JPS596197Y2 - Outdoor bathtub - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a bathtub installed outdoors, and particularly to the combustion of the burner during windy conditions.

A bathtub of this type has already been disclosed in Japanese Utility Model Publication No. 14852/1983.

In this device, the primary air hole portion of the burner is provided in a burner mechanism portion that accommodates a valve device, etc., and this burner mechanism portion is provided separated from a combustion chamber or a cavity having a combustion chamber.

In this way, when the burner combustion section and the primary air suction section are provided in two separate chambers, poor combustion occurs during windy conditions.

This is because when there is wind, depending on the wind direction, an abnormal pressure difference may occur between the primary air suction port and the combustion section due to the wind pressure through the exhaust stack, etc., and this may cause phenomena such as lifting and packfire.

In order to eliminate such combustion defects, the present invention aims to prevent an abnormal pressure difference from occurring between the combustion section and the primary air hole section.

The technical means of the present invention for solving the above-mentioned problems is a small chamber that connects the primary air hole and the combustion section, houses a heat exchanger, and has a cavity equipped with the combustion section and a small chamber equipped with a valve device, etc. This is because an intake hole is provided at the top of the hood.

The above technical means of the present invention interact as follows.

The air necessary for combustion in the burner is sucked in from above and descends, and during this time it reaches the primary air suction hole while cooling the valve device in the chamber (small chamber) that has the primary air hole. On the other hand, the secondary air descends from above the chamber housing the combustion section and the heat exchanger, and a portion of it reaches the combustion section while air-cooling the partition plates.

Here, if a condition occurs where an abnormal pressure difference occurs due to wind pressure between the combustion part side and the primary air hole side when there is wind, since both parts are in communication with each other, there will be a balance and no pressure difference will occur. It happens.

From the above-mentioned effects of the above-mentioned technical means, the present invention has the following unique effects.

(1) Since no abnormal pressure difference occurs between the small chamber having the primary air hole portion and the air comprising the combustion portion, poor combustion during windy conditions due to such causes can be eliminated.

(2) The air sucked into the device is sucked at the top of the device, cools the valve device, etc., and then descends until it reaches the combustion section or primary air suction hole, so it is stored in the small chamber of the valve device, etc. Overheating of control parts can be prevented.

Hereinafter, embodiments of the present invention will be described based on the drawings.

An embodiment of the present invention is shown in FIG. 1. The main body 1 of the device is divided into two chambers by a partition plate 2. The small chamber 3 at the front accommodates control parts such as a valve device 4, and the larger empty chamber 5 A bath heat exchanger 6 and a water heater heat exchanger 7 are housed in parallel.

Burners 8 and 9 are disposed below these heat exchangers, respectively, and the primary air hole 10 of the burner 8 located below the heat exchanger 9 opens into the small chamber 3 beyond the partition plate 2, and the valve device This corresponds to the nozzle 12 of the manifold 11 connected to the nozzle 4.

A through hole 13 is opened in the upper part of the partition plate 2 to communicate the small chamber 3 and the empty chamber 5, and on the other hand, an intake hole 14, 14 with an armor plate is bored in the upper part of the outer wall of the instrument body 1.

Further, an exhaust collecting box 15 is provided above the empty chamber 5 and integrally covers the upper ends of the heat exchangers 6 and 7, and an exhaust pipe 16 extending upwardly passes through the top plate of the appliance body 1. Further, the upper part of the exhaust pipe has a plurality of exhaust ports 17, 17 on the side wall.
An exhaust top 18 having a shape is attached.

In the bathtub with water heater of the above structure, combustion air flows in through the intake holes 14 and 14 formed in the upper part of the outer wall of the appliance body 1, and combustion exhaust gas rises inside the heat exchangers 6 and 7 and is exhausted. Collection box 1
5 through the exhaust pipe 16 into the exhaust top 18, and is discharged from the side wall outlet 17.17.

Here, if there is wind from the rear side wall 19 side while the burner 8 is burning, the inside of the appliance body 1 is divided into two chambers by the partition plate 2, so the pressure on the empty chamber 5 side tends to become high, but the In the case of the example, since the through hole 13 is bored in the partition plate 2, the small chamber 3 and the empty chamber 5 are balanced through the through hole and have the same pressure condition.

Therefore, the pressure in the primary air hole 10 of the burner 8 is low, and the pressure in the combustion part 20 does not become high, and overflow of raw gas from the primary air hole 10 or poor combustion due to such causes is prevented.

Furthermore, due to the structure of the equipment, the burner 8 and heat exchanger 6 are placed in the empty chamber 5, and the control parts are installed in the small chamber 3, so that the control parts that are frequently repaired and inspected can be removed by simply removing the front wall 21. This makes it easier to repair and inspect these joints.

In addition, since the chamber 5 side accommodates the combustion device, it is under high temperature conditions, but the valve device 4 and the like, which have poor heat resistance, are located on the small chamber 3 side, which is insulated by the partition plate 2. This improves the durability of the equipment.

In particular, since the through hole 13 of the partition plate 2 and the intake hole 14.14 at the upper part of the front wall 21 are located near the valve device 4, the valve device is 5, the effect is further improved.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of an embodiment of the present invention, and in the figure, 1...
...Appliance body, 2...Partition plate, 3...
・Small chamber, 5... Vacancy, 6... Heat exchanger, 10... Primary air hole, 13... Through hole, 14... ...Intake hole.

Claims (1)

[Scope of utility model registration request] The inside of the appliance main body 1 is divided into a small chamber 3 that accommodates control parts and opens the primary air hole section 10 of the burner, and a cavity 5 that accommodates the combustion section of the burner and a corresponding heat exchanger 6, etc., A through hole 13 of an appropriate size is bored in the partition plate 2 serving as the partition wall, and a through hole 13 of an appropriate size is made to communicate the small chamber 3 and the empty chamber 5.
An outdoor bathtub characterized by having a plurality of intake holes 14, 14 bored in the upper part of the outer wall of the bathtub.