CN210185282U - Temperature controller and electric heating appliance using same - Google Patents

Abstract

The utility model relates to a temperature controller and use its electric heating appliance. The temperature controller in the embodiment of the utility model comprises a temperature sensing probe, an insert and a thermistor; the temperature sensing probe and the insert are fixed to form an installation cavity, and the thermistor is directly positioned in the installation cavity; the temperature sensing probe and the insert are made of insulating materials. Because the temperature sensing probe is made of insulating materials, the thermistor can be directly arranged in the installation cavity without installing a sleeve, and the problem of electric leakage caused by direct contact between the thermistor and the temperature sensing probe is avoided, so that an earthing device is not required to be additionally arranged on the temperature controller. Compared with the temperature controller of the metal temperature sensing probe in the prior art, the temperature controller has simpler structure, simplified processing technology and reduced cost.

Description

Temperature controller and electric heating appliance using same

Technical Field

The utility model relates to an electrical apparatus field, concretely relates to temperature controller.

Background

The temperature controller on the cooking utensil in the present market comprises a metal temperature sensing probe, a spring, a fixed support, a fuse, a thermistor, a sleeve and a grounding device; when the temperature controller is in contact with an external heat source in the using process, heat is transferred to the thermistor and the fuse through the temperature sensing probe, and the function of temperature control is realized; in the process of realizing temperature control, because the temperature sensing probe adopts a metal electric conductor as a temperature sensing material, a sleeve is required to be arranged on a thermistor and a fuse which are arranged in the temperature controller, so that the direct contact and electric leakage of the thermistor, the fuse and the temperature sensing probe are avoided, and meanwhile, because the temperature sensing probe is made of a conductive material, a grounding device is required to be arranged on the temperature controller; this type of temperature controller structure is complicated, and the process is complicated, and the processing cost is higher.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one of the above technical problems, the present invention provides a temperature controller and an electric heating device using the same.

An embodiment of one aspect of the present invention provides a temperature controller, which includes a temperature sensing probe, an insert and a thermistor; the temperature sensing probe and the insert are fixed to form an installation cavity, and the thermistor is directly positioned in the installation cavity; the temperature sensing probe and the insert are made of insulating materials.

In some embodiments of the present invention, the insulating material used for the temperature sensing probe and the insert is at least one of an inorganic insulating material or a polymer insulating material.

In some embodiments of the present invention, the material of the temperature sensing probe is an inorganic insulating material, and the material of the insert is a polymer insulating material.

In some embodiments of the present invention, the inorganic insulating material is at least one of a ceramic material, a glass material, or a quartz material; the polymer insulating material is at least one of PET, PPS, PEEK, PI or PAR.

In some embodiments of the present invention, the thickness of the temperature sensing probe is 1mm to 3 mm.

In some embodiments of the present invention, the temperature sensing probe is a cap-like structure.

In some embodiments of the present invention, the temperature controller further comprises a fuse, and the fuse is directly located in the mounting cavity; and the fuse is arranged at a distance from the thermistor.

In some embodiments of the invention, the insert is provided with a middle rib separating the thermistor and the fuse.

In some embodiments of the present invention, the width of the middle rib is 0.5-1 mm.

In some embodiments of the present invention, the insert is provided with a first edge rib, forming a limit structure for the thermistor with the middle rib, and/or the insert is provided with a second edge rib, forming a limit structure for the fuse with the middle rib.

In some embodiments of the present invention, the first edge bead and/or the second edge bead has a width of 0.5-1 mm.

In some embodiments of the present invention, the thermistor and/or the fuse is disposed in close contact with the inner surface of the temperature sensing probe.

In some embodiments of the present invention, the insert is further provided with a mounting passage for a wire connected to the thermistor and/or the fuse; and/or the insert is also provided with a plurality of hollow structures.

In some embodiments of the present invention, the temperature controller further comprises a fixing bracket and/or a spring; the insert is fixedly connected with the fixed support, and/or the spring is respectively abutted against the insert and the fixed support.

The utility model discloses an in some embodiments, the mold insert has two at least elasticity and detains the position, and the fixed bolster is provided with detains the position complex mounting hole with elasticity, detains the position with elasticity and inserts the mounting hole and realize the fixed connection of mold insert and fixed bolster.

In some embodiments of the present invention, the insert has two elastic buckling positions.

