JPH03217731A - Air conditioner equipped with oxygen enriching device - Google Patents

Abstract

PURPOSE:To supply pure oxygen enriched air together with air conditioned air by a method wherein an oxygen enriching device which has a device to generate a pressure difference on primary and secondary sides of an oxygen enriching film and a feed pipe to take out oxygen enriched air from the secondary side is provided, and the tip of the feed pipe is opened at the indoor side room. CONSTITUTION:On the front and rear outer surfaces of a formwork shaped frame, an oxygen enriching film 16 which is made of a polymer macromolecule resin film is stretched to form a separation film module 17, and on one side of the formwork shaped frame, a take-out port 21 for oxygen enriched air, which communicates with a space on the secondary side, is provided. A large number of separation film modules 17 are arranged in parallel in a case 20. To the take-out port 21, an oxygen enriched air feed pipe 18 is connected, and in the feed pipe 18, a vacuum pump 22 is inserted. By operation of the vacuum pump 22, the secondary side of the oxygen enriching film 16 is made to have a lower pressure than the primary side, and outdoor air which is fed in the case 20 is separated into oxygen enriched air and nitrogen enriched air by a fan for film module 28. At the tip of the feed pipe 18 which extends from the discharge side of the vacuum pump 22 to an indoor side room 2, a rod shaped nozzle 25 is provided, the oxygen enriched air is fed into the room together with air conditioned air.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to an air conditioner, more specifically, an air conditioner comprising an indoor chamber housing a user side heat exchanger and an outdoor chamber housing a heat source side heat exchanger. , relates to an oxygen-enriching equipment air conditioner that can increase indoor oxygen concentration.

(Prior art) Conventionally, this type of oxygen-enriching equipment air conditioner was disclosed in Japanese Patent Application Laid-Open No.
-41732, and as shown in Figures 8 and 9, an indoor heat exchanger (C) and an indoor blower (D) are installed on the indoor side (B) of an integrated air conditioner (A), and Outdoor side (E)
A refrigeration compressor (F), an outdoor blower (G), and an outdoor heat exchanger (H) are installed in the above-mentioned area, and a PSA type oxygen enrichment machine (J) using zeolite that adsorbs nitrogen under high pressure is installed in the above-mentioned area. The air compressor (L) installed in the integrated air conditioner (A) takes in the heat-exchanged indoor air from the air intake pipe (K), and is inserted into the air intake pipe (K). Pressurize,
Oxygen-enriched air is obtained by adsorbing nitrogen to zeolite (P) filled in adsorption cylinders (M) and (N). The oxygen-enriched air obtained in this manner is then supplied into the room via an enrichment pipe (Q).

(Problems to be Solved by the Invention) By the way, in the above-described oxygen-enriched equipment air conditioner, nitrogen is adsorbed on the zeolite (P) by pressurization to obtain oxygen-enriched air. The zeolite (P) easily absorbs moisture, and when it absorbs moisture, it becomes a fine powder and its nitrogen adsorption properties and capacity deteriorate. It is necessary to dry up. Therefore, since the oxygen-enriched air obtained by adsorbing nitrogen on the zeolite (P) is dry, in the winter when the air is dry, the problem is that the humidity becomes even lower, causing discomfort to people staying indoors. There was,
Furthermore, even if pre-drying is performed using a moisture absorbent, if the pre-drying is insufficient, the zeolite (P) will become fine powder due to moisture absorption and will be blown into the room together with the oxygen-enriched air. This caused the problem of increased dust concentration in the indoor air.

Furthermore, by continuing the operation, the zeolite} (P
), nitrogen, oxygen, etc. accumulate in the adsorption cylinders (M) and (N). It is necessary to desorb the nitrogen adsorbed on the zeolite (P) and release the nitrogen-enriched air to the outside, and it is necessary to provide a switching valve (T) to switch between pressurization and depressurization, which leads to the problem of a complicated structure. There it was.

