Anti-freezing system for boiler room
By designing an anti-freeze system for air supply fans, exhaust ducts, heat exchanger and air valves in the boiler room, the cold air inflow problem caused by the temperature difference between the upper and lower parts of the boiler room in severe cold areas is solved, the anti-freeze effect of the equipment is achieved, and energy consumption and management costs are reduced.
Patent Information
- Application Number
- CN202411946654.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-03-18
AI Technical Summary
Due to the large temperature difference between the upper and lower parts of the boiler room in severe cold areas, external cold air flows into the lower part of the boiler room, and the equipment is prone to freezing and frost, which affects use. The existing solution is to increase heating equipment, consume a lot of energy and increase management costs.
A boiler room antifreeze system is designed, including air supply fan, exhaust duct, heat exchanger and air valve. By introducing outdoor cold air and using heat exchanger on the exhaust duct to heat the air, a top-down air flow cycle is formed to ensure the warm environment in the lower part of the boiler room.
Effectively prevent the equipment in the lower part of the boiler room from freezing and frosting, ensure the normal operation of the equipment, while reducing energy consumption and reducing management costs.
Smart Images
Figure CN119642314A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of boiler room antifreeze equipment, in particular to a boiler room antifreeze system. Background Art
[0002] The boiler room in extremely cold areas is a typical ultra-high, large-space, and large-heat-source building. The outdoor temperature in some areas is -30℃ or even -50℃ in winter. Due to the high overall height of the boiler room, after closing all ventilation equipment, the hot air inside the boiler room will automatically flow upward due to its low density, and the temperature in the upper part of the boiler room can reach up to about 50℃-60℃, which leads to a large thermal pressure difference between the upper and lower parts of the boiler room. The high-temperature air in the upper part of the boiler room continuously escapes from the gaps in the boiler room building, and after the air in the upper part of the boiler room overflows, the lower part of the boiler room is under negative pressure. There is a continuous influx of cold air from the outside in the lower part of the boiler room, which will cause many equipment to freeze and frost, affecting the use of the equipment. In order to avoid damage to the equipment in the lower part of the boiler room, the current method of adding heating equipment at the bottom of the boiler room is to heat the cold air flowing in from the outside, so that the ambient temperature at the bottom of the boiler room is maintained above 0℃, which not only consumes a lot of electricity or coal, but also requires the allocation of relevant personnel for management, and the economic cost is high. Summary of the invention
[0003] To this end, the technical problem to be solved by the present invention is to overcome the situation in the prior art that boiler rooms in severely cold areas are prone to high temperatures in the upper part of the boiler room and low temperatures in the lower part in winter. A thermal pressure difference occurs between the upper and lower parts of the boiler room, causing external cold air to flow into the lower part of the boiler room, resulting in ice and frost on the equipment, which affects the use of the equipment. In order to avoid damage to the equipment in the lower part of the boiler room, the current method of adding heating equipment at the bottom of the boiler room is to heat the cold air flowing in from the outside, so that the ambient temperature at the bottom of the boiler room is maintained above 0°C. This not only consumes a large amount of electricity or coal, but also requires the allocation of relevant personnel for management, resulting in high economic costs.
[0004] In order to solve the above technical problems, the present invention provides a boiler room antifreeze system for preventing equipment located at the bottom of the boiler room from freezing, comprising: Air supply fans, wherein the air supply fans are provided in multiple groups, and the multiple groups of air supply fans are respectively vertically arranged in the air supply ports opened on the top of the boiler room; An exhaust pipe, wherein a plurality of the exhaust pipes are provided, and the plurality of the exhaust pipes are respectively vertically connected to the side walls in the boiler room, one end of the exhaust pipe is close to the bottom of the boiler room, and the other end passes through the top of the boiler room and is connected to the outside; A heat exchange plate, wherein a plurality of heat exchange plates are provided, and the plurality of heat exchange plates are respectively connected to the side surfaces of the exhaust pipes and close to the top of the boiler room.
[0005] In one embodiment of the present invention, it further includes a first air valve. A plurality of air inlets close to the top of the boiler room are provided on the side of the boiler room. A plurality of first air valves are provided and are respectively installed on each of the air inlets.
[0006] In one embodiment of the present invention, it also includes a regulating fan, and the regulating fan is provided in multiple groups, and the multiple groups of regulating fans are respectively vertically arranged in the middle of the boiler room.
[0007] In one embodiment of the present invention, the regulating fan is connected to an air duct extending to the outdoors.
