CN1426756A - Vacuum cleaner having electric motor protective device - Google Patents
Vacuum cleaner having electric motor protective device Download PDFInfo
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- CN1426756A CN1426756A CN 01144385 CN01144385A CN1426756A CN 1426756 A CN1426756 A CN 1426756A CN 01144385 CN01144385 CN 01144385 CN 01144385 A CN01144385 A CN 01144385A CN 1426756 A CN1426756 A CN 1426756A
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Abstract
A vacuum cleaner with motor protector is composed of a main body with upper and lower casings, a motor and its shell, a dust-collecting box, and a filter. It features that a pressure switch and an air throttle are installed on the top surface of motor shell. The lower pressure in motor shell can be sensed by the said pressure switch and thus the air throttle is opened for allowing external air to directly flow into it for protecting the motor.
Description
One, technical field
The present invention relates to a kind of dust catcher, relate in particular to a kind of vacuum cleaner of avoiding motor overload work with electric motor protective device.
Two, background technology
As shown in Figure 1, general vacuum cleaner comprises body (2); Connecting flexible pipe (4) is connected with body; Prolong pipe (6) and be connected flexible pipe (4) and be connected; Suction line (8) is arranged on the lower end of above-mentioned prolongation pipe.
Be provided with the drive motors that produces suction in the inside of above-mentioned body (2) and in order to filter the filter of aspirated foreign body air.In addition, above-mentioned connection flexible pipe (4) is to be made by pliable and tough material, is connected with prolongation pipe (6) with body (2).Prolong pipe (6) and have telescopic structure usually, the top of this prolongation pipe is provided with the handle portion that grips for the user.
The suction that body (2) produces is delivered to suction line (8) by connecting flexible pipe (4) and prolonging pipe (6).Just produce suction during the face of suction line (8) by contact need cleaning, for example, ground, room etc. will be contained the same foreign matter of dust and suck by suction line (8) with air.The air that contains foreign matter that is inhaled into filters by after prolonging pipe (6) and being connected flexible pipe (4) and flowing into body interior.
Under the state of the upper box body of opening body of dust collector (2), consult Fig. 2, the internal structure of body (2) is described.The inside of being located at the lower part box (21) of body (2) bottom is provided with control of dust space (22a), is provided with the dust bag the same with paper bag in the above-mentioned control of dust space (22a).This control of dust space (22a) is to distinguish by demarcation strip (26) to form.The opposite side of this demarcation strip (26) is provided with motor placement space (22b), in this motor placement space (22b) motor case (24) is set, and is provided with the motor that produces suction in the above-mentioned motor case (24).
Be provided with tube connector (25a) for the motor cover (25) that opens and closes motor case (24) top, this tube connector (25a) is connected with the motor placement space (22b) that is positioned at motor cover (25) below.In addition, be provided with the dust bag (not shown) in control of dust space (22a), the air that contains foreign matter by this dust bag is merely able to discharge air to the outside.The top in this control of dust space (22a) is provided with lid (28), on the lid (28) air throttle (28a) is installed.This air throttle (28a) has following structure: above-mentioned dust bag (22a) pressure inside is if force down than atmosphere, and this air throttle (28a) will be opened, and makes the body of dust collector air outside flow into the inside of dust bag (22a).Because the inner structure of air throttle (28a) is a located by prior art, no longer describe in detail.
Fig. 3 has disclosed the annexation of tube connector (25a) and demarcation strip (26).As shown in the figure, be located at that set intercommunicating pore (26a) is connected on tube connector (25a) and the demarcation strip on the motor cover (25).Be connected with in the end of tube connector (25a) can sensed pressure pressure switch (27).Can the above-mentioned control of dust of perception space (22a) pressure inside by the above-mentioned pressure switch (27) that intercommunicating pore (26a) is provided with.
The motor that drive motors casing (24) is inner, the suction that it produced is delivered to suction line (8), makes foreign matter such as the ground dust in room be drawn into the inside of body (2) by suction line (8).In addition, the air that contains foreign matter flow into the dust bag inside that is located at body interior control of dust space (22a), only discharge air in dust bag, and the foreign matter of dust etc. is stacked on dust bag inside gradually.