In some embodiments of the present invention, two elastic buckles of the insert are disposed in a non-parallel manner.

In some embodiments of the present invention, the two resilient snap-fit locations have an included angle of 1-5 °.

In some embodiments of the present invention, the insert is provided with a guiding post on each of two sides of the elastic buckle.

In some embodiments of the present invention, the width of the guide post is 3mm to 5 mm; and/or the guide post is in a rectangular structure or a cylindrical structure; and/or the clearance between the guide post and the elastic buckling position is more than 0.5mm and not more than 3 mm; and/or after the elastic buckling position is fixedly connected with the fixed support, the gap between the guide column and the fixed support is larger than 0.5mm and not larger than 3 mm; and/or the bottom of the guide post is provided with a guide angle structure, and the guide angle structure is not less than 2 mm; and/or the bottom of the guide post is 1-3mm lower than the bottom of the elastic buckling position.

An embodiment of another aspect of the present invention provides an electric heating device, comprising the above-mentioned temperature controller.

In some embodiments of the present invention, the electric heating appliance is an electric cooker, an electric pressure cooker, an induction cooker, an electric stewpot, a bread maker, a multifunctional pot, a water kettle, a soybean milk maker or a coffee maker.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a front view of a temperature controller according to an embodiment of the present invention;

FIG. 2 is a top view of the thermostat shown in FIG. 1;

FIG. 3 is a sectional view taken along the A-A direction of the thermostat shown in FIG. 2 according to the present invention;

FIG. 4 is a sectional view taken along the direction B-B of the thermostat shown in FIG. 2 according to the present invention;

FIG. 5 is a cross-sectional view taken along the C-C direction of the thermostat shown in FIG. 2 according to the present invention;

FIG. 6 is a left side view of the temperature controller shown in FIG. 1 according to the present invention;

fig. 7 is a bottom view of the temperature controller shown in fig. 1.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The temperature controller and the electric heating appliance using the same according to the embodiment of the present invention will be described with reference to fig. 1 to 7.

The temperature controller of an embodiment of the present invention is shown in fig. 1-7, and includes: the temperature sensing probe 1, the insert 7 and the thermistor 2; the temperature sensing probe 1 and the insert 7 are fixed to form an installation cavity 10, and the thermistor 2 is directly positioned in the installation cavity 10; the temperature sensing probe 1 and the insert 7 are made of insulating materials.

It should be noted that the position relationship between the insert and the temperature sensing probe may be arbitrary, and for convenience of description, the temperature sensing probe and the insert are described as an example of the vertical positioning, and it should be understood that the indication of the direction is only for the purpose of example, and not for limiting the protection scope of the present invention.

In this embodiment, the thermistor is directly located in the mounting cavity, which means that the thermistor is exposed in the mounting cavity without an additional structure. Because the temperature sensing probe is made of insulating materials, the thermistor can be directly arranged in the installation cavity without installing a sleeve, and the problem of electric leakage caused by direct contact between the thermistor and the temperature sensing probe is avoided, so that an earthing device is not required to be additionally arranged on the temperature controller. Compared with the temperature controller of the metal temperature sensing probe in the prior art, the temperature controller has simpler structure, simplified processing technology and reduced cost. The thermistor can sense the heat transmitted by the temperature sensing probe, and the temperature measurement function is realized.

In another embodiment of the present invention, the insulation material used for the temperature sensing probe 1 and the insert 7 is at least one of an inorganic insulation material or a polymer insulation material. Further, the inorganic insulating material is at least one of insulating materials such as a ceramic material, a glass material, and a quartz material. Ceramic materials include, but are not limited to, oxides, nitrides, carbides, and the like, of metals or non-metals. By using an inorganic insulating material such as a ceramic insulating material, the temperature sensing probe has good insulating property, does not have the problem of poor withstand voltage, has higher hardness, is not easy to scratch, has low appearance roughness, and is easy to clean. Further, the polymer insulating material is a high temperature resistant insulating polymer material, such as at least one of PET, PPS, PEEK, PI, PAR, etc., or other high temperature resistant plastic or rubber material. The high polymer insulating material has low cost, easy manufacture, good insulating property and no poor voltage resistance. In a preferred embodiment, the temperature sensing probe is made of a ceramic insulating material, and the insert is made of a polymer insulating material.

