JPS6073216A - Exhausting device for thermal medium transmission circuit - Google Patents

Abstract

PURPOSE:To facilitate the air bleeding as well as to prevent damages to the gallery by forming a bellows in the tube wall of a main pipe of the thermal medium circuit for cooling and/or heating as well as by providing a cap having no bleeding pipe that is expandable by an external pressure. CONSTITUTION:The thermal medium manifold 1 that makes up a thermal medium transmission circuit comprises a main pipe 2 and multiple bleeding pipes 3 which are connected to the main pipe 2 with a space inbetween. A bellows 5 is formed in the pipe wall 4 of the main pipe 2 between the bleeding pipes 5 to absorb a thermal expansion or contraction, and a cap 6 having no bleeding pipe 3 that is expandable by an external pressure is attached to the main pipe 2. By compressing or extending the cap 6 causes the air pressure in the manifold 1 to change, which works to expel the air. That is, when circulating the thermal medium in the line of the bleeding pipe 3d with the valves 8a, 8b, 8c of the bleeding pipes 3a, 3b, 3c closed, the air remaining in the pipe can be forced out through a valve 8d by pushing and compressing the cap 6.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to an exhaust system for a heat medium transport circuit, and specifically, to a heat medium transport circuit including a heat medium collection pipe formed by providing a plurality of vent pipes at intervals in a main pipe. The present invention is useful for exhaust systems for transportation circuits, and more specifically for heat medium circuits such as air conditioning and heating systems.

[Background technology]

For example, in a heat medium transport circuit that performs heating by distributing high temperature heat medium obtained from a single boiler 21 to various radiators 22 as shown in FIG. 1, a main pipe is used to distribute the heat medium to each radiator 22. It is constructed using a collection pipe 25 having a plurality of extraction pipes 24 at 26.

As the wheels operate, air contained in the heating medium accumulates in the circuit, which poses a problem in that it reduces thermal efficiency. Furthermore, the distribution tube, which receives heat from the heating medium, expands and contracts as the heat rises and falls, and if it is fixed in a state that cannot absorb this expansion and contraction, damage will occur. The reality is that this damage often occurs in the collection pipe.

[Purpose of the invention]

The present invention was made with the aim of solving the above problems, and provides an exhaust system for a heat medium transport circuit that solves the problems of easily performing air removal and preventing damage to the collecting pipe.

[Disclosure of the invention]

This invention relates to a heat medium transport circuit including a heat medium collection pipe in which a plurality of extraction pipes are provided at intervals in a main pipe, in which a bellows is formed on the circumferential body of the main pipe between the extraction pipes. A heating medium characterized in that the main pipe is provided with a cap that expands and contracts under external pressure without a pipe removal, and further a check valve is provided on the pipe removal near the main pipe, and the valve is provided on the opposite side of the main pipe with respect to the check valve. The present invention provides an exhaust system for a transportation circuit.

The present invention will be explained below based on the drawings. FIG. 2 is a sectional view of a main part according to an embodiment of the present invention. In the figure, reference numeral 1 denotes a heat medium collection pipe constituting a heat medium transport circuit. This collecting pipe 1 consists of a main pipe 2 and a plurality of extraction pipes B provided at intervals in the main pipe 2. A bellows 5 is formed on the circumferential body 4 of the main pipe 2 between the tube extraction filters to absorb expansion and contraction caused by heat. A cap 6 which is not provided with an extubation tube 6 and expands and contracts under external pressure is extended to the main pipe 2.

Furthermore, a check valve 7 is provided in the extraction pipe 6 near the main pipe 2, and a valve 8 is provided on the side opposite to the main pipe 2 by passing the check valve 7 as a reference l.
The pipe is connected to various heat radiators. Note that 9 is a pump and 10 is a check valve.

In the above configuration, by pushing or stretching the cap 6, the air pressure inside the collecting pipe 1 increases or decreases, and the function of pushing out the air is achieved. That is, extubation 5a
+ Valve 3a of drain, 3c.

81), when 8C is closed and the heating medium is circulated through the system of the extraction pipe 6d, the air remaining in the pipe is compressed by pressing the cap 6, and is forced out through the valve 8d. On the other hand, when the cap 6 is stretched, the heat medium is pumped into the main pipe 2 by the pump, but this process cannot be repeated and is exhausted. This exhaust operation can remove the air from each system using the collector pipe 1, and is therefore simple. 1. [Effects of the Invention] As described above, this invention causes distortion due to expansion and contraction to occur drastically due to the heat of the heating medium. With the above-mentioned configuration, the collection pipe absorbs air with a bellows, and the air from each system can be discharged in H1 through this collection pipe, so the exhaust operation is simple.

[Brief explanation of drawings]

Figure 1 is a flow diagram of a heat medium transport circuit used for heating.
FIG. 2 is a sectional view of a main part according to an embodiment of the present invention. 2...Main pipe 6...Camper tube...
Pipe removal 7...Check valve 1...Collection pipe 8...Valve 5...Bows patent applicant Toshimaru Takemoto, patent attorney Matsushita Electric Works Co., Ltd. (and others) 2 people) Figure 1 Figure 2

Claims (1)

[Claims] (1) A heat medium transport circuit including a heat medium collection pipe formed by providing a plurality of vent pipes at intervals in a main pipe, in which a bellows is formed on the circumferential body of the main pipe between the vent pipes. At the same time, the main pipe is equipped with a cap that expands and contracts with external pressure without a tube removal,
An exhaust system for a heat medium transport circuit, further comprising a check valve provided on the extracted pipe near the main pipe, and a valve provided on the side opposite to the main pipe with respect to the check valve.