A snap-action temperature controller for use in a rapid heating water heater

Abstract

A kind of for the jump type temperature controller of fast heating water heater, including shell, bottom cover, bracket, contact component and bimetallic disc group, bimetallic disc group includes automatic piece and manual piece in stacked arrangement, automatic piece is arranged on the upper end of manual piece, action lever is arranged on bracket, one end of action lever is in contact with automatic piece, the other end is in contact with dynamic contact plate, normal condition is that fixed contact plate and dynamic contact plate are in contact state, when automatic piece senses temperature is too high, automatic piece is deformed and pushes action lever to make dynamic contact plate and fixed contact plate separate, automatic piece is automatically reset when temperature is low, dynamic contact plate and fixed contact plate are connected and power on;When manual piece senses temperature is too high, manual piece drives automatic piece to be deformed and push action lever to make dynamic contact plate and fixed contact plate separate, press reset lever to reset when reset;Automatic piece plays the role of high temperature temperature limiting when fast heating water heater normal water outlet, automatically reset when temperature is low, manual piece acts to do the last protection when machine works very hard.

Description

Technical Field

[0001] This utility model relates to the field of instantaneous water heater technology, and in particular to a snap-action thermostat for use in instantaneous water heaters. Background Technology

[0002] Conventional instantaneous water heaters use a single manually reset bimetallic snap-action thermostat. It typically activates when the temperature is high, acting as a last resort when the machine is not operating normally. However, it cannot limit the temperature of the hot water during normal use of an instantaneous water heater. Utility Model Content

[0003] In view of the shortcomings and defects of the existing technology, a snap-action thermostat for use in instantaneous water heaters is provided. In order to achieve the purpose of power-off according to different water temperatures, the present invention provides the following technical solution.

[0004] A snap-action thermostat for use in a fast-heating water heater includes a housing, a bottom cover, a bracket, a contact assembly, and a bimetallic disc assembly. The bracket is mounted on the bottom cover, and the bimetallic disc assembly is disposed between the bottom cover and the bracket. The housing is fixedly mounted on the bracket. The contact assembly includes a fixed contact plate and a movable contact plate, which are disposed within the housing. A reset rod is provided at the upper end of the housing, and the reset rod is inserted into the housing. The end of the reset rod is disposed within the housing and abuts against the movable contact plate. The bimetallic disc assembly includes stacked automatic discs and... The manual plate has an automatic plate mounted on its upper end. An actuating rod is mounted on the bracket, with one end of the rod abutting against the automatic plate and the other end against the moving contact plate. Normally, the fixed contact plate and the moving contact plate are in contact. When the automatic plate senses excessively high temperature, it deforms and pushes the actuating rod to disengage the moving contact plate from the fixed contact plate. When the temperature is low, the automatic plate automatically resets, and the moving contact plate and the fixed contact plate are connected and energized. When the manual plate senses excessively high temperature, it causes the automatic plate to deform and push the actuating rod to disengage the moving contact plate from the fixed contact plate. To reset, the reset rod is pressed to return the plate to its original position.

[0005] Compared with existing technologies, the bimetallic disc assembly includes stacked automatic discs and manual discs. When the instantaneous water heater is discharging water normally, the automatic disc plays a role in limiting the temperature at high temperatures. When the temperature is too high, the automatic disc deforms and pushes the action rod to disengage the moving contact plate from the fixed contact plate. When the temperature is low, it automatically resets. When the machine is working abnormally, the manual disc activates to provide final protection.

[0006] Furthermore, the outer shell is provided with a first limiting platform and a second limiting platform. The movable contact plate is U-shaped and includes a movable section, a connecting section and a fixed section. The connecting section integrally connects the movable section and the fixed section. The upper end face of the fixed section abuts against the second limiting platform. The upper end face of the fixed contact plate abuts against the first limiting platform.

