CN214199186U - Large-scale water-fire direct heat exchange type boiler - Google Patents
Large-scale water-fire direct heat exchange type boiler Download PDFInfo
- Publication number
- CN214199186U CN214199186U CN202023345346.5U CN202023345346U CN214199186U CN 214199186 U CN214199186 U CN 214199186U CN 202023345346 U CN202023345346 U CN 202023345346U CN 214199186 U CN214199186 U CN 214199186U
- Authority
- CN
- China
- Prior art keywords
- water
- furnace body
- moisturizing
- grid plate
- direct heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The utility model relates to a large-scale direct heat transfer formula boiler of water fire belongs to boiler equipment technical field, the utility model discloses only be applicable to the technical problem of the less specification tonnage of preparation that mainly solves the existence of current direct heat transfer boiler of water fire. The technical scheme of the utility model is that: the utility model provides a large-scale direct heat transfer formula boiler of water fire, includes the pipe of discharging fume of furnace body, vertical setting and establishes the moisturizing case in the furnace body outside, furnace body inner chamber lower part is equipped with the storage water tank, furnace body top surface middle part is equipped with the exhaust port, furnace body one side lateral wall lower part is equipped with the delivery port, furnace body opposite side lateral wall lower part is equipped with moisturizing mouth and drain, the moisturizing mouth passes through moisturizing pipeline and moisturizing case intercommunication, be equipped with moisturizing flow control valve on the moisturizing pipeline, large-scale direct heat transfer formula boiler of water fire still includes a plurality of combustor devices, hydrologic cycle system and controlling means. The utility model has the advantages of structural design is reasonable, easy and simple to handle, heat exchange efficiency is high, safe practicality.
Description
Technical Field
The utility model belongs to the technical field of boiler equipment, concretely relates to large-scale water fire direct heat transfer formula boiler.
Background
Traditional boiler separates water and high temperature flame, flue gas through the tubular metal resonator to heat-conduction mode carries out the heat exchange, and not only the structure is complicated, and its heat exchange efficiency completely depends on the coefficient of heat conductivity and the effective heating area of tubular metal resonator, but also easily produces the incrustation scale and influences heat exchange efficiency. Compared with the traditional boiler, the water-fire direct heat exchange type boiler has the advantages of low energy consumption, high heat efficiency, simple equipment and the like.
Along with the research and development of the direct water-fire heat exchange boiler, the direct water-fire heat exchange boiler can be rapidly popularized due to the advantages of high efficiency, energy conservation, low cost, wide range of applicable fuels and the like, but the direct water-fire heat exchange boiler is limited by a heat exchange mode and combustion flaming factors and is only suitable for manufacturing boilers with smaller specification tonnage.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's shortcoming, provide a large-scale water fire direct heat transfer formula boiler, solve the technical problem that only is applicable to the less specification tonnage of preparation that current water fire direct heat transfer boiler exists.
In order to solve the above problem, the technical scheme of the utility model is that: the utility model provides a large-scale direct heat transfer formula boiler of water fire, includes the pipe of discharging fume of furnace body, vertical setting and establishes the moisturizing case in the furnace body outside, furnace body inner chamber lower part is equipped with the storage water tank, furnace body top surface middle part is equipped with the exhaust port, furnace body one side lateral wall lower part is equipped with the delivery port, furnace body opposite side lateral wall lower part is equipped with moisturizing mouth and drain, the moisturizing mouth passes through moisturizing pipeline and moisturizing case intercommunication, be equipped with moisturizing flow control valve on the moisturizing pipeline, wherein: the large-scale water-fire direct heat exchange type boiler also comprises a plurality of burner devices, a water circulation system and a control device;
the furnace body is a cylindrical barrel, the lower end of the smoke exhaust pipe extends into the furnace body from a smoke exhaust port, and a water spraying plate is arranged between the bottom edge of one end of the smoke exhaust pipe extending into the furnace body and the side wall of the inner cavity of the cylindrical furnace body in the circumferential horizontal direction; a spray water tank is arranged between the outer side wall of the furnace body section and the inner side wall of the upper part of the inner cavity of the furnace body, wherein the spray water plate and the smoke exhaust pipe extend into the space between the outer side wall of the furnace body section and the inner side wall of the upper part of the inner cavity of the furnace body; a spray header is arranged in the smoke exhaust pipe; a spray pipe is arranged in the middle of the inner cavity of the furnace body along the spiral direction of the inner wall, and a plurality of spray heads are arranged on the spray pipe;