In another embodiment of the present invention, the thickness of the temperature sensing probe is 1mm to 3mm, which is the average thickness of the temperature sensing probe. The thickness of the temperature sensing probe cannot be too low, and the temperature sensing probe may have too low strength and impact resistance and cannot effectively protect the structure in the mounting cavity; however, the thickness is too thick, which causes the heat conductivity to be reduced, and the heat conductivity cannot be effectively conducted.

In another embodiment of the present invention, the fixing of the temperature sensing probe 1 and the insert 7 can be achieved by gluing, interference fit, screwing or other existing fixing forms, as long as the temperature sensing probe and the insert are fixed to each other.

The utility model discloses in, the temperature sensing probe can be for the arbitrary shape according to actual production needs design, as long as can be fixed with the mold insert and form the installation cavity can. In one preferred embodiment of the present invention, the temperature sensing probe 1 has a cap-like structure. In one embodiment, as shown in fig. 5, the upper portion of the insert 7 has a groove, and the shape of the groove may be various, for example, the projection of the groove in the up-down direction may be rectangular, circular or triangular, so that the groove can be adapted to temperature sensing elements with various shapes. In this embodiment, the temperature sensing probe 1 of a cap-like structure and the recess of the insert 7 form a mounting cavity 10.

In another embodiment of the present invention, the temperature controller further includes a fuse 3, and the fuse 3 is directly located in the installation cavity 10; and the fuse 3 is spaced apart from the thermistor 2. The fuse is directly located in the mounting cavity, which means that the fuse is exposed in the mounting cavity without additional structure outside. By arranging the fuse, when the temperature exceeds the upper temperature limit of the fuse, the fuse is disconnected, and the protection effect is achieved. The utility model discloses in, the fuse sets up with the thermistor interval and indicates that fuse and thermistor separate one section distance in the space, not contact each other. Therefore, the fuse and the thermistor do not need to be additionally provided with insulating protection mechanisms such as a sleeve and the like respectively.

Further, in another embodiment of the present invention, the insert 7 is provided with a middle rib 11 separating the thermistor 2 and the fuse 3. Through the middle rib arranged on the insert, the thermistor and the fuse are further guaranteed not to be contacted with each other, and the thermistor and the fuse are guaranteed to be insulated from each other. The width of the middle rib can be reasonably set according to needs, and preferably, the width of the middle rib is 0.5-1 mm.

Further, in another embodiment of the present invention, the insert is provided with a first edge rib 12 to form a limit structure for the thermistor with the middle rib, and/or the insert is provided with a second edge rib 13 to form a limit structure for the fuse with the middle rib. The position of the thermistor and/or the fuse can be fixed by forming a limit structure for the thermistor and/or the fuse. The widths of the first side rib 12 and the second side rib 13 can be reasonably set according to needs, and preferably, the width of the first side rib 12 and/or the second side rib 13 is 0.5-1 mm.

In the installation cavity, the thermistor 2 and/or the fuse 3 and the inner surface of the temperature sensing probe 1 can be arranged in a close contact manner or at intervals. The inner surface of the temperature sensing probe refers to the surface of one side of the temperature sensing probe for forming the mounting cavity, the close arrangement refers to the close arrangement of the thermistor and/or the fuse to the inner surface of the temperature sensing probe, at least part of the thermistor and/or the fuse is directly contacted with the inner surface of the temperature sensing probe, or the close arrangement is realized through the heat conduction materials such as heat conduction silicone grease and the like arranged between the thermistor and/or the fuse and the inner surface of the temperature sensing probe. The thermistors and/or fuses arranged at intervals are spaced apart from the inner surface of the temperature sensing probe. Preferably, the thermistor and/or the fuse are/is arranged in close contact with the inner surface of the temperature sensing probe. The temperature sensing probe is used as a main temperature sensing part, and the thermistor and/or the fuse are/is closely attached to the inner surface of the temperature sensing probe, so that heat can be more efficiently transferred to the thermistor and/or the fuse, and the temperature sensing speed and the temperature measuring precision are improved.

