KR20010055147A - recirculating type vacuum cleaner - Google Patents

Abstract

PURPOSE: A vacuum cleaner makes a motor radiate heat smoothly to extend life of the motor and prevent hear deformation of parts thereof. CONSTITUTION: A vacuum cleaner comprises a main body(410), a suction inlet body(420), a suction flow passage(422), a dust bag(413), a cooling flow passage(450) and a reflux flow passage(440). The main body(410) has a fan(411) connected with a motor(412) with a shaft to generate suction force inside. The suction inlet body(420) has a suction inlet(421) to suck air and foreign matters in. The suction flow passage(422) connects the inside of the main body(410) with the inside of the suction inlet body(420) to communicate with each other to transmit suction force generated in the main body(410) to the inside of the suction inlet body(420). The dust bag(413) is placed inside the main body(410) to collect foreign matters sucked in to the inside of the main body(410) through the suction flow passage(422). The cooling flow passage(450) communicates with the outside of the main body(410) to guide the movement of external air to cool the motor(412) placed in the main body(410). The reflux flow passage(440) has a part formed to penetrate the cooling flow passage(450) to guide the movement of air passing through the dust bag(413) through the fan(411) to the inside of the suction inlet body(420). The part of the reflux flow passage(440) penetrating the cooling flow passage(45) is formed zigzag to increase heat radiating efficiency.

Description

Recirculating type vacuum cleaner

The present invention relates to a vacuum cleaner, and more particularly, to a reflux reflux vacuum cleaner that can prevent indoor pollution by reusing air discharged by dust collection in a vacuum cleaner.

In general, vacuum cleaners can be roughly classified into canister type vacuum cleaners and up-right type vacuum cleaners.

Unlike the canister type cleaner, the upright cleaner is a vacuum cleaner mainly used in a wide area such as a living room, especially a place where a carpet is laid, and the overall structure thereof will be described later.

Figure 1 is a perspective view showing the appearance of a general upright type vacuum cleaner as described above, the suction body is formed in the suction port is formed so that the main body 110 and the lower portion is coupled to the lower portion of the main body to suck a variety of foreign matter such as dust Sphere 120 and the handle portion 130 is connected to the upper end of the main body.

In this case, as shown in FIG. 2, the lower part of the main body is provided with a motor 112 coupled to the fan 111 to rotate the fan 111 to generate a vacuum force. The dust collecting bag 113 is provided to collect the air sucked through the suction port 120 and various foreign matters, and the air that is sucked into the main body 110 and passed through the dust collecting bag 113 in front of the main body is collected. Discharge holes 114 are formed to be discharged to the outside of the main body.

In addition, a suction flow path 122 is formed inside the suction port 120 to guide the flow of various dust and air sucked through the suction port 121, and one end of the suction flow path is a dust collecting bag in the main body 110. In communication with (113).

At the position where the suction port 121 of the suction port 120 is formed, a rotating brush 123 partially exposed through the bottom surface thereof is rotatably installed, and the rotating brush includes a motor 112 provided in the main body 110. It is connected to the shaft (112b) of the belt as a belt 115 receives a driving force.

At this time, as the motor is composed of a biaxial motor protruding shaft 112a and 112b on both sides thereof, the motor can transmit its driving force to the fan 111 and the belt 115 provided in the main body 110, respectively. It is understandable.

However, according to the conventional general upright type vacuum cleaner configured as described above, since the air used for cleaning passes through the dust collecting bag 113 and is discharged back into the room, the smell generated from various foreign matters collected in the dust collecting bag and Various bacteria also had to be discharged to the room through the dust bag 113 with the air.

As a result, the indoor air may be contaminated, which may cause a user's hygiene problem, resulting in a decrease in reliability of the user's product.

Figure 3 is a schematic internal configuration of the exhaust reflux vacuum cleaner showing a state in which the exhaust reflux method is adopted to solve the problem.

That is, the reflux passage 140 having the injection hole 141 is formed to close the discharge hole formed in the main body, and the air dissipating the motor 112 again flows to the inlet body 120.

Due to this, the air containing various odors and bacteria while passing through the dust collecting bag 113 sequentially passes through the motor 112 and the reflux flow passage 140 to be the bottom of the suction port 120 through the injection hole 141. The air is discharged to the ground, and the discharged air is again sucked by the suction force transmitted through the suction port 121 of the suction port 120 to perform a continuous circulation.

