Liquid heater with good protection performance

Abstract

The utility model discloses a liquid heater with good protection performance, which relates to the technical field of electrical equipment protection, and comprises a shell, a PCB (printed circuit board) and a protection shell acting on the PCB are arranged in the shell, the protection shell is provided with an assembly cavity formed in a surrounding manner, the PCB is arranged in the assembly cavity, the protection shell is arranged in an inverted manner, and the PCB is arranged in the assembly cavity. The opening, corresponding to the assembly cavity, of the protective shell faces the bottom of the shell; through the arrangement of the protective shell, particularly the protective shell is provided with the assembly cavity formed in a surrounding mode, the protective shell can be used for installing the PCB through the assembly cavity, and through the arrangement of the protective shell in an inverted mode, the protective shell can be arranged on the PCB in a covering mode and provide protection for the PCB; therefore, water vapor generated in the liquid heating process can be effectively prevented from entering the liquid heater through gaps such as the overflow hole, the PCB is prevented from being affected with damp and being out of order, the protective shell can prevent permeated water drops from dropping on the PCB, and short circuit of a circuit of the PCB is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment protection, in particular to a liquid heater with good protection performance. Background Art

[0002] As people's living standards improve, they pay more attention to hygiene in their lives, especially infants and young children, who have poor resistance and pay more attention to hygiene when feeding with bottles. Therefore, generally, bottles are sterilized and disinfected by disinfection devices. Existing bottles are generally sterilized by liquid heaters at high temperatures. By boiling the water in the liquid heater, the water is sterilized and disinfected by steam. At the same time, it can also have a steamer function. For example, the Chinese authorized patent "A New Liquid Heater" with announcement number CN214631597U previously proposed by the applicant can place the stewing facility in the first heating chamber, and then heat the liquid in the first heating chamber through the first heating component, and stew and heat the ingredients in the stewing facility through the heated liquid.

[0003] Liquid heaters, as the name implies, are electrical devices used to heat liquids. Existing liquid heaters are equipped with some overflow holes due to safety regulations, and the water vapor generated during the liquid heating process will also enter the interior of the machine through the overflow holes and other gaps, causing a certain impact on the PCB board; and after long-term use, the sealing ring of the liquid heater will inevitably age, break or deform, so that the sealing ring cannot fit tightly to the corresponding area, resulting in water seepage into the interior of the machine. If the area happens to be located above the PCB board, the seeped water will drip on the surface of the PCB board, causing a short circuit in the PCB board.

[0004] Therefore, it is necessary to propose an improved technical solution to solve the above problems. Utility Model Content

[0005] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0006] A liquid heater with good protective performance comprises a shell, a PCB board and a protective shell acting on the PCB board are arranged in the shell, the protective shell has an assembly cavity formed by an enclosure, the PCB board is placed in the assembly cavity, wherein the protective shell is inverted so that the opening of the protective shell corresponding to the assembly cavity is toward the bottom of the shell.

[0007] As a further solution of the utility model: the protective shell includes a top plate and side plates connected to the periphery of the top plate, and the top plate and the side plates are arranged to form the assembly cavity.

[0008] As a further solution of the utility model: a connection structure acting on the protective shell is arranged in the shell to space the protective shell from the bottom of the shell, wherein a drainage hole is arranged at the bottom of the shell.

[0009] As a further solution of the utility model: the shell includes a base plate and an upper shell connected thereto, the connecting structure is a first threaded column extending on the inner bottom surface of the upper shell, a connecting column corresponding to the first threaded column is extended on the circumferential side of the protective shell, and the connecting column is provided with a first mounting hole corresponding to the threaded hole of the first threaded column.

[0010] As a further solution of the utility model: a second threaded column is extendedly provided on the inner bottom surface of the protective shell, and a second mounting hole corresponding to the threaded hole of the second threaded column is opened on the PCB board.

[0011] As a further solution of the utility model: the outer surface of the protective shell is coated with a hydrophobic material.

[0012] As a further solution of the utility model: a cable buckle is also extended to the peripheral side of the protective shell, and the cable buckle is staggered with the connecting column.

[0013] As a further solution of the utility model: a first heating station and a second heating station are provided on the surface of the upper shell.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1) By setting the protective shell, especially the protective shell having an assembly cavity formed by an enclosure, the protective shell can be used to install the PCB board through the assembly cavity, and by setting the protective shell upside down, that is, the opening of the protective shell corresponding to the assembly cavity is facing the bottom of the shell, so that the protective shell can be covered on the PCB board to provide protection for the PCB board, thereby effectively reducing the impact of water vapor generated during the liquid heating process entering the interior of the liquid heater through gaps such as overflow holes on the PCB board, that is, effectively preventing the PCB board from malfunctioning due to moisture, and when water accidentally seeps into the interior of the liquid heater, the protective shell can block the infiltrated water from dripping onto the PCB board, that is, effectively preventing the PCB board from short-circuiting, thereby effectively improving the service life of the liquid heater.

