JP5898513B2 - Desiccant type rotor fan frame - Google Patents

Description

  The present invention relates to a desiccant rotor in which an adsorbent and a hygroscopic agent (hereinafter referred to as “desiccant”) of a desiccant-type ventilation fan are adapted to a rotary type, and a desiccant used in a sensible heat rotor in which a sensible heat exchanger is adapted to a rotary type. The present invention relates to a rotor frame for a ventilation fan.

  Desiccant ventilation fans use a desiccant to adjust the indoor humidity during ventilation, and at the same time adjust the indoor temperature with a sensible heat exchanger in order to reduce indoor temperature changes during ventilation. The desiccant exhaust fan has an air supply passage through which outdoor air passes from the outside to the inside and an exhaust passage through which indoor air passes from the inside to the outside. Moisture is transferred between the air supply passage and the exhaust passage. By performing the desiccant, the indoor humidity is adjusted, and at the same time, the heat is transferred between the air supply passage and the exhaust passage by the sensible heat exchanger, thereby adjusting the indoor temperature.

  In order to move moisture between the air supply passage and the exhaust passage by the desiccant, the desiccant is impregnated or mixed with a fibrous material such as paper, and the air passes through the thin fibrous plate of the fibrous material. Are formed so as to form a so-called honeycomb structure, which is an aggregate of holes having a structure in which a large number of triangular prisms (corrugated), square columns, and hexagonal columns are arranged without gaps. The honeycomb structure is disposed so as to straddle both the air supply passage and the exhaust passage, and the moisture is moved by rotating the honeycomb structure. For this reason, it is processed into a so-called disk shape having two circular surfaces and side surfaces that are continuous from the outer edges of the two circular surfaces so as to be suitable for rotating the honeycomb structure. This rotary desiccant is called a desiccant rotor.

  Further, in the sensible heat exchanger, in order to transfer heat between the air supply passage and the exhaust passage, the aforementioned honeycomb structure is formed of a thin metal plate such as aluminum or copper alloy, and the air supply passage and It arrange | positions so that it may straddle both of an exhaust passage, and heat is moved by rotating this. A sensible heat exchanger processed into a disk shape so as to be suitable for this rotation is called a sensible heat rotor.

  The desiccant rotor and the sensible heat rotor require maintenance because the outdoor air and the indoor air pass through a honeycomb structure which is an aggregate of small holes, and the desiccant rotor and the sensible heat rotor are rotated by an electric motor. In order to facilitate maintenance, the desiccant rotor and the sensible heat rotor are placed in a box-shaped desiccant-type rotor fan rotor frame to facilitate maintenance.

JP 2008-151462 A

  The present applicant has applied for an invention of a desiccant air conditioner and a seal member in Japanese Patent Application Laid-Open No. 2008-151462. The invention according to Patent Document 1 relates to a disc-shaped desiccant rotor and a desiccant rotor frame in which the disc-shaped desiccant rotor is housed, and relates to a packing that is in sliding contact with the end surface of the disc-shaped desiccant rotor.

  In order to efficiently move moisture or heat by allowing air to pass through like a desiccant rotor or sensible heat rotor, it is necessary for the passing air to pass through the desiccant rotor or sensible heat rotor without leakage. However, since the desiccant rotor or the sensible heat rotor rotates, if the packing is not provided in the space where the desiccant rotor or the sensible heat rotor is accommodated and the desiccant type exhaust fan rotor frame on the bearing side is provided, the capacity is greatly reduced. Further, when the packing is provided, there is a problem that the resistance of the rotating rotor is caused and a larger driving force is required.

  In order to solve the above problems, the present invention takes the following technical means.

The rotor frame for a desiccant type ventilation fan according to the first aspect of the invention (hereinafter, simply referred to as “rotor frame”) has two sensible heats composed of a circular surface and outer peripheral side surfaces that are continuous with each other from the outer edges of the two circular surfaces. A rotor or a desiccant rotor is included, a circular surface side wall of a predetermined length projecting from the entire circumference of the outer edge toward the center side of the circular surface with a predetermined gap from the entire circumference, and a circular shape connected to the circular surface side wall A guide portion that rises to a predetermined height, and a side wall of a predetermined length that protrudes from the entire periphery of the outer edge so as to overlap the outer peripheral side surface with a predetermined gap, and the circular surface side wall, The side wall and the guide portion are connected in a crank shape in cross section .

  A rotor frame according to a second invention is divided into a left rotor frame and a right rotor frame in the first invention, and the left rotor frame and the right rotor frame have the same shape, and the left rotor frame and the right rotor frame are separated from each other. Composed by combining.

  Having the technical means as described above has the following effects.

According to the first invention, the rotor frame includes a sensible heat rotor or a desiccant rotor including two circular surfaces and outer peripheral side surfaces that are continuous with each other from the outer edges of the two circular surfaces, and the entire circumference of the outer edge. A circular surface side wall of a predetermined length projecting from the circular surface toward the center side of the circular surface with a predetermined gap, and overlapping the outer peripheral side surface with a predetermined gap from the entire circumference of the outer edge Because it has a side wall of a predetermined length that protrudes to
Even if no packing is provided between the desiccant rotor or sensible heat rotor that needs to rotate and the rotor frame that houses the desiccant rotor or sensible heat rotor and becomes the bearing side, the inside of the rotor frame does not pass through the rotor. Less air can pass through.

  According to a second invention, using the first invention, the rotor frame is divided into a left rotor frame and a right rotor frame, and the left rotor frame and the right rotor frame have the same shape, and the left rotor frame And the right rotor frame are combined to reduce the manufacturing cost and facilitate assembly.

It is a schematic diagram of the desiccant ventilation fan provided with the rotor frame which concerns on Example 1 of this invention. It is a component block diagram of the rotor frame which concerns on Example 1 of this invention. It is an external view of the rotor frame which concerns on Example 1 of this invention. It is sectional drawing of the rotor frame which concerns on Example 1 of this invention.

  Embodiments for carrying out the invention will be specifically described with reference to the drawings.

  An outline of a desiccant-type ventilation fan in which a rotor frame containing a desiccant rotor or a sensible heat rotor of the present invention is used will be described with reference to FIG.

  The desiccant type ventilation fan 70 includes a first air passage 72 through which outdoor air flows from the outside toward the inside by the first blower 71 and a second air flow through which the indoor air flows from the inside to the outside by the second blower 76. It consists of the air passage 77. The first air passage 72 and the second air passage 77 have a structure that maintains airtightness so that outdoor air and indoor air are not mixed in the middle. A rotor frame 10 in which the desiccant rotor 30 is accommodated and a rotor frame 10 in which the sensible heat rotor 40 is accommodated are respectively provided orthogonal to the first air path 72 and the second air path 77. Each rotor frame 10 is provided with an electric motor 50 which is a driving means for rotating the desiccant rotor 30 or the sensible heat rotor 40.

  Note that the first air passage 72 and the outer periphery of the rotor frame 10 for the desiccant rotor 30 and the rotor frame 10 for the sensible heat rotor 40 that are provided so as to straddle the first air passage 72 and the second air passage 77 A structure that slides and attaches to the second air passage 77 is provided, and indoor air and outdoor air from the outer periphery of the rotor frame 10 do not pass through the desiccant rotor 30 and the sensible heat rotor 40, and the first air passage 72. And it has the structure which prevents passing the 2nd air path 77. FIG.

  When the outdoor air passing through the first air passage 72 is dry and the indoor air passing through the second air passage 77 contains dampness compared to the outdoor air, the desiccant rotor 30 is second. The moisture of the indoor air passing through the air passage 77 is adsorbed, and when the adsorbed portion is rotated to move to the first air passage 72, it is released to the outdoor air passing through the first air passage 72. Therefore, the moisture from the indoor air accompanying the ventilation of the desiccant-type ventilation fan 70 is prevented, and as a result, it functions as a moisturizing function.

  Conversely, when the outdoor air passing through the first air passage 72 contains moisture and the indoor air passing through the second air passage 77 is dry compared to the outdoor air, the desiccant rotor 30 is Moisture in outdoor air passing through the first air passage 72 is adsorbed, and the adsorbed portion is rotated to move to the second air passage 77 and released to indoor air passing through the second air passage 77. Thus, it is possible to prevent the humidity of the indoor air from being increased due to the ventilation of the desiccant-type ventilation fan 70, and to function as a dehumidifying function as a result.

  In addition, when releasing the water | moisture content of the desiccant rotor 30, it is necessary to raise the temperature of the air which passes. Generally, a heating means (not shown) such as a heater is provided on the upstream side of the air flow of the desiccant rotor 30.

