Air conditioning system of elevator

Abstract

To provide an air conditioning system of an elevator capable of improving the comfort in a car by a simple configuration.SOLUTION: An air conditioning system 10 of an elevator 20 is raises and lowers a car 22 between each landing 8 of each floor 6 in a hoistway 21. The air conditioning system comprises a hoistway ventilation device 11 provided at a landing 8, taking the air within a floor 6 into the hoistway 21 or exhausting the air in the hoistway 21 into the floor 6, and comprises a car ventilation device 12 provided in the car 22 and taking the air in the hoistway 21 into the car 22. The hoistway ventilation device 11 takes the air in the air-conditioned floor 6 into the hoistway 21 and exhausts the air in the hoistway 22 into the non-air-conditioned floor 6.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an air conditioning system for an elevator that raises and lowers a car within a hoistway between landings on each floor. [Background technology]

[0002] An elevator raises and lowers a car carrying passengers between the landings on each floor in a hoistway installed in a building. The car is equipped with a ventilation system that can draw air from the hoistway into the car, thereby maintaining a certain level of comfort inside the car.

[0003] However, since the inside of the elevator shaft is not a space that is conditioned by an air conditioner or the like, simply drawing the air from the elevator shaft into the car does not ensure sufficient comfort inside the car. For example, it is possible to install an air conditioner on the car to condition the inside of the car, but this may not be feasible due to a lack of installation space or an increase in the weight of the car. In particular, when the car is small, it is difficult to install an air conditioner on the car.

[0004] For example, Patent Document 1 discloses an elevator air conditioning system that has a ventilation device installed at each floor landing that draws air from the floor into the elevator shaft, and a ventilation device installed above the car that draws air from the elevator shaft into the car. This allows conditioned air to be drawn from the floor into the elevator shaft, and air from the elevator shaft to be drawn into the car, maintaining comfort inside the car. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2003-112874 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, the elevator air conditioning system of Patent Document 1 is provided with exhaust means for exhausting the air in the elevator shaft to the outdoors, resulting in a complex configuration.

[0007] Therefore, an object of the present invention is to provide an elevator air conditioning system that can improve comfort inside the elevator car with a simple configuration. [Means for solving the problem]

[0008] The elevator air conditioning system of the present invention is an elevator air conditioning system that raises and lowers a car between each landing on each floor within a hoistway, and comprises a first ventilation device that is provided at the landing and draws in air from within the floor into the hoistway or exhausts air from the hoistway to the floor, and a second ventilation device that is provided in the car and draws in air from the hoistway into the car, characterized in that the first ventilation device draws in air from a conditioned floor into the hoistway and exhausts air from the hoistway to an unconditioned floor.

[0009] According to the above configuration, the comfort of the passenger car can be improved with a simple configuration.

[0010] In the elevator air conditioning system of the present invention, it is preferable that the first ventilation device takes in the air in the floor into the elevator shaft when the difference between the air temperature in the floor and the air temperature in the elevator shaft is equal to or greater than a predetermined temperature.

[0011] According to the above configuration, sufficiently conditioned floor air is taken into the elevator shaft, and air from the elevator shaft is taken into the car, thereby efficiently conditioning the inside of the car.

[0012] In the elevator air conditioning system according to the present invention, it is preferable that the first ventilation device takes air from within the landing into the elevator shaft when the car and the floor are close to each other.

[0013] According to the above configuration, air from a floor close to the car is taken into the elevator shaft, and air in the elevator shaft is taken into the car, thereby efficiently conditioning the inside of the car. Effect of the Invention

[0014] According to the elevator of the present invention, comfort inside the elevator car can be improved with a simple configuration. [Brief description of the drawings]

[0015] [Figure 1] 1 is a schematic diagram illustrating an air conditioning system according to an embodiment; [Diagram 2] FIG. 2 is a block diagram showing a configuration of a control device according to an embodiment; [Diagram 3] FIG. 2 is a block diagram showing a configuration of a control device according to another embodiment of the present invention. [Figure 4] FIG. 2 is a block diagram showing a configuration of a control device according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] An example of an embodiment of the present invention will be described in detail below. In the following description, specific shapes, materials, directions, values, etc. are merely examples for the purpose of easily understanding the present invention, and can be appropriately changed according to the application, purpose, specifications, etc.

[0017] [Air conditioning system] An air conditioning system 10 as an example of an embodiment will be described with reference to Figs. 1 and 2.

[0018] The air conditioning system 10 is a system that conditions the air inside the car 22 of the elevator 20. The air conditioning system 10, which will be described in detail later, can improve the comfort inside the car 22 with a simple configuration.

