JPH0116987Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) This invention relates to a temperature pulsating air conditioner.

(Prior Art) As a conventional air conditioner of this type, there is, for example, Utility Application No. 58-51074 filed by the present applicant. This air conditioner alternately sent out air (cold air) conditioned by a heat exchanger and unconditioned outside air from a duct. For this reason, there is generally a large temperature difference between the cold air and the outside air, causing discomfort to workers due to their physical inexperience. Particularly when the outside temperature is very high, the worker feels as if he or she is being exposed to hot air, and the discomfort becomes even worse.

(Purpose of the invention) This invention is a temperature pulsating air conditioner that has the function of maintaining the temperature difference between conditioned air and non-conditioned air, which are periodically and alternately supplied from a duct, at a predetermined value that provides a pleasant feeling to the operator. For the purpose of providing.

(Structure of the device) In order to achieve the above object, this device branches the outside air introduction duct into an air conditioning duct that includes a heat exchanger and a non-air conditioning duct that does not include a heat exchanger.
The first and second air conditioning ducts are connected downstream of the heat exchanger.
The non-air conditioning duct is branched into the third and fourth branch ducts, and the non-air conditioning duct is branched into the third and fourth branch ducts.
A branch duct and a third branch duct are connected to a first duct having a discharge port, a second branch duct and a fourth branch duct are connected to a second duct having a discharge port, and a branch part of the first and second branch ducts and At the branch part of the third and fourth branch ducts, each branch duct is connected synchronously and periodically to flow conditioned air and non-conditioned air alternately and periodically into the first duct and the second duct, respectively. In a temperature pulsating air conditioner, a damper that opens and closes is provided, and a fan is provided upstream of each damper to send air to the downstream side in the air conditioning duct and in the non-air conditioning duct. A bypass duct communicates the air-conditioning side fan with the non-air-conditioned duct immediately upstream, and a damper for opening and closing the bypass duct is attached to the bypass duct, and the opening degree of the damper is adjusted between the conditioned air immediately downstream of both fans and the non-conditioned air. The configuration includes a temperature difference control device that controls the temperature difference to a predetermined value.

(Description of Embodiments) This invention will be described below based on drawings showing embodiments. The outside air introduction duct 1 is branched into an air conditioning duct 3 including a heat exchanger 2 and a non-air conditioning duct 4 not including the heat exchanger 2. The air conditioning duct 3 includes a first branch duct 5 and a second branch duct 6 downstream of the heat exchanger 2.
Furthermore, the non-air conditioning duct 4 branches into a third branch duct 7 and a fourth branch duct 8 along the way. First branch duct 5 and third branch duct 7
means a first duct 9 having a discharge port (not shown)
The second branch duct 6 and the fourth branch duct 8 each communicate with a second duct 10 having a discharge port (not shown). The branch part 11 of the first and second branch ducts 5 and 6 and the third and fourth branch ducts
The branch parts 12 of the branch ducts 7 and 8 both have a semicircular cross section, and dampers 13 and 14 are attached thereto. Both dampers 13 and 14 have the same shape, and damper 1
3, as shown in FIG. 2, consists of a shaft 13a and two semicircular blades 13b and 13c attached to the shaft at a distance and orthogonal to each other. Axis 13
a, 14a are rotatably supported on the walls of the branching parts 11, 12, and the blades 13b, 13c,
14b, 14c are the first in the branch parts 11, 12.
~Has a planar shape that matches the cross-sectional shape of the fourth branch ducts 5-8. 15 and 16 are drive motors for the dampers 13 and 14, respectively, and both motors 15,
16 is synchronously and periodically reciprocated or rotated intermittently by a control circuit (not shown). 1, the blade 13b of the damper 13 opens the first branch duct 5, the blade 13c closes the second branch duct 6, the blade 14b of the damper 14 opens the fourth branch duct 8, and the blade 14c opens the second branch duct 8. The three-branch duct 7 is closed. From this state, damper 1
3 and 14 are rotated 90 degrees synchronously by the motors 15 and 16, the first and fourth branch ducts 5 and 8 are closed by the blades 13b and 14b, and the second and third branch ducts 5 and 8 are closed by the blades 13b and 14b.
Branch ducts 6, 7 are opened by blades 13c, 14c. A fan 17 for supplying air to the downstream side is arranged in the air conditioning duct 3 between the heat exchanger 2 and the damper 13, and a fan 18 is arranged in the non-air conditioning duct 4 upstream of the damper 14. . An inflow pipe 19 and an outflow pipe 20 for heat medium are connected to the heat exchanger 2, and a two-way valve 21 is connected to the outflow pipe.
is provided. 22 is a filter.

