JPH05126360A - Air conditioning unit - Google Patents

Abstract

PURPOSE:To provide an air conditioning unit in which an air sound from a fan is calm and heat exchange air from the fan to a heat exchanger is fed smoothly, and which has a satisfactory heat exchange efficiency. CONSTITUTION:A fan air internal duct 24 is disposed intermediate between a heat exchange and a fan 4, said internal duel being constructed by joining divided duct members 24a, 24b comprising a longitudinally halved structure heat insulating material. A lower opening part in the internal duct 24 and the fan 4 are joined in airtightness with a lower packing 27 and a holder 29, and an upper opening part 24d in the internal duct 24 and the heat exchanger are joined in airtightness through an upper packing 28 and a mounting member 30.

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 Publication No. 2-114825. FIG. 9 is a sectional view showing a conventional air conditioning unit.

In the figure, 41 is a blower built in the lower part of the air conditioning unit, 42 is a heat exchanger built in the upper part of the air conditioning unit, and from the air outlet 41a of the blower 41 to the heat exchanger 42. Air for heat exchange is blown out. 43 is a unit outlet provided on the upper surface of the air conditioning unit, 44 is a unit suction port provided on the lower front surface of the air conditioning unit, 45 is a drain pan which is a dew tray located under the heat exchanger 42, 46 is a blower 4
1 is a dispersion plate located between the heat exchanger 42 and the heat exchanger 42, and the dispersion plate 46 disperses the air blown from the air outlet 41a of the blower 41.

The air conditioning unit of this construction has a heat exchanger 42 built in the upper part and a blower 41 built in the lower part, and the air sucked from the unit outlet 44 by the blower 41 to the heat exchanger 42 from the outlet 41a. It is blown away.
At this time, the air blown from the air outlet 41a of the blower 41 is dispersed by the dispersion plate 46 and is blown to the entire surface of the heat exchanger 42 substantially uniformly. The air that has undergone heat exchange in the heat exchanger 42 is blown out as warm air or cold air from the unit suction port 43, and the warm air or cold air is used to perform air conditioning so that the inside of the room has a desired temperature.

[0005]

In the conventional air conditioning unit as described above, there is a predetermined distance between the air outlet 41a of the blower 41 and the heat exchanger 42, and the dispersion plate 46 is located between them. Was installed. Moreover, no specific sealed air passage was formed between the blower 41 and the heat exchanger 42, and the air conditioner was in an open state, and the airtight structure was not formed.

Therefore, the blowing noise generated when the air is blown from the blower outlet 41a of the blower 41 easily leaks to the outside of the air conditioning unit, and when the blowing air passes through the dispersion plate 46, the wind noise is generated. It was generated, and these blowing noise and wind noise were noise. In addition, the air flow becomes turbulent due to the dispersion plate 46, the air for heat exchange does not flow smoothly to the heat exchanger 42, and the air blown from the blower 41 is not always efficiently used for heat exchange. It was Furthermore, when this air conditioning unit is used in a duct type air conditioning system or the like, heat is dissipated while the air sucked from the unit suction port 43 is blown from the blower 41 to the heat exchanger 42. It became a load during heat exchange, resulting in heat exchange loss.

[0007] Therefore, an object of the present invention is to provide an air conditioner unit in which the blowing noise from the blower is quiet, the air for heat exchange can be smoothly blown from the blower to the heat exchanger, and the heat exchange efficiency is high. Is.

[0008]

SUMMARY OF THE INVENTION An air conditioning unit according to the present invention includes an external air conditioning unit portion containing a heat exchanger and a blower, and an intermediate portion between the heat exchanger and the blower. An inner duct for air blower composed of a heat insulating material having a two-way structure in a direction, a lower joining means for joining a lower opening of the inner duct and a blower in an airtight state, an upper opening of the inner duct and a heat exchanger And an upper joining means for joining the above in an airtight state.

