JPH05126393A - Air conditioner - Google Patents

Abstract

PURPOSE:To detect the air flow rate of an air conditioner in a simple structure and to simplify inspection and maintenance of detectors. CONSTITUTION:An air speed sensor 27 for detecting the air flow speed in an outlet duct 26 is arranged in the duct 26 for connecting a heat exchanger 3 to a unit blow-off port 22. An air pressure sensing pipe 28 for detecting the air pressure in an inner duct 24, an air pressure sensor 29 and a hose 30 are arranged detachably from a front surface side in the air flowing duct 24 for connecting the exchanger 3 to a blower 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning unit, and more particularly to an air conditioning unit used in a duct type air conditioning system capable of individually air conditioning each room in a house.

[0002]

2. Description of the Related Art As a conventional air conditioning unit of this type, there is a technique disclosed in Japanese Utility Model Laid-Open No. 30824/1990. FIG. 8 is a perspective view showing a state in which a front panel of the conventional air conditioning unit disclosed in the above publication is released, and this is an air conditioning unit in which an upper unit and a lower unit are integrally assembled.

In the figure, A is an upper unit, and B is a lower unit on which the upper unit A is placed. 41 is a blower built in the upper unit A, 42 is a heat exchanger built in the lower unit B, 43 is the upper unit A
Openable and closable front panel located at the front of the lower unit, 44 is a closable front panel located at the front of the lower unit B, 45
Is a unit outlet provided on the front panel 43 of the upper unit A, 46 is a unit inlet provided on the front panel 44 of the lower unit B, 47 is a refrigerant pipe connected to the heat exchanger 42, and 48 is A drain pan, which is a dew tray located under the heat exchanger 42, 49 is a drain pipe for discharging the drain accumulated in the drain pan 48.

The air conditioning unit of this structure is divided into an upper unit A and a lower unit B, and a blower 41
The upper unit A containing the heat exchanger 42 and the lower unit B containing the heat exchanger 42 are integrated to form an air conditioning unit. Then, the air sucked from the unit suction port 46 is heat-exchanged by the heat exchanger 42, and is blown out as warm air or cold air from the unit air outlet 45 by the blower 41. Air conditioning is performed to reach the temperature.

And, in this kind of air conditioning unit,
Usually, various detectors, sensors, etc. (not shown) are appropriately arranged to perform various controls. For example, Japanese Patent Publication 60-
Japanese Patent No. 47497 discloses a case where an air conditioning unit is used in a duct type air conditioning system. In this publication, a terminal air volume control unit is arranged at each terminal of a plurality of air passages, and each air passage is provided. An air flow rate detector that detects the passing air flow rate and a detector that detects the position of the throttle valve that controls the passing air flow rate of each wind passage are provided respectively. There is disclosed a technique for maintaining the set air volume.

[0006]

However, in the conventional air conditioning unit as described above, a sensor is required for each terminal air volume unit in order to allow each terminal air volume unit to have a wind speed detecting function. The entire system including the mechanism became large, resulting in high cost. Also, maintenance and inspection work for each sensor was troublesome.

Therefore, an object of the present invention is to provide an air conditioning unit that can detect the air flow rate of the air conditioning unit with a simple structure and that can easily perform maintenance and inspection work for each detection unit.

[0008]

An air conditioning unit according to the present invention comprises an external air conditioning unit section containing a heat exchanger and a blower, and an outlet duct connecting the heat exchanger and the unit outlet. Detachably arranged from the front side, wind speed detecting means for detecting the wind speed in the outlet duct, and an internal duct for air blow connecting the heat exchanger and the air blower is detachably arranged from the front side, And a wind pressure detecting means for detecting the wind pressure in the internal duct.

[0009]

In the air conditioning unit of the present invention, the outlet duct connecting the heat exchanger and the unit outlet is provided with wind velocity detecting means for detecting the wind velocity in the outlet duct, and the blower connecting the heat exchanger and the blower. Since the wind pressure detecting means for detecting the wind pressure in the internal duct is detachably arranged from the front side, the two air detecting units can properly detect the air volume of the air conditioning unit and the air can be detected. Maintenance and inspection work of both detection means can be performed from the front side of the harmony unit.

[0010]

EXAMPLES Examples of the present invention will be described below.

FIG. 1 is a perspective view showing the overall construction of a duct type air conditioning system in which an air conditioning unit according to an embodiment of the present invention is used. FIG. 2 shows an air conditioning unit according to an embodiment of the present invention. It is a perspective view which shows the driving system of the duct type air conditioning system currently used.

