Main machine of water heating blanket and water heating blanket

Abstract

The utility model provides a main machine of a water heating blanket and the water heating blanket, the main machine of the water heating blanket comprises a water tank and a tank cover assembly, the water tank is provided with a water containing cavity, and a water injection opening is formed in the side of the water containing cavity; the box cover assembly comprises a cover body and a sealing ball, the cover body is detachably connected to the water injection opening and provided with an exhaust cavity, a first exhaust hole and a second exhaust hole are formed in the two ends of the exhaust cavity, the first exhaust hole is located in the end, close to the water containing cavity, of the exhaust cavity, and the second exhaust hole is located in the end, away from the water containing cavity, of the exhaust cavity. The caliber of the first exhaust hole and the caliber of the second exhaust hole are both smaller than the ball diameter of the sealing ball. Liquid in the water tank in the main machine of the water heating blanket is not prone to overflowing from the tank cover assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heating electric appliances, in particular to a water heating blanket host and a water heating blanket. BACKGROUND

[0002] The water heating blanket is a bed heating product using water as a heat conducting medium, which mainly comprises a host and a blanket. The blanket is provided with a circulating water channel, and the host can heat water and drive the heated water to flow in the circulating water channel to transfer heat.

[0003] Since the host needs to heat water, a lot of steam will be generated in the host when heated to a certain extent, resulting in an increase in the pressure in the host. Therefore, an air vent is arranged on the host, which is in communication with the outside, so as to discharge the steam in the host. However, when the host is tilted or inverted, the water in the host will flow out through the air vent, thereby reducing the use convenience of the water heating blanket. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the present application provides a water heating blanket host and a water heating blanket to solve the problems in the prior art.

[0005] In a first aspect, the present application provides a water heating blanket host, which comprises a water tank and a tank cover assembly. The water tank has a water containing cavity, and the side of the water containing cavity is provided with a water inlet.

[0006] The tank cover assembly comprises a cover body and a sealing ball. The cover body is detachably connected to the water inlet. The cover body has an exhaust cavity, and the two ends of the exhaust cavity are provided with a first exhaust hole and a second exhaust hole. The first exhaust hole is located at one end of the exhaust cavity close to the water containing cavity, and the second exhaust hole is located at the other end of the exhaust cavity away from the water containing cavity. The sealing ball is movably arranged in the exhaust cavity. The diameters of the first exhaust hole and the second exhaust hole are both smaller than the diameter of the sealing ball.

[0007] The host of the water heating blanket provided by the embodiments of the present application comprises a water tank and a tank cover assembly, the water tank comprises a water storage cavity and a water inlet, and the tank cover assembly comprises a cover body and a sealing ball, the cover body comprises an exhaust cavity, a first exhaust hole and a second exhaust hole. The water storage cavity is arranged to store liquid, the water inlet is arranged to facilitate the addition of liquid to the water storage cavity, the cover body is arranged to block or open the water inlet, the exhaust cavity, the first exhaust hole and the second exhaust hole are arranged on the cover body to exhaust the water storage cavity, so as to balance the air pressure of the water storage cavity, the sealing ball is arranged in the exhaust cavity, and the diameters of the first exhaust hole and the second exhaust hole are both smaller than the diameter of the sealing ball, so as to limit the movement range of the sealing ball in the exhaust cavity. In this way, the sealing ball can block the first exhaust hole when the host of the water heating blanket is in an upright state, and the sealing ball can block the second exhaust hole when the host of the water heating blanket is in an inclined or inverted state, thereby effectively preventing liquid from flowing out of the first exhaust hole or the second exhaust hole, and improving the use convenience of the host of the water heating blanket.

[0008] In a possible implementation, the diameter of the exhaust cavity is greater than the diameter of the sealing ball.

[0009] In this way, a gap is formed between the sealing ball and the exhaust cavity, the sealing ball can move in the exhaust cavity when the placement state of the host of the water heating blanket changes, and when the air pressure of the water storage cavity increases, the air pressure can overcome the gravity of the sealing ball, thereby lifting the sealing ball to open the first exhaust hole, and thereby allowing steam to be discharged from the first exhaust hole, the gap between the sealing ball and the exhaust cavity and the second exhaust hole.