  When the outdoor air passing through the first air passage 72 is cold and the indoor air passing through the second air passage 77 is warmer than the outdoor air, the sensible heat rotor 40 is moved to the second air passage 77. Desiccant type by absorbing the heat of the indoor air that passes through and moving to the first air passage 72 by rotating the absorbed portion to dissipate heat to the outdoor air that passes through the first air passage 72 It prevents the temperature of the indoor air from decreasing due to the ventilation of the ventilation fan 70. Conversely, when the outdoor air passing through the first air passage 72 is warm and the indoor air passing through the second air passage 77 is cooler than the outdoor air, the sensible heat rotor 40 is moved to the first air passage 72. Desiccant ventilation fan by absorbing the heat of outdoor air passing through and moving to the second air passage 77 by rotating the absorbed portion and radiating heat to the indoor air passing through the second air passage 77 Prevents indoor air temperature rise with 70 ventilation.

  Electricity is supplied to the first blower 71, the second blower 76, the electric motor 50 of the desiccant rotor 30 and the sensible heat rotor 40, and the drive is controlled by a control board 79 and an operation device (not shown). ).

  The configuration of the rotor frame 10 and the desiccant rotor 30 or sensible heat rotor 40 housed in the rotor frame 10 will be described with reference to FIGS.

  The desiccant portion 31 of the desiccant rotor 30 is formed by impregnating or mixing a fibrous material such as paper with a desiccant such as a polymer-based absorbent, silica gel, or zeolite, and the fibrous material is made into a thin plate. A honeycomb structure in which a large number of passing triangular columns, quadrangular columns, hexagonal columns and the like are arranged without gaps is formed into a disk shape. In addition to the desiccant part 31, the desiccant rotor 30 is attached to the center part of the desiccant part 31 with a shaft hole 35 so as to be suitable for rotation, and the electric motor 50 is attached to the outer periphery of the desiccant part 31. A peripheral holder 60 is provided for receiving.

  The desiccant part 31, the center part holder 36, and the outer periphery holder 60 have the same thickness, and the desiccant rotor is obtained by attaching the center part holder 36 to the center part of the desiccant part 31 and the outer periphery holder 60 to the outer periphery of the desiccant part 31. 30 are integrally formed. The integrally formed desiccant rotor 30 has circular surfaces on both the left and right sides, and the circular surfaces are formed on the same plane. Note that the portion of the desiccant portion 31 of the two circular surfaces having side surfaces that are continuous with each other from the outer edges of the circular surfaces becomes the air passage surface 33. The desiccant rotor 30 is pivotally supported by a shaft 51 attached to the rotor frame 10 through a shaft hole 35 of the center holder 36.

  The sensible heat exchanger portion 41 of the sensible heat rotor 40 is formed of a thin metal plate such as aluminum or copper alloy to form the above-described honeycomb structure through which air passes, and is formed into a disk shape. In addition to the sensible heat exchanger section 41, the sensible heat rotor 40 has a center holder 36 having a shaft hole 35 attached to the center of the sensible heat exchanger section 41 so as to be suitable for rotation, and a sensible heat exchanger section. An outer peripheral holder 60 is provided which is attached to the outer periphery of 41 and receives the drive of the electric motor 50.

  The sensible heat exchanger part 41, the center part holder 36 and the outer periphery holder 60 have the same thickness, and the center part holder 36 is provided at the center part of the sensible heat exchanger part 41 and the outer periphery holder is provided on the outer periphery of the sensible heat exchanger part 41. When 60 is attached, the sensible heat rotor 40 is integrally formed. The integrally formed sensible heat rotor 40 has circular surfaces on both the left and right sides, and the circular surfaces are formed on the same plane. Note that the portion of the sensible heat exchanger portion 41 of two circular surfaces having side surfaces that are continuous with each other from the outer edges of the circular surfaces becomes the air passage surface 43. The sensible heat rotor 40 is supported by a shaft 51 attached to the rotor frame 10 through the shaft hole 35 of the center holder 36.

  The rotor frame 10 has a structure that can be divided into two parts, a right rotor frame 10a and a left rotor frame 10b. The right rotor frame 10a and the left rotor frame 10b are formed of synthetic resin. When the imaginary line AA illustrated on the right rotor frame 10a is rotated 180 degrees around the rotation axis, the shape of the left rotor frame 10b is obtained. It is formed as follows. In addition, what was originally divided into two has the same shape and need not be distinguished, but for convenience of explanation, the right side is called the right rotor frame 10a and the left side is called the left rotor frame 10b.

  The right rotor frame 10a and the left rotor frame 10b are quadrilaterals that partition the first air path 72 and the second air path 77 by being inserted at right angles to the first air path 72 and the second air path 77. The horizontal plates 12 and 13 and the vertical plates 14 and 15 are extended at right angles from the partition portion 11 and the square sides of the partition portion 11. The horizontal plates 12 and 13 and the vertical plates 14 and 15 are formed with means for hooking a right rotor frame 10a and a left rotor frame 10b, which will be described later, and outlets for wiring and the like.

  The partition 11 is provided with a circular hole 16 at the center. Since the bearing 17 is provided in the center of the hole 16, six support portions 18 and 19 are provided radially from the bearing 17 so as to divide the hole 16 into six pieces. Of the support portions 18 and 19, the support portion 19 extending so as to divide the partition portion 11 into two quadrangles is divided into a rotor frame 10 into a first air passage 72 and a second air passage 77. It also serves as a partition for the purpose.

  The hole 16 is located at a position corresponding to the air passage surface 33 of the desiccant rotor 30 or the air passage surface 43 of the sensible heat rotor 40. Further, a predetermined height (for example, 10 mm) is raised around the hole 16 in a circular shape, and the outdoor air of the first air passage 72 or the indoor air of the second air passage 77 is applied to the air passage surfaces 33 and 43. A guide 20 for guiding is provided. An annular portion within a predetermined range of the partition portion 11 from a place where the guide portion 20 and the partition portion 11 are connected becomes a circular surface side wall 11a. Further, a side wall 11b that is a wall projecting in a direction covering the outer periphery of the outer peripheral holder 60 is provided at a right angle from the circular surface side wall 11a.

  The horizontal plates 12 and 13 and the vertical plates 14 and 15 of the right rotor frame 10a and the left rotor frame 10b are provided with a plurality of square holes 21 and claws 22, respectively. Thus, the right rotor frame 10a and the left rotor frame 10b are hooked to form an integral rotor frame 10.

  A packing 52 is attached to the inner surfaces of the support portions 19 of the right rotor frame 10a and the left rotor frame 10b. Since the packing 52 is attached in a state where the rotor frame 10 straddles the first air passage 72 and the second air passage 77, the airtightness between the first air passage 72 and the second air passage 77 is secured. Used for. The reason why the packing 52 is necessary to partition the first air passage 72 and the second air passage 77 is that the first air blower 71 and the second air passage 77 are separately provided in the first air passage 72 and the second air passage 77. The air blower 76 is provided and the pressure loss before and after passing through the desiccant rotor 30 and the sensible heat rotor 40 is different, and the packing 52 provided between the first air passage 72 and the second air passage 77 is provided. This is because the pressure difference between the first air passage 72 side and the second air passage 77 at the four positions may increase.

  FIG. 3 is a view showing a case where the square hole 21 and the claw 22 are hooked and the right rotor frame 10a and the left rotor frame 10b are hooked to form an integral rotor frame 10. FIG. 4 is a cross-sectional view taken along a virtual plane B indicated by a dashed diagonal line in the drawing and viewed from the direction of the arrows in order to explain the positional relationship with the desiccant rotor 30 or the sensible heat rotor 40 in the rotor frame 10. I will explain it.

  Since the outer periphery holder 60 of the desiccant rotor 30 and the sensible heat rotor 40 is common, the desiccant rotor 30 and the sensible heat rotor 40 have the same positional relationship with respect to the rotor frame 10. For this reason. The desiccant rotor 30 will be described as an example, and description of the sensible heat rotor 40 will be omitted.

  4, the right rotor frame 10a covers the desiccant rotor 30 from the right side and the left rotor frame 10b from the left side. The space for accommodating the desiccant rotor 30 inside the rotor frame 10 determined by the engagement of the right rotor frame 10a and the left rotor frame 10b is the horizontal plates 12, 13 and the vertical plates 14, 14 of the right rotor frame 10a and the left rotor frame 10b, respectively. , 15 and 15 are in contact with each other (in FIG. 4, the horizontal plate 12 and the horizontal plate 13 are in contact with each other). Further, since the desiccant rotor 30 is pivotally supported by the respective bearings 17 of the right rotor frame 10a and the left rotor frame 10b, the positional relationship between the rotor frame 10 and the desiccant rotor 30 is constant.

  The two air passage surfaces 33a and 33b of the desiccant portion 31 and the side surfaces 61a and 61b of the outer peripheral holder 60 are the same plane. The circular surface formed by the air passage surface 33a and the side surface 61a and the circular surface formed by the air passage surface 33b and the side surface 61b from the entire circumference of the outer edge of the circular surface with a predetermined gap from the center side of the circular surface A circular surface side wall 11a having a predetermined length projecting toward the surface is provided.

