JP2007040640A - Heat exchanger mounting structure for air conditioning equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fan convector, in which a heat exchanger can be easily mounted on a back panel after accurately welding a U-shaped pipe to an opening-side end of a heat transfer tube of the heat exchanger. <P>SOLUTION: This fan convector is adapted so that a main body is constituted by the back panel opened to the front and a front panel installed to the front surface of the back panel, a suction port and an outlet port are provided in an upper portion and a lower portion of the back panel, respectively, and the heat exchanger 8 comprising a number of fins 8a, and a plurality of U-shaped heat transfer tubes 8b, side plates provided at both side parts of the fins and attached to the back panel and U-shaped pipes 8c welded to the opening-side tips of the heat transfer tubes and a blowing fan 9 feeding air heat-exchanged by the heat exchanger through the outlet port are provided in an air passage connecting the suction port to the outlet port. Both the side plates include U-shaped flange parts 11a opposed to the heat transfer tubes, and mounting parts 11b1, 11b2, 11b3 and 11b4 for the heat exchanger provided in the longitudinal direction thereof. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a heat exchanger for an air conditioner, and more particularly to a heat exchanger mounting structure that is mounted on a rear panel or the like of a housing.

As a conventional heat exchanger mounting structure for an air conditioner, for example, one shown in FIG. 6 is known (see, for example, Patent Document 1).
In FIG. 6, a heat exchanger 4 ′ includes a large number of fins 4a ′, a plurality of U-shaped heat transfer tubes 4b ′ projecting at both ends perpendicular to the fins 4a ′, and the opening-side tips of the heat transfer tubes 4b ′. It is comprised from the U-tube 4c 'welded and the side plate mentioned later fixed to the both sides of the said fin 4a'.

  On both sides of the fin 4a ', there are side plates divided into a first side plate 7' and a second side plate 8 'comprising a connecting portion connected to the first side plate 7' and a mounting portion attached to the base 2 '. The first side plate 7 ′ is fixed to both sides of the fin 4a ′, and the U-shaped tube 4c ′ is welded to the opening end of the heat transfer tube 4b ′. The second side plate 8 ′ connected to the first side plate 7 ′ can be attached to the base 2 ′.

  Further, the connecting portion for connecting the second side plate 8 'to the first side plate 7' corresponds to the screw hole 7c 'and the flange 7b' provided in the first side plate 7 'and the screw hole 7c'. The mounting portion for attaching the second side plate 8 ′ to the base 2 ′ includes a mounting groove 3 a ′ provided in the base 2 ′, and a connection hole 8 a ′ provided in the second side plate 8 ′. Corresponding to the mounting groove 3a ′, it is composed of a mounting piece 8b ′ provided in the second side plate 8 ′, and is screwed with a screw 9 ′ inserted through the connection hole 8a ′ into the screw hole 7c ′ of the flange 7b ′. The connecting portion is connected, the mounting piece 8b ′ is fitted into the mounting groove 3a ′, and the second side plate 8 ′ is attached to the base 2 ′. The flange 7b ′ of the first side plate 7 ′ has a smaller shape than the protruding portion of the heat transfer tube 4b ′. And it has a configuration.

  As a result, as shown in FIG. 6B, after fixing the first side plate 7 ′ provided with the insertion holes 7a ′ on both sides of the fin 4a ′, the heat transfer tube 4b ′ has the opening side tip at the opening side. When welding the U-shaped tube 4c ′, the dimension b of the flange 7b ′ is smaller than the projected dimension a of the projecting portion. Therefore, when welding the U-shaped tube 4c ′, the welding flame A is The construction is such that an accurate welding operation can be performed without being shielded by the tip of 7b '.

  However, in the above-described conventional structure, two side plates, that is, the first side plate and the second side plate are used, the number of parts is increased, and the flange of the first side plate is only on one side, which is not sufficient in strength.

Japanese Patent Laid-Open No. 10-26400 (page 3-4, FIG. 2)

  In view of the above problems, the present invention limits the height of the flange portions of both side plates of the heat exchanger to a height that does not hinder the welding of the U-shaped tube, and attaches it to the rear panel at the end of the flange portion. To provide a heat exchanger mounting structure for an air conditioner that can easily attach a heat exchanger to a rear panel after the U-shaped tube is accurately welded to the opening side end of the heat transfer tube by forming a portion. With the goal.

In order to solve the above-described problems, the present invention provides a large number of fins, heat transfer tubes orthogonal to the fins in the air passage connecting the suction port and the outlet of the housing, and the fins on both sides of the fin. A heat exchanger composed of a side plate provided and a U-shaped tube welded to the heat transfer tube,
The both side plates are provided with U-shaped flange portions facing the heat transfer tubes, and the heat exchanger mounting portions are provided in the longitudinal direction of the side plates.

