WO2023218566A1 - 除湿機 - Google Patents

除湿機 Download PDF

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Publication number
WO2023218566A1
WO2023218566A1 PCT/JP2022/019971 JP2022019971W WO2023218566A1 WO 2023218566 A1 WO2023218566 A1 WO 2023218566A1 JP 2022019971 W JP2022019971 W JP 2022019971W WO 2023218566 A1 WO2023218566 A1 WO 2023218566A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
air
main
air passage
suction port
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2022/019971
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
優太 ▲高▼橋
好孝 明里
英雄 柴田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Home Appliance Co Ltd
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Home Appliance Co Ltd
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Home Appliance Co Ltd, Mitsubishi Electric Corp filed Critical Mitsubishi Electric Home Appliance Co Ltd
Priority to JP2024520148A priority Critical patent/JPWO2023218566A1/ja
Priority to PCT/JP2022/019971 priority patent/WO2023218566A1/ja
Publication of WO2023218566A1 publication Critical patent/WO2023218566A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/0358—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing with dehumidification means

Definitions

  • the present disclosure relates to a dehumidifier.
  • the dehumidifier disclosed in Patent Document 1 includes a suction port and a dehumidifying means having a heat exchanger.
  • An air cleaning filter is disposed in an air passage that communicates the suction port with the heat exchanger so as not to cover a portion of the heat exchanger.
  • a shutter that opens and closes the portion of the air path that is not covered by the filter is provided. When the shutter is opened, a large amount of airflow is taken into the heat exchanger without passing through the filter, resulting in dehumidification operation that focuses on dehumidification.
  • the shutter is closed, most of the airflow passes through the filter and the airflow purified by the filter is taken into the heat exchanger, resulting in an air cleaning operation that focuses on air cleaning. In this way, the operation mode is switched between dehumidification operation and air purification operation by opening and closing the shutter.
  • An object of the present disclosure is to provide a dehumidifier that can prevent dust from directly flowing into a heat exchanger while suppressing a decrease in dehumidifying ability during dehumidifying operation.
  • a dehumidifier includes a casing having an inlet and an outlet, a blower for generating an airflow from the inlet to the outlet, and a dehumidifier for removing moisture from the air sucked from the inlet.
  • a dehumidifying means having a heat exchanger, a main filter for air purification disposed inside the housing, and a main unit through which air sucked from the suction port passes through the main filter and reaches the heat exchanger.
  • a shutter that can be opened and closed between the main filter and the bypass air passage is provided with a sub-filter that has a lower particle collection rate and lower pressure loss than the main filter.
  • the sub-filter since the sub-filter is provided in the bypass air path, it is possible to prevent dust from directly flowing into the heat exchanger during dehumidification operation when the bypass air path is opened. Furthermore, by using a sub-filter that has a lower particle collection rate and lower pressure loss than the main filter, it is possible to suppress a decrease in air volume during dehumidification operation, and as a result, a decrease in dehumidification capacity can be suppressed. I can do it.
  • FIG. 2 is a rear view of the dehumidifier according to the first embodiment.
  • 2 is a longitudinal cross-sectional view of the dehumidifier according to Embodiment 1 taken along line AA in FIG. 1.
  • FIG. 2 is a cross-sectional view of the dehumidifier according to Embodiment 1 taken along line BB in FIG. 1.
  • FIG. 2 is a cross-sectional view showing the dehumidifier according to the first embodiment with a shutter opening a bypass air path.
  • FIG. 3 is a cross-sectional view showing a dehumidifier according to a second embodiment.
  • FIG. 7 is a cross-sectional view showing a dehumidifier according to a third embodiment.
  • FIG. 1 is a rear view of a dehumidifier 1 according to the first embodiment.
  • 2 is a longitudinal cross-sectional view of the dehumidifier 1 taken along line AA in FIG. 1
  • FIG. 3 is a cross-sectional view of the dehumidifier 1 taken along line BB in FIG.
  • the AA line and the BB line are set to pass through the rotation center of a sirocco fan 32, which will be described later.
  • FIG. 4 is a cross-sectional view showing the dehumidifier 1 in a state where a shutter 5, which will be described later, opens a bypass air passage 44.
  • the front-rear direction of the dehumidifier 1 is the X-axis direction
