CN112890584A

CN112890584A - Temperature control switch of thermos

Info

Publication number: CN112890584A
Application number: CN202110203906.3A
Authority: CN
Inventors: 王贵珍
Original assignee: Individual
Current assignee: Lianjiang Modern Living Appliance Co ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2021-06-04
Anticipated expiration: 2041-02-24
Also published as: CN112890584B

Abstract

The invention relates to the technical field related to switch control, and discloses a temperature control switch of a hot water kettle, which comprises a kettle body, wherein a heating cavity is formed in the inner wall of the kettle body, a heating plate is arranged at the bottom of the inner wall of the kettle body and positioned in the heating cavity, an electric connector is fixedly arranged in the middle of the bottom end of the kettle body, a water outlet nozzle communicated with the heating cavity is fixedly arranged on the side wall of the kettle body, a handle is fixedly arranged on the side wall of the kettle body, and a control cavity communicated with the heating cavity is formed in the inner. The heating plate is provided with the control block, so that violent water vapor generated by heating in a water medium can push the control block to move, the moving contact and the fixed contact are further closed and separated, and meanwhile, a large amount of airflow flows from the exhaust passage after the airflow in the control cavity is boiled, so that a sound is given out, the control cavity is used for reminding a user of the boiling state, and finally, the purposes of pneumatically adjusting the switch and timely warning are achieved.

Description

Temperature control switch of thermos

Technical Field

The invention relates to the technical field related to switch control, in particular to a temperature control switch of a hot water kettle.

Background

The electric heating kettle is a household device which converts electric energy into heat energy, and the electric heating kettle heats cold water to boiling water through the heat energy, so that the electric heating kettle is used for people to use and drink in daily life.

The main principle of the existing electric kettle is as follows: make the electric joint on the kettle body meet with temperature detect switch through the base, secondly, the control by temperature change is through being connected formation route with the hot plate, and then makes the hot plate heat through the electric energy for the water boiling of arranging in the kettle body, and on vapor effect to temperature detect switch through aquatic, and then realize the outage through temperature detect switch, the heating of automatic cutout hot plate promptly.

However, in the actual use process, the temperature-controlled switch mainly realizes the operation of the switch by the principle that the copper sheet expands due to heating, but the copper sheet is fatigued after the copper sheet continuously contracts and expands and is corroded by water vapor, so that the copper sheet switch cannot be normally used.

And the existing copper sheet control switch only plays a role in switching on and off, so that after water is boiled, a user cannot easily find the water, the user cannot be warned in time, meanwhile, the copper sheet switch needs to be pressed manually in the resetting process, the water can be heated again, and the water in the kettle body cannot be continuously kept in a hot state all the time.

Disclosure of Invention

The invention provides a temperature control switch of a thermos, which has the advantages of pneumatic adjustment of the switch, timely warning, strengthened warning strength and automatic heat preservation, and solves the problems in the background technology.

The invention provides the following technical scheme: the utility model provides a temperature control switch of hot-water bottle, includes the kettle body, the heating chamber has been seted up to the inner wall of the kettle body, and the inner wall bottom of the kettle body is located and is equipped with the hot plate in the heating chamber, the bottom middle part fixed mounting of the kettle body has an electric connector, the lateral wall fixed mounting of the kettle body have with the communicating faucet of heating chamber, and the lateral wall fixed mounting of the kettle body has a handle, the inner wall of handle seted up with the communicating control chamber of heating chamber, and the inner wall movable mounting of handle has a control block that is arranged in the control chamber, the fixed surface of control block installs the transfer line, and the top of transfer line runs through the control chamber and is located the control chamber top, the top fixed mounting of transfer line has control button, the inner wall of transfer line seted up with the communicating exhaust passage of control chamber, the inner wall top, and the moving contact is connected with the inner wall of the handle in a sliding way.

Preferably, a resonance cavity is formed by the inner wall of the control cavity and the top of the control block, an anti-falling groove used for communicating the resonance cavity with the air flow of the exhaust passage is formed in the bottom of the side wall of the transmission rod, a plug used for sealing the anti-falling groove is movably mounted at the bottom of the transmission rod, and the plug is matched with the end face of the exhaust passage.