  As a specific example of the predetermined gap, a case where the desiccant rotor 30 and the sensible heat rotor 40 have a diameter of 500 millimeters and a thickness of 60 millimeters will be described. The clearance C between the air passage surface 33a, the side surface 61a, and the circular surface side wall 11a forming the circular surface is, for example, 1.6 mm, and is maintained over the entire circumference of the air passage surface 33a and the side surface 61a forming the circular surface. It is configured. Similarly, the clearance C between the air passage surface 33b and the side surface 61b that form a circular surface and the inner surface of the circular surface side wall 11a is, for example, 1.6 mm on the entire circumference of the air passage surface 33b and the side surface 61b that form the circular surface. Configured to keep across.

  As a specific example of the predetermined length, D, which is the length of the circular surface side wall 11a, is an air passage surface that forms a circular surface of, for example, 15.5 millimeters together with the right rotor frame 10a and the left rotor frame 10b. 33a and the side surface 61a and the air passage surface 33b and the side surface 61b are configured to be maintained over the entire circumference.

  Further, a side wall 11b having a predetermined length is provided so as to protrude from the entire periphery of the outer peripheral side surface 62 of the outer peripheral holder 60 serving as the outer edge of the desiccant rotor 30 so as to overlap the outer peripheral side surface 62 with a predetermined gap. . As a specific example of the side wall 11b, the predetermined gap E is, for example, 6 millimeters, and the predetermined length F is, for example, 12 millimeters, and is maintained over the entire circumference of the outer peripheral side surface 62. Has been.

In FIG. 4, for example, assuming that indoor air is being flown by the second blower 76 in the direction of the arrow, the indoor air passes through the plurality of holes of the honeycomb structure of the air passage surface 33a, and from the air passage surface 33b. Will come out. In this case, compared with the air resistance passing through the desiccant rotor 30, the air resistance by the circular side wall 11a and the side wall 11b provided over the entire circumference of the outer edge of the desiccant rotor 30 is configured to be larger. Therefore, it is not necessary to provide packing over the entire outer periphery of the desiccant rotor 30. Further, since the packing and the desiccant rotor 30 or the sensible heat rotor 40 do not contact each other, the electric motor 50 having a lower torque can be used as compared with the case where they contact each other.

  As mentioned above, although this invention has been demonstrated based on the Example, the numerical value described in the above-mentioned Example is an example, and is not limited to this numerical value. For example, the piping resistance determined by the capacity of the first blower 71 and the second blower 72, the length of the duct that needs to be provided outside the desiccant-type ventilation fan 70, the design air resistance of the desiccant rotor 30 and the sensible heat rotor 40, etc. Therefore, it is necessary to determine by an experiment because the example numerical value changes.

10: Rotor frame 10a: Right rotor frame 10b: Left rotor frame 11: Partition 11a: Circular side wall 11b: Side wall 12, 13: Horizontal plate 14, 15: Vertical plate 16: Hole 17: Bearing 18, 19: Support Part 20: Guide part 21: Square hole 22: Claw 30: Desiccant rotor 31: Desiccant part 33, 33a, 33b, 43: Air passage surface 35: Shaft hole 36: Center part holder 40: Sensible heat rotor 41: Sensible heat exchange Unit 50: Electric motor 51: Shaft 52: Packing 60: Outer holder 61a, 61b: Side 62: Outer side 70: Desiccant ventilation fan 71: First blower 72: First air passage 76: Second blower 77: Second air passage 79: control board

Claims (2)

A sensible heat rotor or a desiccant rotor including two circular surfaces and outer peripheral side surfaces that are continuous from each other's outer edges of the two circular surfaces is included, and the circular shape is spaced from the entire periphery of the outer edge by a predetermined gap from the circular surface. A circular surface side wall of a predetermined length projecting toward the center side of the surface, a guide portion that continues to the circular surface side wall and rises to a predetermined height in a circular shape, and a predetermined gap from the entire periphery of the outer edge to the outer peripheral side surface A rotor frame for a desiccant type ventilation fan having a side wall of a predetermined length protruding so as to overlap the outer peripheral side surface , wherein the circular side wall, the side wall, and the guide portion are connected in a cross-sectional crank shape .   The rotor frame for the desiccant type ventilation fan is divided into a left rotor frame and a right rotor frame. The left rotor frame and the right rotor frame have the same shape, and are configured by combining the left rotor frame and the right rotor frame. The rotor frame for a desiccant ventilation fan according to claim 1.

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