Air from discharge to the outside inside of dust bag behind the inside via motor case (24), is discharged to the outside of dust catcher.Inside via motor case (24) is in order to cool off the motor of heating at work.
As mentioned above, if the dust of dust bag inside piles a lot or suction line (8), any one inside in prolonging pipe (6) and being connected flexible pipe (4) by a lot of foreign matter obstructions, above-mentioned control of dust space (22a) pressure inside will diminish.That is to say that owing to flow into the inner little air in control of dust space (22a), the inner motor of this motor case (24) carries out the exhaust action constantly on the contrary, has therefore reduced control of dust space (22a) pressure inside.
In addition, if above-mentioned pressure reduces, in fact just equal the motor overload running that makes motor case (24) inner.That is to say, because pile with the foreign matter of dust etc. in control of dust space (22a) inner dust bag, under air flowed into abnormal state of affairs, motor was also discharged the air of control of dust interior volume in action, had in fact allowed the motor overload work that is arranged on motor case inside.And this excess load bring fatal influence can for the function of dust catcher, therefore should avoid making motor overload work as far as possible.
For the intercommunicating pore (26a) by demarcation strip (26) perceives the pressure switch (27) that control of dust space (22a) pressure inside is provided with, the pressure power of control of dust interior volume is carried out perception.In addition, on the sensed pressure basis of pressure switch (27), produce light or warning, tell the user that dust catcher is in abnormality.Therefore, the user can take to change the measure of dust bag etc.
But when if the user does not perceive above-mentioned warning, the inner motor of motor case (24) will work overloadingly constantly.In this case, the air throttle (28a) that is arranged on the lid (28) is started working.That is to say that if the pressure ratio outside of control of dust space (22a) is low significantly, this air throttle (28a) will be opened, make the dust catcher air outside flow into inside, control of dust space (22a), prevent the overwork of motor.
But there are the following problems in use for above-mentioned located by prior art.
Above-mentioned air throttle (28a) and pressure switch (27) are the parts that are provided with in order to prevent motor overload work.The perception of pressure switch (27) institute be the pressure of control of dust space (22a), and measure by tube connector (25a), therefore might produce error to piezometry.And after leaked-in air flow into control of dust space (22a) by air throttle (28a), filter flow direction motor casing (24) via control of dust.In fact, the air capacity of flow direction motor casing (24) is also insufficient, therefore, can not prevent the overwork of motor effectively fully.In addition, the structure of located by prior art is complicated, needs to use some to wait other structure members as pipe, number of components is increased, and make packing engineering complicated.
Three, summary of the invention
In order to solve the problems referred to above that located by prior art exists; the objective of the invention is to, a kind of vacuum cleaner with electric motor protective device is provided, make its perception motor excess load of being born correctly; when motor overload, can directly flow into sufficient air to motor case.
Still a further object of the present invention is, a kind of vacuum cleaner with electric motor protective device is provided, and it is provided with protective device simple in structure, to reach the effect of protection motor.
The objective of the invention is to realize by following technical scheme.
A kind of vacuum cleaner with electric motor protective device comprises body of dust collector, and body comprises lower part box, motor case, motor, dust box, filter again; It is characterized in that described body of dust collector also is provided with upper box body, this lower part box is positioned at described body bottom, and the motor case that the upper surface is open shape is arranged at top one side of lower part box, and inside is provided with drive motors; Filter is arranged on the top of lower part box, and foreign matter in the leaked-in air is filtered; Middle cover is positioned at dust box top and the motor case upper face forms one, on the motor case upper face of described middle cover pressure switch and air throttle are set, described pressure switch perception motor case internal pressure, when motor case inside was low pressure, air throttle made the direct flow direction motor casing of air outside inside
The present invention has following effect: because the direct perception motor case pressure inside of pressure switch; therefore can the most responsively correctly make reflection again to the excess load of motor; when motor overload; can be directly flow into air outside by air throttle, can not only protect motor rapidly but also fully to motor case.