[0008] In one embodiment of the present invention, a first temperature sensor and a second temperature sensor are provided on the side of the boiler room, close to the top and the bottom thereof respectively. The first temperature sensor and the second temperature sensor are connected to a controller, and the controller is respectively connected to the first air valve, the air supply fan and the regulating fan.
[0009] In one embodiment of the present invention, the heat exchange plate comprises an arc-shaped base plate, which is connected to a side of each exhaust pipe away from the boiler room side wall via fasteners, and a plurality of fins arranged in an array are vertically connected to the base plate.
[0010] In one embodiment of the present invention, a first insulation layer is provided on the section of the exhaust duct extending out of the boiler room.
[0011] In one embodiment of the present invention, a second insulation layer is provided on one side of each exhaust pipe close to the side wall of the boiler room.
[0012] In one embodiment of the present invention, the diameter of each exhaust pipe gradually decreases from an end close to the bottom of the boiler room to an end close to the top of the boiler room.
[0013] In one embodiment of the present invention, a rain cover is provided on the top of each exhaust pipe.
[0014] The above technical solution of the present invention has the following advantages compared with the prior art: A boiler room antifreeze system of the present invention comprises an air supply fan, an exhaust pipe, a heat exchanger and a first air valve; the air supply fan is provided in multiple groups and is respectively located on the top of the boiler room; the exhaust pipe is provided in multiple groups and is respectively connected to the inner wall of the boiler room, one end of the exhaust pipe is close to the bottom of the boiler room, and the other end passes through the top of the boiler room and is connected to the outside; a plurality of heat exchangers are provided and are respectively connected to the side of each exhaust pipe close to one end of the top of the boiler room; a boiler room antifreeze system of the present invention introduces outdoor cold air by providing an air supply fan, so that the hot air gathered in the upper part of the boiler room has a tendency to move from top to bottom, and by providing multiple groups of exhaust pipes and utilizing the heat exchangers provided on the exhaust pipes to utilize the heat of the hot air in the upper part of the boiler room, the air in the exhaust pipe flows from bottom to top, so that the air inside the boiler room can be sucked, and finally a top-to-bottom air flow cycle is formed inside the boiler room, so that the high-temperature air originally located above the boiler room can heat the environment of the lower part of the boiler room, ensuring the normal operation of the equipment, and also providing a comfortable working environment for the staff. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings, wherein Figure 1 It is a schematic diagram of the overall structure of the boiler room antifreeze system of the preferred embodiment of the present invention (the first structural form); Figure 2 It is a schematic diagram of the overall structure of the boiler room antifreeze system of the preferred embodiment of the present invention (the second structural form).
[0016] Explanation of the reference numerals in the drawings in the specification: 1. air supply fan; 2. exhaust duct; 21. inlet; 3. heat exchanger; 4. first air valve; 5. regulating fan; A. boiler room; B. boiler. DETAILED DESCRIPTION
[0017] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention. Embodiment 1
[0018] Reference Figure 1 As shown, a boiler room antifreeze system of the present invention is used to prevent the equipment located at the lower part of the boiler room from freezing, comprising: Air supply fan 1, the air supply fan 1 is provided with multiple groups, and the multiple groups of air supply fans 1 are respectively vertically arranged in the air supply openings opened at the top of the boiler room A; Exhaust pipes 2, multiple exhaust pipes 2 are provided, and the multiple exhaust pipes 2 are respectively vertically connected to the side walls in the boiler room A, one end of the exhaust pipe 2 is close to the bottom of the boiler room, and the other end passes through the top of the boiler room and is connected to the outside; The heat exchanger fins 3 are provided in plurality, and the plurality of heat exchanger fins 3 are respectively connected to the side surfaces of the exhaust pipes 2 and close to the top of the boiler room.
[0019] Specifically, a plurality of exhaust pipes 2 are evenly installed on the side walls inside the boiler room, one end of each exhaust pipe 2 is arranged close to the ground of the boiler room, and the other end extends vertically upward and passes through the roof of the boiler room to communicate with the outside. When the temperature difference between the upper and lower parts of the boiler room is large (that is, the temperature above the boiler room is high), the air supply fan 1 located on the top of the boiler room starts to introduce outdoor cold air into the boiler room. After the outdoor cold air is mixed with the hot air in the upper part of the boiler room, the temperature of the mixed air decreases and the density increases, so it gradually moves to the lower part of the boiler room; and in the process of the mixed air gradually moving downward, due to the heat exchange plate 3 on the exhaust pipe 2 (the heat exchange plate 3 absorbs the heat from the upper part of the boiler room to heat the upper part of the exhaust pipe 2), the temperature of the upper part of the exhaust pipe 2 increases, which accelerates the upward discharge of the air in the upper part of the exhaust pipe 2, thereby accelerating the chimney effect of the air flowing from bottom to top in the exhaust pipe 2. In this way, the lower part of each exhaust pipe 2 will suck the air in the lower part of the boiler room, and will accelerate the downward movement speed of the mixed air above the boiler room, and finally form an air flow cycle from top to bottom in the boiler room, and use the high-temperature air originally located above the boiler room to heat the environment in the lower part of the boiler room, so as to avoid icing and frost on the equipment in the boiler room and ensure the normal operation of the system.
