Pressurized hot water boiler

Abstract

The utility model discloses a pressure hot water boiler, comprising a pressure hot water boiler body, the pressure hot water boiler body comprising a heat exchange cavity and a combustion chamber arranged in sequence from top to bottom, a boiler heat exchange coil arranged in the heat exchange cavity, one end of the combustion chamber connected to a burner, the other end of the combustion chamber connected to a flue gas exhaust pipe, a filtering energy saver arranged in the middle of the flue gas exhaust pipe, and solving the problems of the existing pressure hot water boiler not reusing waste heat flue gas, low energy utilization rate and high energy consumption.

Description

Technical Field

[0001] The utility model relates to the field of boiler equipment, in particular to a pressure hot water boiler. Background Art

[0002] A pressurized hot water boiler is a type of boiler. The existing pressurized hot water boiler is mainly composed of a burner, a boiler body and a smoke exhaust pipe. For details, please refer to the solution disclosed in the utility model patent with application number "CN202122318620.8".

[0003] From the above structure, it can be seen that the existing commonly used pressurized hot water boiler has a mature structure and can stably generate water vapor, but there are still some problems, that is, the energy consumption is generally large. After heat exchange in the boiler, the flue gas is directly discharged without being reused, which results in high energy consumption and no energy saving. Utility Model Content

[0004] The utility model aims to provide a pressure hot water boiler to solve the problems of the existing pressure hot water boilers not reusing the waste heat flue gas, low energy utilization rate and high energy consumption.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A pressure hot water boiler comprises a pressure hot water boiler body, wherein the pressure hot water boiler body comprises a heat exchange cavity and a combustion chamber which are arranged in sequence from top to bottom, wherein a boiler heat exchange coil is arranged in the heat exchange cavity, wherein one end of the combustion chamber is connected to a burner, and the other end of the combustion chamber is connected to a flue gas exhaust pipe, wherein a filtering economizer is arranged in the middle of the flue gas exhaust pipe.

[0007] A filter-type energy saver is provided in the middle of the flue gas exhaust pipe. The filter-type energy saver can not only filter the flue gas, but also recycle the waste heat. Such a structure can utilize energy more effectively and has a higher energy utilization rate.

[0008] As a further preferred embodiment of the present invention, heat exchange fins are evenly arranged on the outside of the tube wall of the boiler heat exchange coil.

[0009] The setting of heat exchange fins can reduce the flue gas flow rate and increase the contact area, which can complete heat exchange more quickly and evenly.

[0010] As a further preferred embodiment of the present invention, staggered slow-flow baffles are evenly arranged inside the tube wall of the boiler heat exchange coil.

[0011] The liquid flow rate in the boiler heat exchange coil is reduced, which can better complete the heat exchange work in the pressurized hot water boiler body and fully heat the water.

[0012] As a further preferred embodiment of the present invention, the bottom of the pressurized hot water boiler body is suspended on a concrete foundation through a steel frame.

[0013] The temperature inside the combustion chamber is too high. Although a thermal insulation layer is set outside the pressure hot water boiler body, a steel frame is used for overhead support to protect the concrete foundation from the high temperature of the pressure hot water boiler body.

[0014] As a further preferred embodiment of the present invention, the filtering economizer comprises a filter chamber and an energy-saving chamber arranged in sequence from front to back, filter screens are evenly arranged in the filter chamber, and an economizer heat exchange coil is arranged in the energy-saving chamber.

[0015] The filter plate can effectively filter the smoke, reduce the speed of the smoke entering the energy-saving cavity, and better utilize the energy in the energy-saving cavity.

[0016] As a further preferred embodiment of the present invention, a static pressure slow flow chamber is also provided at the front end of the filter chamber.

[0017] The flue gas velocity is effectively reduced through the static pressure slow flow chamber before filtration, which is not only more conducive to the utilization of waste heat, but also reduces the impact of flue gas on the filter screen. Moreover, since a large part of the dust in the flue gas can be deposited in the static pressure slow flow chamber, the service life of the filter screen can be effectively extended, and the flue gas entering the energy-saving chamber is cleaner, and it is not easy for too much smoke and dust to adhere to the heat exchange coil of the economizer and affect the heat exchange efficiency.

[0018] As a further preferred embodiment of the present invention, the steam discharge pipe of the pressurized hot water boiler body is connected to the water distribution cylinder.

[0019] Compared with the prior art, the utility model can achieve at least one of the following beneficial effects:

[0020] 1. A filter-type energy saver is installed in the middle of the flue gas exhaust pipe. The filter-type energy saver can not only filter the flue gas, but also recycle the waste heat. Such a structure can utilize energy more effectively and achieve higher energy utilization rate.

[0021] 2. The setting of heat exchange fins can reduce the flue gas flow rate and increase the contact area, which can complete heat exchange more quickly and evenly.

[0022] 3. The liquid flow rate in the boiler heat exchange coil is reduced, which can better complete the heat exchange work in the pressurized hot water boiler body and make the water fully heated.

[0023] 4. The temperature inside the combustion chamber is too high. Although a thermal insulation layer is set outside the pressure hot water boiler body, a steel frame is used for overhead support to protect the concrete foundation from the high temperature of the pressure hot water boiler body.

[0024] 5. The filter plate can effectively filter the flue gas and reduce the speed at which the flue gas enters the energy-saving chamber, so that the energy in the energy-saving chamber can be better utilized.

[0025] 6. The flue gas velocity is effectively reduced through the static pressure slow flow chamber before filtering, which is not only more conducive to the utilization of waste heat, but also reduces the impact of flue gas on the filter screen. Moreover, since a large part of the dust in the flue gas can be deposited in the static pressure slow flow chamber, it can effectively extend the service life of the filter screen and make the flue gas entering the energy-saving chamber cleaner, and it is not easy for too much smoke and dust to adhere to the heat exchange coil of the economizer and affect the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the utility model.