In another embodiment of the present invention, the thermistor 2 and/or the fuse 3 are fixedly connected with a lead respectively. The fixed connection is, for example, welding, riveting, or the like. The wire can be various common high-temperature-resistant wire types, such as a teflon wire, a high-temperature braided wire and the like. In one embodiment, as shown in fig. 3-4, the thermistor 2 is connected with a teflon wire 5 by means of copper tape riveting 4, and the fuse 3 is connected with a high temperature braided wire 6 by means of copper tape riveting 4. In addition, in an embodiment, the insert 7 is further provided with a mounting passage of a lead of the thermistor and/or the fuse, and the lead is led into the insert and connected with the thermistor and/or the fuse. In one embodiment, as shown in fig. 7, the insert 7 has two symmetrical thermistor wire mounting passages 14 and also has two symmetrical fuse wire mounting passages 15. In addition, as shown in fig. 7, the insert is further provided with a plurality of hollowed-out structures 16, and the plurality of hollowed-out structures 16 may be defined by a plurality of connecting ribs 19 that interconnect the lead wire installation path 14 of the thermistor and the lead wire installation path 15 of the fuse. In one embodiment, 3-6 hollow but disconnected structures can be arranged in the middle of the insert, so that the forming and assembling are convenient.

In another embodiment of the present invention, the temperature controller further includes a fixing bracket 9, and the insert 7 is fixedly connected to the fixing bracket 9. The insert is fixedly arranged with the fixed support, so that the installation or assembly is convenient. The fastening can be performed by means of, for example, glue, snap-fit, screw-connection, etc.

In another embodiment of the present invention, the temperature controller further comprises a spring 8, wherein the spring 8 abuts against the insert 7 and the fixing bracket 9 respectively. The spring 8 can show different compression states according to different working states of the temperature controller.

Further, in another embodiment of the present invention, the insert 7 is clamped to the fixing bracket 9. In an embodiment, the insert has at least two elastic buckling positions 17, the fixing bracket 9 is provided with a mounting hole matched with the elastic buckling positions, and the elastic buckling positions are inserted into the mounting hole to realize the fixed connection of the insert 7 and the fixing bracket 9. When the elastic buckle position is inserted into the mounting hole, the elastic buckle position can be clamped with the mounting bracket. The resilient catch 17 is preferably provided integrally with the insert 7. Preferably, the insert 7 has two resilient snap-fits 17.

Further, the two elastic buckling positions 17 on the insert 7 are arranged in a non-parallel manner. Preferably the two resilient snap-fits have an included angle of 1-5 deg.. Through the non-parallel arrangement, the fixing bracket can be ensured to be arranged on one side of the buckling position all the time under the action of the component force of the included angle without sliding, and the connection reliability is ensured. The too small angle of the included angle cannot produce the effective sliding-preventing included angle component force, and the too large angle of the included angle can cause the too large included angle component force, possibly causing the instability of the connection of the elastic buckle position and the fixed support.

Furthermore, the insert 7 is provided with a guide column 18 on each side of the elastic buckling position 17. The guide post 18 is used for guiding during installation and limiting during use, and preferably, the guide post 18 and the insert 7 are integrally arranged. Further, the width of the guide post may be set as desired, for example, 3mm to 5 mm. The shape of the guide post can also be arranged according to the requirement, such as a rectangular structure or a cylindrical structure. Preferably, the clearance between the guide post 18 and the elastic buckling position 17 is larger than 0.5mm and not larger than 3mm, and the overlarge clearance is not beneficial to guiding the elastic buckling position and limiting the elastic buckling position in the using process. Preferably, a gap of more than 0.5mm and not more than 3mm exists between the guide post 18 and the fixing support 9 after the elastic buckling position is fixedly connected with the fixing support. Too big clearance is unfavorable for leading and spacing in the use to the elasticity knot position. Preferably, the bottom of the guide post 18 has a chamfered structure, for example, a chamfer of not less than 2mm on both sides in the width direction. Through setting up the chamfer, conveniently install the assembly. Furthermore, the bottom of the guide post 18 is 1-3mm lower than the bottom of the elastic buckling position 17, so that the guide and limiting functions can be realized in the assembling process.