[0009]

In the air conditioning unit of the present invention, an internal air blower duct made of a heat insulating material having a two-divided structure in the longitudinal direction is disposed in the intermediate portion between the heat exchanger and the air blower, and the lower opening of this internal duct is provided. And the blower are joined in an airtight state, and the upper opening of the internal duct and the heat exchanger are joined in an airtight state.Therefore, the internal duct between the blower and the heat exchanger provides heat insulation and airtightness. A good air passage is formed, and the air for heat exchange flows as a laminar flow from the blower toward the heat exchanger in this internal duct.

[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 is 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 outlet 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.

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, the hot air or the cold air that has been blown as a laminar flow through the internal duct 24 to the heat exchanger 3 and has undergone heat exchange in the heat exchanger 3 is blown from the unit outlet 22 to the rising duct 5. Therefore, suction is smoothly performed by the blower 4, and the suction characteristic is extremely good.

Next, the internal duct of the air conditioning unit of this embodiment will be described. FIG. 6 is a perspective view showing an internal duct portion of an air conditioning unit which is an embodiment of the present invention, and FIG.
FIG. 8 is a cross-sectional view showing an internal duct of an air conditioning unit which is an embodiment of the present invention, and FIG. 8 is an enlarged cross-sectional view showing a joint portion between the internal duct of the air conditioning unit which is an embodiment of the present invention and a blower. ..

In the figure, reference numeral 24 designates an internal duct formed by joining two divided duct members 24a and 24b made of a heat insulating material, from a lower opening 24c to an upper opening 24d.
It has a predetermined shape in which the cross-sectional area gradually expands in accordance with the lateral width of the heat exchanger 3. Reference numeral 26 denotes a flat surface portion formed on the upper surface of the blower 4, and the air outlet 4a of the blower 4 is opened in the flat surface portion 26. 27 is the plane part 2 of the blower 4.
6 is a lower packing interposed at a joint between the lower opening 24c of the inner duct 24 and 28 is an upper packing interposed at a joint between the upper opening 24d of the inner duct 24 and an upper case (not shown), The heat exchanger 3 is housed in the upper case. Reference numeral 29 is a holder for fixing the lower portion of the internal duct 24 to the flat surface portion 26 of the blower 4, and 30 is a U-shaped mounting member for fixing the upper portion of the internal duct 24 to the inner rear surface of the air conditioning unit 2. Reference numeral 31 is a convex portion formed on the joint surface of one of the divided duct members 24a, and 32 is a concave portion formed on the joint surface of the other divided duct member 24b. The two divided duct members 24a and 24b are joined together.

The internal duct portion of the air conditioning unit 2 is constructed as described above, and the lower packing 27 and the holder 29 join the lower opening portion 24c of the internal duct 24 and the blower 4 in an airtight state. The upper packing 28 and the mounting member 30 join the upper opening 24d of the internal duct 24 and the heat exchanger 3 in an airtight state. Thus, the internal duct 24 is provided between the blower 4 and the heat exchanger 3.
A sealed air passage is formed to form an airtight structure, and the air blown out from the blower outlet 4a of the blower 4 receives the internal duct 24.
The air is surely blown to the entire heat exchanger 3 through the inside. Therefore, the blowing noise generated when the air is blown from the blower outlet 4a of the blower 4 is trapped in the internal duct 24.
It does not leak out of 4. Further, since the internal duct 24 surely blows air to the entire heat exchanger 3, the conventional dispersion plate is not required, and the wind noise due to the dispersion plate is not generated.
Moreover, the air for heat exchange smoothly flows as a laminar flow in the internal duct 24. Furthermore, since the internal duct 24 is made of a heat insulating material, the heat quantity of the air sucked from the unit suction port 21 does not change while being blown from the blower 4 to the heat exchanger 3.

As described above, in the air conditioning unit of the present embodiment, the external air conditioning unit portion having the heat exchanger 3 built in the upper part and the blower 4 built in the lower part, the heat exchanger 3 and the blower 4 are installed. And an internal duct 24 for blowing formed by joining divided duct members 24a and 24b made of a heat insulating material having a two-divided structure in the longitudinal direction, a lower opening 24c of the internal duct 24, and a blower. From the lower packing 27 and the holder 29 for joining the airtight state and the upper packing 28 and the mounting member 30 for joining the upper opening 24d of the internal duct 24 and the heat exchanger 3 in the airtight state. And the upper joining means.

