Bladeless fan heater
By employing a ring-shaped air guide assembly and a centrifugal fan in the bladeless warm air blower, combined with a PTC heating element and an oscillating drive device, the problem of uneven air temperature at the outlet is solved, achieving uniform output and stable, smooth warm air.
Patent Information
- Application Number
- CN202520205822.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-02-10
AI Technical Summary
Traditional bladeless heaters produce uneven airflow, causing discomfort to users.
Design a bladeless warm air blower that uses a ring-shaped air guide assembly and a centrifugal fan. The air outlet is divided into three parts: an outer ring, a middle ring, and an inner ring. Combined with a PTC heating element and an oscillating drive device, it can achieve multiple mixing and stable output of warm air.
It achieves even output of warm air, improving the user's comfort, and the wind force is stable and the direction is more even and smooth.
Smart Images
Figure CN223782921U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an improvement of a bladeless warm air blower, particularly an improvement of the air outlet. Background Technology
[0002] Traditional bladed fan heaters suffer from problems such as noise from rotating blades, safety hazards (e.g., the risk of children's fingers getting caught), limited heating range, and uneven air circulation. This prompted researchers to explore new heating technologies, leading to the development of bladeless fan heaters. They overcome the structural limitations of traditional bladed fans, providing users with a safer and more comfortable heating option.
[0003] The concept of bladeless heaters originated from air multiplication technology, with research focusing on how to generate warm air through efficient air acceleration and multiplication mechanisms. Engineers have tried various duct designs and airflow pressurization technologies to achieve stable and powerful warm air output, but improvements are still needed in energy consumption and the uniformity of warm air.
[0004] Because the air blower emits warm air, when using bladeless technology, the air in the center of the bladeless airflow will be cold due to the multiplication technology, resulting in uneven airflow throughout the airflow. This can cause discomfort to users when they are close to the air blower. Utility Model Content
[0005] In order to overcome the shortcomings of uneven airflow in current bladeless heaters, this utility model provides a bladeless heater with uniform airflow.
[0006] The technical solution of this utility model to solve its technical problem is: a bladeless warm air blower, comprising a main body, the main body having an outer shell and a wind chamber shell, the upper end of the outer shell being an air outlet, an auxiliary air duct being provided in the middle of the air outlet, the lower rear part of the outer shell being an air inlet, the inner part of the outer shell being a wind chamber shell, the wind chamber shell forming a warm air cavity, a fan being provided at the air inlet of the warm air cavity, the air outlet being connected to the air outlet of the warm air cavity, and a PTC heating element being provided inside the warm air cavity between the fan and the air outlet. The air outlet of the shell is provided with an air guide assembly, which constitutes the air outlet of the warm air chamber. The air outlet is annular. The air guide assembly has a stepped first ring, a second ring, a third ring, and a fourth ring from the outside to the inside. The first ring is at the front. There is an outer ring air outlet between the first ring and the second ring. There is a middle ring air outlet between the second ring and the third ring. There is an inner ring air outlet between the third ring and the fourth ring. The outer ring air outlet, the middle ring air outlet, and the inner ring air outlet constitute the air outlet.
[0007] Furthermore, a first support block is provided between the first ring and the second ring, a second support block is provided between the second ring and the third ring, and a third support block is provided between the third ring and the fourth ring.
[0008] Furthermore, there are four support blocks: the first support block, the second support block, and the third support block, which are respectively arranged on the top, bottom, left, and right sides of the air outlet.
[0009] In one preferred embodiment, the wind cell shell includes a rear shell and a front shell, with the air guide assembly integrated on the front shell and located on the upper side.
[0010] In a further preferred embodiment, the upper part of the rear shell of the cabin contracts forward to form an angle, thereby gradually narrowing the upper side of the warm air cavity.
[0011] To increase wind power, the fan is a centrifugal fan.
[0012] To increase airflow stability, the main body is mounted on a base and also includes a swing drive device to drive the main body to rotate and swing relative to the base.
[0013] When in use, the air enters through the air inlet at the rear of the main body and is drawn into the warm air chamber by the fan. After being heated by the PTC heating element in the warm air chamber, the air is blown out from the bladeless fan outlet at the top. The air outlet consists of an outer ring air outlet, a middle ring air outlet, and an inner ring air outlet, and the air guides are distributed in a stepped manner to form a good air mixing effect.
[0014] The beneficial effects of this utility model are as follows: 1. The air outlet of the bladeless heater is divided into an outer ring air outlet, a middle ring air outlet, and an inner ring air outlet. The warm air in the inner ring air outlet is initially mixed with the cold air blown out of the auxiliary air duct, and then mixed a second time with the warm air in the middle ring air outlet, and a third time with the warm air in the outer ring air outlet, forming a uniformly mixed warm air, providing the user with a good experience. 2. The upper end of the warm air cavity of the bladeless fan gradually narrows, which can guide the air force to turn smoothly, making the airflow more uniform and smooth. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of one embodiment of the present invention.
[0016] Figure 2 This is a schematic diagram of the rear disassembly of one embodiment of the present invention.
[0017] Figure 3 This is a front disassembly diagram of one embodiment of the present invention.
[0018] Figure 4 This is a cross-sectional schematic diagram of one embodiment of the present invention.
