CN100532996C - Thermal sensing controller and corresponding electric water heater - Google Patents
Thermal sensing controller and corresponding electric water heater Download PDFInfo
- Publication number
- CN100532996C CN100532996C CNB2007101075518A CN200710107551A CN100532996C CN 100532996 C CN100532996 C CN 100532996C CN B2007101075518 A CNB2007101075518 A CN B2007101075518A CN 200710107551 A CN200710107551 A CN 200710107551A CN 100532996 C CN100532996 C CN 100532996C
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- Prior art keywords
- connecting sheet
- electric connecting
- thermal sensing
- sensing controller
- shell fragment
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0202—Switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/002—Thermally-actuated switches combined with protective means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/78—Heating arrangements specially adapted for immersion heating
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- Thermally Actuated Switches (AREA)
Abstract
This invention discloses a sort of the thermal induced controller which is applied in the electric water heater, it has the shell and the cover fitted in the shell in this invention. The thermal induced controller consists of the thermal induced vapor on-off, the overheat protector and the fuse safety device, the electro-connector connects with the power supplied passageway of the shell in series, the overheat protector and the fuse safety device in the invention have two absolute on-off crunodes. Because the absolute independence of the relevant contactor of the overheat protector and the fuse safety device, it ensure that the contactor can separate reliably when the fuse safety device work. Because it fitted the bayonet lock set in the overheat protector, it avoid the repetitive dry combustion of the electric water heater.
Description
Technical field
The present invention relates to a kind of thermal sensing controller, particularly a kind of thermal sensing controller that is applied to electric heater.
Background technology
Electric heater needs an energising and the outage that controller comes control apparatus as electric heaters such as insulating pots especially, thus the control fluid temperature.In actual applications, the thermal sensing controller of frame for movement is the most frequently used, the simplest a kind of control system of controlling electric break-make.Generally this thermal sensing controller is to be installed to electric heater, so that obtain better thermo-contact.This thermal sensing controller is the set of several functions normally, and the Kick type overheat protector that steam formula thermal sensing switch, recoverable bimetallic material make and the safety fuse of plastics (or metal) are generally arranged.For the electric heater of using the immersion electric heater generally will be the side that electric heater and thermal sensing controller are installed in heating vessel.Generally electric heater and thermal sensing controller are installed in the bottom of heating vessel for the electric heater that one side is placed water.
For electric heater and thermal sensing controller are installed on the electric heater, there is a basic scheme to be suggested and is applied, thermal sensing steam switch and recoverable thermal sensing overheat protector are incorporated into together.And described controller is installed in the end face of immersion electric heater, utilize the steam switch to carry out basic heating power on/off overtemperature protection bimetal leaf.This kind controller is described in BP GB2170956A and GB22044451.But described patent documentation does not propose safety fuse.There were a lot of technical schemes that above basic technical scheme is improved afterwards again, and proposed safety fuse is added wherein, may cause dangerous problem after overtemperature protection system lost efficacy to solve.
The shortcoming of existing thermal sensing controller is that the optimum position that the order of overtemperature protection system action and recoverable overtemperature protection system carry out thermal sensing is not had proposition as safe as a house.One group of electrical contact that generally will rely on thermal sensing steam switch to move is separately positioned on two electrodes of power supply with the one group of electrical contact that relies on recoverable overtemperature protection system to move.There is the technical scheme that has added safety fuse generally the position of safety fuse action to be arranged on any a group of above-mentioned two groups of contacts.Do not consider that the electrical contact that is used for recoverable overtemperature protection system or thermal sensing steam switch contact sintering situation together occurs after through break-make repeatedly sometimes.So just power supply can not cut off from here.Even and the safety fuse of this moment moves, the electrical contact that can not guarantee to connect separates.Fuse protecting device at this time just can not play insurance function to the end.
So the consumer is more and more higher for the requirement of security appliance, above technical scheme also is not enough to provide reliable safety guarantee.
Summary of the invention
The objective of the invention is to overcome prior art scheme deficiency in actual applications; a kind of more perfect, more reliable temperature controller is provided; to solve the power-off protection of electric heater under abnormal conditions; and make the overtemperature protection measure that a reasonably reaction can be arranged, avoided the unusual heating of the repetition of electric heater.
