Warm air blower capable of discharging air from middle line

Abstract

The utility model relates to the technical field of warm air blowers, in particular to a warm air blower with midline air outlet, which comprises a shell and a fan, an air inlet is arranged on the front side of the shell corresponding to the fan, a partition plate is arranged in the middle of the shell to form a long-strip-shaped hot air cavity, and gaps are reserved between two sides of the hot air cavity and the side wall of the shell to form ventilation channels. An air outlet is formed in the front face of the shell within the range of the hot air cavity, a PTC heating body is arranged on the shell at the position of the air outlet, a valve is arranged on the partition plate at the position of the opening structure of the hot air cavity, and an air guide plate is arranged in the hot air cavity. According to the warm air blower with the midline air outlet, the air outlet is formed in the middle of the front face of the shell, airflow is fed into the hot air cavity or the air exchange channel through the centrifugal fan and the volute, warm air outlet and air exchange are achieved, meanwhile, due to the design of the air guide plate in the hot air cavity, the air outlet amount of all parts of the air outlet is kept stable, and the air exchange efficiency is improved. The air inlet and the air outlet are both located in the front face of the shell, indoor air is adopted, and cleanness and stability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of warm air blowers, in particular to a warm air blower with a middle-line air outlet. Background Art

[0002] For warm air blowers, their technology is mature. However, in general warm air blowers, the air outlets are arranged on the sides of the warm air blowers, so the utilization rate and position of the hot air are relatively poor.

[0003] At present, there are warm air blowers on the market with air outlets in the middle position, such as the Chinese utility model patent: 202022844649.5, a duct type turbine air heating and ventilating machine, including a tubular chassis, a PTC heating group, a turbine fan, a control main board and a conversion baffle assembly; the tubular chassis is provided with an air inlet, an air outlet and a warm air outlet, the turbine fan is installed near the air inlet of the tubular chassis, the PTC heating group is arranged at the warm air outlet, the control main board is arranged in the tubular chassis, and the PTC heating group, the turbine fan and the stepping motor are controlled and connected to the control main board; the conversion baffle assembly is arranged on the air outlet and has an arc-shaped air guiding surface, and the arc-shaped air guiding surface can reduce the air resistance.

[0004] However, it closes the air outlet through the conversion baffle assembly, and the air flow rebounds and is output from the warm air outlet, and uses air pressure to press the warm air outwards, which will cause uneven air flow velocity at both ends of the warm air outlet and relatively poor service performance.

[0005] Therefore, there is an urgent need for a warm air blower with the warm air outlet arranged in the middle part of the housing and capable of ensuring uniform and stable air outlet of the warm air. Summary of the Utility Model

[0006] The utility model provides a warm air blower with a middle-line air outlet to solve the above technical deficiencies, realizing that the air outlet is located at the middle-line position on the front surface of the housing and the air outlet is uniform and stable.

[0007] The utility model discloses a warm air blower with a central air outlet, which comprises a housing and a blower. The blower is a centrifugal blower. A volute is arranged at one end inside the housing. The end of the volute is connected to the side wall of the housing to form an air flow channel. The blower is arranged inside the volute. An air inlet is arranged on the front surface of the housing corresponding to the blower. A partition is arranged at the middle part of the housing to form a long strip-shaped hot air cavity. One end of the hot air cavity close to the blower is an open structure, and the other end is a closed structure. There are gaps between the two sides of the hot air cavity and the side wall of the housing to form a ventilation channel. The ventilation channel is connected to the air flow channel. A ventilation port is arranged at the end of the housing far from the blower. The ventilation channel is communicated with the ventilation port. An air outlet is arranged on the front surface of the housing within the range of the hot air cavity. A PTC heating element is arranged on the housing at the air outlet. A valve is arranged on the partition at the open structure of the hot air cavity. The valve is controlled by a motor to open and close. The valve is used to control the opening or closing of the hot air cavity and the heat exchange channel. A wind guide plate is arranged inside the hot air cavity. One end of the wind guide plate close to the blower is attached to the bottom wall of the housing. The edge of the wind guide plate is attached to the side wall of the hot air cavity. The distance between the wind guide plate and the air outlet gradually decreases from the blower end to the ventilation port end.

[0008] The valve structure is as follows: Rotating shafts are arranged on the partitions on both sides at the open structure of the hot air cavity. Baffles are arranged on the rotating shafts. An arc-shaped plate is arranged at the lower end of the rotating shaft. Gears that cooperate with each other are arranged outside the two arc-shaped plates. A motor is arranged at the end of one of the rotating shafts. When the two baffles are closed, the hot air cavity is closed and the ventilation channel is opened. When the two baffles are opened until they contact the side wall of the housing, the hot air cavity is opened and the ventilation channel is closed.

[0009] The widths of the ventilation channels on both sides of the hot air cavity are the same.

[0010] The warm air blower with a central air outlet obtained by the utility model arranges the air outlet at the middle part of the front surface of the housing, and uses a centrifugal blower and a volute to send air flow into the hot air cavity or the ventilation channel, realizing warm air outlet and ventilation. At the same time, the design of the wind guide plate in the hot air cavity keeps the air volume at each part of the air outlet stable. Since both the air inlet and the air outlet are located on the front surface of the housing and both use indoor air, it is clean and stable. Description of the Drawings

[0011] Figure 1 is the front view of the utility model;

[0012] Figure 2 is Figure 1 the cross-sectional view of;

[0013] Figure 3 is the three-dimensional view of the utility model;

[0014] Figure 4 is the schematic diagram of the internal structure of the housing of the utility model. Detailed implementation mode

[0015] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following will combine the attached drawings and preferred embodiments to detail the specific implementation mode, structure, features and their effects of the present utility model as follows.

[0016] Embodiment 1:

[0017] As Figures 1 - 4 shown, the present utility model discloses a warm air blower with a central air outlet, including a housing 1 and a blower. The blower is a centrifugal blower 2. At one end inside the housing 1, a volute 7 is provided. The end of the volute 7 is connected to the side wall of the housing 1 to form an air flow channel. The blower is arranged inside the volute 7. An air inlet 4 is provided on the front surface of the housing 1 corresponding to the blower. A partition 10 is provided in the middle part of the housing 1 to form a long strip-shaped hot air cavity 11. The hot air cavity 11 is an open structure at one end close to the blower and a closed structure at the other end. There are gaps between both sides of the hot air cavity 11 and the side wall of the housing 1 to form a ventilation channel 12. The ventilation channel 12 is connected to the air flow channel. A ventilation port 6 is provided at the end of the housing 1 far from the blower. The ventilation channel 12 is communicated with the ventilation port 6. An air outlet 5 is provided on the front surface of the housing 1 within the range of the hot air cavity 11. A PTC heating element 3 is provided on the housing 1 at the air outlet 5. A valve 8 is provided on the partition 10 at the open structure of the hot air cavity 11. The valve 8 is controlled to open and close by a motor 84. The valve 8 is used to control the opening or closing of the hot air cavity 11 and the heat exchange channel; A wind guide plate 9 is provided inside the hot air cavity 11. The wind guide plate 9 at one end close to the blower is attached to the bottom wall of the housing 1. The edge of the wind guide plate 9 is attached to the side wall of the hot air cavity 11. The distance between the wind guide plate 9 and the air outlet 5 gradually decreases from the blower end to the ventilation port 6 end.

[0018] A volute 7 and a centrifugal blower 2 are provided at one end inside the housing 1, and the space they occupy is relatively small, so that the length of the air outlet 5 is relatively long. The setting of the centrifugal blower 2 can make both the air inlet 4 and the air outlet 5 located on the front surface of the housing 1. In this way, when heating and blowing warm air or ventilating, indoor air can be used as the incoming air, without the need to use interlayer air, so it is cleaner, has a large air intake, and better ventilation effect. At the same time, the air conveyed by the centrifugal blower 2 enters the hot air cavity 11 or the ventilation channel 12 under the control of the valve 8. Only one blower can realize the functions of ventilation and supplying hot air, reducing costs and also reducing the overall size. When the air conveyed by the centrifugal blower 2 enters the hot air cavity 11 through the volute 7, due to the setting of the wind guide plate 9 inside the hot air cavity 11, the air flow output from each part of the air outlet 5 can be basically kept consistent to achieve stable air outlet. Since the power of the PTC heating elements 3 at each part of the air outlet 5 is the same, the temperature of the hot air output can be ensured to be basically stable, greatly improving the use performance.

