JP2003048677A - Air conditioner for car of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner for car of an elevator capable of air- conditioning the inside of the car of the elevator without requiring a drainage facility. SOLUTION: A body unit 4 having a compressor 11, a condenser 12, an expansion means 13, an evaporator 14, a first fan 15, a drain receiver 16, and a second fan 17 is installed above the car, a duct for leading air from the body unit 4 into the car is installed, and a heater unit is disposed on the car side of the duct. Thus drain water is evaporated by the operation of the second fan 17 during cooling, and the evaporated water is fed into a hoistway and scattered. Also, when the compressor 11 is not operated and drain water is not produced during heating, air fed into the car through the duct is heated by the heater unit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator car air conditioner, and more particularly to an elevator car air conditioner suitable for maintaining an appropriate temperature in the elevator car.

[0002]

2. Description of the Related Art In recent years, installation of high-floor elevators has been increasing with the increase in the number of buildings and buildings and the increase in scale. These elevators not only allow the passengers of the car to move to the intended floor safely and quickly, but also improve the comfort of the passengers at that time, especially the optimum temperature inside the car. It is important to maintain a comfortable temperature inside the car throughout the year, and along with this, air conditioners for elevator cars that cool, heat, or heat the inside of the elevator car. The need for is increasing.

By the way, when the above-mentioned conventional car air-conditioning system is operated, water in the air is condensed to generate drain water. Therefore, a drain tank is provided in the car to collect a predetermined amount of drain water. It is necessary to drive the car to the bottom of the hoistway and drain the drain water into the pit. For this reason, not only the drain processing means in the pit is very expensive, but also a special operation is required to drain the drain water, which is also a problem in terms of cost.

As one means for solving such a conventional problem, for example, as described in Japanese Patent Application Laid-Open No. 8-268671, a refrigeration cycle comprising a compressor, a condenser and an evaporator on a car. It is also proposed that an air conditioner equipped with a blower is provided, and the drain water generated in the evaporator is evaporated into the hoistway by the evaporation means provided on the condenser side. In such a conventional technique, since the evaporation means, the water supply pipe connecting the drain container and the evaporator, the pump and the like are required, there is a problem that not only the air conditioner becomes large but also the cost becomes high.

Further, as a means for eliminating the increase in size and cost of the elevator car air conditioner disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 8-268671, Japanese Patent Application No.
No. 00-148829, a drain receiver for storing drain water generated from the evaporator is provided, and when the drain water is stored in the drain receiver, the lower part of the blower is in contact with the drain water. The applicant of the present invention has proposed that the drain water is scattered and evaporated in the condenser to reduce the size and cost.

[0006]

However, the above-mentioned prior art is described in Japanese Patent Application No. 2000-148829 and an air conditioner for an elevator car disclosed in JP-A-8-268671. There is a problem in that the inside of the elevator car cannot be heated because both the elevator car air conditioner and the elevator car air conditioner are dedicated to cooling.

Moreover, Japanese Patent Application No. 2000-148
Although the elevator car air conditioner described in No. 829 can be downsized and the cost can be reduced, due to the structure, if drain water that exceeds the drain evaporation capacity of the condenser is generated in the evaporator, There is a problem that drain water overflows from a drain container provided under the evaporator and the condenser, and the top of the car gets wet.

The present invention has been made in view of the circumstances in the prior art as described above, and its first object is to perform heating or cooling / heating of a car without requiring drain drainage equipment. An object of the present invention is to provide an air conditioner for an elevator car.

A second object of the present invention is to provide an elevator car air conditioner in which an existing elevator can be easily modified so as to heat or cool or heat the inside of the car.

[0010]

In order to achieve the first object, the invention according to claim 1 of the present invention is to install a main body unit above a car and to install a vapor of a refrigerant in the main body unit. Compressor for sending out, the condenser that cools the vapor of the refrigerant from this compressor to liquid, and lowers the pressure of the refrigerant so that the liquid of the refrigerant obtained in this condenser is easily evaporated The expansion means, the liquid of the refrigerant sent from this expansion means, while taking away the ambient heat to evaporate, vaporizer of the evaporated refrigerant vapor to the compressor, and the air in the car A first fan that cools the evaporator by blowing it and sends the cooled air into the car, a drain receiver that stores drain water generated from the evaporator, and a drain water in the drain receiver Blow on the condenser In an elevator car air-conditioning system including at least a second fan for feeding the evaporated drain water into the hoistway after the evaporation, the air conditioner for the car of the elevator is provided between the main body unit and the top of the car. First
Is provided with a duct for guiding the air sent by the fan into the car, and a heater unit is provided on the car side of the duct, while rotating the first fan in a state where the compressor is not operated. By energizing the heater unit, the air sent from the duct into the car is warmed.

In the invention according to claim 1 of the present invention thus constructed, when heating the inside of the car, the first fan is rotated while the compressor is not operated, and the duct is installed on the car side of the duct. Since the air sent into the car from the duct is warmed by energizing the heater unit provided, the compressor does not operate at this time and drain water is not generated in the evaporator. Further, since the heater unit arranged on the car side of the duct warms the air flowing from the duct into the car, it is possible to prevent the duct from overheating and be safe. When the inside of the car is cooled, the drain water generated in the evaporator is stored in the drain receiver, and the drain water is blown to the condenser by the second fan to be evaporated, and then the evaporated water is evaporated. Since the drain water is sent into the hoistway and scattered, it is not necessary to install a drain drainage facility. This allows heating or cooling / heating of the car without the need for drain drainage.

The invention according to claim 2 of the present invention is the invention according to claim 1, wherein the heat source of the heater unit comprises a positive temperature coefficient thermistor.

In the invention according to claim 2 of the present invention thus constructed, when the inside of the car is heated, when the temperature of the positive temperature coefficient thermistor itself rises above a predetermined temperature due to heat generation of the positive temperature coefficient thermistor which warms the air in the duct. The resistance value of the PTC thermistor itself rises rapidly, the value of the current flowing through the PTC thermistor is suppressed low, and the temperature of the PTC thermistor itself drops. As a result, the PTC thermistor body of the heater unit and the surroundings can be prevented from being overheated, which is safe.

According to a third aspect of the present invention, in addition to the first or second aspect of the invention, the heater unit is detachably attached to the duct.

In the invention according to claim 3 of the present invention thus constructed, when the heater unit or the duct fails, the heater unit is detached from the duct to replace or inspect the heater unit or the duct. Maintenance work can be done easily.

The invention according to claim 4 of the present invention is the invention according to any one of claims 1 to 3, wherein the main body unit is mounted on a crosshead disposed above the car. It is configured to be movable in the front-back direction.

In the invention according to claim 4 of the present invention thus constructed, when performing maintenance work on the car, the main body unit is mounted on the crosshead in the front-back direction of the car so that the maintenance work is easy. It is possible to secure a working space by moving the car to a car, thereby improving maintenance work efficiency and safety on the car. Also, when using the ceiling escape after a car trap accident occurs, move the main unit in the front-back direction of the car so that it does not interfere with passengers' escape from the ceiling escape. You can

According to a fifth aspect of the present invention, in the invention according to the fourth aspect, a plurality of height holding brackets are erected on the crosshead, and upper ends of these height holding brackets are provided. Each of the parts is provided with a horizontal holding table, and the main body unit is provided to the horizontal holding table so as to be movable in the front-rear direction of the car.