In the figure, reference numeral 1 is an outdoor unit installed outdoors, and 2 is an air conditioning unit also installed outdoors. The outdoor unit 1 and the air conditioning unit 2 are integrated into a heat pump type. It constitutes an air conditioner. 3 is a heat exchanger incorporated in the air conditioning unit 2, 4 is a blower incorporated in the air conditioning unit 2, and the blower 4 functions as a circulation source of air for air conditioning. 5
Is an external standing duct installed upright on the air conditioning unit 2 and arranged along the outer wall of the building.
The air that has undergone heat exchange is blown through the. 6 is a octopus-shaped ceiling duct connected to the rising duct 5, 7 is a ceiling outlet formed at the end of the ceiling duct 6, 8 is a floor outlet similarly formed at the end of the ceiling duct 6, Reference numeral 9 denotes a VAV (variable air volume) damper unit incorporated in each of the ceiling air outlet 7 and the floor air outlet 8, and the amount of air blown out can be adjusted by appropriately changing the opening / closing degree of the damper. Reference numeral 10 denotes a suction duct arranged under the floor or the like, and the indoor air is guided to the outdoor air conditioning unit 2 through the suction duct 10. 1
Reference numeral 1 is a ventilation air conditioner that ventilates indoors and outdoors while exchanging heat using the temperature of the indoor air, and Rosnai (registered trademark) manufactured by Mitsubishi Electric is used. Reference numeral 12 is a refrigerant pipe that connects the outdoor unit 1 and the heat exchanger 3 of the air conditioning unit 2, 13 is a center controller that controls the entire duct type air conditioning system, and the VAV damper unit 9 adjusts the air volume and sets the temperature. , Switching operation modes, etc. Reference numeral 14 denotes a room controller that adjusts the air volume and sets the temperature by each VAV damper unit 9 for each room.

In the duct type air conditioning system of this construction, both the outdoor unit 1 and the air conditioning unit 2 are arranged outdoors. Then, the hot air or the cold air after the heat exchange, which is blown from the air conditioning unit 2, passes through the rising duct 5 and the ceiling duct 6, and is blown from the ceiling outlet 7 and the floor outlet 8 to each room, so that each indoor Air conditioning of the room is performed.
The air conditioned in the room passes through the suction duct 10, returns to the air conditioning unit 2 again, and is heat-exchanged to the rising duct 5.
Is blown out. That is, in the duct type air conditioning system device of the present embodiment, the air conditioning unit 2 (blower 4 → heat exchanger 3) → starting duct 5 → ceiling duct 6 → ceiling outlet 7 and floor outlet 8 → indoor → suction Air circulates in the order of the duct 10 and the air conditioning unit 2. Further, when hot air or cold air for air conditioning is blown from the ceiling outlet 7 and the floor outlet 8 to each room, it is blown by the VAV damper units 9 provided in the ceiling outlet 7 and the floor outlet 8, respectively. The air volume is adjusted appropriately and the room temperature is adjusted for each room. Furthermore, the ventilation air conditioner 11 such as Rosnai supplies fresh air outdoors while exchanging heat using the temperature of air in the room, and discharges dirty air inside the room to the outside. And ventilation to the outside.

Although both the air conditioning unit 2 and the outdoor unit 1 of this embodiment are installed outdoors, their installation positions can be appropriately selected as shown in FIG. FIG. 3 is a plan view showing installation positions of an air conditioning unit and an outdoor unit that are an embodiment of the present invention.

In the figure, reference numeral 15 is an outer wall of the building, and the air conditioning unit 2 is arranged along the outer wall 15. The outdoor unit 1 is installed near the air conditioning unit 2.
Is installed. The positional relationship between the air conditioning unit 2 and the outdoor unit 1 can be appropriately changed in consideration of the shape of the installation space and the like, and the outdoor unit 1 is provided on the front side of the air conditioning unit 2.
Alternatively, the outdoor units 1 may be arranged side by side on the right or left side of the air conditioning unit 2. Therefore, for example, even in a place having a small gap with the adjacent house, the installation can be performed by appropriately changing the arrangement of the outdoor unit 1 with respect to the air conditioning unit 2. In this case,
The refrigerant pipe that connects the heat exchanger of the air conditioning unit 2 and the heat exchanger of the outdoor unit 1 to form a predetermined refrigerant cycle is
Depending on the installation positional relationship between the air conditioning unit 2 and the outdoor unit 1, an optimum refrigerant pipe is constructed each time.

Next, the air conditioning unit of this embodiment will be described in detail. First, the internal structure of the air conditioning unit will be described. FIG. 4 is a front view showing the internal structure of the air conditioning unit which is an embodiment of the present invention, and FIG. 5 is a side view showing the internal structure of the air conditioning unit which is an embodiment of the present invention.