The invention provides a kind of thermal sensing controller that is applied in the electric heater; have housing and be installed on lid on the described housing; described thermal sensing controller comprises thermal sensing steam switch; overheat protector; safety fuse; be connected in the supply access in the described housing with electric connecting sheet; described overheat protector and safety fuse respectively are provided with a switch node; wherein these two switch nodes are separate; described overheat protector is installed in the described housing; comprise bimetallic actuator; be arranged in second barred body of described lid; the second movable electric connecting sheet; cross bridge-type electric connecting sheet and power plug; wherein said second barred body, one side contacts with described bimetallic actuator; opposite side contacts with the second movable electric connecting sheet; the described bridge-type electric connecting sheet of crossing is electrically connected with described power plug; be arranged on second moving contact and a described switch node that is arranged in described second static contact formation supply access of crossing on the bridge-type electric connecting sheet on the described second movable electric connecting sheet; the movable end of the described second movable electric connecting sheet can be touched with elasticity bayonet lock device one-tenth and be connected; described elasticity bayonet lock device is one second shell fragment; one side of described second shell fragment is provided with the flanging of a perk certain angle; described flanging can separate the back card at described second moving contact and end the described second movable electric connecting sheet with second static contact, the described second shell fragment end can be touched with a manual reset mechanism one-tenth by a shake-up bending edges and be connected.
Overheat protector can not recover behind an abnormal operation automatically like this, has avoided the unusual heating of the repetition of electric heater.
Described two switch nodes connect with a gap bridge electric connecting sheet, and the two ends of described gap bridge electric connecting sheet are respectively equipped with an electrical contact.Like this, safety fuse has own one group of independent electrical contact.As last channel temp safeties, even the electrical contact of overheat protector occurs being used for because frequent break-make and bonding together also can guarantee to disconnect supply access after the safety fuse action.
Described be installed in the gap bridge electric connecting sheet on the relative electrical contact of electrical contact and the action component of each temperature control equipment be one to one, described every group of electrical contact only is subjected to the control of the action component of an above-mentioned temperature control equipment in several.
There are certain priority action relationships in described thermal sensing steam switch, overtemperature protection system, safety fuse.When described electric heater is under the normal operational circumstances, after being heated to boiling, liquid has only the switch motion of described thermal sensing steam, open its corresponding electrical contact, interrupt power is supplied with.This is the behaviour in service of normal electric heater.Confirm in the test that the switch motion of described thermal sensing steam can be carried out the break-make more than 10000 times, can satisfy the requirement in service life of normal client.
Do not add in occurring because of electric heater after liquid or other unpredictable reason cause that the action of described thermal sensing steam switch was lost efficacy, its corresponding electrical contact is opened in described overtemperature protection system action, and interrupt power is supplied with.Will move experience the unusual heating of electric heater when bimetallic actuator after, push second moving contact and second static contact of contact, interruption of power supply path open by second barred body.
Described manual reset mechanism comprises a release link and a diagonal bar of fixedlying connected with it, and described release link becomes can touch with the shake-up bending edges of described shell fragment by described diagonal bar on a settling position and is connected, and makes on the flanging of described shell fragment to carry.Promptly after an end of manual reset mechanism is depressed, an end and the described shake-up bending edges of described manual reset mechanism are interferences.The described shake-up bending edges that an end of response agency will be interfered after manually response agency being stirred is stirred like this, discharges jammed electric connecting sheet.Overheat protector recovers the normal power supply state.
Described safety fuse comprises first barred body, the first movable brace that is installed in the described housing, the described first movable electric connecting sheet and cross the bridge-type electric connecting sheet and form another described switch node in the supply access by setting up first moving contact on it and first static contact separately, described first static contact is positioned at the relative side of described second static contact, described first barred body, one end contacts with the described first movable electric connecting sheet, the other end is arranged in outside the described housing, and can touch with an elastic switch and to be connected.
Described elastic switch comprises one first shell fragment and a rivet of being made by low melting material, and described rivet is fixed in shell fragment on the described housing.
The present invention also provides a kind of electric heater, comprises the main body that has electric circuit, includes aforesaid thermal sensing controller in the main body of described electric circuit.
Because adopt above-mentioned technical scheme, the present invention has following beneficial effect:
1. owing to described safety fuse, described thermal sensing steam switch, described overtemperature protection system have independently electrical contact, guarantee safety fuse electrical contact energy reliable separation when moving, played insurance function to the end.
2. because elasticity bayonet lock device is set, avoided the repetition dry combustion method of electric heater in overtemperature protection system.
