JPH0349008B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a duct type air conditioner that pursues simplification of air conditioning work, reduction of equipment costs, and comfort of air conditioning.

(b) Conventional technology Although air conditioning in buildings and stores has advanced considerably, air conditioning in homes is still in its infancy. Conventional home air conditioning systems include installing air conditioning and heating equipment in each room, and in a system called central heating and cooling, hot water heated by a dedicated heating source is piped into each room. Heat is radiated and heated using a radiator installed in each room (for example, Utility Model Application Publication No. 18574/1983), and for cooling, the cooling is conducted from an outdoor cooling unit installed outdoors to an evaporator installed in each room via refrigerant piping. Therefore, a method is used to cool the air in the room by evaporating it.

In this type of central heating and cooling system,
Each room must be equipped with an indoor unit for heating and cooling, and two conduits each for hot water circulation and refrigerant circulation must be installed from the heat source unit for heating and the outdoor unit for cooling to each indoor unit. In addition, a drain pipe must be installed to discharge condensed water generated from the indoor unit in each room during cooling operation, which poses problems in terms of both equipment and piping, leading to a rise in equipment costs.

Particularly in apartment complexes such as condominiums, there are many houses that do not have space between the ceiling on the lower floor and the floor on the upper floor, so it is necessary to install piping for hot water circulation, refrigerant circulation, and drainage. Methods such as embedding sleeves in the floor in advance, or cutting and embedding the concrete floor in the case of existing houses, are used, but as the number of rooms increases, piping work becomes difficult. Furthermore, the drainage pipes had to be installed at a slight slope, making the construction extremely complicated and time consuming. Furthermore, there was a problem in that the indoor unit occupied the wall surface that could be used for furniture or calligraphy and paintings.

(c) Purpose and structure of the invention The present invention has been made in view of the above points, and an object of the present invention is to provide a duct type air conditioner that can simplify air conditioning work. In cooling mode, cold air is sent through one duct and blown into each room, and air from the room is sucked in through the other duct, and in heating mode, warm air is sent through the other duct and into each room. It is constructed so that the air from the room is blown in from one duct.

(d) Examples The present invention will be explained below based on the drawings.

FIG. 1 shows a state in which a duct type air conditioner according to the present invention is attached to an apartment, and this example shows the following:
Large room _R1 with common living room/dining room, kitchen, washroom and laundry room, Western style room _R2 , Japanese style room _R3 , Western style room _R4 , Japanese style room
It air-conditions 5 rooms of _R5 . A heat pump 1 is installed outdoors, such as on a balcony, and includes a compressor 1a driven by an engine or an electric motor. 2 is a refrigerant pipe that goes in and out of the heat pump 1; 3 is a hot water pipe that goes in and out of the heat pump 1; for example, in a gas engine, the compressor 1a
When driving the refrigerant pipe 2, the refrigerant pipe 2 is connected to the compressor 1a, and the hot water pipe 3 is connected to a water heater that utilizes the exhaust heat of the gas engine.

4 is a heat exchange unit in which a refrigerant-air heat exchanger for exchanging heat between refrigerant and air, a blower fan, an air path switching damper, and a hot water heater are built into the housing; The refrigerant pipe 2 is connected to a refrigerant air heat exchanger, and the hot water pipe 3 is connected to a hot water heater. Reference numeral 5 denotes a ventilation duct installed in the center of the room, which is composed of two ducts 5a and 5b, and an opening communicating with each duct is provided in each room. large room
There are two openings P ₁₁ and P ₁₂ in R ₁ , and an opening P ₂ in room R ₂ .
Room R ₃ has opening P ₃ , room R ₄ has opening P ₄ , room R ₅
is provided with an opening _P5 .

Each opening has two openings as shown in FIGS.
The illustrated opening _P2 is an opening _P2U communicating with one duct 5a and the other duct 5.
It consists of an opening P _2L communicating with b, and both openings P _2U ,
Both P _2L are provided with louvers 6 and 7 and a sliding shutter 8 in front of them.

