CN1600939A - Control equipment of heater in washing machine - Google Patents
Control equipment of heater in washing machine Download PDFInfo
- Publication number
- CN1600939A CN1600939A CN 03144385 CN03144385A CN1600939A CN 1600939 A CN1600939 A CN 1600939A CN 03144385 CN03144385 CN 03144385 CN 03144385 A CN03144385 A CN 03144385A CN 1600939 A CN1600939 A CN 1600939A
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- heater
- washing machine
- safety device
- control device
- temperature
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- Control Of Washing Machine And Dryer (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
A control device of heater on washer consists of the first safety device set in drying duct for switching off heater power at time when heater temp is rised up the first set temp, and the second safety device for switching off heater power at time when the first device is fault and heater temp is over the first set temp up to the second set temp.
Description
Technical field
The present invention relates to a kind of inside is provided with and can provides hot blast to wash the washing machine of the heater of back clothing with drying to cylinder inside, particularly relate to a kind of can when discharging hot blast, cutting off the electricity supply, thereby prevent the heater control device of the washing machine of security incident with the overheated heater of dry washing material.
Background technology
In general, washing machine be a kind ofly utilize that mechanical force and an amount of washing agent will be placed in that the clothing that has spot in the wash bucket washs, rinsing, dehydration and drying, thereby remove the device of spot on the washings.Fig. 1 is the roller washing machine side direction structure cutaway view of prior art.As shown in Figure 1, the roller washing machine of this prior art comprises: be formed on the inboard of casing 2, and can be by the outer bucket 10 of spring 4 and damper 5 supports; Be arranged on the inboard of outer bucket 10, can place the cylinder 11 of washings; Connect for the front end that opens and closes cylinder 11 and be fixed on door 13 on the casing 2; Be arranged between the front and casing 2 of outer bucket 10, when closing door 13, can play sealing function,, and when cylinder 11 rotates, can play the sealing ring 12 of damping and cushioning effect in case laundry water outwards flows out; One side is connected the bottom, side of outer bucket 10, thereby can discharge the discharge line 20 of outer bucket 10 inner humid airs; Be connected with discharge line 20, and in order to discharge hot blast and the inner drying duct 30 that is provided with heater 31 and blowing fan to inside.Wherein, also be provided with the heater control device that can prevent that heater 31 is overheated in the drying duct 30.Fig. 2 is the heater control device circuit theory schematic diagram of the washing machine of prior art.As shown in Figure 2, symbol Ho, the Co among the figure, So, Po represent heater, microcomputer, thermal switch and power supply respectively.Wherein, heater H o is connected with power supply, and the temperature of coming control heater Ho by coupled microcomputer Co, so that heater H o moves below safe temperature.And be provided with the heater control device that can when microcomputer Co maloperation, can prevent overheated heater among the heater H o.Heater control device is to offer the temperature that the power source method of circuit comes control heater with ON/OFF.Heater control device is connected in the circuit of heater H o.This heater control device is pasted the thermal switch So that forms by the two metal sheets with different heat expansion coefficient usually and is constituted.The operation principle of this thermal switch So is that sheet metal bends towards the little side of thermal coefficient of expansion when overheated, opens circuit thereby circuit is produced.But the heater control device of this prior art washing machine opens circuit thereby circuit can't be produced in the rapid problem that occurs microcomputer and thermal switch fusing when overheated easily, thereby also with regard to the temperature of uncontrollable drying duct.Simultaneously, washings can produce damage owing to being subjected to high temperature, even washing machine can occur and cause security incidents such as fire.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of at No. 1 safety device that constitutes by thermal switch because overheated and can't carry out operate as normal the time, utilization can be cut off No. 2 safety devices that the power supply of electric energy is provided to heater, thereby when overheated heater, can cut off the electricity supply, in order to avoid washings sustains damage, thereby can prevent the heater control device of the washing machine of security incident.
