JPS6319711Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an exhaust top as a terminal component of an exhaust system of an outdoor unit in an air conditioning system.

A refrigerant heating device for heating a refrigerant is incorporated in an outdoor unit related to an air conditioner having both heating and cooling functions. When the refrigerant heating device is equipped with a combustor, an exhaust pipe for leading the combustion exhaust gas out of the main casing of the outdoor unit is usually drawn out laterally at the back. An exhaust top as an exhaust terminal part is attached to the exhaust pipe pulled out from the main body casing. However, since conventional exhaust tops are simply fitted into the exhaust pipe, it is difficult to specify the position in the circumferential direction, and the exhaust top may be connected in an inclined position with respect to the exhaust pipe, and the separation distance from the main body casing is also limited. It was in pieces.

The present invention aims to solve the above-mentioned conventional problems by providing an exhaust top of an outdoor air-conditioning/heating unit that can be firmly connected in an appropriate position to the exhaust pipe that leads out the combustion exhaust gas protruding from the main body casing. This is what we provide.

Next, the configuration of the present invention will be specifically explained based on an embodiment shown in the drawings.

The outdoor unit in the air-conditioning and heating apparatus as an application example of the present invention shown in the drawings has a main body 1 built-in a compressor 2, a cooling fan, a heat medium heating device 3, and the like. The heat medium heating device 3 has a combustor 4,
A combustion operation is performed in response to fuel supplied by the fuel supply system and combustion air supplied by the blower system, and the refrigerant flowing through the refrigerant pipe 5 is heated. This refrigerant heating device 3
The terminal structure is a header of a heat exchanger, from which an exhaust pipe 6 for guiding combustion exhaust gas is led out laterally through the back side of the main body casing 7. An exhaust top 8 having an exhaust chamber S and being a terminal part related to exhaust is attached to the leading end of the exhaust pipe 6, and combustion exhaust gas is exhausted from the exhaust top 8. The exhaust top 8 is provided with a connecting cylinder part 8A that can be screwed into and connected to the exhaust pipe 6 in an airtight manner, and the exhaust chamber S communicates with the exhaust pipe 6 via this connecting cylinder part 8A.
The portion forming the exhaust chamber S is an exhaust end portion that bulges outward from the connecting tube portion 8A, and has exhaust holes 8B formed on the top, front, and bottom surfaces. On the base side of the connecting cylinder part 8A of the exhaust top 8, that is, in the structure of the communication part with the connecting cylinder part 8A of the exhaust chamber S, there is a main body casing 7 having a substantially Z-shaped end face directly below the connecting cylinder part 8A. A fixing piece 9 for fixing to is attached by welding or screwing. A flange 9A on the free end side of the fixed piece 9 can abut against the main body casing 7, and has two screw insertion holes 9B formed side by side. That is, in the exhaust top 8 of this example, when the connecting cylinder part 8A is fitted to the exhaust pipe 6, a fixing piece 9 is attached to the outer surface of the main body casing 7.
By forming a screw hole 10 on the main body casing 7 side, which the flange 9A contacts and which corresponds to the screw insertion hole 9B of the flange 9A, the two screws 1
1, which is in a fixed relationship with the main body casing 7. Web portion 9C of the fixed piece 9 that protrudes behind
defines the separation distance of the exhaust top 8 from the main body casing 7, defines the circumferential position of the exhaust top 8 by correspondence between the screw insertion hole 9B and the screw hole 10, and uniquely determines the installation state of the exhaust top 8. shall be taken as a thing. As a result, the mounting position and mounting posture of the exhaust top 8 with respect to the exhaust pipe 6 are no longer arbitrary, and the mounting state of the exhaust top 8 can be optimized.

As is clear from the above description of the embodiments, the exhaust top of the outdoor air conditioning/heating unit of the present invention has a connecting cylinder part that fits and connects to the exhaust pipe that is pulled out sideways outside the main body casing of the outdoor unit. Since the exhaust end on the base side of the connecting cylinder has a fixing part that is screwed to the main body casing protruding from its edge, it is necessary to set the fixing position of the fixing part with respect to the main body casing. Therefore, the mounting attitude relative to the main body casing and the exhaust pipe can be uniquely defined, and the separation distance from the main body casing can be defined based on the amount of protrusion of the fixing part. Therefore, it is possible to eliminate the arbitrariness of attachment to the exhaust pipe and ensure proper attachment.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing an outdoor unit in an air conditioning system as an application example of the present invention, and FIG.
FIG. 3 is an enlarged perspective view of main parts showing the structure of the exhaust top. Note that the same reference numerals in the figures indicate the same or equivalent parts. 1... Main body, 3... Heat medium heating device, 6... Exhaust pipe, 7... Main body casing, 8... Exhaust top,
8A...Connection cylinder part, 8B...Exhaust hole, 9...Fixing piece, 9A...Flange, 9B...Screw insertion hole, 9
C... Web part, 10... Screw hole, 11... Screw, S... Exhaust chamber.

Claims (1)

[Scope of utility model registration request] It has a connecting tube that can be fitted and connected to an exhaust pipe for guiding combustion exhaust gas drawn out of the main body casing laterally from the end of the built-in heating medium heating device, and has an exhaust gas on the base side of the connecting tube. The exhaust end portion having the hole is provided with a fixing portion on the rear edge thereof which can be screwed to the main body casing and has a protruding amount that defines the separation distance of the exhaust end portion from the main body casing. Features: Exhaust top of outdoor heating/cooling unit.