However, the vacuum cleaner using this type of exhaust reflux method has a structure in which the cooling of the motor 112 is performed by using reflux air continuously refluxing, but in general, the temperature of the air passing through the motor 112 is increased. In consideration of the fact that it is impossible to cool the motor 112 any more due to the gradual temperature rise of the reflux air due to the continuous reflux, and eventually the winding 112c of the motor 112 has to be overheated.

This causes a drastic deterioration of the motor performance, which in turn causes a problem that the cleaning efficiency of the vacuum cleaner also deteriorates.

4 is a canister type vacuum cleaner to which the exhaust reflux method is applied, and 20% of the reflux air reflux is configured to prevent hygienic problems and motor overheating as described above. It is discharged into the room, and the structure is configured to allow the reflux by suctioning the amount of the discharged air again.

That is, the dust collecting bag 213 and the motor 212 in the main body 210 are provided, respectively, and the air passing through the motor is sprayed toward the entire area on the front side of the suction port 221 formed on the bottom surface of the suction port 220 again. A reflux flow path 240 is formed as possible, and an exhaust port 216 is formed on the rear surface of the main body, which is a rear side of the motor.

At this time, by forming the injection port 224 to correspond to the suction port 221 on the front side of the bottom of the suction port body, air flowing through the reflux flow path 240 is injected to the ground which is the bottom of the suction port 220 through the injection port It can be possible.

By such a structure, air and various odor components or bacteria, etc., which have passed through the dust collecting bag 213 in the main body 210 are not directly discharged to the outside of the cleaner, but flow to the side where the motor 212 in the main body 210 is provided. To cool the motor 212, and then the air cooled by the motor flows under the direction of the reflux flow path 240 and flows forward through the injection hole 224 formed in the suction port 220. Sprayed to the side.

Then, the reflux air injected into the bottom surface of the suction port 220 as described above receives the suction force generated continuously through the suction port 221 of the suction port and is sucked into the suction port and continues to flow back into the main body 210. The reflux of the air is made to achieve the effect that the indoor discharge of odors and bacteria generated from various pollutants can be prevented.

In this case, as the exhaust port 216 is formed in the space in which the motor 212 of the main body 210 is located, approximately 20% of the reflux air, which is a part of the reflux air passing through the motor 212, is exhausted. The air is discharged to the outside of the cleaner, the new amount of air exhausted through the exhaust port 216 is introduced through the inlet 221 formed in the inlet body 220 to achieve a temperature decrease of the refluxed air.

Accordingly, it can be understood that the heat dissipation effect of the motor can be better.

However, such a structure also has to re-induce indoor pollution, which is an inherent problem, as it is discharged together with various smells and bacteria in the exhaust air.

In addition, the above-described structure, that is, the structure of heat dissipating the motor by the inflow of indoor air due to the discharge of 20% reflux air, considering the current trend of increasing the capacity, the larger the size of the motor, the effect will only gradually be negligible to the end, A thermostat (not shown) had to be separately mounted around the motor to selectively drive or stop the motor 212.

However, such a structure also prevents overheating of the motor windings to some extent, but as the cleaning is not performed collectively, that is, when the driving of the motor 212 is stopped, the cleaning is not made. The user's inconvenience is inevitably aggravated.

The vacuum cleaner shown in Fig. 5, which is the invention described in US Pat. No. 5,574,48, adopts the exhaust reflux method as described above, wherein 20% of the refluxed air is configured to be replaced with new air and the suction efficiency The structure is improved.

That is, an additional bypass valve 341 is further provided on the reflux flow passage 340 to be configured to appropriately adjust the opening and closing degree according to the suction efficiency, and the position of the injection hole 324 connected to the reflux flow passage is the suction inlet body ( It protrudes through the suction port 321 of 320 so as to be located in the area S where suction is performed.

Therefore, when the air and various dusts are introduced by the operation of the first cleaner, the bypass valve 341 formed on the reflux flow passage 340 is in a closed state, so that reflux of the reflux air is made 100%.

In addition, when the pressure on the inlet port 321 is increased in the process of repeating the above process, the bypass valve is opened so that some of the reflux air is indoors through the open exhaust port 316 in the main body 310. Is discharged to, and the amount of the discharged air is newly introduced through the inlet 321 formed in the inlet body (320).

As a result, not only the heat dissipation effect of the motor 312 can be maintained, but also the indoor pollution due to the discharged air can be prevented as much as possible.

However, this type is also weak, but the contamination of the room is made continuously, causing consumer dissatisfaction. Especially, the motor overheating occurs again when the cleaner is used for a long time because the motor heat dissipation effect is not excellent. There was no choice but to.

In addition, when using a large-capacity motor, as described above, the newly introduced air alone is inadequate enough to prevent overheating of the motor, and as a result, the limitation of the application field that must be used only in a small-capacity motor is limited. Triggered.

At the same time, overheating of the reflux air is caused by heat generated from a motor due to continuous reflux of the air. Such overheating of the reflux air also causes a problem of causing thermal deformation of various accessories constituting the cleaner. Therefore, to prevent this, another separate structure is required.

The present invention has been made to solve the above-mentioned conventional problems, to facilitate the heat dissipation of the motor constituting the exhaust reflux vacuum cleaner to prevent the extension of the life of the motor and deterioration of the performance in advance, and continuously The purpose of the present invention is to enable the heat dissipation of the refluxed air to be performed smoothly and to prevent thermal deformation of each component due to the refluxed air.

1 is a perspective view showing a general upright cleaner

2 is a configuration diagram schematically showing the structure of a general vacuum cleaner

3 is a schematic view showing the structure of a general exhaust reflux vacuum cleaner

Figure 4 is a perspective view schematically showing a canister cleaner to which a conventional exhaust reflux method is applied

5 is a cross-sectional view showing another type of cleaner to which the conventional exhaust reflux method is applied.

Figure 6 is a schematic view showing the structure of the exhaust reflux vacuum cleaner according to the present invention

Explanation of symbols for main parts of the drawings

410. Body 420. Intake port

440. Reflux flow path 450. Cooling flow path

According to an aspect of the present invention for achieving the above object, a main body having a fan axially coupled to the motor to generate a suction force therein, an intake port formed with a suction port to suck air and various foreign matter, and the A suction flow passage for transmitting suction force generated in the main body to the suction suction body by being installed in communication with the inside of the suction port, and for collecting various foreign substances introduced into the main body through the suction flow passage provided in the main body. A dust collecting bag, a cooling flow path for guiding the flow of external air to cool the motor provided in the main body in communication with the outside of the main body, and a flow of air passing through the dust collecting bag in the main body through the fan It is directed to the inside of the sphere and a part thereof includes a reflux flow passage formed through the cooling flow passage It is provided with exhaust gas recirculation type vacuum cleaner.

Figure 6 is a block diagram showing a schematic structure of the exhaust reflux vacuum cleaner according to the present invention.

Referring to this in more detail the structure according to an embodiment of the present invention.

First, the present invention forms a reflux flow path 440 so that the flow of air to reflux passes only through the fan 411 to flow into the intake port 420, the inside of the body 410 is in communication with the outside of the body As a state to form a cooling flow path 450 for guiding the flow of external air to cool the motor 412 provided in the main body 410, the air continuously reflux along the reflux flow path to the motor 412 It is configured to penetrate a portion of the reflux flow path 440 on the path of the cooling flow path 450 so that the heat radiation can be performed by the air for cooling.

In this case, the reflux flow passage is installed to penetrate the inside of the cooling passage 450 on the flow path of the external air cooled by the motor 412, and the reflux air flowing through the reflux passage flows through the cooling passage 450. Allow for mutual heat exchange with air.

In addition, one end of the reflux flow passage 440 configured to pass along the inside of the cooling flow passage has a contact area between the reflux flow passage 440 and the cooling flow passage 450 by being configured in a zigzag form bent many times as in the embodiment of the present invention. It is more preferable to widen the heat radiation of the reflux air passing through the reflux flow path 440 more smoothly.

The structure as described above is to prevent the external discharge of the air flowing back to the main body 410 to be continuously reflux, and also to prevent overheating of the motor 412 provided in the main body 410 And, it is to be able to simultaneously perform the action to prevent the induction of deformation of each component due to overheating of the reflux air by the continuous reflux of the reflux air.

Hereinafter, the operation according to the present invention configured as described above will be described in more detail.

First, when power is supplied to the cleaner according to the user's needs, the motor 412 in the main body 410 is driven to rotate the fan 411 to generate suction force.

The suction force generated in this way is transferred to the suction port 421 of the suction port 420 connected to the suction channel through the dust collecting bag 413 and the suction channel 422, and thus the room on the ground that is the bottom of the suction port. Air and various foreign matters are sucked through the suction port.

In addition, the air and various foreign substances sucked into the suction port 420 as described above are introduced into the dust collecting bag 413 provided in the main body 410 through the suction passage 422, and then by the dust collecting bag. Various foreign matters are collected and at the same time, only the air passes through the dust collecting bag and flows inside the main body 410 by the continuous suction force generated from the fan 411.

At this time, the air flowing inside the main body flows through the fan 411 along the reflux flow path 440, and then flows back into the inlet port 420 through the injection port 441.

In this case, the cool air outside the main body 410 flows to the side where the motor 412 is located through the cooling passage 450 to cool the heat generated from the driving of the motor, and the air cooling the motor Subsequently, guided by the cooling passage 450 is discharged to the outside of the main body 410.

In the above, the air flowing into the fan 411 and the motor 412 is not mixed with each other, so that the reflux flow path 440 guiding the flow of the reflux air to the side where the fan 411 is located is located to the side where the motor 412 is located. It is possible by partitioning with each of the cooling passages 450 for guiding the flow of air.

In addition, the air outside the main body 410 introduced to the side where the motor is located may be simply configured to allow the flow to occur naturally, although not shown in the figure, but provided with a separate cooling fan forcibly blown air is made It is more preferable to configure it.

During this process, as the reflux flow path 440 passes through a portion of the cooling flow passage 450, the reflux air flowing along the reflux flow passage passes through a region penetrating the inside of the cooling flow passage. In the process of performing heat exchange with the air flowing along the interior of the cooling flow path is made to the heat radiation.

In addition, a portion of the reflux flow passage 440 formed through the interior of the cooling flow passage 450 has a larger range than the air flowing in the cooling flow passage as the shape of the reflux flow passage 440 is zigzag. And the reflux air passing through the reflux flow path is also in contact with the inner surface of the reflux flow path 440 in the course of passing through the side where the cooling flow path is located. It is understandable that we can go further.

As a result, according to the configuration of the present invention as described above and the action made due to the configuration of the present invention, the reflux air is continuously refluxed 100% and at the same time smooth heat dissipation, the motor 412 is the main body 410 Since direct contact is made by a separate cooling air introduced from the outside it is possible to achieve a smooth heat dissipation.

In addition, this invention is not necessarily limited to what is comprised only in the form same as the Example mentioned above.

That is, it is not necessary to form a separate flow path for heat exchange between the refluxed air and the air for heat dissipation of the motor, so that the reflux flow passage is not formed through the inside of the cooling flow passage so that continuous contact can be made. It does not matter even if configured.

However, in order to allow each air flowing in the reflux flow path and the cooling flow path to perform maximum heat exchange with each other as in the embodiment of the present invention, the flow of air for cooling is continuously contacted through the entire outer peripheral surface of the reflux flow path. More preferably.

In addition, the reflux and cooling forms as in the present invention are not applicable to any specific type of vacuum cleaner, but can be applied to various types of vacuum cleaners, that is, canister vacuum cleaners or upright vacuum cleaners. It is easy to understand.

As described above, the present invention improves the structure of the exhaust reflux vacuum cleaner so that the refluxed reflux air is continuously refluxed so that various odor components and bacteria flowing in the state included in the reflux air are discharged back into the room. It is possible to solve the problems caused by hygiene, and the heat dissipation of the motor can be performed smoothly by allowing a separate cooling air flows directly from the outside of the main body has the effect that can be solved at the same time also problems caused by overheating of the motor .

In addition, due to the continuous reflux of the reflux air, the reflux air is overheated and the thermal deformation of each component can be smoothly prevented by using the cooling air flowing for heat dissipation of the motor described above. There is no need to configure a separate structure for overheating prevention.

Each effect as described above not only enables the use of a large-capacity motor for each type of vacuum cleaner, but also enables the continuous cleaning to be carried out in a stable state, thereby achieving an effect of improving the user's reliability. do.

Claims (3)

A main body having a fan axially coupled to the motor to generate suction therein; A suction inlet formed with a suction port to suck air and various foreign matters; A suction flow passage configured to communicate the inside of the main body with the inside of the suction inlet to transfer suction force generated in the main body into the suction inlet; A dust collecting bag provided inside the main body to collect various foreign substances introduced into the main body through a suction flow path; A cooling passage for guiding the flow of external air to cool the motor provided in the main body in communication with the outside of the main body; The flow of air passing through the dust collecting bag in the main body is guided to pass through the fan to the inside of the inlet port, and part of the exhaust reflux vacuum cleaner characterized in that it comprises a reflux flow passage formed through the cooling flow passage . The method of claim 1, The reflux flow passage is installed to penetrate the inside of the cooling flow passage on the flow path of the external air cooled by the motor so that the reflux air flowing through the reflux flow passage can mutually exchange with the cooling air flowing through the cooling flow passage. Exhaust reflux vacuum cleaner. The method of claim 2, An exhaust reflux vacuum cleaner, characterized in that one end of the reflux flow passage passing through the cooling flow passage is formed a plurality of times to widen the contact area therebetween so that mutual heat exchange can be performed more smoothly.