In the invention according to claim 5 of the present invention thus configured, since the main body unit is mounted on the crosshead via the height holding bracket and the horizontal holding base, the safety fence provided on the car is protected. The main body unit can be provided at a position equivalent to the height or at a position higher than the height, which allows the maintenance worker to easily perform the maintenance work without bending over when performing maintenance work on the main body unit. .

According to a sixth aspect of the present invention, in the invention according to any one of the first to fifth aspects, the duct is composed of a flexible and flame-retardant hose.

In the invention according to claim 6 of the present invention thus constructed, when the main body unit is moved in the longitudinal direction of the car on the crosshead, the hose forming the duct has flexibility and expands and contracts. Therefore, the main body unit can be moved smoothly. Even if the heater unit becomes abnormally overheated due to a failure of the heater unit, since the hose forming the duct has flame retardance, it is possible to prevent the duct from burning.

In order to achieve the second object, the invention according to claim 7 of the present invention is the invention according to any one of claims 1 to 6, wherein the end portion of the duct on the car side is
It was configured to connect to the outlet for the existing ventilation fan provided in this car.

In the invention according to claim 7 of the present invention configured as described above, since the duct is connected to the car by utilizing the existing ventilation fan outlet provided in the car, the duct is attached. Since it is not necessary to newly provide the opening in the car, the remodeling work for remodeling into an elevator with an air conditioner becomes simple, and the time for the remodeling work can be shortened. As a result, the existing elevator can be easily modified to heat or cool the inside of the car.

Further, the invention according to claim 8 of the present invention is the invention according to any one of claims 2 to 7, wherein the heater units are arranged in a plurality of rows by a heater case and a supporting member in the heater case. A plurality of sets of positive temperature coefficient thermistors, a temperature fuse provided on the support member, and a first packing made of a flame-retardant heat insulating material for maintaining airtightness between the duct and the inlet of the heater unit. And a second packing made of a flame-retardant heat insulating material for maintaining airtightness between the outlet of the heater unit and the car side, and a fitting for attaching the heater case to the existing ventilation fan outlet. It consisted of

In the invention according to claim 8 of the present invention thus constructed, the height of the heater case can be lowered by arranging the positive temperature coefficient thermistors, which are heat sources of the heater unit, in a plurality of rows. Since the heater unit can be a thin heater unit, the heater unit can be placed on the car without being bulky.

The invention according to claim 9 of the present invention is the invention according to any one of claims 1 to 8, wherein after the existing ventilation fan is removed from the air outlet provided on the car, the existing ventilation is removed. The heater unit is attached to the air outlet by using a fan attachment member.

In the invention according to claim 9 of the present invention thus constructed, after removing the existing ventilation fan from the air outlet provided in the car, a heater unit is attached to the air outlet at the attachment member for the existing ventilation fan. Since it is mounted by using, it is not necessary to fabricate a new mounting member to mount the heater unit on the car side or to attach the new mounting member to the car, and remodeling workability Can be improved.

The invention according to claim 10 of the present invention is
The invention according to any one of claims 2 to 9, wherein the heater unit is provided in the heater case, three sets of positive temperature coefficient thermistors arranged in three rows in the heater case by a support member, and the support member. Thermal fuse,
A first packing that maintains airtightness between the duct and the inlet of the heater unit; a second packing that maintains airtightness between the outlet of the heater unit and the car side; The case is composed of a mounting bracket that is attached to an existing ventilation fan outlet, and the positive temperature coefficient thermistor is detachably attached to the heater case.

In the invention according to claim 10 of the present invention thus constructed, the characteristic thermistor can be removed from the heater case, so that maintenance work such as replacement, repair, disassembly and cleaning of the heater unit and the characteristic thermistor becomes easy. .

The invention according to claim 11 of the present invention is
In the invention according to any one of claims 1 to 10, the heater unit is detachably attached to the duct and the existing ventilation fan outlet.

According to the eleventh aspect of the present invention thus constructed, since the heater unit can be removed from the duct and the car, maintenance work such as replacement, repair, disassembly and cleaning of the heater unit and the characteristic thermistor is easy. Becomes

The invention according to claim 12 of the present invention is
In the invention according to any one of claims 8 to 11, when the ambient temperature in the heater case of the heater unit reaches a predetermined temperature, the temperature fuse is blown to stop energizing the positive temperature coefficient thermistor.

According to the twelfth aspect of the present invention thus constituted, when the ambient temperature inside the heater case of the heater unit reaches a predetermined temperature, the power supply to the PTC thermistor is cut off, so that the heater unit is overheated. Is safe and can be prevented.

The invention according to claim 13 of the present invention is
In the invention according to any one of claims 8 to 12, when the positive temperature coefficient thermistor is brought into direct contact with the positive temperature coefficient thermistor and a predetermined abnormal temperature is reached, energization of the positive temperature coefficient thermistor is stopped, and thereafter, the positive temperature coefficient thermistor is stopped. A thermal protector is provided for returning the power to the positive temperature coefficient thermistor when the temperature of the temperature coefficient thermistor drops to a predetermined safety temperature.

According to the thirteenth aspect of the present invention thus constructed, when the temperature of the PTC thermistor reaches a predetermined abnormal temperature, the thermal protector stops the energization of the PTC thermistor, and thereafter, the PTC thermistor. When the temperature of 1 has decreased to a predetermined safe temperature, the power supply to the PTC thermistor is restored, so that the temperature of the PTC thermistor can be maintained within a certain range.

The invention according to claim 14 of the present invention is
In the invention according to any one of claims 8 to 13, the power supply for energizing the positive temperature coefficient thermistor of the heater unit and the control power supply for controlling the car are separately provided.

According to the fourteenth aspect of the present invention thus constructed, the control power supply for controlling the car is provided separately from the power supply for energizing the positive temperature coefficient thermistor of the heater unit. It does not adversely affect the operation control of the.

The invention according to claim 15 of the present invention is
The invention according to any one of claims 1 to 14, wherein the main body unit is cooled by a first inlet port that receives air in the hoistway or a car by the operation of the first fan, and cooling by the evaporator. A first outlet for sending the generated air to the duct, a second inlet for receiving the air in the hoistway by the operation of the second fan, and the air containing the evaporated drain water for the elevating and lowering. And a second outflow port for feeding into the passage, and a dust removing filter is detachably attached to at least one of the first inflow port and the first outflow port, and the second inflow port and the second outflow port are provided. Another dust removing filter is detachably provided on at least one of the two outflow ports.

In the fifteenth aspect of the present invention thus constructed, the air in the hoistway or the car is received through the first inlet by the operation of the first fan, and the evaporator is also provided. The air cooled by is sent to the duct through the first outlet. Further, the air in the hoistway is received through the second inflow port by the operation of the second fan, and the air including the drain water evaporated by the heat of the condenser is passed through the second outflow port and the hoistway. Is sent in. At this time, even if dust such as cotton dust flows into the main unit together with the air in the hoistway, the dust is removed by the dust removal filter. It can prevent you from returning to the street. Further, by removing the dust removing filter from the main body unit and washing or brushing the dust removing filter, the dust attached to the dust removing filter can be easily removed.

In order to achieve the first object, the invention according to claim 16 of the present invention is to install a main body unit above the car and compress the vapor of the refrigerant into the main body unit. A compressor that sends out, a condenser that cools the vapor of the refrigerant from this compressor into a liquid, and an expansion means that lowers the pressure of the refrigerant so that the liquid of the refrigerant obtained in this condenser is easily evaporated, The refrigerant liquid sent out from the expansion means takes away ambient heat to evaporate,
An evaporator that guides the vapor of the evaporated refrigerant to the compressor,
A first fan that blows the air in the car to the evaporator to cool it and sends the cooled air into the car, a drain receiver that stores drain water generated from the evaporator, and a drain for this. An air conditioner for a car of an elevator, comprising at least a second fan that blows the drain water in the receiver onto the condenser to evaporate the drain water and then sends the evaporated drain water into the hoistway. A duct for guiding the air sent by the first fan into the car is provided between the car and the car, and a heater unit is arranged on the car side of the duct to prevent the compressor from operating. In this state, by energizing the heater unit while rotating the first fan, the air sent from the duct into the car is warmed. Both were from the duct by rotation of the first fan air cooled by the evaporator by operating the compressor in a state in which no energizing the heater unit configured to feed into the passenger in the car.

According to the sixteenth aspect of the present invention thus constructed, when cooling the inside of the car, the air cooled by the evaporator is removed by operating the compressor without energizing the heater unit. By the rotation of the first fan, it is sent from the duct into the car, the drain water generated in the evaporator at that time is stored in the drain receiver, and after this drain water is blown to the condenser by the second fan to evaporate. Since the evaporated drain water is sent into the hoistway and scattered, there is no need to generate drain water that exceeds the evaporation capacity of the condenser, and drain water does not leak from the drain container. It becomes unnecessary to provide it. On the other hand, when heating the inside of the car, by rotating the first fan without operating the compressor and energizing the heater unit arranged on the car side of the duct, the inside of the car is discharged from the duct. Since the sent air is warmed, the compressor does not operate at this time and drain water is not generated in the evaporator. Further, since the heater unit arranged on the car side of the duct warms the air flowing from the duct into the car, it is possible to prevent the duct from overheating and be safe. As a result, it is possible to cool and heat the inside of the car without the need for drain drainage equipment.

The invention according to claim 17 of the present invention is
In the invention according to claim 16, the compressor and the first
A cooling electric circuit including a fan and an electric motor driving a second fan, and a heating electric circuit including a positive temperature coefficient thermistor and the electric motor. A heating / cooling changeover switch for switching between the cooling electric circuit and the heating electric circuit is provided.

According to the seventeenth aspect of the present invention having the above-described structure, since the power supply box installed on the car is provided with the heating / cooling changeover switch, the heating / cooling switching operation in the car is performed. Since only a maintenance worker can perform the above, it is possible to prevent an elevator passenger from mistakenly turning on and off the heat source of the heater unit.

The invention according to claim 18 of the present invention is
In the invention according to claim 17, the first fan,
After the positive temperature coefficient thermistor of the heating electric circuit is opened,
It is configured to stop after being operated for a predetermined time.

According to the eighteenth aspect of the present invention thus constructed, the first fan operates for a predetermined time after the positive temperature coefficient thermistor of the heating electric circuit is opened, so that the first fan operates. The heater unit can be cooled effectively by blowing air.

The invention according to claim 19 of the present invention is
The invention according to claim 17 or 18, wherein an air-conditioning on / off switch is provided on the operation panel in the car, and the heating / cooling changeover switch of the cooling electric circuit and the heating electric circuit is operated by operating the air-conditioning on / off switch. The selected one was opened or closed.

According to the nineteenth aspect of the present invention thus constructed, the elevator passenger operates the air conditioning on / off switch in the car to turn on / off the heating or cooling of the car. A car air conditioner capable of easy heating and cooling can be obtained.

In order to achieve the second object, the invention according to claim 20 of the present invention is to install a main body unit above the car and compress the refrigerant vapor into the main body unit. A compressor that sends out, a condenser that cools the vapor of the refrigerant from this compressor into a liquid, and an expansion means that lowers the pressure of the refrigerant so that the liquid of the refrigerant obtained in this condenser is easily evaporated, The refrigerant liquid sent out from the expansion means takes away ambient heat to evaporate,
An evaporator that guides the vapor of the evaporated refrigerant to the compressor,
A first fan that blows the air in the car to the evaporator to cool it and sends the cooled air into the car, a drain receiver that stores drain water generated from the evaporator, and a drain for this. A car air conditioner for an elevator, comprising at least a second fan for blowing the drain water in the receiver to the condenser to evaporate it, and then sending the evaporated drain water into the hoistway. A duct for guiding the air sent by the first fan into the car is connected to the inlet of the existing ventilation fan for ventilating, and a heater unit is arranged on the outlet side of the existing ventilation fan, While the compressor is not operating, the first fan is rotated and the heater unit is energized to be fed into the car from the duct. It was configured to warm the air.

In the invention according to claim 20 of the present invention thus constructed, a duct for guiding the air sent by the first fan into the car is connected to the inlet of the existing ventilation fan, and this existing Since the heater unit is arranged on the outlet side of the ventilation fan, the duct can be communicated with the inside of the car without removing the existing ventilation fan, and the modification work time can be shortened. As a result, the existing elevator can be easily modified to heat or cool the inside of the car.

The invention according to claim 21 of the present invention is
In the invention of claim 20, when the first fan is rotated, the existing ventilation fan is also rotated.

According to the twenty-first aspect of the present invention having the above-described structure, a strong wind force can be obtained by rotating the existing ventilation fan when rotating the first fan.

The invention according to claim 22 of the present invention is
The invention according to claim 20 or 21, wherein the heater unit is provided in the elongated heater case, three sets of positive temperature coefficient thermistors arranged in a line by the elongated support member in the elongated heater case, and the elongated support member. A temperature fuse, a first elongated packing for maintaining airtightness between the duct and the inlet of the heater unit, and a second elongate packing for maintaining airtightness between the outlet of the heater unit and the car side. It was made up of a long and narrow packing.

According to the twenty-second aspect of the present invention thus configured, since the heater unit is provided with the elongated heater case, the elongated support member, the first elongated packing and the second elongated packing, the overall shape of the heater unit is improved. Can be made into an elongated tubular shape, and it becomes easy to make the outlet port into the car slender.

[0054]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an elevator car air-conditioning system according to the present invention will be described below with reference to the drawings.

FIG. 1 is an explanatory view of an elevator equipped with an air conditioner for a car according to an embodiment of the present invention, FIG. 2 is a sectional view of a main body unit provided in this embodiment, and FIG. 3 is provided in this embodiment. FIG. 4 is a view of a heater unit for a car to be viewed from the bottom side, FIG. 4 is a sectional view taken along the line AA of the heater unit in FIG. 3, and FIG. 5 shows a state in which the heater unit of FIG. FIG. 6 is a cross-sectional view and FIG. 6 is an electric circuit diagram of the car air conditioner of the present embodiment.

The elevator shown in FIG. 1 has a car 2 installed in a hoistway 1, a counterweight (not shown) connected to the car 2 via a main rope 3, and a main rope 3. It is equipped with a hoisting machine (not shown) that gives a driving force, and a control panel (not shown) that performs overall control of the elevator including the control of the hoisting machine. The control panel is installed in the machine room in an elevator with a machine room, while it is installed in the hoistway 1 in an elevator without a machine room, and drives the hoisting machine to drive the car 2
Is movable up and down in the hoistway 1. In addition, an in-car operating panel 7 is provided in the car 2, and a car power box 8 is installed above the car 2.
As shown in FIG. 5, an air outlet 2A for an existing ventilation fan (not shown) is formed on the upper surface, and a louver 2B is detachably attached to the air outlet 2A.