the middle part of the inner cavity of the furnace body is sequentially provided with a first water spraying grate plate, a second water spraying grate plate, a third water spraying grate plate and a fourth water spraying grate plate from top to bottom, and the diameter sizes of the first water spraying grate plate, the second water spraying grate plate, the third water spraying grate plate and the fourth water spraying grate plate are all consistent with the diameter size of the inner cavity of the furnace body;
a plurality of burner device mounting holes are formed in the circumferential direction below the fourth water spraying grate plate and at the middle lower part of the side wall of the furnace body, flame spraying anti-spraying pipes are arranged on the side wall of the inner cavity of the furnace body at positions corresponding to the burner device mounting holes, the burner devices are arranged outside the burner device mounting holes, and the flame spraying ends of the burner devices extend into the flame spraying anti-spraying pipes from the burner device mounting holes;
the water circulation system comprises a high-pressure circulating water pump, an exchanger, a four-way connector and a plurality of connecting water pipes; the water outlet is connected with a water inlet of a high-pressure circulating water pump through a connecting water pipe, a water outlet of the high-pressure circulating water pump is communicated with a circulating water inlet of the exchanger through the connecting water pipe, a circulating water outlet of the exchanger is communicated with an inlet of a four-way connector through the connecting water pipe, and three outlets of the four-way connector are respectively communicated with the spray header, the spray water tank and the spray pipe through the connecting water pipes;
a plurality of furnace temperature detection probes are arranged on the inner wall of the furnace body; the control device is arranged on the upper part of the outer side wall of the furnace body, a display screen is arranged on the control device, and the control device is electrically connected with the display screen, the high-pressure circulating water pump, the water replenishing flow control valve and the plurality of furnace temperature detection probes respectively.
Further, the side wall of the furnace body and the bottom of the furnace body sequentially comprise a stainless steel plate inner layer, a heat preservation layer, a carbon steel plate layer and a color steel plate surface layer from inside to outside, the thickness of the stainless steel plate inner layer is 7-10 mm, the thickness of the heat preservation layer is 5-10 cm, the thickness of the carbon steel plate layer is 5-10 mm, and the thickness of the color steel plate surface layer is 2-3 mm.
Furthermore, an outer annular channel is arranged on the first water spraying grid plate, circular through holes are formed in the middle parts of the second water spraying grid plate and the fourth water spraying grid plate, and an inner annular channel is arranged on the third water spraying grid plate; the outer diameter of the outer annular channel is smaller than the diameter of the inner cavity of the furnace body, the inner diameter of the outer annular channel is equal to the outer diameter of the inner annular channel, and the inner diameter of the inner annular channel is equal to the diameter of the circular through hole.
Further, a water level monitor is arranged in the water storage tank and electrically connected with the control device.
Further, the middle part of the side wall of the rear side of the furnace body is provided with an access hole, and an access door is arranged at the access hole.
The utility model adopts the above technical scheme, following beneficial effect has:
1) the cylindrical furnace body is selected, the fixed thinking that the heat exchange area of the original direct heat exchange boiler is increased by lengthening and heightening is broken through, the diameter of the furnace body can be adjusted according to actual requirements, and space conditions are created for realizing large-scale development of the boiler;
2) the utility model can set a plurality of burner devices in the circumferential direction of the furnace body to work simultaneously according to the actual demand, breaks through the traditional method that the power of the boiler is improved by simply increasing the power of the burner devices in the original direct heat exchange boiler, and creates the power condition for realizing the large-scale development of the boiler;
3) the utility model discloses a vertical trickle (the trickle board from top to bottom trickle) and the horizontal technology of spraying water (the shower of spiral setting transversely sprays water) combine together for evenly be covered with the drop of water in the furnace body inner chamber, avoided the direct heat transfer boiler of raw water fire only through the trickle and the water fire that exists mixes incomplete technical problem, created abundant heat transfer condition for realizing the large-scale development of boiler.