The air conditioning duct 3 immediately downstream of the fan 17 and the non-air conditioning duct 4 immediately upstream of the damper 18 communicate with each other through a bypass duct 23, and a damper 24 is provided in the duct 23 to open and close this. .
When the damper 24 opens, a part of the conditioned air (cold air) in the air conditioning duct 3 passes through the bypass duct 23 and enters the non-air conditioning duct 4, increasing the temperature of the outside air, that is, the non-conditioning air, introduced into the duct 4. Lower the temperature to reduce the temperature difference with the conditioned air. Temperature sensors 25 and 26 are placed directly downstream of the fans 17 and 18, respectively, and their signals T1 and T2 are transmitted to the temperature difference control device 27. The temperature difference control device 27 is T2-
The opening degree of the damper 24 is controlled so that T1 becomes a predetermined value (usually 3 to 4 degrees Celsius).

A temperature control device 28 controls the opening degree of the two-way valve 21 so that the temperature T1 of the conditioned air does not fall below a predetermined temperature.

In the above configuration, the damper 13 opens the first branch duct 5 and closes the second branch duct 6, as shown in FIG. 1, and the damper 14 closes the third branch duct 7 and opens the fourth branch duct 8. When the air conditioner is on, conditioned air flows through the first duct 9 and non-conditioned air flows through the second duct 10. The dampers 13 and 14 are connected to the motor 15,
When rotated 90 degrees synchronously by 16, the first duct 9
Non-conditioned air flows into the second duct 10, and conditioned air flows into the second duct 10. Therefore, when the dampers 13 and 14 are synchronously and periodically reciprocated or rotated intermittently, air-conditioned air and non-air-conditioned air alternately flow through the first duct 9 and the second duct 10, respectively, resulting in a temperature pulsating airflow. FIG. 3 shows the temperature pulsating airflow in the first and second ducts 9 and 10, where the solid line shows the airflow in the first duct 9 and the two-dot chain line shows the airflow in the second duct 10.

As mentioned above, the temperature T2 of the non-conditioned air downstream of the fan 18 and the temperature T of the conditioned air flowing through the air conditioning duct 3
The difference α from 1 is always maintained at a predetermined value by the temperature difference control device 27 and the damper 24.

(Effects of the invention) Since this invention has the above-mentioned configuration, it has the following excellent effects.

(a) The temperature difference between the conditioned and non-conditioned air alternately supplied from the duct can be set to a predetermined value that gives a pleasant feeling to the worker, contributing to improvement in work efficiency.

(b) An energy-saving air conditioner that prevents bodily paralysis can be obtained.

(c) Even when the outside temperature rises abnormally, the air conditioning effect is not impaired.

(d) It is easy to apply to existing equipment.

[Brief explanation of the drawing]

FIG. 1 shows a plan view of an embodiment of this invention.
FIG. 2 shows a perspective view of the damper used in FIG. 1, and FIG. 3 is a diagram showing the temperature change over time of conditioned air according to this invention. 1... Outside air introduction duct, 2... Heat exchanger, 3...
...Air conditioning duct, 4...Non-air conditioning duct, 5...1st
Branch duct, 6...Second branch duct, 7...Third
Branch duct, 8...4th branch duct, 9...1st
Duct, 10... Second duct, 11, 12... Branch, 13, 14, 24... Damper, 17, 18
...Juan, 23...Bypass Daft, 27...
Temperature difference control device.

Claims (1)

[Scope of utility model registration request] Branching the outside air introduction duct into an air conditioning duct that includes a heat exchanger and a non-air conditioning duct that does not include a heat exchanger,
The air conditioning duct is connected to the first and second air conditioning ducts downstream of the heat exchanger.
The non-air conditioning duct is branched into the third and fourth branch ducts, and the non-air conditioning duct is branched into the third and fourth branch ducts.
The branch duct and the third branch duct are communicated with a first duct having a discharge port, the second branch duct and a fourth branch duct are communicated with a second duct having a discharge port,
The branch portions of the first and second branch ducts and the branch portions of the third and fourth branch ducts are provided with air conditioners for alternately and periodically flowing conditioned air and non-conditioned air into each of the first and second ducts. , a temperature pulsating air conditioner, which is provided with a damper that opens and closes each branch duct synchronously and periodically, and further includes a fan that supplies air downstream in the air conditioning duct and in the non-air conditioning duct upstream of each damper. The temperature pulsating air conditioner further includes a bypass duct that communicates the air conditioning duct immediately downstream of the air conditioning fan with the non-air conditioning duct immediately upstream of the non-air conditioning fan, and a damper that opens and closes the bypass duct. A temperature pulsating air conditioner comprising: a temperature difference control device that controls the opening degree of the damper so that the temperature difference between the conditioned air and the non-conditioned air immediately downstream of the two fans becomes a predetermined value.