Gas vacuum hot water boiler

Abstract

The utility model discloses a gas vacuum hot water boiler which comprises a boiler box body, a hot water boiler is arranged in the boiler box body, the hot water boiler is internally composed of a burner, a plurality of groups of first heat exchange tubes and a smoke outlet, a heat exchanger is arranged at the upper end of the hot water boiler, and a plurality of groups of second heat exchange tubes are arranged in the heat exchanger. The utility model has the beneficial effects that the high-purity water obtained by deoxidizing and descaling heat medium water in the boiler is filled at one time before equipment, closed circulation (vaporization-condensation-vaporization) is realized in the unit when a user uses the unit, the heat medium water is not increased or reduced, the unit does not need to be supplemented or replaced in the service life, and the cost is reduced. The service life of the hot water boiler is greatly prolonged, and heat medium water does not need to be supplemented to the hot water boiler in the using process.

Description

Technical Field

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

[0002] Gas-fired hot water boilers are a type of hot water boiler. They use gas (such as natural gas, liquefied petroleum gas, city gas, biogas, etc.) as fuel and heat water through a burner to provide heating and hot water for domestic use and bathing. These boilers are highly intelligent, heat up quickly, are low-noise, and dust-free, making them an economical and popular choice that is very suitable for China's national conditions. Gas-fired boilers utilize the heat generated by the combustion of gas to exchange heat with the fluid to be heated, thus obtaining the required heating fluid. The boiler exhaust is virtually dust-free, especially when using natural gas as fuel, where not only is it dust-free, but the sulfur dioxide content is also extremely low. With increasingly stringent environmental protection standards and the growing trend of large-scale centralized heating in cities, gas-fired boilers have a greater development prospect than oil-fired and coal-fired boilers.

[0003] In existing gas-fired hot water boilers, the heat transfer medium water needs to be continuously added to achieve continuous heating. Moreover, the amount of heat transfer medium water added needs to be controlled. A large amount of water added will lead to incomplete heating, while a small amount of water added will shorten the life of the hot water boiler. In addition, the scale and impurities produced by the heat transfer medium water after a period of operation will also shorten the life of the hot water boiler. Utility Model Content

[0004] The purpose of this invention is to provide a gas-fired vacuum hot water boiler to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a gas-fired vacuum hot water boiler, comprising a boiler housing, wherein a hot water boiler is disposed within the boiler housing, the hot water boiler being composed of a burner, multiple sets of first heat exchange tubes and a flue gas outlet, and a heat exchanger being disposed at the upper end of the hot water boiler, wherein multiple sets of second heat exchange tubes are disposed within the heat exchanger.

[0006] In a further optimized configuration, the burner is located at one end of the hot water boiler, and the flue gas outlet is located at the other end, away from the burner.

[0007] In a further optimized configuration, the flue gas outlet is connected to a chimney located outside the boiler housing.

[0008] In a further optimized configuration, the top of the heat exchanger is provided with a heat exchanger inlet and a heat exchanger outlet.

[0009] In a further optimized configuration, the lower ends of the heat exchanger inlet and outlet are respectively equipped with a heat transfer water temperature sensor interface, a vacuum gauge, and a vacuum pressure switch.

[0010] In a further optimized configuration, the heat exchanger outlet is connected to externally installed thermal equipment.

[0011] Further optimized, the hot water boiler is filled with heat transfer water, which is ultrapure water that has undergone deoxygenation and descaling, and the internal unit of the hot water boiler is fully enclosed.

[0012] Beneficial effects

[0013] The gas-fired vacuum hot water boiler provided by this utility model uses high-purity water that has undergone deoxygenation and descaling treatment. The boiler is filled with this water in one go before installation. During user operation, the unit achieves a closed-loop circulation (vaporization → condensation → vaporization). The amount of heat medium water neither increases nor decreases. It does not need to be replenished or replaced during the service life of the unit, which greatly increases the service life of the hot water boiler and eliminates the need to replenish the heat medium water during use. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the overall structure of this utility model;

[0015] Figure 2 This is a front view schematic diagram of the overall structure of this utility model. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] Example

[0018] like Figure 1-2 As shown, a gas-fired vacuum hot water boiler includes a boiler housing 10, a hot water boiler 11 is installed inside the boiler housing 10, the hot water boiler 11 is composed of a burner 5, multiple sets of first heat exchange tubes 6 and a flue gas outlet 7, and a heat exchanger 2 is provided at the upper end of the hot water boiler 11, and multiple sets of second heat exchange tubes 1 are provided inside the heat exchanger 2.

[0019] In this embodiment, the burner 5 is located at one end of the hot water boiler 11, and the flue gas outlet 7 is located at the other end away from the burner 5. The burner 5 heats the gas-fired vacuum hot water boiler. In the low-temperature environment of the vacuum chamber, the heat medium water in multiple sets of first heat exchange tubes 6 boils at low pressure and low temperature to generate steam. The steam condenses and exchanges heat with the circulating water in multiple sets of second heat exchange tubes 1 in the heat exchanger, thereby heating the circulating water in multiple sets of second heat exchange tubes 1.

[0020] The flue gas outlet 7 is connected to the chimney located outside the boiler housing 1. The flue gas generated by the vacuum hot water boiler is discharged into the chimney through the flue gas outlet 7.

[0021] The top of the heat exchanger 2 is provided with a heat exchanger inlet 3 and a heat exchanger outlet 4. The circulating water used by the external equipment enters the heat exchanger 2 through the heat exchanger inlet 3. The circulating water in the multiple sets of second heat exchange tubes 1 inside the heat exchanger 2 exchanges heat with the steam at low temperature, which raises the temperature of the circulating water. The heated circulating water enters the heat-using equipment through the heat exchanger outlet 4.

[0022] The heat exchanger inlet 3 and heat exchanger outlet 4 are respectively equipped with a heat medium water temperature sensor interface 9 and a vacuum gauge and vacuum pressure switch 8, which monitor and control the temperature through multiple switches.

[0023] The heat exchanger outlet 4 is connected to the external thermal equipment.

[0024] The hot water boiler 11 is filled with heat transfer water, which is ultrapure water that has been deoxygenated and descaled, and the internal unit of the hot water boiler 11 is fully enclosed.

[0025] The operation process of the hot water boiler is as follows:

[0026] The heat transfer water in the gas-fired vacuum hot water boiler is high-purity water that has undergone special treatment such as deoxygenation and descaling. It is fully charged once before leaving the factory and circulates in a closed loop within the unit during use (vaporization → condensation → vaporization). The amount of heat transfer water does not increase or decrease, and it does not need to be replenished or replaced during the service life of the unit. The burner heats the gas-fired vacuum hot water boiler. In the low-temperature environment of the vacuum chamber, the heat transfer water in the first heat exchange tube boils at low pressure and low temperature to generate steam. The steam condenses and exchanges heat with the circulating water in the second heat exchange tube, heating the circulating water in the second heat exchange tube. The steam itself is cooled and condensed into water droplets, which fall onto the surface of the heat transfer water and are heated again, thus completing the entire cycle process and achieving the purpose of supplying hot water. The flue gas generated by the vacuum hot water boiler is discharged into the chimney through the flue gas outlet.

[0027] The circulating water used by the external equipment enters the heat exchanger through the heat exchanger inlet. The circulating water in the second heat exchange tube inside the heat exchanger exchanges heat with the steam at a low temperature, which raises the temperature of the circulating water. The heated circulating water enters the heat-using equipment through the heat exchanger outlet.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A gas-fired vacuum hot water boiler, characterized in that: The boiler includes a boiler housing (10), and a hot water boiler (11) is installed inside the boiler housing (10). The hot water boiler (11) is composed of a burner (5), multiple sets of first heat exchange tubes (6) and a flue gas outlet (7). A heat exchanger (2) is provided at the upper end of the hot water boiler (11), and multiple sets of second heat exchange tubes (1) are provided inside the heat exchanger (2).

2. The gas-fired vacuum hot water boiler according to claim 1, characterized in that: The burner (5) is located at one end of the hot water boiler (11), and the flue gas outlet (7) is located at the other end away from the burner (5).

3. The gas-fired vacuum hot water boiler according to claim 1, characterized in that: The flue gas outlet (7) is connected to a chimney located outside the boiler housing (10).

4. The gas-fired vacuum hot water boiler according to claim 1, characterized in that: The heat exchanger (2) is provided with a heat exchanger inlet (3) and a heat exchanger outlet (4) on the top.

5. The gas-fired vacuum hot water boiler according to claim 4, characterized in that: The heat exchanger inlet (3) and heat exchanger outlet (4) are respectively equipped with a heat medium water temperature sensor interface (9) and a vacuum gauge and vacuum pressure switch (8).

6. The gas-fired vacuum hot water boiler according to claim 4, characterized in that: The heat exchanger outlet (4) is connected to the external thermal equipment.

7. The gas-fired vacuum hot water boiler according to claim 1, characterized in that: The hot water boiler (11) is filled with heat transfer water, which is ultrapure water that has been deoxygenated and descaled, and the internal unit of the hot water boiler (11) is fully enclosed.

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