JPH08334252A - Method for remodeling existing common duct in collective housing into air supply-exhaust equipment for ff-type burning appliance - Google Patents

Abstract

PURPOSE: To separate air supply and exhaust without making modifications to an existing common duct of a collective housing and to enable use of a burning appliance of high capacity by a method wherein an air supply duct and an exhaust duct are inserted from the top inside the existing common duct and connected to an FF type burning appliance through temporary air supply and exhaust ports on each floor. CONSTITUTION: The air flowing in from an air supply duct 1 is supplied for burning through an air supply pipe 4 of a burning appliance 3 on each floor and an exhaust is wholly gathered into an exhaust duct 2 from an exhaust pipe 5 and released outside a building. In another way, the air flowing in from the air supply duct 1 is supplied for burning wholly through the air supply pipe 4 of the burning appliance 3 on each floor and the exhaust is released outside the building directly through an existing U duct. In still another way, the air in the existing U duct is introduced into the burning appliance 3 through the air supply pipe 4 and the exhaust is released outside the building from the exhaust pipe 5 through the exhaust duct 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for remodeling an existing common duct in an apartment house into a supply / exhaust system for FF type combustion appliances (closed combustion appliances).

[0002]

2. Description of the Related Art In the case of an apartment house, there are many cases in which a common duct that vertically penetrates the building is constructed for the purpose of supplying and exhausting gas appliances and the like. As this common duct, the U-duct shown in FIG. 14 and the SE duct shown in FIG. 15 are known. In the U-duct 50 shown in FIG. 14, the duct itself is U.
The duct 50 has a character shape and is provided on the rising side 51 of the duct 50.
In this system, the air supply / exhaust top b is opened to supply air from the ascending side 51, and exhaust is also performed inside the ascending side 51. FIG.
The SE duct 60 shown in FIG. 5 is composed of a horizontal duct 61 and a vertical duct 62, and a supply / exhaust top b of the combustion appliance a is opened in the vertical duct 62 to supply / exhaust air from here. FIG. 16 shows an example in which the top b of the FF type combustion appliance a is attached to the U-duct 50 or the SE duct 60.

[0003]

However, the above-mentioned U-duct 50 and SE duct 60 have the following drawbacks.

A. When installing combustion equipment such as FF type or BF type (closed type) water heaters and heat source units, the equipment on the lowest floor can be burned using fresh air,
The higher the floor, the more the air mixed with the exhaust gas in the lower floor is used for combustion, which deteriorates the combustibility. Therefore, on the upper floor, equipment that can burn with low oxygen concentration is required. Therefore, when using a common duct on the upper floor,
It is necessary to inspect whether or not it is a special-purpose burning device that is improved so that it can burn even at low oxygen concentration.

B. In the age when many U-duct and SE duct systems were adopted, the capacity of water heaters and heat source devices was 20,000.
The majority was 0-30,000 kcal / h. But,
At present, the capacity is improving, and it is 45,000-60,
000 kcal / h is used. Therefore, when considering a renewal due to aging deterioration of water heaters and heat source devices, naturally equipment with improved capacity is desired, but the existing duct area remains the same, and in relation to the building frame. , Because it is impossible to expand this duct area,
There is a problem in that it is not possible to use a burning appliance with improved capacity.

[0006]

The object of the present invention is to achieve the above-mentioned a.
The object is to solve the problems described in (1) and (2), and the configuration is as follows.

1. Insert the air supply duct and the exhaust duct from the top into the existing common duct, connect the air supply pipe of the FF type combustion appliance to the air supply duct through the existing air supply and exhaust port of each floor, and exhaust the exhaust pipe The existing common duct in an apartment house characterized by connecting to the duct
A method to remodel the air supply and exhaust equipment for F-type combustion appliances.

2. Insert the air supply duct from the top into the existing common duct, connect the air supply pipe of the FF type combustion appliance to the air supply duct through the existing air supply and exhaust ports on each floor, and install the top of the exhaust pipe. A method for converting an existing shared duct in an apartment house into an FF type air supply / exhaust equipment for combustion appliances, which is characterized in that it opens in the shared duct.

3. Insert the exhaust duct from the top into the existing shared duct, connect the exhaust pipe of the FF type combustion appliance to the exhaust duct through the existing supply and exhaust ports on each floor, and connect the top of the air supply pipe to the existing shared duct. A method of converting an existing common duct in an apartment house into an FF type air supply / exhaust equipment for combustion appliances, which is characterized by having an opening inside.