In order to achieve the above object, the heater control device of washing machine provided by the invention comprises: be arranged on inside and heater be housed and can discharge in the drying duct of hot blast the 1st safety device of cut-out heater power source in the time of can rising to the 1st design temperature in the temperature of heater; With can work as that the 1st safety device breaks down and the temperature of heater is cut off the 2nd safety device of heater power source when rising to the 2nd design temperature that is higher than the 1st design temperature.
The heater control device of washing machine provided by the invention is when the 1st safety device cisco unity malfunction and overheated heater, use the 2nd safety device to cut off the power supply that offers heater, thereby can prevent that washings from sustaining damage, and can prevent the security incident that causes owing to overheated.In addition, the two ends of the 2nd safety device are provided with splicing ear, thereby are convenient to install and change.
Description of drawings
Be elaborated below in conjunction with the heater control device of the drawings and specific embodiments to washing machine of the present invention.
Fig. 1 is the roller washing machine side direction structure cutaway view of prior art.
Fig. 2 is the heater control device circuit theory schematic diagram of the washing machine of prior art.
Fig. 3 is a roller washing machine side direction structure cutaway view of the present invention.
Fig. 4 is the heater control device circuit theory schematic diagram of washing machine of the present invention.
Fig. 5 is washing machine drying duct of the present invention and heater control device exploded perspective view.
Fig. 6 is the heater control device significant points amplification view of washing machine of the present invention.
The specific embodiment
As shown in Figure 3, in roller washing machine provided by the invention, the casing 52 inboard levels of front opening are provided with the outer bucket 60 that is supported by spring 54 and damper 55.And, the inboard of outer bucket 60 be provided with can rotate and its in can put into the cylinder 61 of waiting to wash clothing.The inside of cylinder 61 is formed with and a plurality ofly washings can be promoted to the lowering or hoisting gear 65 that certain altitude puts down again.The downside of outer bucket 60 is provided with can be according to the motor 67 of the forward and reverse rotation of power supply that applies.The rotating shaft 67a of motor 67 and cylinder 61 is respectively equipped with belt pulley on the 61a, and links to each other with belt 68, thereby can send forward and reverse rotation of motor 67 to cylinder 61.The downside of outer bucket 60 is connected with and the laundry water in the outer bucket 60 can be discharged to outside scupper hose 69a.And, also be connected with draining pump 69 on the scupper hose 69a.In addition, the upside of casing 52 is provided with control panel 57.On casing 52, be provided with door 63 for the front end that opens and closes cylinder 61.Be provided with between the front end of outer bucket 60 and the casing 52 when closing door 63 and can play sealing function,, when cylinder 61 rotates, have the sealing ring 62 of damping and buffering effect simultaneously in case laundry water outwards flows out.And a side lower part of outer bucket 60 is connected with the humid air that can suck outer bucket 60 inside, and makes the discharge line 70 of discharging after the condensate moisture.In addition,, a upper lateral part of outer bucket 60 has heater for heating air 81 but being provided with inside, and the drying duct 80 that is connected with discharge line 70.That is, drying duct 80 has can heat inhaled air, then with the functions of hot blast to cylinder 61 inner discharges.In addition, a side of drying duct 80 also is provided with the heater control device that can make the mobile blowing fan 75 smoothly of air and can prevent overheated heater.As shown in Figure 4, in the heater control device of washing machine provided by the invention, symbol Hx, Cx, S1, S2, Px represent heater, microcomputer, the 1st safety device, the 2nd safety device and power supply respectively.Wherein, heater H x links to each other with power supply Px, and the temperature of coming control heater Hx by coupled microcomputer Cx, so that heater H x moves below safe temperature.Be provided with the heater control device that when microcomputer Cx maloperation, can prevent overheated heater among the heater H x.Heater control device is made of the 1st safety device S1 and the 2nd safety device S2.When overheated heater, the power supply that provides to the loop can be provided heater control device.The 1st safety device S1 is connected in series on the loop of heater H x, and uses the ON/OFF mode for the temperature maintenance that makes heater H