[0019] As shown in FIG. 1, an elevator 20 is installed in, for example, an office building 5. The elevator of the present invention may also be installed in a department store, a shopping mall, a public facility, etc. Each floor 6 of the office building 5 is provided with an air conditioner 7 for conditioning each floor 6. Each air conditioner 7 is comprehensively controlled by a building air conditioning system. Each floor 6 is provided with a floor temperature sensor 13 for detecting the temperature of each floor 6 (see FIG. 2). The floor temperature sensor 13 may be an intake temperature sensor of each air conditioner 7 on each floor 6.

[0020] Each floor 6 is provided with a landing 8 for an elevator 20. Each landing 8 is provided with a landing door 9 that opens and closes in conjunction with a car door (not shown) of the elevator 20.

[0021] The elevator 20 is a device that raises and lowers a car 22 in a hoistway 21 between landings 8 on each floor 6. A hoistway temperature sensor 14 that detects the temperature inside the hoistway 21 is provided in the hoistway 21 (see FIG. 2).

[0022] The car 22 carries passengers and rises and falls according to the passengers' requests, stopping at the landing 8 on each floor 6. The car 22 is hung from one end of a wire rope 23. A counterweight (not shown) whose weight is set so as to balance with the car 22 is hung from the other end of the wire rope 23. The car 22 and the counterweight are raised and lowered by rotating a pulley (not shown) to which the wire rope 23 is hung, using an electric motor (not shown).

[0023] As shown in Figures 1 and 2, the air conditioning system 10 is provided at each landing 8 and includes an elevator shaft ventilation device 11 as a first ventilation device that takes in air from within the floor 6 into the elevator shaft 21 or exhausts air from the elevator shaft 21 to the floor 6, a car ventilation device 12 as a second ventilation device that is provided in the car 22 and takes in air from the elevator shaft 21 into the car 22, and a control device 30 that controls the operation of the elevator shaft ventilation device 11 and the car ventilation device 12.

[0024] The elevator shaft ventilation device 11 is provided, for example, above each landing door 9 of each landing 8 on each floor 6. The elevator shaft ventilation device 11 is connected to the control device 30. The elevator shaft ventilation device 11 can be switched to a state in which it takes in air from within the floor 6 into the elevator shaft 21, exhausts air from within the elevator shaft 21 into the floor 6, or blocks communication between the floor 6 and the elevator shaft 21. The elevator shaft ventilation device 11 may be a general ventilation device capable of so-called intake, exhaust, and blocking.

[0025] The car ventilation device 12 is provided, for example, above the car 22. The car ventilation device 12 is connected to the control device 30. The car ventilation device 12 can take in air from within the elevator shaft 21 into the car 22. The elevator shaft ventilation device 11 may be a general ventilation device capable of so-called intake air.

[0026] 2, the control device 30 controls the operation of the elevator shaft ventilation device 11 and the car ventilation device 12 to air-condition the inside of the car 22. The control device 30 may be, for example, a control panel that controls the operation of the elevator 20, or may be a control device for a building air-conditioning system that air-conditions the entire office building 5.

[0027] The control device 30 has a CPU (Central Processing Unit) which is an arithmetic processing unit, and storage units such as a RAM (Random Access Memory) and a ROM (Read Only Memory), and performs signal processing according to a program pre-stored in the ROM while utilizing the temporary storage function of the RAM.

[0028] The elevator shaft ventilation devices 11 and the car ventilation devices 12 of each floor 6 are connected to the control device 30. The air conditioners 7 of each floor 6 described above are also connected to the control device 30. The air conditioners 7 of each floor 6 described above are also connected to the control device 30. The floor temperature sensors 13 and the elevator shaft temperature sensors 14 of each floor 6 described above are also connected to the control device 30.

[0029] The control device 30 has a floor air conditioning determination unit 31, an abnormality occurrence determination unit 32, a shaft air intake unit 33, a floor air intake unit 36, a shaft air exhaust unit 37, and a shaft cutoff unit 38, each of which will be described in detail below. The floor air conditioning determination unit 31, the abnormality occurrence determination unit 32, the floor air intake unit 36, the shaft air exhaust unit 37, and the shaft cutoff unit 38 are realized by the CPU executing programs stored in the ROM or RAM.

[0030] The floor air conditioning discrimination unit 31 discriminates, for each floor 6 of the office building 5, between floors 6 where the air conditioners 7 are operating and floors 6 where the air conditioners 7 are not operating. It is considered highly likely that floors 6 where the air conditioners 7 are not operating are unoccupied because no tenants are occupying them, or the occupied tenants are on vacation, etc.