Preferably, the control block is positioned at the top of the control cavity, and the height value of the control block from the heating plate is one point three times of the height value of the water outlet nozzle from the heating plate.

Preferably, the end face of the plug is L-shaped, the plug is composed of a rectangular plate and a cylinder, the rectangular plate on the plug is connected in the anti-falling groove in a sliding mode, and anti-falling blocks are arranged on two sides of the rectangular plate on the plug.

Preferably, the gravity value of the plug is twice of the sliding friction value between the plug and the anti-falling groove.

Preferably, the control block is soft rubber.

Preferably, the number of the fixed contacts is two, the two fixed contacts are vertically arranged on the inner wall of the handle, one fixed contact is connected with the heating plate through a conducting wire, the heating plate is connected with the electric connector through a conducting wire, the other fixed contact is connected with the electric connector through a conducting wire, and the moving contact is a conductive cylindrical metal block.

The invention has the following beneficial effects:

1. the heating plate is provided with the control block, so that violent water vapor generated by heating in a water medium can push the control block to move, the moving contact and the fixed contact are further closed and separated, and meanwhile, a large amount of airflow flows from the exhaust passage after the airflow in the control cavity is boiled, so that a sound is given out, the control cavity is used for reminding a user of the boiling state, and finally, the purposes of pneumatically adjusting the switch and timely warning are achieved.

2. The anti-falling groove is formed in the side wall of the transmission rod, so that whistle can be generated after airflow flowing in the exhaust passage passes through the resonance cavity in the water boiling process, the manual warning effect is greatly improved, meanwhile, the plug is movably arranged on the transmission rod, the resonance cavity can be sealed through the plug, the control block is prevented from automatically falling due to self gravity after being boiled, the purpose of continuous heating is achieved, meanwhile, the exhaust passage is plugged through the plug, the plug can automatically cool down along with time according to the temperature in the control cavity, the control block can automatically move and heat under the appropriate condition through the movement of the plug, and finally the purposes of enhancing the warning strength and automatically preserving heat are achieved.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic cross-sectional view of the entire structure of the present invention;

FIG. 3 is an enlarged view of the point A in FIG. 2;

FIG. 4 is a schematic view of the anti-falling groove structure of the present invention.

In the figure: 1. a kettle body; 100. a heating cavity; 2. heating plates; 3. an electrical connector; 4. a water outlet nozzle; 5. a handle; 6. a control chamber; 7. a control block; 8. a transmission rod; 80. a control button; 9. a moving contact; 10. fixing a contact; 11. a resonance chamber; 12. an exhaust passage; 13. preventing the groove from falling; 14. and (7) a plug.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a temperature control switch of a hot water kettle comprises a kettle body 1, a heating cavity 100 is arranged on the inner wall of the kettle body 1, a heating plate 2 is arranged at the bottom of the inner wall of the kettle body 1 and positioned in the heating cavity 100, an electric connector 3 is fixedly arranged at the middle part of the bottom end of the kettle body 1, a water outlet nozzle 4 communicated with the heating cavity 100 is fixedly arranged on the side wall of the kettle body 1, a handle 5 is fixedly arranged on the side wall of the kettle body 1, a control cavity 6 communicated with the heating cavity 100 is arranged on the inner wall of the handle 5, a control block 7 positioned in the control cavity 6 is movably arranged on the inner wall of the handle 5, a transmission rod 8 is fixedly arranged on the surface of the control block 7, the top end of the transmission rod 8 penetrates through the control cavity 6 and is positioned at the top of the control cavity 6, a control button 80 is fixedly arranged at, the side wall of the transmission rod 8 is fixedly provided with a movable contact 9 matched with a fixed contact 10, the movable contact 9 is connected with the inner wall of the handle 5 in a sliding way, for the purposes of pneumatically adjusting the switch and timely warning, a control block 7 is arranged in a control cavity 6, an exhaust passage 12 is arranged in the transmission rod 8, meanwhile, the exhaust passage 12 penetrates through the control block 7 and is communicated with the control cavity 6, so that in the process that the temperature of a water medium in the control cavity 6 is gradually increased, because air and water vapor are slowly dispersed at the beginning, the air flow can be dispersed from the exhaust passage 12, when water in the control cavity 6 is vigorously boiled, the air flow in the exhaust passage 12 is not enough to completely discharge the air flow in the control cavity 6, the control block 7 is lifted through pressure in the control cavity 6, and the movable contact 9 is separated from the fixed contact 10 by driving the transmission rod 8 through the control block 7, therefore, the purpose of automatic power off when water is boiled is achieved, electricity is switched on and off by pushing of the air flow, and therefore the water boiling device can work repeatedly, fatigue caused by the adoption of the copper sheet is avoided, meanwhile, when the air flow in the control cavity 6 of the water boiling device flows out of the exhaust passage 12 sharply, the exhaust passage 12 can make a sound, and therefore the water boiling device is used for warning people that water boiling work is finished.

