Enhanced warmer main machine
By combining a dual-air duct design with a reverse-rotating impeller, the problem of limited heating range in traditional heaters is solved, enabling rapid heating and uniform heating in large bathrooms and improving ease of use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIAXING CHUHAN ELECTRIC APPLIANCE CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-05-12
AI Technical Summary
Traditional heaters use a single air duct structure, which results in limited air volume and a small heating range, making it difficult to meet the needs of rapid heating in large bathrooms.
The device adopts a dual-air duct design, combining a first motor and a first impeller with a large PTC ceramic heater, and a second motor and a second impeller with a small PTC ceramic heater to achieve dual-air duct heating. The air exchange and exhaust function is achieved through the reverse rotation function of the second impeller, thus integrating dual-air duct heating and air exchange functions.
It significantly improves the uniformity of hot air distribution and space utilization, meeting the need for rapid heating in large bathrooms and enhancing ease of use.
Smart Images

Figure CN224230124U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of heater technology, and specifically relates to an enhanced heater main unit. Background Technology
[0002] Bathroom heaters are heating devices specifically designed for bathroom spaces, primarily to provide a quick and even warm environment during cold seasons.
[0003] Currently, Chinese utility model patent CN216644323U discloses a waterproof and highly safe heater main unit, including a main unit rear cover and a face cover on the main unit rear cover. The main unit rear cover has a volute connected to its interior, and the main unit rear cover has an air inlet connected to the interior of the volute. The face cover has an air outlet connected to the interior of the volute. The main unit rear cover also has an electrical mounting bracket, on which a PCB control main board is mounted. The main unit rear cover has a first wire channel with one end connected to the interior of the main unit rear cover and the other end connected to the outside. The opening of the first wire channel is located on the end face of the main unit rear cover facing the face cover. The electrical mounting bracket has a wire clip supported on the face cover, and the wire clip has a second wire channel. This heater main unit is waterproof, safe and reliable to use, has complete overall functions, and is highly practical.
[0004] Traditional heaters typically use a single air duct structure, which results in limited airflow and a small heating range, making it difficult to meet the needs of rapid heating in large bathrooms. To solve these problems, we offer an enhanced heater unit. Utility Model Content
[0005] The purpose of this utility model is to provide an enhanced heater main unit to solve the problem mentioned in the background art that traditional heaters usually adopt a single air duct structure. The single air duct design results in limited air volume and a small heating range, making it difficult to meet the problem of rapid heating in large bathroom spaces.
[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an enhanced heater main unit includes a casing, a cover plate on the top of the casing, a first volute chamber integrally injection molded inside the casing, a large air duct integrally injection molded on one side of the first volute chamber, a second volute chamber integrally injection molded inside the casing, a ventilation air duct integrally injection molded on one side of the second volute chamber, a small air duct integrally injection molded on the other side of the second volute chamber, a first motor bolted inside the first volute chamber, a first impeller sleeved at the output end of the first motor, a second motor bolted inside the second volute chamber, a second impeller sleeved at the output end of the second motor, an air outlet hood on the top of the casing, and a small PTC ceramic heater and a large PTC ceramic heater respectively sleeved at the bottom of the air outlet hood.
[0007] Preferably, both ends of the air outlet shroud are fitted with first bolts, one end of which passes through the small PTC ceramic heater and the large PTC ceramic heater respectively and is threadedly connected to the housing.
[0008] Preferably, the cover plate has an integrally molded mounting groove that matches the air outlet hood, and the cover plate also has an integrally molded air inlet that matches the first impeller and the second impeller.
[0009] Preferably, the output ends of the first motor and the second motor are both threadedly connected to limit nuts, and a second bolt is sleeved inside the cover plate, with the bottom of the second bolt threadedly connected to the housing.
[0010] Preferably, a controller housing is provided at the top of the ventilation duct, a third bolt is fitted inside the controller housing, the bottom of the third bolt is threaded to the housing, a sealing plate is provided at the top of the cover plate, the front of the sealing plate is snapped into the cover plate, a fourth bolt is fitted inside the sealing plate, the bottom of the fourth bolt is threaded to the controller housing, and an ventilation pipe adapted to the ventilation duct is integrally injection molded on the back of the housing.