[0019] Figure 5 This is a schematic diagram of the forehull of one embodiment of the present invention. Detailed Implementation
[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0021] Example 1
[0022] Combined with appendix Figures 1 to 5 A bladeless warm air heater 8 includes a main body 1, which has an outer shell 2 and a wind chamber shell 3. The upper end of the outer shell 2 is an air outlet, and an auxiliary air duct 4 is provided in the middle of the air outlet. The lower rear part of the outer shell 2 is an air inlet 5. The wind chamber shell 3 is located inside the outer shell 2, forming a warm air cavity 6. A fan 8 is provided at the air inlet 7 of the warm air cavity 6. The air outlet is connected to the air outlet 9 of the warm air cavity 6, and a PTC heating element 10 is provided inside the warm air cavity 6 between the fan 8 and the air outlet 9. An air guide assembly 11 is provided at the air outlet of the outer shell 2. The air assembly 11 forms the air outlet 9 of the warm air chamber 6. The air outlet 9 is annular. The air guide assembly 11 has a stepped first ring 12, a second ring 13, a third ring 14, and a fourth ring 15 from the outside to the inside. The first ring 12 is at the front. There is an outer ring air outlet 16 between the first ring 12 and the second ring 13. There is a middle ring air outlet 17 between the second ring 13 and the third ring 14. There is an inner ring air outlet 18 between the third ring 14 and the fourth ring 15. The outer ring air outlet 16, the middle ring air outlet 17, and the inner ring air outlet 18 constitute the air outlet 9.
[0023] Furthermore, a first support block 19 is provided between the first ring 12 and the second ring 13, a second support block 20 is provided between the second ring 13 and the third ring 14, and a third support block 21 is provided between the third ring 14 and the fourth ring 15.
[0024] Furthermore, there are four support blocks: the first support block 19, the second support block 20, and the third support block 21, which are respectively arranged on the top, bottom, left, and right sides of the air outlet 9.
[0025] In a preferred embodiment, the wind chamber shell 3 includes a rear shell 22 and a front shell 23, and the air guide assembly 11 is integrated on the front shell 23 and located on the upper side.
[0026] In a further preferred embodiment, the upper part of the rear shell 22 contracts forward to form an oblique angle 24, thereby gradually narrowing the upper side of the warm air cavity 6.
[0027] To increase wind power, the fan 8 is a centrifugal fan.
[0028] To increase airflow stability, the main body 1 is mounted on a base 25 and also includes a swing drive device 26 to drive the main body 1 to rotate and swing relative to the base 25.
[0029] When in use, the wind enters through the air inlet 5 at the rear of the main body 1 and is drawn into the warm air chamber 6 by the fan 8. After being heated by the PTC heater 10 in the warm air chamber 6, it is blown out from the bladeless fan outlet 9 at the top. The outlet 9 consists of an outer ring air outlet 16, a middle ring air outlet 17 and an inner ring air outlet 18, and the air guides are distributed in a stepped manner to form a good air mixing effect.
[0030] The beneficial effects of this utility model are as follows: 1. The air outlet of the bladeless heater is divided into an outer ring air outlet, a middle ring air outlet, and an inner ring air outlet. The warm air in the inner ring air outlet is initially mixed with the cold air blown out of the auxiliary air duct, and then mixed a second time with the warm air in the middle ring air outlet, and a third time with the warm air in the outer ring air outlet, forming a uniformly mixed warm air, providing the user with a good experience. 2. The upper end of the warm air cavity of the bladeless fan gradually narrows, which can guide the air force to turn smoothly, making the airflow more uniform and smooth.
Claims
1. A bladeless warm air blower, comprising a main body, the main body having an outer shell and a wind chamber shell, the upper end of the outer shell being an air outlet, an auxiliary air duct being provided in the middle of the air outlet, the lower rear part of the outer shell being an air inlet, the inner part of the outer shell being a wind chamber shell forming a warm air cavity, a fan being provided at the air inlet of the warm air cavity, the air outlet being connected to the air outlet of the warm air cavity, and a PTC heating element being provided inside the warm air cavity between the fan and the air outlet, characterized in that: The air outlet of the outer shell is provided with an air guide component, which constitutes the air outlet of the warm air chamber. The air outlet is annular. The air guide component has a stepped first ring, a second ring, a third ring, and a fourth ring from the outside to the inside. The first ring is at the front. There is an outer ring air outlet between the first ring and the second ring. There is a middle ring air outlet between the second ring and the third ring. There is an inner ring air outlet between the third ring and the fourth ring. The outer ring air outlet, the middle ring air outlet, and the inner ring air outlet constitute the air outlet.
2. The bladeless warm air blower according to claim 1, characterized in that: A first support block is provided between the first ring and the second ring, a second support block is provided between the second ring and the third ring, and a third support block is provided between the third ring and the fourth ring.
3. The bladeless warm air blower according to claim 2, characterized in that: There are four support blocks: the first support block, the second support block, and the third support block, which are respectively arranged on the top, bottom, left, and right sides of the air outlet.
4. The bladeless warm air blower according to claim 1, characterized in that: The wind tunnel shell includes a rear shell and a front shell, and the air guide assembly is integrated on the front shell and located on the upper side.
5. The bladeless warm air blower according to claim 4, characterized in that: The upper part of the rear shell of the cabin contracts forward to form an angle, thereby gradually narrowing the upper side of the warm air cavity.
6. The bladeless warm air blower according to claim 1, characterized in that: The fan in question is a centrifugal fan.
7. The bladeless warm air blower according to claim 1, characterized in that: The main body is mounted on a base and also includes a swing drive device to drive the main body to rotate and swing relative to the base.