Wherein, the inner wall of the control cavity 6 and the top of the control block 7 form a resonance cavity 11, the bottom of the side wall of the transmission rod 8 is provided with an anti-falling groove 13 for communicating the resonance cavity 11 with the air discharge passage 12 in an air flow manner, the bottom of the transmission rod 8 is movably provided with a plug 14 for sealing the anti-falling groove 13, the plug 14 is matched with the end surface of the air discharge passage 12, in order to enhance the warning strength and automatically preserve heat, the top of the control block 7 is provided with the resonance cavity 11, so that the anti-falling groove 13 is blocked by the plug 14 in the air-moving process of the air discharge passage 12, the gas resonance is generated in the resonance cavity 11, the warning sound is enhanced, meanwhile, the medium in the control cavity 6 blocks the anti-falling groove 13 in the heat preservation process, the resonance cavity 11 forms a seal, so that the water outlet nozzle 4 can not fall, and the plug 14 must fall first, and the control block 7 falls, and the driving rod 8 is driven to enable the movable contact 9 to be in contact with the fixed contact 10, so that the plug 14 can carry out autonomous heating and automatic heat preservation heating through the temperature change of air flow in the control cavity 6.

Wherein, the control block 7 is located at the top of the control chamber 6, and the height value of the control block 7 from the heating plate 2 is one point three times of the height value of the water outlet nozzle 4 from the heating plate 2, in order to prevent the control block 7 from being placed in water and being unable to be jacked up by air flow, the height of the control block 7 is higher than the height of the water outlet nozzle 4, so that the water flow in the control chamber 6 is at the maximum level of the heating plate 2, and thus air flow can always occur below the control block 7.

The end face of the plug 14 is in an L shape, the plug 14 is composed of a cuboid plate and a cylinder, the cuboid plate on the plug 14 is connected in the anti-falling groove 13 in a sliding mode, anti-falling blocks are arranged on two sides of the cuboid plate on the plug 14, in order to seal the anti-falling groove 13, the plug 14 is arranged in the anti-falling groove 13 in a vertically sliding mode, communication and sealing between the resonance cavity 11 and the exhaust channel 12 are achieved through opening and closing of the plug 14, meanwhile, the plug 14 is provided with a protruding anti-falling block, and therefore the phenomenon that the plug 14 is separated from the transmission rod 8 in the falling process is avoided.

The gravity value of the plug 14 is twice of the sliding friction value between the plug 14 and the anti-falling groove 13, in order to realize that the plug 14 can independently slide with the transmission rod 8, the gravity value of the plug 14 is twice of the friction value between the plug 14 and the anti-falling groove 13, so that when the airflow in the control cavity 6 pushes the plug 14, the plug 14 can be jacked up, the exhaust channel 12 is sealed by the plug 14, and meanwhile, when the control cavity 6 cannot support the plug 14, the plug 14 can independently break away from the anti-falling groove 13 due to the influence of the gravity of the plug 14, and the

anti-falling grooves

13 and 12 can be conveniently opened.