  • the width direction is the Y-axis direction or the left-right direction
  • the up-down direction perpendicular to the X-axis direction and the Y-axis direction is the Z-axis direction.
  • the left side in FIG. 2 is the front side and the front side
  • the right side is the rear side and the back side.
  • the dehumidifier 1 includes a case 10 as a housing.
  • the case 10 includes a front case 10a forming a front part and a rear case 10b forming a back part.
  • a self-supporting box-shaped case 10 is formed by fixing the front case 10a and the rear case 10b with, for example, screws in a state in which they are aligned longitudinally.
  • a first suction port 11, a second suction port 12, and an air outlet 13 are formed in the case 10.
  • the first suction port 11 and the second suction port 12 are openings for taking air into the case 10 from the outside.
  • the air outlet 13 is an opening for sending air from the inside of the case 10 to the outside.
  • the first suction port 11 and the second suction port 12 are formed in a suction port cover 14 that is detachably provided on the rear case 10b. That is, among the plurality of openings opened in the suction port cover 14, the opening facing the main air passage 43 described later corresponds to the first suction port 11, and the opening facing the bypass air passage 44 described later corresponds to the second suction port 11. Corresponds to mouth 12.
  • the case where it is comprised with the first and second suction ports 11 and 12 is demonstrated as an example, it may be comprised with a single suction port.
  • the suction port cover 14 has openings 14a, 14b, 14c smaller than the first and second suction ports 11, 12 and a hose connection hole 14d formed around the first and second suction ports 11,12.
  • a gas sensor Sg is arranged inside the rear case 10b at a position facing the opening 14a, and the opening 14a is a suction port.
  • a dust sensor Sd is arranged at a position facing the openings 14b and 14c, with the opening 14b serving as a suction port and the opening 14c serving as a discharge port.
  • an opening (not shown) serving as a suction port is also formed on the side surface of the rear case 10b, and a humidity sensor (not shown) is arranged at a position facing the opening.
  • the dust sensor Sd measures the amount or concentration of dust contained in indoor air, and has the ability to detect particles of, for example, 0.1 ⁇ m.
  • the gas sensor Sg measures the odor of indoor air.
  • the humidity sensor Sm measures the humidity of indoor air.
  • a drain hose (not shown) connected to a drain pipe 19b (described later) is inserted through the hose connection hole 14d, so that drain water can be drained out of the dehumidifier 1.
  • the air outlet 13 is formed on the upper surface of the front case 10a.
  • a louver 15 is provided near the air outlet 13 for adjusting the direction in which air is sent out from the air outlet 13.
  • a motor (not shown) for driving the louver 15 is attached to the louver 15 .
  • An operation display section 16 is provided at the top of the case 10.
  • An operation display board which will be described later, is attached to the operation display section 16.
  • the operation display section 16 includes a switch for the user to operate the dehumidifier 1, a display section for displaying the operating state and mode of the dehumidifier 1, an audio notification section, and the like.
  • the switches include, for example, an operation switch that starts/stops the operation of the dehumidifier 1, an operation mode changeover switch that changes the operation mode, and the like.
  • the operation mode is configured to be switchable between a dehumidifying operation that emphasizes dehumidification and an air purifying operation that emphasizes air purification using an operation mode changeover switch.
  • the control means Cm which will be described later, may be configured to control switching of the operating mode based on the humidity measured by the humidity sensor Sm.
  • a base 17 is provided at the bottom of the case 10, and swivel casters 17a, which are wheels for moving the dehumidifier 1, are provided at the four corners of the base 17. If the dehumidifier 1 is not to be moved, the swivel casters 17a may not be provided.
  • a water storage tank 18 is housed on the base 17 in a positioned manner.
  • a front panel 18a which constitutes a part of the front case 10a, is fixed to the front surface of the water storage tank 18. When the water storage tank 18 becomes full, the water storage tank 18 can be pulled forward together with the front panel 18a, and the drain water in the water storage tank 18 can be discarded.
  • a drain water receiver 19 is arranged above the water storage tank 18.