x below the 1st design temperature and control applying of power supply.The 1st safety device S1 pastes the thermal switch that forms by the two metal sheets with different heat expansion coefficient usually and constitutes.The operation principle of the 1st safety device S1 is when overheated, and sheet metal bends towards the little side of thermal coefficient of expansion, opens circuit thereby the loop is produced.In addition, when thermal switch owing to overheated when being attached on the loop, in case the temperature of heater H x rises to the 2nd design temperature that is higher than the 1st design temperature, the 2nd safety device S2 then can cut off the power supply that offers heater H x.Here, the 2nd design temperature is than the 1st design temperature height.For example, the 1st design temperature is set at 150 ℃, and then the 2nd design temperature is set at 240 ℃.As Fig. 5 and shown in Figure 6, in washing machine provided by the invention, drying duct 80 is formed with the pipeline connecting hole 83 that can link to each other with discharge line 70 by an end, and the other end is formed with the lower pipeline 82 of the pipe outlet portion 84 that can be connected with casing 52 and upper pipe 87 formations that can cover lower pipeline 82 tops.The lower edge of upper pipe 87 is formed with the upper rib 86 which is provided with a plurality of screw 86a.And the upper end-face edge of lower pipeline 82 also is formed with and upper rib 86 corresponding bottom flanks 85.And, also be provided with on the bottom flank 85 can with the corresponding screw 85a of screw 86a, so just can upper pipe 87 and lower pipeline 82 be fixed with each other with screw.Heater 81 is for being controlled the electronic heater of temperature by the microcomputer in the control part.Be formed with semi-circular groove 76a respectively on upper pipe 87 and the lower pipeline 82,77a, 76b, 77b.When upper pipe 87 and lower pipeline 82 combine, semi-circular groove 76a, 77a, 76b, 77b will form heater patchhole 76,77.Therefore, elder generation is inserted in heater 81 and carries out line in the heater patchhole 76,77 again.The drying duct 80 that possesses as above structure can occur under the overheated situation of heater 81 that washings sustains damage or the danger of fire, so in order to cut off the electricity supply when the overheated heater and be provided with the 1st not shown safety device and the 2nd safety device 90 that is in series with heater and power supply.Wherein, the 1st safety device is to be made of thermal switch.The 2nd safety device 90 is by the 1st distribution 92 that can link to each other with heater 81; Be connected with the 1st distribution 92, and the fuse 91 that can under the 2nd design temperature, fuse; Be connected with fuse 91, and the 2nd distribution 94 that can link to each other with power supply; With can encase the 1st, 2 distribution 92,94 and fuse 91, thereby the insulation tube 96 of its insulation is constituted.In order to prevent owing to the heater 81 overheated washings damaged that cause or fire to occur, fuse 91 produces fusing during fixed temperature by reaching material constitutes.Therefore, fuse 91 has and can cut off the effect that power circuit is provided to heater 81 when overheated.In the present invention, insulation tube 96 is made by nonconducting silicon.In addition, the end of the 2nd safety device 90 is respectively equipped with the splicing ear 98 that can link to each other with power supply with heater.After each fuse 91 fusing, change new fuse and just can continue to use the 2nd safety device 90.The washing machine course of work with as above structure is as follows: at first open the door 63 that is arranged on casing 52 fronts and drop into washings to the inside of cylinder 61.Then, 63 wash to the doorstep the pass.After washing finished, the washings that start after the draining pump 69 that is arranged on the scupper hose 69a will be washed were discharged to the outside by scupper hose 69a.Then, with clear water rinsing washings, and high speed swing roller 61 so that the moisture that contains in the washings deviate from from washings by means of centrifugal force.Then, in the time of low speed rotation cylinder 61, rotate blowing fan 75 and also add hot heater 81, provide hot blast with the inside of outside bucket 60.Heating-up temperature by microcomputer comes control heater 81 has the hot blast that does not damage the clothing temperature to send.When because when microcomputer failure and other reasons and temperature that can not control heater 81, thermal switch can be cut off the electricity supply because of expanded by heating.In addition, be attached under the situation on the distribution owing to the rapid overheated thermal switch that makes, the fusing of will being heated of the fuse 91 on the 2nd safety device S2, thus can cut off the power supply that offers heater 81.