[0031] The abnormality occurrence determination unit 32 determines whether or not an abnormality has occurred using an abnormality detector such as an earthquake detector or a fire detector.

[0032] The elevator shaft air intake section 33 operates the car ventilation device 12 to take in the air in the elevator shaft 21 into the car 22.

[0033] The floor air intake unit 36 ​​takes in, into the elevator shaft 21, the air within the floor 6 that has been conditioned by the elevator shaft ventilation device 11 provided on the floor 6 for which the floor air conditioning determination unit 31 has determined that the air conditioner 7 is operating. In other words, the elevator shaft ventilation device 117 is set in a state in which the air within the floor 6 is taken into the elevator shaft 21. As a result, the conditioned air is taken into the elevator shaft 21, and the air within the elevator shaft 21 is further taken into the car 22, making the interior of the car 22 comfortable.

[0034] The elevator shaft air exhaust unit 37 exhausts the air in the elevator shaft 21 into the floor 6 by the elevator shaft ventilation device 11 provided on the floor 6 on which the floor air conditioning determination unit 31 has determined that the air conditioner 7 is not operating. In other words, the elevator shaft ventilation device 11 is set in a state in which the air in the elevator shaft 21 is exhausted into the floor 6. This makes it possible to exhaust the air in the elevator shaft 21 without providing a special means for exhausting the air in the elevator shaft 21. As described above, since there is a high possibility that no one is present on a floor 6 on which the air conditioner 7 is not operating, it is considered that there is no problem even if the air in the elevator shaft 21 is exhausted.

[0035] When the abnormality occurrence determination unit 32 determines that an abnormality has occurred, the elevator shaft shutoff unit 38 shuts off all floors 6 and the elevator shaft 21 by the elevator shaft ventilation devices 11 provided on all floors 6. This makes it possible to prevent the elevator shaft 21 from acting as a chimney and promoting combustion in the event of a fire caused by an abnormality.

[0036] [Another embodiment] Air conditioning systems 40 and 60, which are other examples of the embodiment, will be described with reference to Figures 3 and 4. Note that, hereinafter, only configurations different from the above-described air conditioning system 10 will be described, and configurations similar to those of the air conditioning system 10 will be omitted or simply described using the same reference numerals.

[0037] 3, the control device 50 of the air conditioning system 40 has a floor air conditioning determination unit 51, an abnormality occurrence determination unit 52, a shaft air intake unit 53, a temperature difference determination unit 54, a floor air intake unit 56, a shaft air exhaust unit 57, and a shaft cutoff unit 58, each of which will be described in detail later. The floor air conditioning determination unit 51, the abnormality occurrence determination unit 52, the shaft air intake unit 53, the temperature difference determination unit 54, the floor air intake unit 56, the shaft air exhaust unit 57, and the shaft cutoff unit 58 are realized by the CPU executing programs stored in the ROM or RAM.

[0038] The floor air conditioning discrimination unit 51, the abnormality occurrence determination unit 52, the elevator shaft air intake unit 53, the elevator shaft air exhaust unit 57 and the elevator shaft blocking unit 58 are similar to the floor air conditioning discrimination unit 31, the abnormality occurrence determination unit 32, the elevator shaft air intake unit 33, the elevator shaft air exhaust unit 37 and the elevator shaft blocking unit 38 described above, and therefore their explanation is omitted.

[0039] The temperature difference determination unit 54 determines whether the difference between the temperature in the floor 6 on which the floor air conditioning determination unit 51 has determined that the air conditioning unit 7 is operating and the temperature in the elevator shaft 21 is greater than or equal to a predetermined temperature difference (e.g., 3°C).

[0040] In addition, the temperature difference determination unit 54 may determine whether the difference between the set temperature of the air conditioning unit 7 on a floor 6 where the air conditioning unit 7 has been determined to be operating by the floor air conditioning determination unit 51 and the temperature inside the elevator shaft 21 is greater than or equal to a predetermined temperature difference.

[0041] The floor air intake unit 56 takes in conditioned air from the floor 6 into the elevator shaft 21 by the elevator shaft ventilation device 11 provided on the floor 6 where the temperature difference between the temperature in the floor 6 where the air conditioner 7 is determined to be operating by the temperature difference determination unit 54 and the temperature in the elevator shaft 21 is determined to be equal to or greater than a predetermined temperature difference. As a result, the air in the floor 6 that is sufficiently conditioned (having a temperature difference of at least a predetermined value from the temperature in the elevator shaft 21) is taken into the elevator shaft 21, and the air in the elevator shaft 21 is further taken into the car 22, so that the inside of the car 22 can be made comfortable efficiently.