  • a drain water stop 19a is rotatably attached to the drain water receiver 19 to temporarily stop drain water from draining into the water storage tank 18, and is normally biased by a spring in the water stop direction. Then, with the water storage tank 18 housed in the storage position, the drain water can be drained into the water storage tank 18 by rotating the drain water stop 19a in a direction opposite to the negative direction of the spring.
  • a dehumidifying means 2 is arranged above the drain water receiver 19.
  • the dehumidifying means 2 for example, a heat pump type can be used.
  • the dehumidifying means 2 includes a heat exchanger 20, a compressor 21 that compresses the refrigerant, and a pressure reducing device (not shown) that reduces the pressure of the refrigerant.
  • the heat exchanger 20 includes an evaporator 20a, a main condenser 20b, a sub-condenser 20c, and a heat exchanger tube 20d.
  • the evaporator 20a is configured to condense moisture contained in the air passing through the evaporator 20a through heat exchange with the refrigerant circulating from the compressor 21, that is, to generate dew condensation and dehumidify the air.
  • Water droplets condensed on the evaporator 20a drip into the drain water receiver 19, and are drained into the water storage tank 18 through the drain pipe 19b of the drain water receiver 19.
  • the air dehumidified by passing through the evaporator 20a is returned to room temperature in the main condenser 20b and the sub-condenser 20c, and then sent out from the air outlet 13 via a scroll space 35, which will be described later.
  • a drainage hose (not shown) may be directly connected to the drainage pipe 19b. In this case, continuous drainage is possible by inserting the drainage hose into the hose connection hole 14d and pulling it out of the case 10.
  • a blowing means 3 is arranged in front of the heat exchanger 20.
  • the blowing means 3 includes a fan motor 31 and a sirocco fan 32.
  • the sirocco fan 32 is arranged in a scroll space 35 defined by a casing 33 and a partition plate 34.
  • the partition plate 34 has a circular opening as a bellmouth-shaped hole 34a, so that the air that has passed through the condenser 20c can be smoothly sucked in. Air sucked in from the bellmouth-shaped hole 34a by the rotation of the sirocco fan 32 is discharged from the air outlet 13 located above the casing 33, and the air blowing direction can be changed by the louver 15.
  • a heat exchanger holder 22 is arranged above the heat exchanger 20 to hold the heat exchanger 20 and also function as a power supply board case.
  • a power supply board unit 23 is provided on the heat exchanger holder 22.
  • the power supply board unit 23 includes a power supply board and a control board (not shown).
  • the power supply board unit 23 and the operation display board 24 constitute the control means Cm.
  • the control means Cm controls the driving of a motor for the louver 15, a compressor 21, a fan motor 31, a stepping motor (not shown) for the shutter 5, which will be described later, and the like.
  • the control means Cm also controls the display on the operation display section 16.
  • An air passage forming frame 41 is attached to the rear case 10b so as to face the first and second suction ports 11 and 12.
  • two air passage partition plates 42 that are longitudinal in the vertical direction are arranged with an interval in the left and right directions. These two air passage partition plates 42 partition the inside of the air passage forming frame 41 into a main air passage 43 and a bypass air passage 44, which will be described later. That is, the two air passage partition plates 42 and the upper and lower walls of the air passage forming frame 41 define a main air passage 43 at the center of the air passage forming frame 41 in the left-right direction.
  • Two bypass air passages 44 are defined by each air passage partition plate 42 and the upper wall, lower wall, and side wall of the air passage forming frame 41, respectively.
  • the main air passage 43 and the bypass air passage 44 separated by the air passage partition plate 42 are adjacent to each other on the left and right, so that the main air passage 43 and the bypass air passage 44 can be configured compactly.
  • the dehumidifier 1 can be downsized.
  • the number and position of the bypass air passages 44 are not limited to these, and the bypass air passages 44 may be provided only on either the left or right side of the main air passage 43, or the bypass air passages 44 may be provided adjacent to the upper and lower sides of the main air passage 43.
  • a channel 44 may also be provided.
  • the main air passage 43 and the bypass air passage 44 do not need to be adjacent to each other.
  • a plurality of intake ports may be provided, each being divided into an intake port cover in which the first intake port 11 is opened and an intake port cover in which the second intake port 12 is opened.
