Hot water and steam multipurpose electric heating furnace

Abstract

The utility model discloses a hot water steam multipurpose electric heating furnace which comprises an electric heater and a furnace body, and further comprises a cold water collecting pipe, a hot water collecting pipe and at least one coil pipe, water and cold water are stored in an inner cavity of the furnace body, the hot water collecting pipe is in a barrel shape and located above the cold water collecting pipe, a pipe body of the cold water collecting pipe is arranged in the inner cavity of the furnace body, and the coil pipe is arranged in the inner cavity of the furnace body. A cold water inlet end of the cold water collecting pipe is arranged on the outer side of the furnace body, a pipe body of the hot water collecting pipe is arranged in an inner cavity of the furnace body, a hot water outlet end of the hot water collecting pipe is arranged on the outer side of the furnace body, the coil pipe is vertically arranged in the inner cavity of the furnace body in a spiral shape, and a pipe opening in the lower end of the coil pipe is communicated with an inner cavity of the cold water collecting pipe. A pipe opening in the upper end of the coil pipe is communicated with an inner cavity of the hot water collecting pipe, the boiler body is vertically arranged, and a steam outlet is formed in the top end of the boiler body. The multi-heat-source heat supply system can provide hot water media and steam media, the two heat supply media are independent of each other, and the multi-heat-source heat supply requirement of a user is met.

Description

Technical Field

[0001] The utility model relates to an industrial furnace used for heat exchange, in particular to an electric heating furnace which uses electricity for heating and heat exchange, and belongs to the technical field of industrial boilers. Background Art

[0002] Existing electric heating furnaces, such as the one disclosed in Chinese Utility Model Patent ZL201520419928.3, titled "Automated Dual-Circulation Water Pump Electric Heating Furnace," have a structure comprising a housing, hinges, and a cabinet door hinged to one side of the housing via hinges. A water tank is located in the upper portion of the housing, with two spaced-apart circulating water pumps connected to its bottom. A control circuit board is also located within the housing. The water tank includes a lid, a water trough, and several screws, with a circular heater connected to its bottom. A water level gauge is located on the inner wall of the water trough, and a water level display and control panel are located on the cabinet door. The heater terminals, circulating water pump, and control panel are each connected to the control circuit board. This type of electric heating furnace has several drawbacks in practice: It only meets users' heating needs for hot water, resulting in a single function and inability to meet multi-purpose heating needs. Furthermore, most existing electric heating furnaces utilize a tube-sheet structure, which is prone to leakage during operation and exhibits low safety performance. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the existing technology and provide a hot water steam multi-purpose electric heating furnace which can provide both hot water medium and steam medium, and the two heating media are independent of each other, can meet the user's multi-heat source heating needs, and has higher safety performance.

[0004] In order to solve the above technical problems, the utility model adopts such a hot water steam multi-purpose electric heating furnace, comprising an electric heater and a sealed furnace body, wherein the electric heater comprises a plurality of electric heating rods, the electric heating rods are connected to a power source and the rod bodies of the electric heating rods are placed in the inner cavity of the furnace body, the electric heating furnace further comprises a cold water header, a hot water header and at least one coil, water is stored in the inner cavity of the furnace body, the cold water header and the hot water header are in a cylindrical shape and the hot water header is located above the cold water header, the cold water header is in a cylindrical shape and the hot water header is located above the cold water header. The tube body of the manifold is placed in the inner cavity of the furnace body, the cold water inlet end of the cold water manifold is placed outside the furnace body, the tube body of the hot water manifold is placed in the inner cavity of the furnace body, and the hot water outlet end of the hot water manifold is placed outside the furnace body. The coil is arranged upright in a spiral shape in the inner cavity of the furnace body, and the lower end pipe opening of the coil is connected to the inner cavity of the cold water manifold, and the upper end pipe opening of the coil is connected to the inner cavity of the hot water manifold. The furnace body is arranged upright and a steam outlet is installed at the top of the furnace body.