In addition, a suction port provided in the upper back portion of the housing, a blowout port formed of a blower casing provided in the lower front portion, an air passage connecting the suction port and the blower port, a number of fins, and A heat exchanger composed of orthogonal heat transfer tubes, side plates provided side by side with the fins on both sides of the fins, and a U-shaped tube welded to the heat transfer tubes,
The both side plates are provided with U-shaped flange portions facing the heat transfer tubes, the heat exchanger mounting portions are provided at both ends in the longitudinal direction of the side plates, and one of the mounting portions is connected to the casing. It has a configuration in which the other side is attached to the air blowing casing side on the back side.

  Further, the mounting portion has a configuration in which the flange portion is extended.

  According to the present invention, the U-shaped flange portion opposed to the heat transfer tube is provided on both side plates of claim 1 and the heat exchanger mounting portion is provided in the longitudinal direction of the side plate, whereby the opening side of the heat transfer tube is provided. The heat exchanger can be easily attached to the back panel after the U-tube is accurately welded to the tip. A U-shaped flange portion facing the heat transfer tube is provided on both side plates of claim 2, heat exchanger mounting portions are respectively provided at both ends in the longitudinal direction of the side plates, and one of the mounting portions is provided on the rear surface of the casing. By attaching the other side to the blast casing side, the height of the bosses provided on the housing and the blast casing for attaching the attachment portion can be lowered, and attachment can be facilitated. The attachment portion according to claim 3 can be integrally formed without increasing the number of parts by extending the flange portion.

Hereinafter, an embodiment of the present invention will be described in detail as an example based on the accompanying drawings, taking an indoor unit of a hot water heater called a fan convector as an example.
FIG. 1A is a longitudinal sectional view of a main part of a fan convector according to the present invention, and FIG. 1B is a perspective view of a main part of a mounting portion of a heat exchanger.
FIG. 2 is a perspective view of a state in which a heat exchanger is attached to the back panel according to the present invention.
FIG. 3 is a perspective view of the heat exchanger according to the present invention.
FIG. 4 is a perspective view of an essential part for explaining welding of a U-shaped tube in the present invention.

A first embodiment of the present invention will be described below with reference to FIGS. 1, 2, 3 and 4. FIG.
1 and 2, reference numeral 1 denotes a casing constituting the fan convector main body, 2 denotes a stand constituting the casing 1 placed on the floor surface, 3 denotes a resin-made rear panel whose front surface is open, 4 Is a front panel whose rear surface is opened and is attached to the rear panel 3 and constitutes a main body.

  5 is a suction port provided at the upper back of the housing 1, 6 is an air outlet comprising a blower fan casing 7 provided at the lower part of the front surface, and 8 is provided in an air passage 7 connecting the air inlet 5 and the air outlet 6. A heat exchanger for exchanging heat of the suction air sucked from the suction port 5 by circulating hot water facing the suction port 5, and 9 is housed in the blower fan casing 7, and the heat exchanger A blower fan 10 for sending the hot air heat-exchanged by 8 to the air outlet 6, 10 is arranged in the housing 1 with a predetermined interval between the upper surface, front surface and both side surfaces of the housing 1. The heat shield plate formed with the air passage 12 prevents heat from the hot air exchanged by the heat exchanger 8 from being transmitted to the front panel 4.

  In FIG. 3, a heat exchanger 8 includes a large number of fins 8a, a U-shaped heat transfer tube 8b projecting at both ends perpendicular to the fins 8a, and a U-shaped tube welded to the open end of the heat transfer tube 8b. 8c and side plates 11 to be described later fixed to both sides of the fin 8a.

  As shown in FIGS. 2 and 3, side plates 11 having attachment portions 11 b 1, 11 b 2, 11 b 3 and 11 b 4 to be attached to the back panel 3 are fixed to both sides of the fin 8 a. By attaching the attachment portions 11b1, 11b2, 11b3, and 11b4 to the back panel 3, the side plate 11 can be attached to the back panel 3.

As shown in FIGS. 4A and 4B, U-shaped flange portions 11a facing the heat transfer tubes 8b are respectively formed on the side plates 11, and the height H of the flange portions 11a is set to the U It is limited to a height (for example, 10 mm or less) that does not hinder the welding of the tube 8c. That is, the flange portion 11a is configured to have a smaller dimensional shape (H <M) than the height M of the protruding portion of the heat transfer tube 8b.
Accordingly, when the U-shaped tube 8c is welded to the opening-side tip of the heat transfer tube 8b, the welding flame A is not shielded by the tip of the flange portion 11a, and an accurate welding operation can be performed. .

In addition, the mounting portions 11b1, 11b2, 11b3 and 11b4 of the heat exchanger 8 are provided at the longitudinal ends of the opposed U-shaped flange portions 11a, respectively, and the mounting portions 11b1, 11b2, Insertion holes 11c1, 11c2, 11c3 and 11c4 through which screws are inserted are provided in 11b3 and 11b4, respectively. The mounting portions 11b1 and 11b2 are provided on the upper portion of the flange portion 11a on the rear panel 3 side, and the mounting portions 11b3 and 11b4 are provided on the lower portion of the flange portion 11a on the front panel 4 side.

