CN2168514Y

CN2168514Y - Automatically electric heater for water pot

Info

Publication number: CN2168514Y
Application number: CN 93231289
Authority: CN
Inventors: 邱祖培
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-06-28
Filing date: 1993-06-28
Publication date: 1994-06-15
Anticipated expiration: 2003-06-28

Abstract

The utility model relates to a self control electric heater for hot water kettles, which is formed by the connection of an electric heating pipe and a self control switch mechanism. The self control switch mechanism is composed of a push rod, a dynamic contact and a static contact, and a temperature sensing sheet which can generate deformation in high temperature. The temperature sensing sheet is fixedly arranged on the heat transfer sheet of a temperature controlling chamber with small air intakes. The dynamic contact or the static contact is connected with the electric heating pipe. The side wall of the temperature controlling chamber with small air intakes is communicated with an eduction pipe. The utility model has simple structure and firm installation. The utility model can ensure the cutting of power supply when water is boiling, and the state of the power supply can not be reset automatically.

Description

Automatically electric heater for water pot

The utility model relates to a kind of hot-water bottle automatic control electric heater unit, promptly has the hot-water bottle electric heater of boiling water automatic control breaker device.

Its boiling water autocontrol switch of present existing electric kettle has two kinds of forms, the one, make dish-shape component and the Kick type temperature controller that constitutes by thrermostatic bimetal-plate, this temperature controller is because of being subjected to the restriction of temperature-sensing element performance and installation method, be difficult to make operating temperature just on boiled water temperature, and generally can not self-locking, i.e. heating repeatedly, easily cause energy waste; Another is to utilize the steam pressure of boiling water to push the votage control switch that diaphragm triggers, though this switch does not have the shortcoming of above-mentioned autocontrol switch, but complex structure, installation is difficult for firmly, and is difficult to make its decorative appearance to beautify.Autocontrol switch is installed on the pot lid more in addition, complex structure.

The purpose of this utility model with regard to be to overcome and avoid the shortcoming of prior art and provide a kind of simple in structure, install firmly, can cut off the power supply when the boiling water, and no longer automatically reset the novel hot water kettle automatic control electric heater unit that convenience attractive in appearance is durable.The autocontrol switch of this device can place the diverse location of kettle body.

The utility model is to adopt following measure to realize its purpose.

The utility model that connects and composes by electric heating tube and autocontrol switch mechanism, its autocontrol switch mechanism produces the thermal sensitive piece of distortion and forms by push rod, sound contact and when the high temperature, the thermal sensitive piece fixed in position is on the heat transfer sheet that has on the temperature control chamber of little admission opening, and movable contact or stationary contact are connected with electric heating tube.The sidewall that has the temperature control chamber of little admission opening connects a steam outlet pipe.The front end of thermal sensitive piece folding has or can catch on stopping of movable contact with one and collude or have the mouth that stops that catch on the movable contact is gone in an energy intercalation.Thermal sensitive piece is strip thrermostatic bimetal-plate or memorial alloy sheet.Thermal sensitive piece can also be dish-shaped thrermostatic bimetal-plate or memorial alloy sheet, settle a pusher in the central vertical of dish-shaped thermal sensitive piece, pusher has with its front end folding or can catch on stopping of movable contact with one and collude or have the elastic sheet metal that stops mouth that an energy intercalation goes into the movable contact upper stop piece and touch mutually.Little admission opening on the temperature control chamber connects a steam inducing tube.The utility model autocontrol switch mechanism can also be the manual replacement type Kick type temperature controller, the temperature-sensitive face fixed in position of temperature controller is having on the temperature control chamber of little admission opening, the contact of temperature controller is connected with electric heating tube, and the little admission opening on the temperature control chamber also connects a steam inducing tube.