4. A method of remodeling an existing common duct in an apartment house as described in 1 or 2 or 3 above, in which a backflow prevention damper is attached to a part of an exhaust pipe into an FF type combustion appliance air supply / exhaust facility.

[0011]

In the case of the above item 1, the outside air for combustion (fresh air) sucked from the air supply duct is sucked through the air supply pipes of the combustion appliances of each floor while descending through the air supply duct and burned. Be used for. All the combustion exhaust gas is discharged into the exhaust duct through the exhaust pipe, rises in the exhaust duct, and is diffused into the atmosphere. In the case of the above item 2, the air supply is performed through the air supply duct, and the exhaust air is performed through the existing common duct. In the case of the above item 3, the air supply is performed through the existing common duct, and the exhaust air is performed through the exhaust duct. The backflow prevention damper installed in the exhaust pipe prevents exhaust gas from flowing back due to negative pressure on the device side.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a conceptual diagram of air supply / exhaust equipment installed in an existing U-duct by the method of the present invention, where 1 is an air supply duct, 2 is an exhaust duct, 3 is an FF type combustor, Reference numeral 4 denotes an air supply pipe connected to the air supply duct 1, 5 denotes an exhaust pipe connected to the exhaust duct 2, and outside air flowing from the air supply duct 1 flows through the air supply duct 1 as indicated by an arrow. The exhaust gas is supplied to each of the combustion appliances 3 while descending, and the exhaust gas is delivered from the exhaust pipe 5 into the exhaust duct 2 and ascends in the exhaust duct 2 to be diffused into the atmosphere. In the figure, 4a is an air supply top and 5a is an exhaust top.

Next, an example of construction of the air supply / exhaust equipment having the above-mentioned structure, in which an existing U-type common duct is modified, will be described with reference to FIGS. a. First, as shown in FIG. 2, the old combustion appliance a is removed from the existing U-duct 50. b. Next, as shown in Fig. 3, go up to the roof of the building and
-The measure 7 is lowered into the duct 50, a person enters the duct 50 through the opening on the first floor, and the position of the air supply / exhaust port 6 on each floor is marked P on the measure 7. c. Next, as shown in FIG. 4, the partition wall 8 is attached to the U-turn portion of the U-duct 50, and the pedestal 9 is installed at the bottom of the construction side. Also, the top 53 of the U-duct 50
Process so that work can be done. d. Next, as shown in FIG. 5, from the top of the U-duct 50, based on the measure 7 marked P in b, according to the air supply / exhaust port 6 of each floor, the air supply duct with the air supply top 4a attached in advance. U-supporting 1 with rope 11
Lower it into the duct 50. At this time, the air supply duct 1 is gradually lowered while adding a predetermined length one by one at the crown 12 (FIG. 6). e. Next, when the air supply duct 1 is lowered to the gantry 9 described above, the air supply duct 1 is fixed vertically (Fig. 7), and then the air supply pipe 4 of the combustion appliance 3 on each floor is attached to the air supply duct 1 in advance. Connect to the air supply top 4a. The above-mentioned construction is similarly performed on the exhaust duct 2 side, but the description thereof is omitted here.

FIG. 8 is an explanatory view showing a state in which the air supply duct 1 and the exhaust duct 2 are inserted into the rising side 51 of the U-duct 50. In FIG. 8, 5a is an exhaust top. Figure 9
Is an example in which the air supply duct 1 and the exhaust duct 2 are separately inserted into the ascending side 51 and the descending side 52 of the U-duct 50. Figure 10
Inserts only the air supply duct 1 (in the case of claim 2) or the exhaust duct 2 (in the case of claim 3) into the U-duct 50, and when the air supply duct 1 is inserted, the exhaust air is U- It is explanatory drawing of each Example which performed via the duct 50 and supplied air via the U-duct 50 when only the exhaust duct 2 is inserted. 11 and 12 are explanatory views of the exhaust top 5a, and the exhaust top 5a is the upper part 5b.
Is opened and the lower portion 5c is closed, and a drain drain 5d is provided in the closed lower portion 5c, and is fixed to the exhaust duct 2 by a rivet 10. In the case of the air supply top 4a,
The structure is the same as that of the exhaust top 5a shown in FIGS. 11 and 12, except that the lower portion 5c is not closed and is opened. FIG. 13 shows an embodiment in which a backflow prevention damper 13 is attached to a part of the exhaust pipe 5, and while the combustion device 3 is stopped, the combustion device 3 side becomes negative pressure and exhaust gas flows backward. Block.
A known device for preventing the intrusion of rainwater and the influence of back wind is attached to the tops of the air supply duct 1 and the exhaust duct 2, but they are not shown.