  • a main filter 45 for air purification is removably arranged in the main air passage 43.
  • the main filter 45 includes, for example, a HEPA filter 45a and a deodorizing filter 45b.
  • the HEPA filter 45a has a particle collection rate of 99.97% or more for particles with a particle size of 0.3 ⁇ m, and has an initial pressure loss. This is an air filter with a performance of 245 Pa or less.
  • a ULPA filter that has a particle collection rate of 99.99% or more for particles with a particle diameter of 0.15 ⁇ m and an initial pressure loss of 245 Pa or less. Since these HEPA filter 45a and ULPA filter can collect fine dust in the air, they have a larger pressure loss than the sub-filter 46 described later.
  • the deodorizing filter 45b for example, an activated carbon filter can be used.
  • a sub-filter 46 is removably arranged in the bypass air passage 44.
  • the sub-filter 46 is a filter that has a lower particle collection rate and a smaller pressure loss than the main filter 45.
  • a pre-filter that is usually placed upstream of a high-performance filter such as a HEPA filter can be used.
  • a Filledon filter a filter made of honeycomb-shaped PVDC fibers or PP fibers, a Saran rock filter, etc. can be used.
  • a MEPA filter having a particle collection rate of 50% or more and 95% or less for particles having a particle size of 0.4 ⁇ m or 0.7 ⁇ m can be used. Since the sub-filter 46 has a lower particle collection rate than the main filter 45, it has a smaller pressure loss than the main filter 45.
  • a lattice portion 47 is arranged behind the deodorizing filter 45b with an interval.
  • the evaporator 20a of the heat exchanger 20 is arranged behind the grid section 47 with a gap therebetween.
  • the airflow flowing through the main air passage 43 and the airflow flowing through the bypass air passage 44 are configured to merge in the space before and after the grid portion 47, that is, on the upstream side of the evaporator 20a. Since the grid portion 47 has the same cross-sectional area as the evaporator 20a, it is possible to uniformly send the airflow that merges on the upstream side of the evaporator 20a to the evaporator 20a.
  • the bypass air passage 44 is provided with a shutter 5 that can open and close the bypass air passage 44.
  • the shutter 5 includes a plate-shaped shielding wall 51 that is elongated in the vertical direction, an upper plate 52 and a lower plate 53 that are fan-shaped in a plan view and are provided at the upper and lower ends of the shielding wall 51, respectively, and an upper plate that is provided on the upper surface of the upper plate 52. It has a rotation shaft 52a and a lower rotation shaft 53a provided on the lower surface of the lower plate 53.
  • the upper rotation shaft 52a and the lower rotation shaft 53a are inserted and fitted into bearings (not shown) provided on the upper and lower walls of the air passage forming frame 41, respectively.
  • the shutter 5 is rotatably supported around the rotation shafts 52a and 53a.
  • a stepping motor (not shown) is directly attached to the upper rotation shaft 52a.
  • the shielding wall 51 is rotated to a closed position in which it shields the bypass air passage 44 and blocks the flow of air in the bypass air passage 44.
  • the shielding wall 51 opens the bypass air passage 44 and rotates to an open position in which airflow through the bypass air passage 44 is allowed.
  • the shutter 5 can also be rotated to an intermediate position between the closed position and the open position.
  • the control means Cm selects the dehumidifying operation mode when the humidity measured by the humidity sensor Sm is, for example, 50% or more, and selects the air purifying operation mode when it is less than 50%.
  • the control means Cm drives the stepping motor for the shutter 5 to rotate the shutter 5 to the closed position, thereby blocking the bypass air path 44. Subsequently, the control means Cm drives the fan motor 31 to rotate the sirocco fan 32 at a predetermined rotation speed. Then, almost all of the air sucked in from the first suction port 11 passes through the main air passage 43 and is purified by the main filter 45. Therefore, the air blown from the outlet 13 becomes clean air.
  • the control means Cm drives the stepping motor to rotate the shutter 5 to the open position, thereby opening the bypass air passage 44. Subsequently, the control means Cm drives the fan motor 31 to rotate the sirocco fan 32 at a predetermined rotation speed, and also drives the compressor 21. Then, air containing moisture is sucked in from the second suction port 12. The air sucked in from the second suction port 12 passes through a sub-filter 46 arranged in the bypass air path 44. As a result, the air from which dust has been removed by the sub-filter 46 flows into the heat exchanger 20.
