JP2018132291A - Air heat exchanger with cooling and heating coil installed in plastic casing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-sized and light-weight air heat exchanger excellent in workability for assembly and attachment.SOLUTION: An air heat exchanger uses a casing of a foam plastic injection molded article excellent in adiabaticity and anticorrosion, thereby attaining weight saving. The casing includes a bearing part for supporting a cooling and heating coil, a drain part for discharging dew condensation water smoothly, and a support base provided at both ends of the casing and into which a joint member continuing to a duct pipe is fitted. On a fin group upper surface of the cooling and heating coil, arranged is a ladder-like wind deflection tool where a wind deflection plate groups is integrated with both-side receiving plates.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an air heat exchanger that incorporates a cold / hot water coil in a casing (outer box) and cools or warms air flowing through the casing, and belongs to the technical field of air conditioning.

  Cooling or heating the air blown to the fin group by the fin group that is arranged in the cold / hot water coil and cooled or heated by the cold / hot coil is a common technique in the air conditioning field. Air-conditioning means using a water coil is in practical use.

  FIG. 12 shows an air heat exchanger of Conventional Example 1 listed in Patent Document 1, which was proposed and commercialized by the present applicant as Japanese Patent Application No. 2011-240237 (Japanese Patent No. 5396580). A cold / hot water coil is arranged in the longitudinal direction inside a steel plate casing, and the air flow flowing into the casing from the intake side is guided to the upper surface space of the cold / hot water coil, and the wind deflection is varied to be inserted into the gap between the fins. The amount of air passing through the plate group is sequentially reduced, and a heat exchange action is performed by flowing through the gaps between the fins from the upper surface space. From the lower surface space, dehumidified cooling air is blown into the living room in the summer and heated air in the winter.

  The air heat exchanger of Conventional Example 1 (FIG. 12) has a joint member disposed at both ends and is connected to a duct pipe. A viscous heat insulating material is attached to the outside of the casing to prevent condensation, and during cooling The generated condensed water is discharged from a drain pipe arranged on the intake side of the water stop plate, and the cold / hot water coil is fixed with bolts through the end plate mounting piece, and is small enough to be placed in a narrow space. It is a high performance air heat exchanger.

JP2013-96647A (Patent No. 5396580)

  The air heat exchanger made of stainless steel plate of Conventional Example 1 (FIG. 12) is heavy, and there is a risk of damage or dropping of the air heat exchanger due to rolling during an earthquake, so that joint members are connected to both ends of the casing. There is a problem in terms of cost due to the members and mounting, and the casing made of steel plate is bolted to the upper box, and a 13 mm thick viscous heat insulating material is provided on the box surface to prevent condensation and heat dissipation of the air heat exchanger itself. Since it sticks, the number of production days becomes longer, and there are problems in assembly workability and cost.

  The air heat exchanger of Conventional Example 1 (FIG. 12) must be removed from the narrow ceiling space and disassembled and cleaned when the drain pipe is clogged with dust or dirt contained in the intake air. Maintenance work such as cutting and restoration of the sticking heat insulating material, removal of the cold / hot water coil, and treatment of the heat medium becomes complicated. In addition, each thin deflection plate has a bent shape of 6.2-mm depth between each closely spaced fin, and the reliability of maintaining the protruding length from the upper surface of the cold / hot water coil against the pressure of air flow There's a problem.

An object of the present invention is to provide an air heat exchanger that solves or improves these problems of the conventional example at once, supplies high-efficiency cooling and heating air, and is easy to maintain.
Another object of the present invention is to provide an inexpensive air heat exchanger that is reduced in weight and improved in earthquake resistance and workability.

  In the air heat exchanger of the present invention, the cold / hot water coil is inclinedly arranged in the longitudinal direction in the casing (outer box), and the air flow flowing into the casing from the intake side is guided to the upper space of the cold / hot water coil. The wind deflector is arranged so that the passing air volume decreases in order from the intake side to the supply side, and the wind deflector group is integrally fixed to the receiving plates on both sides. From the upper surface space of the water coil to the lower surface space of the cold / hot water coil, the air flow is sequentially deflected and guided through the gaps between the fin groups of the cold / hot water coil. The width is reduced and the air flow is discharged.

  In this case, the cold / hot water coil has the same form as the conventional cold / hot water coil, and plate-like heat dissipating fin groups having slits on the outer periphery of the parallel communication circulation pipe are arranged in a dense parallel form, and cold water or Although the hot water is circulated, the heat exchange air flows in the longitudinal direction of the cold / hot water coil, that is, the heat exchange air flows in the direct direction to the radiating fin group, and is 27% higher than the conventional example of FIG. The air is cooled or heated by the radiating fin group.

  In addition, the casing of the foam-type or fiber-type heat insulating material is a rectangular upper and lower separation type formed by a U-shaped main body that tilts and houses the cold / hot water coil and a lid that closes the upper surface of the main body. The connection part is integrated by tape sticking, and from the intake side to the supply side, a continuous section with a wide section with a square cross section, an inclined section with a top view, and a narrow section with a small width Consists of forms.

  The wide part is a joint member for connecting the duct pipe on the intake side, for example, a vertical support base for fitting the duct nipple, a support part for supporting the cold / hot water coil, and dew condensation falling from the surface of the cold / hot water coil A drainage part for treating water, an upper and lower end support base that fits the joint member on the supply side to the inclined part, a narrow part is provided with an upper and lower support base that continues from the inclined part, and the casing The shape dimension is appropriately determined according to the dimension of the cold / hot water coil.

The casing may be a foamed plastic type such as polystyrene foam, urethane foam or polyethylene foam, or a fiber type heat insulating material such as glass wool, and typically has a density of 33 kg / m ³ with low thermal conductivity and excellent compressive strength. The beaded polystyrene foam that can be injection-molded is most suitable. For example, the heat dissipating fin has a horizontal length (width) of 203 mm, a vertical length (height) of 44 mm, and a fin group length of 650 mm. The casing containing the cold / hot water coil has a wide part width of 267 mm, a height of 199 mm, a length of 990 mm, and the supply side of the inclined part that continues to the wide part has a width of 211 mm, a height of 199 mm, and a length of The length of the narrow part extending from the inclined part is 50 mm, the total width is 268 mm, the total height is 199 mm, the total length Therefore, it is possible to provide an air heat exchanger having a light weight of 1090 mm (casing weight: 1.3 kg), excellent heat insulation and corrosion resistance, and having a reduced number of manufacturing days.

  The drainage section is installed on the bottom plate of the main body behind the cold / hot water coil, and the surface of the cold / hot water coil is set to a temperature below the dew point during cooling in summer, and the condensed water generated in the cold / hot water coil by cooling the air flowing in from the intake side A 28 mm diagonal groove for guiding condensed water from the upper surface of the bottom plate to the water guide groove is provided over the entire length of the width between the side plates of the main body facing each other, and a water guide groove having a width of 20 mm is arranged adjacently. Then, a waterproof embankment having a trapezoidal cross section having a height of 42 mm and a width of 44 mm from the bottom plate is disposed adjacent to the water guide groove to prevent water flow to the air supply side.

