Spiral smoke tube heat exchange type volumetric water heater body

Abstract

The utility model discloses a spiral smoke tube heat exchange type volumetric water heater body, which relates to the technical field of water heaters, and comprises a stainless steel shell and a closed combustion chamber, the closed combustion chamber is positioned at the position of a central axis in the stainless steel shell, and a spiral smoke tube is arranged in the closed combustion chamber. The upper end of the closed combustion chamber is an open end, the open end is located above the stainless steel shell and provided with a flange plate so that the open end can be connected with a fan flange, and the lower end of the closed combustion chamber extends to the lower portion in the stainless steel shell. The combustion chamber is a closed combustion chamber, is less in heat loss and high in heat efficiency, and extends from the upper end of the stainless steel shell to the lower end of the stainless steel shell, so that the combustion chamber can be in all-directional contact with water in the axial direction of the stainless steel shell; therefore, the heat difference of water at the upper and lower parts in the stainless steel shell is greatly reduced, and the water temperature is more uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to a spiral smoke tube heat exchange type volumetric water heater body. Background Art

[0002] The patent with the publication number CN212930468U proposes a condensing dual-purpose water heater, whose main heat exchange system includes a burner 301 and a main heat exchanger 302, and the main heat exchange pipeline is arranged in the main heat exchanger 302. The gas burns in the burner 301 to generate high-temperature flue gas, and the high-temperature flue gas passes through the main heat exchanger 302 to heat the water in the main heat exchange pipeline, so that the water in the heating system is kept at a high temperature. The main heat exchanger 302 adopts an oxygen-free copper heat exchanger, and the heat exchange efficiency is high through the coil and fin heat exchange; the condensing heat exchanger 303 is connected to the exhaust side of the main heat exchanger 302, and the condensing heat exchange pipeline 202 is arranged in the condensing heat exchanger 303. The high-temperature flue gas generated in the burner 301 enters the condensing heat exchanger 303 after heat exchange in the main heat exchanger 302, and the water in the condensing heat exchange pipeline 202 absorbs the heat of the flue gas with residual heat in the condensing heat exchanger 303.

[0003] After the heating water in the heating system flows in from the heating water inlet, it first passes through the condensing heat exchanger 303, and the heat of the flue gas with residual heat is transferred to the heating water with lower temperature through the condensing heat exchanger 303, and the heating water then flows to the main heat exchanger 302 to absorb the heat of the high-temperature flue gas. In this technology, the flue gas generated by the burner 301 passes through the main heat exchanger 302 and the condensing heat exchanger 303, and exchanges heat with the heating water twice, which improves the heat exchange rate of the flue gas, can improve the energy utilization rate of the gas, is conducive to improving the efficiency level, and reduces the amount of gas used.

[0004] In the above device, although the flue gas can be condensed twice, the flue gas is not in a condensed state during the process of reaching the condensing heat exchanger 303 from the main heat exchanger 302, resulting in a decrease in its condensation efficiency. In addition, the water heater in the prior art is not a closed heating, resulting in a large heat loss. Utility Model Content

[0005] The utility model provides a spiral smoke tube heat exchange type volumetric water heater body, which has the advantage of good condensation effect, so as to solve the problems in the prior art that smoke cannot always be in a condensation state when discharged and has large heat loss.

[0006] In order to achieve the purpose of keeping the flue gas in a condensed state at all times when it is discharged and reducing heat loss, the utility model provides the following technical solutions: a spiral smoke tube heat exchange type volumetric water heater body, comprising a stainless steel shell, and also comprising: a closed combustion chamber, the closed combustion chamber is located at the central axis position in the stainless steel shell, and the upper end of the closed combustion chamber is an open end, the open end is located above the stainless steel shell, and the open end is provided with a flange plate so that the open end is connected to the fan flange, and the lower end of the closed combustion chamber extends to the lower part of the stainless steel shell; a spiral tube, the spiral tube is arranged between the inner wall of the stainless steel shell and the outer wall of the closed combustion chamber, and the lower end of the closed combustion chamber is provided with a connection extending upward Tube, the upper end of the connecting tube is integrally formed with the upper end of the spiral tube, the lower end of the spiral tube is connected with a smoke exhaust port, and the smoke exhaust port is fixed on the stainless steel shell, and the end of the smoke exhaust port away from the spiral tube is located outside the stainless steel shell, so that the smoke in the combustion chamber is discharged through the connecting tube, the spiral tube and the smoke exhaust port; a water storage space, the water storage space is formed by the outer wall of the closed combustion chamber, the inner wall of the stainless steel shell, the outer wall of the spiral tube and the space between the outer wall of the connecting tube, and the heat in the closed combustion chamber, the heat in the connecting tube and the heat in the spiral tube are all conducted to the water storage space; a magnesium rod is arranged in the water storage space, and a magnesium rod interface is arranged at the upper end of the stainless steel shell, and the magnesium rod interface is used to install the magnesium rod.

[0007] As a preferred technical solution of the utility model, the closed combustion chamber, the spiral tube and the connecting tube are all made of stainless steel; the diameter of the spiral tube is 89 mm, and the wall thickness of the spiral tube is 4 mm.

[0008] As a preferred technical solution of the utility model, a low water level sensor is provided at the lower end of the stainless steel shell, and the low water level sensor is used to detect the water level in the water storage space. A low water level sensor interface is provided at the upper end of the stainless steel shell, and the low water level sensor interface is used to electrically connect the low water level sensor to the controller.

[0009] As an optimal technical solution of the utility model, a temperature sensor is installed on the inner wall of the stainless steel shell, and the temperature sensor is used to detect the water temperature in the water storage space. A hot water temperature sensor interface is provided at the upper end of the stainless steel shell, and the hot water temperature sensor interface is used to electrically connect the temperature sensor to the controller.

[0010] As a preferred technical solution of the utility model, a T / P safety valve interface is provided at an upper end of one side of the stainless steel shell, and the T / P safety valve interface is used to install a pressure relief valve.

[0011] As a preferred technical solution of the utility model, a cold water inlet is provided at the lower end of one side of the stainless steel shell, and a hot water outlet is provided at the upper end of one side of the stainless steel shell to allow water to flow in and out of the water storage space.

[0012] As a preferred technical solution of the utility model, a sewage outlet is provided at the lower part of one side of the stainless steel shell, and the height of the sewage outlet is lower than the height of the cold water inlet.

[0013] As a preferred technical solution of the utility model, the upper end of the closed combustion chamber is connected to the upper end of the stainless steel shell by threads or welding.

[0014] Compared with the prior art, the utility model provides a spiral smoke tube heat exchange type volumetric water heater body, which has the following beneficial effects:

[0015] 1. The spiral smoke tube heat exchange volumetric water heater body has a closed combustion chamber, which has less heat loss and high thermal efficiency. It extends from the upper end to the lower end of the stainless steel shell, so that the combustion chamber can contact with water in all directions along the axial direction of the stainless steel shell, thereby greatly reducing the heat difference between the upper and lower parts of the water in the stainless steel shell, making the water temperature more uniform.

[0016] 2. The main body of the spiral smoke tube heat exchange volumetric water heater, the flue gas in the spiral smoke tube can exchange heat with water through the tube wall, and because the spiral smoke tube is completely located in the water, the flue gas is condensed throughout the exhaust process, and the condensation effect is good. The flue gas condensation reduces the humidity of the flue gas on the one hand, and reduces the temperature of the exhaust flue gas on the other hand, and can increase the temperature of the water during the heat exchange between the flue gas and water, further improving the heat utilization efficiency. In addition, the water vapor in the flue gas is recovered and condensed during condensation, which reduces the flue gas temperature and reduces the generation of particulate matter, thereby reducing the emission of waste gases such as CO and nitrogen oxides.

[0017] 3. The spiral smoke tube heat exchange volumetric water heater body is provided with a magnesium rod interface at the upper end of the stainless steel shell. The magnesium rod interface is used to install the magnesium rod. On the one hand, the magnesium rod serves as a magnesium anode, and its magnesium ions are more active than iron ions. Therefore, it will preferentially react with the magnesium in the scale, thereby protecting the stainless steel shell from corrosion; on the other hand, it softens the water quality. The magnesium rod can absorb corrosive substances in the water and reduce the formation of scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the appearance diagram of the utility model;

[0019] Figure 2 It is the front view of the utility model;

[0020] Figure 3 It is a cross-sectional view of the stainless steel inner container of the utility model in the first direction;

[0021] Figure 4 This is a cross-sectional view of the stainless steel inner liner of the utility model in the second direction.