The present invention was made in view of the above-mentioned problems, and its purpose is to focus on an oxygen-enriching membrane that can separate oxygen-enriched air and condense water vapor at the same time. By obtaining oxygen-enriched air, the oxygen concentration of the indoor air can be increased, while a humidifying effect can be expected in winter, and clean oxygen-enriched air with less dust and germs can be supplied together with the conditioned air. At the point.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides an indoor chamber (2) accommodating a utilization side heat exchanger (4), and a heat source side heat exchanger (4).
6) an air conditioner comprising an outdoor chamber (3) containing an oxygen-enriched membrane for separating the atmosphere into oxygen-enriched air and nitrogen-enriched air; (16) and the oxygen enrichment membrane (16).
) pressure means for creating a pressure difference between the primary side pressure and the secondary side pressure, and an oxygen-enriched air supply pipe (18) for taking out oxygen-enriched air from the secondary side of the oxygen-enriched membrane (16). An oxygen enricher (19) having an oxygen enrichment device (19) is provided, and the tip of the oxygen enriched air supply pipe (18) is opened into the indoor chamber (2).

Further, it is preferable that the tip of the oxygen-enriched air supply pipe (18) be opened in the front part in the direction of indoor air circulation with respect to the user-side heat exchanger (4) housed in the indoor chamber (2).

(Function) Separates air into oxygen-enriched air and nitrogen-enriched air, and
Using an oxygen-enriched membrane (16) that allows water vapor to pass through but does not allow dust or germs to pass through, oxygen-enriched air is taken out from the secondary side of the oxygen-enriched membrane (16), and the oxygen-enriched air supply pipe (
18), oxygen-enriched air can be supplied to the indoor chamber (2), and the oxygen concentration in the room can be improved.

In addition, since the humidity of oxygen-enriched air increases as it is separated from nitrogen-enriched air, it can contribute to the humidification effect of humidifying indoor air in winter without installing a humidifier.
Since there is no dust or germs mixed into the oxygen-enriched air, clean air can be supplied indoors.

(Example) The oxygen-enriching equipment air conditioner shown in FIG. Indoor chamber (2)
and an outdoor side chamber (3), and a user side heat exchanger (4) and an indoor fan (5) are provided in the indoor side chamber (2), and
A heat source side heat exchanger (6), an outdoor blower (7), and a compressor (8) are arranged in the outdoor room (3). and,
The heat source side heat exchanger (6) and the usage side heat exchanger (4) are connected to the compressor (8) housed in the outdoor side chamber (3) via refrigerant piping (not shown), and the Compressor (8)
By circulating the refrigerant from the heat source side heat exchanger (6) and the user side heat exchanger (4), and operating the indoor blower (5) and the outdoor blower (7), the indoor suction port (9) from the indoor chamber (2) through the filter (10).
) The air entering the room is heat-exchanged by the user-side heat exchanger (4), and the heat-exchanged air is supplied into the room from the indoor air outlet (11), thereby making it possible to air-condition the room.

Note that (12) is an outdoor intake port that takes outdoor air into the outdoor room (3), (13) is an outdoor outlet, and (14) is a drain that receives condensate condensed in the user-side heat exchanger (4). The drain tray (15) is a drain pipe for discharging the drain from the drain tray (14) to the outside of the air conditioner main body (1).

Therefore, in the outdoor chamber (3), an oxygen enricher (19) consisting of the following configuration, that is, an oxygen enrichment membrane (16) that separates the atmosphere into oxygen enriched air and nitrogen enriched air is installed. a separation membrane module (17), a pressure means for creating a pressure difference between the primary side pressure and the secondary side pressure of the oxygen enriching membrane (16), and the secondary side pressure of the oxygen enriching membrane (16). An oxygen enricher (19) having an oxygen-enriched air supply pipe (18) for taking out oxygen-enriched air from the side is installed, while the tip of the oxygen-enriched air supply pipe (18) is connected to the interior of the room. It was opened into the side chamber (2).