The operation of the above embodiment will be described below. In the case of the first embodiment, the air flowing in from the air supply duct 1 is provided for combustion via the air supply pipe 4 of the combustion appliance 3 on each floor, and the exhaust gas is collected from the exhaust pipe 5 into the exhaust duct 2 all. Dispersed outside the building. In the case of the second embodiment (claim 2), all the air flowing in from the air supply duct 1 is provided to the combustion via the air supply pipe 4 of the combustion appliance 3 on each floor, and the exhaust gas is directly supplied from the exhaust pipe 5 to the existing exhaust pipe. Dispersed outside the building via the U-duct 50. In the case of Example 3 (claim 3),
The air in the existing U-duct 50 is introduced into the combustion instrument 3 via the air supply pipe 4, and the exhaust gas is diffused outside the building from the exhaust pipe 5 via the exhaust duct 2.

[0016]

As described above, according to the present invention, in the existing housing complex, two air supply / exhaust ducts are inserted into the existing common ducts (U-ducts / SE ducts), respectively, and the combustion appliances Supply and exhaust pipes were connected to separate supply and exhaust. As a result, the following effects are achieved. a. You can easily install the air supply / exhaust equipment of the air supply / exhaust separation type without modifying the common duct of the existing housing complex. b. Since the lower the oxygen concentration, the more air is used, it was necessary to use a combustion instrument that burns at a low oxygen concentration, but this is no longer necessary. c. In each home, you can use high-performance combustion appliances that could not be used by connecting to the existing common duct. d. In the case of claims 2 and 3, since one air supply duct or exhaust duct is simply inserted into the existing common duct, the construction cost is reduced.

[Brief description of drawings]

FIG. 1 is an explanatory view of a supply / exhaust facility constructed according to the present invention.

FIG. 2 is an explanatory view of a construction example of the present invention.

FIG. 3 is an explanatory view of a construction example of the present invention.

FIG. 4 is an explanatory view of a construction example of the present invention.

FIG. 5 is an explanatory view of a construction example of the present invention.

FIG. 6 is an explanatory view of a construction example of the present invention.

FIG. 7 is an explanatory view of a construction example of the present invention.

FIG. 8 is an explanatory diagram of a construction example of the present invention.

FIG. 9 is an explanatory view of a construction example of the present invention.

FIG. 10 is an explanatory diagram of a construction example of the present invention.

FIG. 11 is an explanatory diagram of an exhaust top.

FIG. 12 is a plan view of an exhaust top.

FIG. 13 is an explanatory diagram of an embodiment in which a backflow prevention damper is attached to an exhaust pipe.

FIG. 14 is an explanatory diagram of a U-duct.

FIG. 15 is an explanatory diagram of an SE duct.

FIG. 16 is an explanatory diagram of an FF type combustion instrument.

[Explanation of symbols] 1 air supply duct 2 exhaust duct 3 FF type combustion instrument 4 air supply pipe 4a air supply top 5 exhaust pipe 5a exhaust top 6 supply / exhaust port 7 major 8 bulkhead 9 mount 10 rivet 11 rope 12 top part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuichi Tanaka 1-3-25-410 Kishiya, Tsurumi-ku, Yokohama-shi, Kanagawa

Claims (4)

[Claims] 1. An air supply duct and an exhaust duct are inserted from the top into an existing common duct. The existing common duct in the apartment house is connected to the air supply duct of the FF type combustion appliance through the existing air supply / exhaust port of each floor, and the exhaust pipe is connected to the exhaust duct. Method to remodel the air supply and exhaust equipment for combustion appliances. 2. An air supply duct is inserted from the top into an existing common duct, and an air supply pipe of an FF type combustion appliance is connected to the air supply duct via an existing air supply / exhaust port on each floor, and exhaust is also provided. A method of converting an existing common duct in an apartment house into an FF type air supply / exhaust system for combustion appliances, characterized by opening the top of the pipe into the existing common duct. 3. An exhaust duct is inserted from the top into an existing common duct, and the exhaust pipe of the FF type combustion appliance is connected to the exhaust duct via the existing supply / exhaust ports on each floor. A method of converting an existing shared duct in an apartment house into an air-supply / exhaust system for FF type combustion appliances, characterized by opening the top into an existing shared duct. 4. A method for remodeling an existing common duct in an apartment house as an FF type combustion appliance air supply / exhaust facility, wherein a backflow prevention damper is attached to a part of an exhaust pipe.