[0011] Preferably, a fifth bolt is fitted inside the housing, and the top of the fifth bolt is threadedly connected to the cover plate.
[0012] In summary, this utility model has the following beneficial effects:
[0013] This device, through the coordinated operation of a first motor, a first impeller, and a large PTC ceramic heater, can efficiently generate hot air. Simultaneously, it employs an independently controlled second motor, a second impeller, and a small PTC ceramic heater, which synergistically enhances hot air output to achieve dual-channel heating, expanding the heating coverage area. Furthermore, the reverse rotation of the second impeller enables ventilation. This innovative design integrates dual-channel heating and ventilation functions, solving the problem of limited heating range in traditional heaters. In particular, the optimized reversible second impeller structure allows for rapid switching between heating and ventilation modes without adding extra components, significantly improving space utilization and ease of use. It also ensures more even hot air distribution, meeting the needs of rapid heating in large bathrooms. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0015] Figure 2 This is an exploded view of the structure of this utility model;
[0016] Figure 3 This is a partial exploded view of the structure of this utility model.
[0017] Reference numerals in the attached diagram: 1. Housing; 2. Cover plate; 3. First volute chamber; 4. Main air duct; 5. Second volute chamber; 6. Ventilation duct; 7. Small air duct; 8. First motor; 9. First impeller; 10. Second motor; 11. Second impeller; 12. Air outlet hood; 13. Small PTC ceramic heater; 14. Large PTC ceramic heater; 15. First bolt; 16. Mounting slot; 17. Air inlet; 18. Limit nut; 19. Second bolt; 20. Controller housing; 21. Third bolt; 22. Sealing plate; 23. Fourth bolt; 24. Ventilation pipe; 25. Fifth bolt. Detailed Implementation
[0018] The present invention will be further described in detail below with reference to the accompanying drawings.
[0019] Example 1:
[0020] refer to Figure 1-3 An enhanced heater main unit includes a housing 1, a cover plate 2 on the top of the housing 1, a first volute chamber 3 integrally injection molded inside the housing 1, a large air duct 4 integrally injection molded on one side of the first volute chamber 3, a second volute chamber 5 integrally injection molded inside the housing 1, a ventilation air duct 6 integrally injection molded on one side of the second volute chamber 5, and a small air duct 7 integrally injection molded on the other side of the second volute chamber 5. A first motor 8 is bolted inside the first volute chamber 3, and a first impeller 9 is sleeved at the output end of the first motor 8. A second motor 10 is bolted inside the second volute chamber 5, and a second impeller 11 is sleeved at the output end of the second motor 10. An air outlet hood 12 is provided on the top of the housing 1, and a small PTC ceramic heater 13 and a large PTC ceramic heater 14 are respectively sleeved at the bottom of the air outlet hood 12.
[0021] refer to Figure 3 Both ends of the air outlet shroud 12 are fitted with first bolts 15. One end of the first bolt 15 passes through the small PTC ceramic heater 13 and the large PTC ceramic heater 14 respectively and is threaded to the housing 1. By setting the first bolts 15, it is possible to effectively facilitate the installation and fixing of the air outlet shroud 12, the small PTC ceramic heater 13 and the large PTC ceramic heater 14.
[0022] refer to Figure 2 The cover plate 2 has an integrally molded mounting groove 16 that matches the air outlet hood 12. The cover plate 2 also has an integrally molded air inlet hole 17 that matches the first impeller 9 and the second impeller 11. By setting the air inlet hole 17, it can cooperate with the first impeller 9 and the second impeller 11 to allow air intake.
[0023] refer to Figure 3The output ends of the first motor 8 and the second motor 10 are both threaded with limit nuts 18. By setting limit nuts 18, the first impeller 9 and the second impeller 11 can be limited and fixed. The cover plate 2 is fitted with a second bolt 19. The bottom of the second bolt 19 is threaded with the housing 1. By setting the second bolt 19, the cover plate 2 can be installed and fixed.