Specifically, for example, an oxygen enrichment membrane (16) made of a silicone-based or fluorine-based polymer resin film is pasted on the front and back outer surfaces in the thickness direction of a framework-like frame (not shown) having a predetermined thickness, and a box-shaped frame is formed. forming a separation membrane module (17);
The separation membrane module (1
In 7), the oxygen-enriched air outlet (21) communicates with the secondary space provided inside each of the oxygen-enriched membranes (16).
We will set up the following. As shown in FIG. 2, the separation membrane modules (17) formed in this way are arranged in large numbers at intervals in parallel in a rectangular cylindrical case (20) that is open at both ends. Yes, the above case (20)
Outdoor air is supplied from one open side of the oxygen enrichment membrane (
16), the outdoor air is separated into oxygen-enriched air and nitrogen-enriched air.

An oxygen-enriched air supply pipe (18) (hereinafter referred to as the supply pipe) is connected to the outlet (21), and a vacuum pump constituting the pressure means is connected to the supply pipe (18). (22) is inserted. The suction side of the vacuum pump (22) communicates with the outlet (21), and by driving the vacuum pump (22), the secondary side of the oxygen enrichment membrane (16) is brought to a lower pressure than the primary side. to create a pressure difference between the primary side and the secondary side, and the outdoor chamber (3)
The outdoor air supplied into the case (20) is separated into oxygen-enriched air and nitrogen-enriched air by a membrane module blower (28) disposed in the membrane module. Further, a rod-shaped nozzle (25), which will be described later, is provided at the tip of the supply pipe (18) extending from the discharge side of the vacuum pump (22) to the indoor chamber (2), so that the supply pipe (18) The oxygen-enriched air taken out from the secondary side of the oxygen-enriched membrane (16) through the
It is supplied into the room together with the conditioned air that is supplied into the room from the indoor chamber (2).

In the embodiment shown in FIG. 1, a rod-shaped nozzle (25) provided with a large number of outlets (24) shown in FIG. 3 is connected to the tip of the supply pipe (18). This rod-shaped nozzle (
25) as the filter (10) in the indoor chamber (2)
The heat exchanger (4) is arranged at the rear side of the heat exchanger (4) and immediately before the user-side heat exchanger (4), and oxygen-enriched air is supplied to the air inlet side of the heat exchanger (4). In addition, if the outer diameter of the rod-shaped nozzle (25) is large and interferes with heat exchange of indoor air, a plurality of rod-shaped nozzles (25) with small diameters may be arranged to disperse the oxygen-enriched air. It is best to make it blow out. Further, in FIG. 3, (26) is a refrigerant flow pipe of the user-side heat exchanger (4) that passes through a large number of fins (27).

Furthermore, the filter (10) disposed near the indoor intake port (9) is provided with an oxygen concentration sensor (10) for detecting oxygen concentration.
29), a control section (30) is provided outside the outdoor chamber (3), and the oxygen concentration sensor (29) is installed.
Oxygen-enriched air can be supplied indoors based on the oxygen concentration detected by the system.

Therefore, when the control section (30) is used as described above, a predetermined oxygen concentration is set in the control section (30), as shown in the control flow diagram shown in FIG. In the control section (30), three operating modes can be selected: an operating mode of only the oxygen enricher (19), an operating mode of only the air conditioner, and an operating mode of the air conditioner/oxygen enricher. When selecting the operation mode of only the oxygen enricher (19), a target indoor oxygen concentration is set, and the indoor oxygen concentration detected by the oxygen concentration sensor (29) is the target indoor oxygen concentration set value. If it is lower, the oxygen enricher (19) and the indoor fan (5) are operated. Further, when the indoor oxygen concentration is higher than the target indoor oxygen concentration setting value, the oxygen enricher (19) and the indoor fan (5) are stopped. Therefore, for example, in intermediate seasons such as spring and autumn, when heating and cooling are not performed, based on the oxygen concentration detected by the oxygen concentration sensor (29),
Oxygen-enriched air can be supplied indoors under the control of the control unit (30), and the vacuum pump (22) and the separation membrane blower (28) are driven to supply the oxygen-enriched air (1).
9) is driven, the indoor side blower (5) is always driven, and the oxygen-enriched air is blown into the room without staying in the indoor side chamber (2).

