A circulating convection heater for large spaces

Abstract

The utility model relates to the technical field of convection type heat supplier, and disclose a kind of circulation convection type heat supplier for large space, including machine body, the circulation convection type heat supplier for large space, by the heat supply unit outside machine body cavity provides heat source, its heat supply unit output hot water to the circulation heat supply pipeline in cavity, hot water releases heat in pipeline, then, backflow to heat supply unit and form closed loop by pipeline output end, ensure that heat source continues stable supply, simultaneously, the air intake machine of machine body two sides imports cold air to cavity, cold air absorbs heat and converts into hot air when flowing through pipeline, subsequently by exhaust fan and discharged to target space, the air guide hopper of machine body bottom with electric control valve then carries out discharge to condensate, the air guide baffle outside circulation heat supply pipeline can guide cold air to contact pipeline surface uniformly, avoid air short circuit to improve heat exchange efficiency, to reach the effect of continuous stable heat supply, heat uniform distribution and operation high-efficiency energy-saving.

Description

Technical Field

[0001] This utility model relates to the field of convection heater technology, specifically a circulating convection heater for large spaces. Background Technology

[0002] Circulating convection heaters, used in large spaces (such as industrial plants, logistics warehouses, stadiums, and large supermarkets), achieve large-area, uniform heating through "air circulation + convection heat exchange." Unlike radiant or localized heaters for smaller spaces, their design emphasizes "wide coverage, high heat exchange efficiency, and controllable energy consumption." They are suitable for large spaces with high ceilings (typically 3-10m), large volumes, and rapid heat loss. Hot water is used as the heat transfer medium, and heat is transferred through natural or mechanical circulation. Natural circulation relies on the density difference between the supply and return water to create flow.

[0003] Current circulating convection heaters for large spaces are difficult to provide continuous and stable heating, resulting in uneven heat distribution and insufficient energy efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a circulating convection heater for large spaces, thereby solving the problems mentioned in the background art, such as the difficulty in providing continuous and stable heating, resulting in uneven heat distribution and insufficient energy efficiency of current circulating convection heaters for large spaces.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a circulating convection heater for large spaces, comprising a body, characterized in that: a cavity is provided inside the body, a heating unit is fixedly installed on the outer surface of the cavity, the output end of the heating unit is fixedly connected to a circulating heating pipe, the circulating heating pipe is disposed inside the cavity, a plurality of flow guide baffles are fixedly installed on the outer surface of the circulating heating pipe, an inlet fan and an exhaust fan are fixedly connected to the outer surface of the cavity, both the inlet fan and the exhaust fan are fixedly connected to the body, and the inlet fan and the exhaust fan are disposed on both sides of the body, a flow guide hopper is fixedly connected to the bottom of the body, an electrically controlled valve is disposed on the outer surface of the flow guide hopper, and the output end of the circulating heating pipe is connected to the heating unit through the body.

[0006] Preferably, both the outer surfaces of the machine body and the heating unit are fixedly equipped with support legs, the outer surfaces of the support legs are fixedly equipped with casters, the outer surfaces of the casters are provided with brake structures, the outer surface of the air intake fan is provided with a first dustproof mesh plate, the outer surface of the machine body is inserted and connected with a second dustproof mesh plate, the second dustproof mesh plate is located at the connection between the exhaust fan and the machine body, the outer surface of the exhaust fan is provided with an air guide window, and the outer surface of the machine body is provided with a monitoring unit.

[0007] Preferably, the braking structure includes a brake pad disposed on the side of the universal wheel and a foot pedal for controlling the brake pad. The foot pedal is connected to the brake pad via a connecting rod. The first dustproof mesh plate is detachably connected to the air intake fan via a slot. The second dustproof mesh plate is slidably connected to the machine body via a sliding groove. The outer surface of the second dustproof mesh plate is fixedly provided with a handle for easy pulling.