4) The circular through hole is formed in the middle of the fourth water spraying grate plate, flame heat sprayed by the fire spraying pipe is directly introduced into the center of the furnace body, so that the heat naturally rises along the center of the furnace body and is mixed with falling water, and the direct influence on the furnace wall due to dry burning of the furnace wall is avoided; the first water spraying grid plate, the second water spraying grid plate, the third water spraying grid plate and the fourth water spraying grid plate are reasonably arranged for the channel of the heat exchange boiler, and the impact of heat concentration on the boiler wall can be effectively avoided.
The beneficial effects are that the heat source, the water source, the space and the heat exchange of the water-fire heat exchange boiler are organically combined, and the conditions are created for the large-scale development of the traditional water-fire direct heat exchange boiler. Compared with the prior art, the utility model has the advantages of structural design is reasonable, easy and simple to handle, heat exchange efficiency is high, safe practicality.
Drawings
Fig. 1 is a front view of the present invention;
FIG. 2 is a schematic sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic structural view of a first water-sprinkling grid plate;
FIG. 4 is a schematic structural view of a second water spray grid plate and a fourth water spray grid plate;
fig. 5 is a schematic structural view of a third water-sprinkling grid plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1 to 5, a large-scale direct water-fire heat exchange type boiler comprises a boiler body 1, a vertically arranged smoke exhaust pipe 2 and a water replenishing tank 3 arranged outside the boiler body 1, wherein a water storage tank 4 is arranged on the lower part of the inner cavity of the boiler body 1, a smoke exhaust port 1-1 is arranged in the middle of the top surface of the boiler body 1, a water outlet 1-2 is arranged on the lower part of the side wall on one side of the boiler body 1, a water replenishing port 1-3 and a sewage discharge port 1-4 are arranged on the lower part of the side wall on the other side of the boiler body 1, the water replenishing port 1-3 is communicated with the water replenishing tank 3 through a water replenishing pipeline, and a water replenishing flow control valve 5 is arranged on the water replenishing pipeline, wherein: the large-scale water-fire direct heat exchange type boiler also comprises a plurality of burner devices 6, a water circulation system and a control device 7;
the furnace body 1 is a cylindrical cylinder, the lower end of the smoke exhaust pipe 2 extends into the furnace body 1 from a smoke exhaust port 1-1, and a water spraying plate 8 is arranged between the bottom edge of one end of the smoke exhaust pipe 2 extending into the furnace body 1 and the side wall of the inner cavity of the cylindrical furnace body 1 in the circumferential horizontal direction; a spray water tank 9 is arranged between the outer side wall of the section of the furnace body 1 and the inner side wall of the upper part of the inner cavity of the furnace body 1, wherein the spray water plate 8 and the smoke exhaust pipe 2 extend into the space between the outer side wall of the section of the furnace body 1 and the inner side wall of the upper part of the inner cavity of the furnace body 1; a spray header 10 is arranged in the smoke exhaust pipe 2; a spray pipe 11 is arranged in the middle of the inner cavity of the furnace body 1 along the spiral direction of the inner wall, and a plurality of spray heads are arranged on the spray pipe 11;
a first water spraying grate plate 21, a second water spraying grate plate 22, a third water spraying grate plate 23 and a fourth water spraying grate plate 24 are sequentially arranged in the middle of the inner cavity of the furnace body 1 from top to bottom, and the diameter sizes of the first water spraying grate plate 21, the second water spraying grate plate 22, the third water spraying grate plate 23 and the fourth water spraying grate plate 24 are all consistent with the diameter size of the inner cavity of the furnace body 1;
a plurality of burner device mounting holes 1-5 are formed in the circumferential direction below the fourth water spraying grate plate 24 and in the middle lower part of the side wall of the furnace body 1, flame spraying anti-spraying pipes 12 are arranged on the side wall of the inner cavity of the furnace body 1 at positions corresponding to the burner device mounting holes 1-5, the burner devices 6 are arranged outside the burner device mounting holes 1-5, and the flame spraying ends of the burner devices 6 extend into the flame spraying anti-spraying pipes 12 from the burner device mounting holes 1-5;
the water circulation system comprises a high-pressure circulating water pump 13, an exchanger 14, a four-way connector 15 and a plurality of connecting water pipes; the water outlet 1-2 is connected with a water inlet of a high-pressure circulating water pump 13 through a connecting water pipe, a water outlet of the high-pressure circulating water pump 13 is communicated with a circulating water inlet of an exchanger 14 through a connecting water pipe, a circulating water outlet of the exchanger 14 is communicated with an inlet of a four-way connector 15 through a connecting water pipe, and three outlets of the four-way connector 15 are respectively communicated with a spray header 10, a spray water tank 9 and a spray pipe 11 through connecting water pipes;
a plurality of furnace temperature detection probes 16 are arranged on the inner wall of the furnace body 1; the control device 7 is arranged on the upper portion of the outer side wall of the furnace body 1, a display screen is arranged on the control device 7, and the control device 7 is electrically connected with the display screen, the high-pressure circulating water pump 13, the water replenishing flow control valve 5 and the plurality of furnace temperature detection probes 16 respectively.