In addition, the compressor (8) and the indoor and outdoor blower (5)
(7) to perform air conditioning operation, that is, the compressor (8) is driven, and refrigerant is supplied from the compressor (8) to each heat exchanger (4). When the indoor air and outdoor air blowers (5) and (7) are driven to circulate indoor air and outdoor air in the indoor chamber (2) and the outdoor chamber (4), respectively, the indoor air is passed through the indoor air intake port (9) through the filter ( 10) and enters the indoor chamber (2), passes through the gaps between the fins (27) of the user side heat exchanger (4) and exchanges heat, and after the heat exchange, enters the indoor air outlet (11).
), while outdoor air enters the outdoor room (3) from the outdoor intake port (12), exchanges heat with the heat source side heat exchanger (6), and is supplied to the outdoor air outlet (13). ) is blown out to the outside. At this time, if the oxygen concentration detected by the oxygen concentration sensor (29) is lower than the concentration set in the control section (30), the control section (30)
0), the vacuum pump (22) and the membrane module blower (28) are driven, and the outdoor suction port (
Outdoor air entering the outdoor room (3) from 12) is supplied into the case (20) by the membrane module blower (28), and is then supplied to the secondary space provided inside the oxygen enrichment membrane (16). On the other hand, the vacuum pump (
22), the pressure in the secondary space provided inside the oxygen-enriching membrane (16) is lower than the pressure on the outside, that is, the primary side. Oxygen molecules and water vapor molecules in the supplied indoor air pass through the oxygen enrichment membrane (16), and oxygen-enriched air is obtained in the secondary space of the enrichment membrane (16). Air passes from the outlet (21) through the supply pipe (18), and from the numerous outlets (24) of the rod-shaped nozzle (25) provided at its tip to the heat exchanger (4). The indoor air is supplied to the air inlet side of the room, passes through the filter (10) from the indoor air inlet (9), joins with the indoor air that enters the indoor room (2), and undergoes heat exchange in the user side heat exchanger (4). After that, it is supplied into the room from the indoor air outlet (11) to improve the oxygen concentration in the room.

If the oxygen concentration detected by the oxygen concentration sensor (29) is higher than the concentration set in the control section (30), the vacuum pump (22) and the membrane module The drive of the air blower (28) is stopped.

Therefore, it is possible to avoid wasting power by increasing the oxygen concentration in the room unnecessarily.

In addition, the oxygen enrichment membrane (16) has the property of separating air into oxygen enriched air and nitrogen enriched air, and allowing water vapor to pass through, while preventing dust and germs from passing through. The humidity of the oxygen-enriched air increases as the nitrogen-enriched air is separated, making it possible to humidify indoor air without installing a humidifier. It does not cause any discomfort due to a decrease in the humidity of the indoor air, and it also prevents dust from entering the oxygen-enriched air.
It is hygienic because it can supply clean air into the room without contaminating bacteria. In addition, oxygen-enriched air can be obtained continuously by using the vacuum pump (22) to constantly set the pressure on the secondary side of the oxygen-enriched membrane (16) to be lower than the pressure on the primary side to create a pressure difference. Unlike conventional oxygen enrichment machines using zeolite, there is no need for a valve device to reverse the pressure difference between the primary and secondary pressures of the zeolite.
The overall structure becomes simpler.

