All-domain mixed vacuum combined type anti-explosion condensation hot water unit

Abstract

The global mixed vacuum combined type anti-explosion condensation hot water unit comprises a vacuum heat exchanger, an air compression condenser and a negative pressure vacuum tank, the vacuum heat exchanger is mounted on the right side of the interior of a mounting frame body, a water inlet pipe is mounted at the lower end of the right side of the vacuum heat exchanger, and the lower end of the left side of the vacuum heat exchanger communicates with a first connecting pipe; a thermal dynamic shield pump is mounted on the outer side of the left end of the first connecting pipe, an air inlet pipe is arranged in the left end of the mounting frame body, and a filter valve is arranged in the middle of the air inlet pipe in a communicating mode. And the air compression condenser is mounted on the left side in the mounting frame body. The invention belongs to the technical field of condensation hot water units, and aims to solve the problems that in the prior art, only single condensation can be carried out, heat of smoke cannot be fully transmitted, and the explosion-proof effect is poor. The device has the technical effects that double condensation is realized, the heat efficiency of equipment is further improved, and meanwhile, the device has a relatively good double anti-explosion function.

Description

Technical Field

[0001] The invention relates to the technical field of condensing hot water units, and in particular to a full-range mixed-vacuum combined explosion-proof condensing hot water unit. Background Art

[0002] Faced with the severe challenges of energy shortage and environmental pollution, energy conservation and environmental protection have become the common goals pursued by all industries. Condensing water heaters, as efficient and environmentally friendly thermal energy equipment, play an important role in heating and hot water supply. Condensing technology is to reduce the exhaust temperature of the flue gas produced by combustion and recover the latent heat and sensible heat in the flue gas, thereby improving the thermal efficiency. At present, the common heat source of condensing water heaters is to burn natural gas, liquefied petroleum gas and other fuels through flame spraying to produce high-temperature flue gas. These flue gases exchange heat with water in the heat exchanger, transfer heat to water, and thus heat the water.

[0003] Currently, full premixed combustion technology is a more cutting-edge combustion research and development direction in condensing water heaters. Different from the traditional flame-jet combustion method, full premixed combustion is to fully mix the fuel and air in advance, and then send the mixed gas into the nozzle for ignition and combustion. However, most condensing water heaters can only perform a single condensation on the high-temperature flue gas generated by combustion, resulting in the inability to fully transfer the heat of the flue gas, thereby reducing the overall thermal efficiency. At the same time, the explosion-proof effect is poor and there are certain defects. Summary of the invention

[0004] To this end, the present invention provides a full-range mixed vacuum combined explosion-proof condensing water heater unit to solve the above-mentioned problems in the prior art.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] According to a first aspect of the present invention, a fully mixed vacuum combined explosion-proof condensing hot water unit comprises a vacuum heat exchanger, an air-compressed condenser and a negative pressure vacuum tank, wherein the vacuum heat exchanger is mounted on the right side of the mounting frame, and a water inlet pipe is mounted on the lower right end of the vacuum heat exchanger, a first connecting pipe is connected to the lower left end of the vacuum heat exchanger, and a thermal shielded pump is mounted on the outer side of the left end of the first connecting pipe, an air inlet pipe is arranged inside the left end of the mounting frame, and a filter valve is connected to the middle of the air inlet pipe;

[0007] The air compression condenser is installed on the left side of the mounting frame, and the air compression condenser is connected with the thermal shielding pump through the first connecting pipe, and the second connecting pipe is installed on the right side of the upper end of the air compression condenser, and the upper right end of the vacuum heat exchanger is installed with a water outlet pipe;

[0008] The negative pressure vacuum tank is installed on the outer side of the upper end of the air pressure condenser.

[0009] Furthermore, a gas proportional valve connected to the air inlet pipe is installed on the outer side of the lower end of the filter valve, and a variable frequency fan is installed on the outer side of the lower end of the gas proportional valve, and the variable frequency fan is located on the left side of the air compression condenser.

[0010] Furthermore, a mounting cylinder is installed at the rear end of the filter valve, and a filter screen is integrated inside the mounting cylinder. The filter valve and the mounting cylinder are connected in a threaded manner, and the upper end of the mounting cylinder extends to the outside of the lower end of the intake pipe.

