Vacuum phase change hot water boiler

Abstract

The utility model discloses a vacuum phase change hot water boiler which comprises a base and a boiler shell arranged on the base in a supporting mode, and the interior of the boiler shell is divided into a negative pressure steam chamber and a lower boiler chamber which are arranged up and down. A boiler furnace with an opening in the right end is arranged at the bottom in the lower boiler chamber, a burner base is arranged at the position, right opposite to the opening of the boiler furnace, of the boiler shell, a reversal chamber is communicated between the burner base and the opening of the boiler furnace, the reversal chamber is communicated with a front smoke chamber through a flue, and the top of the front smoke chamber penetrates into the negative-pressure steam chamber. A smoke pipe is arranged between the front smoke chamber and the rear smoke chamber, a plurality of spoiler sets are arranged on the inner wall of the smoke pipe in the length direction, each spoiler set comprises a plurality of spoilers arranged in the circumferential direction of the inner wall of the smoke pipe at intervals, and the spoilers of the adjacent spoiler sets are arranged in a staggered mode. A rubber pad is arranged on the lower surface of the base, and anti-skid lines are arranged on the lower surface of the rubber pad. According to the utility model, not only can the movement and the damage to the ground be avoided, but also the heat exchange effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of boiler technology, specifically to a vacuum phase change hot water boiler. Background Technology

[0002] A condensing vacuum hot water boiler, also known as a vacuum phase change hot water boiler, is a boiler that heats cold water through phase change heat transfer when the pressure of the medium inside the boiler is lower than atmospheric pressure during normal operation.

[0003] However, existing vacuum phase change hot water boilers are placed directly on the ground, which not only makes them prone to displacement due to vibration during use, but also damages the ground; at the same time, the flue gas heat exchange efficiency of existing vacuum phase change hot water boilers needs to be further improved. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a vacuum phase change hot water boiler to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0006] A vacuum phase change hot water boiler includes a base and an insulated boiler shell supported on the base. The interior of the boiler shell is divided into a negative pressure steam chamber and a lower boiler chamber by a horizontally arranged partition. A horizontally arranged furnace chamber with an opening at its right end is located at the bottom of the lower boiler chamber. A burner seat is located on the boiler shell directly opposite the furnace chamber opening. A combustion chamber connects the burner seat and the furnace chamber opening. The combustion chamber is connected to a flue located on one side of the furnace chamber. The left end of the flue, away from the combustion chamber, connects to a negative pressure steam chamber located above the left end of the furnace chamber, with its top extending into the negative pressure steam chamber. The steam chamber has a front smoke chamber, and a rear smoke chamber is located at the right end of the negative pressure steam chamber, opposite to the top of the front smoke chamber. Several smoke pipes are connected to the front and rear smoke chambers respectively. Several groups of baffles are arranged perpendicular to the inner wall of the smoke pipe along the length direction. Each baffle group includes several baffles arranged circumferentially along the inner wall of the smoke pipe, and the baffles in adjacent baffle groups are staggered. The lower surface of the base is provided with a rubber pad, and the lower surface of the rubber pad is provided with anti-slip texture.

[0007] Preferably, the lower surface of the base is provided with a plurality of grooves in an alternating pattern; the upper surface of the rubber pad is provided with protrusions that are adapted to the grooves at positions corresponding to the grooves.

[0008] Preferably, the rear smoke chamber is connected to a smoke exhaust port located at the top of the pot shell.

[0009] Preferably, the pot shell is provided with a flue gas sampling port that communicates with the front smoke chamber, and the flue gas sampling port is provided with a flue gas sampling valve.

[0010] Preferably, the top of the negative pressure steam chamber is provided with a steam-water heat exchanger located above the flue pipe. The left end of the steam-water heat exchanger is connected to a water inlet located at the left end of the boiler shell, and the right end of the steam-water heat exchanger is connected to a water outlet and a water return outlet located at the right end of the boiler shell.

[0011] Preferably, the top of the pot shell is provided with an exhaust port that communicates with the negative pressure steam chamber, and an exhaust valve is provided on the exhaust port.

[0012] The technological advancements achieved by this utility model are as follows, due to the adoption of the above technical solutions.

[0013] The rubber pads in this invention not only prevent damage to the ground, but also increase the friction between the rubber pads and the ground, thus preventing movement; the baffles in the invention can turbulentize the flue gas, thereby improving the heat exchange effect between the flue gas and the heat transfer medium water. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0015] Figure 2 This is a top view of the present invention;

[0016] Figure 3 This is a schematic diagram of the base structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the rubber pad structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the internal structure of the flue pipe of this utility model;

[0019] Figure 6 For the present utility model Figure 5 A sectional view.