[0008] Preferably, the monitoring unit includes a temperature sensor, a humidity sensor, and a display screen; the detection ends of the temperature sensor and the humidity sensor extend into the interior of the cavity, the display screen is mounted on the outer surface of the unit, and the display screen is electrically connected to the temperature sensor and the humidity sensor.

[0009] Preferably, the guide bucket has a funnel-shaped structure, and the inner wall of the guide bucket is coated with an anti-corrosion coating. The electric control valve is an electric butterfly valve, and the electric control valve is electrically linked with the monitoring unit. The connection between the circulating heating pipe and the heating unit is provided with an insulation layer, which is made of rock wool insulation material. The circulating heating pipe is a copper spiral pipe.

[0010] Preferably, the support leg is a telescopic and height-adjustable hydraulic support leg, and the support leg is detachably connected to the body and the heating unit via a flange. The air intake fan and the exhaust fan are both variable frequency fans, and the outer surfaces of the air intake fan and the exhaust fan are covered with a sound-absorbing cotton layer.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This circulating convection heater for large spaces uses a heating unit outside the unit's cavity as a heat source. The heating unit outputs hot water to the circulating heating pipes inside the cavity. After releasing heat in the pipes, the hot water flows back to the heating unit through the pipe output end, forming a closed loop to ensure a continuous and stable heat supply. At the same time, air intake fans on both sides of the unit introduce cold air into the cavity. As the cold air flows through the pipes, it absorbs heat and is converted into hot air, which is then discharged to the target space by the exhaust fan. The guide bucket with an electrically controlled valve at the bottom of the unit discharges condensate. The guide baffle outside the circulating heating pipes guides the cold air to contact the pipe surface evenly, avoiding air short-circuiting and improving heat exchange efficiency. This achieves the effects of continuous and stable heating, uniform heat distribution, and high-efficiency and energy-saving operation.

[0012] 2. This circulating convection heater for large spaces is fixed to the outer surface of the main body and heating unit by support legs, which rigidly support the equipment to lift it off the ground, preventing the bottom from contacting the ground's damp environment or debris. At the same time, the universal wheels on the support legs reduce friction during movement due to their 360° rotation characteristics, making it easy for operators to adjust the position of the equipment. The first dustproof mesh plate outside the air intake fan uses a porous structure to intercept dust, debris and other impurities in the outside air when air is introduced, ensuring that the air entering the cavity is clean. The second dustproof mesh plate inserted outside the main body is located at the connection between the exhaust fan and the main body to prevent the backflow of external debris. The monitoring unit on the outer surface of the main body collects data through temperature and humidity sensors that extend into the cavity. This achieves the effects of flexible equipment movement and fixation, adequate bottom protection, clean cavity and components, and convenient and safe monitoring, providing multi-dimensional protection for the stable operation of the heater. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model; Figure 2 This is a front sectional view of the structure of this utility model; Figure 3 This is a top sectional view of the structure of this utility model; Figure 4 This is a side view of the structure of this utility model.

[0014] In the diagram: 1. Body; 2. Cavity; 3. Inlet fan; 4. Exhaust fan; 5. Heating unit; 6. Circulating heating pipeline; 7. Baffle plate; 8. Baffle hopper; 9. Electrically controlled valve; 10. Support leg; 11. Casters; 12. No. 1 dustproof mesh plate; 13. Monitoring unit; 14. No. 2 dustproof mesh plate; 15. Air guide window. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1: Please refer to Figures 1-4. A circulating convection heater for large spaces includes a body 1, an interior cavity 2, a heating unit 5 fixedly mounted on the outer surface of the cavity 2, an output end of the heating unit 5 fixedly connected to a circulating heating pipe 6, the circulating heating pipe 6 being located inside the cavity 2, a plurality of flow guide baffles 7 fixedly mounted on the outer surface of the circulating heating pipe 6, an intake fan 3 and an exhaust fan 4 fixedly connected to the outer surface of the cavity 2, both the intake fan 3 and the exhaust fan 4 being fixedly connected to the body 1, and the intake fan 3 and the exhaust fan 4 being located on both sides of the body 1, a flow guide hopper 8 fixedly connected to the bottom of the body 1, an electrically controlled valve 9 being provided on the outer surface of the flow guide hopper 8, and the output end of the circulating heating pipe 6 being connected to the heating unit 5 through the body 1.