[0011] Furthermore, a spiral plate is fixedly installed inside the upper end of the mounting tube, and the spiral plate units are arranged alternately front and back, and the spiral plate is located outside the lower end of the intake pipe.

[0012] Furthermore, a nozzle is provided at the upper left end of the air compression condenser, and the upper end of the variable frequency fan extends to the upper left end of the air compression condenser and is connected to the nozzle through a flange.

[0013] Furthermore, a pressure gauge is installed on the outside of the upper wall end of the negative pressure vacuum tank, and a pressure switch located on the outside of the upper wall end of the negative pressure vacuum tank is provided on the outside of the right end of the pressure gauge. A connecting pipe is provided on the outside of the right end of the negative pressure vacuum tank, and a gas tank is installed on the left side of the upper end of the negative pressure vacuum tank.

[0014] Furthermore, a smoke exhaust pipe is connected to the lower right end of the air compression condenser, and the right end of the smoke exhaust pipe extends to the outside of the right end of the mounting frame.

[0015] Furthermore, an air outlet pipe is connected to the outer side of the upper end of the gas tank, and a vacuum check valve, a three-way solenoid valve and an air pump are connected to the inside of the air outlet pipe in sequence from left to right.

[0016] Furthermore, the upper ends of the air inlet pipe, the water outlet pipe and the negative pressure vacuum tank all extend to the outer side of the upper end of the mounting frame, and the longitudinal sections of the water outlet pipe and the negative pressure vacuum tank are both "L"-shaped structures.

[0017] Furthermore, the second connecting pipe is connected to the upper left end of the vacuum heat exchanger, and the second connecting pipe is connected to the connecting pipe.

[0018] The present invention has the following advantages:

[0019] 1. When the flue gas temperature is 40-50 degrees Celsius, the air compressor condenser absorbs heat and transfers the heat through compression. The temperature difference between the upper and lower heat exchangers of the air compressor condenser causes the high-temperature exhaust gas to instantly cool down at the tail end, and the gas turns into liquid to produce condensation, which provides additional heat for the equipment unit. The thermal efficiency of the equipment is improved through compression, so that the overall second-stage exhaust temperature is within 20°C, and combined with its own condensation, double condensation is achieved to further improve the thermal efficiency of the equipment;

[0020] 2. Through the vacuum heat exchanger, the material of the vacuum heat exchanger is silicon magnesium aluminum. The fully automatic vacuum pump makes the vacuum heat exchanger vacuum inside, lowers the boiling point of water, and when the water temperature reaches a high temperature, the water vapor mixes, the heat exchange efficiency is higher, the heating speed is faster and more energy-saving. At the same time, the internal vacuum also ensures the safety of the vacuum heat exchanger, achieving a high-pressure explosion-proof structure in the water chamber. Combined with the combustion of premixed gases, the hidden dangers of explosion in the combustion chamber of traditional boilers are solved, thereby achieving a double explosion-proof effect and improving the overall safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A front cross-sectional view of a fully mixed vacuum combined explosion-proof condensing water heater unit provided in some embodiments of the present invention.

[0022] Figure 2 A side cross-sectional view of a fully mixed vacuum combined explosion-proof condensing water heater unit provided in some embodiments of the present invention.

[0023] Figure 3 A side cross-sectional view of the connection between the mounting cylinder and the filter valve of a fully mixed vacuum combined explosion-proof condensing water heater unit provided in some embodiments of the present invention.

[0024] Figure 4 A front view of the connection between the gas tank and the mounting tube of a full-range mixed vacuum combined explosion-proof condensing water heater unit provided in some embodiments of the present invention.

[0025] In the figure: 1. mounting frame; 2. vacuum heat exchanger; 3. water inlet pipe; 4. first connecting pipe; 5. thermal shielding pump; 6. air compressor condenser; 7. air inlet pipe; 8. filter valve; 9. gas proportional valve; 10. variable frequency fan; 11. second connecting pipe; 12. water outlet pipe; 13. negative pressure vacuum tank; 14. connecting pipe; 15. gas tank; 16. mounting tube; 17. filter screen; 18. spiral plate; 19. air outlet pipe; 20. vacuum check valve; 21. three-phase solenoid valve; 22. vacuum pump; 23. exhaust pipe; 24. nozzle. DETAILED DESCRIPTION

