KR200385257Y1 - A filter assembly for heat-exchanging devices - Google Patents

Abstract

The present invention relates to a filter device for a total heat exchanger, wherein the filter receiving portion includes a filter supply portion and a waste filter receiving portion for accommodating a filter having a length that can be replaced by a number of times sufficient to cover the life span of the total heat exchange element. In addition, by recovering the waste filter by rotating the support shaft for accommodating the waste filter by a motor which is operated at a predetermined cycle according to the installation environment of the total heat exchanger, the filter is drawn out from the filter supply part by the tensile force, and the supply passage and exhaust of the heat exchanger are exhausted. By providing a filter device in which the filter is arranged in the passage, the waste filter is automatically recovered at a predetermined cycle, and a new filter of the filter supply is automatically placed in the air passage, whereby a manual filter is used for the life of the conventional electrothermal exchange element. Economic burdens such as labor costs due to replacement are eliminated, There is an advantage that can be generalized and thus keep the environment clean by the harmful substances such as dust in buildings and houses.

Description

Filter device for total heat exchanger {A FILTER ASSEMBLY FOR HEAT-EXCHANGING DEVICES}

The present invention relates to a filter device of a total heat exchanger, and in particular, in order to minimize heat loss in the case of ventilating muddy air in a room, an improved filter is more easily and automatically performed in a total heat exchanger which performs heat exchange during ventilation. It relates to a filter device.

As buildings such as multi-purpose buildings and officetels are becoming higher and denser, the windows are not open and airtight, making it difficult to ventilate the outside and the interior naturally. Due to the level of pollution caused by substances, installation of facilities to ventilate indoor air is mandatory.

In addition, cattle, pigs, etc. also continue to maintain the hygiene of livestock and managers because the environment in the house is very poor due to the smell of livestock excretion and dust from sawdust or crests placed on the ground for livestock. Indoor air ventilation is essential.

By the way, the essential considerations in the ventilation of indoor air in such buildings or houses are the filtering and thermal efficiency of harmful substances such as dust.

In particular, in the case of buildings or houses in winter, when the indoor air is ventilated with cold outside air, or when the indoor air is properly cooled by the hot air and relatively cooling in the summer, enormous heat loss is caused. Since more heating is required to maintain the temperature, there is a problem of energy waste and fuel burden on the user.

As such, the heat exchanger 1 schematically illustrated in FIG. 1 is used to recover heat energy of indoor air through heat exchange when inflow of relatively hot exhaust air and relatively cold outside air in the room during ventilation of the building.

The heat exchanger has an air supply fan (2) for forcibly introducing fresh air into the room, and an exhaust fan (4) for exhausting muddy air to the outside while the air supply fan (2) is installed in the external air inflow passage (3). It is provided in the exhaust passage 5, and the heat exchange element 6 is arrange | positioned between the air supply fan and the exhaust fan.

Although not shown in the drawing, the total heat exchange element is typically formed with a plurality of air inflow passages and exhaust passages interposed therebetween so that the heat exchange occurs between the inflow air and the exhaust air which flows adjacent to the relatively warm indoor air. The heat energy is recovered from the. At this time, when the dust contained in the air sticks to the membrane forming the air passage in the heat exchange element, heat exchange between the inlet air and the exhaust air is not performed smoothly. At least one filter 7 is arranged in the air passage between the exhaust fans.

To this end, the electrothermal heat exchanger includes a prefilter made of a nonwoven fabric, a photocatalyst filter coated with a photocatalyst on a material such as a carbon filter and a prefilter, and a hepa filter having a pleat structure. These filters are used in the conventional flat plate structure and can be replaced by a detachable method. However, in order to keep the life of the relatively expensive electrothermal exchange element as long as possible, it is necessary to replace the filters by experts at the appropriate time. Since the dust pollution environment of the place where the electrothermal exchanger is installed is different, the school, general apartment or school For example, it is difficult for the barn or building manager to know when to replace the filter properly, and when the specialist calls for the replacement of the filter, the burden of labor costs for the filter replacement over the lifetime of the heat exchange element is more than the cost of the heat exchanger. There is a problem that occurs.

Therefore, a filter device capable of automatically replacing the filter during the life of the total heat exchange element according to the environment in which the total heat exchanger is installed for ventilation is desired.

It is an object of the present invention to provide a filter device for an electrothermal exchanger that is improved to solve the problems caused by the filter replacement of the conventional electrothermal exchanger and to be replaced with a new filter automatically after a predetermined period of time.

The above object is according to the present invention, the filter supply for accommodating the unused new filter, and the waste spaced apart by a distance corresponding to the width of the air passage ventilated from the filter supply and closed for receiving the used filter for a period of time And a filter supporter rotatably disposed in the case of each of the filter accommodating part and the filter supply part and the waste filter accommodating part to support the filter being wound. The waste filter exposed to the air passage for a predetermined period is used as the waste filter accommodating part. It is achieved by a filter device for a total heat exchanger which comprises a filter feeder which winds up and pulls out a new filter of the filter supply at its tension.

The filter support is preferably configured to include a support plate in a disc state for supporting the filter at the lower end, and a support shaft portion extending to the upper side of the support plate so as to be coupled as a cylinder is divided.