The furnace body comprises a side wall of the furnace body 1 and a bottom of the furnace body 1 from inside to outside, and sequentially comprises a stainless steel plate inner layer 17, a heat preservation layer 18, a carbon steel plate layer 19 and a color steel plate surface layer 20, wherein the thickness of the stainless steel plate inner layer 17 is 7-10 mm, the thickness of the heat preservation layer 18 is 5-10 cm, the thickness of the carbon steel plate layer 19 is 5-10 mm, and the thickness of the color steel plate surface layer 20 is 2-3 mm.
An outer annular channel 25 is arranged on the first water spraying grid plate 21, circular through holes 26 are formed in the middle parts of the second water spraying grid plate 22 and the fourth water spraying grid plate 24, and an inner annular channel 27 is arranged on the third water spraying grid plate 23; the outer diameter of the outer annular passage 25 is smaller than the diameter of the inner cavity of the furnace body 1, the inner diameter of the outer annular passage 25 is equal to the outer diameter of the inner annular passage 27, and the inner diameter of the inner annular passage 27 is equal to the diameter of the circular through hole 26.
A water level monitor 28 is arranged in the water storage tank 4, and the water level monitor 28 is electrically connected with the control device 7.
The middle part of the side wall of the rear side of the furnace body 1 is provided with an access hole 29, and an access door is arranged at the access hole 29.
The utility model discloses a working process and principle:
1) firstly, a control device 7 starts a water replenishing flow control valve 5, and water is fed into a water storage tank 4 from a water replenishing tank 3;
2) the high-pressure circulating water pump 13 is started through the control device 7, water in the water storage tank 4 is pressurized by the circulating pump 13 and then flows through the exchanger 14 and the four-way joint 15, and then flows to the spray header 10, the spray water tank 9 and the spray pipe 11 respectively, the spray header 10 sprays longitudinally from top to bottom, water in the spray water tank 9 sprays longitudinally from the spray plate 8 downwards, the spray pipe 11 sprays transversely from the inner wall of the furnace body 1 to the middle of the furnace body in a spiral direction, and the inner cavity of the furnace body 1 is filled with water mist;
3) starting the burner device 6, spraying the flame sprayed by the burner device 6 to the middle part of the furnace body 1 through the flame spraying anti-spraying pipe 12, passing the high-temperature flame and hot gas through the circular through hole 26 in the middle part of the fourth water spraying grid plate 24 to run upwards, passing the high-temperature flame and the hot gas through the inner annular channel 27 on the third water spraying grid plate 23 to run upwards, and passing the high-temperature flame and the hot gas through the circular through hole 26 in the middle part of the second water spraying grid plate 22 to run upwards; finally, an outer annular channel 25 arranged on the first water spraying grid plate 21 penetrates through the first water spraying grid plate; in the operation process, heat exchange is realized after the high-temperature flame and the hot gas contact with the water mist in the furnace body 1, and heat moves upwards along with the smoke and is finally discharged by the smoke discharge pipe 2.
The plurality of furnace temperature detection probes 16 can transmit the temperature of the inner cavity of the furnace body 1 to the display screen in real time through the control device 7, observe the temperature of the furnace body through the display screen, close the burner device 6 after reaching the proper temperature, and then close the high-pressure circulating water pump 14 through the control device 7.
