Heater and hair drying apparatus

Abstract

The present disclosure relates to a heater and a hair drying apparatus. The heater includes an inner layer including a first end wall, a second end wall, a third end wall and a fourth end wall; the first end wall is arranged opposite to the second end wall; the third end wall is arranged opposite to the fourth end wall; the third end wall and the fourth end wall are respectively connected between the first end wall and the second end wall; and a heating element arranged on the third end wall. Compared with mica material, plastic material possesses better plastic performance with greater hardness. By manufacturing the inner layer of the heater using the plastic material, the inner layer is easier to be set to alternative shapes and fixed to. Therefore, other structural elements are easier to be mounted relative to the inner layer.

What is claimed is: 
     
         1 . A heater, comprising:
 an inner layer, which is made of plastic material, including a first end wall, a second end wall, a third end wall and a fourth end wall; the first end wall is arranged opposite to the second end wall; the third end wall is arranged opposite to the fourth end wall; the third end wall and the fourth end wall are respectively connected between the first end wall and the second end wall; and   a heating element arranged on the third end wall.   
     
     
         2 . The heater of  claim 1 , wherein the inner layer is of hollow structure, the third end wall forming an external sidewall of the inner layer, the fourth end wall forming an internal sidewall of the inner layer. 
     
     
         3 . The heater of  claim 1 , wherein the inner layer is of annular structure, the third end wall and the fourth end wall respectively extending along an axial direction of the inner layer, the heating element winding around the third end wall. 
     
     
         4 . The heater of  claim 3 , wherein the heater further comprises an outer layer for insulating the heating element, the outer layer being of annular structure and extending around the heating element which is arranged between the third end wall and the outer layer. 
     
     
         5 . The heater of  claim 4 , wherein the outer layer includes a fifth end wall, a sixth end wall, a seventh end wall and an eighth end wall; the fifth end wall is arranged opposite to the sixth end wall; the seventh end wall is arranged opposite to the eighth end wall; the seventh end wall and the eighth end wall are respectively connected between the fifth end wall and the sixth end wall, and extend around the heating element which is arranged between the third end wall and the eighth end wall. 
     
     
         6 . The heater of  claim 4 , wherein the heater further comprises a supporter for supporting the heating element, the supporter being arranged on the third end wall, and extending towards the outer layer along a radial direction of the inner layer. 
     
     
         7 . The heater of  claim 6 , wherein at least one of the supporter and the outer layer is made of insulating material. 
     
     
         8 . The heater of  claim 6 , wherein a plurality of supporters are provided and arranged at intervals around a circumferential direction of the third end wall. 
     
     
         9 . The heater of  claim 8 , wherein at least six supporters are provided and arranged at intervals around the circumferential direction of the third end wall. 
     
     
         10 . The heater of  claim 6 , wherein the supporter provides a locating opening for locating the heating element. 
     
     
         11 . The heater of  claim 10 , wherein a plurality of locating openings are provided and arranged along an identical line on the supporter at intervals, the heating element including multiple turns of coil, each turn being adjacent to another turn; the multiple turns of coil of the heating element are respectively located in the plurality of locating openings. 
     
     
         12 . The heater of  claim 11 , wherein the coil is of zigzag shape or of wave shape. 
     
     
         13 . The heater of  claim 12 , wherein a maximum distance from the coil to the third end wall is 6-9 mm. 
     
     
         14 . The heater of  claim 12 , wherein the coil includes a first bending portion and a second bending portion connected to each other; the first bending portion and the second bending portion both wind around the third end wall, a length of the second bending portion along a circumference direction of the inner layer being greater than that of the first bending portion along a circumference direction of the inner layer. 
     
     
         15 . The heater of  claim 1 , wherein the plastic material is any one of polyphenyl ester, polybenzimidazole, polyboron diphenyl siloxane, polyphenylene sulfide, chlorinated polyether. 
     
     
         16 . A hair drying apparatus, comprising a heater which comprises:
 an inner layer, which is made of plastic material, including a first end wall, a second end wall, a third end wall and a fourth end wall; the first end wall is arranged opposite to the second end wall; the third end wall is arranged opposite to the fourth end wall; the third end wall and the fourth end wall are respectively connected between the first end wall and the second end wall; and   a heating element arranged on the third end wall.