[0024] refer to Figure 2 The top of the ventilation duct 6 is equipped with a controller box 20, which facilitates the installation of the controller. A third bolt 21 is fitted inside the controller box 20, and the bottom of the third bolt 21 is threaded to the housing 1. The third bolt 21 facilitates the installation and fixation of the controller box 20. The top of the cover plate 2 is equipped with a sealing plate 22, and the front of the sealing plate 22 is snapped into the cover plate 2. A locking block is integrally injection molded on the front of the sealing plate 22. The inside of the cover plate 2 has a slot that matches the locking block. A fourth bolt 23 is fitted inside the sealing plate 22, and the bottom of the fourth bolt 23 is threaded to the controller box 20. The fourth bolt 23 facilitates the installation and fixation of the sealing plate 22. The back of the housing 1 is integrally injection molded with an air exchange pipe 24 that matches the ventilation duct 6. The air exchange pipe 24 facilitates the connection of the flexible hose.
[0025] refer to Figure 2 The housing 1 is fitted with a fifth bolt 25. The top of the fifth bolt 25 is threaded to the cover plate 2. By setting the fifth bolt 25, the cover plate 2 can be installed effectively.
[0026] Brief description of the usage process: The user can start the first motor 8 and the large PTC ceramic heater 14, so that the first motor 8 drives the first impeller 9 to blow air. When the airflow passes through the large air duct 4 and the large PTC ceramic heater 14, the large PTC ceramic heater 14 heats the airflow. Then the hot air is blown out through the air outlet hood 12. At the same time, the user can start the second motor 10 and the small PTC ceramic heater 13, so that the second motor 10 drives the second impeller 11 to rotate forward, so that the second impeller 11 blows air into the small air duct 7, so that the airflow passes through the small PTC ceramic heater 13 to heat the airflow. Then the hot air is blown out through the air outlet hood 12, thereby effectively increasing the hot air output of the device and increasing the heating area. The user can also start the second impeller 11 alone to rotate the second impeller 11 in reverse, so that the second impeller 11 exhausts and exchanges air through the ventilation duct 6 and the ventilation pipe 24.
[0027] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
Claims
1. An enhanced heater main unit, comprising a housing (1), characterized in that: The top of the housing (1) is provided with a cover plate (2). The housing (1) is integrally injection molded with a first volute chamber (3). A large air duct (4) is integrally injection molded on one side of the first volute chamber (3). The housing (1) is integrally injection molded with a second volute chamber (5). A ventilation air duct (6) is integrally injection molded on one side of the second volute chamber (5). A small air duct (7) is integrally injection molded on the other side of the second volute chamber (5). A first motor (8) is bolted inside the first volute chamber (3). A first impeller (9) is sleeved on the output end of the first motor (8). A second motor (10) is bolted inside the second volute chamber (5). A second impeller (11) is sleeved on the output end of the second motor (10). An air outlet hood (12) is provided on the top of the housing (1). A small PTC ceramic heater (13) and a large PTC ceramic heater (14) are respectively sleeved on the bottom of the air outlet hood (12).
2. The enhanced heater main unit according to claim 1, characterized in that: Both ends of the air outlet hood (12) are fitted with first bolts (15), one end of the first bolts (15) passes through the small PTC ceramic heater (13) and the large PTC ceramic heater (14) respectively and is threaded to the housing (1).
3. The enhanced heater main unit according to claim 1, characterized in that: The cover plate (2) has an integrally molded mounting groove (16) that is compatible with the air outlet hood (12), and the cover plate (2) has an integrally molded air inlet hole (17) that is compatible with the first impeller (9) and the second impeller (11).
4. The enhanced heater main unit according to claim 1, characterized in that: The output ends of the first motor (8) and the second motor (10) are both threadedly connected to limit nuts (18), and the cover plate (2) is fitted with a second bolt (19), the bottom of the second bolt (19) is threadedly connected to the housing (1).
5. The enhanced heater main unit according to claim 1, characterized in that: The top of the ventilation duct (6) is provided with a controller box (20), and a third bolt (21) is fitted inside the controller box (20). The bottom of the third bolt (21) is threaded to the housing (1). The top of the cover plate (2) is provided with a sealing plate (22), and the front of the sealing plate (22) is snapped into the cover plate (2). The inside of the sealing plate (22) is provided with a fourth bolt (23), and the bottom of the fourth bolt (23) is threaded to the controller box (20). The back of the housing (1) is integrally injection molded with a ventilation pipe (24) that is compatible with the ventilation duct (6).
6. The enhanced heater main unit according to claim 1, characterized in that: The housing (1) is fitted with a fifth bolt (25), the top of which is threaded to the cover plate (2).