As shown in FIG. 1, the car air-conditioning system of this embodiment has a steel plate body unit 4 arranged above the car 2, a main body unit 4 and the car 2 above. A duct 6 formed between a flexible and flame-retardant (including non-flammable) hose, and the duct 6
It is mainly composed of a heater unit 5 which is connected to the side of the car 2 and is mounted on the car 2.
A heating / cooling changeover switch 9 is provided in a car-top power supply box 8 installed on the car 2.

The main body unit 4 is provided on the crosshead 10 arranged above the outside of the car 2 so as to be movable in the front-rear direction of the car 2. Specifically, a plurality of height holding brackets 42 are erected on the crosshead 10, and horizontal holding bases 43 are provided at the upper end portions of these height holding brackets 42, respectively.
On the other hand, the main body unit 4 is provided so as to be movable in the front-rear direction of the car 2. The height holding bracket 42 is made of a steel plate and is detachably fixed to the crosshead 10 with screws or the like, and a horizontal holding base 43 is attached to the upper end portion of the height holding bracket 42 so as to be horizontally movable. . The horizontal holding table 43 is also made of steel plate, and each horizontal holding table 43
The main body unit 4 is detachably fixed to the main body with screws or the like.

The body unit 4 has, for example, a vertical dimension of about 52.
cm, the lateral dimension is about 47 cm, and the height dimension is about 35 cm. The duct 6 has a length of about 2 m and a diameter of about 15 cm. Further, as shown in FIG. 2, the main body unit 4 cools the compressor 11 that compresses and sends the vapor of a refrigerant such as hydrocarbon, and the vapor of the refrigerant in a high temperature and high pressure state from the compressor 11. The condenser 12 to be a liquid, the expansion means 13 including an expansion valve for lowering the pressure of the refrigerant so that the refrigerant liquid obtained in the condenser 12 is easily evaporated, and the expansion means 1
The refrigerant liquid in a low-temperature and low-pressure state sent from 3 is deprived of ambient heat to evaporate, and the evaporator 14 for sending the evaporated refrigerant vapor to the compressor 11 and the air in the car 2 The first fan 1 which is blown onto the evaporator 14 to cool it and sends the cooled air into the car 2
5 and a drain receiver 1 made of a steel plate, which is disposed on the inner bottom of the main body unit 4 and stores the drain water A generated from the evaporator 14.
6 and the drain water A in the drain receiver 16 to the condenser 12
The second fan 17 for sending the evaporated drain water into the hoistway 1 and the condenser 12
A receiver 18 for temporarily storing the refrigerant liquid condensed in
A winding type electric motor 20 that drives both the first fan 15 and the second fan 17 is built in.

The compressor 11 is, for example, a rotary type, the condenser 12 is a cross fin type, the expansion means 13 is a capillary tube type, and the evaporator 14 is a cross fin type. The first fan 15 is a multi-blade sirocco fan among centrifugal fans, and the air flow rate is set to, for example, about 5.7 cubic meters per minute. The size and noise of the 15 are reduced. Further, a propeller fan or an axial fan is used as the second fan 17.

The main unit 4 has a first inlet 4C for taking in the air in the hoistway 1 or the car 2 by the operation of the first fan 15 and a duct 4 for the air cooled by the evaporator 14. To the first hoistway 1A, the second outlet 4A that receives the air in the hoistway 1 by the operation of the second fan 17, and the air that contains the evaporated drain water A is sent into the hoistway 1. It has the 2nd outflow port 4B. The first inflow port 4C is provided so as to face the evaporator 14, and the dust removal filter 23 is removably provided at the first inflow port 4C. The first inflow port 4C is provided through the first inflow port 4C. The air in the hoistway 1 flows into the evaporator 14 side. The second inflow port 4D is provided so as to face the condenser 12, and the air in the hoistway 1 flows into the condenser 12 via the second inflow port 4D. When the compressor 11 is operated,
The air warmed by the condenser 12 flows into the hoistway 1 from the second outlet 4B by the operation of the second fan 17.

In the main unit 4, the first inlet 4C
The partition wall 19 is airtightly partitioned so that the air that has flowed in from the above and the air that has flowed in from the second inlet 4D do not mix. The electric motor 20 is fixed to a substantially central portion of the body unit 4 by a support member 21.

The drain receiver 16 disposed on the inner bottom of the main body unit 4 extends from below the evaporator 14 to below the condenser 12, and is in the form of a container that can be detached from the main body unit 4. The volume of 16 is set to a size capable of accumulating a maximum of about 1.5 liters of drain water A. The tip portion 17A of the second fan 17 is shown in FIG.
As shown in, the drain water A in the drain receiver 16 is infiltrated. The condenser 12 is provided with a resin cover 22 for guiding the drain water A scattered by rotating the fan 17 so as to cover the second fan 17 to the condenser 12 side. This cover 22 is used for the second fan 17
The drain water A that has been scattered by the rotation of and has adhered to the cover 22 does not easily drop.

As shown in FIGS. 3 to 5, the heater unit 5 is a heater case 2 made of a steel plate and formed in a box shape.
4, a heater support member 25 in the heater case 24,
25A, three sets of positive temperature coefficient thermistors 26, 26A, 26B arranged in three rows, and heater support members 25, 2
5A, a thermal fuse 27, a first packing 28 that is made of a nonflammable heat insulating material and maintains airtightness between the duct 6 side and the air inlet 5A of the heater unit 5, and a flame retardant heat insulating material. A second packing 29 for maintaining airtightness between the air outlet 5B of the heater unit 5 and the car 2 side, and a mounting for attaching the heater case 24 to the existing ventilation fan outlet 2A on the car 2 Metal fittings 30, 30
A and 30B are provided. The above-mentioned PTC thermistors 26, 26A, and 26B generate a maximum amount of heat of approximately 1400 W.
Is set to these positive temperature coefficient thermistors 26, 26.
A power supply for energizing A and 26B and a control power supply for controlling the car 2 are separately provided.

The heater case 24 itself is shown in FIGS.
As shown in FIG. 3, the box-shaped member 33 has an air inlet 5A on its upper surface and a flat plate-shaped member 34 having an air outlet 5B that covers the lower surface of the opening of the box-shaped member 33. The flange 33A formed at the lower end of 33 is attached to the bolt 33B.
The box-shaped member 33 and the plate-shaped member 34 are integrated by air-tightly fixing them on the plate-shaped member 34 using, for example. Since the vertical dimension and the horizontal dimension of the flat plate-shaped member 34 are set to be larger than the vertical dimension and the horizontal dimension of the box-shaped member 33, respectively, as shown in FIG. It is in a state of protruding to the left, right, front, and rear of the member 33, and in the protruding plate member 33,
The three fittings 30, 30A, 30B are welded.

Further, as shown in FIG. 6, the electric circuit of the car air-conditioning system of this embodiment is connected in series with the air-conditioning on / off switch 35 provided on the car operation panel 7 and the air-conditioning on / off switch 35. A first relay 36, a first normally open contact 36A-1 of the first relay 36, a first timer 37 connected in series with the first normally open contact 36A-1, and a first Second normally open contact 36A-2 of the relay 36 of
A second timer 40 provided between the normally open contact 36A-2 and the electric motor 20, a third normally open contact 36A-3 of the first relay 36, the third normally open contact 36A-3, and an air conditioning heating switch. First timer 37 provided between
Normally closed contact 37B-1, a thermostat 39 connected in series to the compressor 11, a normally closed contact 40B-1 of a second timer 40 connected to the thermostat 39 and the electric motor 20, and a cooling / heating switch 9 First contact point 9A
And a thermal protector 44 connected to
Positive temperature coefficient thermistors 26, 26A and 26B are connected to the thermal protector 44 via a thermal fuse 27,
The compressor 11 is connected to the second contact 9B of the cooling / heating switch 9.