[0017] Specifically, the heating unit 5 outside the cavity 2 of the unit 1 provides the heat source. The heating unit 5 outputs hot water to the circulating heating pipe 6 inside the cavity 2. After the hot water releases heat in the pipe, it flows back to the heating unit 5 through the pipe output end to form a closed loop, ensuring a continuous and stable supply of heat. At the same time, the air intake fans 3 on both sides of the unit 1 input cold air into the cavity. When the cold air flows through the pipe, it absorbs heat and is converted into hot air. Then, it is discharged to the target space by the exhaust fan 4. The guide bucket 8 with an electric control valve 9 at the bottom of the unit 1 discharges the condensate. The guide baffle 7 outside the circulating heating pipe 6 can guide the cold air to contact the pipe surface evenly, avoid air short circuits and improve heat exchange efficiency, thereby achieving the effects of continuous and stable heating, uniform heat distribution and high-efficiency and energy-saving operation.

[0018] In this embodiment: the monitoring unit 13 includes a temperature sensor, a humidity sensor and a display screen; the detection ends of the temperature sensor and the humidity sensor extend into the interior of the cavity 2, the display screen is installed on the outer surface of the body 1, and the display screen is electrically connected to the temperature sensor and the humidity sensor.

[0019] Specifically, the detection ends of the temperature and humidity sensors extend into the cavity 2, directly contacting the heat exchange air to capture temperature and humidity data in real time. Since both are electrically connected to the display screen on the outer surface of the unit 1, the sensors convert the collected analog signals into electrical signals and transmit them to the display screen. The display screen then converts the electrical signals into intuitive temperature and humidity values ​​for viewing. As a result, operators can monitor the status of the core heating area in real time without disassembling the unit 1, avoiding undetected heating abnormalities. At the same time, the data displayed on the screen can serve as a basis for precise control and also avoids contact with high-temperature components inside the cavity 2, thus improving operational convenience and ensuring safety.

[0020] In the embodiment: the guide bucket 8 has a funnel-shaped structure, and the inner wall of the guide bucket 8 is coated with an anti-corrosion coating; the electric control valve 9 is an electric butterfly valve, and the electric control valve 9 is electrically linked with the monitoring unit 13; the connection between the circulating heating pipe 6 and the heating unit 5 is provided with an insulation layer, which is made of rock wool insulation material, and the circulating heating pipe 6 is a copper spiral pipe.

[0021] Specifically, the guide bucket 8 adopts a funnel-shaped design, and the anti-corrosion coating on the inner wall isolates the humid air and condensate in the cavity 2, preventing the guide bucket 8 from rusting and extending its service life. The electric control valve 9, as an electric butterfly valve, is electrically linked with the monitoring unit 13 and can receive the temperature and humidity data of the cavity 2 transmitted by the monitoring unit 13. Through motor drive, it can precisely adjust the valve core opening to achieve automatic dynamic control of the air intake flow, adapting to the environment of the cavity 2 without manual intervention. The connection between the circulating heating pipe 6 and the heating unit 5 is equipped with a rock wool insulation layer. With the low thermal conductivity and high temperature resistance of rock wool, a heat insulation barrier is formed to reduce the heat loss of hot water in the pipe through the connection gap, ensuring the stability of the hot water circulation temperature. The circulating heating pipe 6 itself is a copper spiral pipe, which not only relies on the excellent thermal conductivity of copper to accelerate the heat transfer of hot water, but also increases the laying length and surface area in the cavity 2 through the spiral structure, expanding the contact range with cold air and extending the heat exchange time to improve heat exchange efficiency.

[0022] Working Principle: A cavity 2 is located inside the main body 1. A heating unit 5 is fixedly installed on the outer surface of the cavity 2. The output end of the heating unit 5 is fixedly connected to a circulating heating pipe 6. The circulating heating pipe 6 is located inside the cavity 2, and several guide baffles 7 are fixedly installed on its outer surface. An inlet fan 3 and an exhaust fan 4 are fixedly connected to the outer surface of the cavity 2. Both the inlet fan 3 and the exhaust fan 4 are fixedly connected to the main body 1 and are located on opposite sides of the main body 1. A guide hopper 8 is fixedly connected to the bottom of the main body 1, and an electrically controlled valve 9 is installed on the outer surface of the guide hopper 8. The output end of the circulating heating pipe 6 is connected to the heating unit 5 through the main body 1. The heating unit 5 outside the cavity 2 of the main body 1 provides the heat source, and the heating unit 5 outputs heat... Water flows into the circulating heating pipe 6 inside the cavity 2. After the hot water releases heat in the pipe, it flows back to the heating unit 5 through the pipe output end to form a closed loop, ensuring a continuous and stable supply of heat. At the same time, the air intake fans 3 on both sides of the unit 1 introduce cold air into the cavity. When the cold air flows through the pipe, it absorbs heat and is converted into hot air, which is then discharged to the target space by the exhaust fan 4. The guide bucket 8 with an electric control valve 9 at the bottom of the unit 1 discharges condensate. The guide baffle 7 outside the circulating heating pipe 6 can guide the cold air to contact the pipe surface evenly, avoiding air short circuits and improving heat exchange efficiency. Compared with related technologies, the circulating convection heater for large spaces provided by this utility model has the following beneficial effects: thus achieving continuous and stable heating, uniform heat distribution, and high-efficiency and energy-saving operation.

[0023] Example 2: Please refer to Figures 1-4. Support legs 10 are fixedly installed on the outer surfaces of both the main body 1 and the heating unit 5. Casters 11 are fixedly installed on the outer surfaces of the support legs 10. Braking structures are provided on the outer surfaces of the casters 11. A first dustproof mesh plate 12 is provided on the outer surface of the air intake fan 3. A second dustproof mesh plate 14 is inserted and connected to the outer surface of the main body 1. The second dustproof mesh plate 14 is located at the connection between the exhaust fan 4 and the main body 1. A guide window 15 is provided on the outer surface of the exhaust fan 4. A monitoring unit 13 is provided on the outer surface of the main body 1.

[0024] Specifically, the support legs 10 are fixed to the outer surfaces of the body 1 and the heating unit 5, providing rigid support to lift the equipment off the ground and prevent the bottom from contacting the damp environment or debris. At the same time, the casters 11 on the outside of the support legs 10 reduce friction during movement due to their 360° rotation characteristics, making it convenient for operators to adjust the position of the equipment. The first dustproof mesh 12 outside the air intake fan 3 uses a porous structure to intercept dust, debris and other impurities in the outside air when the air is intake, ensuring that the air entering the cavity 2 is clean. The second dustproof mesh 14 inserted outside the body 1 is located at the connection between the exhaust fan 4 and the body 1 to prevent the backflow of external debris. The monitoring unit 13 on the outer surface of the body 1 collects data through temperature and humidity sensors that extend into the cavity 2.

[0025] In this embodiment: the braking structure includes a brake pad disposed on the side of the universal wheel 11 and a foot pedal for controlling the brake pad. The foot pedal is connected to the brake pad via a connecting rod. The first dustproof mesh plate 12 is detachably connected to the air intake fan 3 via a slot. The second dustproof mesh plate 14 is slidably connected to the body 1 via a sliding groove, and a handle for easy pulling is fixedly provided on the outer surface of the second dustproof mesh plate 14.