In the figure, reference numeral 21 is a unit suction port provided in the lower rear portion of the air conditioning unit 2, and this unit suction port 21 is directly connected to the suction port of the blower 4.
Further, the suction duct 10 is connected to the unit suction port 21 (see FIG. 1). Reference numeral 22 is a unit outlet provided on the upper surface of the air conditioning unit 2, and the rising duct 5 is connected to the unit outlet 22 (see FIG. 1).
Reference numeral 23 is suction air that is sucked through the suction duct 10 that is provided under the floor, and the suction air 23 is directly sucked from the unit suction port 21 to the suction port of the blower 4. 24
Is an internal duct made of a heat insulating material, and the air blown from the blower 4 is blown to the heat exchanger 3 through the internal duct 24. Reference numeral 25 is a heat insulating member for closely fixing the blower 4 to the air conditioning unit 2. 26 is an outlet duct that connects the heat exchanger 3 and the unit outlet 22, and 27 is an outlet duct 2.
6 is a wind speed sensor that detects the wind speed inside the outlet duct 2
It is arranged at a substantially central portion of 6. 28 is the internal duct 24
A wind pressure detection pipe inserted so that the tip portion is located therein, 29 is a wind pressure sensor that detects the wind pressure in the internal duct 24, 30 is a hose that connects the wind pressure detection pipe 28 and the wind pressure sensor 29, and 31 is a wind speed sensor 27 and wind pressure sensor 2
It is a control box in which a control circuit and the like for calculating the air flow rate based on the signal from 9 are housed.

The air conditioning unit of this construction has a heat exchanger 3 built in at the upper part and a blower 4 at the lower part, and an air flow is provided by an internal duct 24 between the heat exchanger 3 and the blower 4. The road is formed. Moreover, the unit suction port 21 and the suction port of the blower 4 are directly connected to each other, and when the air conditioning unit 2 is used in the duct type air conditioning system, the suction air from the suction duct 10 that is piped under the floor or the like is used. 23 can be directly sucked by the blower 4. Then, hot air or cold air that has been blown as a laminar flow to the heat exchanger 3 through the internal duct 24 and has undergone heat exchange in the heat exchanger 3 passes through the outlet duct 26 and is blown from the unit outlet 22 to the rising duct 5. To be done. Therefore, suction is smoothly performed by the blower 4, and the suction characteristic is extremely good. In addition,
In the air conditioning unit 2, the air volume is calculated based on the signals from the wind speed sensor 27 and the wind pressure sensor 29, and the result of the calculation is used to control the blower 4 and the like.

Next, the mounting of the wind speed and wind pressure detecting portion of the air conditioning unit of this embodiment will be described. FIG. 6 is an exploded perspective view showing a mounted state of a wind speed sensor of an air conditioning unit according to an embodiment of the present invention, and FIG. 7 is an exploded view showing a mounted state of a wind pressure detecting portion of an air conditioning unit according to an embodiment of the present invention. It is a perspective view.

In the figure, reference numeral 32 denotes a mounting member for supporting the wind speed sensor 27 in the outlet duct 26. The wind speed sensor 27 is mounted on the tip of the mounting member 32 in advance, and the wind speed sensor 27 is inserted through the mounting hole 26a. By fixing the mounting member 32 with a screw, the wind speed sensor 27 can be installed in the outlet duct 26.
Will be located inside. Reference numeral 33 is a mounting member for mounting the wind pressure detecting pipe 28 on the internal duct 24. The wind pressure detecting pipe 28 is mounted on the mounting member 33 in advance, the tip of the wind pressure detecting pipe 28 is inserted from the mounting hole 24a, and the mounting member 33 is screwed. By stopping, the tip portion of the wind pressure detecting pipe 28 is positioned inside the internal duct 24. A hose 30 is connected to the other end of the wind pressure detection pipe 28, and a wind pressure sensor 29 is connected to the other end of the hose 30 (see FIG. 4).

The wind speed sensor 27 of the air conditioning unit 2
The wind pressure detection pipe 28 is attached as described above, and both are attached to the outlet duct 26 and the internal duct 24 from the front side of the air conditioning unit 2 in a detachable manner. Therefore, by making a front panel (not shown) located on the front side of the air conditioning unit 2 detachable, maintenance work of the wind speed sensor 27 and the wind pressure detection pipe 28 can be performed only by removing the front panel. ..

As described above, in the air conditioning unit of this embodiment, the heat exchanger 3 is built in the upper part and the blower 4 is built in the lower part, and the external air conditioning unit part, the heat exchanger 3 and the unit blower. A wind speed sensor 27, which is a wind speed detecting means that is detachably disposed from the front side in an outlet duct 26 that connects the outlet 22, and that detects the wind speed in the outlet duct 26, the heat exchanger 3 and the blower 4. A wind pressure detecting pipe 28, a wind pressure sensor 29, and a hose 30, which are wind pressure detecting means for detecting the wind pressure in the internal duct 24, are provided detachably from the front side of the internal duct 24 for blowing air to be connected. ..