The electric heating appliance in another embodiment of the present invention comprises the temperature controller in the above embodiment. The electric heating appliances are, for example, electric cookers, electric pressure cookers, induction cookers, electric stewpots, bread makers, multifunctional pots, kettles, soybean milk makers, coffee makers and the like. The electric heating device generally has a heating container, and a temperature sensing probe in the temperature controller can contact with the heating container to sense temperature. Since the electric heating appliance in this embodiment has all the technical solutions of the above embodiments, the electric heating appliance also has the beneficial effects brought by the above embodiments, and details are not repeated herein.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In the present application, unless otherwise expressly stated or limited, the terms "connected," "connected," and "fixed" are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the utility model can be understood according to specific situations by those skilled in the art.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (22)

1. A temperature controller is characterized by comprising a temperature sensing probe, an insert and a thermistor; the temperature sensing probe and the insert are fixed to form an installation cavity, and the thermistor is directly positioned in the installation cavity; the temperature sensing probe and the insert are made of insulating materials.

2. The temperature controller of claim 1, wherein: the insulating material used by the temperature sensing probe and the insert is at least one of inorganic insulating material or high molecular insulating material.

3. The temperature controller of claim 2, wherein: the temperature sensing probe is made of an inorganic insulating material, and the insert is made of a high-molecular insulating material.

4. The temperature controller of claim 2, wherein: the inorganic insulating material is at least one of a ceramic material, a glass material or a quartz material; the polymer insulating material is at least one of PET, PPS, PEEK, PI or PAR.

5. The temperature controller of claim 1, wherein: the thickness of the temperature sensing probe is 1mm-3 mm.

6. The temperature controller of claim 1, wherein: the temperature sensing probe is of a cover-shaped structure.

7. The temperature controller of claim 1, wherein: the temperature controller also comprises a fuse, and the fuse is directly positioned in the mounting cavity; and the fuse is arranged at a distance from the thermistor.

8. The temperature controller of claim 7, wherein: the insert is provided with a middle rib separating the thermistor and the fuse.

9. The temperature controller of claim 8, wherein: the width of the middle rib is 0.5-1 mm.

10. The temperature controller of claim 8, wherein: the insert is provided with a first edge rib which forms a limiting structure for the thermistor together with the middle rib, and/or the insert is provided with a second edge rib which forms a limiting structure for the fuse together with the middle rib.

11. The thermostat of claim 10, wherein: the width of the first edge rib and/or the second edge rib is 0.5-1 mm.

12. The temperature controller of claim 7, wherein: the thermistor and/or the fuse are/is arranged in close contact with the inner surface of the temperature sensing probe.

13. The temperature controller of claim 7, wherein: the insert is also provided with a lead installation passage connected with the thermistor and/or the fuse; and/or the insert is also provided with a plurality of hollowed structures.

14. The temperature controller of claim 1, wherein: the temperature controller also comprises a fixed bracket and/or a spring; the insert is fixedly connected with the fixed support, and/or the spring is respectively abutted against the insert and the fixed support.

15. The thermostat of claim 14, wherein: the insert is provided with at least two elastic buckling positions, the fixing support is provided with a mounting hole matched with the elastic buckling positions, and the elastic buckling positions are inserted into the mounting hole to realize the fixed connection of the insert and the fixing support.

16. The temperature controller of claim 15, wherein: the insert is provided with two elastic buckling positions.

17. The thermostat of claim 16, wherein: the two elastic buckles of the insert are arranged in a non-parallel mode.

18. The temperature controller of claim 17, wherein: the two elastic buckling positions have an included angle of 1-5 degrees.

19. The temperature controller of claim 15, wherein: the insert is provided with a guide column on each of two sides of the elastic buckle position.

20. The thermostat of claim 19, wherein: the width of the guide post is 3mm-5 mm; and/or the guide post is in a rectangular structure or a cylindrical structure; and/or the clearance between the guide post and the elastic buckling position is more than 0.5mm and not more than 3 mm; and/or after the elastic buckle position is fixedly connected with the fixed support, the gap between the guide post and the fixed support is larger than 0.5mm and not larger than 3 mm; and/or the bottom of the guide post is provided with a guide angle structure, and the guide angle structure is not less than 2 mm; and/or the bottom of the guide post is 1-3mm lower than the bottom of the elastic buckling position.

21. An electric heating appliance comprising a thermostat according to any of claims 1-20.

22. The electric heating appliance according to claim 21, wherein the electric heating appliance is an electric cooker, an electric pressure cooker, an induction cooker, an electric stewpan, a bread maker, a multifunctional pot, a kettle, a soymilk maker, or a coffee maker.

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