[0026] Specifically, in the braking structure, the foot pedal is connected to the brake pad on the side of the omnidirectional wheel 11 via a linkage. When the operator presses the foot pedal, its downward mechanical action is transmitted to the brake pad through the linkage, causing the brake pad to engage with the wheel. The friction force counteracts the wheel's rotational tendency, achieving braking. Releasing the foot pedal separates the brake pad from the wheel, and the omnidirectional wheel 11 resumes rotation. This design allows the operator to brake conveniently without bending over or using tools. At the same time, the engagement braking effectively prevents accidental slippage during equipment operation, improving safety. The first dustproof mesh 12 is detachably connected to the air inlet fan 3 using a slot. During installation, the edge of the mesh is pushed into the pre-set slot. The slot and limiter are fixed, and the screen can be pulled outward to disassemble it without additional tools. The dust filter can be cleaned or replaced quickly, avoiding the reduction of air intake and heat exchange efficiency due to screen blockage, thus achieving efficient maintenance. The second dust filter 14 is slidably connected to the body 1 through a sliding groove. During installation, the screen can be pushed in along the groove to accurately cover the exhaust fan 4 interface. During disassembly, the operator can hold the handle on the outside of the screen and pull it out along the groove in the opposite direction. The groove ensures accurate installation positioning and avoids protection gaps, while the handle provides a convenient force point, reducing hand contact and pulling resistance, making disassembly and assembly easier and further ensuring the cleanliness of the cavity 2 and the exhaust fan 4.

[0027] In this embodiment: the support leg 10 is a retractable and height-adjustable hydraulic support leg 10, and the support leg 10 is detachably connected to the body 1 and the heating unit 5 through a flange. The air intake fan 3 and the exhaust fan 4 are both variable frequency fans, and the outer surfaces of the air intake fan 3 and the exhaust fan 4 are covered with a sound-absorbing cotton layer.

[0028] Specifically, the retractable hydraulic support leg 10 has a built-in hydraulic transmission structure. Injecting hydraulic oil pushes the piston rod to extend the support leg 10, raising the equipment. Releasing the pressure causes the piston rod to retract and shorten the support leg 10, achieving flexible height adjustment to adapt to different ground flatness and installation heights. At the same time, the support leg 10 is connected to the body 1 and the heating unit 5 through flanges and is firmly assembled by bolts. Unscrewing the bolts allows for separation, facilitating maintenance, replacement, disassembly, and transportation of the support leg 10. The intake fan 3 and exhaust fan 4 are variable frequency fans. The variable frequency controller adjusts the motor speed according to the temperature and humidity of the cavity 2 fed back by the monitoring unit 13. When the temperature is low, the frequency, speed, and air volume are increased to enhance heat exchange. When the temperature is high or energy saving is required, the frequency, speed, and air volume are reduced, achieving dynamic matching between air volume and heating demand. The porous fiber sound-absorbing cotton layer attached to the outer surface of the fan can convert the sound waves of the fan operation noise into heat energy and attenuate the energy through multiple reflections, significantly reducing the intensity of noise propagation. These structures work together to improve equipment installation adaptability and maintenance convenience, optimize heating efficiency and energy saving, reduce operating noise pollution, and comprehensively ensure stable equipment operation and user experience.