That is, in the air conditioning unit of the present embodiment, the internal duct 24 for ventilation, which is made of a heat insulating material having a two-divided structure in the longitudinal direction, is arranged in the intermediate portion between the heat exchanger 3 and the blower 4, and the inside thereof is The lower opening 24c of the duct 24 and the blower 4 are joined in an airtight state, and the upper opening 24d of the inner duct 24 and the heat exchanger 3 are joined in an airtight state.

Therefore, in the air conditioning unit of this embodiment, the outlet 4a of the blower 4 and the heat exchanger 3 can be directly connected in a sealed state by the internal duct 24.
An air passage having good heat insulation and airtightness is formed between the blower 4 and the heat exchanger 3 by the air blower 4, and the air for heat exchange is laminar flow from the blower 4 toward the heat exchanger 3 in the internal duct 24. Flows. Therefore, the blowing noise generated when the air is blown out from the blower outlet 4a of the blower 4 does not leak to the outside of the internal duct 24, and the wind noise due to the dispersion plate does not occur.
The noise is reduced and it becomes a quiet air conditioning unit. Further, the air for heat exchange smoothly flows in the internal duct 24, and the air blown from the blower 4 is efficiently used for heat exchange.
Moreover, the internal duct 24 is made of a heat insulating material, and even when the air conditioning unit 2 is used in the duct type air conditioning system described above, the amount of heat of the air sucked from the unit suction port 21 is generated by the blower 4. Since it does not change while being blown to the exchanger 3, the load during heat exchange is reduced and the heat exchange efficiency is increased.

By the way, in the above embodiment, the air conditioner has a structure in which the blower is arranged below the heat exchanger and the blown air of the blower passes through the heat exchanger. However, the heat exchanger is provided below the blower. It is also applicable to an air conditioning unit having a structure in which 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 is provided with the air conditioning unit portion, the internal duct, the lower joining means, and the upper joining means, and has a two-divided heat insulating material in the longitudinal direction. An internal duct for blower consisting of is disposed in the intermediate portion between the heat exchanger and the blower, and the lower opening of this internal duct and the blower are joined in an airtight state, and the upper opening of the internal duct and the heat exchanger. By joining and in an airtight state, an air duct with good heat insulation and airtightness is formed by the internal duct between the blower and the heat exchanger, and heat is exchanged from the blower to the heat exchanger in this internal duct. Since the air for use flows as a laminar flow, the sound of the air blower from the blower does not leak from the internal duct, reducing the noise and making the air quiet, and the air blown from the blower is efficiently used for heat exchange. Negative when exchanging Efficiency is reduced heat exchange increases.

[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 a perspective view showing an internal duct portion of an air conditioning unit that is an embodiment of the present invention.

FIG. 7 is a cross-sectional view showing an internal duct of an air conditioning unit that is an embodiment of the present invention.

FIG. 8 is an enlarged cross-sectional view showing the joint between the internal duct and the blower of the air conditioning unit that is an embodiment of the present invention.

FIG. 9 is a cross-sectional view showing a conventional air conditioning unit.

[Explanation of symbols]

 2 Air conditioning unit 3 Heat exchanger 4 Blower 4a Air outlet 24 Internal duct 24a Divided duct member 24b Divided duct member 24c Lower opening 24d Upper opening 26 Flat part 27 Lower packing 28 Upper packing 29 Holder 30 Mounting member 31 Convex part 32 Recess

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masayuki Matsubara 3-40 Shimoburo Tegano Nakatsugawa City Gifu Prefecture Sanryo Electric Engineering Co., Ltd. Nagoya Office Nakatsugawa Branch

Claims (1)

[Claims] 1. An external air conditioner unit part having a heat exchanger and a blower built-in, and a blower made of a heat insulating material having a two-divided structure in the longitudinal direction, which is located at an intermediate part between the heat exchanger and the blower. An inner duct; a lower joining means for joining the lower opening of the inner duct and the blower in an airtight state; and an upper joining means for joining the upper opening of the inner duct and the heat exchanger in an airtight state. An air conditioning unit characterized by the above.