JPH0765782B2 - Heat storage tank - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the shape and structure of a heat storage tank that constitutes a heat storage device that stores waste heat such as a refrigeration cycle and a compressor.

2. Description of the Related Art A conventional heat storage tank constituting a heat storage device for storing waste heat of a compressor will be described with reference to FIG. In the figure, the heat storage tank comprises an upper lid 1, a container body 3, a bottom lid 4 and an explosion-proof valve 5, and a heat exchanger is housed inside together with a heat storage material (not shown). Then, it is attached as a heat storage tank so as to be in close contact with the compressor 6 which is a heat source. The single heat storage tank has the shape shown in Fig. 5, is made entirely of metal, and the top lid 1, container body 3, and bottom lid 4 are mechanically fixed by arc welding or the like, and the internal pressure is abnormal. The explosion-proof valve 5 was attached as protection when rising, and prevented the heat storage tank from being deformed.

Problems to be Solved by the Invention However, the above-described conventional heat storage tank has problems that the number of welding points is large, the cost is high, and the workability is poor. Further, since the upper lid is also welded, the heat exchanger to be housed in the container must be housed before welding the container body and the upper lid. However, it is necessary to coat the outside with rust countermeasures and the like, and the heat generated at that time may cause a malfunction such as deformation of the heat exchanger housed therein. Also, if there is a defect such as a pinhole in the stored heat exchanger, the internal pressure of the heat storage tank may rise abnormally due to refrigerant leakage during operation of the compressor, and the appearance of the heat storage tank may be deformed or punctured. Therefore, the explosion-proof valve 5 is required as a safety device, which also increases the cost. Further, even during service, there is a problem that the entire heat storage tank must be replaced because the inside of the heat storage tank cannot be directly checked. The present invention solves the above-mentioned conventional problems, and aims to improve workability of a heat storage tank, maintain safety without using an explosion-proof valve, etc., and quickly respond at the time of service. Is.

Means for Solving the Problems In order to solve the above problems, the present invention is sealed by an upper lid made of a rubber material having a high elastic modulus of the opening of a heat storage container made of a hard material such as metal, and further A part of the upper lid is made thin.

Action With the above configuration, the number of welding points is reduced, the quality of the built-in heat exchanger is not affected by the assembly work, and surface treatment such as painting to prevent rust is performed only with the container. Can be improved and cost can be reduced. In addition, by using a partially thin upper lid made of rubber, the processability of rubber is excellent for any complicated container, and the high elasticity makes it a highly sealable container. Sex is obtained. Further, by making a part of the rubber thin, the degree of freedom of the position of the engaging portion of the upper lid with respect to the container body and the degree of twisting are increased, and the adhesiveness to the container body is enhanced, so that the sealing property is further enhanced. Also,
Also in terms of safety, if the internal pressure in the heat storage tank rises, it absorbs it by bulging the upper lid before giving deformation to the container, and even if the internal pressure rises, only the thin part of the lid is broken. It is possible to prevent the container and the entire lid from being largely deformed. Therefore, even during subsequent repairs, the inside of the container can be easily seen, and replacement parts can be replaced without replacing the entire heat storage tank and only the replacement of the top lid, reducing man-hours and cost. Can be made.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. FIG. 3 shows a container body 3 that constitutes a heat storage tank to be attached to a compressor used in a refrigerant circuit of a heat pump air conditioner, in which a heat exchanger 7 is housed and filled with a heat storage material. Has been done. FIG. 1 is an upper lid for closing the upper opening of the container body described in FIG. 3, and this lid is made of highly elastic rubber to improve the sealing property. A thin portion 2 is provided for improving the sealing property and adjusting the pressure inside the heat storage tank. FIG. 2 shows the cross-sectional shape of the upper lid. With such an upper lid of the heat storage tank, welding work of the upper lid after the heat exchanger 7 is housed is not necessary at the time of assembly, quality defects due to heat during welding of the heat exchanger 7 do not occur, and the compressor is For the horseshoe-shaped container body 3 like this that is closely attached to the outer periphery,
High adhesion can be achieved by using rubber, a highly elastic material. In addition, several thin parts provided on the top lid give further elasticity, further improve the adhesion, and when the pressure inside the heat storage tank rises, the adjustment function is further expanded by swelling and the pressure is further increased. In this case, since the pressure inside the container is lowered due to the breakage, it is not necessary to deform the container body, so that the heat storage material can be kept out of the outside to a minimum. Furthermore, even at the time of repair, the inside of the container can be inspected simply by removing the upper lid, and the parts can be replaced by replacing only the failed part and the upper lid without removing the entire heat storage tank.

EFFECTS OF THE INVENTION As described above, according to the present invention, by using the rubber upper lid for the opening of the heat storage tank, the assembling property and the adhesiveness are improved, and the rubber upper lid is provided with several thin portions. As a result, the inner pressure can be further adjusted and abnormalities can serve as a safety device when the pressure rises, without changing the shape of the container body.

[Brief description of drawings]

FIG. 1 is a perspective view showing an upper lid of a heat storage tank in an embodiment of the present invention, FIG. 2 is a sectional view showing a mounting state of the upper lid, and FIG. 3 is a perspective view of the heat storage tank container body. Figure (a),
FIG. 5B is a plan view and a front view showing an example of use of a conventional heat storage tank, and FIG. 5 is a perspective view of the heat storage tank main body. 1 ... Top cover, 2 ... Thin-walled part, 3 ... Container body, 4 ... Bottom cover, 5 ... Explosion-proof valve, 6 ... Compressor, 7 ... Heat exchanger.

Claims (2)

[Claims] 1. A heat storage tank comprising a container made of a hard material such as a metal having an opening at the upper side, and an upper lid made of a rubber material for sealing the upper opening. 2. The heat storage tank according to claim 1, wherein the upper lid is formed with a plurality of thin-walled portions that are broken by an abnormal increase in internal pressure.