Description of drawings
Fig. 1 is the three-dimensional structure diagram of thermal sensing controller of the present invention;
Fig. 2 is the floor plan of thermal sensing controller internal electric contact of the present invention;
Fig. 3 be the B-B of Fig. 2 to cutaway view, be the overheat protector of thermal sensing controller of the present invention section layout drawing before not moving;
Fig. 4 be the B-B of Fig. 2 to cutaway view, be the section layout drawing after the overheat protector action of thermal sensing controller of the present invention;
Fig. 5 be the A-A of Fig. 2 to cutaway view, be the overheat protector of thermal sensing controller of the present invention section layout drawing after being resetted by manual reset mechanism;
Fig. 6 is the second shell fragment parts amplification stereogram
Fig. 7 be the B-B of Fig. 2 to cutaway view, be the section layout drawing after the safety fuse action of thermal sensing controller of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention further is illustrated.
As shown in Figure 1, be the three-dimensional structure diagram of thermal sensing controller of the present invention.As can be seen from the figure, thermal sensing controller 1 comprises a housing 5, lid 4, bimetallic actuator that was used for thermoinduction 3, fixed cover 8, release link 6 and three latches 71,72,73 (wherein 72 is earthy latches) that connect power supplys.The hole 101,102 that two admittance electric heater eduction rods are wherein arranged on the lid 4.Bimetallic actuator 3 is fixed on the lid 4 by the fixed cover 8 of the annular of a hollow, and this moment, bimetallic actuator 3 had certain retraction space.Fixed cover 8 is fixed on the lid by two screws 91,92.The fixed cover 8 of the annular of hollow has a cantilever arm 81 outside a side direction.One of riding on the lid 4 of cantilever arm 81 stretches out on the platform 41, form one below unsettled bridge.One first shell fragment 18 is set below cantilever arm 81.The movable end of first shell fragment 18 and cantilever arm 81 are fixed at the rivet made from low melting material near the position of stretching out platform 41 2.The rivet made from low melting material 2 is configured to electric heater good thermo-contact is arranged when mounted.First shell fragment 18 of this moment is configured to be in the power state that holds.The direction of power is to make first shell fragment 18 break away from the direction of cantilever arm 81 to lid 4.
As shown in Figure 2, be the front view of thermal sensing controller of the present invention, wherein parts lid and the parts that are installed on the lid are hidden, to see the distribution of internal part.One end of gap bridge electric connecting sheet 13 and one have certain flexible first mobilizable electric connecting sheet 16 to link together by first static contact 143, first moving contact 144.Form a switch node in the supply access.The stiff end of the first movable electric connecting sheet 16 and latch 71 link together, to form a current electrode in the supply access.Contact an end of one first barred body 17 at the movable end of first mobilizable electric connecting sheet 16.On another has the free end of certain flexible second movable electric connecting sheet 12, one second moving contact 142 is set.One second static contact 141 is arranged on the end of gap bridge electric connecting sheet 13.Another switch node that the second movable electric connecting sheet 12 and gap bridge electric connecting sheet 13 form in the supply accesses by second static contact 141, second moving contact 142.The other end of the second movable electric connecting sheet 12 is arranged on the hole 101 times, links together with an eduction rod of electric heater.Another eduction rod of electric heater and the not end of the latch 73 under another hole 102 link together, and (centre has one to open and node, it is the node that is used to respond to thermal sensing steam switch, herein not within the scope of the present invention, understand so do known solution, think that it links together).Like this under the situation of two latches, 71,73 energisings, because second static contact 141, second moving contact 142 and first static contact 143, first moving contact 144 are all connected at this moment.Supply access closure like this, power supply is powered to electric heater.Free end at second mobilizable electric connecting sheet 12 is provided with one second shell fragment 15.The free end of second shell fragment 15 is provided with in the hole 51 on the housing 5.
As shown in Figure 3, for the B-B of Fig. 2 to cutaway view, be the overheat protector of thermal sensing controller of the present invention section layout drawing before not moving.Bimetallic actuator 3 is in arm-to-arm, and its radian is that drum is to electric heater.The center of bimetallic actuator 3 contacts an end of second barred body 11.The other end of second barred body 11 touches the movable end of certain flexible second movable electric connecting sheet 12.The same second moving contact 142 that on the free end of second mobilizable electric connecting sheet 12, is provided with as shown in Figure 2.Second static contact 141 is arranged on the end of a gap bridge electric connecting sheet 13.The switch node that the second movable electric connecting sheet 12 and gap bridge electric connecting sheet 13 form in the supply accesses by second moving contact 142 and second static contact 141.First static contact 143 is set on the other end of gap bridge electric connecting sheet 13.First moving contact 144 relative with first static contact 143 is arranged on the movable end of first mobilizable electric connecting sheet 16.Tip position at the movable end of first mobilizable electric connecting sheet 16 contacts with first barred body 17.The movable end in contact of the other end of first barred body 17 and first shell fragment 18.Because the rivet 2 that this moment, shell fragment was made by low melting material is fixing, can bullet under.First barred body 17 can not depressed yet.First static contact 143 and first moving contact 144 are connected, and situation about not depressing at first barred body 17 next is directly logical, do not have the break-make phenomenon.