[0007] Through the above improvements, a first limiting platform and a second limiting platform are provided inside the outer casing. The upper end face of the fixed contact plate abuts against the first limiting platform, which can improve the stability of the fixed contact plate inside the outer casing. The moving contact plate includes a movable section, a connecting section and a fixed section. The movable section can undergo elastic deformation under the action rod. The upper end face of the fixed section abuts against the second limiting platform, which can improve the stability of the moving contact plate inside the outer casing.

[0008] Furthermore, the first limiting platform and the second limiting platform are respectively provided with a first insertion hole and a second insertion hole. The upper end of the outer shell is provided with a fixing groove. The fixing groove is symmetrically provided with a first terminal and a second terminal. The first terminal is provided with a first connecting rivet inserted into the first insertion groove. The rivet head at one end of the first connecting rivet abuts against the first terminal, and the rivet head at the other end abuts against the lower end face of the fixed contact plate. The second terminal is provided with a second connecting rivet inserted into the second insertion groove. The rivet head at one end of the second connecting rivet abuts against the second terminal, and the rivet head at the other end abuts against the lower end face of the movable contact plate.

[0009] Through the above improvements, the first limiting platform and the second limiting platform are respectively provided with a first insertion hole and a second insertion hole. The first connecting rivet on the first terminal is set in the first insertion hole, and the second connecting rivet on the second terminal is set in the second insertion hole, which can restrict the movement of the first connecting rivet and the second connecting rivet. One end of the first connecting rivet abuts against the first terminal, and the other end abuts against the lower end surface of the fixed contact plate, making the installation of the fixed contact plate in the housing more stable. One end of the second connecting rivet abuts against the second terminal, and the other end abuts against the lower end surface of the moving contact plate, making the installation of the moving contact plate in the housing more stable.

[0010] Furthermore, a protrusion is provided on the side of the movable end near the bracket, and a groove is provided on the side of the movable end away from the bracket. The end of the reset rod is fitted into the groove, and the protrusion abuts against the actuating rod.

[0011] Through the above improvements, a protrusion is provided on the side of the movable end near the bracket. The protrusion can better abut against the upper end of the actuating rod, making it easier and less strenuous to lift the movable section when the actuating rod rises. A groove is provided on the side of the movable end away from the bracket, and the end of the reset rod is fitted into the groove. This allows the reset rod to be lifted synchronously when the movable section is lifted. Furthermore, the groove makes the fit between the reset rod and the movable section more stable, preventing displacement during use.

[0012] Furthermore, the outer shell is provided with a plug-in interface, the reset rod is plugged into the plug-in interface, and the reset rod is provided with a protruding ring, which reaches the limit position of movement when it abuts against the inner wall of the outer shell.

[0013] Through the above improvements, the insertion interface on the outer shell allows the reset rod to move up and down within the outer shell. Furthermore, a protruding ring is provided on the reset rod, which abuts against the inner wall of the outer shell to prevent the reset rod from sliding out of the outer shell during up and down movement, thus affecting its use.

[0014] Furthermore, the center cross-sections of the automatic piece and the manual piece are arc-shaped in the initial state.

[0015] With the above improvements, the center cross-section of the automatic and manual plates is set to be arc-shaped. At high temperatures, the automatic and manual plates will expand due to heat, causing the arc-shaped cross-section to straighten, thereby lifting the actuating lever.

[0016] Furthermore, the outer shell has a boss extending toward the bottom cover, and the upper end of the bottom cover extends toward the outer shell to form a buckle, with the lower end face of the buckle abutting against the upper end face of the boss.

[0017] With the above improvements, the outer shell has a boss extending towards the bottom cover, and the upper end of the bottom cover extends towards the outer shell to form a buckle. During installation, the lower end face of the buckle abuts against the upper end face of the boss, so that the outer shell can be better fixed to the bottom cover and prevent it from falling off during use. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of a snap-action thermostat used in instantaneous water heaters; Figure 2 A top-view structural diagram of a snap-action thermostat used in instant water heaters; Figure 3 A cross-sectional view of the AA section of a snap-action thermostat used in a fast-heating water heater; Figure 4 This is a cross-sectional view of the BB section of a snap-action thermostat used in instantaneous water heaters.

[0019] The components include: 1. Outer shell; 1.1. First limiting platform; 1.2. Second limiting platform; 1.3. First insertion hole; 1.4. Second insertion hole; 1.5. Fixing groove; 1.6. Insertion interface; 1.7. Boss; 2. Bottom cover; 2.1. Buckle; 3. Bracket; 3.1. Actuating rod; 4. Contact assembly; 4.1. Fixed contact plate; 4.2. Moving contact plate; 4.21. Moving section; 4.22. Connecting section; 4.23. Fixing section; 4.24. Protrusion; 4.25. Groove; 5. Bimetallic disc assembly; 5.1. Automatic plate; 5.2. Manual plate; 6. Reset rod; 6.1. Protruding ring; 7. First terminal; 7.1. First connecting rivet; 8. Second terminal; 8.1. Second connecting rivet. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] like Figures 1 to 4As shown, a snap-action thermostat for use in a fast-heating water heater includes a housing 1, a bottom cover 2, a bracket 3, a contact assembly 4, and a bimetallic disc assembly 5. The bracket 3 is mounted on the bottom cover 2, and the bimetallic disc assembly 5 is disposed between the bottom cover 2 and the bracket 3. The housing 1 is fixedly mounted on the bracket 3. The contact assembly 4 includes a fixed contact plate 4.1 and a movable contact plate 4.2, which are disposed inside the housing 1. A reset rod 6 is provided at the upper end of the housing 1, which is inserted into the housing 1. The end of the reset rod 6 is disposed inside the housing 1 and abuts against the movable contact plate 4.2. The bimetallic disc assembly 5 includes stacked automatic discs 5.1 and manual discs 5.2. 5.1 An actuating rod 3.1 is mounted on the upper end of the manual plate 5.2 and on the bracket 3. One end of the actuating rod 3.1 abuts against the automatic plate 5.1, and the other end abuts against the moving contact plate 4.2. Under normal circumstances, the fixed contact plate 4.1 and the moving contact plate 4.2 are in contact. When the automatic plate 5.1 senses that the temperature is too high, the automatic plate 5.1 deforms and pushes the actuating rod 3.1 to disengage the moving contact plate 4.2 from the fixed contact plate 4.1. When the temperature is low, the automatic plate 5.1 automatically resets, and the moving contact plate 4.2 is connected to the fixed contact plate 4.1 and energized. When the manual plate 5.2 senses that the temperature is too high, the manual plate 5.2 drives the automatic plate 5.1 to deform and push the actuating rod 3.1 to disengage the moving contact plate 4.2 from the fixed contact plate 4.1. To reset, press the reset rod 6 to reset it.

[0023] The center cross-sections of the automatic plate 5.1 and the manual plate 5.2 are initially arc-shaped. At high temperatures, the automatic plate 5.1 and the manual plate 5.2 will expand due to heat, causing the arc-shaped cross-sections to straighten, thereby lifting the actuating rod 3.1.

[0024] The outer casing 1 is provided with a first limiting platform 1.1 and a second limiting platform 1.2. The upper end surface of the fixed contact plate 4.1 abuts against the first limiting platform 1.1, which can improve the stability of the fixed contact plate 4.1 in the outer casing 1.

[0025] The movable contact plate 4.2 is U-shaped and includes a movable section 4.21, a connecting section 4.22, and a fixed section 4.23. The connecting section 4.22, the movable section 4.21, and the fixed section 4.23 are integrally connected. The upper end face of the fixed section 4.23 abuts against the second limiting platform 1.2. The movable section 4.21 is affected by the actuating rod 3.1. After the actuating rod 3.1 rises, the movable section 4.21 is lifted up, thereby separating the movable contact plate 4.2 from the fixed contact plate 4.1. The upper end face of the fixed section 4.23 abuts against the second limiting platform 1.2, which can improve the stability of the movable contact plate 4.2 within the outer shell 1.