The control block 7 is made of soft rubber, and in order to enable the air flow in the control cavity 6 to be rapidly expanded, the control block 7 is firstly pushed to be lifted, so that the control block 7 is made of light rubber, and the control block 7 is firstly pushed to control the top of the cavity 6 due to light weight and large force bearing area, so that the movable contact 9 and the fixed contact 10 can be flexibly connected and disconnected, and meanwhile, the sealing between the control block 7 and the side wall can be realized when the control block slides in the control cavity 6 through the rubber of the control block.

Wherein, the quantity of deciding contact 10 is two, and two decide contact 10 and install from top to bottom on the inner wall of handle 5, a decide contact 10 and be connected with hot plate 2 through the wire, and hot plate 2 is connected with electric connector 3 through the wire, another decides contact 10 and is connected with electric connector 3 through the wire, and moving contact 9 is the cylindricality metal block that can electrically conduct, in order to realize the break-make between hot plate 2 and the power, therefore through being equipped with two upper and lower deciding contact 10, thereby through the upper and lower sliding contact between moving contact 9 and deciding contact 10 realize its transport of electric energy, therefore through moving contact 9 control decide the break-make between the contact 10 thereby control hot plate 2 whether heat, be convenient for control.

The working principle is as follows:

heating state: a proper amount of water is added into the heating cavity 100, meanwhile, the water flows into the control cavity 6, then the kettle body 1 is placed on a base (the base is not shown in the figure), the electric connector 3 is communicated with an external power supply through the base, then, as the air flow pressure above the water in the control cavity 6 is the same as the external pressure, the plug 14 drags the control block 7 to move downwards continuously, the movable contact 9 is communicated with the fixed contact 10 through the transmission rod 8, so that the movable contact 9, the fixed contact 10, the electric connector 3 and the heating plate 2 form a passage, and the heating plate 2 starts to heat the water in the heating cavity 100 due to the action of electricity;

automatic stop state: when the heating cavity 100 and the heating plate 2 in the control cavity 6 are continuously heated, the water vapor in the water in the control cavity 6 flows out from the exhaust passage 12, then the air flow in the control cavity 6 is continuously increased after the water in the control cavity is boiled, the air flow rate in the exhaust passage 12 is reduced from low to high, when the air flow in the exhaust passage 12 is insufficient to flow out from the exhaust passage 12, the control block 7 is pushed to move upwards, at the moment, the air flow in the exhaust passage 12 flows quickly, and finally, the driving rod 8 is continuously pushed upwards through the control block 7, so that the driving rod 8 drives the moving contact 9 to slide on the fixed contact 10, and finally, the moving contact 9 does not connect the fixed contact 10, namely, the heating plate 2 is not heating, and at the moment, the automatic power-off stop work is completed;

an alert state: when the airflow in the exhaust passage 12 flows rapidly, the airflow in the exhaust passage 12 passes through the resonance cavity 11, and then resonates in the resonance cavity 11 through the anti-falling groove 13 to make a sound for warning, and finally, the sound is also emitted from the exhaust passage 12 until the control block 7 is attached to the top end of the control cavity 6, so that the warning effect after the heating is realized;