[0029] Working principle: The support legs 10 are fixed to the outer surfaces of the body 1 and the heating unit 5, providing rigid support to lift the equipment off the ground and prevent the bottom from contacting the damp environment or debris. Meanwhile, the casters 11 on the outside of the support legs 10 reduce friction during movement due to their 360° rotation, facilitating operator adjustment of the equipment position. Once the equipment is in place, the braking structure of the casters 11 restricts rotation through brake pads against the wheel body, thus fixing the position. The first dustproof mesh 12 outside the intake fan 3 uses a porous structure to intercept dust, debris, and other impurities from the outside air during intake, ensuring clean air entering the cavity 2. The second dustproof mesh 14, inserted outside the body 1, is located at the connection between the exhaust fan 4 and the body 1, and intercepts dust and debris during exhaust. The dust generated during heat exchange within the cavity 2 and impurities falling from the pipes are prevented from clogging the exhaust fan 4 or spreading outwards, while also preventing backflow of external debris. The insertion structure facilitates cleaning. The monitoring unit 13 on the outer surface of the body 1 collects data through temperature and humidity sensors extending into the cavity 2, and transmits the signals to the display screen via electrical connection, allowing operators to intuitively view the temperature and humidity without disassembling the equipment. Compared with related technologies, the circulating convection heater for large spaces provided by this utility model has the following beneficial effects: it achieves the effects of flexible equipment movement and fixation, adequate bottom protection, clean cavity 2 and components, and convenient and safe monitoring, providing multi-dimensional protection for the stable operation of the heater.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circulating convection heater for large spaces, comprising a body (1), characterized in that: The body (1) has a cavity (2) inside. A heating unit (5) is fixedly installed on the outer surface of the cavity (2). The output end of the heating unit (5) is fixedly connected to the circulating heating pipe (6). The circulating heating pipe (6) is located inside the cavity (2). Several flow guide baffles (7) are fixedly installed on the outer surface of the circulating heating pipe (6). An air inlet fan (3) and an exhaust fan (4) are fixedly connected on the outer surface of the cavity (2). The air inlet fan (3) and the exhaust fan (4) are both fixedly connected to the body (1). The air inlet fan (3) and the exhaust fan (4) are located on both sides of the body (1). A flow guide bucket (8) is fixedly connected to the bottom of the body (1). An electric control valve (9) is installed on the outer surface of the flow guide bucket (8). The output end of the circulating heating pipe (6) is connected to the heating unit (5) through the body (1).

2. A circulating convection heater for large spaces according to claim 1, characterized in that: Support legs (10) are fixedly installed on the outer surfaces of the body (1) and the heating unit (5). Universal wheels (11) are fixedly installed on the outer surfaces of the support legs (10). Braking structures are provided on the outer surfaces of the universal wheels (11). A first dustproof mesh plate (12) is provided on the outer surface of the air intake fan (3). A second dustproof mesh plate (14) is inserted and connected on the outer surface of the body (1). The second dustproof mesh plate (14) is located at the connection between the exhaust fan (4) and the body (1). A wind guide window (15) is provided on the outer surface of the exhaust fan (4). A monitoring unit (13) is provided on the outer surface of the body (1).

3. A circulating convection heater for large spaces according to claim 2, characterized in that: The braking structure includes a brake pad disposed on the side of the universal wheel (11) and a foot pedal for controlling the brake pad. The foot pedal is connected to the brake pad via a connecting rod. The first dustproof mesh plate (12) is detachably connected to the air intake fan (3) via a slot. The second dustproof mesh plate (14) is slidably connected to the machine body (1) via a sliding groove. The outer surface of the second dustproof mesh plate (14) is fixedly provided with a handle for easy pulling.

4. A circulating convection heater for large spaces according to claim 2, characterized in that: The monitoring unit (13) includes a temperature sensor, a humidity sensor and a display screen; the detection ends of the temperature sensor and the humidity sensor extend into the interior of the cavity (2), the display screen is installed on the outer surface of the body (1), and the display screen is electrically connected to the temperature sensor and the humidity sensor.

5. A circulating convection heater for large spaces according to claim 2, characterized in that: The guide bucket (8) has a funnel-shaped structure, and the inner wall of the guide bucket (8) is coated with an anti-corrosion coating. The electric control valve (9) is an electric butterfly valve, and the electric control valve (9) is electrically linked with the monitoring unit (13). The connection between the circulating heating pipe (6) and the heating unit (5) is provided with an insulation layer, which is made of rock wool insulation material. The circulating heating pipe (6) is a copper spiral pipe.

6. A circulating convection heater for large spaces according to claim 2, characterized in that: The support leg (10) is a retractable and height-adjustable hydraulic support leg (10), and the support leg (10) is detachably connected to the body (1) and the heating unit (5) through a flange. The air intake fan (3) and the exhaust fan (4) are both variable frequency fans, and the outer surfaces of the air intake fan (3) and the exhaust fan (4) are covered with a sound-absorbing cotton layer.

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