[0020] Furthermore, a boiler room antifreeze system further includes a first air valve 4. A plurality of air inlets near the top of the boiler room are provided on the side of the boiler room, and a plurality of first air valves 4 are provided and respectively installed on each air inlet. When the temperature of the high-temperature air in the upper part of the boiler room is reduced to a certain extent, the air supply fan 1 can be turned off and the first air valve 4 can be turned on. By using the suction of the lower end of the exhaust pipe 2 at the lower part of the boiler room, the outside air can enter the boiler room from the first air valve 4, and the cold air entering from the outside further reduces the temperature of the air in the upper part of the boiler room, so that the air in the upper part of the boiler room moves downward, thereby realizing the movement of the air inside the boiler room from top to bottom and being discharged from the exhaust pipe 2, which can reduce energy loss and reduce costs.
[0021] Furthermore, it also includes a regulating fan 5, and there are multiple groups of regulating fans 5, and the multiple groups of regulating fans 5 are respectively vertically arranged in the middle of the boiler room. Specifically, when the internal thermal pressure difference between the upper and lower parts of the boiler room is large, the regulating fan 5 can be turned on to accelerate the introduction speed of outdoor cold air, thereby accelerating the circulation of air in the boiler room, quickly reducing the internal thermal pressure difference between the upper and lower parts of the boiler room, and ensuring the normal operation of the equipment. Specifically, the regulating fan 5 can assist the air supply fan 1 to introduce outdoor cold air from the air supply port on the top of the boiler room; it can also directly introduce cold air from the outside through an air duct extending to the outside, and can be set according to actual needs.
[0022] Furthermore, a first temperature sensor and a second temperature sensor are provided on the side of the boiler room, which are close to the top and the bottom thereof, respectively. The first temperature sensor and the second temperature sensor are connected to a controller, which is connected to the first air valve 4, the air supply fan 1 and the regulating fan 5, respectively. Specifically, the opening and closing of each component can be manually controlled by the controller; at the same time, the automatic opening and closing of each component can be realized by the controller. For example, when the first temperature sensor senses that the temperature of the upper part of the boiler room exceeds a predetermined temperature value or the second temperature sensor senses that the temperature of the lower part of the boiler room is lower than a predetermined temperature value, the controller controls the air supply fan 1, the regulating fan 5 and the first air valve 4 to open automatically; and when the first temperature sensor senses that the temperature of the upper part of the boiler room drops to a predetermined temperature value or the second temperature sensor senses that the temperature of the lower part of the boiler room rises to a predetermined temperature value, the controller controls the air supply fan 1 and the regulating fan 5 to close, and the air inside the boiler room can be circulated from top to bottom only by the cold air naturally entering through the first air valve 4 and the suction effect of each exhaust pipe 2, which can reduce energy consumption. The automatic control of the controller can avoid ice and frost on the equipment in the boiler room before manual intervention, ensuring the stable operation of the equipment. It is conceivable that the automatic opening and closing conditions of each component can be set according to actual needs to meet different needs at different times and seasons.
[0023] Furthermore, the heat exchanger 3 includes an arc-shaped base plate, which is connected to a side of each exhaust pipe 2 away from the side wall of the boiler room through fasteners, and a plurality of fins arranged in an array are vertically connected to the base plate.
[0024] Furthermore, to ensure that the exhaust duct 2 has an effective temperature difference, a first insulation layer may be added to the section of the exhaust duct 2 extending out of the boiler room to prevent the external low temperature from lowering the temperature of the upper end of the exhaust duct 2 .
[0025] Furthermore, a second insulation layer is provided on the side of each exhaust pipe 2 close to the boiler room side wall. Specifically, in order to ensure that the exhaust pipe 2 makes better use of the temperature difference, an insulation layer is provided on the side of the exhaust pipe 2 close to the boiler room side wall so that the low temperature of the boiler room side wall will not affect the temperature inside the exhaust pipe 2; and no insulation layer is provided on the side of the exhaust pipe 2 close to the boiler B so that the exhaust pipe 2 can be normally heated by the high temperature air above the boiler room.