automatic heat preservation state: after the control block 7 is pushed by the airflow in the control cavity 6 to be attached to the top end of the control cavity 6, the airflow flows out of the exhaust channel 12, meanwhile, a large amount of airflow acts on the plug 14, so that the plug 14 is pushed upwards to block the exhaust channel 12, meanwhile, the anti-falling groove 13 is sealed through the rising of the plug 14, airflow exchange between the resonance cavity 11 and the exhaust channel 12 cannot be carried out, a closed space is formed above the control cavity 6, when the airflow in the control cavity 6 is synchronously reduced along with the temperature of water in the control cavity 6, the pressure in the control cavity 6 is reduced through the effect of thermal expansion and cold contraction, and because the sealing is formed between the resonance cavity 11 and the exhaust channel 12 at the moment, when the control block 7 is reduced by the pressure, the control block 7 cannot fall through the negative pressure generated in the resonance cavity 11, and then make the transfer line 8 unable to drive the moving contact 9 and make and connect between the fixed contact 10, therefore, can make the end cap 14 begin to fall by the influence of pressure reduction and self gravity, and after its end cap 14 falls to breaking away from exhaust passage 12, its end cap 14 can make the anti-falling groove 13 open again, and then make the resonance chamber 11 communicate with exhaust passage 12, later, its control block 7 can fall again, make and connect between moving contact 9 and the fixed contact 10, and then the heating plate 2 heats again, and then realize its purpose of maintaining the temperature, meanwhile, as it is at the heat retaining in-process, want the autonomous heating up, through pressing control button 80, make the transfer line 8 can be forced and drive the control block 7 and move downwards, thereby can manual make the moving contact 9 contact with fixed contact 10, realize the heating function of heating plate 2.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Meanwhile, in the drawings of the invention, the filling pattern is only used for distinguishing the layers and is not limited at all.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a temperature detect switch of thermos, includes the kettle body (1), heating chamber (100) have been seted up to the inner wall of the kettle body (1), and the inner wall bottom of the kettle body (1) is located and is equipped with hot plate (2) in heating chamber (100), the bottom middle part fixed mounting of the kettle body (1) has electrical connector (3), the lateral wall fixed mounting of the kettle body (1) has with heating chamber (100) communicating faucet (4), and the lateral wall fixed mounting of the kettle body (1) has handle (5), its characterized in that: the utility model discloses a handle, including handle (5), control chamber (6) that communicate with each other with heating chamber (100) is seted up to the inner wall of handle (5), and the inner wall movable mounting of handle (5) has control block (7) that are arranged in control chamber (6), the fixed surface of control block (7) installs transfer line (8), and the top of transfer line (8) runs through control chamber (6) and be arranged in control chamber (6) top, the top fixed mounting of transfer line (8) has control button (80), the inner wall of transfer line (8) is seted up with communicating exhaust passage (12) of control chamber (6), the inner wall top fixed mounting of handle (5) has fixed contact (10), the lateral wall fixed mounting of transfer line (8) has moving contact (9) with fixed contact (10) looks adaptation, and moving contact (9) and the inner wall sliding connection of handle (5).

2. The temperature controlled switch of a hot water kettle according to claim 1, characterized in that: the anti-falling control device is characterized in that a resonance cavity (11) is formed by the inner wall of the control cavity (6) and the top of the control block (7), an anti-falling groove (13) used for communicating the resonance cavity (11) with an air exhaust passage (12) in an air flow mode is formed in the bottom of the side wall of the transmission rod (8), a plug (14) used for sealing the anti-falling groove (13) is movably installed at the bottom of the transmission rod (8), and the plug (14) is matched with the end face of the air exhaust passage (12).

3. The temperature controlled switch of a hot water kettle according to claim 1, characterized in that: the control block (7) is positioned at the top of the control cavity (6), and the height value of the control block (7) from the heating plate (2) is three times of one point of the height value of the water outlet nozzle (4) from the heating plate (2).

4. The temperature controlled switch of a hot water kettle according to claim 2, characterized in that: the end face of the plug (14) is L-shaped, the plug (14) is composed of a rectangular plate and a cylinder, the rectangular plate on the plug (14) is connected in the anti-falling groove (13) in a sliding mode, and anti-falling blocks are arranged on two sides of the rectangular plate on the plug (14).

5. The temperature controlled switch of a hot water kettle according to claim 2, characterized in that: the gravity value of the plug (14) is twice of the sliding friction value between the plug (14) and the anti-falling groove (13).

6. The temperature controlled switch of a hot water kettle according to claim 1, characterized in that: the control block (7) is made of soft rubber.

7. The temperature controlled switch of a hot water kettle according to claim 1, characterized in that: the number of the fixed contacts (10) is two, the two fixed contacts (10) are vertically arranged on the inner wall of the handle (5), one fixed contact (10) is connected with the heating plate (2) through a lead, the heating plate (2) is connected with the electric connector (3) through a lead, the other fixed contact (10) is connected with the electric connector (3) through a lead, and the movable contact (9) is a conductive cylindrical metal block.