[0005] As a preferred embodiment of the present invention, there are three coils, namely an inner coil, a middle coil and an outer coil. The inner coil, the middle coil and the outer coil are connected in parallel with the cold water header and the hot water header to form a whole.

[0006] As a preferred embodiment of the present invention, the furnace body is formed by welding an upper elliptical head located at the top, a barrel located in the middle and a lower elliptical head located at the bottom. The steam outlet is installed at the top of the upper elliptical head, and several supporting legs are installed at the bottom of the lower elliptical head. A water supply port is provided on the side of the lower elliptical head, a liquid level gauge is provided on the side of the barrel, and a manhole and a safety valve are provided on the upper elliptical head.

[0007] After adopting the above structure, the utility model has the following beneficial effects:

[0008] When the utility model is working, the electric heating rod emits heat after being energized, and the heat is absorbed by the water and coil in the furnace body cavity. The water in the furnace body cavity absorbs the heat to generate steam, which is output from the steam outlet to the outside for users to use for heat exchange. At the same time, the water in the coil cavity absorbs the heat to generate hot water, which is output from the hot water outlet end of the hot water collecting pipe to the outside for users to use for heat exchange. The utility model provides both hot water medium and steam medium at the same time, and the two heating mediums are independent of each other and can be independently controlled, thereby meeting the user's multi-heat source heating needs.

[0009] The utility model abandons the tube plate structure of the traditional heating furnace, has a simpler structure and higher safety performance.

[0010] The utility model adopts electric heating, which does not need to consider environmental emissions and other issues. It is a clean energy source, is easy to maintain, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The specific implementation of the present invention will be further described in detail below with reference to the accompanying drawings.

[0012] Figure 1 This is a structural diagram of the utility model's multi-purpose electric heating furnace for hot water steam. DETAILED DESCRIPTION

[0013] See also Figure 1A multi-purpose electric heating furnace for hot water steam is shown, comprising an electric heater 1 and a sealed furnace body 2, wherein the electric heater 1 comprises a plurality of electric heating rods 1-1, wherein the electric heating rods 1-1 are connected to a power source and the rod bodies of the electric heating rods 1-1 are placed in the inner cavity of the furnace body 2, and the electric heating furnace further comprises a cold water header 3, a hot water header 4 and at least one coil 5, wherein water is stored in the inner cavity of the furnace body 2, which is not shown in the figure, and the cold water header 3 and the hot water header 4 are cylindrical and the hot water header 4 is located above the cold water header 3, the tube body 3-1 of the cold water header 3 is placed in the inner cavity of the furnace body 2, and the cold water inlet end 3-2 of the cold water header 3 is placed in the furnace body 2, the cold water inlet end 3-2 is connected to cold water, preferably tap water, through a pipeline. The pipe body 4-1 of the hot water manifold 4 is placed in the inner cavity of the furnace body 2, and the hot water outlet end 4-2 of the hot water manifold 4 is placed outside the furnace body 2. The hot water outlet end 4-2 outputs hot water to the outside through a pipeline. The coil 5 is arranged upright in a spiral shape in the inner cavity of the furnace body 2, and the lower end pipe end 5a of the coil 5 is connected to the inner cavity of the cold water manifold 3, and the upper end pipe end 5b of the coil 5 is connected to the inner cavity of the hot water manifold 4. The furnace body 2 is arranged upright, and a steam outlet 6 is installed at the top of the furnace body 2. The steam outlet 6 is preferably a flange interface steam outlet. In the present utility model, the electric heater 1 also includes a junction box 1-2. The electric heating rod 1-1 is connected to an external power source via a cable and the junction box 1-2. The rod body of the electric heating rod 1-1 is placed at the bottom of the inner cavity of the furnace body 2.

[0014] As a preferred embodiment of the present invention, Figure 1 As shown, there are three coils 5, namely an inner coil 5-1, a middle coil 5-2 and an outer coil 5-3. The inner coil 5-1, the middle coil 5-2 and the outer coil 5-3 are all cylindrical. The inner coil 5-1, the middle coil 5-2 and the outer coil 5-3 are connected in parallel with the cold water header 3 and the hot water header 4 to form a whole.