  Further, a drain hole is drilled in the center of the water guide groove, and a trapezoidal water drain groove is formed in a circular shape in the vicinity of the drain hole on the bottom plate bottom surface, so that condensed water can be dropped without being transmitted along the bottom plate bottom surface. In addition, a waterproof layer is formed by applying a vinyl acetate-based waterproofing agent on the upper surface of the bottom plate from the front support stand of the main unit to the waterproof embankment and below the side plates on both sides, thereby preventing the penetration of condensed water and durability of the air heat exchanger It is preferable to maintain the property.

  The drain pan receives and discharges the condensed water falling from the drain hole. The drain plate has a box shape with an open top, and the drain pan bottom plate is inclined to guide the condensed water in the width direction of the casing, and has a different height. A dehumidification type air heat exchanger is constructed in which a drain pipe is provided in a protruding manner in the left-right direction below the side plate to discharge condensed water.

  The drain pan is mounted using a U-shaped connection fitting, with the plate-shaped upper side of the connection fitting placed on the casing top plate and the plate-shaped side sides of the connection fitting placed on both sides of the casing. A bent side with a bolt insertion hole that protrudes outward from the lower end on both sides, and a bolt insertion hole that protrudes in advance from the center of the upper end of the side plate facing in the left-right direction of the drain pan. The projecting piece provided is aligned and connected using long bolts and nuts through both insertion holes, and it is possible to prevent the casing body and the lid from being detached by the connection fitting and the drain pan. .

  In this case, a thick rubber seat is placed between the bent side of the connection fitting and the protruding piece of the drain pan, and the rubber seat absorbs the shaking at the time of the earthquake and prevents damage to the air heat exchanger. In addition, excessive tightening of the nut can be prevented to prevent the top plate from being damaged, and if the nut screwed to the long bolt is loosened and moved downward, the drain hole and the drain pan can be removed without removing the drain pan. The drain pan can be easily cleaned.

The chilled / hot water coil in the inclined arrangement is bent at the lower end of the bent side edges of the front end plate on the intake side by inclining the abutting part on the upper surface of the bottom plate of the casing inwardly to form a triangular piece. The front end plate is prevented from being lowered into the bottom plate. Similarly, the upper end of both bent side edges of the air supply side rear end plate is pressed against the bottom surface of the lid top plate. It is preferable to bend the contact portion in an inclined shape to form a triangular piece to ensure installation stability.
Moreover, it is preferable that the return side of the heat medium inlet to the circulation pipe and the return side of the heat medium outlet are arranged in a protruding form from the side plates on both sides of the casing body to avoid piping in the vertical direction of the small ceiling space.

  Also, the end plate that is longer than the distance between the two side plates of the main body has a front notch drilled in a groove shape over the entire length of the inner surface of both side plates on the intake side of the main body, and the front end plate on the upper surface of the bottom plate. The rear end plate is fitted into a front notch that is formed in a groove shape at the upper end of the inner surface of both sides of the air supply side, and the rear end plate is inserted from both sides of the front notch. Since the lower end of the cold / hot water coil is placed on the inwardly protruding support, the cold / hot water coil can be easily arranged without using an attachment member.

  In addition, the ladder-like wind deflector, which is arranged on the upper surface of the cold / hot water coil and the wind deflector plate group is fixedly integrated with the receiving plates on both sides, has a passing air volume at the upper ends of both receiving plates tapered from the front side to the rear side. A thick-walled (1 mm) wind deflector plate group is joined and placed in order to reduce the temperature, and the receiving plate is placed in the gap between the inner surface of the side plate of the casing body and the fin end of the cold / hot water coil. By inserting the lower end of the coil flush with the lower end of the coil, the lower end of the wind deflection plate group is in close contact with the upper surface of the fin group, and the arrangement interval is increased by increasing the number of radiating fin groups (27% increase from the conventional example). The wind deflector plate group that is reduced (from 144 mm to 115 mm) and increased in number (from 4 to 5) maintains a protruding length from the upper surface of the cold / hot water coil, and stands upright to ensure that the intake air flow Can be efficiently deflected and guided from the upper space of the cold / hot water coil to the lower space. That.

  The air heat exchanger of the present invention adopts an injection-molded product of foamed plastic that can be mass-produced and is inexpensive in the casing, and has improved earthquake resistance and workability by reducing the weight (standard casing weight: 1.3 kg). Highly insulated casing prevents heat dissipation and can supply cooling or heated air with high efficiency, and a duct pipe connection mechanism is formed at both ends, eliminating the need for joint members such as reducer pipes, reducing the total length An object of the present invention is to improve the arrangement workability, to facilitate the maintenance of the drain pan, to simplify the assembly work, and to provide a high-performance and inexpensive air heat exchanger.

  The air heat exchanger of the present invention achieves light weight (casing weight: 1.3 kg) as a casing of an injection molded product using raw materials for plastic heat insulating materials, improves seismic resistance, and from the air heat exchanger itself. The cooling and heating air is supplied to the living room with high efficiency by reducing the heat dissipation of the room, and the support part of the cold / hot water coil, the drainage part of the dew condensation water generated in the casing, and the duct pipe are connected to both ends. By forming and arranging a support base for fitting the joint member, an assembling operation is facilitated and an inexpensive air heat exchanger (approximately 70% of the air heat exchanger of the conventional example 1 shown in FIG. 12) is obtained.

  In addition, the air heat exchanger attaches a U-shaped fitting to the casing, and connects the drain pan and long bolt (standard: 100 mm) placed on the bottom surface of the bottom of the drainage part by screwing a nut. By moving the nut on the long bolt downward, it is possible to easily check the drain hole, the drain pan, and the drain pipe without removing the drain pan.

  In addition, the cold / hot water coil that is inclined in the main body of the casing bends the triangular piece by bending the lower side of both ends of the front end plate and the upper side of both ends of the rear end plate into respective inclined shapes. Formed and prevents the front end plate from coming into contact with the bottom plate, and the triangular piece of the rear end plate is in contact with the lower surface of the lid to suppress the floating of the cold / hot water coil. To secure installation stability, both ends of the front end plate are fitted into the groove-shaped front notch on the intake side, and both ends of the rear end plate are inserted into the front notch on the air supply side. The rear end is inclined and mounted on the support base to suppress air inflow and outflow from the contact portion between the front and rear end plates and the casing, and from the upper surface space of the cold / hot water coil to the lower surface space of the cold / hot water coil, High-performance air that transfers heat from the fin group The exchanger.