Claims (4)
1, a kind of heater control device of washing machine, it is characterized in that: the heater control device of described washing machine comprises: be arranged on inside and heater (81) be housed and can discharge in the drying duct (80) of hot blast the 1st safety device of cut-out heater power source in the time of can rising to the 1st design temperature in the temperature of heater (81); With can work as that the 1st safety device breaks down and the temperature of heater (81) is cut off the 2nd safety device (90) of heater (81) power supply when rising to the 2nd design temperature that is higher than the 1st design temperature.
2, the heater control device of washing machine according to claim 1 is characterized in that: described the 2nd safety device (90) is to be connected in series with heater (81).
3, the heater control device of washing machine according to claim 1 and 2 is characterized in that: described the 2nd safety device (90) is by the 1st distribution (92) that can link to each other with heater (81); Be connected with the 1st distribution (92), and the fuse (91) that can under the 2nd design temperature, fuse; Be connected with fuse (91), and the 2nd distribution (94) that can link to each other with power supply; With can encase the 1st, 2 distribution (92,94) and fuse (91), thereby the insulation tube (96) of its insulation is constituted.
4, the heater control device of washing machine according to claim 3 is characterized in that: the end of described the 2nd safety device (90) is provided with the splicing ear (98) of being convenient to change and linking to each other with power supply with heater (81) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03144385 CN1600939A (en) | 2003-09-27 | 2003-09-27 | Control equipment of heater in washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03144385 CN1600939A (en) | 2003-09-27 | 2003-09-27 | Control equipment of heater in washing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1600939A true CN1600939A (en) | 2005-03-30 |
Family
ID=34659542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03144385 Pending CN1600939A (en) | 2003-09-27 | 2003-09-27 | Control equipment of heater in washing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1600939A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110184782A (en) * | 2018-02-23 | 2019-08-30 | Lg电子株式会社 | Washing machine |
| CN110184793A (en) * | 2018-02-23 | 2019-08-30 | Lg电子株式会社 | Washing machine |
| CN111424390A (en) * | 2019-01-10 | 2020-07-17 | Lg电子株式会社 | Washing device with induction heater |
-
2003
- 2003-09-27 CN CN 03144385 patent/CN1600939A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110184782A (en) * | 2018-02-23 | 2019-08-30 | Lg电子株式会社 | Washing machine |
| CN110184793A (en) * | 2018-02-23 | 2019-08-30 | Lg电子株式会社 | Washing machine |
| CN110184782B (en) * | 2018-02-23 | 2021-09-03 | Lg电子株式会社 | Washing machine |
| US11124911B2 (en) | 2018-02-23 | 2021-09-21 | Lg Electronics Inc. | Washing machine and control method of washing machine |
| US11131049B2 (en) | 2018-02-23 | 2021-09-28 | Lg Electronics Inc. | Washing machine and control method of washing machine |
| CN113638190A (en) * | 2018-02-23 | 2021-11-12 | Lg电子株式会社 | Washing machine |
| CN110184793B (en) * | 2018-02-23 | 2021-12-03 | Lg电子株式会社 | Washing machine |
| CN113638190B (en) * | 2018-02-23 | 2024-04-05 | Lg电子株式会社 | Washing machine |
| CN111424390A (en) * | 2019-01-10 | 2020-07-17 | Lg电子株式会社 | Washing device with induction heater |
| CN111424390B (en) * | 2019-01-10 | 2022-10-18 | Lg电子株式会社 | Washing device with induction heater |
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