[0027] Figure 2 It is a cross-sectional view of the boiler heat exchange coil of the utility model.

[0028] Figure 3 This is a schematic diagram of the structure of a filter-type energy saver. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Specific embodiment 1:

[0036] Figure 1 , Figure 2 , Figure 3 A pressure hot water boiler is shown, comprising a pressure hot water boiler body 1, wherein the pressure hot water boiler body 1 comprises a heat exchange chamber 11 and a combustion chamber 12 arranged in sequence from top to bottom, wherein a boiler heat exchange coil 2 is arranged in the heat exchange chamber 11, wherein one end of the combustion chamber 12 is connected to a burner 3, and the other end of the combustion chamber 3 is connected to a flue gas exhaust pipe 4, wherein a filtering economizer 5 is arranged in the middle of the flue gas exhaust pipe 4.

[0037] A filter-type energy saver is provided in the middle of the flue gas exhaust pipe. The filter-type energy saver can not only filter the flue gas, but also recycle the waste heat. Such a structure can utilize energy more effectively and has a higher energy utilization rate. Specific embodiment 2:

[0039] This embodiment further illustrates the boiler heat exchange coil 2 on the basis of the specific embodiment 1. Heat exchange fins 6 are evenly arranged on the outer wall of the boiler heat exchange coil 2 .

[0040] The setting of heat exchange fins can reduce the flue gas flow rate and increase the contact area, which can complete heat exchange more quickly and evenly. Specific embodiment 3:

[0042] This embodiment further illustrates the boiler heat exchange coil 2 on the basis of the specific embodiment 2. The interior of the tube wall of the boiler heat exchange coil 2 is evenly provided with staggered slow flow baffles 7.

[0043] The setting of heat exchange fins can reduce the flue gas flow rate and increase the contact area, which can complete heat exchange more quickly and evenly. Specific embodiment 4:

[0045] This embodiment further illustrates the pressure-bearing hot water boiler body 1 on the basis of the specific embodiment 1. The bottom of the pressure-bearing hot water boiler body 1 is suspended on a concrete foundation through a steel frame.

[0046] The temperature inside the combustion chamber is too high. Although a thermal insulation layer is set outside the pressure hot water boiler body, a steel frame is used for overhead support to protect the concrete foundation from the high temperature of the pressure hot water boiler body. Specific embodiment 5:

[0048] This embodiment further illustrates the filter-type energy saver 5 based on the specific embodiment 1. The filter-type energy saver 5 includes a filter chamber 51 and an energy saving chamber 52 arranged in sequence from front to back. The filter chamber 51 is evenly provided with filter screen plates, and the energy saving chamber 52 is provided with an energy saver heat exchange coil.

[0049] The filter plate can effectively filter the smoke, reduce the speed of the smoke entering the energy-saving cavity, and better utilize the energy in the energy-saving cavity. Specific embodiment 6:

[0051] This embodiment further illustrates the filter chamber 51 on the basis of the specific embodiment 5. A static pressure slow flow chamber 53 is further provided at the front end of the filter chamber (51).

[0052] The flue gas velocity is effectively reduced through the static pressure slow flow chamber before filtration, which is not only more conducive to the utilization of waste heat, but also reduces the impact of flue gas on the filter screen. Moreover, since a large part of the dust in the flue gas can be deposited in the static pressure slow flow chamber, the service life of the filter screen can be effectively extended, and the flue gas entering the energy-saving chamber is cleaner, and it is not easy for too much smoke and dust to adhere to the heat exchange coil of the economizer and affect the heat exchange efficiency. Specific embodiment 7:

[0054] This embodiment further illustrates the pressure hot water boiler body 1 on the basis of the specific embodiment 5. The steam discharge pipe of the pressure hot water boiler body 1 is connected to the water distribution cylinder.

[0055] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pressure hot water boiler, comprising a pressure hot water boiler body (1), the pressure hot water boiler body (1) comprising a heat exchange chamber (11) and a combustion chamber (12) arranged in sequence from top to bottom, a boiler heat exchange coil (2) arranged in the heat exchange chamber (11), one end of the combustion chamber (12) being connected to a burner (3), and the other end of the combustion chamber (12) being connected to a flue gas exhaust pipe (4), characterized in that: A filtering energy saver (5) is provided in the middle of the smoke exhaust pipe (4).

2. The pressurized hot water boiler according to claim 1, characterized in that: Heat exchange fins (6) are evenly arranged on the outside of the tube wall of the boiler heat exchange coil (2).

3. The pressurized hot water boiler according to claim 2, characterized in that: The interior of the tube wall of the boiler heat exchange coil (2) is evenly and staggeredly provided with slow-flow baffles (7).

4. The pressurized hot water boiler according to claim 1, characterized in that: The bottom of the pressure hot water boiler body (1) is suspended on a concrete foundation via a steel frame.

5. The pressure hot water boiler according to claim 1, characterized in that: The filtering economizer (5) comprises a filtering chamber (51) and an energy-saving chamber (52) which are arranged in sequence from front to back, wherein filtering screen plates are evenly arranged in the filtering chamber (51), and an economizer heat exchange coil is arranged in the energy-saving chamber (52).

6. The pressure hot water boiler according to claim 5, characterized in that: A static pressure slow flow chamber (53) is also provided at the front end of the filter chamber (51).

7. The pressurized hot water boiler according to claim 1, characterized in that: The steam discharge pipe of the pressure hot water boiler body (1) is connected to the water distribution cylinder.

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