  In addition, a ladder-like wind deflector, which is disposed on the upper surface of the inclined cold / hot water coil and is integrally inclined in a manner that a plate-like wind deflector group is inserted into both sides of the taper-shaped side receiving plate, If it is inserted flush with the lower end of the cold / hot water coil in the gap (standard: 2.4 mm) of the water coil, the wind deflector plate will be in close contact with the upper surface of the cold / hot water coil, and will stand upright while maintaining the protruding length. Thus, a high-performance air heat exchanger that can reliably deflect and guide the intake air flow from the upper surface space of the cold / hot water coil to the lower surface space of the cold / hot water coil.

It is explanatory drawing of the air heat exchanger of this invention, Comprising: (A) is a cross-sectional view, (B) is a vertical side view, (C) is the arrow C view of (B), (D) is (B). (E) is a longitudinal sectional view of the main part. It is explanatory drawing of a casing, (A) is a longitudinal cross-sectional view, (B) is a cross-sectional view, (C) is a bottom view, (D) is a right side view, (E) is an intake side front view, (F ) Is a front view of the supply side. It is principal part expansion explanatory drawing of a casing, (A) is the use condition longitudinal cross-sectional view of a drainage part, (B) is the use condition cross-sectional view of the front notch of a support part, (C) is the use condition crossing of a front notch. A front view and (D) are perspective views of a notch and a support base. It is perspective explanatory drawing of a support stand, Comprising: (A) is the front support stand of the intake side lid, (B) is the front support stand of the main body on the intake side, and (C) is the upper front support stand of the supply side lid. , (D) shows the lower side support base of the main body on the air supply side. It is explanatory drawing of a cold / hot water coil, Comprising: (A) is a top view, (B) is the arrow B view of (A), (C) is the arrow C view of (A), (D) is (B). FIG. It is use condition explanatory drawing of a cold / hot water coil, (A) is a vertical side view, (B) is an arrow B view of (A), (C) is an arrow C view of (A), (D) is It is airflow explanatory drawing. It is explanatory drawing of a wind deflector, Comprising: (A) is a whole perspective view, (B) is a top view, (C) is a vertical side view. It is a use state explanatory view of an air heat exchanger, (A) is a top view, (B) is a front view on the intake side, (C) is a side view, (D) is a front view on the supply side. It is explanatory drawing of a drain pan and a connection metal fitting, Comprising: (A) is a vertical side view of a use condition, (B) is a perspective view of a drain pan, (C) is a perspective view of a connection metal fitting, (D) is a perspective view of a rubber seat. (E) is a perspective view of a modified example of the connection fitting. It is explanatory drawing of a hanging metal fitting, Comprising: (A) is a longitudinal cross-sectional view of a use condition, (B) is a perspective view. It is a system diagram of an example air heat exchanger, (A) is a system outline figure, (B) is a vertical section side view of a use state. It is a vertical side view of the air heat exchanger of a prior art example.

[Outline of air heat exchanger (Fig. 1)]
1A and 1B are explanatory views of an air heat exchanger HC of the present invention, in which FIG. 1A is a cross-sectional view in which a cold / hot water coil 4 is disposed, FIG. 1B is a longitudinal side view in which a drain pan is disposed on a lower surface, ) Is a front end view as viewed from an arrow C in (B), and (D) is a rear end view from an arrow D in (B).
As shown in FIG. 1A, the air heat exchanger HC of the present invention has a wide section 13 having a square cross section, an inclined section 14 having a trapezoidal shape, and a small width from the intake side 16 toward the supply side. The wind deflector is composed of a narrow portion 15, and in the wide portion 13, a wind deflection plate group in which the wind deflector plate group is fixedly integrated with the cold arranged hot / cold water coil 4 and the receiving plates disposed on the upper surface of the cold / hot water coil 4. 6, a support portion 3 that supports the cold / hot water coil 4, a drainage portion 2 that discharges condensed water, a lower front support base 115 in which a joint member 81 is fitted at the end of the intake side 16, A main body 11 provided with a support base 123, and provided with a lower front support base 142 and an upper front support base 143 in which the joint member 81 is fitted at the end of the air supply side 17 in the inclined portion 14 and the narrow portion 15. This is an upper and lower split type air heat exchanger having a lid 12 attached thereto.

The overall shape of the air heat exchanger HC is typically a casing 1 having a length L1 of 1090 mm, a width W1 of 268 mm, and a height h1 of 199 mm, such as polystyrene foam, rigid urethane foam, and polyethylene foam. It is made of a plastic-based or fiber-based heat insulating material such as glass wool, and typically employs a polystyrene foam suitable for injection molding. For example, it is a lightweight heat insulating material having a density of 33 kg / m ³ and excellent compression strength. .

Therefore, as shown in FIG. 6D, the heat exchange air flow a1 fed from the joint member 81 on the intake side 16 at the front end flows into only the upper space Su of the cold / hot water coil 4 and flows into the upper space Su. Is a high-pressure region, and the inflow air flow a <b> 2 is arranged in the dense parallel arrangement of the cold / hot water coils 4 from the entire upper surface of the cold / hot water coil 4 to the lower space Sd in the low-pressure region with the help of the wind deflector 60 group of the wind deflector 6. The air flow a4 can be supplied to a predetermined living room through the joint member 81 on the air supply side 17 at the rear end from the air flow a3 in the lower space Su.
And the dew condensation water produced in each fin 42 group of the cold / hot water coil 4 can be removed from the drainage hole 23 through the drain pipe 56 of the drain pan 5 without being scattered into the living room by the waterproof bank 21 of the drainage section 2. Is.

[Cold / hot water coil (Fig. 5)]
5A and 5B are explanatory views of the cold / hot water coil, in which FIG. 5A is a top view, FIG. 5B is a side view as viewed from an arrow B in FIG. ) Is a view taken along the cutout arrow D in (B).
The cold / hot water coil 4 is inclined at θ3 (8.5 °) in the wide portion 13 of the air heat exchanger HC, and imparts heat exchange action to the air flowing through the air heat exchanger. As shown in FIG. 5, the overall shape is a rectangular cube having a length between the end plates 43 at both ends of 650 mm, a width of 213 mm, and a height (thickness) of 44 mm. From the front end and the rear end, A hairpin tube 45 and a U vent 46 for communicating with the circulation pipe 41 protrude from each other.

The fin 42 is an aluminum rectangular flat plate with a slit having a height of 44 mm, a width of 203.2 mm, and a thickness of 0.1 mm. The fin 42 has a line 11 mm from the upper edge and 11 mm from the lower edge. On the line, the upper and lower circulation pipes 41 have holes for penetrating the left and right holes at a distance of 25 mm, and the two rows of the upper and lower holes are shifted and arranged in a staggered pattern. Each fin 42 has a minimum air flow interval (standard: 2 mm). In other words, it is a densely arranged parallel arrangement with a 27% increase over the conventional example (FIG. 12).
Then, a front end plate 431 and a rear end plate 432 are arranged at the front end and the rear end of the fin 42 group to secure the arrangement form of each fin 42 group.

