Title:
Hot water storage tank
Document Type and Number:
Japanese Patent JP6314853
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a hot water storage tank having excellent strength relative to negative pressure without adding a reinforcement ring.SOLUTION: A hot water storage tank 1 includes: a cylindrical tank body portion 2; a tank upper end plate 3 for closing an opening at one end of the tank body portion 2; and a tank lower end plate 4 for closing an opening at the other end of the tank body portion 2. On the surface of the tank body portion 2, a plurality of recessed portions 5 are provided in a range separated from one end and the other end by a predetermined distance or longer in the cylindrical axial direction and the circumferential direction of the tank body portion 2. The bottom surface of the recessed portion 5 has a regular polygonal shape, and the width of a clearance between the recessed portions 5 formed on the back surface side of the tank body portion 2 is equal to or shorter than the length of one side of the bottom surface of the recessed portion 5.SELECTED DRAWING: Figure 1
Inventors:
Yoshiro Shimizu
Okawara Masayoshi
Yamaguchi Yasushi
Okawara Masayoshi
Yamaguchi Yasushi
Application Number:
JP2015010583A
Publication Date:
April 25, 2018
Filing Date:
January 22, 2015
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
F24H9/00; B65D90/02; B65D90/48
Domestic Patent References:
| JP633304Y2 | ||||
| JP3180228A | ||||
| JP201213355A | ||||
| JP163691U | ||||
| JP201481103A |
Attorney, Agent or Firm:
Mamoru Takada
Hideki Takahashi
Jiro Ozawa
Hideki Takahashi
Jiro Ozawa
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