JPS5833453Y2 - air conditioner - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improved structure of an air conditioner that prevents condensation and facilitates the installation of a centrifugal blower.

An embodiment of the present invention will be described below based on the drawings. 1 is a machine room 5 which houses a centrifugal blower 2 and a heat exchanger 4 with a drain pan 3 disposed on the windward side of the blower; This ceiling-mounted air conditioner is mainly composed of a plenum chamber 6 installed in front of the plenum chamber 6, a decorative panel 7 and an air outlet grill 8 installed on the upper surface and front of the plenum chamber 6, and a machine room 5 from the puttanium chamber 6. It includes a bottom plate 9 that spans over the machine room 5, and a wire plate 10 that closes the side entrance of the machine room 5.

11 is a back suction port.

The centrifugal blower 2 is composed of two double-suction type sirocco fans 13 driven by a coaxial electric motor 12 and a fan casing 14. An abbreviated locking piece 17 is integrally formed to protrude from the scroll part and is inserted into the plenum chamber 6 side from the air outlet 16 with a width smaller than that of the scroll part.

Reference numeral 18 denotes a soft sealing material such as foamed polyethylene, foamed urethane foam, or foamed comb, which air-seals the machine room 5 and the plenum room 6 between the flange piece 19 of the plenum room 6 and the front blowing wall 20 of the machine room 5. It is intervening.

21 is a soft sealing material such as foamed polyethylene, foamed urethane foam, or foamed rubber attached to the lower edge 22 of the air outlet 16, and is pressed by the tongue portion 23 of the fan casing 14;
This air seals the plenum chamber 6 with positive pressure and the machine room 5 with negative pressure.

As described above, in the air conditioner 1 in which the machine room 5 and the plenum room 6 are manufactured separately by sheet metal processing and assembled, the front outlet wall 20 and the flange piece 19 are connected via the soft sealing material 18. If the screws 24 are simply tightened at four locations a, b, c, and d, for example, the flange pieces 19 located above the air outlets 16 and 16 other than those locations will bulge and deform due to the elastic restoring force of the soft sealing material 18. As a result, a gap is created through which the cool indoor air cooled by the heat exchanger 4 leaks, causing dew 28 to adhere to the interface between the machine room 5 and the plenum room 6, as shown in FIG. In order to deal with this problem, the locking piece 17 is formed to protrude from the edge of the scroll portion 15 of the fan casing 14 to press the flange piece 19 from the plenum chamber 6 side, as described above.

That is, after inserting the locking piece 17 into the plenum chamber 6 through the air outlet 16 with the centrifugal blower 2 tilted slightly downward, the fan casing 14 is brought into contact with the front air outlet wall 20 and the tongue portion 23 is inserted. The fan casing 14 is placed on the soft sealing material 21 and pressed, and the projecting piece 25 of the fan casing 14 is screwed onto the front outlet wall 20 with screws 26, 26 to join the outlet 27 to the outlet 16, as shown in FIG. As shown, the locking piece 17 is connected to the flange piece 19.
is pressed against the front blowing wall 20 via the soft sealing material 18 to ensure uniform air sealing and prevention of dew condensation.

Furthermore, when the above-mentioned centrifugal blower 2 is installed, when the locking piece 17 is engaged with the flange piece 19 and the tongue portion 23 is engaged with the soft sealing material 21, the dead weight of the centrifugal blower 2, that is, the fan casing 14, Since the weight of the sirocco fan 13 and the electric motor 12 is applied to the locking piece 17 that is engaged with the flange piece 19 using the tongue portion 23 that is engaged with the soft sealing material 21 as a fulcrum, the centrifugal blower 2 is easily and reliably suspended. The screws 26, 26 can be easily tightened without supporting the blower, and the load on the locking piece 17 adds to the pressing force of the flange piece 19, making the sealing material 18 softer. This will increase the air seal effect.

In addition, the air sealing effect of the soft sealing material 21 pressed by the tongue portion 23 can reliably prevent cold air from leaking backward from the positive pressure plenum chamber 6 to the negative pressure machine room 5.

In this way, the air conditioner of the present invention uses a soft sealing material to connect the plenum chamber's fludge piece and the machine room's blowout wall using the abbreviated locking piece that protrudes from the edge of the scroll portion of the discharge port in the fan casing. Since the pressure is applied from the plenum room side through the plenum room, the disadvantage of cold air leaking from the combination of the separately configured machine room and plenum room and dew adhering to the outside surface is reliably eliminated. In addition, by using a soft sealing material that engages with the tongue of the fan casing, air sealing between the plenum room and the machine room is ensured, and the centrifugal blower can be easily installed by temporarily fixing the blower. etc., are extremely useful.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention. Figure 1 is a side view of the air conditioner with the side plate removed, Figure 2 is an enlarged sectional view of the main part of Figure 1, and Figure 3 is a partially cutaway view. It is an exploded perspective view of the main part of an air conditioner showing a state. 2... Centrifugal blower, 4... Heat exchanger, 5... Machine room, 6... Plenum room, 14... Fan casing, 15... Scroll part, 16... Air outlet , 17
... Locking piece, 18 ... Soft sealing material, 19 ... Flange piece, 20 ... Blowout wall, 21 ... Soft sealing material, 23 ... Tongue, 27 ... Discharge port .

Claims (2)

[Scope of utility model registration request] (1) A mechanical room that houses a centrifugal blower in which the outlet of the fan casing is connected to the outlet and a heat exchanger installed on the windward side of the blower, and a machine room that is formed separately from the chamber. The plenum chamber is assembled into the machine chamber by bonding and fixing a flange piece to the outlet wall of the outlet through a soft sealing material, and an abbreviated locking piece is provided at the edge of the scroll portion of the outlet. An air conditioner characterized in that the locking piece is formed to protrude and presses the flange piece from the plenum chamber side. (2) The air conditioner according to claim 1, wherein a soft sealing material that is pressed by the tongue of the fan casing is attached to the side edge of the air outlet.