The electric motor 20, the compressor 11 and the thermostat 39 described above constitute a cooling electric circuit 38. Further, the electric motor 20, the thermal protector 44, the temperature fuse 27 and the positive temperature coefficient thermistors 26, 26A, 2 are provided.
The heating electric circuit 41 is constituted by 6B, and the heating electric circuit 38 and the heating electric circuit 41 are switched by the heating / cooling changeover switch 9.

In the car air conditioner of this embodiment, when the existing elevator is modified to install the car air conditioner, first, as shown in FIG. 5, from the outlet 2A on the car 2 After removing the existing ventilation fan,
The air outlet 5B side of the heater unit 5 is attached to the air outlet 2A by the attachment members 31, 31A and the attachment fittings 30, 30A.
30B is detachably connected, the main body unit 4 is attached to the crosshead 10, and finally, the duct 6 is provided between the main body unit 4 and the heater unit 5.
And one end 6A of this duct 6 is connected to the heater unit 5
Is detachably connected to the air inflow port 5A of the main body unit 4 via the duct mounting member 32, and the other end of the duct 6 is detachably connected to the first outflow port 4A of the main body unit 4. As a result, the duct 6 can be freely attached, detached, and replaced on the car 2.

When the passenger car air conditioner of the present embodiment is used to warm the inside of the passenger car 2 in winter, the maintenance worker steps on the passenger car 2 and sets the heating / cooling changeover switch 9 to the first position.
When the contact is switched to the contact 9A side, the heating electric circuit 41 is selected. Therefore, the air conditioning on / off switch 35 in the car 2
Turn on the power (+)-air conditioning on / off switch 35-first
Relay 36-power supply (-) circuit is closed, the first normally open contact 36A-1, the second normally open contact 36A-2, and the third
The normally open contacts 36A-3 are closed. With this,
The first timer 37 starts the time counting operation, and the electric motor 2
The operation of 0 energizes the air, and the air passing through the duct 6 connected to the first outlet 4A of the body unit 4 is warmed by the positive temperature coefficient thermistors 26, 26A, 26B, and the air is warmed up in the car 2 The inside of the car 2 is warmed by being sent to. Then, when the time set by the first timer 37 elapses, the normally closed contact 37B-1 is opened and the positive temperature coefficient thermistors 26, 26A and 26B are opened.
After that, the time limit set by the second timer 40, for example,
After about 3 minutes have passed, the normally-closed contact 40B-1 opens to open the electric motor 20 and stop the rotation of the first fan 15.

At this time, when the ambient temperature in the heater case 24 reaches a predetermined temperature, for example, about 82 ° C., the temperature fuse 27 of the heater unit 5 is blown to stop the energization of the positive temperature coefficient thermistors 26, 26A and 26B. To do. Further, the thermal protector 44 is a positive temperature coefficient thermistor 26,
26A, 26B in direct contact with the positive temperature coefficient thermistor 26,
When 26A and 26B reach a predetermined abnormal temperature, for example, about 90 degrees C, the power supply to the positive temperature coefficient thermistors 26, 26A and 26B is stopped. After that, the positive temperature coefficient thermistors 26, 26
The temperature of A and 26B is a predetermined safety temperature, for example, about 80 degrees C
If it decreases to the positive temperature coefficient thermistors 26, 26A, 2
Return power to 6B.

Further, when it is desired to cool the inside of the car 2 in the summer, the maintenance worker rides on the car 2 and switches the heating / cooling changeover switch 9 to the second contact 9B side so as to cool the electric circuit 38. Is selected. So, the car 2
When the inside air conditioning switch 35 is turned on, the electric motor 20 rotates to drive the first fan 15 and the second fan 17, and the compressor 11 operates to operate the first outlet 4A of the main unit 4. Since cold air is sent from the inside of the car 2 through the duct 6, the inside of the car 2 is cooled.
At this time, the condenser 12 is operated by the operation of the second fan 17.
Since the air warmed by and the drain water A evaporated in the condenser 12 are sent out together from the second outlet 4B into the hoistway 1, the drain water A is drained to the extent that it leaks from the upper surface of the drain receiver 16. It does not collect in the receiver 16.

In this embodiment having such a configuration, the drain water A is prevented from being generated in the evaporator 14 without the compressor 11 being operated when the inside of the car 2 is being heated, and the inside of the car 2 is being cooled. Since the drain water generated in the evaporator 14 is made to self-evaporate in the hoistway 1 by the condenser 12 and the second fan 17, the drain receiver 18
The drain water A will not be accumulated to the extent that it overflows, and drain drainage equipment becomes unnecessary.

In the present embodiment, the car 2
Since the heater unit 5 is attached to the upper existing ventilation fan outlet 2A using the existing ventilation fan attachment members 31 and 31A, the heater unit 5 is attached to the car 2.
There is no need to drill holes to attach the
In addition, since a mounting member for fixing the heater unit 5 to the car 2 is newly manufactured and the mounting work of the mounting member is unnecessary, the existing elevator can be easily modified so that the car 2 can be cooled and heated. be able to.

Further, in the present embodiment, when the temperature of the PTC thermistors 26, 26A, 26B reaches a predetermined abnormal temperature, the thermal protector 44 stops the energization of the PTC thermistors 26, 26A, 26B. ,afterwards,
If the temperature of the PTC thermistors 26, 26A, 26B has dropped to a predetermined safety temperature, the PTC thermistors 26, 2
Since the energization to 6A and 26B is restored, the temperature of the positive temperature coefficient thermistors 26, 26A and 26B can be maintained within a certain range, and the heater unit 5 can be prevented from being overheated, which is safe.

Further, in the present embodiment, the first fan 15 is turned off after a lapse of a predetermined time after the positive temperature coefficient thermistors 26, 26A, 26B of the heating electric circuit 41 are turned off. The heater unit 5 can be effectively cooled by the air blown from the fan 15, and the heater unit 5 is not overheated. Furthermore, when the ambient temperature inside the heater case 24 reaches a predetermined temperature, the temperature fuse 27 is blown and the positive temperature coefficient thermistors 26, 26A, 2
Since the power supply to 6 is cut off, overheating of the heater unit 5 can be prevented from this point as well, which is safe.

Further, in this embodiment, the heating / cooling changeover switch 9 is provided in the car power box 8 installed on the car 2 so that only the maintenance worker operates the heating / cooling changeover switch 9. Since this is not possible, the positive temperature coefficient thermistors 26, 26A, 26B are safe from being accidentally cut by the elevator passengers.

Further, in this embodiment, when the main body unit 4 is moved on the crosshead 10 in the front-back direction of the car 2, the hose forming the duct 6 has flexibility and expands and contracts. In addition to the smooth movement of the main body unit 4, even if the heater unit 5 becomes abnormally overheated due to a failure of the heater unit 5, the hose forming the duct 6 has flame retardance. It is possible to prevent the duct 6 from burning.

Further, in the present embodiment, even if the main body unit 4 is a relatively small one having a vertical dimension of about 52 cm, a lateral dimension of about 47 cm, and a height dimension of about 35 cm, the inside of the car 2 can be secured. Can be fully heated and cooled.
Moreover, since the main body unit 4 is small as described above,
The body unit 4 can be easily installed on the car 2.

Further, in this embodiment, the positive temperature coefficient thermistors 26, 26A, 2 serving as the heat source of the heater unit 5 are used.
By arranging 6B in a plurality of rows, the height of the heater case can be reduced and the heater unit 5 can be made thin, so that the heater unit 5 is placed on the car 2 without being bulky. be able to. For example, the heater unit 5 has a vertical dimension of about 27 cm and a horizontal dimension of about 27 c.
It is possible to combine the m and height dimensions into a size of about 8 cm, and it is possible to reduce the size of the heater unit 5.

Further, in this embodiment, when the heater unit 5 or the duct 6 fails, the heater unit 5 is detached from the duct 6 so that the heater unit 5 or the duct 6 can be replaced or inspected. Maintenance work can be done easily.

Further, in the present embodiment, since the characteristic thermistors 26, 26A, 26B can be detached from the heater case 24 and the heater unit 5 can be detached from the duct 6 and the car 2, the heater unit 5 and the characteristic thermistor can be removed. Maintenance work such as replacement, repair, disassembly and cleaning of 26, 26A and 26B becomes easy.

Further, in the present embodiment, the car 2
Since the control power supply for controlling the electric power is provided separately from the power supply for energizing the positive temperature coefficient thermistors 26, 26A, 26B of the heater unit 5, it does not adversely affect the operation control of the car 2.

Further, in the present embodiment, the elevator passenger operates the air conditioning on / off switch 35 in the car 2 to turn on / off the heating or cooling of the car 2, which is convenient. It is possible to obtain an air conditioner for a car capable of good heating and cooling.

Further, in the present embodiment, when dust such as cotton dust flows into the main body unit 4 together with the air in the hoistway 1, the dust is removed by the dust removing filter 23. It is possible to prevent the dust from entering the car 2 or returning to the hoistway 1. Further, by removing the dust removing filter 23 from the main body unit 4 and washing or brushing the dust removing filter 23, the dust attached to the dust removing filter 23 can be easily removed.

In this embodiment, the dust removing filter 23 is detachably provided only at the first inlet 4C of the main body unit 4, but instead of the first inlet 4C, the first inlet 4C is provided. It may be provided at the outlet 4A, and in addition the first of these
A dust removing filter may be provided on both the inflow port 4C and the first outflow port 4A. Further, at least the dust removing filters of the second inflow port 4D and the second outflow port 4B may be detachably provided.

Further, in the present embodiment, hydrocarbon is used as the refrigerant used in the compressor 11 or the like. Instead of this hydrocarbon, an inorganic compound, a hydrocarbon, a halogenated hydrocarbon, and an azeotropic mixture are used. Can be used.

FIG. 7 is an explanatory view of an elevator equipped with an air conditioner for a car according to another embodiment of the present invention, FIG. 8 is a plan view of a car equipped with this embodiment, and FIG. 9 is a view of this embodiment. FIG. 10 is a front view showing a state in which an elongated heater unit provided is mounted on a car, FIG. 10 is a side view showing a state in which the elongated heater unit provided in the present embodiment is mounted on a car, and FIG. FIG. 12 is a side view of the upper portion of the provided car, FIG. 12 is a view showing a state in which the main body unit provided in the present embodiment is attached via a height holding bracket, and FIG. 13 is an enlarged view of the elongated heater unit of FIG. FIG. 14 is a side view, FIG. 14 is an enlarged front view showing the elongated heater unit of FIG. 13, and FIG. 15 is an electric circuit diagram of the car air conditioner of the present embodiment. In addition, in FIGS. 7 to 15, the same components as those shown in FIGS. 1 to 6 described above are denoted by the same reference numerals.

In the car air-conditioning system of this embodiment shown in FIGS. 7 to 15, the elongated heater unit 46 is attached to and detached from the blowing duct 47 on the car 2 as compared with the above-described one shown in FIGS. It is different in that it is mounted as possible and a dedicated blower 45 such as an existing ventilation fan made of a sirocco fan is provided on the elongated heater unit 46. In the electric circuit of the car air conditioner of the present embodiment, the dedicated blower 45 is provided. Is connected in parallel with the electric motor 20, and the parallel circuit is a normally open contact 36A-2 of the first relay 36 and the second timer 4
It is different that it was connected in series to the 0 series circuit,
Other configurations are basically the same.

As shown in FIGS. 7 to 10, one end 6A of the duct 6 is connected to the inlet 45A of the dedicated blower 45, and the outlet 45B of the dedicated blower 45 is connected via the elongated heater unit 46 and the blowing duct 47. Car basket 2
Are linked to.

The elongated heater unit 46 is made of a steel plate and is set so that the lateral dimension and the height dimension are substantially the same. As shown in FIGS. 13 and 14, the elongated heater unit 46 is provided with an elongated heater case 50 and three sets of positive characteristics which are arranged in a line in the elongated heater case 50 and supported by the elongated support member 51. Thermistor 2
6, 26A, 26B, the temperature fuse 27 provided on the elongated support member 51, the first elongated packing that maintains airtightness between the outlet 45B of the dedicated blower 45 and the inlet 50A of the elongated heater case 50 (Fig. (Not shown) and a second elongated packing (not shown) for maintaining airtightness between the outlet 50B of the elongated heater case 50 and the car 2 side.

In the car air conditioner of this embodiment,
As shown in FIGS. 11 and 12, when assembling the horizontal holding base 43 and the height holding bracket 42 on the car 2, the height holding bracket 42 is erected on the car 2 and the height holding bracket 42 is installed upright. A mounting flange 43A integrally provided on the lower surface of the horizontal holding base 43 is attached to the upper end portion of 42, and a bolt 48 is fitted into a long groove 43B of the mounting flange 43A, and then fixed with a nut and a washer (not shown). As a result, the horizontal holding base 43 and the height holding bracket 42 are integrated. Further, by loosening the nuts and washers, and moving the bolts 48 fitted in the long grooves 43B of the mounting flange 43A through the long grooves 43B, the horizontal holding base 43 and the main body unit 4 are indicated by arrows P in FIG. Direction and the direction indicated by the arrow Q, that is, the car 2 can be moved in the front-rear direction.

Further, when the passenger car 2 is desired to be warmed in the winter by using the passenger car air conditioner of the present embodiment, the maintenance worker rides on the passenger car 2 and sets the heating / cooling changeover switch 9 to the first position.
When the contact is switched to the contact 9A side, the heating electric circuit 41 is selected. Therefore, the air conditioning on / off switch 35 in the car 2
Turn on the power (+)-air conditioning on / off switch 35-first
Relay 36-power supply (-) circuit is closed, the first normally open contact 36A-1, the second normally open contact 36A-2, and the third
The normally open contacts 36A-3 are closed. With this,
The first timer 37 starts the time counting operation, and the electric motor 2
With the operation of 0, the first fan 15 rotates and
The dedicated blower 45 also rotates. At the same time, the positive temperature coefficient thermistors 26, 26A, 26B are energized, and the first
The air passing through the inside of the duct 6 connected to the outflow port 4A is warmed by the positive temperature coefficient thermistors 26, 26A and 26B, and the air is sent into the car 2 as warm air, so that the car 2 is warmed. Then, when the time set by the first timer 37 elapses, the normally closed contact 37B-1
Is opened and the positive temperature coefficient thermistors 26, 26A and 26B are opened. After that, the time limit set by the second timer 40,
For example, after about 3 minutes have passed, the normally-closed contact 40B-1 opens to open the electric motor 20 and stop the rotation of the first fan 15. At this time, the dedicated blower 45 continues to blow air.

In addition, when it is desired to cool the inside of the car 2 in the summer, the maintenance worker rides on the car 2 and switches the heating / cooling changeover switch 9 to the second contact 9B side to cool the electric circuit 38. Is selected. So, the car 2
When the air conditioning on / off switch 35 in the inside is turned on, the electric motor 20 rotates to drive the first fan 15 and the second fan 17, and the dedicated blower 45 also rotates, and the compressor 11 operates to operate the main unit 4 of the main unit 4. Since the cool air is sent from the first outlet 4A into the car 2 through the duct 6, the inside of the car 2 is cooled.

In the car air-conditioning system of this embodiment thus constructed, the same effects as those shown in FIGS. 1 to 6 can be obtained.

Further, in the present embodiment, since the exclusive blower 38 and the first fan 15 can be rotated simultaneously during heating and cooling, it is sufficient to heat or cool the inside of the car 2. The amount of air blow can be obtained.

Furthermore, in this embodiment, the elongated heater unit 46 serves as a heat source for the positive temperature coefficient thermistors 26, 2 and.
6A and 26B are used to line up in a straight line,
Since the elongated heater case 50, the elongated support member 51, the first elongated packing, and the second elongated packing are provided, the overall shape of the heater unit 46 can be made into an elongated cylindrical shape, and the blowing into the car 2 is possible. It becomes easy to make the outlet slender. For example, the vertical dimension of the elongated heater unit 46 is about 4
The size can be reduced to 8 cm, the lateral dimension can be about 7 cm, and the height dimension can be about 7 cm.

Further, in this embodiment, the height of the main unit 4 is provided on the car 2 by the height holding bracket 42 and the height horizontal holding base 43 which are erected on the crosshead 10. It can be set at a position higher than the height of the fence 49, and when performing maintenance work on the main body unit 4, the maintenance work can be easily performed without the maintenance worker bending over.

Furthermore, in the present embodiment, the duct 6 can be communicated with the inside of the car 2 without removing the existing ventilation fan, the modification work time can be shortened, and the inside of the car 2 can be cooled and heated. Thus, the existing elevator can be easily modified.

[0099]

As described above, according to the present invention, heating or heating / cooling of the elevator car can be performed without the need for drain drainage equipment. Furthermore, an elevator car air-conditioning system can be obtained in which the existing elevator can be easily modified to allow heating or heating / cooling of the car.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an elevator including an air conditioner for a car according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main body unit provided in this embodiment.

FIG. 3 is a bottom view of a car heater unit provided in the present embodiment.

4 is a cross-sectional view taken along the line AA of the heater unit in FIG.

FIG. 5 is a cross-sectional view showing a state where the heater unit of FIG. 3 is attached to the upper part of the car.

FIG. 6 is an electric circuit diagram of the car air conditioner of the present embodiment.

FIG. 7 is an explanatory diagram of an elevator including a car air-conditioning system according to another embodiment of the present invention.

FIG. 8 is a plan view of a car equipped with the present embodiment.

FIG. 9 is a front view showing a state in which the elongated heater unit provided in the present embodiment is mounted on a car.

FIG. 10 is a side view showing a state in which the elongated heater unit provided in the present embodiment is mounted on a car.

FIG. 11 is a side view of the upper portion of the car with the present embodiment.

FIG. 12 is a view showing a state where the main body unit provided in the present embodiment is attached via a height holding bracket.

FIG. 13 is an enlarged side view showing the elongated heater unit of FIG.

FIG. 14 is an enlarged front view of the elongated heater unit shown in FIG.

FIG. 15 is an electric circuit diagram of the car air conditioner of the present embodiment.

[Explanation of symbols]

1 hoistway Two car 2A Existing ventilation fan outlet 4 Main unit 4A First outlet 4B Second outlet 4C 1st inlet 4D Second inlet 5 heater unit 6 duct (hose) 7-cab driving panel 8 car power supply box 9 heating / cooling selector switch 10 crosshead 11 compressor 12 condenser 13 Expansion means 14 Evaporator 15 First Fan 16 drain receiver 17 Second Fan 20 electric motor 23 Dust removal filter 24 heater case 26, 26A, 26B Positive Characteristic Thermistor 27 Thermal fuse 28 First packing 29 Second packing 30, 30A, 30B Mounting bracket 31, 31A mounting member 35 Air conditioner on / off switch 36 First Relay 37 First Timer 38 Cooling electric circuit 39 thermostat 40 Second timer 41 heating electric circuit 42 Height retaining bracket 43 Horizontal holding table 44 Thermal protector 45 Dedicated blower (existing ventilation fan) 45A inlet 45B outlet 46 Slender heater unit 47 blowout duct 50 slim heater case 51 elongated support member

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F24F 13/28 F24F 1/00 426 13/32 371A (72) Inventor Kei Tsuchida 1 Kanda Nishiki-cho, Chiyoda-ku, Tokyo 6-chome, Hitachi Building System Co., Ltd. (72) Inventor, Kimiyoshi Hayasaka 1-6, Kanda Nishiki-cho, Chiyoda-ku, Tokyo In-house Hitachi Building System (72) Inventor, Yukio Ishibashi 1-chome, Kanda Nishiki-cho, Chiyoda-ku, Tokyo No. 6 F-term in Hitachi Building Systems Co., Ltd. (reference) 3F306 CB02 CB06 CB51 CB52 3L050 BD05 BF03 3L051 BA02 BH04 BJ10 3L060 AA05 AA08 CC01 CC19 DD01 EE02 EE05 EE07 3L061 BE01 BF01

Claims (22)