[0010] In a possible implementation, the cover body comprises a first cover body and a second cover body connected to each other, and the first cover body is detachably connected to the water tank.

[0011] In this way, the first cover body and the second cover body can be machined and formed respectively, then the sealing ball is placed in the exhaust cavity, and then the first cover body and the second cover body are connected to form the cover body, thereby facilitating the machining and assembly of the tank cover assembly.

[0012] In a possible implementation, the first cover body has a first exhaust cavity, the second cover body has a second exhaust cavity, and the first exhaust cavity and the second exhaust cavity jointly form the exhaust cavity.

[0013] The first exhaust hole is located at one end of the first exhaust cavity away from the second exhaust cavity, and the second exhaust hole is located at one end of the second exhaust cavity away from the first exhaust cavity.

[0014] In this way, after the first cover body and the second cover body are connected, the first exhaust cavity and the second exhaust cavity can jointly form the exhaust cavity, thereby facilitating the placement of the sealing ball in the exhaust cavity, and the first exhaust hole and the second exhaust hole can be arranged at two ends of the exhaust cavity.

[0015] In a possible implementation, the first air vent has a first sealing surface at one end away from the water containing cavity; and / or, the second air vent has a second sealing surface at one end towards the water containing cavity.

[0016] In this way, when the sealing ball moves towards the first air vent, the sealing ball can abut against the first sealing surface, so as to block the first air vent, thereby preventing liquid from leaking from the first air vent; when the sealing ball moves towards the second air vent, the sealing ball can abut against the second sealing surface, so as to block the second air vent, thereby preventing liquid from leaking from the second air vent.

[0017] In a possible implementation, the first sealing surface and the second sealing surface are both concave curved surfaces that are fitted to the spherical surface of the sealing ball.

[0018] In this way, the first sealing surface and the second sealing surface can be more closely abutted against the spherical surface of the sealing ball, thereby improving the sealing between the sealing ball and the first sealing surface and improving the sealing between the sealing ball and the second sealing surface.

[0019] In a possible implementation, the first cover body has a mounting groove, and the second cover body is arranged in the mounting groove.

[0020] In this way, the second cover body can be connected to the first cover body through the mounting groove, and the second cover body can not protrude from the surface of the first cover body, thereby improving the aesthetics of the cover body.

[0021] In a possible implementation, the first cover body includes a first connecting portion and a knob portion that are connected to each other, the first connecting portion is connected to the water tank, and the first air vent is located in the knob portion.

[0022] In this way, the knob portion can be used for hand operation, so as to rotate the first connecting portion to connect the first connecting portion to the water tank to block the water inlet, or to disconnect the first connecting portion from the water tank to open the water inlet.

[0023] In a possible implementation, the second cover body includes a second connecting portion and a flexible air vent portion that are connected to each other, the second connecting portion is connected to the first cover body, and the second air vent is located in the flexible air vent portion.

[0024] In this way, when the sealing ball abuts against one end of the second air vent towards the second air vent cavity under the action of its own gravity, the one end of the second air vent towards the second air vent cavity can be elastically deformed, thereby improving the fitting degree between the sealing ball and the second air vent, and improving the sealing between the sealing ball and the second air vent.

[0025] In one possible implementation, the main unit of the water heating blanket also includes a shell and a heating element. The water tank is arranged in the shell, and at least part of the cover protrudes from the shell. The heating element is arranged in the water chamber and is constructed to heat the liquid in the water chamber.

[0026] In this way, the heating element can be used to heat the liquid in the water holding chamber, thereby enabling the main unit of the water heating blanket to realize the function of heating the liquid. The water tank can be arranged in the shell to improve the appearance of the main unit of the water heating blanket. The cover body can protrude from the shell to facilitate operation of the cover body, thereby opening or closing the water inlet.

[0027] In a second aspect, the present application provides a water-heating blanket, comprising a blanket and a main unit of the water-heating blanket provided in the first aspect, wherein the main unit of the water-heating blanket is connected to the blanket.

[0028] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by the main unit and water-heating blanket provided by the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] Figure 1 A schematic structural diagram of the main unit of the water heating blanket provided in an embodiment of the present application;

[0031] Figure 2 for Figure 1 Exploded diagram;

[0032] Figure 3 A schematic structural diagram of a water tank and a tank cover assembly in a main unit of a water heating blanket provided in an embodiment of the present application;

[0033] Figure 4 A schematic diagram of the state of the main unit of the water heating blanket provided by an embodiment of the present application when the box cover assembly is placed upright;

[0034] Figure 5 for Figure 4 A partial enlarged view of the dotted circle in the middle;

[0035] Figure 6 A schematic diagram of the state of the main unit of the water heating blanket provided in an embodiment of the present application when the box cover assembly is inverted;

[0036] Figure 7 For Figure 6 Partial enlarged view of the middle virtual loop;

[0037] Figure 8 For Figure 1 Exploded view of the middle tank cover assembly.

[0038] Explanation of reference signs:

[0039] 100 - water tank; 110 - water containing cavity; 120 - water filling port;

[0040] 200 - tank cover assembly; 210 - cover body; 210a - first cover body; 211a - first exhaust cavity; 212a - mounting groove; 213a - first connecting part; 214a - twist part; 210b - second cover body; 211b - second exhaust cavity; 211 - exhaust cavity; 212 - first exhaust hole; 2121 - first sealing surface; 213 - second exhaust hole; 2131 - second sealing surface; 220 - sealing ball;

[0041] 300 - shell; 310 - first shell; 320 - second shell;

[0042] 400 - heating element. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more details below in combination with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference signs represent the same or similar components or components with the same or similar functions throughout. The described embodiments are part of the embodiments of the present application, but not all the embodiments. The embodiments described below in combination with the drawings are exemplary and are intended to explain the present application, but cannot be understood as a limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application. The embodiments of the present application will be described in detail below in combination with the drawings.

[0044] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms “mounting”, “connection” and “connection” should be understood in a broad sense, for example, it can be fixed connection, or indirect connection through an intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] In the description of the present application, it needs to be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0046] The terms "first", "second", "third" (if any) in the description and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a particular order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0047] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or display including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or displays.

[0048] The water heating blanket is a bed heating product using water as a heat conducting medium. The water heating blanket mainly comprises a host and a blanket. The blanket is provided with a circulating water channel. The host can heat water and drive the heated water to flow in the circulating water channel, thereby transferring heat.

[0049] Since the host needs to heat water, a lot of steam will be generated in the host when heated to a certain extent, resulting in an increase in the pressure in the host. Therefore, an air vent is arranged on the host, which is in communication with the outside, thereby allowing the steam in the host to be discharged. However, when the host is tilted or inverted, the water in the host will flow out through the air vent, thereby reducing the use convenience of the water heating blanket.

[0050] Therefore, the present application provides a host of a water heating blanket and a water heating blanket. The host of the water heating blanket is provided with a water tank and a tank cover assembly. The tank cover assembly comprises a cover body and a sealing ball. The sealing ball can change with the placement posture of the host of the water heating blanket, thereby plugging the first air vent or the second air vent of the cover body, so as to prevent the liquid in the water tank from leaking from the first air vent or the second air vent.

[0051] Referring to Figure 1 The present application provides a water heating blanket, which comprises a host of the water heating blanket and a blanket. The host of the water heating blanket is connected with the blanket.

[0052] The blanket can include a blanket body and a circulation pipe arranged in the blanket body, and the circulation pipe is communicated with the main machine of the water heating blanket.

[0053] The blanket body can be made of soft fabric to provide comfortable touch for the user, and the circulation pipe is arranged in the blanket body in a meandering manner to uniformly heat or cool the surface of the blanket body, thereby providing the required warm or cool effect.

[0054] After the main machine of the water heating blanket and the circulation pipe are connected, a closed liquid circulation system can be formed, the main machine of the water heating blanket can heat or cool the liquid and provide driving force for the liquid, thereby driving the liquid to circulate in the circulation pipe, thereby continuously delivering heat.

[0055] Referring to Figures 1 to 7 Based on the above embodiment, the embodiment of the present application further provides a main machine of a water heating blanket, which includes a water tank 100 and a tank cover assembly 200, the water tank 100 has a water storage cavity 110, and the water storage cavity 110 has a water inlet 120 on one side.

[0056] The tank cover assembly 200 includes a cover body 210 and a sealing ball 220, the cover body 210 is detachably connected to the water inlet 120, the cover body 210 has an exhaust cavity 211, the exhaust cavity 211 has a first exhaust hole 212 and a second exhaust hole 213 at two ends, the first exhaust hole 212 is located at one end of the exhaust cavity 211 close to the water storage cavity 110, the second exhaust hole 213 is located at one end of the exhaust cavity 211 away from the water storage cavity 110, the sealing ball 220 is movably arranged in the exhaust cavity 211, and the diameters of the first exhaust hole 212 and the second exhaust hole 213 are both smaller than the diameter of the sealing ball 220.

[0057] In the embodiment, the water storage cavity 110 is used to store liquid, so that the liquid in the water storage cavity 110 is heated and then flows into the blanket. The water inlet 120 is used to add water to the water storage cavity 110, so that when the liquid in the water storage cavity 110 is insufficient, the user can add water to the water storage cavity 110 through the water inlet 120. When the cover body 210 is connected to the water tank 100, the cover body 210 is used to block the water inlet 120 to prevent foreign matters from entering the water storage cavity 110 through the water inlet 120, or when the cover body 210 is separated from the water tank 100, the water inlet 120 can be opened to facilitate the user to add water to the water storage cavity 110.

[0058] It can be understood that when the main machine of the water heating blanket is working, the liquid in the water containing cavity 110 is heated to a boiling state, and a large amount of steam is generated, which increases the air pressure of the water containing cavity 110. Therefore, in order to balance the air pressure of the water containing cavity 110, the cover body 210 is provided with an exhaust cavity 211, and the exhaust cavity 211 is provided with a first exhaust hole 212 at one end close to the water containing cavity 110, and a second exhaust hole 213 at the other end away from the water containing cavity 110. In this way, the water containing cavity 110, the first exhaust hole 212, the exhaust cavity 211 and the second exhaust hole 213 are sequentially communicated, so that the steam generated by the water containing cavity 110 can flow out through the first exhaust hole 212, the exhaust cavity 211 and the second exhaust hole 213 in sequence.

[0059] When the main machine of the water heating blanket is stopped, in order to prevent the liquid in the water tank 100 from flowing out when the main machine of the water heating blanket is in a tilted or inverted state, a sealing ball 220 can be arranged in the exhaust cavity 211. The diameter of the sealing ball 220 is greater than the diameter of the first exhaust hole 212 and the diameter of the second exhaust hole 213. In this way, when the water tank 100 is upright or slightly tilted, the sealing ball 220 can block the first exhaust hole 212 by using its own gravity, so that the first exhaust hole 212 and the exhaust cavity 211 are disconnected, thereby preventing the liquid in the water tank 100 from flowing out of the first exhaust hole 212. When the water tank 100 is tilted or inverted, the sealing ball 220 can block the second exhaust hole 213 by using its own gravity, so that the exhaust cavity 211 and the second exhaust hole 213 are disconnected, thereby preventing the liquid in the water tank 100 from flowing out of the second exhaust hole 213.

[0060] When the main machine of the water heating blanket is working, and the main machine of the water heating blanket is upright, when the air pressure of the water containing cavity 110 increases to a level that can lift the sealing ball 220, the sealing ball 220 can open the first exhaust hole 212, so that the first exhaust hole 212, the exhaust cavity 211 and the second exhaust hole 213 are sequentially communicated, and the steam can flow out through the first exhaust hole 212, the gap between the sealing ball 220 and the exhaust cavity 211, and the second exhaust hole 213. Therefore, the presence of the sealing ball 220 does not affect the normal exhaust of the water tank 100, and the sealing ball 220 can effectively prevent the liquid from overflowing when the main machine of the water heating blanket is tilted or inverted.

[0061] The water heating blanket host provided by the embodiment of the application comprises a water tank 100 and a tank cover assembly 200. The water tank 100 comprises a water storage cavity 110 and a water inlet 120. The tank cover assembly 200 comprises a cover body 210 and a sealing ball 220. The cover body 210 comprises an exhaust cavity 211, a first exhaust hole 212 and a second exhaust hole 213. The water storage cavity 110 is arranged to store liquid. The water inlet 120 is arranged to facilitate the addition of liquid to the water storage cavity 110. The cover body 210 is arranged to block or open the water inlet 120. The exhaust cavity 211, the first exhaust hole 212 and the second exhaust hole 213 are arranged on the cover body 210 to exhaust the water storage cavity 110, thereby balancing the air pressure of the water storage cavity 110. The sealing ball 220 is arranged in the exhaust cavity 211. The diameter of the first exhaust hole 212 and the diameter of the second exhaust hole 213 are both smaller than the diameter of the sealing ball 220, thereby limiting the movement range of the sealing ball 220 in the exhaust cavity 211. In this way, the sealing ball 220 can block the first exhaust hole 212 when the water heating blanket host is in an upright state. In addition, the sealing ball 220 can block the second exhaust hole 213 when the water heating blanket host is in an inclined or inverted state. Therefore, the liquid can be effectively prevented from flowing out of the first exhaust hole 212 or the second exhaust hole 213, thereby improving the use convenience of the water heating blanket host.

[0062] In a possible implementation, the diameter of the exhaust cavity 211 is greater than the diameter of the sealing ball 220. In this way, a gap is formed between the sealing ball 220 and the exhaust cavity 211. When the placement state of the water heating blanket host changes, the sealing ball 220 can move in the exhaust cavity 211. When the air pressure of the water storage cavity 110 increases, the air pressure can overcome the gravity of the sealing ball 220, thereby lifting the sealing ball 220 to open the first exhaust hole 212, and allowing the steam to flow out of the first exhaust hole 212, the gap between the sealing ball 220 and the exhaust cavity 211 and the second exhaust hole 213.

[0063] Referring to Figure 8 In some embodiments, the cover body 210 comprises a first cover body 210a and a second cover body 210b connected to each other. The first cover body 210a is detachably connected to the water tank 100.

[0064] It can be understood that, since the diameter of the first exhaust hole 212 and the diameter of the second exhaust hole 213 are both smaller than the diameter of the sealing ball 220, in order to facilitate the placement of the sealing ball 220 in the exhaust cavity 211, the cover body 210 can be divided into the first cover body 210a and the second cover body 210b. The first cover body 210a and the second cover body 210b are respectively machined, and then the sealing ball 220 is placed in the exhaust cavity 211. Finally, the first cover body 210a and the second cover body 210b are connected, thereby forming the cover body 210. In this way, the machining and assembly of the tank cover assembly 200 are facilitated.

[0065] Referring to Figure 5 With Figure 7 As shown in the figure, in a specific implementation, the first cover 210a has a first exhaust cavity 211a, and the second cover 210b has a second exhaust cavity 211b. The first exhaust cavity 211a and the second exhaust cavity 211b jointly constitute an exhaust cavity 211. The first exhaust hole 212 is located at one end of the first exhaust cavity 211a away from the second exhaust cavity 211b, and the second exhaust hole 213 is located at one end of the second exhaust cavity 211b away from the first exhaust cavity 211a.

[0066] In this way, after the first cover 210a and the second cover 210b are connected, the first exhaust cavity 211a and the second exhaust cavity 211b can be jointly spliced into the exhaust cavity 211, and then the sealing ball 220 can be placed in the exhaust cavity 211, and the first exhaust hole 212 and the second exhaust hole 213 can be arranged at both ends of the exhaust cavity 211.

[0067] Referring to Figure 5 With Figure 7 As shown in the figure, in a possible implementation, the end of the first exhaust hole 212 away from the water-containing cavity 110 has a first sealing surface 2121. And / or, the end of the second exhaust hole 213 toward the water-containing cavity 110 has a second sealing surface 2131.

[0068] That is, the end of the first exhaust hole 212 away from the water-containing cavity 110 can have the first sealing surface 2121, the end of the second exhaust hole 213 toward the water-containing cavity 110 can have the second sealing surface 2131, or the end of the first exhaust hole 212 away from the water-containing cavity 110 has the first sealing surface 2121, and the end of the second exhaust hole 213 toward the water-containing cavity 110 has the second sealing surface 2131.

[0069] When the sealing ball 220 moves toward the first exhaust hole 212, the sealing ball 220 can abut against the first sealing surface 2121, and then the sealing ball 220 blocks the first exhaust hole 212, thereby preventing liquid from leaking from the first exhaust hole 212. When the sealing ball 220 moves toward the second exhaust hole 213, the sealing ball 220 can abut against the second sealing surface 2131, and then the sealing ball 220 blocks the second exhaust hole 213, thereby preventing liquid from leaking from the second exhaust hole 213.

[0070] In a possible implementation, the first sealing surface 2121 and the second sealing surface 2131 are both concave curved surfaces that are fitted with the spherical surface of the sealing ball 220.

[0071] In this way, the first sealing surface 2121 and the second sealing surface 2131 can be in close contact with the spherical surface of the sealing ball 220, thereby improving the sealing between the sealing ball 220 and the first sealing surface 2121 and the sealing between the sealing ball 220 and the second sealing surface 2131.

[0072] Referring to Figure 8 In some embodiments, the first cover 210a has a mounting groove 212a, the second cover 210b is arranged in the mounting groove 212a, and the side of the second cover 210b away from the water storage cavity 110 is flush with the groove mouth of the mounting groove 212a.

[0073] In this way, the second cover 210b can be connected with the first cover 210a through the mounting groove 212a, and the side of the second cover 210b away from the water storage cavity 110 is flush with the groove mouth of the mounting groove 212a, so that the second cover 210b does not protrude from the surface of the first cover 210a, thereby improving the aesthetics of the cover 210.

[0074] Referring to Figure 8 In one possible implementation, the first cover 210a includes a first connecting portion 213a and a knob portion 214a connected with each other, the first connecting portion 213a is connected with the water tank 100, and the first exhaust cavity 211a is located in the knob portion 214a.

[0075] In this way, the knob portion can be used for hand operation, and the first connecting portion 213a is connected with the water tank 100 to block the water inlet 120 or is disconnected from the water tank 100 to open the water inlet 120 by rotating the first connecting portion 213a.

[0076] In some embodiments, the second cover 210b includes a second connecting portion and a flexible exhaust portion connected with each other, the second connecting portion is connected with the first cover 210a, and the second exhaust hole 213 is located in the flexible exhaust portion.

[0077] It can be understood that when the host of the water heating blanket is inverted, liquid is prone to flow out of the second exhaust hole 213. In order to improve the sealing between the sealing ball 220 and the second exhaust hole 213, the second cover 210b can be provided as a second connecting portion and a flexible exhaust portion. The second connecting portion can be of a rigid structure and is used for connecting the first cover 210a, for example, ultrasonic welding between the second connecting portion and the first cover 210a. The flexible exhaust portion can be of a flexible structure, and the inner wall of the flexible exhaust portion, i.e., the second exhaust hole 213, can be elastically deformed. In this way, when the sealing ball 220 abuts against one end of the second exhaust hole 213 towards the second exhaust cavity 211b under the action of its own gravity, the fitting degree between the sealing ball 220 and the second exhaust hole 213 can be improved, and in turn the sealing between the sealing ball 220 and the second exhaust hole 213 can be improved.

[0078] Referring to Figure 2 In a possible implementation, the host of the water heating blanket further includes a housing 300 and a heating element 400. The water tank 100 is arranged in the housing 300, and at least part of the cover 210 protrudes from the housing 300. The heating element 400 is arranged in the water containing cavity 110 and is configured to heat the liquid in the water containing cavity 110.

[0079] In this way, the heating element 400 can be used to heat the liquid in the water containing cavity 110, so that the host of the water heating blanket realizes the function of heating the liquid. The water tank 100 can be arranged in the housing 300 to improve the appearance of the host of the water heating blanket. The cover 210 can protrude from the housing 300 to facilitate the operation of the cover 210, and in turn open or close the water inlet 120.

[0080] Specifically, referring to Figure 2 The housing 300 can include a first housing 310 and a second housing 320 connected to each other. The water tank 100 can be mounted in the second housing 320, and then the first housing 310 and the second housing 320 are connected, so that the water tank 100 and the housing 300 are assembled conveniently.

[0081] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A main unit of a water heating blanket, characterized in that: It comprises a water tank (100) and a tank cover assembly (200), wherein the water tank (100) has a water holding cavity (110), and a water inlet (120) is provided on the side of the water holding cavity (110); The box cover assembly (200) comprises a cover body (210) and a sealing ball (220), and the cover body (210) is detachably connected to the water inlet (120); The cover body (210) has an exhaust cavity (211), and the exhaust cavity (211) has a first exhaust hole (212) and a second exhaust hole (213) at both ends. The first exhaust hole (212) is located at one end of the exhaust cavity (211) close to the water containing cavity (110), and the second exhaust hole (213) is located at one end of the exhaust cavity (211) away from the water containing cavity (110). The sealing ball (220) is movably arranged in the exhaust cavity (211), and the diameters of the first exhaust hole (212) and the second exhaust hole (213) are both smaller than the ball diameter of the sealing ball (220).

2. The main unit of the water heating blanket according to claim 1, characterized in that: The diameter of the exhaust cavity (211) is larger than the diameter of the sealing ball (220).

3. The main unit of the water heating blanket according to claim 1 or 2, characterized in that: The cover body (210) comprises a first cover body (210a) and a second cover body (210b) connected to each other, and the first cover body (210a) is detachably connected to the water tank (100).

4. The main unit of the water heating blanket according to claim 3, characterized in that: The first cover body (210a) has a first exhaust cavity (211a), the second cover body (210b) has a second exhaust cavity (211b), and the first exhaust cavity (211a) and the second exhaust cavity (211b) together constitute the exhaust cavity (211); The first exhaust hole (212) is located at one end of the first exhaust cavity (211a) away from the second exhaust cavity (211b), and the second exhaust hole (213) is located at one end of the second exhaust cavity (211b) away from the first exhaust cavity (211a).

5. The main unit of the water heating blanket according to claim 1 or 2, characterized in that: An end of the first exhaust hole (212) facing away from the water containing cavity (110) has a first sealing surface (2121); And / or, one end of the second exhaust hole (213) facing the water containing cavity (110) has a second sealing surface (2131).

6. The main unit of the water heating blanket according to claim 5, characterized in that: The first sealing surface (2121) and the second sealing surface (2131) are both concave curved surfaces that are arranged to fit the spherical surface of the sealing ball (220).

7. The main unit of the water heating blanket according to claim 3, characterized in that: The first cover body (210a) has a mounting groove (212a), the second cover body (210b) is arranged in the mounting groove (212a), and a side of the second cover body (210b) facing away from the water containing cavity (110) is flush with a notch of the mounting groove (212a).

8. The main unit of the water heating blanket according to claim 4, characterized in that: The first cover body (210a) comprises a first connecting portion (213a) and a knob portion (214a) connected to each other, the first connecting portion (213a) is connected to the water tank (100), and the first exhaust cavity (211a) is located on the knob portion (214a).

9. The main unit of the water heating blanket according to claim 4, characterized in that: The second cover body (210b) comprises a second connecting portion and a flexible exhaust portion which are connected to each other, the second connecting portion is connected to the first cover body (210a), and the second exhaust hole (213) is located in the flexible exhaust portion.

10. The main unit of the water heating blanket according to claim 1 or 2, characterized in that: It also includes a shell (300) and a heating element (400), wherein the water tank (100) is disposed in the shell (300), and at least a portion of the cover (210) protrudes from the shell (300), and the heating element (400) is disposed in the water containing chamber (110) and is configured to heat the liquid in the water containing chamber (110).

11. A water heating blanket, characterized in that: The utility model comprises a blanket and a host of the water-heating blanket according to any one of claims 1 to 10, wherein the host of the water-heating blanket is connected to the blanket.

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