[0016] 2) A connection structure corresponding to the protective shell is provided in the shell, so that the protective shell can be suspended in the shell. Therefore, when water accidentally seeps into the liquid heater, the water dripping onto the protective shell can flow along the outer surface of the protective shell to the bottom of the shell. The protective shell and the bottom of the shell are spaced apart at a distance so that the PCB board can have a safe distance from the bottom of the shell to prevent immersion in accumulated water, thereby further improving the protection effect of the PCB board through the protective shell; and combined with the setting of the drainage hole at the bottom of the shell, the infiltrated water can be discharged in time along the drainage hole. At the same time, the drainage hole can also serve as a heat dissipation hole, so that the interior of the liquid heater remains dry and is conducive to the heat dissipation of the PCB board.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the upper shell, PCB board and protective shell in the utility model;

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0022] Figure 4 This is a schematic structural diagram of the protective shell of the utility model from one perspective;

[0023] Figure 5 It is a structural schematic diagram of the protective shell in the utility model from another perspective.

[0024] The reference numerals and names in the figures are as follows:

[0025] 1. Shell; 2. PCB board; 3. Protective shell; 4. Assembly cavity; 5. Top plate; 6. Side plate; 7. Bottom plate; 8. Upper shell; 9. First threaded column; 10. Connecting column; 11. First mounting hole; 12. Second threaded column; 13. Second mounting hole; 14. Cable buckle; 15. First heating station; 16. Second heating station. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-5 In an embodiment of the utility model, a liquid heater with good protective performance includes a shell 1, in which a PCB board 2 and a protective shell 3 acting on the PCB board 2 are arranged, the protective shell 3 has an assembly cavity 4 formed by an enclosure, and the PCB board 2 is placed in the assembly cavity 4, wherein the protective shell 3 is inverted so that the opening of the protective shell 3 corresponding to the assembly cavity 4 is facing the bottom of the shell 1.

[0028] In the technical solution of the utility model, by setting the protective shell 3, especially the protective shell 3 having an enclosed assembly cavity 4, the protective shell 3 can install the PCB board 2 through the assembly cavity 4, and by setting the protective shell 3 upside down, that is, the opening of the protective shell 3 corresponding to the assembly cavity 4 is facing the bottom of the shell 1, so that the protective shell 3 can be covered on the PCB board 2 to provide protection for the PCB board 2, thereby effectively reducing the water vapor generated during the liquid heating process from entering the interior of the liquid heater through gaps such as overflow holes and causing the impact on the PCB board 2, that is, effectively preventing the PCB board 2 from malfunctioning due to moisture, and when water accidentally seeps into the interior of the liquid heater, the protective shell 3 can block the infiltrated water from dripping onto the PCB board 2, that is, effectively preventing the circuit of the PCB board 2 from short-circuiting, thereby effectively improving the service life of the liquid heater.

[0029] More specifically, in the embodiment of the present invention, the protective shell 3 includes a top plate 5 and side plates 6 connected to the periphery of the top plate 5 , and the top plate 5 and the side plates 6 surround and form the assembly cavity 4 .

[0030] The side panels 6 and the top panel 5 can be perpendicular to each other, wherein the assembly cavity 4 formed by the top panel 5 and the side panels 6 can match the shape of the PCB board 2, thereby achieving effective protection for the PCB board 2 while ensuring the compactness of the structure.

[0031] More specifically, in the embodiment of the utility model, a connection structure acting on the protective shell 3 is provided in the shell 1 to space the protective shell 3 from the bottom of the shell 1, wherein a drainage hole is provided at the bottom of the shell 1.

[0032] By providing a connection structure corresponding to the protective shell 3 in the shell 1, the protective shell 3 can be suspended in the shell 1, so that when water accidentally seeps into the liquid heater, the water dripping onto the protective shell 3 can flow along the outer surface of the protective shell 3 to the bottom of the shell 1, and the protective shell 3 and the bottom of the shell 1 are spaced apart at a distance so that the PCB board 2 can have a safe distance from the bottom of the shell 1 to prevent immersion in accumulated water, thereby further improving the protection effect of the PCB board 2 through the protective shell 3; and combined with the setting of the drainage hole at the bottom of the shell 1, the infiltrated water can be discharged in time along the drainage hole, and the drainage hole can also serve as a heat dissipation hole, so that the interior of the liquid heater remains dry and is conducive to the heat dissipation of the PCB board 2.