  The end plates 431 and 432 have the same height as the fins 42, and the length is 213 mm protruding 5 mm from the left and right ends of the fins 42. As shown in FIGS. The lower ends of the bent side edges 433 of the end plate 431 having a length of 20 mm are aligned with the inclined arrangement of the cold / hot water coil 4, and are bent in an inclined shape of 0 to 4 mm, and are inwardly triangular. It is preferable that the piece 44 is formed, and similarly, the upper end of both end sides 433 of the rear end plate 432 is also bent in an inclined manner to form the triangular piece 44 inward.

  As shown in FIG. 5A, the arrangement of the circulation pipe 42 having a diameter of 9.5 mm penetrates through the fin 42 group by piercing the upper eight pieces and the lower eight pieces, and at the front end, the hairpin tube 45 is used. As shown in FIG. 5 (D), the left and right two pipes communicate with each other, and at the rear end, as shown in FIG. 5 (C), the upper and lower two pipes communicate with each other through a U vent 46. , The connecting pipe on the forward side 46, the return side 48 connecting pipe at the lower right end, and 65 mm rearwardly projecting from the rear end plate 432, and both the connecting pipes on the forward side 47 and the return side 48 from both sides of the fin 42. It protrudes 85mm outward.

  Therefore, as shown in FIG. 5 (C), if cold water or hot water flows in from the connecting pipe on the forward side 47 in which a male adapter or a female adapter is arranged at the tip, the inflowing water is supplied to the circulation pipe 41 at the left end of the upper row in the figure. It flows into the right adjacent circulation pipe 41, flows in the circulation pipe 41 arranged in a staggered manner in order, and flows out from the connection pipe on the return side 48 having a male adapter or a female adapter arranged at the tip. The group of parallel dense fins 42 penetrating the pipe 41 group receives uniform heat conduction from the cold / hot water circulating in the circulation pipe 41 group.

[Case (Fig. 2)]
The casing 1 has an upper lid 12 and a lower main body 11 which are abutted and connected to form a rectangular cross section. FIG. 2A is a longitudinal side view, and FIG. 2B is a top view of the main body 11. (C) is a bottom view, (D) is a right side view, (E) is a front view from the intake side 16, and (F) is a front view from the supply side 17.

  As shown in FIGS. 2B and 2C, the foamed plastic casing 1 is wide from the intake side 16 toward the supply side 17 with a width W1 of 268 mm, a height h1 of 199 mm, and a length of 990 mm. The height of the upper portion 13 is the same size as the wide portion 13 and the inclined portion 14 having a length of 50 mm, the width W2 is 214 mm, the height is the same size as the wide portion 13 and the length is 50 mm. The narrow portion 15 of the casing 1 is continuous, the front and rear of the air heat exchanger HC are clearly defined, and the arrangement position is visually confirmed. It is also good.

  Further, a small step 114 is provided on the side plate 112 having a height from the lower surface of the bottom plate 111 of the main body 11 to the upper end of the upright portion 113 of the side plates 112, a thickness of the bottom plate 111 of 25 mm, and a thickness of 30 mm, and a width of 10 mm on the inner surface. The top plate 121 of the lid 12 has a thickness of 25 mm, the top plate 121 has both side plates 122 having a height of 40 mm and a thickness of 20 mm, and the main body 11 and the lid. As shown in FIG. 1 (E), the lower end edge Fd of the lid side plate 122 is mounted on the upper end edge Fu of the rising step 114 of the main body side plate 112, and the wide portion 13 and the inclined portion 14, The lid 12 is attached to the main body 11 over the entire length of the narrow portion 15.

  And the front support stand 115,123 provided with the hollow part 116 which inserts the joint member 81 with a pipe-shaped diameter of 149 mm is arrange | positioned in the front end of the suction side 16 of the wide part 13, FIG. 4 (A). 4 shows the front support base 123 below the top plate 121 of the lid 12, and FIG. 4B shows the front support base 115 above the bottom plate 111 of the main body 11. The lower front support base 115 and the upper front support base 123 are shown in FIG. The joint member 81 is inserted by overlapping, and the front support base 123 protrudes downward from the bottom surface of the top plate 121 of the lid 12 and is provided with insertion grooves 123 into which the upright portions 113 of the main body side plate 112 are inserted at both ends. A semi-cylindrical hollow portion 116 with a diameter of 149 mm is drilled in the center in the width direction with a width of 207 mm, a length of 100 mm, a height from the top surface of the top plate 121 of 99.5 mm, and a width of 29 mm and a length of 100 mm at both ends. Equipped with horizontal part 124 And, vertical length of the casing 1 (height) h1 (standard height: 199mm) is the upper front support 123 of one-half.

  Further, the lower front support base 115 at the front end of the intake side 116 protrudes upward from the upper surface of the bottom plate 111 of the main body 11, has the same length and height as the front support base 123 of the top plate 121, and is located above the center in the width direction. The casing 1 is provided with a semi-cylindrical hollow portion 116 having a diameter of 149 mm, which is superposed with the hollow portion 116 of the front support base 123, and a horizontal portion 117 having a width of 29 mm and a length of 100 mm at both ends. A front support base 115 that is a lower half of the height h1 (standard height: 199 mm), and a horizontal part 126 of the upper support base 123 is placed on the horizontal part 117 of the lower front support base 115. Thus, a support function for fitting the joint member 81 on the intake side 16 is formed.

  Further, the upper side support base 143 and the lower side support base 142 on the air supply side 17 are arranged across the inclined part 14 and the narrow part 15 as shown in FIGS. 4 (C) and (D). The upper front support base 123 and the lower front support base 115 on the intake side 16 have the same configuration, and the upper front support base 143 protrudes 99.5 mm downward from the top surface of the top plate 121 of the lid 12, and the intake side 16 is inclined. The portion 14 has a width of 208 mm between the inner surfaces of the side plates 112 facing each other and a width of 154 mm between the inner surfaces of the side plates 112 of the narrow portion 15. The upper surface of the upper support 143 has a semi-cylindrical center with a diameter of 149 mm at the center in the width direction. The portion 144 is disposed over the entire length, and triangular triangular portions 146 are provided at both ends of the upper tip support base 143 of the inclined portion 14.

  Further, the lower side support base has the same shape as the upper side support base 143, protrudes 99.5 mm upward from the bottom surface of the bottom plate 111, and the upper triangular support part 142 of the inclined part 14 has a triangular shape 145 on the upper side. The triangular portion 146 of the first support base 143 is superimposed and formed to form a cylindrical hollow portion 144, and a support function for fitting the joint member 81 on the air supply side 117 is constructed, and the air heat exchanger HC It is possible to reduce the total length without arranging manufactured joint members at the front and rear ends of the.