The drawing of accompanying drawing is described as follows:

Fig. 1 is installed in the structure cutaway view of hot-water bottle kettle body side for the utility model;

Fig. 2 is the front view of autocontrol switch mechanism;

Fig. 3 is the cutaway view along A-A direction among Fig. 2;

Fig. 4 is the autocontrol switch mechanism cutaway view of dish for thermal sensitive piece;

Fig. 5 is the structure cutaway view of hand-reset Kick type temperature controller for autocontrol switch mechanism;

Fig. 6 is placed in structure cutaway view on the pot lid for the utility model;

Fig. 7 is placed in structure vertical view on the pot lid for the utility model;

Fig. 8, Fig. 9 are the syndeton front view and the vertical view of a kind of thermal sensitive piece and heat transfer sheet;

Figure 10, Figure 11 are the syndeton front view and the vertical view of another kind of thermal sensitive piece and heat transfer sheet;

Figure 18 is a kind of annexation figure of thermal sensitive piece and movable contact;

Figure 12 and Figure 13, Figure 14 and Figure 15, Figure 16 and Figure 17 are respectively the left view and the front view of three kinds of thermal sensitive pieces and movable contact syndeton.

Below in conjunction with accompanying drawing the utility model is described further.

The utility model is to be connected and composed by electric heating tube (11) and autocontrol switch mechanism (9), and the utility model can be placed in the side of hot-water bottle (1) kettle body (10), can also be placed on the pot lid (2).One cover is arranged by movable contact (16) in the shell (12) of autocontrol switch mechanism (9), stationary contact (15), contact holder (14), push rod (8) and thermal sensitive piece (17) composition that when high temperature, can produce distortion, push rod (8) promotes and its movable contact that touches mutually (16), thermal sensitive piece (17) fixed in position is on the heat transfer sheet (13) in the temperature control chamber (21) that has little admission opening (20), stationary contact (15) is connected with electric heating tube (11), another contact of movable contact (16) and electric heating tube (11) is connected with power supply V, the sidewall that has the temperature control chamber (21) of little admission opening (20) is communicated with a steam outlet pipe (18), and the front end folding of thermal sensitive piece (17) has or can catch on the stopping of catch (37) mouthful (38) that stopping of movable contact (16) collude (32) or have an energy intercalation movable contact (16) with one.Little admission opening (20) on the temperature control chamber (21) connects a steam inducing tube (6), steam inducing tube (6) is fixed by the fixed mount (5) in the kettle (1), another air intake (3) of steam inducing tube (6) places the interior boiling water of kettle (1) (7) water surface top, certainly, steam inducing tube (6) also can be by outer boiling water (7) water surface top of stretching in the kettle (1) of visiting of kettle (1).Behind the boiling water, steam is discharged by slit between pot lid (2) and kettle body (10) and venthole (4) earlier, after water fully seethes with excitement, produces pressure in the kettle, makes the part water vapour be able to descend along steam inducing tube (6), enters temperature control chamber (21).A short steam inducing tube (6) can be directly be communicated with for the little admission opening (20) on the temperature control chamber (21) that is placed in the pot lid (2), certainly, steam inducing tube (6) can also be do not lacked, and directly by little admission opening (20) admission.Thermal sensitive piece (17) in the autocontrol switch mechanism (9) can be selected strip thrermostatic bimetal-plate or memorial alloy sheet for use, also can select dish-shaped thrermostatic bimetal-plate or memorial alloy sheet (24) for use, when selecting dish-shaped thermal sensitive piece (24) for use, settle a pusher (22) of in chute (25), sliding in the central vertical of thermal sensitive piece (24), pusher (22) has with its front end folding or can catch on stopping of movable contact (16) with one and collude (29) or have an energy intercalation to go into the elastic sheet metal (23) that stops mouthful of movable contact (16) upper stop piece and touch mutually, and the annexation of elastic sheet metal (23) and movable contact (16) can adopt the annexation of strip thermal sensitive piece (17) and movable contact (16).Autocontrol switch of the present utility model mechanism also can directly adopt KSD series manual replacement type Kick type temperature controller (28), this temperature controller (28) has hand-reset push rod (26), temperature-sensitive face (27) fixed in position of this temperature controller (28) is on the heat transfer sheet (13) in the temperature control chamber (21) that has little admission opening (20), and two contacts of this temperature controller (28) are connected with electric heating tube with power supply respectively.The utility model also can be placed in the pot lid (2) of hot-water bottle (1), it is to be formed by connecting by can be used as upper casing (33) and go to the bottom (34) that pot lid uses, go to the bottom and settling electric heating tube (11) on (34), certainly, electric heating tube (11) also can be installed on the kettle body (10) of hot-water bottle, control the keying of the electric heating tube (11) on the kettle body (10) that is installed in hot-water bottle by the boiling water autocontrol switch in the pot lid (2), be installed with by the push rod (8) that passes outside the upper casing (33) in the chamber (30) by the upper casing (33) and (34) formation of going to the bottom, sound contact (15) (16) and the switching mechanism that produces thermal sensitive piece (17) composition of distortion when high temperature, thermal sensitive piece (17) fixed in position is penetrating and is being fixed on the heat transfer sheet (13) on the top, temperature control chamber (21) on go to the bottom (34).Going to the bottom has on (34) 2 to vary in size thereby venthole (20), (4) that resistance is different, water vapour before the boiling water is all overflowed from the minimum big venthole (4) of resistance, only when water boils back generation air pressure, little venthole (20) just is able to dividing potential drop by part steam, makes the thermal sensitive piece of being made by thrermostatic bimetal-plate or memorial alloy sheet (17) that is in originally under the normality produce flexural deformation.A pair of dynamic and static contact (15) (16) is arranged in the upper casing (33), movable contact (16) by stretch out upper casing (33) outer push push rod (8) face contact stationary contact (15), also stopped and keep in touch state simultaneously, and continue to heat by thermal sensitive piece (17).Behind the boiling water, thermal sensitive piece (17) temperature distortion is freed movable contact (16), and movable contact (16) is set back by elasticity itself, breaks away from stationary contact (15) and cuts off the power supply.The binding post (31) of electric heating tube (11) is connected in the power line with the movable contact (16) and the stationary contact (15) that are installed on the contact shoe (35).When pressing was pushed push rod (8), the middle part of promotion movable contact (16) makes and stationary contact (15) joins, and the press points below, middle part of movable contact (16) is that catch is blocked by thermal sensitive piece (17) by a jut directly or indirectly, can not withdraw from the heating beginning.Water vapour when water nearly seethes with excitement in the kettle is overflowed by big venthole (4) because of the difference of venthole resistance, and water vapour produces pressure after the water boiling, and the water vapour after the dividing potential drop is able to by cross-sectional area less than 6mm ²Little air intake (20) enter temperature control chamber (21) and overflow along little steam outlet pipe (18).Airtight the sealing of heat transfer sheet (13) that temperature control chamber (21) is made by copper, aluminum, sealing can be adopted modes such as tight fit or bonding, purpose is to stop steam to enter chamber (30), heat transfer sheet (13) adopts modes such as pressing plate pressing or seam to make it tight and contacts with thermal sensitive piece (17), also available thermal sensitive piece (17) directly seals temperature control chamber (21) as heat transfer sheet (13), thermal sensitive piece (17) almost is subjected to be in less than heat the normality of shape invariance in the boiling water cause.The steam temperature that enters behind the boiling water is heated and flexural deformation downwards it rapidly, makes movable contact (16) be freed the back and returns outage by self elasticity.Upper casing (33) combines pot lid (2) use of back as hot-water bottle with go to the bottom (34), it can do various decoratings, in order to beautifying indoor environment.

Fig. 8～Figure 11 represents the installation method of thermal sensitive piece (17) and heat transfer sheet (13), with heat transfer sheet (13) pressure injection in vinyl cover (36), again thermal sensitive piece (17) closely is connected with heat transfer sheet (13), vinyl cover (36) needs to combine closely with temperature control chamber (21) and does not leak vapour, and thermal sensitive piece (17) and heat transfer sheet (13) can also be made vertical connection and use.Also can with thermal sensitive piece (17) on demand form directly be injected in the vinyl cover (36) and directly be subjected to temperature, and heat transfer sheet (13) is replaced.