[0033] More specifically, in the embodiment of the utility model, the shell 1 includes a base plate 7 and an upper shell 8 connected thereto, the connecting structure is a first threaded column 9 extending on the inner bottom surface of the upper shell 8, a connecting column 10 corresponding to the first threaded column 9 is extended on the circumferential side of the protective shell 3, and the connecting column 10 is provided with a first mounting hole 11 corresponding to the threaded hole of the first threaded column 9.

[0034] By setting the first threaded column 9 of the upper shell 8, that is, the screw cooperation between the first threaded column 9 and the connecting column 10, the fixed connection between the protective shell 3 and the upper shell 8 is achieved. The installation method of the protective shell 3 is convenient and firm, and at the same time, it can meet the requirement of having a spacing distance between the protective shell 3 and the bottom plate 7, which is beneficial to the heat dissipation of the PCB board 2 and prevents the immersion of water.

[0035] More specifically, in the embodiment of the present invention, a second threaded column 12 is extended from the inner bottom surface of the protective shell 3 , and a second mounting hole 13 corresponding to the threaded hole of the second threaded column 12 is opened on the PCB board 2 .

[0036] By disposing the second threaded column 12 of the protective shell 3 in the assembly cavity 4, the protective shell 3 and the PCB board 2 are fixedly connected through the second threaded column 12, which is convenient and firm.

[0037] More specifically, in the embodiment of the present invention, the outer surface of the protective shell 3 is coated with a hydrophobic material.

[0038] The hydrophobic material can be polyolefin, polycarbonate, polyamide, polyacrylonitrile, polyester, fluorine-free acrylate, molten paraffin, PTFE, FEP, ECTE, ETFE or PFA, so that water dripping onto the top plate 5 can quickly flow down along the side plate 6, thereby effectively avoiding water accumulation.

[0039] More specifically, in the embodiment of the utility model, a cable buckle 14 is further extended from the peripheral side of the protective shell 3 , and the cable buckle 14 is staggered with the connecting column 10 .

[0040] The cable buckle 14 is used to plan and organize the lines connected to the PCB board 2, thereby facilitating cable arrangement and line management.

[0041] More specifically, in the embodiment of the present invention, a first heating station 15 and a second heating station 16 are disposed on the surface of the upper shell 8 .

[0042] One of the heating stations can be used to sterilize items by steam, and the other heating station can be used to heat or keep liquids warm, etc.

[0043] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A liquid heater with good protection performance, characterized in that: The invention comprises a shell, in which a PCB board and a protective shell acting on the PCB board are arranged, the protective shell has an assembly cavity formed by an enclosure, and the PCB board is placed in the assembly cavity, wherein the protective shell is arranged inverted so that the opening of the protective shell corresponding to the assembly cavity is toward the bottom of the shell.

2. A liquid heater with good protection performance according to claim 1, characterized in that: The protective shell includes a top plate and side plates connected to the periphery of the top plate, and the top plate and the side plates are arranged to form the assembly cavity.

3. A liquid heater with good protection performance according to claim 1 or 2, characterized in that: A connection structure acting on the protective shell is arranged in the shell to space the protective shell from the bottom of the shell, wherein a drainage hole is arranged at the bottom of the shell.

4. A liquid heater with good protection performance according to claim 3, characterized in that: The shell includes a bottom plate and an upper shell connected thereto, the connecting structure is a first threaded column extending on the inner bottom surface of the upper shell, a connecting column corresponding to the first threaded column is extended on the circumferential side of the protective shell, and the connecting column is provided with a first mounting hole corresponding to the threaded hole of the first threaded column.

5. A liquid heater with good protection performance according to claim 1 or 2, characterized in that: A second threaded column is extended from the inner bottom surface of the protective shell, and a second mounting hole corresponding to the threaded hole of the second threaded column is opened on the PCB board.

6. A liquid heater with good protection performance according to claim 1, characterized in that: The outer surface of the protective shell is coated with a hydrophobic material.

7. A liquid heater with good protection performance according to claim 4, characterized in that: A cable buckle is also extended from the peripheral side of the protective shell, and the cable buckle is staggered with the connecting column.

8. A liquid heater with good protection performance according to claim 4, characterized in that: The surface of the upper shell is provided with a first heating station and a second heating station.

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