Four, description of drawings
Fig. 1 is a stereoscopic schematic diagram of commonly using vacuum cleaner.
Fig. 2 is an exploded perspective schematic diagram of commonly using vacuum cleaner.
Fig. 3 commonly uses the tube connector of vacuum cleaner and the annexation schematic diagram of demarcation strip.
Fig. 4 is an exploded perspective schematic diagram of the present invention.
Fig. 5 is the internal structure schematic diagram of major part of the present invention.
Five, the specific embodiment
At first, consult Fig. 4 and shown in Figure 5, the overall structure of vacuum cleaner of the present invention is described.
The body of vacuum cleaner is made up of the upper box body of being located at the upper and lower (110) and lower part box (170) respectively.The inside of upper box body (110) and lower part box (170) is provided with as lower member.
In the place ahead, top of lower part box (170) motor case (160) is set, the rear is provided with dust box (140).Dust box (140) is after the air that contains foreign matter that will flow into body of dust collector inside filters, and the air after filtering is discharged to the outside via motor case (160).
Above-mentioned dust box (140) flow into contained foreign matter in the interior air of body of dust collector as long as can filter, so this dust box (140) adopt any structure can, for example can adopt the preliminary control of dust of rotation gradation mode and the control of dust again by filter.
As shown in Figure 5, the foregoing description is specifically described.
This dust box (140) can by regularly carry out preliminary control of dust and again the structure of control of dust form.
The working procedure of this preliminary control of dust is: rotate along medial surface at the inner spiral flow that forms of dust box (140) to the inner air that contains foreign matter that flows into of above-mentioned dust box (140), the foreign matter that quality is bigger drops by deadweight.
This again the working procedure of control of dust be: the air that has carried out preliminary control of dust filtered tiny dust through the filter of making of paper or synthetic resin (144) earlier before discharging to the outlet (142) of dust box.
Front part at lower part box (170) divides setting to be built-in with the motor case (160) of drive motors (150).The drive motors (150) that is arranged in this motor case (160) is actually the parts that produce suction.The upper end of this motor case (160) is opening-like attitude.Because the inside of above-mentioned motor case (160) is built-in with drive motors (150), if this drive motors (150) is driven, will produce suction.In addition, by going up the suction that produces, make the air that contains foreign matters such as dust flow into the inside of dust box (140) at drive motors (150).
That is to say,,, make the air that contains foreign matter flow into body of dust collector through the suction inlet (146) of body of dust collector by going up the suction that produces at this drive motors (150).In addition, as shown in Figure 4, this suction inlet (146) is arranged in the suction portion (112) of upper box body (110).
Air flows into by suction inlet (146), finishes the foreign matter process of filtering in the inside of dust box (140), discharges by outlet (142) then, for example, as shown in Figure 5, is directed in the motor case (160) by tube connector (145).Because the top of this motor case (160) is to be open shape, via after drive motors (150) heat release, discharge by a side of motor case (160) again by the top leaked-in air.
The top of this dust box (140) and motor case (160) is provided with middle cover (120).This middle cover (120) can cover set parts above this motor case (160) and the dust box (140) simultaneously.
In addition, in middle cover (120), be positioned at dust box (140) top and motor case upper face (124) and form one.This motor case upper face (124) keeps certain section poor with dust box top (122), and abuts against the top of motor case (160).(124) nestle up and are arranged on the open upper end of motor case (160) on the above-mentioned motor case.
In the dust box top (122) of middle cover (120), be provided with the outlet opening (123) that is connected with the outlet (142) of dust box (140).In addition, be provided with motor case ostium (125) in this motor case upper face (124), this motor case ostium (125) makes the air of discharging from outlet opening (123), flow into again in the motor case (160) by tube connector (145).
Therefore, the motor case upper face (124) that abuts against the open upper end of motor case (160) is actually and makes motor case (160) be in closed state.Like this, by motor case ostium (125), air can flow into the inside of the motor case (160) of sealing.
