Temperature controller with dry burning prevention structure

Abstract

The utility model discloses a temperature controller with an anti-dry-burning structure. The problems that the service life of a bimetallic strip and a contact piece is greatly influenced and potential safety hazards exist due to the fact that an existing temperature controller is repeatedly cut off and closed are mainly solved. The device is characterized by further comprising a mounting plate (3) arranged on the base, and a guide groove (31) is formed in the mounting plate; the elastic piece is arranged on the mounting plate, the unlocking piece (34) is movably arranged on the base, the locking rod (32) is movably arranged on the mounting plate, and the locking rod comprises a first position and a second position, the first position is matched with the driving piece in a blocking manner under the action of the elastic piece, so that the driving piece is located at the first position to drive a moving contact to be disconnected, and the second position is separated from the driving piece under the driving of the unlocking piece. According to the temperature controller with the anti-dry-burning structure provided by the utility model, after the temperature controller is broken due to overheating, the locking piece extends into the temperature controller and is in limiting fit with the driving piece to prevent the locking piece from resetting, so that the moving contact is always in a breaking state, dry burning is prevented, the service lives of the bimetallic strip and the contact piece are prolonged, and potential safety hazards are eliminated.

Description

Technical Field

[0001] The utility model relates to the field of temperature controllers, and in particular to a temperature controller with an anti-dry burning structure. Background Art

[0002] Electric kettles are widely used because they are easy to use, have high power, heat up quickly, and are relatively hygienic, especially in restaurants and hotels, where they also save the workload of service staff.

[0003] However, after the electric kettle boils the water, it needs to automatically cut off the power supply, or sometimes improper operation may cause dry boiling and other problems, so a thermostat is needed. Although there are many electric kettle thermostats in the prior art, there are still the following defects: the bimetallic strip of the thermostat can drive the moving contact to disconnect after overheating, but its temperature will recover after cooling down, and the circuit will be connected again, causing secondary dry boiling. This repetition has a great impact on the life of the bimetallic strip and also poses a safety hazard. Utility Model Content

[0004] In order to overcome the shortcomings of the background technology, the utility model provides a thermostat with an anti-dry burning structure, which mainly solves the problem that the current thermostat will repeatedly cut off and close, which has a great impact on the life of the bimetallic strip and also poses a safety hazard.

[0005] The technical solution of the utility model is:

[0006] A temperature controller with an anti-dry-burning structure comprises a base and a support plate, wherein the base is provided with a moving contact, the support plate is provided with a temperature-sensitive switch, and the temperature-sensitive switch drives the moving contact to move through a driving member. The temperature controller also comprises a mounting plate, which is provided on the base and has a guide groove; an elastic member, which is provided on the mounting plate, an unlocking member, which is movably provided on the base, and a locking rod, which is movably provided on the mounting plate, and comprises a first position, which is blocked and cooperated with the driving member under the action of the elastic member so that it is in a first position, which drives the moving contact to be disconnected, and a second position, which is driven by the unlocking member and leaves the driving member.

[0007] Two locking members are arranged on the base, and the elastic member comprises a fixed end and a movable end, and one of the movable ends is arranged opposite to one of the locking members.

[0008] It also includes a first slope, which is arranged on the driving member, and a second slope, which is arranged on the locking rod, and the second slope is slidably matched with the first slope.

[0009] It also includes a guide seat, which is arranged on the mounting plate. The guide seat is provided with a guide hole, and the bottom of the unlocking member is provided with a guide column that slides with the guide hole.

[0010] A touch rod for cooperating with the lower coupler is provided at the bottom of the guide column.

[0011] It also includes a second elastic member, which is used to apply force to enable the unlocking member to drive the locking member to be in the second position.

[0012] It also includes a crossbeam, which is arranged on the locking rod, partially extends out of the guide groove and is provided with a first pushing surface, and the bottom of the unlocking member is provided with a second pushing surface that matches the first pushing surface.

[0013] The mounting plate comprises a mounting beam, the guide groove is arranged in the mounting beam, a limiting plate is arranged on the mounting beam, and a limiting groove for the movable end to extend into is formed between the limiting plate and the mounting beam.

[0014] The mounting plate comprises a mounting seat, a second guide groove is arranged on the mounting seat, and part of the driving member is arranged in the second guide groove.

[0015] The locking piece is provided with a protrusion matched with the movable end.

[0016] The beneficial effects of the utility model are as follows: the utility model provides a temperature controller with an anti-dry-burning structure. After being disconnected due to overheating, the locking part will extend into and cooperate with the driving part to prevent it from resetting, so that the moving contact is always in a disconnected state, thereby preventing dry burning, increasing the service life of the bimetallic strip and the contact piece, and eliminating safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the utility model.

[0018] Figure 2 It is an internal stereoscopic schematic diagram of an embodiment of the utility model.

[0019] Figure 3 It is an internal schematic diagram of an embodiment of the utility model.

[0020] Figure 4 It is a partial cross-sectional schematic diagram of an embodiment of the utility model.

[0021] Figure 5 It is a partial three-dimensional schematic diagram of an embodiment of the utility model.

[0022] Figure 6 It is a three-dimensional schematic diagram of an unlocking member according to an embodiment of the utility model.

[0023] Figure 7 The figure is a three-dimensional schematic diagram of a locking rod according to an embodiment of the utility model.

[0024] Figure 8 It is a three-dimensional schematic diagram of a driving member according to an embodiment of the utility model. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings: as shown in the figure, a temperature controller with an anti-dry burning structure includes a base 1 and a support plate 2, the base is provided with a moving contact 11, the support plate is provided with a temperature sensing switch 21, the temperature sensing switch drives the moving contact to move through a driving member 22, and also includes a mounting plate 3, which is arranged on the base, and the mounting plate is provided with a guide groove 31; an elastic member 33, which is arranged on the mounting plate, an unlocking member 34, which is movably arranged on the base, and a locking rod 32, which is movably arranged on the mounting plate, which includes a first position in which the elastic member blocks and cooperates with the driving member under the action of the elastic member to drive the moving contact to be disconnected, and a second position in which the driving member is left under the drive of the unlocking member. The temperature control switch includes a bimetallic strip, which deforms when heated and pushes the driving member to move, thereby driving the moving contact to break. The driving member can be a top rod-like structure. The mounting plate can be detachably mounted on the base or can be a part of the base. A guide groove is provided on the mounting plate. The locking member is movably matched with the guide groove. Specifically, it can be movably mounted in the guide groove back and forth. The elastic member can be a spring, and its main purpose is to drive the locking member to extend into and match the driving member with a limit position, so that the driving member will not be reset due to the elastic force of the moving contact. Specifically, a block can be set on the driving member and blocked by the locking member, and then an unlocking member is also provided. However, when locking protection is not required, the locking rod is driven backward by the unlocking member. At this time, the driving member can return to its initial position, and the moving contact and the static contact are closed.

[0026] In this embodiment, as shown in the figure, two locking members are provided on the base, and the elastic member includes a fixed end 331 and a movable end 332, and one movable end is arranged opposite to one locking member. The elastic member is in a Y-shaped structure as a whole, and its fixed end is used for fixed installation. Two fixed columns can be set on the mounting plate, and the fixed end is sleeved on one fixed column, and the other fixed column is used for limiting. The movable end can be opened or closed, and has a tendency to open. When opened, it pushes the locking member to the first position.

[0027] In this embodiment, as shown in the figure, it also includes a first slope 41, which is provided on the driving member, and a second slope 42, which is provided on the locking rod, and the second slope is slidably matched with the first slope. The first slope and the second slope that are slidably matched can prevent the driving member from getting stuck "halfway", and the overall movement is smoother.

[0028] In this embodiment, as shown in the figure, it also includes a guide seat 12, which is arranged on the mounting plate. The guide seat is provided with a guide hole 121, and the bottom of the unlocking member is provided with a guide column 341 that slidably cooperates with the guide hole.

[0029] In this embodiment, as shown in the figure, a contact rod 342 for cooperating with the lower coupler is provided at the bottom of the guide column.

[0030] In this embodiment, as shown in the figure, a second elastic member 343 is also included, and the second elastic member is used to apply force to make the unlocking member drive the locking member so that the locking member is in the second position. The guide column is arranged in the wire hole and is applied with downward force by the second elastic member. The second elastic member can be a spring. A sink groove is provided on the upper end surface of the unlocking member to install the spring. In addition, a touch rod is provided at the bottom of the guide column. When the lower coupler is installed, the touch rod is subjected to force to overcome the force of the spring to drive the unlocking member to rise, so that it will not contact the locking member. The locking member will always maintain the first position under the action of the elastic member. This is to realize the function of preventing dry boiling when the kettle is working. When the kettle is not working (that is, the kettle is lifted and separated from the lower coupler), the normal closure of the moving contact can be realized.