The filter conveying apparatus includes a motor having a gear portion formed on an outer circumferential surface of a support plate of the waste filter accommodating part, the motor engaging the gear of the output shaft to rotate the support plate, and by the rotation of the support plate of the waste filter accommodating part. The tension of the waste filter being wound allows the new filter to be released from the support shaft of the filter supply and transported to the air passage.

The support shaft portion is fixed to the upper surface of the support plate, while the support shaft portion is coupled to the support shaft by a fastening means such as a screw to form a support shaft for winding the filter, and when the support shaft portions are engaged, the end of the filter is disposed therebetween. It is preferably configured to be fixed together.

In addition, a perforated hole is formed in the filter at a predetermined length so that a predetermined length of the filter between the filter supply part and the waste filter accommodating part is withdrawn from the filter supply part when the filter is replaced, and the filter supply part detects the position of the hole. An optical sensor for outputting a signal is provided, and in response to the output signal of the optical sensor, the motor is stopped and the power supply to the pressing device is cut off.

Hereinafter, with reference to the accompanying drawings showing an embodiment of a filter device for a total heat exchanger according to the present invention will be described in more detail.

2 and 3 show the filter device 10 of the improved structure so that the filter is automatically replaced according to the present invention. The filter device includes a filter supply unit (11) for accommodating a new filter unused, and a waste filter accommodating the filter used for a certain period of time and disposed spaced apart by a distance corresponding to the width of the air passage vented from the filter supply unit. And a portion 12.

The filter supply part 11 and the waste filter accommodating part 12 each include a filter support 16 which is rotatably disposed at the rotational support shaft part 15 protruding from the bottom of the case 13. As shown in Fig. 4, the filter support has a support plate 17 in a disc state for supporting a filter at a lower end thereof, and support shaft portions 18 and 19 which are provided to be coupled to each other by extending above the support plate. ). The support shaft portion 18 is fixed to the upper surface of the support plate 17, while the support shaft portion 19 is coupled to the support shaft portion 18 by a fastening means such as a screw to form a support shaft portion for winding the filter, the support shaft portion When the (18, 19) are engaged, the filter is wound around the support shaft portion 18 of the filter supply portion 11 and the support shaft portion 19 of the waste filter receiving portion 12 by arranging and fixing the ends of the filters therebetween. Do not let the filter slip.

A protrusion is formed inside the cover 20 of the upper end of the filter device shown in FIG. 2 so as to fit into the groove 21 formed at the top of the support shafts 18 and 19 so that the support shafts are formed on the protrusions and the bottom of the case. It is freely held rotatably between the formed support shafts 15.

In addition, a gear 22 is formed on the outer circumferential surface of the support plate 17 of the waste filter accommodating portion 12 so as to transfer the waste filter and the new filter, and the gear portion 24 provided to the output shaft of the motor 23. As the support plate of the waste filter accommodating portion 12 is rotated by the motor driving, the unfiltered filter of the filter accommodating portion 11 is drawn out by the tensile force while the waste filter is wound around the support shaft portion 19.

The filter supply unit 11 and the waste filter receiving unit 12 are spaced apart by a predetermined distance, and the separation distance is a distance including a width of the air supply passage and the exhaust passage of the heat exchanger. The filter 25 is disposed between the new filter filter supply part and the waste filter accommodating part 12 drawn out from the filter supply part 11, and the filter 25 is disposed in the air supply and exhaust air by being exposed to the air supply and exhaust passages. Remove dust, harmful ingredients, etc.

At this time, a means for stably maintaining the filter is required at the outlet side of the filter supply section and the inlet side of the waste filter accommodation section so as to keep the filter stable against the supply and exhaust air flows. As the filter holding means, the outlet side of the case 13 of the filter supply unit 11 and the inlet side of the case 13 of the waste filter accommodating portion 12 can be seen in the enlarged view of FIG. 6. Solenoid pressing devices 30 are provided at locations.

The pressing device is typically a rod 31 is advanced by an internal spring and a pressing plate 32 is provided at the end of the rod to press and fix the filter against the inner surface of the case. As the rod is retracted by the electromagnet, the pressing plate is retracted to allow the filter 25 to be transported when the support plate 17 of the waste filter receptacle is driven by a motor so that a new filter is supplied to the filter feeder 11 and the waste filter. To be exposed to air passages between the receptacles 12.

At this time, in order to recover the waste filter from the waste filter accommodating part 12 and to transfer the filter by an appropriate length so that a new filter is disposed in the air passages from the filter supply part 11, the filter has an upper end at an interval spaced by a unit conveying length. A hole 35 is drilled in the hole, and an optical sensor 36 is installed at the outlet of the filter supply unit 11 so that the motor and the pressing device operate in response to the signal of the optical sensor.

A process of automatically replacing the filter in the filter device as described above will be described. In the filter device of the present invention, the motor of the waste filter accommodating part 12 is programmed to operate intermittently at every filter replacement cycle that is previously calculated according to the installation environment of the filter device. In addition, when the motor is operated, power is applied to the filter pressing device, and the filter is pressed by the pressing plate to release the fixed state, thereby enabling the filter to be moved.