In addition, in this motor case upper face (124), be respectively equipped with air throttle installing hole (126) and the switch installing hole (128) that is connected with motor case.Be provided with air throttle (A) in this air throttle installing hole (126).By the pressure differential of the upper and lower of the motor case upper face (124) of middle cover (120), this air throttle (A) just can be opened; If upper pressure height, the bottom pressure of middle cover (120) are low, will be opened, air can be flowed into to the bottom (that is motor case inside) of middle cover (120).Though air throttle (A) main body structure is a located by prior art,, consult Fig. 6, also need the structure of air throttle (A) is illustrated simply.
As shown in Figure 6, air throttle (A) is made up of following structure.The top and the bottom of casing (Aa) are provided with opening; Shield (Ab) is arranged on the top of casing; Spring (Ac) nestles up shield (Ab) and upwards pushes away, and makes top closure of openings.So, be provided with the pressure of bottom (motor case) of middle cover (120) of air throttle (A) when very low, be compressed by pressure official post spring (Ac), shield (Ab) will move to the below.At this moment, the air on middle cover (120) top can flow into by top opening, flow into the inside of motor case (160) again by following opening.
In the switch installing hole (128) of this middle cover (120) pressure switch (B) is installed, this pressure switch (B) can be measured motor case (160) pressure inside that is arranged on middle cover (120) bottom.Like this, because the structure of pressure sensor is a located by prior art, so no longer describe in detail.
The course of work to vacuum cleaner of the present invention is described as follows below.
At first, the drive motors (150) that starter motor casing (160) is inner makes vacuum cleaner produce suction.As shown in Figure 5, by suction, flow into by the suction inlet (146) that is located in upper box body (110) the suction portion (112) as the first-class air that contains foreign matter in ground, room.
Flow into the inside of dust box (140), the foreign matter that in the complete filtered air in the inside of dust box (140), is contained by suction inlet (146) leaked-in air.For example, the preliminary control of dust by rotation gradation mode and by filter control of dust again filters out the foreign matter that is contained in the air fully.
In addition, the air of discharging from dust box flows in the motor case by tube connector (145).Air in the inflow motor case (160) is discharged to the outside by the side of motor case after the motor that produces heat in driving is cooled off.
By the driving mechanism in the above-mentioned vacuum cleaner, produce following problem in the inner meeting of dust box (140).For example, if waste paper is inhaled into the lateral surface that body of dust collector gets lodged in the inner filter of dust box (140), apply load will for drive motors (150).That is to say that drive motors (150) is worked normally, and it is undesired to flow into the inner air of motor case (160) from dust box (140), makes drive motors (150) be in the duty of excess load.
At this moment, if when drive motors (150) is in the state of excess load, will make the bottom of facial (124) on the motor case of middle cover (120) and the pressure reduction of the interior volume formed by motor case (160).If the foreign matter that perhaps is inhaled into get lodged in vacuum cleaner suction line, prolong pipe and be connected the inside of flexible pipe etc., also all can make the reduction of motor case (160) pressure inside.If pressure reduces, pressure switch (B) will tentatively perceive pressure and descend.According to the perceptual signal of pressure switch (B),, tell the user that vacuum cleaner is in abnormality by the means of lumination of light emitting diode etc.In addition, above-mentioned pressure switch (B) descends so can very sensitively correctly perceive motor case (160) pressure inside again because be set directly at the top of motor case (160).
As mentioned above, if the user learn that vacuum cleaner is inner and occur unusually, will interrupt using, by checking dust box, can remove unusual reason [for example, the filter of dust box (144) stopped up by waste paper state] takes place.After solving the unusual reason of generation, can normally enable vacuum cleaner again.
But, the user do not obtain above-mentioned pressure switch (B) based on situations such as the warning sound of perceptual signal or warnings in, will further increase the suffered load of drive motors (150) of vacuum cleaner.If increase the load of drive motors (150), this drive motors (150) just can normally not carry out work, even cause fatal damage.
