JP2013095579A - Geothermal heat recovery type elevator air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner which supplies air subjected to air conditioning into a hoistway and a car without using energy for driving a compressor etc.SOLUTION: Air in a hoistway 1 is subjected to air conditioning by a heat exchange means 6 installed in underground using underground temperature, wherein the air-conditioned air is blown into the hoistway 1 for the air conditioning.

Description

The present invention relates to an energy-saving demand for air-conditioning equipment, and relates to a ground heat recovery type elevator air-conditioning system that performs air conditioning in a passenger car and a hoistway using stable underground heat in the underground.

For the purpose of air conditioning so as to make the elevator car comfortable, installation of elevator air conditioners equipped with an air conditioning unit that supplies air conditioned in the elevator car has become widespread.

  Here, regarding an air conditioner for an elevator, for example, cooling, a compressor that compresses the refrigerant, a condenser that cools the refrigerant vapor that has become high temperature due to the compression, air in the hoistway is cooled by the refrigerant, and cold air is applied. There is known an apparatus (Patent Document 1) provided with an air-cooling unit composed of an evaporator fed into a car and a fan that circulates air to the condenser and the compressor (Patent Document 1). A duct that guides the cool air blown from the cooling unit is provided between the air passage and a ventilator that sucks air in the hoistway from above and blows it downward is provided at a predetermined height of the hoistway. The thing (patent document 2) is known.

JP 2001-335264 A (FIGS. 1 and 2) JP-A-5-193863 (paragraphs 0003 to 0014, FIG. 1)

  However, in any air conditioner, for example, a device for obtaining cold air such as a compressor or a fan is driven, and the obtained cold air is sent into a car or a hoistway to control air conditioning in the hoistway and the car. In order to do so, power energy is required to drive the compressor, fan, and the like. On the other hand, in order to meet the recent energy saving demand for building facilities, it has been necessary to reduce the electric power energy for driving the compressor, the fan and the like.

  The objective of this invention is providing the air conditioner which solves said subject and performs the air conditioning in the hoistway and the elevator car excellent in the reduction effect of the power energy which an air conditioner consumes.

  In order to solve the above problems, the present invention provides an air conditioner for air conditioning an elevator car and a hoistway, wherein the air conditioner is installed in the ground from an insertion hole provided in a pit of the hoistway and is taken from geothermal heat. A heat exchanging means for radiating heat is provided, and the heat exchanging means is used as a heat radiating source.

  According to the above configuration, since the heat exchanging means that is installed in the ground and collects and dissipates heat from the geothermal heat is used as the heat dissipating source, the evaporator, the condenser, and the compression required for cooling and heating the air in the conventional air conditioner The elevator car and the hoistway can be air-conditioned without requiring energy consumption to drive the machine, and air-conditioning is performed only with the electric energy consumed by the fan for sending air to the heat exchange means. Is possible.

  As described above, since the present invention adopts a heat-dissipating method, it is possible to air-condition only with the electric energy consumed by the fan for sending air to the heat exchanging means, and the elevator car and the hoistway are air-conditioned. Therefore, energy consumption can be reduced.

1 is a system configuration diagram of an apparatus that air-conditions an elevator car and a hoistway at a substantially uniform temperature in the vertical direction using stable underground heat in an embodiment of the present invention. A cooling unit consisting of a compressor that compresses the refrigerant, a condenser that cools the refrigerant vapor that has become hot due to compression, and an evaporator that cools the air in the hoistway using the refrigerant and sends cold air to the car is installed at the top of the car It is a system block diagram of the installed conventional air conditioner. A duct for guiding cool air blown from the cooling unit is provided between the machine room and the hoistway, and an air blower that sucks air in the hoistway from above and blows it downward is set at a predetermined height of the hoistway. It is a system block diagram of the conventional air conditioning apparatus which consists of a structure provided. It is a flowchart which shows operation | movement of the temperature comparison means in one Embodiment of this invention shown in FIG.

  In general, the underground of 4 to 5 m underground maintains a stable temperature around 18 degrees Celsius throughout the year, so it is cooler than the outside air in the summer and warmer than the outside in the winter.

  Therefore, in this embodiment, by providing heat exchange means in the underground 4-5 m underground, the temperature in the tower is guided to the heat exchange means, and the conditioned air is returned to the tower. The hoistway and the car are air-conditioned with lower energy consumption than conventional air-conditioning means.

  FIG. 1 shows a configuration diagram for realizing an embodiment of the present invention. In this structure, the heat exchange means 6 comprised of the heat exchange means outer tube 61 and the heat exchange means inner tube 62 is embedded in the bottom of the pit 3 of the elevator. The heat exchange means outer tube 61 is a cylinder made of a material such as aluminum or vinyl chloride, and the bottom is closed. An example of the dimensions of the heat exchange means outer tube 61 is a diameter of 25 cm and a length of 6 m. The heat exchange means inner tube 62 is a cylinder made of a material such as aluminum or vinyl chloride, like the heat exchange means outer tube 61, and is inserted into the heat exchange means outer tube 61.

At the bottom of the heat exchange means 6, a passage 63 is provided in the heat exchange means inner tube 62 so that the air inside the heat exchange means outer tube 61 can flow into the heat exchange means inner tube 62. By adopting such a configuration, the air 5 taken in from the hoistway 1 by the blower 4 and sent from the inside of the heat exchange means outer tube 61 and the outside of the heat exchange means inner tube 62 is formed in a cylindrical shape. When the air is introduced into the space, the air descends the cylindrical space, and the temperature of the air is adjusted by the temperature of the ground outside the heat exchange means outer tube 61 (constant at about 18 ° C.). . When the temperature-adjusted air reaches the bottom of the heat exchanger outer tube 62, the air enters the heat exchanger inner tube 62 through the passage 63, and the heat exchanger inner tube 62 faces upward. Move. Therefore, the temperature-controlled air 7 is discharged from the upper end of the heat exchange means inner tube 62.

  Next, equipment used for circulating the temperature-controlled air 7 discharged from the heat exchanging means 6 in the hoistway 1 will be described. The air blowing means 4 sucks air in the vicinity of the pit 3 of the hoistway 1 and sends the air 5 to the heat exchange means 6. Temperature-controlled air 7 discharged from the heat exchange means 6 is sent to an air conditioning duct 8 installed in the hoistway 1 from the pit 3 to the ceiling of the hoistway 1. In the air conditioning duct 8, the lower discharge port 9 provided near the pit, the upper discharge port 10 installed near the ceiling, and the air 7 sent from the heat exchanging means 6 are supplied to the lower discharge port 9 or the upper discharge port. A discharge port switching valve 11 having a function of directing to 10 is provided. Further, a temperature-controlled air temperature sensor 12 that measures the temperature Tc of the temperature-controlled air 7 is inside the air conditioning duct 8 before the discharge port switching valve 11, and the temperature Ts in the hoistway 1 is stored in the hoistway 1. A tower temperature sensor 13 to be measured is provided. The installation temperature of the temperature sensor 13 in the tower is installed in the vicinity of an intermediate point in the range in which the car 2 moves. The discharge port switching valve 11 is provided with temperature comparison means 14 having a function of controlling the operation of the discharge port switching valve 11 by inputting the temperature TC of the temperature-controlled air 7 and the temperature Ts in the hoistway 1. It has been.

  Next, the operation of the temperature comparison means 14 will be described with reference to FIG.

  First, the temperature comparison means 14 measures the temperature Tc of the air 7 conditioned using the temperature-controlled air sensor 12 (step S1). Next, the said temperature comparison means 14 measures the temperature TS in the hoistway 1 using the tower inside temperature sensor 13 (procedure S2). Next, the temperature comparison means 14 compares the temperature Ts in the hoistway 1 measured in the steps S1 and S2 with the temperature Tc of the temperature-controlled air 7 (step S3).

  As a result of the comparison, if the temperature Tc of the air 7 adjusted from the temperature Ts in the hoistway 1 is lower or the same, the temperature comparison means 14 causes the air 7 whose temperature is adjusted to the discharge port switching valve 11 to be discharged from the upper side. Control is performed so as to go to the exit 10 (step S4). As a result, when the temperature Tc of the temperature-controlled air 7 is lower than the temperature Ts in the hoistway 1, the density of the temperature-controlled air 7 is higher than the density of the air in the hoistway 1. The air 7 thus made flows down in the hoistway 1. Further, when the temperature Ts in the hoistway 1 and the temperature Tc of the conditioned air 7 are the same, the pit 3 side becomes negative pressure by the blowing means 4 provided in the pit 3, so that the temperature-controlled air is similarly adjusted. 7 flows down in the hoistway 1.

  On the other hand, if the temperature Tc of the temperature-controlled air 7 is higher than the temperature Ts in the hoistway 1 as a result of the comparison, the temperature comparison means 14 indicates that the temperature-controlled air 7 is discharged from the lower part of the discharge switching valve 11. Control is performed so as to go to the exit 9 (step S5). As a result, when the temperature Tc of the temperature-controlled air 7 is higher than the temperature Ts in the hoistway 1, the density of the temperature-controlled air 7 is lower than the density of the air in the hoistway 1. The generated air 7 flows up in the hoistway 1 and moves to the upper part of the hoistway 1.

As a result, the air in the hoistway 1 that has not been temperature-controlled moves downward in the hoistway 1 and is therefore taken in by the blower 4 provided in the pit 3 and sent to the heat exchanging means 6.

  Therefore, the temperature comparison means 14 performs the operations from step S1 to steps S4 and S5, thereby grasping the relationship between the temperature Ts in the hoistway 1 and the temperature Tc of the conditioned air 7, and the hoistway 1 Since the temperature-controlled air 7 can be controlled so as to be directed to the upper discharge port 10 and the lower discharge port 9 that are optimal for circulation, the hoistway 1 and the car 2 are almost all over the vertical direction. Air conditioning can be performed at a uniform temperature.

  Here, in the configuration for realizing the above-described embodiment, all of the constituent devices are constituted by the heat exchange means 6 embedded in the hoistway 1, on the pit 3, and underground of the pit 3. As a result, the elevator air conditioning system of the present embodiment can be realized only with equipment installed only on the site area occupied by the hoistway 1 and uses a space such as a machine room other than the site area occupied by the hoistway 1. do not do. Therefore, it is possible to minimize the site area necessary for installing the air conditioning system.

DESCRIPTION OF SYMBOLS 1 Hoistway 2 Passenger car 3 Pit 4 Blowing means 5 Tower air sent by the blowing means 6 Heat exchange means 61 Heat exchange means outer tube 62 Heat exchange means inner tube 63 Passage 7 provided in heat exchange means inner tube Temperature control Air 8 Air-conditioning duct 9 Lower discharge port 10 Upper discharge port 11 Discharge port switching valve 12 Temperature control air temperature sensor 13 Air temperature sensor 14 Air temperature comparison means 20 Air conditioner 21 installed on the car 21 Installed on the car Air blow from the air-conditioning apparatus 22 Hoisting machine 23 Counterweight 31 Air duct 32 in the tower 32 Air in the tower 33 Cooling unit 34 Cold air duct 35 Temperature-controlled air

Claims (1)

In the air conditioner that air-conditions the elevator car and the hoistway,
The air conditioner is installed in the ground through an insertion hole provided in a pit of a hoistway, and includes a heat exchanging unit that collects and dissipates heat from geothermal heat, and the heat exchanging unit is used as a heat dissipating source. Car and hoistway air conditioner.

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