Accordingly, as the motor is driven, the support shaft portion 19 is rotated together with the support plate of the waste filter accommodating portion so that the waste filter is wound around the support shaft portion, and at this time, the support shaft portion of the filter supply portion 11 is supported by the tension of the waste filter. In (18), the new filter is released and drawn out, and when the perforated hole reaches the filter upper end at a predetermined interval, that is, enough to cover the width of the air supply passage and the exhaust passage, it is detected by the optical sensor. The motor is stopped in response to the output signal and the power applied to the plurality of pressing devices provided on the inlet and outlet sides of the cases is cut off, and the filter is pressed and fixed by the pressing plate with its own spring elastic force to replace the filter by the administrator separately. The new filter is automatically replaced without any work.

7 shows a modified example of the pressing device of the present invention, the filters (41, 42) provided in the filter receiving portion of the present invention may be arranged in a state in which the pre-filter, carbon filter, photocatalyst filter, etc. are stacked together. In this case, since the filters are preferably spaced apart at regular intervals in the air passages, a splitter 40 for dividing the passages is fixed to the bottom of the case at the inlet side and the outlet side of the filter supply part and the waste filter accommodating part cases. And the filters drawn out in the state of being stacked in a plurality of layers in the filter supply unit are drawn out in a separated state through the divided passages, and the respective rods of the pressing device are fixed by pressing the respective filters in the respective passages. The plurality of pressing plates 43 and 44 are spaced apart from each other so as to be spaced apart from each other. The number of divided passages depends on the type of filter accommodated in a stacked form in the filter receiving portion.

According to the present invention, the filter accommodating portion includes a filter supply portion and a waste filter accommodating portion for accommodating a filter of a length that can be replaced by a number of times sufficient to sufficiently cover the life span of the heat exchange element, According to this, the support shaft for accommodating the waste filter is rotated by the motor which is operated at a predetermined cycle so that the waste filter is recovered, and the filter is pulled out from the filter supply by the tension force so that the filter is disposed in the air supply passage and the exhaust passage of the heat exchanger. By providing the filter device, the waste filter is automatically recovered at a predetermined cycle and a new filter of the filter supply is automatically placed in the air passage, thereby reducing the labor costs such as labor cost due to manual filter replacement during the life of the conventional heat exchange element. The burden is relieved so that the use of the total heat exchanger can be generalized. There are advantages and dust that can keep more clean the environment by hazardous substances, etc. of buildings and houses.

1 is a schematic exploded view of a general heat exchanger configuration.

Figure 2 is a schematic perspective view of a filter device for a total heat exchanger according to the present invention.

3 is a cross-sectional view of FIG. 2.

4 is an exploded perspective view of the filter support of FIG. 3.

5 is a longitudinal cross-sectional view of FIG. 2;

6 is an enlarged perspective view of portion A of FIG. 3;

7 is a partially enlarged perspective view illustrating a modification of the filter fixing part of FIG. 6.

Claims (5)

In the filter device for filtering harmful substances in the air flowing through the heat transfer element disposed adjacent to the heat transfer element for heat exchange, the filter supply unit 11 for accommodating a new filter unused, and is ventilated from the filter supply unit A waste filter accommodating part 12 disposed to be spaced apart by a distance corresponding to the width of the air passage and winding the used filter for a predetermined time, and the case 13 of each of the filter supply part 11 and the waste filter accommodating part 12. And a filter support 16 for supporting a filter that is rotatably disposed and wound therein, wherein the waste filter exposed to the air passage and used for a predetermined period of time is wound around the waste filter housing while the new filter of the filter supply unit is pulled out with the tension. Filter apparatus for a total heat exchanger comprising a filter feeder to make. 2. The filter support according to claim 1, wherein the filter support has a support plate (17) in a disc state for supporting a filter at a lower end thereof, and a support shaft (18, 19) which is provided so as to be coupled to each other by extending above the support plate. Filter device for a total heat exchanger comprising a. 2. The filter feeder according to claim 1, wherein the filter feeder includes a motor formed on an outer circumferential surface of the support plate 17 of the waste filter accommodating part, and meshes with the gear of the output shaft to rotate the support plate. And a new filter is released from the support shaft portion of the filter supply portion and transferred to the air passage by the tension of the waste filter wound around the support shaft portion by rotation of the support plate. According to claim 1, wherein the support shaft portion 18 is fixed to the upper surface of the support plate 17, while the support shaft portion 19 is coupled to the support shaft portion 18 by a fastening means such as a screw to support the support shaft portion for winding the filter And an end of the filter disposed therebetween when the supporting shaft portions (18, 19) are coupled to be fixed together. 2. The filter according to claim 1, wherein perforated holes are formed in the filter at predetermined length intervals so that a predetermined length of the filter between the filter supply portion and the waste filter accommodation portion is withdrawn from the filter supply portion when the filter is replaced. An optical sensor for detecting a position and outputting a signal is provided, and the filter device for an electric heat exchanger is configured to stop a power supply to a pressing device and to stop a motor in response to an output signal of the optical sensor.