Water pipe type vacuum water heating unit

Abstract

The utility model discloses a water pipe type vacuum hot water unit which comprises a combustion chamber, a combustor is arranged on the left side of the combustion chamber, an air blower is arranged on the left side of the combustor, a vacuum chamber is arranged above the combustion chamber, a heat exchanger is arranged on the right side in the vacuum chamber, and the heat exchanger extends upwards to be connected with the vacuum chamber. A vacuum pump is arranged on the left side of the top of the vacuum chamber, a convection bank is installed in the vacuum chamber, the right end of the convection bank is connected with a water inlet distribution table and a water outlet distribution table, the right side of the water inlet distribution table is connected with a first water outlet pipe, and the first water outlet pipe is connected with a first conveying pump. The lower portion of the left side of the vacuum chamber is connected with a second water outlet pipe, the left side of the second water outlet pipe is connected with a second conveying pump, and the left side of the second conveying pump is connected with a heating medium water pool. The structure of an existing hot water unit is simplified, operation is convenient, market popularization and application are facilitated, and good economic value can be created.

Description

Technical Field

[0001] This utility model belongs to the technical field of hot water units, and in particular relates to a water pipe type vacuum hot water unit. Background Technology

[0002] Vacuum hot water units are generally divided into two parts: the lower part is a centrally combusted shell steam boiler, consisting of the flue and furnace shell as the heating surface; the upper part is a vacuum chamber created by vacuum extraction, containing a tubular steam-water heat exchanger to heat the circulating water flowing through it. Its working principle utilizes the fact that water has different steam temperatures under different pressures, causing the heat transfer medium water to boil under vacuum. The resulting steam then exchanges heat with the cold or warm water flowing in the heat transfer tubes, thus providing hot water for heating. The entire unit operates under vacuum, offering superior safety and ease of operation compared to traditional hot water boilers. However, the existing unit structure is relatively complex and difficult to operate, limiting the market promotion of vacuum hot water units. Utility Model Content

[0003] In response to the shortcomings of existing technologies, the inventor, based on his extensive experience in the field of hot water unit technology, developed a water pipe vacuum hot water unit.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a water pipe type vacuum hot water unit, including a combustion chamber, a burner is arranged on the left side of the combustion chamber, a blower is arranged on the left side of the burner, a vacuum chamber is above the combustion chamber, a heat exchanger is arranged on the right side inside the vacuum chamber, the heat exchanger extends upward and connects to the vacuum chamber, a vacuum pump is arranged on the top left side of the vacuum chamber, a convection tube bundle is installed inside the vacuum chamber, the right end of the convection tube bundle is respectively connected to an inlet water distribution platform and an outlet water distribution platform, a first outlet water pipe is connected to the right side of the inlet water distribution platform, the first outlet water pipe is connected to a first delivery pump, a clear water tank is connected to the right side of the first delivery pump, a second outlet water pipe is connected to the lower left side of the vacuum chamber, a second delivery pump is connected to the left side of the second outlet water pipe, and a heat medium water tank is connected to the left side of the second delivery pump.

[0005] Furthermore, the convection tube bundle is U-shaped and arranged horizontally, with the first outlet pipe connected to the lower right side of the inlet distribution platform and the return branch pipe connected to the upper right side of the outlet distribution platform.

[0006] Furthermore, the heat exchanger consists of multiple hollow tubes arranged vertically, and the heat transfer medium water in the vacuum chamber flows into the hollow tubes.

[0007] Furthermore, a first outlet valve is provided on the first outlet pipe, a first inlet valve is provided on the first inlet pipe, and a first return pipe is also connected to the first outlet pipe, with a first return valve provided on the first return pipe.

[0008] Furthermore, a second outlet valve is provided on the second outlet pipe, a second inlet valve is provided on the second inlet pipe, and a second return pipe is also connected to the second outlet pipe, with a second return valve provided on the second return pipe.

[0009] Furthermore, a chimney is connected to the outside of the right side of the combustion chamber, and the diameter of the chimney on the left side is larger than that on the right side.

