JP2513007Y2 - Baffler device for single exhaust stack in gas appliances - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a single exhaust baffler device for a gas appliance, which is used, for example, for exhausting a gas burner for a bathtub or the like.

[Conventional technology]

In a conventional baffle device of this type, as shown in FIG. 3, a secondary exhaust pipe 12 is connected to the upper opening 11 of the tubular body 1 and the primary exhaust pipe 3 is surrounded by the lower opening 12. It is fitted inside through the extra space S, and the baffle plate 4 is installed above the tip of the primary exhaust pipe 3 in the cylindrical body 1 to prevent the influence of the back wind from the secondary exhaust pipe on the burner portion. , A temperature switch 6 is installed in the spare space S, (1). When the secondary exhaust pipe is clogged, or (2). When a backflow of waste gas (from the primary waste pipe) occurs due to the backwind of the secondary exhaust pipe (hereinafter, these (1)
The states of (2) and (2) are described as "at the time of abnormality"), the temperature switch 6 was operated, and the raw gas supply valve of the burner part G was closed.

[Problems to be solved by the device]

However, in such a baffle device in the related art, the temperature switch 6 is installed at the lower end of the spare space S of the cylindrical body 1 and the switch 6 is operated by natural backflow of the exhaust gas at the time of abnormality. Therefore, the waste gas is diluted by the air in the tubular body 1 and the temperature is likely to drop. As a result, it is difficult to increase the operating temperature of the temperature switch, and thus it is difficult to obtain the accuracy of the temperature switch 6. I had.

The problem of this invention is to eliminate such inconvenience.

[Means for Solving the Problems]

In order to solve the above-mentioned problems, in a single exhaust cylinder baffler device for a gas appliance according to the present invention, an upper opening and a lower opening having a diameter larger than that of the upper opening are formed in the cylinder, and the primary opening is formed in the lower opening. An exhaust pipe is fitted around the space through a spare space, the primary exhaust pipe is connected to an exhaust outlet of a gas appliance, and a secondary exhaust pipe is connected to the upper opening in an airtight state. A baffle plate is installed above the tip of the primary exhaust pipe in, and a temperature switch is installed in the extra space, and the temperature control switch opens and closes the raw gas supply valve of the gas appliance. In the apparatus, a guide plate is installed in the extra space along the primary exhaust pipe.

It should be noted that the tip portion of the guide plate may be formed so as to be inclined toward the front of the primary exhaust pipe, or
The temperature switch may be installed on the guide plate.

[Function of device]

Since the baffle device for a single exhaust pipe in the gas appliance according to the present invention is configured as described above, that is, since the guide plate is installed in the spare space along the primary exhaust pipe, the waste air at the time of the abnormality is Since the gas flows backward along the guide plate, it is difficult for the exhaust gas to mix with the back wind in the cylinder, and thus the temperature does not easily decrease.

Further, in the device for disassembling the present invention, since the exhaust gas having substantially the same temperature can reach the temperature switch both when the secondary exhaust pipe is closed and when the wind blows backward, the operating temperature of the temperature switch is set. As a result, the safety device is highly reliable and less likely to malfunction.

If the tip of the guide plate is formed so as to be inclined toward the front of the primary exhaust pipe, the exhaust gas can flow more smoothly along the guide plate.

Further, if the temperature switch is attached to the guide plate, the guide plate and the temperature switch can be unitized, and the assembling work of these can be simplified.

[Explanation of Example]

As an embodiment of the present invention, a baffle device of a burner device for a bathtub is adopted, which will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a tubular body of the baffle device B. The tubular body 1 has an upper opening 11 and a lower opening 12 having a diameter larger than that of the upper opening 11. A secondary exhaust pipe 2 is connected to the upper opening 12 of the cylindrical body 1 in an airtight state. The secondary exhaust pipe 2 extends outside from a bathroom (not shown). Reference numeral 3 denotes a primary exhaust pipe, which is fitted in the lower opening 12 of the cylindrical body 1 through a spare space S. The primary exhaust pipe 3 is connected to the exhaust port of the burner device G of the bath kettle. Therefore, the exhaust gas of the burner device G passes through the primary exhaust pipe 3 to the baffle device B, and is discharged from the secondary exhaust pipe 2 to the outside. The lower opening 12 of the cylinder 1 acts as an intake port, and during normal combustion,
The indoor air is drawn in by the draft effect of waste gas. Reference numeral 4 is a baffle plate, which is a primary exhaust pipe 3 in the cylindrical body 1.
It is installed above the tip of the. The baffle plate 4 prevents backwind from the secondary exhaust pipe 2 from reaching the primary exhaust pipe 3.
Further, since the lower surface 41 of the baffle plate 4 is formed in a curved convex shape, the waste gas from the primary exhaust pipe 3 smoothly flows toward the secondary air pipe 2 despite the presence of the baffle plate 4. .

Next, 5 is a guide plate, which is fixed to the inner wall surface of the cylindrical body 1 via a mounting portion 51. The guide plate 5 extends along the primary exhaust pipe 3 in the extra space S. The tip portion of the guide plate 5 is bent and extends obliquely toward the front of the primary exhaust pipe 3. The bent portion of the guide plate 5 guides the flow of the exhaust gas from the primary exhaust pipe 3 to the temperature switch 6 in the downward direction when an abnormality occurs in the secondary exhaust pipe 2. Reference numeral 6 denotes a temperature switch, which is installed at the root (lower end) of the guide plate 5 in the spare space S. The temperature switch 6 is operated by the temperature of the exhaust gas, and the raw gas supply valve of the gas burner G is closed via an electric circuit (not shown). Reference numeral 53 is a ventilation window, which is formed in the mounting portion 51 of the guide plate 5. This ventilation window 53 is for preventing the performance of the baffle B from being deteriorated.

Further, the guide plate 5 does not necessarily have to be bent at its tip.

Next, the operation of this baffle device B will be described.

(1). During normal combustion, since the room temperature air is sucked from the intake port (lower opening 12) by the draft effect of the high temperature exhaust gas discharged from the primary exhaust pipe 3, the temperature detection switch 6 is not heated and therefore the burner is burned. G continues normal combustion.

(2). When the secondary exhaust pipe 2 is blocked, the high temperature exhaust gas is filled in the cylinder body 1, and the exhaust gas leaks from the intake port (the lower opening 12) (see the phantom arrow in FIG. 1).
Occurs, the temperature detection switch 6 is activated by this waste gas, and the raw gas supply valve of the gas burner G is closed via the electric circuit.

(3). When a back wind is generated in the secondary exhaust pipe 2, low-temperature (atmospheric temperature) air enters the cylindrical body 1 from the secondary exhaust pipe 2 (see the phantom line arrow in FIG. 2), and high temperature. The gas is diluted and discharged from the intake port (lower opening 12),
In the device of this invention, since the guide plate 5 is provided in the cylindrical body 1, it is possible to easily guide the high temperature waste gas to the temperature detection switch 6 (see the imaginary line arrow in FIG. 2). As a result, the switch 6 can be actuated to close the raw gas supply valve of the gas burner G.

[Effect of device]

A baffle device for a single exhaust pipe in a gas appliance according to the present invention has an upper opening and a lower opening having a diameter larger than that of the upper opening formed in a cylindrical body, and a primary exhaust pipe is provided around the lower opening with a margin space. And the primary exhaust pipe is connected to the exhaust outlet of the gas appliance, and the secondary exhaust pipe is connected to the upper opening in an airtight state, and further above the tip of the primary exhaust pipe in the cylindrical body. A baffle device for a single exhaust pipe in a gas appliance, in which a baffle plate is installed, a temperature switch is installed in the extra space, and the raw gas supply valve of the gas appliance is opened and closed by the temperature switch, the primary space is provided in the extra space. Since the guide plate is installed along the exhaust pipe, the waste gas at the time of the abnormality flows backward along the guide plate, so that the waste gas is less likely to mix with the back wind in the cylinder. One in which time is difficult to decline.

Therefore, by using the baffle device of the present invention, the operating temperature of the temperature switch can be easily taken high, and as a result, the difference between the room temperature and the exhaust gas temperature becomes large, so that the reliability of the safety device can be improved.

Further, in the baffle device of the present invention, the operating temperature of the temperature switch can be set because the exhaust gas having substantially the same temperature can reach the temperature switch both when the secondary exhaust pipe is closed and when wind blows. As a result, the safety device is highly reliable and less likely to malfunction.

If the tip of the guide plate is formed so as to be inclined toward the front of the primary exhaust pipe, the exhaust gas can flow more smoothly along the guide plate.

Further, if the temperature switch is attached to the guide plate, the guide plate and the temperature switch can be unitized, and the assembling work of these can be simplified.

[Brief description of drawings]

 FIGS. 1 and 2 show an embodiment of the present invention. FIG. 1 is a sectional view when the secondary discharge pipe is closed, FIG. 2 is a sectional view when a back wind is generated, and FIG. It is sectional drawing of a prior art example. 1 ... Cylinder 11 ... Upper opening 12 ... Lower opening 2 ... Secondary exhaust pipe 3 ... Primary exhaust pipe 4 ... Baffle plate 5 ... Guide plate 6 ... Temperature switch B ... Baffler device G ... … Burner (gas appliance) S …… Surplus space

Claims (3)

(57) [Scope of utility model registration request] 1. An upper opening and a lower opening having a diameter larger than that of the upper opening are formed in a cylindrical body, and a primary exhaust pipe is fitted in the lower opening through a marginal space and the primary exhaust pipe is attached. The secondary exhaust pipe is connected to the exhaust outlet of the gas appliance, and the secondary exhaust pipe is connected to the upper opening in an airtight state, and a baffle plate is installed above the tip of the primary exhaust pipe in the cylindrical body. A temperature switch is installed in a space, and in a single exhaust pipe baffler device in a gas appliance that opens and closes the raw gas supply valve of the gas appliance by this temperature switch, a guide plate is installed in the spare space along the primary exhaust pipe. , The guide auxiliary plate is connected to the tip of this guide plate,
A baffle device for a single exhaust pipe in a gas appliance, wherein the guide auxiliary plate portion is provided so as to be inclined in a forward direction of the primary exhaust pipe. 2. A single exhaust pipe for a gas appliance according to claim 1, wherein the tip end portion of the guide plate is formed to be inclined toward the front of the primary exhaust pipe. Baffler device. 3. A single exhaust stack baffle device for a gas appliance according to claim 1 or 2, wherein the temperature switch is installed on the guide plate.