The load certain time that drive motors (150) is born reduces the motor case pressure inside, and the air throttle (A) that is installed in the motor case upper face (124) of middle cover (120) will be started working.
This air throttle (A) reduces along with motor case (160) pressure inside, and by the top of middle cover (120) and the pressure differential between the motor case (160), can open.That is to say that as shown in Figure 6, by the pressure differential on motor case (160) and middle cover (120) top, compression spring (Ac) makes shield (Ab) move to the below.So the top of air throttle (A) is by opening, extraneous air flow in the motor case (160).Like this, if air outside flows into motor case (160), the load that is applied on the above-mentioned drive motors (150) just is disengaged.
This air throttle (A) among the present invention can be removed the excess load of motor fully owing to be directly installed on the upper face (124) of motor case (160).Whether drive motors (150) works overloadingly and depends on the susceptibility of perception motor case (160) internal pressure.In addition, by directly importing air outside, can not only remove the overwork of drive motors (150) rapidly but also fully to motor case (160).
As mentioned above, basic technological thought of the present invention is: air throttle (A) and pressure switch (B) are set directly on the motor case upper face (124).
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did
Such as being that example describes with dust box (140) in the above-described embodiments, above-mentioned dust box filters as the filtration means and flow into vacuum cleaner body inside and contain foreign matter in the air of foreign matter.But, because the present invention is in order to filter the device of foreign matter, therefore not only to be defined in dust box (140) naturally.That is to say, can adopt other means that replace above-mentioned dust box (140) can filter foreign matter.Such as, can use dust bag made of paper etc.
Claims (1)
1, a kind of vacuum cleaner with electric motor protective device comprises body of dust collector, and body comprises lower part box, motor case, motor, dust box, filter again; It is characterized in that described body of dust collector also is provided with upper box body, described lower part box is positioned at described body bottom, and the motor case that the upper surface is open shape is arranged at top one side of lower part box, and inside is provided with drive motors; Filter is arranged on the top of lower part box, and foreign matter in the leaked-in air is filtered; Middle cover is positioned at dust box top and the motor case upper face forms one, on the motor case upper face of described middle cover pressure switch and air throttle are set, described pressure switch perception motor case internal pressure, when motor case inside was low pressure, air throttle made the direct flow direction motor casing of air outside inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01144385 CN1426756A (en) | 2001-12-18 | 2001-12-18 | Vacuum cleaner having electric motor protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01144385 CN1426756A (en) | 2001-12-18 | 2001-12-18 | Vacuum cleaner having electric motor protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1426756A true CN1426756A (en) | 2003-07-02 |
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ID=4677534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01144385 Pending CN1426756A (en) | 2001-12-18 | 2001-12-18 | Vacuum cleaner having electric motor protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1426756A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100358456C (en) * | 2003-09-27 | 2008-01-02 | 乐金电子(天津)电器有限公司 | Heat radiation structure of vacuum cleaner |
| CN100418466C (en) * | 2005-05-30 | 2008-09-17 | 三星光州电子株式会社 | Apparatus for protecting a motor of a vacuum cleaner |
| CN102334946A (en) * | 2010-07-27 | 2012-02-01 | Wallstar株式会社 | Dust-collector suction nozzle for capturing mites |
-
2001
- 2001-12-18 CN CN 01144385 patent/CN1426756A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100358456C (en) * | 2003-09-27 | 2008-01-02 | 乐金电子(天津)电器有限公司 | Heat radiation structure of vacuum cleaner |
| CN100418466C (en) * | 2005-05-30 | 2008-09-17 | 三星光州电子株式会社 | Apparatus for protecting a motor of a vacuum cleaner |
| CN102334946A (en) * | 2010-07-27 | 2012-02-01 | Wallstar株式会社 | Dust-collector suction nozzle for capturing mites |
| CN102334946B (en) * | 2010-07-27 | 2015-11-18 | Wallstar株式会社 | Catch the cleaner suction nozzle of acarid |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |