JPH08312998A - Air-conditioning equipment for skating rink - Google Patents

Abstract

PURPOSE: To avoid an increase in cost of energy accompanied by defrosting and reduction in blast quantity for dehumidifing processing and reduce a space and a cost for piping work. CONSTITUTION: A brine supply pipe 11 for dehumidification branches off a brine supply pipe 1 for ice making in a skating rink, which passes near an air conditioner chamber around the skating rink, a cooling pipe 6 for dehumidification is connected to the brine supply pipe 11, a brine return pipe 12 from the cooling pipe 6 for dehumidification is connected to a brine return pipe 2 for ice making in the skating rink, and a pump 5 is provided on either of the brine supply pipe 11 for dehumidification and the brine return pipe 12. A brine passing through the brine supply pipe 1 for ice making in the skating rink is fed at a temperature level, which is free of frost formation, to the cooling pipe 6 for dehumidification, and the brine having undergone temperature up is returned through the brine return pipe 12 to the brine return pipe 2 for ice making in the skating rink.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to dehumidification of air conditioning equipment for indoor skating rinks such as speed skates, figure skates and hockey.

[0002]

2. Description of the Related Art In the operation of air conditioning equipment for indoor skating rinks, when the humidity of the outside air is high or when moisture is generated from a large number of spectators, fog may occur and obstruct the visibility. As a preventive measure against the occurrence of fog, it is effective to dehumidify the indoor air, or to dehumidify the outside air or introduce it while reheating it as necessary to ventilate the room.

[0003]

However, dehumidification cannot be dealt with equipment that cannot be dehumidified and reheated, such as equipment exclusively used for cooling, and dehumidification operation is performed by separately installing a refrigerant pipe or a brine pipe from the heat source machine room. There are the following difficulties in dealing with equipment that is intermittently operated by installing a heater for defrosting.

In order to dehumidify low temperature outside air such as in winter, when the temperature of ordinary cold water (about 7 ° C) is too high to dehumidify, or when a cooling coil for dehumidification having an excessively low temperature is used. In this case, since the coil is frosted, it is necessary to stop the dehumidification at a certain interval and perform a half dehumidifying operation and a half defrosting operation for every two units using a heater. Energy costs will be incurred and the amount of treated air in regular dehumidification operation will be halved.

Further, particularly in a speed skating rink, a plurality of air conditioner rooms are often arranged around the rink because it is wide in plan, and therefore, because of dehumidifying operation which is rarely used, it is more than the heat source machine room. Extensive piping work to each air conditioner room is a wasteful investment in terms of securing space and installation costs.

The object of the present invention is to eliminate the disadvantages of the above-mentioned conventional example, to avoid an increase in energy cost and dehumidification processing air flow associated with defrosting, and to reduce the space and cost of piping work. To provide air conditioning equipment.

[0007]

In order to achieve the above object, the present invention firstly branches a dehumidifying brine supply pipe from a link ice making brine supply pipe passing near an air conditioner room around a skating rink. , Connect the dehumidifying cooling coil to this brine supply pipe, connect the brine retan pipe from the dehumidifying cooling coil to the link ice making brine retan pipe, and pump to either of these dehumidifying brine supply pipe or brine retan pipe. By supplying the brine passing through the link ice-making brine supply pipe to the dehumidifying cooling coil by a pump at a temperature level that does not frost the coil, returning the heated brine to the link ice-making brine retan pipe by the brine retan pipe. Second, bypass the dehumidifying brine supply pipe and brine retentate pipe on the way. The circulation circuit for the dehumidification cooling coil is connected by a gas pipe, and the pump is a circulation pump provided in this circulation circuit. Thirdly, the circulation circuit has a plurality of dehumidification cooling coils for one circulation pump. The gist of the invention is to form a parallel circuit for connecting.

[0008]

According to the first aspect of the present invention, since the dehumidifying brine flows through the dehumidifying cooling coil at a temperature level that does not cause frost formation on the dehumidifying cooling coil, stable dehumidification in the link can be achieved. It is possible to prevent the occurrence of fog. Further, since there is no need for defrosting, it is possible to avoid energy loss and reduction of dehumidification processing air volume.

Further, the brine supply pipe for dehumidification is constructed by branching from the brine supply pipe for link ice making, and the brine is sent to the cooling coil for dehumidification by this brine supply pipe, and the brine heated after the dehumidification treatment is brined. Since the return pipe is returned to and integrated with the brine ice return pipe for link ice making, it is possible to suppress the space and cost loss due to the pipe work without having to perform the pipe work endlessly from the heat source machine room.

According to the second aspect of the present invention, the brine is pumped to the cooling coil for dehumidification at the temperature of the brine,
When the defrosting operation can be continued, the brine supply pipe for dehumidification and the brine retentate pipe are connected by a bypass pipe in the middle to perform this as a circulation circuit for the cooling coil for dehumidification. In this way, the brine can be circulated at a certain ratio and heated to about -2 ° C before use.

According to the third aspect of the present invention, the circulation circuit is formed as a parallel circuit for connecting a plurality of dehumidifying cooling coils, so that one pump can be used as a circulation pump. The equipment can be simplified.

[0012]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a piping system diagram showing a first embodiment of an air conditioner for a skating rink according to the present invention. In FIG. 1, 1 is a link ice supply brine supply pipe passing near the air conditioner room around the link and 2 is a link ice make brine. It is a letter pipe.

A dehumidifying brine supply pipe 11 is provided so as to be branched from the link ice making brine supply pipe 1, and the dehumidifying brine supply pipe 11 is provided with an electric valve 3a, an electric valve 3e, and a pump 5. Further, the tip thereof is connected to the inflow side of the dehumidifying cooling coil 6 provided inside the air conditioner 9.

Further, an electric valve 3b is provided in the brine retentate pipe 12 connected to the outflow side of the dehumidifying cooling coil 6 and is connected to the link ice making brine retentive pipe 2.

The dehumidifying brine supply pipe 11 and the brine retentate pipe 12 are connected by a bypass pipe 13 on the way to form a circulation circuit for the dehumidification cooling coil 6, and the pump 5 is a circulation pump provided in this circulation circuit. Made available as.

A temperature control coil 8 as a temperature controller is also provided inside the air conditioner 9, and a pipe for introducing dedicated hot water or cold water is connected to the temperature control coil 8 as a temperature control pipe to control the temperature. A motor-operated valve 3f is provided on the outflow side of the tuning coil 8.

By the way, in the speed skating rink using the brine, the supply and the letter may be exchanged with each other in a certain time in order to make the ice making temperature uniform. In order to deal with this, the brine-return pipe 12 is branched and the branch pipe 12a
Is connected to the link ice-making brine supply pipe 1, and the brine supply pipe 11 is also branched.
a was connected to the link ice-making brine-return pipe 2.

As a result, the brine return pipe 12 can be used as a brine supply pipe, and the brine supply pipe 11 can be used as a brine return pipe.
A motor-operated valve 3c is provided in a, and a motor-operated valve 3d is provided in the branch pipe 12a. The valve action of the motor-operated valves 3a, 3c and 3b, 3d makes it possible to switch between the letter pipe and the supply pipe.

A temperature detector 7a is provided on the outflow side of the dehumidifying cooling coil 6 for controlling the dehumidifying temperature for controlling the motor-operated valve 3e provided immediately before the pump 5, and the surface of the dehumidifying cooling coil 6 is provided. For temperature compensation, a temperature detector 7b is provided inside the air conditioner 9 near the surface of the coil, and
A temperature detector 7c is provided on the discharge side of the air conditioner 9 for controlling the blowout temperature from the air conditioner.

Explaining the operation method, the dehumidification during the use of the link in the winter season is -12 ° C for the brine that passes through the link ice-making brine supply pipe 1. The brine temperature immediately after the motor-operated valve 3e on the inlet side of the pump 5 is also set to -12 ° C by taking it into the supply pipe 11.

This brine passes through the pump 5, the electric valve 3e is closed, and the brine supply pipe for dehumidification is supplied.
By connecting the 11 and the brine retentate pipe 12 with the bypass pipe 13 on the way and circulating them to the dehumidifying cooling coil 6,
The temperature is set to about −2 ° C., which is a temperature level at which no frost is formed on the coil, and the coil is sent to the cooling coil 6 for dehumidification so that the outdoor air is dehumidified.

The temperature-raised brine after the dehumidifying action is returned to the link ice-making brine-return pipe 2 through the brine-return pipe 12 at 1 ° C.

As described above, when the supply and the letter are exchanged in a certain period of time in order to make the ice making temperature uniform, the branch pipe 12a can be switched by appropriately switching the motor operated valves 3a, 3b, 3c, 3d. Is connected to the link ice-making brine supply pipe 1, and the branch pipe 11a is connected to the link ice-making brine retentate pipe 2 to make the brine supply pipe.
Swap the action of 11 and brine-return pipe 12.

Further, the temperature on the outflow side of the dehumidifying cooling coil 6 is monitored by the temperature detector 7a, and the opening degree of the motor-operated valve 3e is adjusted so that the temperature is kept at 1 ° C. to adjust the bypass amount.

The temperature control coil 8 of the temperature controller has a temperature of 50 ° C.
A motor-operated valve 3f provided on the outflow side of the temperature adjusting coil 8 and a temperature detector 7c provided on the discharge side of the air conditioner 9
Depending on the temperature, a preferable blowing temperature, for example, about 15 ° C is set and controlled.

By these setting operations, the air in the link is dehumidified and does not get damp, and the dehumidifying cooling coil 6 can be stably dehumidified without frosting.

When the link is not used even in the winter and when the link is not used in the summer, all the motor operated valves 3a, 3b, 3c and 3d are used.
Turn it OFF and do not perform dehumidification operation control.

FIG. 2 shows another embodiment of the present invention.
At the end of the circulation circuit in which the dehumidifying brine supply pipe 11 and the brine retentate pipe 12 are connected by a bypass pipe 13 on the way, a plurality of air conditioners 9, that is, dehumidifying cooling coils 6 are provided for one pump 5. It was formed as a parallel circuit connected in parallel.

In the present embodiment, one pump 5 can be shared as a circulation pump for the dehumidifying cooling coil 6, and the equipment can be further simplified.

[0030]

As described above, the air-conditioning equipment for the skating rink of the present invention can stably dehumidify the inside of the rink, so that it is possible to prevent the occurrence of fog and obstruct the view, and there is no need for defrosting. Therefore, it is possible to avoid energy loss and reduction of dehumidification processing air volume.

The brine supply pipe for dehumidification is constructed by branching from the brine supply pipe for link ice making, and the brine is sent to the cooling coil for dehumidification by this brine supply pipe, and the brine heated after the dehumidification treatment is brined. Since the return pipe is returned to the link ice brine brine return pipe and integrated, the pipe work is not extended from the heat source machine room, and the space and cost loss due to the pipe work can be suppressed.

[Brief description of drawings]

FIG. 1 is a piping system diagram showing a first embodiment of an air conditioning facility for a skating rink of the present invention.

FIG. 2 is a piping system diagram showing a second embodiment of the skating rink air conditioning equipment of the present invention.

[Explanation of symbols]

1 ... Link ice-making brine supply pipe 2 ... Link ice-making brine retentate pipe 3a to 3f ... Motorized valve 5 ... Circulation pump 6 ... Dehumidifying cooling coil 7a-7c ... Temperature detector 8 ... Temperature control coil 9 ... Air conditioner 11 ... Brine supply pipe 11a ... Branch pipe 12 ... Brine retentate pipe 12a ... Branch pipe 13 ... Bypass pipe

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshizo Omae 1-41-13 Kanegadani, Asahi-ku, Yokohama-shi, Kanagawa (72) Inventor Michihiko Nakamura 28-1, Takada, Nagano, Nagano Prefecture Flats Hojo 202 ( 72) Inventor Kayo Makoto Kashima Construction Co., Ltd., Moto Akasaka 1-2-7, Minato-ku, Tokyo (72) Inventor Junichi Kondo Moto Akasaka 1-2-7, Kamo Construction, Minato-ku, Tokyo (72) Inventor Tohwa Ito 4-16-12 Sakae, Naka-ku, Nagoya-shi, Aichi Daidan Co., Ltd. Nagoya branch office (72) Inventor Toru Goda 3-9-14 Kudan Minami C & M Building 9-9 Minami Minami, Chiyoda-ku, Tokyo 7F Daidan Co., Ltd. Technology Center

Claims (3)

[Claims] 1. A dehumidifying brine supply pipe is branched from a link ice-making brine supply pipe passing near an air conditioner room around a skating rink, and a dehumidifying cooling coil is connected to the brine supply pipe. The brine retentate pipe from the link is connected to the link ice-making brine retentate pipe, and a pump is installed in either the dehumidifying brine supply pipe or the brine retentate pipe, and the brine passing through the link ice-making brine supply pipe is turned into a coil by the pump. An air-conditioning system for skating rinks, which is characterized in that it is sent to a cooling coil for dehumidification at a temperature level that does not cause frosting, and the brine that has risen in temperature is returned to the brine-retaining pipe for ice-making in the link by means of a brine-retaining pipe. 2. The dehumidifying brine supply pipe and the brine retentate pipe are connected by a bypass pipe in the middle to form a circulation circuit for the dehumidification cooling coil, and the pump is a circulation pump provided in this circulation circuit. Air conditioning equipment for skating rinks. 3. The air-conditioning system for a skating rink according to claim 2, wherein the circulation circuit is formed as a parallel circuit in which a plurality of cooling coils for dehumidification are connected to one circulation pump.