[0010] Furthermore, a pressure gauge is installed on the right side of the vacuum pump, a temperature gauge is installed on the right side of the pressure gauge, a pressure relief valve is installed on the right side of the temperature gauge, and a level gauge is installed on the upper left side of the vacuum chamber. The level of the vacuum chamber is H, where 20% < H < 70%.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This utility model simplifies the structure of existing hot water units by installing a first and second delivery pump on the outside of the unit body, making operation easier and facilitating market promotion and application. Simultaneously, the inclusion of pressure gauges, pressure relief valves, and other accessories effectively ensures the safe operation of the unit and generates significant economic value. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the convection tube bundle and the inlet and outlet water distribution platforms.

[0015] Reference numerals: 1. Combustion chamber; 2. Burner; 3. Blower; 4. Heat exchanger; 5. Chimney; 6. Clear water tank; 7. First transfer pump; 8. First inlet pipe; 9. First inlet valve; 10. First outlet pipe; 11. First outlet valve; 12. First return pipe; 13. First return valve; 14. Convection tube bundle; 15. Return branch pipe; 16. Vacuum pump; 17. Pressure gauge; 18. Thermometer; 19. Level gauge; 20. Heat medium tank; 21. Second transfer pump; 22. Second inlet pipe; 23. Second inlet valve; 24. Second outlet valve; 25. Second return pipe; 26. Second return valve; 27. Inlet distribution platform; 28. Outlet distribution platform; 29. ​​Vacuum chamber; 30. Pressure relief valve; 31. Second outlet pipe. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] It should be noted that in the description of this utility model, the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale; for example, the thickness or width of some layers may be exaggerated relative to other layers.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, if an item is defined or described in one figure, it will not need to be further discussed and described in the description of the following figures. Example

[0020] like Figures 1-2 As shown, a water pipe type vacuum hot water unit includes a combustion chamber 1, a burner 2 is arranged on the left side of the combustion chamber 1, a blower 3 is arranged on the left side of the burner 2, a vacuum chamber 29 is above the combustion chamber 1, a heat exchanger 4 is arranged on the right side inside the vacuum chamber 29, the heat exchanger 4 extends upward and connects to the vacuum chamber 29, a vacuum pump 16 is arranged on the top left side of the vacuum chamber 29, a convection tube bundle 14 is installed inside the vacuum chamber 29, the right end of the convection tube bundle 14 is connected to an inlet water distribution platform 27 and an outlet water distribution platform 28 respectively, a first outlet water pipe 10 is connected to the right side of the inlet water distribution platform 27, the first outlet water pipe 10 is connected to a first delivery pump 7, a clear water tank 6 is connected to the right side of the first delivery pump 7, a second outlet water pipe 31 is connected to the lower left side of the vacuum chamber 29, a second delivery pump 21 is connected to the left side of the second outlet water pipe 31, and a heat medium water tank 20 is connected to the left side of the second delivery pump 21.

[0021] In this embodiment, the convection tube bundle 14 is U-shaped and arranged horizontally. The first water outlet pipe 10 is connected to the lower right side of the water inlet distribution platform 27, and the return water branch pipe 15 is connected to the upper right side of the water outlet distribution platform 28.

[0022] In this embodiment, the heat exchanger 2 is composed of multiple hollow tubes arranged vertically, and the heat transfer medium water in the vacuum chamber 29 flows into the hollow tubes.

[0023] In this embodiment, a first water outlet valve 11 is provided on the first water outlet pipe 10, a first water inlet valve 9 is provided on the first water inlet pipe 8, a first water return pipe 12 is also connected to the first water outlet pipe 10, and a first water return valve 13 is provided on the first water return pipe 12.

[0024] In this embodiment, a second water outlet valve 24 is provided on the second water outlet pipe 31, a second water inlet valve 23 is provided on the second water inlet pipe 22, a second water return pipe 25 is also connected to the second water outlet pipe 31, and a second water return valve 26 is provided on the second water return pipe 25.

[0025] In this embodiment, a chimney 5 is connected to the outside of the right side of the combustion chamber 1, and the diameter of the left side of the chimney 5 is larger than the diameter of the right side. It should be noted that, due to space limitations in the accompanying drawings, [details omitted]. Figure 1 The outlet of chimney 5 faces downwards, but in actual production, the outlet of chimney 5 faces vertically upwards.