[0020] Among them: 1. Boiler shell, 2. Baffle plate, 3. Lower boiler chamber, 4. Negative pressure steam chamber, 5. Furnace shell, 6. Burner base, 7. Combustion chamber, 8. Front smoke chamber, 9. Smoke pipe, 91. Baffle plate, 10. Rear smoke chamber, 11. Smoke outlet, 12. Steam-water heat exchanger, 13. Water inlet, 14. Water outlet, 15. Water return outlet, 16. Exhaust port, 17. Base, 171. Groove, 18. Rubber pad, 181. Protrusion. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] A vacuum phase change hot water boiler, combined with Figures 1 to 2 As shown, it includes a base 17 and a thermal pot shell 1 supported on the base 17.

[0023] A rubber pad 18 is fixedly mounted on the lower surface of the base 17. The lower surface of the rubber pad 18 has anti-slip texture. The rubber pad 18 directly contacts the ground, which not only prevents damage to the ground but also increases the friction between the rubber pad and the ground, thus preventing movement. Figures 3 to 4 As shown, the lower surface of the base 17 is provided with a number of grooves 171 in an alternating manner, and the upper surface of the rubber pad 18 is provided with protrusions 181 at positions corresponding to the grooves 171. The protrusions 181 are adapted to the grooves 171. When the rubber pad 18 is fixed on the base 17, the protrusions 181 are inserted into the grooves 171, thereby strengthening the connection between the base 17 and the rubber pad 18.

[0024] The interior of the boiler shell 1 is divided into a negative pressure steam chamber 4 and a lower boiler chamber 3 by a horizontally arranged partition 2, with the negative pressure steam chamber 4 and the lower boiler chamber 3 arranged vertically. An exhaust port 16 is provided on the top of the boiler shell 1, which is connected to the negative pressure steam chamber 4. An exhaust valve is provided on the exhaust port 16 to control the opening and closing of the exhaust port 16.

[0025] A furnace chamber 5 is installed at the bottom of the lower boiler chamber 3. The furnace chamber 5 is horizontally positioned and open at its right end. A burner seat 6 is installed on the boiler shell 1, directly opposite the opening of the furnace chamber 5, for connecting the burner. A combustion chamber 7 connects the burner seat 6 and the opening of the furnace chamber 5. The combustion chamber 7 is connected to a flue, which is located on one side of the furnace chamber 5. The left end of the flue, away from the combustion chamber 7, connects to a front smoke chamber 8. The front smoke chamber 8 is located above the left end of the furnace chamber 5, and its top extends into the negative pressure steam chamber 4. A rear smoke chamber 10 is installed at the right end of the negative pressure steam chamber 4. The rear smoke chamber 10 is positioned opposite the top of the front smoke chamber 8, and it is connected to an exhaust port 11, which is located at the top of the boiler shell 1. Several smoke pipes 9 are installed between the front smoke chamber 8 and the rear smoke chamber 10, with both ends of each smoke pipe 9 connected to the front smoke chamber 8 and the rear smoke chamber 10, respectively.

[0026] The negative pressure steam chamber 4 contains an appropriate amount of heat transfer medium water, which covers the flue pipe 9. A steam-water heat exchanger 12 is installed at the top of the negative pressure steam chamber 4, located above the flue pipe 9. The left end of the steam-water heat exchanger 12 is connected to a water inlet 13, which is located at the left end of the boiler shell 1. The water inlet 13 is used to allow low-temperature water to enter, thus enabling low-temperature water to flow into the water inlet 13. The right end of the steam-water heat exchanger 12 is connected to a water outlet 14 and a water return 15, which are located at the right end of the boiler shell 1. After heat exchange, the low-temperature water in the steam-water heat exchanger 12 becomes high-temperature water and flows out through the water outlet 14, thus being used for heating or domestic water. At the same time, the water return 15 is used to return water.

[0027] During operation, the negative pressure steam chamber 4 is in a vacuum state. Fuel is injected into the furnace chamber 5 through the burner and burned. The resulting high-temperature flue gas strongly radiates heat onto the wall of the furnace chamber 5. After encountering the wall of the furnace chamber 5, the high-temperature flue gas flows back along the wall. During the backflow, the flue gas further radiates and convects heat to the combustion chamber. Afterward, it enters the re-combustion chamber 7 through the opening and then enters the front smoke chamber 8 through the flue. The high-temperature flue gas in the front smoke chamber 8 enters the flue pipe 9 and exchanges heat with the heat transfer medium water. The heat transfer medium water absorbs heat energy, boils and vaporizes into steam. The steam rises and encounters the low-temperature water in the steam-water heat exchanger 12. After exchanging heat with the steam, the low-temperature water is heated and used for heating or domestic hot water. At the same time, the steam itself is cooled and condensed into water droplets, which fall onto the surface of the heat transfer medium water and are heated again, thus completing the entire cycle. The heat transfer medium water continuously cycles through "boiling → evaporation → condensation → heat transfer medium water" in the closed machine body, so there is no need to add condensate water and there is no risk of dry burning.

[0028] The vacuum state of the negative pressure steam chamber 4 is achieved by boiling: First, add an appropriate amount of hot water to the negative pressure steam chamber 4, ensuring the hot water covers the flue pipe 9. Close all other valves of the boiler except the exhaust valve. Start the boiler and heat it to the saturation temperature under the working pressure of the hot water. After all the air dissolved in the working medium is discharged, close the exhaust valve to form a vacuum state.

[0029] like Figures 5 to 6 As shown, several sets of baffle plates are spaced apart along the length of the inner wall of the flue pipe 9, and the baffle plates are arranged perpendicular to the inner wall of the flue pipe 9. Specifically, each baffle plate set includes several baffle plates 91 spaced apart circumferentially along the inner wall of the flue pipe 9, and the baffle plates 91 in adjacent baffle plate sets are staggered. The baffle plates 91 can turbulentize the flue gas, thereby improving the heat exchange effect between the flue gas and the heat transfer medium water.

[0030] A flue gas sampling port is provided on the boiler shell 1. The flue gas sampling port is connected to the front smoke chamber 8. A flue gas sampling valve is provided on the flue gas sampling port. Flue gas sampling can be achieved by opening the flue gas sampling valve.

[0031] In use, the rubber pad 18 not only prevents damage to the ground, but also increases the friction between the rubber pad 18 and the ground, thus preventing movement; the baffle 91 can turbulentize the flue gas, thereby improving the heat exchange effect between the flue gas and the heat transfer medium water.

Claims

1. Vacuum phase-change hot water boiler comprising a base (17) and a thermally insulated tank (1) resting on the base (17), characterized in that: The inside of the kettle shell (1) is divided into an upper negative pressure steam chamber (4) and a lower kettle chamber (3) by a horizontally arranged partition (2); the lower kettle chamber (3) is provided with a horizontally arranged and right-end-opened furnace tube (5) at the bottom, the kettle shell (1) is provided with a burner seat (6) opposite to the opening of the furnace tube (5), a back-burning chamber (7) is communicated between the burner seat (6) and the opening of the furnace tube (5), the back-burning chamber (7) is communicated with a flue arranged at one side of the furnace tube (5), the left end of the flue away from the back-burning chamber (7) is communicated with a front flue chamber (8) located above the left end of the furnace tube (5) and penetrating into the negative pressure steam chamber (4) at the top, the right end of the negative pressure steam chamber (4) is provided with a rear flue chamber (10) arranged opposite to the top of the front flue chamber (8), a plurality of smoke pipes (9) are arranged between the front flue chamber (8) and the rear flue chamber (10) and communicated with the front flue chamber (8) and the rear flue chamber (10), respectively, a plurality of groups of turbulence plate groups are arranged on the inner wall of the smoke pipe (9) along the length direction and perpendicularly to the inner wall of the smoke pipe (9), each group of turbulence plate groups comprises a plurality of turbulence plates (91) arranged on the inner wall of the smoke pipe (9) in a circumferential direction, and the turbulence plates (91) between adjacent groups of turbulence plate groups are arranged staggeredly; the lower surface of the base (17) is provided with a rubber pad (18), and the lower surface of the rubber pad (18) is provided with anti-skid lines.

2. The vacuum phase-change hot water boiler according to claim 1, characterized in that: The lower surface of the base (17) is staggeredly provided with a plurality of grooves (171); the upper surface of the rubber pad (18) is provided with a protrusion (181) corresponding to the position of the groove (171) and matched with the groove (171).

3. The vacuum phase-change hot water boiler according to claim 1, characterized in that: The rear flue chamber (10) is communicated with a smoke exhaust port (11) arranged at the top of the kettle shell (1).

4. The vacuum phase-change hot water boiler according to claim 1, characterized in that: The kettle shell (1) is provided with a flue gas sampling port communicated with the front flue chamber (8), and the flue gas sampling port is provided with a flue gas sampling valve.

5. The vacuum phase-change hot water boiler according to claim 1, characterized in that: The top of the negative pressure steam chamber (4) is provided with a steam-water heat exchanger (12) located above the smoke pipe (9), the left end of the steam-water heat exchanger (12) is communicated with a water inlet (13) arranged at the left end of the kettle shell (1), and the right end of the steam-water heat exchanger (12) is communicated with a water outlet (14) and a backwater port (15) arranged at the right end of the kettle shell (1).

6. The vacuum phase-change hot water boiler according to claim 1, characterized in that: The top of the kettle shell (1) is provided with an exhaust port (16) communicated with the negative pressure steam chamber (4), and the exhaust port (16) is provided with an exhaust valve.

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