JPH04122934U - oil hot water boiler - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent incomplete combustion in oil-fired hot water boilers. [Structure] There is an air supply and exhaust pipe 2 at the top of the main body 1. There are two hot water boilers 3A and 3B inside the main body 1. At the bottom of the hot water boilers 3A and 3B are blowers supported by supports 7a and 7b.
There are 6a, 6b and burners 8a, 8b. There is an air supply path 4 having air supply pipe connection ports 4a, 4b in the upper part of the main body 1, and air supply pipes 5a, 5b connect the air supply pipe connection ports 4a, 4b to the blowers 6a, 6b. Exhaust gas from the hot water boilers 3A and 3B passes through the exhaust path 9 and is discharged from the upper exhaust port 9a. Dampers 10a and 10b are provided in the air supply path 4. The dampers 10a, 10b are opened in response to the operation of the hot water boilers 3A, 3B.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to an oil-fired hot water boiler, and more specifically, This invention relates to means for preventing incomplete combustion due to backflow of exhaust gas.

0002

[Conventional technology]

For example, as shown in FIG. 3, an oil-fired hot water boiler has two boilers 3A in the main body 1. , 3B are installed in parallel. There is a supply and exhaust pipe 2 at the top of the main body 1, and a boiler 3A , 3B is provided in the upper part of the main body 1 from the air supply port 2a of the supply and exhaust pipe 2. After the air is taken into the air supply path 4 that is Each boiler is It is supplied from the bottom of 3A and 3B. And boilers 3A, 3B The exhaust (gas) is in the exhaust passage 9 provided at the upper part between the two boilers 3A and 3B. The gases are merged at the air supply and exhaust pipe 2 and discharged from the exhaust port 9a of the air supply and exhaust pipe 2. Also, two Boilers 3A and 3B can now operate either one or both at the same time. ing.

0003

[Problem that the idea aims to solve]

However, in the conventional example, one air supply path 4 and two boilers 3A, 3B are connected. Air supply pipes 5a and 5b are connected between them, and the upper part of the boiler is connected with one exhaust passage 9. Therefore, an annular air passage is formed between the two boilers 3A and 3B. the Therefore, for example, when boiler 3A is operating and boiler 3B is stopped, two A pressure difference occurs between the boilers 3A and 3B. Then, due to the pressure difference, a void is generated. A part of the exhaust gas from the boiler 3A side passes through the exhaust path 9 from the top to the bottom of the boiler 3B. After flowing backward and rising inside the air supply pipe 5b, it is taken in from the air supply port 2a of the air supply and exhaust pipe 2. It will flow together with the air to the burner 3A side where combustion is in progress, and the boiler 3A side will not be in combustion. A problem arises in that the sufficient amount of oxygen required is insufficient, causing incomplete combustion. did Therefore, in this invention, we provide an oil-fired hot water boiler that solves these problems. It is intended to.

0004

[Means to solve the problem]

This invention was devised to solve the above problems, and it is equipped with an air supply and exhaust pipe. Two boilers are installed in parallel inside the main body, and the air is taken into the supply path from the air supply port of the supply and exhaust pipe. The air is supplied to the two boilers through the air supply pipes corresponding to each boiler. The exhaust gas discharged from the top of these two boilers is combined into one exhaust passage. In an oil-fired hot water boiler, the oil is discharged from the exhaust port of the supply and exhaust stack. , a damper for preventing exhaust backflow corresponding to the two boilers is installed in the air supply path. , the same damper was opened in response to the boiler being operated.

[0005]

[Effect]

With the above configuration, each boiler is placed in the air supply path that supplies air to the two boilers. A damper is installed to prevent backflow of exhaust gas, and these two dampers are Both are designed to be opened according to the boiler being operated, so either one When only one boiler is operating, the damper corresponding to the other boiler is closed. It will be done. Therefore, the exhaust gas from the boiler that is in operation flows back into the boiler that is not in operation, causing the There is no possibility that the water will circulate to the boiler side during rotation.

[0006]

【Example】

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. Figure 1 shows oil-drilled hot water. This is a side sectional view of the main parts of the boiler. 1 is the main body with the supply and exhaust pipe 2 on the top, 3A and 3B are the main parts. Boilers 4 are arranged in parallel in the body 1, and 4 is an air supply path divided in the upper part of the body 1; There is an air supply port 2a in the center of the section, and air supply pipe connection ports 4a and 4b are provided on the left and right sides of the lower part. child The air supply pipe connection ports 4a and 4b are used to supply air in the air supply path 4 to the boilers 3A and 3B. One end of air supply pipes (tubes made of rubber, etc.) 5a and 5b are connected, and the other end is are the intake ports of blowers 6a and 6b provided at the bottom of boilers 3A and 3B, respectively. connected to the side. These blowers 6a and 6b are each mounted on a support fixed to the main body 1. It is supported by holders 7a and 7b, and also includes blowers 6a and 6b and boiler 3A. , 3B are provided with burners 8a and 8b, respectively. 9 is boiler 3 This is an exhaust path that is shared by both A and 3B, and its exhaust port 9a is connected to the supply and exhaust pipe 2. It is directed towards the top of the inside.

[0007] By the way, in this embodiment, the air supply pipe connection ports 4a and 4b in the air supply path 4 are Dampers 10a and 10b are provided for preventing backflow of exhaust gas. these dampers 10a and 10b are thin shells that open and close according to the operating boilers 3A and 3B. It is made of a sheet-shaped material, and its upper part is rotatably supported. therefore, Either or both of the boilers 3A and 3B are started, and the blowers 6a and 6b are turned on. When one or both of the dampers start operating, a pressure difference is created before and after the damper. , the damper opens as shown by the dashed line as the air flows. Inside main body 1 In addition, there is a hot water pump and control unit for circulating hot water. , illustration and description of these will be omitted.

[0008] Figure 2 shows the relationship between the operation of boilers 3A and 3B and the operation of dampers 10a and 10b. It is. According to this, when the boilers 3A and 3B are operated, the damper 10a, 10b are both opened, and the air in the air supply path 4 is sucked by the blowers 6a and 6b. It is supplied to the burners 8a and 8b, but only one of the two boilers 3A and 3B is supplied. If one boiler is out of operation, the damper on that side is closed. Also, when both boilers 3A and 3B are stopped, the two dampers 10a and 10 b are closed together.

[0009] In this way, the two dampers 10a and 10b open as the boilers 3A and 3B operate. For example, boiler 3A is stopped and only boiler 3B is operating. In this case, the damper 10a is in the closed state, so the exhaust is discharged from the top of the boiler 3B. It becomes difficult for the exhaust gas to flow back to the boiler 3A side, and the exhaust gas is circulated between boilers 3B and 3A. All the exhaust gas is discharged from the exhaust port 2a.

0010

[Effect of the idea] If it is an oil-fired hot water boiler as explained above, which one of the two boilers is it? When one of the two is in operation and the other is out of operation, The air inlet on the side of the Exhaust gas will not flow back and circulate to the boiler side when the operation is stopped. . Therefore, there is no risk of incomplete combustion occurring on the boiler side during operation, making it safer. This is an oil-fired hot water boiler with high combustion efficiency.

[Brief explanation of drawings]

FIG. 1 is a side cross-sectional view of essential parts of an oil-fired hot water boiler showing an embodiment of the present invention.

FIG. 2 is a diagram showing the operational relationship between a boiler and a damper according to an embodiment of the present invention.

FIG. 3 is a sectional side view of a main part of an oil-fired hot water boiler showing a conventional example.

[Explanation of symbols] 1 Main body 2 Supply and exhaust pipe 2a Air supply port 3A boiler 3B Boiler 4 Air supply path 5a Air supply pipe 5b Air supply pipe 6a blower 6b blower 7a Support 7b Support 8a burner 8b burner 9 Exhaust path 9a Exhaust port 10a damper 10b damper

Claims (1)

[Scope of utility model registration request] Claim 1: Two boilers are installed in parallel in a main body equipped with an air supply and exhaust pipe, and air taken into an air supply passage from an air supply port of the air supply and exhaust pipe is transferred to an air supply pipe corresponding to each boiler. In an oil-fired hot water boiler, the oil-fired hot water boiler is supplied to the two boilers via An oil-fired hot water boiler, characterized in that a damper for preventing backflow of exhaust gas corresponding to the two boilers is provided in the air supply path, and the damper is opened in accordance with the boiler being operated.