[0026] Furthermore, the diameter of each exhaust pipe 2 gradually decreases from one end close to the bottom of the boiler room to one end close to the top of the boiler room. It is conceivable that the design of the exhaust pipe 2 being thicker at the bottom and thinner at the top can keep the air flow rate unchanged or slightly increase it, thereby preventing the outdoor cold air from flowing back into the exhaust pipe 2.
[0027] Further, a rain cover is provided on the top of each exhaust pipe 2 to prevent rainwater from entering the boiler room from the exhaust pipe 2. More preferably, the input port 21 of the exhaust pipe 2 is located on the side of the exhaust pipe, which is conducive to the rapid flow of air in the boiler room.
[0028] A boiler room antifreeze system of the present invention is provided with an air supply fan 1 to make the hot air gathered in the upper part of the boiler room move from top to bottom, and by providing multiple sets of exhaust pipes 2 and utilizing the heat exchanger plates 3 provided on the exhaust pipes 2 to utilize the heat of the hot air in the upper part of the boiler room, so that the air in the exhaust pipes 2 flows from bottom to top, thereby sucking the air inside the boiler room, and finally forming an air flow circulation from top to bottom inside the boiler room, so that the high-temperature air originally above the boiler room can heat the environment of the lower part of the boiler room, thereby ensuring the normal operation of the equipment and providing a comfortable working environment for the staff. Embodiment 2
[0029] Reference Figure 2 As shown, on the basis of the first embodiment, the structure of the boiler room antifreeze system can be simplified. The simplified boiler room antifreeze system removes the air supply fan 1 and the regulating fan 5, and only sets the first air valve 4, the exhaust pipe 2 and the heat exchange plate 3 and other structures. The chimney effect of the exhaust pipe 2 is used to suck the air in the lower part of the boiler room, and the outdoor air enters the boiler room through the first air valve 4. The outdoor cold air reduces the air temperature in the upper part of the boiler room, so that the air in the upper part of the boiler room moves downward, thereby realizing the movement of the air inside the boiler room from top to bottom.
[0030] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.
Claims
1. A boiler room antifreeze system, used to prevent equipment located in the lower part of the boiler room from freezing, characterized in that: include, Air supply fans, wherein the air supply fans are provided in multiple groups, and the multiple groups of air supply fans are respectively vertically arranged in the air supply ports opened on the top of the boiler room; An exhaust pipe, wherein a plurality of the exhaust pipes are provided, and the plurality of the exhaust pipes are respectively vertically connected to the side walls in the boiler room, one end of the exhaust pipe is close to the bottom of the boiler room, and the other end passes through the top of the boiler room and is connected to the outside; A heat exchange plate, wherein a plurality of heat exchange plates are provided, and the plurality of heat exchange plates are respectively connected to the side surfaces of the exhaust pipes and close to the top of the boiler room.
2. The boiler room antifreeze system according to claim 1 is characterized in that: It also includes a first air valve. A plurality of air inlets close to the top of the boiler room are provided on the side of the boiler room. A plurality of the first air valves are provided and are respectively installed on each of the air inlets.
3. The boiler room antifreeze system according to claim 2 is characterized in that: It also includes a regulating fan, and the regulating fan is provided in multiple groups, and the multiple groups of regulating fans are respectively vertically arranged in the middle position of the boiler room.
4. The boiler room antifreeze system according to claim 3 is characterized in that: The regulating fan is connected to an air duct extending to the outdoors.
5. The boiler room antifreeze system according to claim 3 is characterized in that: A first temperature sensor and a second temperature sensor are arranged on the side of the boiler room, close to the top and bottom thereof respectively. The first temperature sensor and the second temperature sensor are connected to a controller, and the controller is respectively connected to the first air valve, the air supply fan and the regulating fan.
6. The boiler room antifreeze system according to claim 1, characterized in that: The heat exchange plate comprises an arc-shaped base plate, which is connected to a side of each exhaust pipe away from the side wall of the boiler room through fasteners, and a plurality of fins arranged in an array are vertically connected to the base plate.
7. The boiler room antifreeze system according to claim 1, characterized in that: A first insulation layer is arranged on the section of the exhaust pipe extending out of the boiler room.
8. The boiler room antifreeze system according to claim 1, characterized in that: A second insulation layer is provided on one side of each exhaust pipe close to the side wall of the boiler room.
9. The boiler room antifreeze system according to claim 1, characterized in that: The diameter of each exhaust pipe gradually decreases from one end close to the bottom of the boiler room to one end close to the top of the boiler room.
10. The boiler room antifreeze system according to claim 1, characterized in that: A rain cover is arranged on the top of each exhaust pipe.