[0015] As a preferred embodiment of the present invention, Figure 1 As shown, the furnace body 2 is formed by an upper elliptical head 2-1 located at the upper part, a barrel 2-2 located in the middle part and a lower elliptical head 2-3 located at the lower part, which are connected by welding. The steam outlet 6 is installed at the top of the upper elliptical head 2-1, and a plurality of supporting legs 7 are installed at the lower part of the lower elliptical head 2-3. A water supply port 8 is provided on the side of the lower elliptical head 2-3. When the water in the inner cavity of the furnace body 2 is insufficient, water is added to the inner cavity of the furnace body 2 through the water supply port 8. A liquid level gauge 9 is provided on the side of the barrel 2-2. A manhole 10 for maintenance and a safety valve 11 for releasing steam when the pressure in the furnace body 2 is too high are provided on the upper elliptical head 2-1.

[0016] When the utility model is working, the electric heating rod 1-1 emits heat after being energized, and the heat is absorbed by the water in the inner cavity of the furnace body 2 and the coil 5. The water in the inner cavity of the furnace body 2 absorbs the heat to generate steam, which is output from the steam outlet 6 to the outside for heat exchange by the user. At the same time, the water in the inner cavity of the coil 5 absorbs the heat to generate hot water, which is output from the hot water outlet end 4-2 of the hot water header 4 to the outside for heat exchange by the user.

[0017] After trial, the utility model can provide both hot water medium and steam medium. The two heating media are independent of each other and can be independently controlled, meeting the user's multi-heat source heating needs, and has high safety performance, achieving good practical effects.

Claims

1. A hot water steam multi-purpose electric heating furnace, comprising an electric heater (1) and a sealed furnace body (2), wherein the electric heater (1) comprises a plurality of electric heating rods (1-1), the electric heating rods (1-1) being connected to a power source and the rod bodies of the electric heating rods (1-1) being placed in the inner cavity of the furnace body (2), characterized in that: The electric heating furnace further comprises a cold water header (3), a hot water header (4) and at least one coil (5). Water is stored in the inner cavity of the furnace body (2). The cold water header (3) and the hot water header (4) are cylindrical and the hot water header (4) is located above the cold water header (3). The tube body (3-1) of the cold water header (3) is placed in the inner cavity of the furnace body (2). The cold water inlet end (3-2) of the cold water header (3) is placed outside the furnace body (2). The tube body (4- 1) is placed in the inner cavity of the furnace body (2), the hot water outlet end (4-2) of the hot water header (4) is placed outside the furnace body (2), the coil (5) is arranged upright in a spiral shape in the inner cavity of the furnace body (2), and the lower end pipe opening (5a) of the coil (5) is connected to the inner cavity of the cold water header (3), and the upper end pipe opening (5b) of the coil (5) is connected to the inner cavity of the hot water header (4), the furnace body (2) is arranged upright, and a steam outlet (6) is installed at the top end of the furnace body (2).

2. The hot water steam multi-purpose electric heating furnace according to claim 1, characterized in that: The coils (5) have three tubes, namely an inner coil (5-1), a middle coil (5-2), and an outer coil (5-3). The inner coil (5-1), the middle coil (5-2), and the outer coil (5-3) are connected in parallel with the cold water header (3) and the hot water header (4) to form a whole.

3. The hot water steam multi-purpose electric heating furnace according to claim 1 or 2, characterized in that: The furnace body (2) is formed by welding an upper elliptical head (2-1) located at the top, a barrel (2-2) located in the middle, and a lower elliptical head (2-3) located at the bottom. The steam outlet (6) is installed at the top of the upper elliptical head (2-1). A plurality of supporting legs (7) are installed at the bottom of the lower elliptical head (2-3). A water supply port (8) is provided on the side of the lower elliptical head (2-3). A liquid level gauge (9) is provided on the side of the barrel (2-2). A manhole (10) and a safety valve (11) are provided on the upper elliptical head (2-1).

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