The water level monitor 28 can detect the water level in the water storage tank 4 in real time, when the water level is lower than the lowest limit, a signal is sent to the control device 7, the water replenishing flow control valve 5 is started through the control device 7, and the water replenishing tank 3 replenishes water into the water storage tank 4 until the water level reaches the highest level.
Claims (5)
1. The utility model provides a direct heat transfer formula boiler of large-scale water fire, includes furnace body (1), the pipe of discharging fume (2) of vertical setting and establishes moisturizing case (3) in the furnace body (1) outside, furnace body (1) inner chamber lower part is equipped with storage water tank (4), furnace body (1) top surface middle part is equipped with exhaust port (1-1), furnace body (1) one side lateral wall lower part is equipped with delivery port (1-2), furnace body (1) opposite side lateral wall lower part is equipped with moisturizing mouth (1-3) and drain (1-4), moisturizing mouth (1-3) are through moisturizing pipeline and moisturizing case (3) intercommunication, be equipped with moisturizing flow control valve (5) on the moisturizing pipeline, its characterized in that: the large-scale water-fire direct heat exchange type boiler also comprises a plurality of burner devices (6), a water circulation system and a control device (7);
the furnace body (1) is a cylindrical cylinder, the lower end of the smoke exhaust pipe (2) extends into the furnace body (1) from a smoke exhaust port (1-1), and a water spraying plate (8) is arranged between the bottom edge of one end, extending into the furnace body (1), of the smoke exhaust pipe (2) and the side wall of the inner cavity of the cylindrical furnace body (1) in the circumferential horizontal direction; a spray water tank (9) is arranged between the outer side wall of the section of the furnace body (1) and the inner side wall of the upper part of the inner cavity of the furnace body (1) where the water spray plate (8) and the smoke exhaust pipe (2) extend; a spray header (10) is arranged in the smoke exhaust pipe (2); a spray pipe (11) is arranged in the middle of the inner cavity of the furnace body (1) along the spiral direction of the inner wall, and a plurality of spray heads are arranged on the spray pipe (11);
the middle part of the inner cavity of the furnace body (1) is sequentially provided with a first water spraying grid plate (21), a second water spraying grid plate (22), a third water spraying grid plate (23) and a fourth water spraying grid plate (24) from top to bottom, and the diameter sizes of the first water spraying grid plate (21), the second water spraying grid plate (22), the third water spraying grid plate (23) and the fourth water spraying grid plate (24) are all consistent with the diameter size of the inner cavity of the furnace body (1);
a plurality of burner device mounting holes (1-5) are formed in the circumferential direction below the fourth water spraying grate plate (24) and in the middle lower portion of the side wall of the furnace body (1), fire spraying anti-spraying pipes (12) are arranged on the side wall of the inner cavity of the furnace body (1) at positions corresponding to the burner device mounting holes (1-5), the burner devices (6) are arranged on the outer sides of the burner device mounting holes (1-5), and fire spraying ends of the burner devices (6) extend into the fire spraying anti-spraying pipes (12) from the burner device mounting holes (1-5);
the water circulation system comprises a high-pressure circulating water pump (13), an exchanger (14), a four-way connector (15) and a plurality of connecting water pipes; the water outlet (1-2) is connected with a water inlet of a high-pressure circulating water pump (13) through a connecting water pipe, a water outlet of the high-pressure circulating water pump (13) is communicated with a circulating water inlet of an exchanger (14) through a connecting water pipe, a circulating water outlet of the exchanger (14) is communicated with an inlet of a four-way connector (15) through a connecting water pipe, and three outlets of the four-way connector (15) are respectively communicated with a spray header (10), a spray water tank (9) and a spray pipe (11) through connecting water pipes;
a plurality of furnace temperature detection probes (16) are arranged on the inner wall of the furnace body (1); the furnace temperature detection device is characterized in that the control device (7) is arranged on the upper portion of the outer side wall of the furnace body (1), a display screen is arranged on the control device (7), and the control device (7) is electrically connected with the display screen, the high-pressure circulating water pump (13), the water replenishing flow control valve (5) and the furnace temperature detection probes (16) respectively.
2. A large water-fire direct heat exchange boiler according to claim 1, characterized in that: furnace body (1) lateral wall and furnace body (1) bottom from interior to exterior include stainless steel plate inlayer (17), heat preservation (18), carbon steel sheet layer (19) and various steel sheet top layer (20) in proper order, stainless steel plate inlayer (17) thickness is 7 ~ 10mm, heat preservation (18) thickness is 5 ~ 10cm, and carbon steel sheet layer (19) thickness is 5 ~ 10mm, various steel sheet top layer (20) thickness is 2 ~ 3 mm.
3. A large water-fire direct heat exchange boiler according to claim 1, characterized in that: an outer annular channel (25) is arranged on the first water spraying grid plate (21), circular through holes (26) are formed in the middle parts of the second water spraying grid plate (22) and the fourth water spraying grid plate (24), and an inner annular channel (27) is arranged on the third water spraying grid plate (23); the outer diameter of the outer annular passage (25) is smaller than the diameter of the inner cavity of the furnace body (1), the inner diameter of the outer annular passage (25) is equal to the outer diameter of the inner annular passage (27), and the inner diameter of the inner annular passage (27) is equal to the diameter of the circular through hole (26).
4. A large water-fire direct heat exchange boiler according to claim 1, characterized in that: a water level monitor (28) is arranged in the water storage tank (4), and the water level monitor (28) is electrically connected with the control device (7).
5. A large water-fire direct heat exchange boiler according to claim 1, characterized in that: the furnace body (1) rear side lateral wall middle part is equipped with access hole (29), access hole (29) department is equipped with the access door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023345346.5U CN214199186U (en) | 2020-12-30 | 2020-12-30 | Large-scale water-fire direct heat exchange type boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023345346.5U CN214199186U (en) | 2020-12-30 | 2020-12-30 | Large-scale water-fire direct heat exchange type boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214199186U true CN214199186U (en) | 2021-09-14 |
Family
ID=77632825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023345346.5U Active CN214199186U (en) | 2020-12-30 | 2020-12-30 | Large-scale water-fire direct heat exchange type boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214199186U (en) |
-
2020
- 2020-12-30 CN CN202023345346.5U patent/CN214199186U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101307951B (en) | Water fire direct changing type highly effective multipurpose hot water units | |
| CN214199186U (en) | Large-scale water-fire direct heat exchange type boiler | |
| CN206803098U (en) | A kind of abundant combustion-type boiler of alcohol-based fuel | |
| CN112629012A (en) | Large-scale water-fire direct heat exchange type boiler | |
| CN202775817U (en) | Steam box | |
| CN105180421A (en) | Central back combustion boiler with water pipes being transversely scoured | |
| CN214199189U (en) | Novel water-fire direct heat exchange type boiler with heat exchange channel | |
| CN108759082A (en) | The semi-submersible type burner and heat supply machine of energy fully combustion gasses fuel | |
| CN201121980Y (en) | Water and fire direct heat exchange type boiler | |
| CN210425519U (en) | Novel crude oil heating furnace | |
| CN201875880U (en) | Condensation-type gas boiler | |
| CN201121986Y (en) | Circulating energy-saving atmospheric boiler | |
| CN112594925A (en) | Novel water-fire direct heat exchange type boiler with heat exchange channel | |
| CN105066434A (en) | Direct-contact type waste heat recovery constant-pressure integral boiler | |
| CN207661975U (en) | A kind of efficient hot water boiler | |
| CN201764673U (en) | High-efficient primary boiler and secondary boiler combination | |
| CN201836861U (en) | Environment-friendly energy-saving wine-making steam boiler | |
| CN205137404U (en) | Energy -efficient full -automatic gas vapor generation stove | |
| CN205939674U (en) | Extreme misery pipe boiler | |
| CN201032278Y (en) | High efficiency energy-saving heat exchanger | |
| CN212204478U (en) | Integrated biodiesel steam generator | |
| CN217685224U (en) | Gas energy-saving cooking bench | |
| CN210345862U (en) | Novel energy-saving efficient gas boiler | |
| CN218764004U (en) | Hot water module furnace with novel structure | |
| CN215864025U (en) | Waste heat recovery device and low-nitrogen energy-saving central water heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |