IP Library › Granted Patent US 12687320
Granted Patent B2
US 12687320 · App. 17/951,354 · Granted Jul 21, 2026

Driving part of warm air heater and warm air heater

Inventors: Houyong Xu (Shanghai, CN); Yan She (Shanghai, CN)
Assignee: Shanghai KOHLER Electronics, Ltd.
F24H3/022F24H9/2071H05K1/0203H05K7/20145E03D9/052F24H2250/02
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Quick Facts
Patent No.
US 12687320
App. No.
17/951,354
Granted
Jul 21, 2026
Kind
B2
Abstract

The present disclosure provides a driving part of a warm air heater and the warm air heater, wherein the driving part comprises a driving circuit board, and a silicon-controlled element is arranged on the driving circuit board; the driving circuit board is arranged in an air duct of the warm air heater, and the driving circuit board is positioned at the upstream of the heating part or is flush with the heating part, wherein the upstream or the flush is based on the direction of air flow in the air duct. The driving part of the present disclosure utilizes the fan to cool the silicon-controlled element without adding large-area radiating fins, thus reducing the cost of the driving part, and the driving circuit board is not arranged on the main control circuit board anymore, thus realizing the miniaturization of the main control part.

Claims (63)

1 . A driving part of a warm air heater, comprising:

a driving circuit board configured to be disposed in an air duct of the warm air heater and configured to be disposed at an upstream of a heating part of the warm air heater or leveled with the heating part of the warm air heater;

a silicon-controlled element disposed on the driving circuit board,

wherein the driving circuit board is disposed at an upstream of the heating part of the warm air heater or leveled with the heating part of the warm air heater relative to an airflow direction in the air duct,

wherein the air duct includes a first assembly and a second assembly, and

wherein a connecting portion of one of the first assembly and the second assembly comprises a groove and a connecting portion of the other of the first assembly and the second assembly comprises teeth, and the teeth are engaged with the groove.

2 . The driving part of the heater of claim 1 ,

wherein when the driving circuit board is disposed on an inner wall of the air duct, the silicon-controlled element is disposed on an airflow passage of the air duct.

3 . The driving part of the heater of claim 2 , further comprising:

a fixing piece configured to fix the driving circuit board on the inner wall of the air duct.

4 . The driving part of the heater of claim 1 , further comprising:

a sealing adhesive layer disposed on a surface of the driving circuit board and disposed between the driving circuit board and the inner wall of the air duct.

5 . The driving part of the heater of claim 4 ,

wherein the driving circuit board is configured to be disposed in an accommodating cavity of the air duct, and

wherein the sealing adhesive layer is poured into the accommodating cavity.

6 . The driving part of the warm air heater according to claim 1 , further comprising:

a heat radiating fin disposed on the silicon-controlled element.

7 . The driving part of the warm air heater according to claim 6 ,

wherein the heat radiating fin has a size matched with a size of the silicon-controlled element.

8 . The driving part of the warm air heater according to claim 1 ,

wherein the driving circuit board is configured to be disposed at a downstream of a fan, and

wherein the fan configured to blow cold wind to cool down the silicon-controlled element disposed on the driving circuit board.

9 . The driving part of the warm air heater according to claim 6 ,

wherein the heating part of the warm air heater is disposed in the air duct, and

wherein the cold wind blown from the heat radiating fin travels along the air duct to first cool down the silicon-controlled element and then to be heated by the heating part to become warm wind.

10 . A warm air heater, comprising:

a fan,

an air duct,

a heating part disposed in the air duct, and

a driving part, comprising:

a driving circuit board disposed in the air duct and disposed at an upstream of the heating part or leveled with the heating part;

a silicon-controlled element disposed on the driving circuit board,

wherein the driving circuit board is disposed at an upstream of the heating part or leveled with the heating part relative to an airflow direction in the air duct,

wherein the air duct includes a first assembly and a second assembly, and

wherein a connecting portion of one of the first assembly and the second assembly comprises a groove and a connecting portion of the other of the first assembly and the second assembly comprises teeth, and the teeth are engaged with the groove.

11 . The warm air heater according to claim 10 ,

wherein the heating part comprises at least one of a heating coil, a heating wire, or a ceramic heater.

12 . The warm air heater according to claim 10 ,

wherein the air duct comprises an accommodating cavity disposed at a position corresponding to the driving circuit board, and

wherein the driving circuit board is disposed in the accommodating cavity.

13 . The warm air heater according to claim 12 , further comprising:

a sealing adhesive layer formed by pouring colloid into the accommodating cavity.

14 . The warm air heater according to claim 10 ,

wherein the air duct comprises at least one through-hole configured to allow a wire to pass through, and

wherein the wire is configured to transmit signals between the driving circuit board and a main control circuit board.

15 . The warm air heater according to claim 10 , further comprising a heat radiating fin disposed on the silicon-controlled element.

16 . The warm air heater according to claim 15 ,

wherein the heat radiating fin has a size matched with a size of the silicon-controlled element.

17 . The warm air heater according to claim 10 ,

wherein the driving circuit board is configured to be disposed at a downstream of a fan,

wherein the fan is configured to blow cold wind to cool down the silicon-controlled element disposed on the driving circuit board.

18 . The warm air heater according to claim 15 ,

wherein the heating part of the warm air heater is disposed in the air duct, and

wherein the cold wind blown from the heat radiating fin travels along the air duct to first cool down the silicon-controlled element and then to be heated by the heating part to become warm wind.

19 . The warm air heater according to claim 10 ,

wherein when the driving circuit board is disposed on an inner wall of the air duct, the silicon-controlled element is disposed on an airflow passage of the air duct.

20 . A toilet comprising:

a warm air heater including:

a driving circuit board configured to be disposed in an air duct of the warm air heater and configured to be disposed at an upstream of a heating part of the warm air heater or leveled with the heating part of the warm air heater;

a silicon-controlled element disposed on the driving circuit board,

wherein the driving circuit board is disposed at an upstream of the heating part of the warm air heater or leveled with the heating part of the warm air heater relative to an airflow direction in the air duct,

wherein the air duct includes a first assembly and a second assembly, and

wherein a connecting portion of one of the first assembly and the second assembly comprises a groove and a connecting portion of the other of the first assembly and the second assembly comprises teeth, and the teeth are engaged with the groove.