[0019] The structure of the valve 8 is as follows: Rotating shafts 81 are arranged on the partition plates 10 on both sides of the opening structure of the hot air chamber 11. A baffle 82 is arranged on the rotating shaft 81. An arc-shaped plate 83 is arranged at the lower end of the rotating shaft 81. Gears that cooperate with each other are arranged on the outer sides of the two arc-shaped plates 83. A motor 84 is arranged at the end of one of the rotating shafts 81. When the two baffles 82 are closed, the hot air chamber 11 is closed and the ventilation channel 12 is opened. When the two baffles 82 are opened until they contact the side wall of the housing 1, the hot air chamber 11 is opened and the ventilation channel 12 is closed. The rotating shaft 81 is arranged at the end of the partition plate 10, and the baffle 82 is fixed on the rotating shaft 81. When the two baffles 82 are closed together, the opening structure of the hot air chamber 11 can be closed, so that the ventilation channel 12 is in an open state. When the two baffles 82 are unfolded and contact the side wall of the housing 1, the ventilation channels 12 on both sides of the hot air chamber 11 can be closed, and the air flow can only flow through the hot air chamber 11, realizing the output of hot air. The arc-shaped plate 83 is arranged at the lower end of the rotating shaft 81. The two arc-shaped plates 83 are provided with cooperating teeth, and one of the rotating shafts 81 is driven to rotate by the motor 84. Through the cooperation of the teeth on the arc-shaped plate 83, the two rotating shafts 81 move in opposite directions, so as to realize the synchronous opening or closing of the baffles 82. Only one motor 84 is needed, and the structure is simple and the cost is low.

[0020] The widths of the ventilation channels 12 on both sides of the hot air chamber 11 are the same. By making the widths of the ventilation channels 12 on both sides the same, when the baffle 82 of the valve 8 is unfolded, the ventilation channels 12 can be closed simultaneously, with good synchronism and the ventilation channels 12 on both sides are closed more tightly.

[0021] The side wall of the housing 1 at the ventilation channel 12 can be double-layered. The ventilation channel 12 is located between the partition plate 10 and the inner side wall of the housing 1, and it can be set according to actual needs.

[0022] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0023] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0024] In the present application, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0025] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present utility model. However, as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A central line air heater, comprising a housing and a fan, characterized in that: The fan is a centrifugal fan, a volute is provided at one end inside the shell, the end of the volute is connected to the side wall of the shell to form an air flow channel, the fan is arranged in the volute, an air inlet is provided on the front side of the shell corresponding to the fan, a partition is provided in the middle part of the shell to form a long hot air chamber, the hot air chamber is an open structure close to one end of the fan, and the other end of the hot air chamber is a closed structure, a gap exists between the two sides of the hot air chamber and the side wall of the shell to form a ventilation channel, the ventilation channel is connected to the air flow channel, and a ventilation port is provided at the end of the shell away from the fan end, and the ventilation port is provided. The air channel is connected with the ventilation port, an air outlet is arranged on the front side of the shell within the range of the hot air chamber, a PTC heater is arranged on the shell at the air outlet, a valve is arranged on the partition at the opening structure of the hot air chamber, the opening and closing of the valve is controlled by a motor, and the valve is used to control the opening or closing of the hot air chamber and the heat exchange channel; an air guide plate is arranged inside the hot air chamber, the air guide plate close to one end of the fan is in contact with the bottom wall of the shell, the edge of the air guide plate is in contact with the side wall of the hot air chamber, and the distance between the air guide plate and the air outlet gradually decreases from one end of the fan to one end of the ventilation port.

2. The central air outlet heater according to claim 1, characterized in that: The valve structure is as follows: a rotating shaft is arranged on the partitions on both sides of the hot air chamber opening structure, a baffle is arranged on the rotating shaft, an arc plate is arranged at the lower end of the rotating shaft, teeth that cooperate with each other are arranged on the outer sides of the two arc plates, and a motor is arranged at the end of one of the rotating shafts; when the two baffles are closed, the hot air chamber is closed and the ventilation channel is opened, and when the two baffles are opened to contact the side walls of the shell, the hot air chamber is opened and the ventilation channel is closed.

3. The central air outlet heater according to claim 2 is characterized in that: The widths of the ventilation channels on both sides of the hot air chamber are consistent.

Images