[0026] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Example 1

[0028] like Figures 1 to 4As shown, the full-range mixed vacuum combined explosion-proof condensing hot water unit in the embodiment of the first aspect of the present invention includes: a vacuum heat exchanger 2 is installed on the right side of the inside of the mounting frame 1, and a water inlet pipe 3 is installed at the lower end of the right side of the vacuum heat exchanger 2, and a water outlet pipe 12 is installed at the upper end of the right side of the vacuum heat exchanger 2, and an air inlet pipe 7 is arranged inside the left end of the mounting frame 1, and the upper ends of the air inlet pipe 7, the water outlet pipe 12 and the negative pressure vacuum tank 13 all extend to the outside of the upper end of the mounting frame 1, and the longitudinal sections of the water outlet pipe 12 and the negative pressure vacuum tank 13 are both "L"-shaped structures. Before use, the water inlet pipe 3, the water outlet pipe 12 and the air inlet pipe 7 are respectively installed with the designated pipes through flanges to facilitate water to enter the vacuum heat exchanger 2 through the water inlet pipe 3.

[0029] The left lower end of the vacuum heat exchanger 2 is connected with a first connecting pipe 4, and a thermal shielded pump 5 is installed on the outer side of the left end of the first connecting pipe 4. The air-compressed condenser 6 is installed on the left side of the mounting frame 1, and the air-compressed condenser 6 is connected with the thermal shielded pump 5 through the first connecting pipe 4. The thermal shielded pump 5 is started, and the thermal shielded pump 5 improves the heat energy transmission efficiency of various working conditions in the early stage, so that the water in the vacuum heat exchanger 2 can flow into the air-compressed condenser 6 through the first connecting pipe 4 and the thermal shielded pump 5. When the thermal shielded pump 5 is operated in the temperature range of 20-80°C, the heat source inside the vacuum heat exchanger 2 will boil automatically under the high temperature condition of 80-85°C due to the high activity of water under vacuum, thereby realizing phase-changing heat exchange. At the same time, the water vapor accelerates the heat energy transfer process between steam and water through the negative pressure transmission effect of the thermal shielded pump 5, so that the system temperature quickly returns to a lower level and then enters the vacuum heat exchanger 2 again for circulation. This efficient thermal transmission mechanism significantly improves the overall heat exchange efficiency.

[0030] A filter valve 8 is provided in the middle of the air inlet pipe 7, and a gas proportional valve 9 connected to the air inlet pipe 7 is installed on the outer side of the lower end of the filter valve 8, and a variable frequency fan 10 is installed on the outer side of the lower end of the gas proportional valve 9. During combustion, the variable frequency fan 10 is started to allow the premixed gas of natural gas and air to enter the filter valve 8, the gas proportional valve 9 and the variable frequency fan 10 in sequence through the air inlet pipe 7. The variable frequency fan 10 is located on the left side of the air compression condenser 6, and a nozzle 24 is provided on the upper left end of the air compression condenser 6, and the upper end of the variable frequency fan 10 extends to the upper left end of the air compression condenser 6 and is connected to the nozzle 24 through a flange. The premixed gas enters the nozzle 24 through the variable frequency fan 10 and is ignited and burned, thereby generating a large amount of heat. There is no manufacturing process of a traditional boiler with a pot, and thus there is no complicated return combustion chamber, thereby solving the hidden danger of explosion in the combustion chamber of a traditional boiler, which is the first explosion-proof structure. When the flue gas temperature is between 40 and 50 degrees Celsius, the air compression condenser 6 absorbs heat and transfers the heat through compression. The temperature difference between the upper and lower heat exchangers of the air compression condenser 6 causes the high-temperature exhaust gas to instantly cool down at the tail end, and the gas turns into liquid to produce condensation, thereby providing additional heat for the equipment unit. The thermal efficiency of the equipment is improved through compression, and the overall second-stage exhaust temperature is within 20°C, further improving the thermal efficiency of the equipment. The lower right end of the air compression condenser 6 is connected to a smoke exhaust pipe 23, and the right end of the smoke exhaust pipe 23 extends to the outside of the right end of the mounting frame 1, and the smoke generated by combustion is discharged through the smoke exhaust pipe 23.