[0022] Figure 5It is a perspective view of the utility model.

[0023] In the figure: 1. Closed combustion chamber; 101. Connecting flange; 2. Hot water outlet; 3. Magnesium rod interface; 4. Hot water temperature sensor interface; 5. Low water level sensor interface; 6. T / P safety valve interface; 7. Smoke exhaust port; 8. Cold water inlet; 9. Sewage outlet; 10. Spiral tube; 11. Connecting pipe; 12. Stainless steel shell. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Refer to the following Figure 1 - Figure 5 The spiral smoke tube heat exchange type volumetric water heater body provided in the embodiment of the utility model is described.

[0026] like Figure 1 and Figure 3 As shown, this embodiment discloses a spiral smoke tube heat exchange volumetric water heater body, including a stainless steel shell 12, and also includes a closed combustion chamber 1. The closed combustion chamber 1 is located at the central axis position in the stainless steel shell 12. The upper end of the closed combustion chamber 1 and the upper end of the stainless steel shell 12 should be connected, and the two can be connected by welding. This connection is also used to lock the position of the closed combustion chamber 1, thereby locking the closed combustion chamber 1 in the stainless steel shell 12.

[0027] Since all the arc surfaces of the closed combustion chamber 1 are located inside the stainless steel shell 12, compared with the water in the stainless steel shell 12, the arc surfaces are fully enclosed and located inside the stainless steel shell 12, that is, the heat generated by the internal combustion is conducted to the stainless steel shell 12, thereby reducing heat loss and improving thermal efficiency.

[0028] The upper end of the closed combustion chamber 1 is set as an open end, the open end is located above the stainless steel shell 12, and the open end is provided with a connecting flange 101 so that the open end is connected to a fan flange, and a gas pipe is inserted into the fan flange to facilitate the delivery of gas into the closed combustion chamber 1.

[0029] Optionally, the upper end of the closed combustion chamber 1 and the upper end of the stainless steel shell 12 are connected by threads or welding. When the two are connected by bolts, a 6-m8 threaded hole should be opened at the upper end of the stainless steel shell 12, and the outer surface of the upper end of the closed combustion chamber 1 should be equipped with corresponding threads.

[0030] The lower end of the closed combustion chamber 1 is extended to the bottom of the stainless steel shell 12, so that the length of the closed combustion chamber 1 is close to the length of the stainless steel shell 12, so that it can heat the water in the stainless steel shell 12 evenly in the length direction of the stainless steel shell 12.

[0031] In addition, since the closed combustion chamber 1 is completely closed, all the heat is directly conducted to the stainless steel housing 12 through the side walls of the closed combustion chamber 1 .

[0032] Preferably, the stainless steel housing 12 is a circular structure, and the circular stainless steel housing 12 can increase the internal water capacity and reduce the floor space.

[0033] Furthermore, the height of the stainless steel housing 12 is 1410 mm and the diameter is 708 mm.

[0034] like Figure 3 , Figure 4 and Figure 5 As shown, a spiral tube 10 is arranged in a stainless steel shell 12, and the spiral tube 10 is arranged between the inner wall of the stainless steel shell 12 and the outer wall of the closed combustion chamber 1, and a connecting tube 11 extending upward is provided at the lower end of the closed combustion chamber 1, and the upper end of the connecting tube 11 is integrally formed with the upper end of the spiral tube 10, and the lower end of the spiral tube 10 is connected to a smoke exhaust port 7, and the smoke exhaust port 7 is fixed on the stainless steel shell 12, and the end of the smoke exhaust port 7 away from the spiral tube 10 is located outside the stainless steel shell 12, so that the smoke in the combustion chamber is discharged through the connecting tube 11, the spiral tube 10 and the smoke exhaust port 7, so as to facilitate the discharge of smoke generated by combustion in the closed combustion chamber 1.

[0035] In addition, due to the spiral properties of the spiral tube 10, it can be deformed in real time according to the temperature. The dust and condensed water inside the spiral tube 10 can easily fall and be discharged, and the scale on the outside can easily fall off.