  • the humid air is dehumidified by condensation in the evaporator 20a.
  • the dehumidified air is returned to room temperature in the main condenser 20b and the sub-condenser 20c, and then is discharged from the air outlet 13 via the scroll space 35.
  • the control means Cm by driving the step motor for the louver 15 by the control means Cm, it is possible to change the angle of the louver 15 in the vertical direction. As a result, air can be blown upward to generate circulating airflow within a room to dehumidify the room, or laundry can be blown with air to dry it.
  • the drain water stopper 19a closes the drain port of the drain pipe 19b and prevents the drain water from being drained. Furthermore, when a drain hose is attached to the drain pipe 19b, drain water passes through the drain hose and is drained out of the case 10.
  • the sub-filter 46 since the sub-filter 46 is provided in the bypass air passage 44, in the dehumidification operation mode in which the bypass air passage 44 is opened, dust contained in the airflow flowing through the bypass air passage 44 is captured by the sub-filter 46. Therefore, dust in the airflow is prevented from directly flowing into the heat exchanger 20. Moreover, by using a sub-filter 46 that has a lower particle collection rate and a smaller pressure loss than the main filter 45, it is possible to suppress a decrease in the amount of air flowing into the heat exchanger 20 in the dehumidifying operation mode, and as a result, , it is possible to suppress a decrease in dehumidification ability.
  • the shielding wall 51 can be stored in the storage space 44a when the shutter 5 is rotated to the open position. Therefore, in combination with the use of the sub-filter 46 which has a smaller pressure loss than the main filter 45, the pressure loss in the bypass air passage 44 can be reduced, and the reduction in air volume can be further suppressed.
  • FIG. 5 is a cross-sectional view showing the dehumidifier 1 according to the second embodiment with the shutter 5 open.
  • the sub-filter 46 is arranged so as to also straddle the main air passage 43. That is, one sub-filter 46 is arranged in the bypass air passage 44 on one side in the left-right direction, the main air passage 43, and the bypass air passage 44 on the other side in the left-right direction.
  • the length of the air passage partition plate 42 in the front-rear direction is determined to be shorter than the length in the first embodiment by the thickness of the sub-filter 46.
  • the main filter 45 is arranged downstream of the sub-filter 46.
  • the sub filter 46 is arranged between the main filter 45 and the suction port cover 14.
  • the present embodiment in addition to the effects obtained in the first embodiment, since only one sub-filter 46 is required, the number of parts can be reduced. Furthermore, since the sub-filter 46 disposed in the main air passage 43 also serves as a pre-filter for the main filter 45, clogging of the main filter 45 can be suppressed, and the maintenance cycle of the main filter 45 can be extended. can do.
  • FIG. 6 is a cross-sectional view showing the dehumidifier 1 according to the third embodiment with the shutter 5 open.
  • a combination filter 460 that integrates the HEPA filter 45a and the sub-filters 46 on both sides in the left and right direction is used. are placed.
  • the front and rear lengths of the air passage partition plate 42 may be shortened by the thickness of the sub-filter 46.
  • the number of parts can be reduced by integrating the HEPA filter 45a and the two sub-filters 46.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Gases (AREA)
PCT/JP2022/019971 2022-05-11 2022-05-11 除湿機 Ceased WO2023218566A1 (ja)

Priority Applications (2)

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JP2024520148A JPWO2023218566A1 (https=) 2022-05-11 2022-05-11
PCT/JP2022/019971 WO2023218566A1 (ja) 2022-05-11 2022-05-11 除湿機

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Application Number Priority Date Filing Date Title
PCT/JP2022/019971 WO2023218566A1 (ja) 2022-05-11 2022-05-11 除湿機

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WO2023218566A1 true WO2023218566A1 (ja) 2023-11-16

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03168538A (ja) * 1989-11-28 1991-07-22 Matsushita Seiko Co Ltd 空気清浄装置
JP2004211913A (ja) * 2002-12-26 2004-07-29 Sanyo Electric Co Ltd 除湿機
WO2019043985A1 (ja) * 2017-08-30 2019-03-07 シャープ株式会社 空気調和機

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06257793A (ja) * 1993-03-05 1994-09-16 Kubota Corp 気体清浄装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03168538A (ja) * 1989-11-28 1991-07-22 Matsushita Seiko Co Ltd 空気清浄装置
JP2004211913A (ja) * 2002-12-26 2004-07-29 Sanyo Electric Co Ltd 除湿機
WO2019043985A1 (ja) * 2017-08-30 2019-03-07 シャープ株式会社 空気調和機

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