[0026] A protrusion 4.24 is provided on the side of the movable end near the bracket 3. The protrusion 4.24 abuts against the actuating rod 3.1. The protrusion 4.24 on the movable end can better abut against the upper end of the actuating rod 3.1, so that the actuating rod 3.1 can more easily and effortlessly lift the movable section 4.21 when it rises.

[0027] A groove 4.25 is provided on the side of the movable end away from the bracket 3. The end of the reset rod 6 is fitted into the groove 4.25, so that when the movable section 4.21 is lifted, it can synchronously drive the reset rod 6 to be lifted. The groove 4.25 can make the fit between the reset rod 6 and the movable section 4.21 more stable and prevent displacement during use.

[0028] The first limiting platform 1.1 and the second limiting platform 1.2 are respectively provided with a first insertion hole 1.3 and a second insertion hole 1.4. The upper end of the outer shell 1 is provided with a fixing groove 1.5. The first terminal 7 and the second terminal 8 are symmetrically arranged in the fixing groove 1.5. The fixing groove 1.5 can better install the first terminal 7 and the second terminal 8.

[0029] The first terminal 7 is provided with a first connecting rivet 7.1 that is inserted into the first insertion slot. The rivet head at one end of the first connecting rivet 7.1 abuts against the first terminal 7, and the rivet head at the other end abuts against the lower end face of the fixed contact plate 4.1, so that the fixed contact plate 4.1 is more stably installed in the housing 1.

[0030] The second terminal 8 is provided with a second connecting rivet 8.1 that is inserted into the second insertion slot. The rivet head at one end of the second connecting rivet 8.1 abuts against the second terminal 8, and the rivet head at the other end abuts against the lower end face of the movable contact plate 4.2, making the installation of the movable contact plate 4.2 in the housing 1 more stable.

[0031] The outer casing 1 is provided with a plug-in interface 1.6, and the reset rod 6 is plugged into and fitted into the plug-in interface 1.6, so that the reset rod 6 can move up and down inside the outer casing 1. The reset rod 6 is provided with a protruding ring 6.1. When the protruding ring 6.1 abuts against the inner wall of the outer casing 1, it reaches the limit position of movement. The protruding ring 6.1 can abut against the inner wall of the outer casing 1 to prevent the reset rod 6 from sliding out of the outer casing 1 when sliding up and down, which would affect its use.

[0032] The outer shell 1 has a boss 1.7 extending towards the bottom cover 2. The upper end of the bottom cover 2 extends towards the outer shell 1 to form a buckle 2.1. During installation, the lower end face of the buckle 2.1 abuts against the upper end face of the boss 1.7, so that the outer shell 1 can be well fixed to the bottom cover 2 and prevent it from falling off during use.

[0033] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A snap-action thermostat for use in instantaneous water heaters, characterized in that: The device includes a housing (1), a bottom cover (2), a bracket (3), a contact assembly (4), and a bimetallic disc assembly (5). The bracket (3) is mounted on the bottom cover (2), and the bimetallic disc assembly (5) is disposed between the bottom cover (2) and the bracket (3). The housing (1) is fixedly mounted on the bracket (3). The contact assembly (4) includes a fixed contact plate (4.1) and a movable contact plate (4.2). The fixed contact plate (4.1) and the movable contact plate (4.2) are connected to each other. A plate (4.2) is disposed inside the outer casing (1). A reset rod (6) is disposed at the upper end of the outer casing (1). The reset rod (6) is inserted into and fitted onto the outer casing (1). The end of the reset rod (6) is disposed inside the outer casing (1) and abuts against the moving contact plate (4.2). The bimetallic disc assembly (5) includes stacked automatic discs (5.1) and manual discs (5.2). The automatic discs (5.1) are disposed inside the outer casing (1). At the upper end of the manual plate (5.2), an actuating rod (3.1) is provided on the bracket (3). One end of the actuating rod (3.1) abuts against the automatic plate (5.1), and the other end abuts against the moving contact plate (4.2). Under normal circumstances, the fixed contact plate (4.1) and the moving contact plate (4.2) are in contact. When the automatic plate (5.1) senses that the temperature is too high, the automatic plate (5.1) deforms and pushes the actuating rod (3.1) to move the moving contact plate (4.2). 2) When the temperature is low, the automatic plate (5.1) automatically resets and the moving plate (4.2) is connected to the fixed plate (4.1) for power supply. When the manual plate (5.2) senses that the temperature is too high, the manual plate (5.2) drives the automatic plate (5.1) to deform and push the action rod (3.1) to disengage the moving plate (4.2) from the fixed plate (4.1). When resetting, press the reset rod (6) to reset it.

2. A snap-action thermostat for use in a fast-heating water heater according to claim 1, characterized in that: The outer shell (1) is provided with a first limiting platform (1.1) and a second limiting platform (1.2). The movable contact plate (4.2) is U-shaped in general. The movable contact plate (4.2) includes a movable section (4.21), a connecting section (4.22) and a fixed section (4.23). The connecting section (4.22) integrally connects the movable section (4.21) and the fixed section (4.23). The upper end face of the fixed section (4.23) abuts against the second limiting platform (1.2). The upper end face of the fixed contact plate (4.1) abuts against the first limiting platform (1.1).

3. A snap-action thermostat for use in a fast-heating water heater according to claim 2, characterized in that: The first limiting platform (1.1) and the second limiting platform (1.2) are respectively provided with a first insertion hole (1.3) and a second insertion hole (1.4). The upper end of the outer shell (1) is provided with a fixing groove (1.5). The fixing groove (1.5) is symmetrically provided with a first terminal (7) and a second terminal (8). The first terminal (7) is provided with a first connecting rivet (7.1) inserted into the first insertion hole (1.3). The rivet head at one end of the first connecting rivet (7.1) abuts against the first terminal (7), and the rivet head at the other end abuts against the lower end face of the fixed contact plate (4.1). The second terminal (8) is provided with a second connecting rivet (8.1) inserted into the second insertion hole (1.4). The rivet head at one end of the second connecting rivet (8.1) abuts against the second terminal (8), and the rivet head at the other end abuts against the lower end face of the moving contact plate (4.2).

4. A snap-action thermostat for use in a fast-heating water heater according to claim 2, characterized in that: The movable section (4.21) has a protrusion (4.24) on the side near the bracket (3), and a groove (4.25) on the side away from the bracket (3). The end of the reset rod (6) is fitted into the groove (4.25), and the protrusion (4.24) abuts against the actuating rod (3.1).

5. A snap-action thermostat for use in a fast-heating water heater according to claim 1, characterized in that: The outer shell (1) is provided with a plug-in interface (1.6), the reset rod (6) is plugged into the plug-in interface (1.6), and the reset rod (6) is provided with a protruding ring (6.1). When the protruding ring (6.1) abuts against the inner wall of the outer shell (1), it reaches the limit position of movement.

6. A snap-action thermostat for use in a fast-heating water heater according to claim 1, characterized in that: The center cross-sections of the automatic piece (5.1) and the manual piece (5.2) are arc-shaped in the initial state.

7. A snap-action thermostat for use in a fast-heating water heater according to claim 1, characterized in that: The outer shell (1) has a boss (1.7) extending toward the bottom cover (2), and the upper end of the bottom cover (2) extends toward the outer shell (1) to form a buckle (2.1), with the lower end face of the buckle (2.1) abutting against the upper end face of the boss (1.7).

Images