[0031] A mounting cylinder 16 is installed at the rear end of the interior of the filter valve 8, and a filter screen 17 is integrated inside the mounting cylinder 16. The filter valve 8 is connected to the mounting cylinder 16 in a threaded manner, and the upper end of the mounting cylinder 16 extends to the outer side of the lower end of the intake pipe 7. The premixed gas enters the mounting cylinder 16 through the intake pipe 7, and the gas is filtered by the filter screen 17 to remove impurities in the gas and improve the gas combustion efficiency. A spiral plate 18 is fixedly installed inside the upper end of the mounting cylinder 16, and the spiral plates 18 are alternately arranged front and back, and the spiral plates 18 are located on the outer side of the lower end of the intake pipe 7. The spiral plate 18 has a good disturbing effect on the gas, which is convenient for gas diversion. The interaction between the groups of airflows makes it easier to separate impurities and fuel gas, thereby playing a role in thoroughly filtering impurities. At the same time, a group of filter valves 8 are installed on the outer side of the left end of the filter valve 8 through pipes and joints. When it is necessary to clean the filtered impurities, the solenoid valves at the corresponding positions of the two groups of filter valves 8 of the vacuum heat exchanger are started and closed respectively, the filter valve 8 to be cleaned is closed, and the other group of filter valves 8 is opened, thereby achieving the effect of cleaning without stopping the unit;

[0032] A second connecting pipe 11 is installed on the right side of the upper end of the air compression condenser 6. The second connecting pipe 11 is connected to the upper left end of the vacuum heat exchanger 2. The heated water enters the vacuum heat exchanger 2 through the second connecting pipe 11. The vacuum heat exchanger 2 is made of silicon-magnesium-aluminum. The fully automatic vacuum pump makes the vacuum heat exchanger 2 vacuum inside, lowers the boiling point of water, and when the water temperature reaches a high temperature, the water vapor mixes, the heat exchange efficiency is higher, the heating speed is faster and more energy-saving. At the same time, the internal vacuum also ensures the safety of the vacuum heat exchanger 2, that is, the water chamber has no high-pressure explosion-proof structure as the second explosion-proof structure, thereby achieving a double explosion-proof effect and improving the overall safety of use. The heated water is discharged through the outlet pipe 12.

[0033] The negative pressure vacuum tank 13 is installed on the outer side of the upper end of the air pressure condenser 6, and the outer side of the right end of the negative pressure vacuum tank 13 is connected to a connecting pipe 14, and a gas tank 15 is installed on the left side of the upper end of the negative pressure vacuum tank 13, and the second connecting pipe 11 is connected to the connecting pipe 14. The negative pressure vacuum tank 13 can improve the heat exchange efficiency. The pressure inside the negative pressure vacuum tank 13 is lower than the atmospheric pressure, which reduces the boiling point of water, so that water can start to boil and generate steam at a lower temperature. In this way, effective heat exchange can be achieved even at a relatively low temperature, thereby improving the heat exchange efficiency of the entire system. The outer side of the upper end of the gas tank 15 is connected to an exhaust pipe 19, and the interior of the exhaust pipe 19 is connected to a vacuum check valve 20, a three-phase solenoid valve 21 and an exhaust pump 22 from left to right.

[0034] An air outlet pipe 19 is provided on the outer side of the upper end of the gas tank 15, and the interior of the air outlet pipe 19 is connected to a vacuum check valve 20, a three-way solenoid valve 21 and an air pump 22 in sequence from left to right. A pressure gauge is installed on the outer side of the upper wall end of the negative pressure vacuum tank 13, and a pressure switch located on the outer side of the right end of the pressure gauge is provided on the outer side of the upper wall end of the negative pressure vacuum tank 13, which is used to monitor and control the pressure state of the negative pressure vacuum tank 13. The vacuum check valve 20, the three-way solenoid valve 21 and the air pump 22 can continuously extract the air and other non-condensable gases leaked into the negative pressure vacuum tank 13 when working, and maintain its high vacuum state, thereby improving the heat exchange efficiency, and preventing safety hazards caused by air accumulation, such as explosion risks.