As shown in Figure 4, for the B-B of Fig. 2 to cutaway view, be the section layout drawing after the overheat protector action of thermal sensing controller of the present invention.This moment, bimetallic actuator 3 moved because of the unusual heating of experiencing electric heater, and its radian is the direction of drum to second barred body 11, makes second barred body 11 to moving as the figure right direction.The other end of second barred body 11 makes the second movable electric connecting sheet 12 to moving as the figure right direction.Cause second moving contact 142 disposed thereon and second static contact 141 that is arranged on the gap bridge electric connecting sheet 13 to break away from, disconnect supply access.The power supply of electric heater is supplied with and is interrupted, and unusual heated condition stops.On second shell fragment 15, be provided with simultaneously the flanging 151 of a perk certain angle.Be pushed to the right direction as figure at the second movable electric connecting sheet 12, after breaking away from described gap bridge electric connecting sheet 13, described flanging 151 blocks the movable end of the second movable electric connecting sheet 12.Be located at a release link 6 in the eccentric stiffener and be in a settling position this moment.At this moment, even after electric heater descends because of heating stop temperature, bimetallic actuator 3 recovers, and the second movable electric connecting sheet 12 can not reset yet and gap bridge electric connecting sheet 13 is connected.Thereby avoided the unusual heating that repeats.At this moment, the rivet of making owing to low melting material 2 does not have because of overheated the fusing, and first shell fragment 18 still is in the power state that holds, and first static contact 143 and first moving contact 144 are in on-state.
As shown in Figure 5, for the A-A of Fig. 2 to cutaway view, be the overheat protector of thermal sensing controller of the present invention section layout drawing after being resetted by manual reset mechanism.Be the unusual heating that the consumer finds electric heater at this moment, take corresponding corrective measure and with 6 groups of release links to another settling position.Near second shell fragment 15 continuous position flanging 151 is provided with one and touches bending edges 152.Be located at a diagonal bar 61 on the release link 6 pass the hole 51 that is located on the housing 5 will touch bending edges 152 to as figure direction upwards stir certain distance.With touch 151 whiles of flanging that bending edges 152 links to each other certain distance that also is struck.Make the movable end of the jammed second movable electric connecting sheet 12 break away from flanging 151.The movable end of the second movable electric connecting sheet 12 contacts with second static contact 141 on being located at gap bridge electric connecting sheet 13 to move, make second moving contact 142 be located on the second movable electric connecting sheet 12 as the figure left direction under self flexible restoring force effect.Thereby the power supply that recovers electric heater is supplied with, the triggering state for the treatment of before returning to.The parts enlarged drawing of second shell fragment 15 as shown in Figure 6.
As shown in Figure 7, for the B-B of Fig. 2 to cutaway view, be the section layout drawing after the safety fuse action of thermal sensing controller of the present invention.When appearring in electric heater, thermal sensing steam switch and recoverable thermal sensing overtemperature protection system occur simultaneously losing efficacy; electric heater heats always; in this moment safety fuse with electric heater in electric heater rivet 2 fusings that the low melting material of good thermo-contact makes are arranged; make first shell fragment 18 break away from fixed covers 8, first shell fragment 18 that holds power with first barred body, 17 tops to as the figure right direction.Make first mobilizable electric connecting sheet 16 to moving as the figure right direction.Be located at first moving contact, the 144 same moved further on first mobilizable electric connecting sheet 16, separate with first static contact 143 on being located at gap bridge electric connecting sheet 13, interrupt power is supplied with.Because expendable destructive action appears in riveting point 55, the electrical contact of interruption is expendable.
Because safety fuse of the present invention, overheat protector have independently electrical contact, guaranteed that steam switch, overheat protector all lost efficacy after, but the safety fuse self contained function, electrical contact can reliable separation during action, plays insurance function to the end.
It should be noted that at last: above embodiment only in order to the explanation the present invention and and unrestricted technical scheme described in the invention; Therefore, although this specification has been described in detail the present invention with reference to each above-mentioned embodiment, but, those of ordinary skill in the art is to be understood that, still can make amendment or be equal to replacement the present invention, such as, with thermal sensing controller of the present invention separately from package assembly, be divided into two parts, link together with lead again between them.Seem that although it is so this thermal sensing controller is structurally different with the present invention, but be identical on technical essential and the effect that obtained with the present invention; Say that for another example the present invention is installed on the electric heater as an illustration with direct insertion thermal sensing controller and immersion electric heater from specification embodiment, applying it on the electric heater that rotary thermal sensing controller and conduction-type electric heater have been installed is to have identical result of use, does not break away from technical solutions according to the invention; And all do not break away from the technical scheme and the improvement thereof of the spirit and scope of the present invention, and it all should be encompassed in the claim scope of the present invention.