It is preferable to change the direction of the opening louver depending on whether it is used for cooling or heating. For example, as shown in Fig. 3, the opening _P2U for blowing cold air is oriented horizontally,
The hot air outlet _P2L should face downward.

Next, the air conditioning operation will be explained with reference to FIGS. 4 and 5.

As can be seen from FIGS. 4 and 5, inside the heat exchange unit 4 is a refrigerant-air heat exchanger 4 that evaporates or condenses refrigerant to cool or heat the air.
a, a blower fan 4b, and an air path switching damper 4c
and a hot water heater 4d, and the air path switching damper 4c is switched between the solid line position and the broken line position.

In the cooling mode, the air path switching damper 4c is switched to the solid line position in FIG. 4, and low temperature, low pressure refrigerant is supplied from the heat pump 1 to the refrigerant air heat exchanger 4a via the refrigerant pipe 2. When this refrigerant evaporates in the refrigerant air heat exchanger 4a, it cools the air and generates cold air. This cold air is supplied by blower fan 4b
The air is blown into the upper duct 5a in the direction of the solid arrow. Since the openings of each room R ₁ to _{R 5} communicate with the upper duct 5a, cold air blows from the opening of each room (for example, the opening P _2U in room R ₂ ) as shown by the solid line arrow in FIG. put out. Cold air is blown out horizontally according to the direction of the opening, effectively cooling the room. On the other hand, the air in the room is sucked in from the other opening in each room (for example, the opening P _2L in room R ₂ ) and returns to the heat exchange unit 4 via the lower duct 5b, where it is transferred to the refrigerant air heat exchanger. It is cooled again by the blower fan 4a.
b to the upper duct 5a. Since the other rooms R ₁ , R ₃ , R ₄ , and R ₅ are exactly the same, their explanation will be omitted.

If there is a room that does not need to be air-conditioned, close the shutter 8 (see Figure 2) in that room.
Cold air is not blown into the room, and no energy is wasted.

In addition, in the cooling mode, heat pump 1
Of course, the supply valve must be closed so that hot water is not supplied to the hot water heater 4d.

In the heating mode, the air path switching damper 4c is switched to the position shown by the solid line in FIG. The high-temperature, high-pressure refrigerant gas compressed by the compressor 1a of the heat pump 1 is supplied via the refrigerant pipe 2 to the refrigerant-air heat exchanger 4a, which acts as a condenser, where the refrigerant gas is liquefied. to generate hot air. This hot air is further heated by the hot water heater 4d and blown into the lower duct 5b in the direction of the solid arrow. Each room is located in the lower duct 5b.
Since the openings R ₁ to _{R 5} are in communication, hot air is blown out from the opening in each room (for example, in room R ₂ , opening P _2L) .The warm air is blown out downward according to the direction of the opening, heating the room. be carried out effectively.

Meanwhile, the other opening in each room (e.g.
In _R2 , the air in the room is sucked through the opening _P2U ) and returns to the heat exchange unit 4 via the upper duct 5a, where it is heated again by the refrigerant air heat exchanger 4a and sent to the lower duct by the blower fan 4b. Sent out to 5b. Other rooms R ₁ , R ₃ , R ₄ , R ₅
Since the same is true for both, the explanation will be omitted.

In a room that does not require heating, the shutter 8 can be closed, and if the degree of heating needs to be reduced, the position of the shutter 8 can be adjusted.

In the present invention, the hot water heater used in the heating mode is not essential, and may be replaced with an electric heater.

Furthermore, although the above embodiments have been described with respect to an air conditioner that performs cooling and heating, the present invention can obtain the same expected effects even when air conditioning only performs cooling or heating. Therefore, the heat medium to be circulated through the heat exchange unit includes hot water in addition to the exemplified refrigerant.

Furthermore, it is practical to place the openings in each room that communicate with the two ducts one above the other, as in the example, but the invention is not limited to this. The opening for blowing out hot air may be provided separately at the lower part of the wall surface.