[0031] In this embodiment, as shown in the figure, a crossbeam 322 is also included, which is arranged on the locking rod, partially extends out of the guide groove and is provided with a first pushing surface 323, and the bottom of the unlocking member is provided with a second pushing surface 344 that matches the first pushing surface. After the kettle is lifted, the bottom of the touch rod is no longer in contact with the lower coupler. At this time, the spring drives the unlocking member to move downward, and the second pushing surface on the unlocking member drives the first pushing surface to retract the locking rod to the second position.

[0032] In this embodiment, as shown in the figure, the mounting plate includes a mounting beam 35, the guide groove is provided in the mounting beam, a limiting plate 351 is provided on the mounting beam, and a limiting groove 352 for the movable end to extend into is formed between the limiting plate and the mounting beam. The limiting plate can be an L-shaped structure and is provided on both sides, so that the movable end is limited by the limiting groove after being extended into and will not fall out.

[0033] In this embodiment, as shown in the figure, the mounting plate includes a mounting seat 36, the mounting seat is provided with a second guide groove 361, and part of the driving member is arranged in the second guide groove. The driving member moves in the second guide groove and plays a role of fixed guide.

[0034] In this embodiment, as shown in the figure, the locking member is provided with a protrusion 325 that cooperates with the movable end. The movable end cooperates with the protrusion to push the locking member outward.

[0035] In the description of the present invention, 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.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] The embodiments described with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention. The embodiments should not be regarded as limiting the present invention, but any improvements based on the spirit of the present invention should be within the scope of protection of the present invention.

Claims

1. A temperature controller with an anti-dry-burning structure, comprising a base (1) and a support plate (2), wherein the base is provided with a moving contact (11), the support plate is provided with a temperature-sensing switch (21), and the temperature-sensing switch drives the moving contact to move through a driving member (22), characterized in that: Also includes A mounting plate (3) is disposed on the base, wherein a guide groove (31) is provided on the mounting plate; The elastic member (33) is arranged on the mounting plate. The unlocking member (34) is movably arranged on the base. A locking rod (32) is movably arranged on the mounting plate, and comprises a first position in which the locking rod cooperates with the driving member under the action of the elastic member to drive the moving contact to disconnect, and a second position in which the locking rod leaves the driving member under the action of the unlocking member.

2. The thermostat with an anti-dry burning structure according to claim 1, characterized in that: Two locking members are provided on the base, and the elastic member comprises a fixed end (331) and a movable end (332), and one of the movable ends is arranged opposite to one of the locking members.

3. The thermostat with an anti-dry burning structure according to claim 2, characterized in that: Also includes A first slope (41) is provided on the driving member, A second slope (42) is provided on the locking rod, and the second slope is slidably matched with the first slope.

4. A thermostat with an anti-dry burning structure according to any one of claims 1 to 3, characterized in that: Also includes A guide seat (12) is arranged on the mounting plate, a guide hole (121) is provided on the guide seat, and a guide column (341) is provided at the bottom of the unlocking member to slide in cooperation with the guide hole.

5. The thermostat with an anti-dry burning structure according to claim 4, characterized in that: A touch rod (342) for cooperating with the lower coupler is provided at the bottom of the guide column.

6. The thermostat with an anti-dry burning structure according to claim 3, characterized in that: It also includes a second elastic member (343), the second elastic member being used to apply force so that the unlocking member drives the locking member so that the locking member is in the second position.

7. The thermostat with an anti-dry burning structure according to claim 1, characterized in that: It also includes a crossbeam (322) which is arranged on the locking rod, partially extends out of the guide groove and is provided with a first pushing surface (323); the bottom of the unlocking member is provided with a second pushing surface (344) which matches the first pushing surface.

8. The thermostat with an anti-dry burning structure according to claim 2, characterized in that: The mounting plate comprises a mounting beam (35), the guide groove is arranged in the mounting beam, a limit plate (351) is arranged on the mounting beam, and a limit groove (352) for the movable end to extend into is formed between the limit plate and the mounting beam.

9. The thermostat with an anti-dry burning structure according to claim 1, characterized in that: The mounting plate comprises a mounting seat (36), the mounting seat being provided with a second guide groove (361), and part of the driving member being arranged in the second guide groove.

10. The thermostat with an anti-dry burning structure according to claim 6, characterized in that: The locking piece is provided with a protrusion (325) that matches the movable end.

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