Further, the supply pipe (18) is connected to the user side heat exchanger (4).
Since the air is opened just before the vacuum pump (22) and oxygen-enriched air is supplied into the room after being heat-exchanged and conditioned by the user-side heat exchanger (4), the oxygen-enriched air is supplied to the room by the vacuum pump (22).
Even if the air is heated to about 100°F, the oxygen-enriched air is cooled by the user-side heat exchanger (4) especially during cooling operation, so by supplying the cooled oxygen-enriched air indoors, This is convenient because the temperature does not increase, and excess moisture in the humid oxygen-enriched air is condensed in the user-side heat exchanger (4) and becomes drain in the drain tray (
14) through the drain pipe (15) and can be discharged to the outside for treatment.

Although an integrated air conditioner including an indoor chamber (2) and an outdoor chamber (3) has been described above, it may be of a separate type as shown in FIG.

The indoor unit (31) arranged indoors and the outdoor unit (32) arranged outdoors are connected by liquid refrigerant pipes (33) and gas refrigerant pipes (34), and these refrigerant pipes (33)
) (34), the supply pipe (18) is arranged along it.

As shown in FIG. 6, the outdoor unit (32) is equipped with a compressor (8), a heat source side heat exchanger (6), and an outdoor blower (7), and the liquid refrigerant pipe ( 33) to the heat source side heat exchanger (6), and the gas refrigerant pipe (34) to the suction side of the compressor (8), and connect the gas refrigerant pipe (34) to the suction side of the compressor (8). (8) and the heat exchanger (
6) is connected.

Further, the outdoor unit (32) shown in FIG. 6 is provided with a pressurized oxygen enricher (19). This oxygen enrichment machine (19), like the above-mentioned separation membrane module (17), has a frame-like frame (not shown) having a predetermined thickness, and has a silicon-based or fluorine-based polymer resin on the front and back outer surfaces in the thickness direction. A box-shaped separation membrane module (17) is formed by pasting an oxygen enrichment membrane (16) made of film, and the separation membrane module (17) is placed in a sealed box-shaped case as shown in FIG. (37) are arranged parallel to each other at intervals, and on one side of the frame of the separation membrane module (17), each of the oxygen-rich cells in the separation membrane module (17) is arranged. An oxygen-enriched air outlet (21) communicating with the secondary space provided inside the chemical membrane (16) is provided,
The supply pipe (18) is connected to the outlet (21).

Further, a pressurized air introduction pipe (39) for introducing outdoor air into the case (37) is opened in one side wall of the sealed case (37).
39) includes a pressurizing pump (36) constituting the pressure means.
is interposed.

By operating the pressurizing pump (38), the inside of the case (37) is pressurized and the outside pressure, that is, the primary side pressure is applied to the secondary space provided inside the oxygen enriched membrane (16). The pressure is increased to create a pressure difference between the primary pressure and the secondary pressure, and the outdoor air supplied by the pressurizing pump (36) is separated into oxygen-enriched air and nitrogen-enriched air. It is.

Further, on the wall opposite to one side wall of the case (37) to which the pressurized air introduction pipe (39) is connected, there is an exhaust for discharging nitrogen-enriched air to the outside of the outdoor unit (32). A wind pipe (40) is connected. Note that (41) is a filter.

(Effect of the invention) As described above, according to the present invention, the user side heat exchanger (4)
An air conditioner comprising an indoor chamber (2) accommodating a heat source side heat exchanger (6), and an outdoor chamber (3) accommodating a heat source side heat exchanger (6), the air conditioner comprising: between a separation membrane module (17) having an oxygen-enriched membrane (16) that separates enriched air and nitrogen-enriched air, and the primary and secondary pressures of the oxygen-enriched membrane (16); An oxygen enrichment machine (19) is provided which has a pressure means for creating a pressure difference between the oxygen enrichment membrane (16) and an oxygen enriched air supply pipe (18) for taking out oxygen enriched air from the secondary side of the oxygen enrichment membrane (16). At the same time, since the tip of the oxygen-enriched air supply pipe (18) is opened into the indoor chamber (2), the air can be separated into oxygen-enriched air and nitrogen-enriched air, and water vapor can be removed. It is possible to continuously extract clean oxygen-enriched air that is free from dust and bacteria from the secondary side of the oxygen-enriching membrane (16), which has the property of allowing dust and bacteria to pass through, but not allowing dust and bacteria to pass through. This oxygen-enriched air can be supplied to the indoor chamber (2) via the oxygen-enriched air supply pipe (18), thereby improving the oxygen concentration in the room.