Claims

1. A fully mixed vacuum combined explosion-proof condensing hot water unit, comprising a vacuum heat exchanger (2), an air pressure condenser (6) and a negative pressure vacuum tank (13), characterized in that: The vacuum heat exchanger (2) is installed on the right side of the mounting frame (1), and a water inlet pipe (3) is installed at the lower end of the right side of the vacuum heat exchanger (2); the lower end of the left side of the vacuum heat exchanger (2) is connected to a first connecting pipe (4), and a thermal shielding pump (5) is installed on the outer side of the left end of the first connecting pipe (4); an air inlet pipe (7) is arranged inside the left end of the mounting frame (1), and a filter valve (8) is connected to the middle of the air inlet pipe (7); The air compression condenser (6) is installed on the left side of the interior of the installation frame (1), and the air compression condenser (6) is connected to the thermal shielding pump (5) through a first connecting pipe (4), and a second connecting pipe (11) is installed on the right side of the upper end of the air compression condenser (6), and a water outlet pipe (12) is installed on the upper right end of the vacuum heat exchanger (2); The negative pressure vacuum tank (13) is installed on the outer side of the upper end of the air pressure condenser (6).

2. The full-range mixed vacuum combined explosion-proof condensing water heater unit according to claim 1 is characterized in that: A gas proportional valve (9) connected to the air inlet pipe (7) is installed on the outer side of the lower end of the filter valve (8), and a variable frequency fan (10) is installed on the outer side of the lower end of the gas proportional valve (9), and the variable frequency fan (10) is located on the left side of the air compression condenser (6).

3. The full-range mixed vacuum combined explosion-proof condensing water heater unit according to claim 2 is characterized in that: A mounting cylinder (16) is installed at the rear end of the filter valve (8), and a filter screen (17) is integrally installed inside the mounting cylinder (16); the filter valve (8) and the mounting cylinder (16) are connected in a threaded manner, and the upper end of the mounting cylinder (16) extends to the outer side of the lower end of the air inlet pipe (7).

4. The full-range mixed vacuum combined explosion-proof condensing water heater unit according to claim 3 is characterized in that: A spiral plate (18) is fixedly installed inside the upper end of the installation cylinder (16), and the spiral plates (18) are arranged alternately front and back, and the spiral plates (18) are located outside the lower end of the intake pipe (7).

5. The full-range mixed vacuum combined explosion-proof condensing water heater unit according to claim 1 is characterized in that: A nozzle (24) is provided at the upper left end of the air compression condenser (6), and the upper end of the variable frequency fan (10) extends to the upper left end of the air compression condenser (6) and is connected to the nozzle (24) via a flange.

6. The full-range mixed vacuum combined explosion-proof condensing water heater unit according to claim 1 is characterized in that: A pressure gauge is installed on the outer side of the upper wall end of the negative pressure vacuum tank (13), and a pressure switch is arranged on the outer side of the right end of the pressure gauge and located on the outer side of the upper wall end of the negative pressure vacuum tank (13). A connecting pipe (14) is arranged on the outer side of the right end of the negative pressure vacuum tank (13), and a gas tank (15) is installed on the left side of the upper end of the negative pressure vacuum tank (13).

7. The full-range mixed vacuum combined explosion-proof condensing water heater unit according to claim 1 is characterized in that: The lower right end of the air compression condenser (6) is connected to a smoke exhaust pipe (23), and the right end of the smoke exhaust pipe (23) extends to the outside of the right end of the mounting frame (1).

8. The full-range mixed vacuum combined explosion-proof condensing water heater unit according to claim 6 is characterized in that: The upper end of the gas tank (15) is connected to the outer side thereof with an air outlet pipe (19), and the inside of the air outlet pipe (19) is connected to a vacuum check valve (20), a three-way solenoid valve (21) and an air pump (22) in sequence from left to right.

9. The full-range mixed vacuum combined explosion-proof condensing water heater unit according to claim 1, characterized in that: The upper ends of the air inlet pipe (7), the water outlet pipe (12) and the negative pressure vacuum tank (13) all extend to the outer side of the upper end of the mounting frame (1), and the longitudinal sections of the water outlet pipe (12) and the negative pressure vacuum tank (13) are both "L"-shaped structures.

10. The full-range mixed vacuum combined explosion-proof condensing water heater unit according to claim 1, characterized in that: The second connecting pipe (11) is connected to the upper left end of the vacuum heat exchanger (2), and the second connecting pipe (11) is connected to the connecting pipe (14).

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