Further, the hot water heater may be provided inside or outside the heat exchange unit, and the heat exchange unit may be provided indoors or outdoors.

Further, the shutters of each opening may be opened and closed manually or electrically, and the air path switching duct may be switched in conjunction with the selection operation of cooling mode and heating mode.

(E) Effects of the Invention As explained above, in the present invention, two ducts are used, and in the cooling mode, cold air is blown through one duct and blown into each room, and the air in the room is discharged from the other duct. In the suction and heating mode, warm air is sent to the other duct and blown out to each room, and the air from the room is sucked in from one duct. Therefore, two ducts are attached to the partition wall and the ceiling, and each room is Heating and cooling can be done simply by providing an opening that communicates with the duct. Therefore, in the case of housing complexes such as condominiums, the work of installing air conditioning equipment becomes extremely simple, contributing to cost reduction. Furthermore, there is no need to provide an indoor unit in each room as in the conventional case, and only one heat exchange unit and an opening in each room are required, resulting in a reduction in equipment costs. Further, since the duct can be installed in a dead space that has not been used in the past, the wall surface occupied by each indoor unit in the conventional device can be effectively used for furniture or calligraphy and paintings in the present invention.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the installed state of the duct type air conditioner according to the present invention, FIGS. 2 and 3 are plan views and side views of openings provided in each room, and FIG. 4 is the duct type air conditioner according to the present invention. FIG. 5 shows the operation of the air conditioner in the heating mode. 1... Heat pump, 1a... Compressor, 2...
Refrigerant piping, 3...Hot water piping, 4...Heat exchange unit, 4a...Refrigerant air heat exchanger, 4b...Blower fan, 4c...Air path switching damper, 4d...Hot water heater, 5...Blower Duct, 5a, 5b... Duct, 6, 7... Loud, 8... Shutter, R ₁ ~
R ₅ ...Room, P ₁₁ , P ₁₂ , P ₂ (P _2U , P _2L ), P ₃ , P ₄ ,
P ₅ ...Aperture.

Claims (1)

[Scope of Claims] 1. A heat exchange unit that generates cold or hot air by cooling or heating air through heat exchange between a heat medium and air, one end of which is connected to the heat exchange unit, and one end of which is opened to each room. a first duct connected to a first opening that opens to the heat exchange unit; a second duct that has one end connected to the heat exchange unit and is connected to a second opening that opens into each room in the middle; an air path switching damper that switches the air path of cold air or warm air generated by the air conditioning system between the first duct and the second duct, and in the cooling mode,
Cool air is sent to the first duct by the air switching damper and released from the first opening of each room, and air is sucked from the second opening of each room to exchange the heat through the second duct. Returning to the unit, in the heating mode, the blower switching damper blows hot air to the second duct and releases it from the second opening of each room, and sucks air from the first opening of each room. A duct type air conditioner characterized in that the air blow switching damper is configured to switch the blower so that air is returned to the heat exchange unit via the first duct. 2. The duct type air conditioner according to claim 1, wherein the ventilation switching damper is provided within the heat exchange unit. 3. The duct type air conditioner according to claim 1 or 2, wherein the heat exchange unit has a heater in the hot air flow path in the heating mode at or near the connection port with the second duct. Device. 4. The duct type air conditioner according to claim 1 or 2, wherein the second duct has a heater on the connection end side of the heat exchange unit. 5. The duct type air conditioner according to claim 3 or 4, wherein the heater is a heater using hot water. 6. The duct type air conditioner according to claim 3 or 4, wherein the heater is a heater that utilizes heat transfer. 7. The duct type air conditioner according to any one of claims 1 to 6, wherein the first opening and the second opening are openable and closable. 8 The first opening and the second opening are provided vertically on the wall surface of each room, and the first opening and the second opening are
The duct type air conditioner according to any one of claims 1 to 7, wherein the openings have different directions of blowing air into the room. 9. The duct type air conditioner according to any one of claims 3 to 6, wherein activation and deactivation of the heater are switched in conjunction with a switching operation of the blower switching damper.