  And the support part 3 which supports the cold / hot water coil 4 of inclination arrangement | positioning is as shown to FIG.3 (B)-(D) in the both-sides board 112 of 150 mm toward the air supply side 17 from the intake side 16 front end. A groove-shaped front notch 31 having a width of 27 mm and a depth of 3.5 mm is drilled over the entire length in the vertical direction of the side plate 112, and from the front notch 31 toward the air supply side 17, A groove-shaped tip notch 32 having a slope of 4.6 mm to the right by 50.4 mm downward from the upper edge and having a width of 31 mm and a depth of 3.5 mm is formed. A support base 33 having a width of 41 mm and an inclined upper side 34 having a height up to the bottom plate 111 is disposed so as to protrude 3 mm from the inner surfaces of both side plates 112.

  In addition, if the front end plate 431 of the hot / cold water coil 4 is inserted into the front notch 31 from above the front notch 31 and the triangular piece 44 is disposed in contact with the upper surface of the bottom plate 111, both side sides 433 of the front end plate 431. The upper left end of the front end is in contact with the intake side 16 in the front notch 31, and the lower right end of the both end sides 433 of the front end plate 431 is in contact with the air supply side 17 in the front notch 31. Includes a manufacturing dimension error of the cold / hot water coil itself, the rear end plate 432 is inserted with a margin (standard: 4 mm) from the placement work, and the upper left end of the rear end plate 432 is the intake side of the front notch 31. 16, the lower end of the cold / hot water coil 4 is placed and supported on the upper end of the support base 33, and the cold / hot water coil 4 can be disposed in the casing 1 without using a mounting bracket. In this case, a thin and small stainless steel plate may be laid on the bottom plate 111 as a substitute for the triangular piece 44 that prevents the front end plate 431 from being reduced to the bottom plate 111.

  And the drainage part 2 which discharges the dew condensation water which falls from the cold / hot water coil 4 is 187 mm toward the intake side 16 from the rear end of the air supply side 17 behind the cold / hot water coil 4 as shown in FIG. On the bottom plate 111 at the position of, the slanted side 24 having a width of 20 mm for inducing dew condensation water, and the water guide groove 22 dug in a groove shape 15 mm below the top surface of the bottom plate 111, the condensation water is scattered into the living room by pumping air. Each side plate 112 has a trapezoidal waterproof levee 21 having a sloped side 213 with an inclination angle θ1 of 60 ° from the bottom plate 111, an upper side 212 with a width of 20 mm, and a rising side 211 standing with a height of 42 mm. The drainage hole 23 having a diameter of 20 mm is drilled in the central portion of the water guide groove 22, and the waterproof dyke 21 having the inclined side 213 is formed with respect to the height of the inner surface of the casing 1 (standard: 149 mm). At 28%, it is preferable to reduce wind resistance by reducing the resistance of the air flow.

In this case, a trapezoidal draining groove 25 having a width of 8 mm and a depth of 4 mm for dropping condensed water that travels on the bottom surface of the bottom plate 111 is formed in a circular shape having a diameter of 50 mm at the periphery of the drain hole 23 on the bottom surface of the bottom plate 111. .
A waterproof layer 19 is formed by applying a vinyl acetate waterproofing agent on the upper surface of the bottom plate 111 and the lower side plates 112 from the rear end of the front support stand 115 to the rising edge 211 of the waterproof dike 21 to form condensation due to aging. It is preferable to prevent water from penetrating, and a notch 35 having a width of 13 mm through which the connecting pipe on the forward side 47 and the return side 48 of the cold / hot water coil 4 passes is appropriately lengthened downward from the upper ends of the side plates 112 (standard dimensions). : The forward side 47 is 15 mm, and the return side 48 is 36.5 mm).

[Wind deflector (Fig. 7)]
7A and 7B show the wind deflector 6 including the wind deflector 60 group. FIG. 7A is an overall perspective view, FIG. 7B is a top view, and FIG. 7C is a longitudinal side view.
A ladder-like wind deflector 6 having a group of wind deflectors 60 inclined from the upper surface of the chilled / hot water coil 4 in an inclined arrangement (standard elevation angle θ3: 8.5 °) has a tapered shape on both ends. The wind deflecting plate 60 group is fixedly integrated with the plate 66 in a hand-off manner.

  The receiving plates 66 on both sides are 1 mm thick stainless steel plates with a front end width of 69 mm, a rear end width of 43 mm, and a length of 646 mm. An inclined notch having a height of 7.5 mm and a length of 60 mm is provided to prevent the joint, and a claw portion 67 having a width of 15 mm is bent at both ends of the wind deflection plate 60, and the upper end of the receiving plate 66 and the wind deflection plate 60 are bent. The upper end of the receiving plate 66 is aligned and fixed to the receiving plate 66, and the wind deflecting plate 60 group is inclined at θ2 (135 °) from the upper end of the receiving plate 66, and is 71 mm from the front end of the receiving plate 66. A wind deflector 61 is disposed, and the wind deflectors 61 to 65 are sequentially arranged at intervals of 115 mm. This is a ladder-like wind deflector having a width of 207 mm and a length of 646 mm.

In this case, the vertical width of the wind deflector 60 group is such that 61 is 34 mm, 62 is 29.5 mm, 63 is 25 mm, 64 is 20.5 mm, 65 is 16 mm, and the vertical width is from the intake side 16 to the supply side 17. What is necessary is just to arrange | position with the inclination form to reduce.
Further, as shown in FIG. 6A, the wind deflector 6 has the wind deflector plate 60 group in close contact with the upper surface of the fin 42 group of the cold / hot water coil 4 (the position indicated by the broken line in FIG. 7C). The receiving plate 66 is inserted into the gap (standard: 2.4 mm) between the inner surface of the side plate 112 and the end of the cold / hot water coil 4 to the lower end of the cold / hot water coil 4 to resist the air flow pressure and the wind deflector 6. It is to hold.

[Drain pan (Fig. 9)]
As shown in FIG. 1 (B), the drain pan 5 is disposed below the drain hole 23 drilled in the bottom plate 111, receives the water falling from the drain hole 23, and projects from the drain pan 5 in the left-right direction. 9A is a longitudinal side view in use, FIG. 9B is a perspective view, FIG. 9C is a perspective view of a connection fitting 58 that supports a drain pan, and FIG. A perspective view of a rubber seat 584 used, (E) is a perspective view of a plate-like material 59 of a modified example of the connection fitting 58.

  As shown in FIG. 9B, the box-shaped drain pan 5 having an open upper surface with a stainless steel plate thickness of 1 mm has a seat plate 51 arranged in an inclined shape with a length in the short side direction of 130 mm and a length in the long side direction. The length of the side plate 52 on which a stainless steel drain pipe 56 having a length of 265 mm, a diameter standing from the short side of 20 mm, and a length of 30 mm is welded is 35 mm, the height of the facing side plate 52 is 25 mm, and from the long side A bent side 54 having a width of 10 mm that is bent inward and abutted against the lower surface of the bottom plate 111 is disposed at the upper end of the inclined side plate 53 that stands upright. A small piece projecting piece 55 provided with a bolt insertion hole H1 is provided to project outward.