[0042] 4, the control device 70 of the air conditioning system 60 has a floor air conditioning determination unit 71, an abnormality occurrence determination unit 72, a shaft air intake unit 73, a car approach determination unit 75, a floor air intake unit 76, a shaft air exhaust unit 77, and a shaft cutoff unit 78, each of which will be described in detail later. The floor air conditioning determination unit 71, the abnormality occurrence determination unit 72, the shaft air intake unit 73, the car approach determination unit 75, the floor air intake unit 76, the shaft air exhaust unit 77, and the shaft cutoff unit 78 are realized by the CPU executing programs stored in the ROM or RAM.

[0043] The floor air conditioning discrimination unit 71, the abnormality occurrence determination unit 72, the elevator air intake unit 73, the elevator air exhaust unit 77 and the elevator blocking unit 78 are similar to the floor air conditioning discrimination unit 31, the abnormality occurrence determination unit 32, the elevator air intake unit 33, the elevator air exhaust unit 37 and the elevator blocking unit 38 described above, and therefore their explanation is omitted.

[0044] The car proximity determination unit 75 determines whether the floor 6 on which the floor air conditioning determination unit 71 has determined that the air conditioner 7 is operating and the car 22 are close to each other within a predetermined range in the height direction.

[0045] The floor air intake unit 76 takes in the air conditioned within the floor 6 into the elevator shaft 21 by the elevator shaft ventilation device 11 provided on the floor 6 where the elevator car proximity determination unit 75 has determined that the floor 6 where the air conditioner 7 is operating and the elevator car 22 are determined to be close to each other within a predetermined range in the height direction. This allows the air within the floor 6 close to the elevator car 22 to be taken into the elevator shaft 21, and further the air within the elevator shaft 21 to be taken into the elevator car 22, making the interior of the elevator car 22 more comfortable efficiently.

[0046] The control device 70 of the air conditioning system 60 may have the above-mentioned temperature difference determination unit 54. In this case, the conditioned air in the floor 6 is taken into the elevator shaft 21 by the elevator shaft ventilation device 11 provided on the floor 6 where the temperature difference determination unit 54 determines that the air conditioner 7 is operating and the temperature in the elevator shaft 21 is greater than or equal to a predetermined temperature difference, and the car proximity determination unit 75 determines that the floor 6 where the air conditioner 7 is operating and the elevator shaft 22 are close to each other within a predetermined range in the height direction.

[0047] It should be noted that the present invention is not limited to the above-described embodiment and its modified examples, and various modifications and improvements are possible within the scope of the matters described in the claims of this application. [Explanation of symbols]

[0048] 5 office building, 6 floor, 7 air conditioning device, 8 landing, 9 landing door, 10 air conditioning system, 11 elevator ventilation device, 12 car ventilation device, 13 landing temperature sensor, 14 car temperature sensor, 20 elevator, 21 elevator, 22 car, 23 wire rope, 30 control device, 31 floor air conditioning determination unit, 32 abnormality occurrence determination unit, 33 elevator air intake unit, 36 floor air intake unit, 37 elevator air exhaust unit, 38 elevator shutoff unit, 40 air conditioning system, 50 control device, 51 floor air conditioning determination unit, 52 abnormality occurrence determination unit, 53 elevator air intake unit, 54 temperature difference determination unit, 56 floor air intake unit, 57 elevator air exhaust unit, 58 elevator shutoff unit, 60 air conditioning system, 70 control device, 71 Floor air conditioning determination unit, 72 abnormality occurrence determination unit, 73 elevator air intake unit, 75 proximity determination unit, 76 floor air intake unit, 77 elevator air exhaust unit, 78 elevator cutoff unit

Claims

1. An air conditioning system for an elevator that raises and lowers a car between landings on each floor in a hoistway, a first ventilation device provided at the landing for taking in air from within the floor into the elevator shaft or discharging air from within the elevator shaft to the floor; and a second ventilation device provided at the car for taking in air from within the elevator shaft into the car, The first ventilation device takes in air from within the conditioned floor into the elevator shaft and exhausts the air from within the elevator shaft to the unconditioned floor. Elevator air conditioning system.

2. 2. The elevator air conditioning system according to claim 1, The first ventilation device takes in air from within the floor into the elevator shaft when a difference between an air temperature within the floor and an air temperature within the elevator shaft is equal to or greater than a predetermined temperature. Elevator air conditioning system.

3. The elevator air conditioning system according to claim 1 or 2, The first ventilation device takes in air from within the floor into the elevator shaft when the elevator car and the floor are close to each other. Elevator air conditioning system.

Images