Heat exchange – With thermal or acoustical blocker – Insulation and temperature modifier within barrier member
Patent
1986-04-01
1988-02-09
Cline, William R.
Heat exchange
With thermal or acoustical blocker
Insulation and temperature modifier within barrier member
165 56, 264 465, F24H 300, B29C 6500
Patent
active
047235985
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention is concerned with a warming panel provided in its interior with a heat insulating layer formed by injecting liquid of urethane foam, or the like.
BACKGROUND TECHNOLOGY
In general, various panels such as floor warming panel, etc. have so far been manufactured by injecting liquid of a heat insulating material such as urethane foam, etc. into an outer shell structure interior in a hollow planar shape with conduit tube for passing heating medium through it being arranged, thereby forming an integral heat insulating layer. However, in injecting liquid of the heat insulating material such as urethane foam, etc. into the outer shell structure, the liquid running at a high speed collides with the outer shell structure, which tends to cause displacement of those fixed parts such as stud nuts which have been tentatively secured at positions inside the outer shell structure, where they meet the gushing liquid of the insulating material, or breakage and damage to those joined portions at such colliding positions with the consequent high rate of yield of disqualified product.
Similarly, in the injection into the outer shell structure of the liquid such as urethane foam, etc., the liquid running at a high speed collides with the inner wall of the outer shell structure opposite to the injection port from the direction substantially perpendicular to it, on account of which the liquid in the outer shell structure takes a random flowing direction to cause, in most cases, unfilled portion, i.e., mold cavity to be created at the center part of the outer shell structure which is structurally unstable with the consequent high rate of yield of disqualified product.
OBJECTS OF THE INVENTION
It is the primary object of the present invention to provide a warming panel which is substantially free from displacement of the fixed parts, and damage or deformation of the joined portions.
It is the secondary object of the present invention to provide a floor warming panel which is able to control the charging direction of the liquid, and to leave the unfilled portion at a location in the outer shell structure having no structural vulnerability.
SUMMARY OF THE INVENTION
One of the characteristics of the present invention resides in the provision of a buffer member in the outer shell structure, which prevents the liquid from directly colliding with the fixed parts and joined portions, in such a manner that it may be oppositely positioned to the charging port of the heat insulating liquid, thereby making it possible to prevent displacement of the fixed parts, or damage or deformation of the joined portions, to be resulted from injection of the liquid under high pressure, and thereby reducing production of disqualified product.
Another characteristic of the present invention resides in the provision of a flow guide plate, which restricts the flowing direction of the liquid being injected at a high speed into the outer shell structure, in such a manner that the ultimate charged portion may come to the side of a predetermined end face of the outer shell structure, thereby making it possible to prevent displacement of the fixed parts, or damage or deformation of the joined portions to be brought about by collision of liquid by its injection, thereby making it possible that no unfilled portion of the injection liquid may be formed at the center part of the outer shell structure which is structurally unstable, and thereby making it possible to reduce remarkably a rate of yield of disqualified product.
BRIEF EXPLANATIONS OF THE DRAWING
FIG. 1 is a perspective view showing one embodiment of the warming panel to be an object of the present invention;
FIG. 2 is an explanatory diagram showing a structure of the outer shell structure;
FIG. 3 is a longitudinal cross-sectional view showing a state of setting the outer shell structure in an injection press mold prior to injection of the liquid;
FIG. 4 is an explanatory diagram showing a state of flow of the liquid at the time of its injection;
FIG. 5 is an
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Kiyoshi Nakamura
Susumu Matsui
Yoshio Nishimoto
Cline William R.
Ford John K.
Mitsubishi Denki & Kabushiki Kaisha
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