[0026] In this embodiment, a pressure gauge 17 is provided on the right side of the vacuum pump 16, a thermometer 18 is provided on the right side of the pressure gauge 17, a pressure relief valve 30 is provided on the right side of the thermometer 18, a level gauge 19 is provided on the upper left side of the vacuum chamber 29, and the level of the vacuum chamber 29 is H, where 20% < H < 70%.

[0027] In practical use, this invention first starts the first delivery pump 7 to deliver clean water into the convection tube bundle 14. During the delivery of clean water, close attention must be paid to the pressure of the first delivery pump 7. If the pump pressure is too high, the first return water valve 13 should be opened appropriately to reduce the pump's outlet pressure. Then, the second delivery pump 21 is started to deliver heat transfer medium water into the vacuum chamber 29. When the liquid level reaches approximately 70%, the delivery of heat transfer medium water is stopped. Simultaneously, the vacuum pump 16 is started, and the burner 2 is ignited. The flame burns in the combustion chamber 1, heating the heat exchanger 4, causing the heat transfer medium water in the vacuum chamber 1 to boil and exchange heat with the clean water in the convection tube bundle 14. When the heat transfer medium water level in the vacuum chamber 1 is about to drop below 30%, the second delivery pump 21 is restarted.

[0028] During the operation of the entire hot water unit, the central control personnel and on-site inspection personnel must strictly implement the process parameters to prevent the occurrence of dry boiling.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water pipe type vacuum hot water unit, characterized in that: The system includes a combustion chamber, a return water branch pipe, a first water inlet pipe, and a second water inlet pipe. A burner is located on the left side of the combustion chamber, and a blower is located on the left side of the burner. Above the combustion chamber is a vacuum chamber, and inside the vacuum chamber on the right side is a heat exchanger that extends upward and connects to the vacuum chamber. A vacuum pump is located on the top left side of the vacuum chamber. A convection tube bundle is installed inside the vacuum chamber, and the right ends of the convection tube bundle are connected to an inlet water distribution platform and an outlet water distribution platform, respectively. The right side of the inlet water distribution platform is connected to a first outlet water pipe, which is connected to a first delivery pump. The right side of the first delivery pump is connected to a clear water tank. The lower left side of the vacuum chamber is connected to a second outlet water pipe, and the left side of the second outlet water pipe is connected to a second delivery pump. The left side of the second delivery pump is connected to a heat transfer medium water tank.

2. The water pipe type vacuum hot water unit according to claim 1, characterized in that: The convection tube bundle is U-shaped and arranged horizontally. The first outlet pipe is connected to the lower right side of the inlet distribution platform, and the return branch pipe is connected to the upper right side of the outlet distribution platform.

3. A water pipe type vacuum hot water unit according to claim 1, characterized in that: The heat exchanger consists of multiple hollow tubes arranged vertically, and the heat transfer medium water in the vacuum chamber flows into the hollow tubes.

4. A water pipe type vacuum hot water unit according to claim 1, characterized in that: The first outlet pipe is equipped with a first outlet valve, the first inlet pipe is equipped with a first inlet valve, and the first outlet pipe is also connected to a first return pipe, which is equipped with a first return valve.

5. A water pipe type vacuum hot water unit according to claim 1, characterized in that: The second outlet pipe is equipped with a second outlet valve, the second inlet pipe is equipped with a second inlet valve, and the second outlet pipe is also connected to a second return pipe, which is equipped with a second return valve.

6. A water pipe type vacuum hot water unit according to claim 1, characterized in that: A chimney is connected to the outside of the right side of the combustion chamber, and the diameter of the chimney on the left side is larger than that on the right side.

7. A water pipe type vacuum hot water unit according to claim 1, characterized in that: A pressure gauge is installed on the right side of the vacuum pump, a thermometer is installed on the right side of the pressure gauge, a pressure relief valve is installed on the right side of the thermometer, and a level gauge is installed on the upper left side of the vacuum chamber. The level of the vacuum chamber is H, where 20% < H < 70%.

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