[0036] Preferably, the spiral tube 10 has a diameter of 89 mm and a wall thickness of 4 mm.

[0037] The water in the stainless steel shell 12 mentioned above is actually located between the outer wall of the closed combustion chamber 1, the inner wall of the stainless steel shell 12, the outer wall of the spiral tube 10 and the outer wall of the connecting tube 11, and the space between them forms a water storage space. The heat in the closed combustion chamber 1, the heat in the connecting tube 11 and the heat in the spiral tube 10 are all transferred to the water storage space, so that the heat in the connecting tube 11 and the heat in the spiral tube 10 can be directly recovered, avoiding the waste of heat in the flue gas caused by directly discharging the flue gas, and condensing the flue gas, thereby lowering the flue gas temperature and reducing the generation of particulate matter, thereby reducing the emission of waste gases such as CO and nitrogen oxides, and the flue gas is always in a condensation state during the discharge process, and the condensation effect is better.

[0038] Specifically, in the present embodiment, a magnesium rod is provided in the water storage space, and a magnesium rod interface 3 is provided at the upper end of the stainless steel shell 12. The magnesium rod interface 3 is used to install the magnesium rod. On the one hand, the magnesium rod serves as a magnesium anode, and its magnesium ions are more active than iron ions. Therefore, it will preferentially react with the magnesium in the scale, thereby protecting the stainless steel shell 12 from corrosion; on the other hand, it softens the water quality. The magnesium rod can absorb corrosive substances in the water and reduce the formation of scale.

[0039] Specifically, in the present embodiment, a low water level sensor is provided at the lower end of the stainless steel shell 12, and the low water level sensor is used to detect the water level in the water storage space. A low water level sensor interface 5 is provided at the upper end of the stainless steel shell 12, and the low water level sensor interface 5 is used to electrically connect the low water level sensor to the controller. When the low water level sensor interface 5 detects that there is too little water in the stainless steel shell 12, the water inlet is controlled (equipped with a corresponding controller) to maintain the water level in the stainless steel shell 12.

[0040] Specifically, in this embodiment, a temperature sensor is installed on the inner wall of the stainless steel shell 12, and a hot water temperature sensor interface 4 is provided at the upper end of the stainless steel shell 12. The hot water temperature sensor interface 4 is used to electrically connect the temperature sensor and the controller. The temperature sensor is used to detect the water temperature in the water storage space. When the water temperature is too low, the combustion degree in the combustion chamber is controlled (equipped with a corresponding controller) to increase, such as increasing the amount of natural gas.

[0041] Combination Figure 1 A T / P safety valve interface 6 is provided at the upper end of one side of the stainless steel shell 12. The T / P safety valve interface 6 is used to install a pressure relief valve, thereby avoiding the explosion of the water heater due to excessive steam generated by the stainless steel shell 12 due to excessive temperature.

[0042] like Figure 1 A cold water inlet 8 is provided at the lower end of one side of the stainless steel shell 12, and a hot water outlet 2 is provided on the upper end of the stainless steel shell 12 to allow water to flow in and out of the water storage space. Specifically, cold water enters the water storage space from the cold water inlet 8, and the heated hot water is discharged from the water storage space through the hot water outlet 2.

[0043] Preferably, a drain outlet 9 is provided at the lower side of the stainless steel shell 12, and the height of the drain outlet 9 is lower than the height of the cold water inlet 8, so as to facilitate the discharge of the bottom sediment, and a drain valve should be assembled on the drain outlet 9. When the drain valve is opened, the sewage can be discharged from the drain outlet 9.

[0044] In addition, the closed combustion chamber 1, the spiral tube 10 and the connecting tube 11 are all made of stainless steel, preferably 316 stainless steel, which has good corrosion resistance and good thermal conductivity, thereby reducing heat loss.

[0045] The working principle and use process of the utility model are as follows: when in use, cold water enters the stainless steel shell 12 from the cold water inlet 8. When burning in the closed combustion chamber 1, its temperature can be transferred to the water inside the water storage space through its own side wall, thereby heating the water. The closed combustion chamber 1 has less heat loss and high thermal efficiency, and it extends from the upper end to the lower end of the stainless steel shell 12, so that the closed combustion chamber 1 can be in full contact with water in the axial direction of the stainless steel shell 12, thereby greatly reducing the heat difference between the upper and lower parts of the water in the stainless steel shell 12, making the water temperature more uniform, avoiding the situation of alternating hot and cold, and the heated water can be discharged through the hot water outlet 2.

[0046] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0047] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spiral smoke tube heat exchange type volumetric water heater body, comprising a stainless steel shell (12), characterized in that: Also includes: A closed combustion chamber (1), the closed combustion chamber (1) being located at a central axis position in a stainless steel shell (12), and the upper end of the closed combustion chamber (1) being an open end, the open end being located above the stainless steel shell (12), and the open end being provided with a flange (101) so that the open end can be connected to a fan flange, and the lower end of the closed combustion chamber (1) extending to the lower part of the stainless steel shell (12); A spiral tube (10), the spiral tube (10) being arranged between the inner wall of a stainless steel shell (12) and the outer wall of a closed combustion chamber (1), the lower end of the closed combustion chamber (1) being provided with a connecting tube (11) extending upward, the upper end of the connecting tube (11) being integrally formed with the upper end of the spiral tube (10), the lower end of the spiral tube (10) being connected with a smoke exhaust port (7), and the smoke exhaust port (7) being fixed on the stainless steel shell (12), and the end of the smoke exhaust port (7) away from the spiral tube (10) being located outside the stainless steel shell (12), so that smoke in the combustion chamber is discharged through the connecting tube (11), the spiral tube (10) and the smoke exhaust port (7); A water storage space, the water storage space being formed by the space between the outer wall of the closed combustion chamber (1), the inner wall of the stainless steel shell (12), the outer wall of the spiral tube (10) and the outer wall of the connecting tube (11), and the heat in the closed combustion chamber (1), the heat in the connecting tube (11) and the heat in the spiral tube (10) are all transferred to the water storage space; A magnesium rod is arranged in the water storage space, and a magnesium rod interface (3) is arranged at the upper end of the stainless steel housing (12), wherein the magnesium rod interface (3) is used for installing the magnesium rod.

2. A spiral smoke tube heat exchange type volumetric water heater body according to claim 1, characterized in that: The closed combustion chamber (1), the spiral tube (10) and the connecting tube (11) are all made of stainless steel; The diameter of the spiral tube (10) is 89 mm, and the wall thickness of the spiral tube (10) is 4 mm.

3. A spiral smoke tube heat exchange type volumetric water heater body according to claim 2, characterized in that: A low water level sensor is provided at the lower end of the stainless steel housing (12), and the low water level sensor is used to detect the water level in the water storage space. A low water level sensor interface (5) is provided at the upper end of the stainless steel housing (12), and the low water level sensor interface (5) is used to electrically connect the low water level sensor to the controller.

4. A spiral smoke tube heat exchange type volumetric water heater body according to claim 3, characterized in that: A temperature sensor is installed on the inner wall of the stainless steel housing (12), and the temperature sensor is used to detect the water temperature in the water storage space. A hot water temperature sensor interface (4) is provided at the upper end of the stainless steel housing (12), and the hot water temperature sensor interface (4) is used to electrically connect the temperature sensor to the controller.

5. The spiral smoke tube heat exchange type volumetric water heater body according to claim 4, characterized in that: A T / P safety valve interface (6) is provided at an upper end of one side of the stainless steel housing (12), and the T / P safety valve interface (6) is used to install a pressure relief valve.

6. A spiral smoke tube heat exchange type volumetric water heater body according to claim 5, characterized in that: A cold water inlet (8) is provided at the lower end of one side of the stainless steel shell (12), and a hot water outlet (2) is provided at the upper end of one side of the stainless steel shell (12) so that water can flow in and out of the water storage space.

7. A spiral smoke tube heat exchange type volumetric water heater body according to any one of claims 1 to 6, characterized in that: A sewage outlet (9) is provided at the lower side of one side of the stainless steel housing (12), and the height of the sewage outlet (9) is lower than the height of the cold water inlet (8).

8. The spiral smoke tube heat exchange type volumetric water heater body according to claim 1, characterized in that: The upper end of the closed combustion chamber (1) and the upper end of the stainless steel shell (12) are connected by threads or welding.

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