  As shown in FIG. 9 (C), the connection fitting 58 is for bending a plate-like material having a stainless steel plate thickness of 1 mm and a width of 30 mm, and the length to be placed on the top plate 121 is 269 mm. A drain pan comprising an upper side 581, a side 582 that hangs down from both ends of the upper side 581 with a length of 189 mm, and a small bent piece 583 that has a bolt insertion hole H 2 at the lower end of the side 582 and protrudes outward. 5 is a metal fitting for joining.

  As shown in FIG. 9A, the U-shaped connection fitting 58 is arranged in such a manner that the air heat exchanger HC is attached from above, and the upper side 581 is placed on the top plate 121 of the casing 1 on both sides. A rubber seat 584 having a bolt insertion hole H3 is disposed between the bent side 583 and the projecting piece 55 of the drain pan 5 in a state of being sandwiched between the side 112 and the side 112, respectively. Bolt insertion holes H1, H2, and H3 are aligned. For example, a long bolt b1 having a diameter of 6 mm and a length of 100 mm is passed through the bent side 583, the rubber seat 584, and the protruding piece 55 from above, and the lower end of the long bolt b1 The nut n1 is screwed and the drain pan 5 is integrated with the air heat exchanger Hc.

  In this case, the connection fitting 58 and the drain pan 5 are connected via a rubber seat 524 so that the rubber seat 524 absorbs oscillation during an earthquake, and when the nut n1 is tightened, the rubber is fixed. The elasticity of the seat 524 can prevent the air heat exchanger HC from being damaged, and the main body 11 and the lid 12 on the air supply side 17 of the air heat exchanger HC can be securely held.

  Further, during maintenance, if the nut n1 screwed to the long bolt b1 is loosened and moved downward, the connection fitting 58 can maintain the position and the drain pan 5 can be moved downward, and the drain hole 23, drain pan, The drainage structure excellent in the maintainability which can implement the cleaning of 25 and the drain pipe 56 easily is provided.

  A plate-like material 59 shown in FIG. 9E is a modification of the connection fitting 58, and the plate-like material 59 has a width of 30 mm, a thickness of 1 mm, and a length for drilling bolt insertion holes H4 at both ends. It is a 310 mm stainless steel plate, and a long bolt (standard: 350 mm) is passed through the projecting piece 55 of the drain pan 5 from the bolt insertion hole H4, and a nut is screwed from the lower end to the air heat exchanger HC and the drain pan 5. In this case, the rubber seat 583 is disposed on the lower surface of the protruding piece 55 of the drain pan 5, and the drain pan 5 can be easily connected by abutting a conventional washer from below and screwing the nut. can do.

[Assembly of the air heat exchanger (FIGS. 6A to 6C)]
6A and 6B are explanatory views of the arrangement of the cold / hot water coil 4 and the wind deflector 6. FIG. 6A is a longitudinal side view in which the cold / hot water coil 4 is arranged, and FIG. 6B is a front end of the cold / hot water coil 4 in the front notch 31. FIG. 4C is a cross-sectional view in which the rear end plate 432 is disposed in the front notch 32 and the lower rear end of the cold / hot water coil 4 is placed on the support base 33.

  As shown in FIGS. 6A and 2A, the lower main body 11 of the casing 1 prepared by injection molding of foamed plastic is placed on the intake side 16 of the side plates 112 on both sides, on the front side of the cold / hot water coil 4. A front notch 31 having a groove width of 27 mm and a depth of 3.5 mm for inserting the end plate 431 is drilled over the vertical length of the side plate 112, and is provided on the air supply side 17 of the side plates 112. A front notch 32 having a groove-like width of 31 mm and a depth of 3.5 mm into which the rear end plate 432 of the cold / hot water coil 4 is fitted is drilled at the upper end of the side plate 112, and the cold / hot water coil is formed below the front notch 32. A support base 33 having a width of 41 mm that supports the rear end of 4 is disposed so as to protrude 3 mm from the side plate 121, and the forward side 47 and the return side 48 of the cold / hot water coil 4 are placed on the upper ends of both side plates 121 behind the notch 32. The connecting pipe penetrates, the width is 13 Of m, the height of the forward side 47 36.5 mm, height of went back side 48 is provided with a missing included 35 of 15 mm.

  The arrangement of the cold / hot water coil 4 is such that both end sides 433 of the front end plate 431 longer than the width of the fin 42 group are fitted into the groove-shaped front notch 31, and the front end of the cold / hot water coil 4 is attached to the bottom plate 111. The both ends side 433 of the rear end plate 432 is fitted into the groove-shaped front notch 32 at the upper end of the side plate 112, and the rear end of the cold / hot water coil 4 is mounted on the support base 33 having the inclined upper side 34. At the same time, the connecting pipes on the forward side 47 and the return side 48 are respectively inserted into both notches 35 behind the leading notch 32, and the cold / hot water coil 4 is placed in the air heat exchanger HC at an elevation angle θ3 (8. (5 °) is maintained while being inclined.

  Next, the wind deflector 6 in which the wind deflector 60 group is integrated with the receiving plates 66 on both sides is disposed on the upper surface of the cold / hot water coil 4, and the gap between the side plate 112 of the main body 11 and the cold / hot water coil 4 ( Standard: 2.4 mm), the lower end of the receiving plate 66 and the lower end of the cold / hot water coil 4 are the same until the lower end of the wind deflector 60 group comes into close contact with the upper surface of the cold / hot water coil 4 (the position of the broken line in FIG. 7C) If it is inserted as a surface, the wind deflection plate 60 group is inclined upright while decreasing the vertical width from the intake side 16 to the supply side 17 and maintaining the elevation angle θ2 (135 °) from the upper surface of the cold / hot water coil 4. The

Next, as shown in FIG. 1 (E), the side plate upright portion 113 of the lower main body 11 and the side plate 122 of the lid 12 are in phased form, the lid 12 is overlaid on the main body 11, and the joint portion is used as a conventional airtight seal. Covering and sticking with the tape 18 prevents leakage of the through air in the air heat exchanger HC, and seals the main body 11 and the lid 12 by attaching the airtight tape 18 to both ends of the air heat exchanger HC. It is preferable to prevent and integrate (FIG. 8).
Next, the drain pan 5 is arranged on the bottom surface of the bottom plate 111 of the drainage part 2, and the U-shaped connection fitting 58 is attached to the air heat exchanger HC, and the drain pan is connected via the long bolt b1, the rubber seat 584, and the nut n1. 5 is arranged on the lower surface of the air heat exchanger HC.