[Claims] 1. A compressor, in which a main body unit is installed above a car and a refrigerant vapor is compressed and sent to the main body unit, and a refrigerant vapor from the compressor is cooled to be a liquid. Vessel, expansion means for lowering the pressure of the refrigerant so that the liquid of the refrigerant obtained in this condenser is easily evaporated, and the liquid of the refrigerant sent from this expansion means,
While taking away the heat from the surroundings to evaporate it, an evaporator that guides the vapor of the evaporated refrigerant to the compressor and the air inside the car is blown to the evaporator to cool it, and the cooled air is then taken to the car. A first fan fed into the inside, a drain receiver for storing drain water generated from the evaporator, a drain water in the drain receiver is blown to the condenser to evaporate, and then the evaporated drain water is removed. An elevator car air-conditioning system comprising at least a second fan for feeding into the hoistway, wherein air sent by the first fan is introduced into the car between the main body unit and the top of the car. A duct for guiding is provided and a heater unit is arranged on the side of the car of the duct to rotate the first fan while the compressor is not operating and to rotate the heater. An air conditioner for an elevator car, wherein the air sent from the duct into the car is warmed by energizing the data unit. 2. The air conditioner for the elevator car according to claim 1, wherein the heat source of the heater unit is a positive temperature coefficient thermistor. 3. The air conditioner for an elevator car according to claim 1, wherein the heater unit is detachably attached to the duct. 4. A crosshead disposed above the car, wherein the main body unit is provided so as to be movable in the front-rear direction of the car. Elevator car air conditioner. 5. A plurality of height holding brackets are erected on the crosshead, and horizontal holding bases are provided at upper ends of the height holding brackets, and the horizontal holding bases are provided with respect to the horizontal holding bases. 5. The elevator car air-conditioning system according to claim 4, wherein the main body unit is provided so as to be movable in the front-rear direction of the car. 6. The duct comprises a hose having flexibility and flame retardancy.
An elevator car air conditioner according to any one of 1. 7. The car-side end of the duct is connected to an outlet for an existing ventilation fan provided in the car, as claimed in any one of claims 1 to 6. Air conditioner for elevator car. 8. The heater unit includes a heater case, a plurality of sets of positive temperature coefficient thermistors arranged in a plurality of rows in the heater case by a supporting member, a temperature fuse provided in the supporting member, and a flame retardant property. Between the duct and the inlet of the heater unit, and a first packing that maintains airtightness between the duct and the inlet of the heater unit; and between the outlet of the heater unit and the car side, which is made of a flame-retardant insulator. 8. An air conditioner for an elevator car according to any one of claims 2 to 7, characterized in that it comprises a second packing for holding the airtightness of the vehicle and a fitting for attaching the heater case to an existing ventilation fan outlet. apparatus. 9. The heater unit is attached to the outlet using an attachment member for the existing ventilation fan after removing the existing ventilation fan from the outlet provided on the car. An air conditioner for an elevator car according to any one of claims 1 to 8. 10. The heater unit includes a heater case, three sets of positive temperature coefficient thermistors arranged in three rows by a supporting member in the heater case, a temperature fuse provided in the supporting member, and the duct. A first packing that maintains airtightness with the inlet of the heater unit, a second packing that maintains airtightness between the outlet of the heater unit and the car side, and the heater case are already installed. The elevator car according to any one of claims 2 to 9, further comprising: a mounting bracket attached to a ventilation fan outlet, wherein the positive temperature coefficient thermistor is detachably attached to the heater case. Air conditioner. 11. The air conditioner for an elevator car according to any one of claims 1 to 10, wherein the heater unit is detachably attached to the duct and the existing ventilation fan outlet. . 12. The thermal fuse is cut off when the ambient temperature inside the heater case of the heater unit reaches a predetermined temperature, and the power supply to the positive temperature coefficient thermistor is stopped. An air conditioner for an elevator car according to any one of 11 above. 13. When the PTC thermistor directly contacts the PTC thermistor and reaches a predetermined abnormal temperature, the PTC thermistor is de-energized, and thereafter the temperature of the PTC thermistor is kept at a predetermined safety level. The elevator car air conditioner according to any one of claims 8 to 12, further comprising a thermal protector that restores power to the positive temperature coefficient thermistor when the temperature drops to a temperature. 14. The power supply for energizing the positive temperature coefficient thermistor of the heater unit and the control power supply for controlling the car are separately provided.
An elevator car air conditioner according to any one of 1. 15. A first inflow port for receiving air in the hoistway or a car by operating the first fan, and an air cooled by the evaporator are sent to the duct to the main body unit. A first outlet, a second inlet for receiving the air in the hoistway by the operation of the second fan, and a second flow for sending the air containing the evaporated drain water into the hoistway. An outlet is provided, and a dust removing filter is detachably provided on at least one of the first inflow port and the first outflow port, and at least one of the second inflow port and the second outflow port is provided. The elevator air-conditioning system for a car according to any one of claims 1 to 14, wherein another dust removing filter is detachably provided. 16. A compressor, in which a main body unit is installed above a car, the refrigerant vapor is compressed and sent to the main body unit, and the refrigerant vapor from the compressor is cooled to be a liquid. Vessel, expansion means for lowering the pressure of the refrigerant so that the liquid of the refrigerant obtained in this condenser is easily evaporated, and the liquid of the refrigerant sent from this expansion means,
While taking away the heat from the surroundings to evaporate it, an evaporator that guides the vapor of the evaporated refrigerant to the compressor and the air inside the car is blown to the evaporator to cool it, and the cooled air is then taken to the car. A first fan fed into the inside, a drain receiver for storing drain water generated from the evaporator, a drain water in the drain receiver is blown to the condenser to evaporate, and then the evaporated drain water is removed. An elevator car air-conditioning system comprising at least a second fan for feeding into the hoistway, wherein air sent by the first fan is introduced into the car between the main body unit and the top of the car. A duct for guiding is provided and a heater unit is arranged on the side of the car of the duct to rotate the first fan while the compressor is not operating and to rotate the heater. The air sent to the inside of the car from the duct is warmed by energizing the heater unit, and the air cooled by the evaporator is operated by operating the compressor without energizing the heater unit. An elevator car air-conditioning system characterized in that the air is sent from the duct into the car by the rotation of a fan. 17. A car comprising: a cooling electric circuit including the compressor and an electric motor driving the first fan and the second fan; and a heating electric circuit including a positive temperature coefficient thermistor and the electric motor. 17. The air conditioner for a car of an elevator according to claim 16, wherein a power supply box for a car installed above is provided with a heating / cooling changeover switch for switching between the cooling electric circuit and the heating electric circuit. 18. The first fan is stopped after being operated for a predetermined time after the positive temperature coefficient thermistor of the heating electric circuit is opened.
7. An elevator car air conditioner according to 7. 19. An air conditioner on / off switch is provided on an operation panel in the car, and the air conditioner on / off switch is operated,
19. The air conditioner for an elevator car according to claim 17, wherein one of the cooling electric circuit and the heating electric circuit selected by the heating / cooling changeover switch is opened or closed. 20. A main body unit is installed above a car, a compressor for compressing and sending a vapor of a refrigerant to the main body unit, and a condenser for cooling the vapor of the refrigerant from the compressor to a liquid. Vessel, expansion means for lowering the pressure of the refrigerant so that the liquid of the refrigerant obtained in this condenser is easily evaporated, and the liquid of the refrigerant sent from this expansion means,
While taking away the heat from the surroundings to evaporate it, an evaporator that guides the vapor of the evaporated refrigerant to the compressor and the air inside the car is blown to the evaporator to cool it, and the cooled air is then taken to the car A first fan fed into the inside, a drain receiver for storing drain water generated from the evaporator, a drain water in the drain receiver is blown to the condenser to evaporate, and then the evaporated drain water is removed. An elevator car air-conditioning system comprising at least a second fan for feeding into a hoistway, wherein air sent by the first fan is introduced into an inlet of an existing ventilation fan for ventilating the car. A duct that leads to the inside is connected, and a heater unit is arranged on the outlet side of the existing ventilation fan, and the first fan is installed in a state where the compressor is not operated. An elevator car air conditioner characterized in that the air sent into the car from the duct is warmed by energizing the heater unit while rotating. 21. The elevator car air-conditioning system according to claim 20, wherein when the first fan is rotated, the existing ventilation fan is also rotated. 22. The heater unit includes an elongated heater case, three sets of positive temperature coefficient thermistors arranged in a line by elongated support members in the elongated heater case, and a temperature fuse provided on the elongated support member. From a first elongated packing that maintains airtightness between the duct and the inlet of the heater unit, and a second elongated packing that maintains airtightness between the outlet of the heater unit and the car side. 22. The method according to claim 20 or 21, wherein
Air conditioner for the elevator car described.