That is, in the air conditioning unit of this embodiment, the wind speed sensor 2 for detecting the wind speed in the outlet duct 26 is connected to the outlet duct 26 connecting the heat exchanger 3 and the unit outlet 22.
7 (wind speed detecting means), and the wind pressure detecting pipe 28 for detecting the wind pressure in the internal duct 24, and the wind pressure sensor 2 in the internal duct 24 for air blow connecting the heat exchanger 3 and the blower 4.
9. A hose 30 (wind pressure detecting means) is detachably arranged from the front side.

Therefore, in the air conditioning unit of this embodiment, the wind speed sensor 27 (wind speed detecting means), the wind pressure detecting pipe 28, the wind pressure sensor 29, the hose 30 (wind pressure detecting means).
It is possible to properly detect the air volume of the air conditioning unit with the two detection means. Therefore, even when this air conditioning unit 2 is used in a duct type air conditioning system, it is not necessary to dispose a sensor for air velocity detection in each terminal air volume unit as in the conventional case, and the air volume detection mechanism is simple. Since it can be realized by the configuration, the whole system becomes simple and the cost becomes low as a result. Moreover, from the front side of the air conditioning unit 2, the wind speed sensor 27 (wind speed detecting means) and the wind pressure detecting pipe 2
8. Since the maintenance and inspection work of both the wind pressure sensor 29 and the hose 30 (wind pressure detection means) can be performed, the maintenance and inspection work becomes easy.

By the way, in the above embodiment, the air conditioner having the structure in which the blower is arranged below the heat exchanger and the blown air of the blower passes through the heat exchanger has been described. However, as described in the conventional example, It is naturally applicable to an air conditioning unit having a structure in which a heat exchanger is arranged below the blower and suction air from the unit suction port flows through the heat exchanger to the suction port of the blower.

[0026]

As described above, the air conditioning unit of the present invention comprises an air conditioning unit section, wind speed detecting means, and
Wind pressure detecting means, wind speed detecting means for detecting the wind speed in the outlet duct in the outlet duct connecting the heat exchanger and the unit outlet, and in the internal duct for air blowing connecting the heat exchanger and the blower Since the wind pressure detecting means for detecting the wind pressure in the internal duct is detachably arranged from the front side, the air volume of the air conditioning unit can be properly detected by the two detecting means, so the entire system including the air volume detecting mechanism. Is simple and the cost is low, and since the maintenance and inspection work of both detecting means can be performed from the front side of the air conditioning unit, the maintenance and inspection work becomes easy.

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall configuration of a duct type air conditioning system in which an air conditioning unit according to an embodiment of the present invention is used.

FIG. 2 is a perspective view showing an operation system of a duct type air conditioning system in which an air conditioning unit according to an embodiment of the present invention is used.

FIG. 3 is a plan view showing installation positions of an air conditioning unit and an outdoor unit that are an embodiment of the present invention.

FIG. 4 is a front view showing the internal structure of an air conditioning unit that is an embodiment of the present invention.

FIG. 5 is a side view showing an internal structure of an air conditioning unit which is an embodiment of the present invention.

FIG. 6 is an exploded perspective view showing a mounted state of a wind speed sensor of an air conditioning unit which is an embodiment of the present invention.

FIG. 7 is an exploded perspective view showing a mounted state of a wind pressure detection unit of the air conditioning unit which is an embodiment of the present invention.

FIG. 8 is a perspective view showing a state in which a front panel of a conventional air conditioning unit is released.

[Explanation of symbols]

 2 Air conditioner unit 3 Heat exchanger 4 Blower 21 Unit suction port 22 Unit outlet 24 Internal duct 24a Mounting hole 26 Outlet duct 26a Mounting hole 27 Wind speed sensor 28 Wind pressure detection pipe 29 Wind pressure sensor 30 Hose 31 Control box 32 Mounting member 33 Mounting Element

Front page continued (72) Inventor Masayuki Matsubara 3-40 Shimoburo Tegano, Nakatsugawa City, Gifu Sanryo Electric Engineering Co., Ltd. Nagoya Office Nakatsugawa Branch

Claims (1)

[Claims] 1. An external air conditioner unit part containing a heat exchanger and a blower, and an outlet duct connecting the heat exchanger and the unit outlet so as to be detachable from the front side, and the outlet duct. A wind speed detecting means for detecting the wind speed inside, and a wind pressure detecting means for detecting the wind pressure in the internal duct, which is detachably arranged from the front side to the internal duct for air blow connecting the heat exchanger and the blower. An air conditioning unit comprising: