiral portion, and the protective cover 6 is fixedly mounted in the cavity 11, and a plurality of water-permeable holes 61 are provided on the outer wall of the protective cover 6. In this way, the heating core 2 is separated from the bag body 1 by the provision of the protective cover 6 to prevent the bag body 1 from being damaged by high temperature. At the same time, the provision of the protective cover 6 facilitates the indirect fixing of the heating core 2 in the bag body 1, and the provision of the water-permeable holes 61 enables the liquid to directly contact the heating core 2, thereby improving the efficiency of heating the liquid.

[0067] An optional implementation of this embodiment is as follows: it further includes an external connecting rod 7 and a fixing belt 8, wherein:

[0068] One end of the external connecting rod 7 is fixedly mounted on the protective cover 6 .

[0069] The two ends of the fixing belt 8 are fixedly mounted on the inner wall of the bag body 1. There is a gap between the middle of the fixing belt 8 and the inner wall of the bag body 1, and the external rod 7 is clamped in the gap. In this way, by setting the fixing belt 8, the external rod 7 is fixed on the bag body 1, thereby fixing the protective cover 6 fixed to the external rod 7 in the bag body 1, so that the over-temperature protector 3 of the electric hot water bag is always located above the heating core 2 during the heating process, thereby avoiding failure of the over-temperature protector 3.

[0070] Optionally, there are two external rods 7 and two fixing straps 8, one end of each of the two external rods 7 is fixedly mounted on the protective cover 6, and the two external rods 7 are respectively clamped between the two fixing straps 8 and the bag body 1. In this way, through the arrangement of the two external rods 7 and the fixing straps 8, the protective cover 6 can be more firmly fixed in the bag body 1.

[0071] Optionally, a connecting rod 9 is further included, and both ends of the connecting rod 9 are fixedly mounted on the other ends of the two external rods 7 . In this way, the setting of the connecting rod 9 can prevent the external rods 7 from falling off from the fixing belt 8 .

[0072] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific implementation method of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. An anti-dry burning device for an electric hot water bag, characterized in that: include: The bag body (1) has a cavity (11), and the cavity (11) is used to contain liquid; A heating core (2) is fixedly mounted in the cavity (11) and electrically connected to a power source, the heating core (2) being used to heat the liquid; An over-temperature protector (3) is fixedly mounted in the cavity (11) and abuts against the top of the heating core (2), and the over-temperature protector (3) is electrically connected to the heating core (2); a first waterproof member (4) mounted at both ends of the heating core (2), the first waterproof member (4) being used to prevent the liquid from entering the heating core (2); The second waterproof component (5) is sleeved outside the over-temperature protector (3), and the second waterproof component (5) is used to prevent the liquid from entering the over-temperature protector (3).

2. The electric hot water bag anti-dry burning device according to claim 1, characterized in that: The first waterproof member (4) comprises: Plate(41); There are two mounting tubes (42), the two mounting tubes (42) are fixedly mounted on one side of the plate body (41), and the two ends of the heating core (2) are respectively inserted into the two mounting tubes (42); There are two sealing cylinders (43), both of which are installed on the side of the plate body (41) opposite to the mounting cylinder (42), and the two sealing cylinders (43) are arranged in a one-to-one correspondence with the two mounting cylinders (42). The two sealing cylinders (43) are respectively connected to the corresponding mounting cylinders (42), and the two ends of the heating core (2) respectively pass through the two mounting cylinders (42) and extend into the two sealing cylinders (43); The first sealing body (44) is filled in the two sealing cylinders (43).

3. The electric hot water bag anti-dry burning device according to claim 2, characterized in that: The inner diameter of the mounting cylinder (42) gradually decreases from an end away from the sealing cylinder (43) to an end close to the sealing cylinder (43).

4. The electric hot water bag anti-dry burning device according to claim 3, characterized in that: An annular groove (21) is provided on the outer side wall of the heating core (2).

5. The electric hot water bag anti-dry burning device according to claim 4, characterized in that: There are multiple annular grooves (21), and the multiple annular grooves (21) are evenly distributed at both ends of the heating core (2), and the multiple annular grooves (21) at either end of the heating core (2) are spaced apart along the axial direction of the sealing cylinder (43).

6. The electric hot water bag anti-dry burning device according to claim 2, characterized in that: The second waterproof member (5) comprises: A mounting block (51) has a mounting cavity, the mounting block (51) is mounted on the plate body (41), and one end of the mounting block (51) is in contact with the heating core (2), and the over-temperature protector (3) is mounted on the end of the mounting block (51) in contact with the heating core (2); The second sealing body (52) is filled in the installation cavity.

7. The electric hot water bag anti-dry burning device according to claim 2, characterized in that: It also includes a protective cover (6) which is detachably mounted on one side of the plate body (41) and sleeved outside the heating core (2), and the protective cover (6) is fixedly mounted in the cavity (11), and the outer side wall of the protective cover (6) is provided with a plurality of water-permeable holes (61).

8. The electric hot water bag anti-dry burning device according to claim 7, characterized in that: Also includes: an external connecting rod (7), one end of which is fixedly mounted on the protective sleeve (6); A fixing belt (8), both ends of which are fixedly connected to the inner wall of the bag body (1), a gap is provided between the middle of the fixing belt (8) and the inner wall of the bag body (1), and the external connecting rod (7) is clamped in the gap.

9. The electric hot water bag anti-dry burning device according to claim 8, characterized in that: The number of the external connecting rods (7) and the number of the fixing belts (8) are both two, one end of each of the two external connecting rods (7) is fixedly mounted on the protective cover (6), and the two external connecting rods (7) are respectively clamped between the two fixing belts (8) and the bag body (1).

10. The electric hot water bag anti-dry burning device according to claim 9, characterized in that: It also includes a connecting rod (9), both ends of which are fixedly mounted on the other ends of the two external connecting rods (7).

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