[Installation of air heat exchanger (Fig. 8)]
FIG. 8 is an explanatory view of an example of the use state of the air heat exchanger HC, (A) is a top view of the air heat exchanger, (B) is a front view from the intake side 16, and (C) is a hanging bracket. 7 is a right side view showing the positional relationship of FIG. 7, and (D) is a front view from the air supply side 17.
The air heat exchanger HC is supported by using a hanging metal fitting 7 shown in FIG. 10 (B), and the U-shaped hanging metal fitting 7 using a stainless steel plate having a thickness of 1 mm and a width of 30 mm is long. Is a base 71 having a length of 219 mm, both sides 72 having a length of 120 mm rising from both ends of the base 71, and a small projecting side 73 having a bolt insertion hole H5 extending outward from the upper end of each side 72. The bottom plate 111 of the air heat exchanger HC is abutted and placed on the bottom 71 of the hanging metal fitting 7, and the air heat exchanger HC is disposed by being fitted between both sides 72. The air heat exchanger It is preferable to use it at both ends in the longitudinal direction of HC (FIG. 8C).

  As shown in FIG. 10 (A), the air heat exchanger HC is attached by hanging a suspension bolt b2 having a conventional diameter of 9 mm from a floor or ceiling horizontal member and extending the protruding side 73 of the suspension fitting 7 in a penetrating form. The suspension bolt b2 is inserted into the insertion hole H5, and a nut n2 is screwed to the lower end of the suspension bolt b2 to suspend and support the air heat exchanger HC, and the nut n2 to be threaded to the suspension bolt b2 By adjusting the position of the air heat exchanger HC, the front end of the air heat exchanger HC is disposed above the rear end so that the condensed water generated in the air heat exchanger HC can be guided to the water guide groove 22. It is preferable to project in the left-right direction so as to project from the air supply side 17 and to avoid the connection and piping of the lower drainage pipe having a narrow pocket (the vertical direction of the ceiling space) and to make the piping in the left-right direction.

In this case, for example, if an anti-vibration suspension tree manufactured by Joto Techno Co., Ltd. (trade name: JOTO anti-vibration suspension tree, not shown) is used in the middle of the suspension bolt b2, it is possible to cope with swinging and vibration during an earthquake. .
Further, a joint member (duct nipple) having a diameter of 149 mm is provided on the front support bases 115 and 123 and the front support bases 142 and 143 provided with hollow portions 116 and 144 having a diameter of 149 mm arranged at the front end and the rear end of the air heat exchanger HC. ) 181 is fitted, and the duct member 82 having an inner diameter larger than the outer diameter of the joint member 181 is connected to the joint member 181 to form the air passage 8, and the air heat exchanger HC, the joint member 81, and the duct tube 82 are connected. The airtight tape 18 is attached and integrated.

[Use of air heat exchanger (Fig. 11)]
FIG. 11 is an explanatory diagram of an air heat exchange system, in which (A) is a schematic diagram of the system, and (B) is a longitudinal side view in which an air heat exchanger HC is arranged in a ceiling space.
The air heat exchanger HC is supplied with cold / hot water from the heat source unit 9 that generates cold / hot water via the outgoing pipe 91, and is connected from the outgoing 47 connection pipe of the cold / hot water coil 4 that is housed in the air heat exchanger HC. The heat medium flows in, flows through the circulation pipe 41, flows out from the return side connection pipe 48, returns to the heat source unit 9 through the return side pipe 92, generates cold / hot water again by the heat source unit 9, and performs air heat exchange. The water passing through the air heat exchanger HC is cooled or heated by repeating the water supply to the vessel HC, and the generated condensed water is discharged to the outside from the drain pipe 57 connected to the drain pipe 56 of the drain pan 5. (Fig. 10 (A))

  As shown in FIG. 10 (B), air is supplied to the air heat exchanger HC from the conventional intake port 23 arranged on the outer wall OW through the duct pipe 82 by the suction and pressing action of the fan 84, so that the ceiling space The air supplied to the air heat exchanger HC suspended by the suspension bolt b2 from the inner floor F, and the air flowing through the air heat exchanger HC is cooled or heated by the cold / hot water coil 4 and is disposed on the ceiling C surface. It is supplied from the mouth 85 to the living room. Further, a filter may be appropriately disposed between the intake port 23 and the fan 84 to remove dust and dirt contained in the intake air.

  In the air heat exchanger HC of the present embodiment, the cooling water is circulated in the cold / hot water coil 4 during the cooling operation, whereby the air flow a2 flowing into the air heat exchanger HC is exchanged with the heat from the fins 42 group. In response to this, the dew condensation water of the fins 42 group that can be supplied into the room as the dehumidified cold air a4, and at the same time, does not flow to the intake side 16 due to the air flow from the intake side 16 to the supply side 17, It was possible to eliminate from the drain pipe 56 attached to the drain pan 5 without any trouble by the intervention of the waterproof bank 21.

  Further, during the heating operation, the warm water was circulated through the cold / hot water coil 4, and the intake air flow a2 into the air heat exchanger HC could be supplied into the living room as the heated air by the heat exchange action in the fins 42 group. . The air heat exchanger is long in the vertical and horizontal dimensions, but the drain pipe 56 is arranged in the horizontal direction, so that it can be easily installed in a limited space such as a ceiling space or an underfloor space.

In addition, the heat exchanging action is such that a large number of small fins 42 having vertical and horizontal dimensions (standard: vertical 44 mm, horizontal 203.2 mm) are arranged in the longitudinal direction, and an air flow is formed on the upper and lower surfaces of each fin 42 and the fin 42 orientation plane orthogonal form. However, in the case of high pressure air Su, the space flares in a triangular shape from the inlet side to the back side, and the pumped air flow a2 has the maximum pressure at the back, and the lower surface space Sd has a low pressure. Therefore, the compressed air flow a <b> 2 forms gaps between the fins 42 over the entire length in the length direction of the cold / hot water coil 4 with the help of the rectifying and deflecting action of the wind deflector plates 60 arranged at intervals. It penetrated and exhibited a uniform heat exchange effect.
The lower end of each deflection plate 42 is in close contact with the upper surface of the fin 42 group by inserting the receiving plate 66 into the gap between the side plate 112 and the fin 42 group, and the lower surface space Sd in the low pressure region from the gap of each fin 42. On the other hand, the once-through air flow could be pumped without any problem.

  Further, the cold / hot water coil 4 has both end sides 433 of the front end plate 431 inserted into both groove-shaped front notches 31 and both end sides 433 of the rear end plate 432 are inserted into both end notches 32, respectively. Since the rear end of a certain hot / cold water coil 4 is inclined and placed on the support base 33, the cold / hot water coil 4 can be easily mounted and installed without using a mounting bracket, and the arrangement work of the wind deflection plate group is facilitated. An air heat exchanger excellent in terms of work and cost (approximately 70% of the conventional air heat exchanger shown in FIG. 12) could be provided.