The structural representation of Figure 18 for pushing from movable contact (16) far-end pushed push rod (8) and made stopping of movable contact (16) distortion back insertion thermal sensitive piece (17) collude (32), and thermal sensitive piece (17) is heated, and the contact breaks away from when moving downward.

Figure 12～Figure 17 is several hook joint modes of movable contact (16) and thermal sensitive piece (17).A hole or opening (38) are arranged on the thermal sensitive piece among Figure 12 and Figure 13 (17), the outstanding catch (37) of movable contact (16) is blocked; Figure 14 and Figure 15 have a long narrow catch (37) at movable contact (16) far-end, can enter the hole or the opening (38) of thermal sensitive piece (17) and are lockable; Figure 16 and Figure 17 push under the mode at movable contact (16) far-end, thermal sensitive piece (17) and movable contact (16) vertical direction adopt in movable contact (16) distal side to go out a catch (37) and insert the method that hole on the thermal sensitive piece (17) or opening (38) are lockable not simultaneously.

The utility model volume is little, and is simple and compact for structure, installs firmly, guarantees to cut off the power supply behind the boiling water, and no longer resets, and convenient attractive in appearance, safe and reliable, it is big that temperature sensing material adapts to range of choice, and for example the kick temperature spot of thermal sensitive piece can be selected in 60～95 ℃ of scopes.

Claims

1, hot-water bottle automatic control electric heater unit, it is to be connected and composed by electric heating tube and autocontrol switch mechanism, it is characterized in that autocontrol switch mechanism produces distortion by push rod, sound contact and when the high temperature thermal sensitive piece forms, the thermal sensitive piece fixed in position is on the heat transfer sheet that has on the temperature control chamber of little admission opening, and movable contact or stationary contact are connected with electric heating tube.

2, hot-water bottle automatic control electric heater unit according to claim 1, the sidewall that it is characterized in that having the temperature control chamber of little admission opening is communicated with a steam outlet pipe.

3, hot-water bottle automatic control electric heater unit according to claim 2, the front end folding that it is characterized in that thermal sensitive piece have or can catch on stopping of movable contact with one and collude or have the mouth that stops that catch on the movable contact is gone in an energy intercalation.

4,, it is characterized in that described thermal sensitive piece is strip thrermostatic bimetal-plate or memorial alloy sheet according to claim 1 or 2 or 3 described hot-water bottle automatic control electric heater units.

5, hot-water bottle automatic control electric heater unit according to claim 1 and 2, it is characterized in that described thermal sensitive piece is dish-shaped thrermostatic bimetal-plate or memorial alloy sheet, settle a pusher in the central vertical of thermal sensitive piece, pusher has with its front end folding or can catch on stopping of movable contact with one and collude or have the elastic sheet metal that stops mouth that an energy intercalation goes into the movable contact upper stop piece and touch mutually.

6,, it is characterized in that the little admission opening on the described temperature control chamber connects a steam inducing tube according to claim 1 or 2 or 3 described hot-water bottle automatic control electric heater units.

7, hot-water bottle automatic control electric heater unit according to claim 4 is characterized in that the little admission opening on the described temperature control chamber connects a steam inducing tube.

8, hot-water bottle automatic control electric heater unit according to claim 5 is characterized in that the little admission opening on the described temperature control chamber connects a steam inducing tube.

9, hot-water bottle automatic control electric heater unit according to claim 1 and 2, it is characterized in that autocontrol switch mechanism is the manual replacement type Kick type temperature controller, the temperature-sensitive face fixed in position of temperature controller is having on the temperature control chamber of little admission opening, and the contact of temperature controller is connected with electric heating tube.

10, hot-water bottle automatic control electric heater unit according to claim 9 is characterized in that the little admission opening on the described temperature control chamber connects a steam inducing tube.