Claims (6)
1; a kind of thermal sensing controller that is applied in the electric heater; have housing and be installed on lid on the described housing; described thermal sensing controller comprises thermal sensing steam switch; overheat protector; safety fuse; be connected in the supply access in the described housing with electric connecting sheet; described overheat protector and safety fuse respectively are provided with a switch node; wherein these two switch nodes are separate; described overheat protector is installed in the described housing; comprise bimetallic actuator; be arranged in second barred body of described lid; the second movable electric connecting sheet; cross bridge-type electric connecting sheet and power plug; wherein said second barred body, one side contacts with described bimetallic actuator; opposite side contacts with the second movable electric connecting sheet; the described bridge-type electric connecting sheet of crossing is electrically connected with described power plug; be arranged on second moving contact and a described switch node that is arranged in described second static contact formation supply access of crossing on the bridge-type electric connecting sheet on the described second movable electric connecting sheet; the movable end of the described second movable electric connecting sheet can be touched with elasticity bayonet lock device one-tenth and be connected; it is characterized in that; described elasticity bayonet lock device is one second shell fragment; one side of described second shell fragment is provided with the flanging of a perk certain angle; described flanging can separate the back card at described second moving contact and end the described second movable electric connecting sheet with second static contact, the described second shell fragment end can be touched with a manual reset mechanism one-tenth by a shake-up bending edges and be connected.
2, thermal sensing controller as claimed in claim 1 is characterized in that, described two switch nodes connect with a gap bridge electric connecting sheet, and the two ends of described gap bridge electric connecting sheet are respectively equipped with a static contact.
3, thermal sensing controller as claimed in claim 1, it is characterized in that described manual reset mechanism comprises a release link and a diagonal bar of fixedlying connected with it, described release link shake-up bending edges by described diagonal bar and described second shell fragment on a settling position becomes can touch and is connected, and makes on the flanging of described second shell fragment to carry.
4, thermal sensing controller as claimed in claim 1, it is characterized in that described safety fuse comprises first barred body that is installed in the described housing, the first movable electric connecting sheet, be arranged on first moving contact on the described first movable electric connecting sheet and be arranged on described first static contact of crossing the bridge-type electric connecting sheet and form another described switch node in the supply access, described first static contact is positioned at the relative side of described second static contact, described first barred body, one end contacts with the described first movable electric connecting sheet, the other end is arranged in outside the described housing, and can touch with an elastic switch and to be connected.
5, thermal sensing controller as claimed in claim 4 is characterized in that described elastic switch comprises one first shell fragment and a rivet of being made by low melting material, and described rivet is fixed in first shell fragment on the described housing.
6, a kind of electric heater comprises the main body that has electric circuit, it is characterized in that: include the thermal sensing controller described in claim 1 in the main body of described electric circuit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101075518A CN100532996C (en) | 2007-05-21 | 2007-05-21 | Thermal sensing controller and corresponding electric water heater |
| PCT/CN2007/002364 WO2008141491A1 (en) | 2007-05-21 | 2007-08-07 | Thermal sensitive controller and corresponding electric immerse heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101075518A CN100532996C (en) | 2007-05-21 | 2007-05-21 | Thermal sensing controller and corresponding electric water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101082449A CN101082449A (en) | 2007-12-05 |
| CN100532996C true CN100532996C (en) | 2009-08-26 |
Family
ID=38912146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101075518A Active CN100532996C (en) | 2007-05-21 | 2007-05-21 | Thermal sensing controller and corresponding electric water heater |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100532996C (en) |
| WO (1) | WO2008141491A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9203230D0 (en) * | 1992-02-14 | 1992-04-01 | Strix Ltd | Immersion heaters |
| CN2504753Y (en) * | 2001-10-25 | 2002-08-07 | 邵志成 | Socket with improved temp induction control structure |
| CN1374490A (en) * | 2002-01-29 | 2002-10-16 | 刘鑫浩 | Temperature controller for electrical liquid heater |
-
2007
- 2007-05-21 CN CNB2007101075518A patent/CN100532996C/en active Active
- 2007-08-07 WO PCT/CN2007/002364 patent/WO2008141491A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN101082449A (en) | 2007-12-05 |
| WO2008141491A1 (en) | 2008-11-27 |
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