  In addition, the casing 1 of the air heat exchanger HC is formed by injection molding of foamed plastic having excellent corrosion resistance and heat insulation properties. Therefore, without attaching a heat insulating material to the casing, the casing 1 from the air heat exchanger itself can be used. Heat dissipation is prevented and the amount of fins 42 is increased, so that highly efficient cooling or warming air can be supplied to the living room. The main body 11 and the lid 12 are easily airtight by pasting a conventional airtight tape 18. We were able to provide an air heat exchanger that is lightweight and excellent in earthquake resistance.

Further, the air heat exchanger HC of the present invention has an air temperature of 35 ° C. and a humidity of 70% (absolute humidity: the amount of water vapor per 1 kg of dry air of moist air) during the summer operation. g), 25.6 g / kg) of air is introduced through the fan 84 at an air volume of 150 m ³ / h, and a heat medium having a chilled water temperature of 10 ° C. is supplied to the chilled / hot water coil 4 in the air heat exchanger HC at a flow rate of 3. When water is circulated at 5 L / min, the cold / hot water coil 4 is dehumidified to 1778 g / h, and the amount of water vapor with an air temperature of 18.3 ° C. and humidity of 97.6% (absolute humidity: 12.9 g / kg) is substantially reduced. The dehumidified cooling air that has been halved is discharged from the supply side 17 with a heat release of 1876 W / h. During the winter operation, for example, the air amount and the flow rate of the heat medium are the same as those during the summer operation, and the intake air Air at 0 ° C flows from side 16 When hot water with a temperature of 40 ° C. is fed and circulated through the air 4, warm air of 30 ° C. is discharged from the air supply side 17 at a heat release amount of 1400 W and can be mixed with the air in the room to create a comfortable indoor air environment. It was.

HC: Air heat exchanger 1: Casing 2: Drainage part 3: Bearing part 4: Cold / hot water coil 5: Drain pan 6: Wind deflector 7: Suspension fitting 8: Airway 9: Heat source machine 11: Body 12: Lid 13: Wide part 14: Inclined part 15: Narrow part 16: Intake side 17: Air supply side 18: Airtight tape 19: Waterproof layer 21: Waterproof dike 22: Water guide groove 23: Drainage hole 24: Slope 25: Water drain groove 31: Front Notch 32: Tip notch 33: Supporting base 34: Inclined upper side 35: Notch 41: Circulating pipe 42: Fin 43: End plate 44: Triangular piece 45: Hairpin tube 46: U vent 47: Outward side 48: Return side 51: Seat plate 52, 112, 122: Side plate 53, 141: Inclined side plate 54: Bent portion 55: Projection piece 56: Drain pipe 57: Drain pipe 58: Connection fitting 59: Plate-like materials 60, 61, 62, 63, 64 , 5: Wind deflecting plate 66: Receiving plate 67: Claw portion 71: Base 72, 582: Side 73: Protruding side 81: Joint member 82: Duct pipe 83: Air inlet 84: Fan 85: Air inlet 91: Outward side Pipe 92: Return side pipe 111: Bottom plate 113: Upright portion 114: Step 115, 123: Front support base 116, 144: Hollow portion 117, 124: Horizontal portion 121: Top plate 125: Insertion groove 142: Lower side front support base 143: Upper tip support 145: Lower triangular portion 146: Upper triangular portion 211: Upright side 212, 581: Upper side 213: Inclined side 431: Front side end plate 432: Rear side end plate 433: Both side sides 583: Bending Side 584: Rubber seat C: Ceiling F: Floor Fd: Lower edge Fu: Upper edge H1, H2, H3, H4, H5: Bolt insertion hole OW: Outer wall Sd: Lower surface space Su: Upper surface space a1, a2, a3, a4: air flow b1, b2: bolts θ1, θ2, θ3: elevation angle

Claims (6)

  The plastic casing is composed of a wide section having a rectangular cross section, an inclined section having a trapezoidal shape, and a narrow section having a small width, and the wide section includes a chilled / hot water coil having an inclined arrangement and the chilled / hot water. A wind deflector, which is disposed on the upper surface of the coil and has a wind deflector group fixed and integrated on both sides of the receiving plate, is housed, a support portion that supports the cold / hot water coil, a drainage portion that discharges condensed water, and an intake air An upper and lower front support base for fitting a joint member into the side end portion, and an upper and lower front support base for fitting the joint member are provided at the supply side end portions of the inclined portion and the narrow portion. And an air heat exchanger.   The casing having a square cross section and a vertically divided type has a main body on the lower side and a lid on the upper side, and the lower edge of the side plate hanging from both ends of the top plate of the lid is a step in the small upright portion at the upper end of both side plates of the main body The upper end edge of the upright portion is in close contact with the lower surface of the top plate and is connected vertically, and an airtight tape is attached to a contact portion between the main body and the lid and integrated. Air heat exchanger as described in.   The cold / hot water coil built in the casing is provided on both sides of the front end plate with the lower end inclined and bent in a front notch cut in a groove shape over the entire length in the vertical direction on both side plates on the intake side of the casing body. And is placed on the bottom plate of the casing, and is cut into a groove notched in the shape of a groove whose upper and lower lengths are small and the lower end is inclined at the upper end of the plate on the air supply side of the main body. The rear end plate of the cold / hot water coil is fitted on the inclined upper side of the support base that protrudes inwardly from the both side plates of the lower side of the front notch by inserting both end sides of the rear end plate bent at the upper end. The air heat exchanger according to claim 1 or 2, wherein a lower surface is placed to support the cold / hot water coil.   On the bottom plate of the casing behind the cold / hot water coil, a hypotenuse that guides condensed water, a water guide groove dug into a groove, and a trapezoidal waterproof levee standing on the bottom plate are disposed between the side plates of the main body. The air heat exchanger according to claim 1, wherein the air heat exchanger is disposed over a central portion of the water guide groove and has a drain hole.   A box-shaped steel plate drain pan that is inclined in the width direction of the casing and protrudes the drain pipe in the left-right direction and is open on the top surface is disposed on the bottom surface of the bottom plate below the drain hole, and is made of a U-shaped steel plate. The air heat exchanger according to any one of claims 1 to 4, wherein the casing is connected to and supported by the drain pan in a covering form using a connection fitting.   The wind deflector is configured such that the upper end of the wind deflector plate group is aligned with the upper end of the receiving plate on both sides having a tapered shape, and the vertical width is reduced from the intake side to the air supply side so as to be inclined and fixed in a spanning manner. 2. The gap between the side plate of the casing main body and the fin group is inserted into the lower end of the fin group so that the lower end of the wind deflecting plate group is in close contact with the upper surface of the fin group. Air heat exchanger as described in.

Images