  Then, screws (not shown) are screwed into the insertion holes 11c1 and 11c2 from the front side of the main body, and the mounting portions 11b1 and 11b2 at the upper portion of the flange portion 11a are attached to the upper portion of the rear panel 3 of the housing 1. Mounting, screws are inserted into the insertion holes 11c3 and 11c4 from the front side of the main body, and the lower mounting portions 11b3 and 11b4 of the flange portion 11a are mounted on the upper portion of the blower fan casing 7, as shown in FIG. As shown, the heat exchanger 8 is obliquely attached along the suction port 5.

In the said structure, since it becomes the structure which hold | maintains the said heat exchanger 8 by the back side and front side of the said flange-shaped flange part 11a, it is the said heat | fever compared with the case where it hold | maintains only by the one-side flange part 11a. Since the load of the exchanger 8 is dispersed, safety is improved.
Even when the heat exchanger 8 is disposed obliquely along the suction port 5, the mounting portions 11b1, 11b2, 11b3 and 11b4 become dewed toward the front side as shown in FIG. There is an effect that the work can be easily performed.

  FIG. 5 shows another embodiment of the present invention. At the upper end portions of the flange portions 11a, the attachment portions 11b to the back panel 3 are formed extending from the end surfaces in the longitudinal direction of the fins 8a. The mounting portion 11b is provided with an insertion hole 11c through which a screw is inserted, and a claw 12 projecting downward is provided at the lower end of each of the flange portions 11a. The claw 12 is inserted into the receiving portion, a screw (not shown) is screwed into the insertion hole 11c from the front side of the main body, and the heat exchanger 8 is attached to the back panel 3. . For this reason, only two mounting screws are required for the back panel 3, and two screws can be reduced compared to the first embodiment, so that the workability is further improved.

  As described above, according to the present invention, the U-shaped flange portions 11a facing the heat transfer tubes 8b are respectively formed on the both side plates 11 of the heat exchanger 8, and the height of the flange portions 11a is increased. The height is limited to a height that does not hinder the welding of the U-shaped tube 8c, an attachment portion 11b to the rear panel 3 is formed at the end of the flange portion 11a, and a screw is screwed to the attachment portion 11b. The heat exchanger 8 is attached to the back panel 3 so that the U-tube 8c is accurately welded to the opening end of the heat transfer tube 8b, and then the heat exchanger 8 is mounted on the back surface. The fan convector can be easily attached to the panel 3.

It is a longitudinal cross-sectional view of the fan convector in this invention. It is a perspective view of the state which attached the heat exchanger to the back panel in this invention. It is an external appearance perspective view of the heat exchanger in this invention. It is a principal part perspective view of the heat exchanger in this invention. It is an external appearance perspective view of the heat exchanger which shows the other Example in this invention. It is a figure which shows the attachment structure of the heat exchanger in a prior art example, (A) is an exploded perspective view, (B) is the figure which looked at the heat exchanger of (A) from the bottom.

Explanation of symbols

1 Housing (Fancon vector)
2 Base 3 Rear panel 4 Front panel 5 Suction port 6 Air outlet 7 Blower fan casing 8 Heat exchanger 8a Fin 8b Heat transfer tube 8c U-shaped tube 9 Blower fan 10 Heat shield plate 11 Side plate 11a Flange portion 11b1 to 11b4 Mounting portion 11c1 11c4 Insertion hole 12 Claw

Claims (3)

A plurality of fins, heat transfer tubes orthogonal to the fins in the air passage connecting the suction port and the air outlet of the housing, side plates provided in parallel with the fins on both sides of the fins, and the heat transfer tubes A heat exchanger consisting of a U-tube welded to
A heat exchanger mounting for an air conditioner characterized in that a U-shaped flange portion facing the heat transfer tube is provided on both side plates, and a mounting portion for the heat exchanger is provided in the longitudinal direction of the side plate. Construction. A suction port provided in the upper rear portion of the housing, a blowout port formed of a blower casing provided in the lower front portion, an air passage connecting the suction port and the blowout port, a number of fins, and orthogonal thereto A heat exchanger comprising a heat transfer tube, side plates provided in parallel with the fin on both sides of the fin, and a U-shaped tube welded to the heat transfer tube;
The both side plates are provided with U-shaped flange portions facing the heat transfer tubes, the heat exchanger mounting portions are provided at both ends in the longitudinal direction of the side plates, and one of the mounting portions is connected to the casing. A heat exchanger mounting structure for an air conditioner, wherein the other side is mounted on the back side and the other side is mounted on the blowing casing side. The heat exchanger mounting structure for an air conditioner according to claim 1 or 2, wherein the mounting portion is formed by extending the flange portion.

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