In addition, since the humidity of oxygen-enriched air increases as it is separated from nitrogen-enriched air, it can contribute to the humidification effect of humidifying indoor air in winter without installing a humidifier.
Since there is no dust or germs mixed into the oxygen-enriched air, clean air can be supplied indoors.

In addition, oxygen-enriched air can be obtained continuously by using the vacuum pump (22) to constantly set the pressure on the secondary side of the oxygen-enriched membrane (16) to be lower than the pressure on the primary side to create a pressure difference. Unlike conventional oxygen enrichment machines using zeolite, there is no need for a valve device to reverse the pressure difference between the primary and secondary pressures of the zeolite, and the overall structure is simplified.

Further, by opening the tip of the oxygen-enriched air supply pipe (18) toward the front of the user-side heat exchanger (4) in the direction of indoor air circulation, the oxygen-enriched air is transferred to the user-side heat exchanger (4). When the oxygen-enriched air is exchanged with the chamber (4) and then blown into the room, the oxygen-enriched air is pumped into the chamber (6) by the vacuum pump (22).
Even if the air is heated to about 0.6C, the oxygen-enriched air is cooled by the user-side heat exchanger (4) during cooling operation, so supplying the cooled oxygen-enriched air indoors can reduce the indoor temperature. It is convenient because it does not raise the temperature.

[Brief explanation of drawings]

Fig. 1 is a schematic explanatory diagram showing an embodiment of the oxygen enrichment air conditioner according to the present invention, Fig. 2 is a perspective view of a vacuum separation membrane module, and Fig. 3 is a rod-shaped nozzle and a heat exchanger on the user side. 4 is a control flow diagram, FIG. 5 is a schematic explanatory diagram showing another embodiment, and FIG. 6 is a schematic explanatory diagram of the outdoor unit in the embodiment shown in FIG. FIG. 7 is a perspective view of a pressurized separation membrane module, and FIGS. 8 and 9 are explanatory views showing conventional examples. (2)・・・・・・・・・・・・・・・Indoor chamber (3)・・・・・・・・・・・・・・・・・・Outdoor chamber (4)・・・・・・・・・・・・・・・Use side heat exchanger (6)・・・・・・・・・・・・・・・Heat source side heat exchanger ( 16)・・・・・・・・・・・・・・・
Oxygen enrichment membrane (17)・・・・・・・・・・・・Separation membrane module (18)・・・・・・・・・・・・・・・
・Oxygen-enriched air supply pipe (19)・・・・・・・・・・・・
...Oxygen enrichment machine Diagram 1: Corner 1 - [Mackerel 1 mo. C1--C/8: l! lltlt4 seiki 1# cod tube l9゛tt
Transformation Machine 22: *Fake 12 Shea 2q: MiI Repulsion and Destruction Figure 2 Figure 3 It 27 Figure 5

Claims (1)

[Claims] 1) An air conditioner comprising an indoor chamber (2) that accommodates a user-side heat exchanger (4) and an outdoor chamber (3) that accommodates a heat source-side heat exchanger (6). In the outdoor chamber (3),
A separation membrane module (17) having an oxygen-enriched membrane (16) that separates the atmosphere into oxygen-enriched air and nitrogen-enriched air, and the primary and secondary pressures of the oxygen-enriched membrane (16). pressure means for creating a pressure difference between the oxygen enriched membrane (1
An oxygen enricher (19) having an oxygen enriched air supply pipe (18) for taking out oxygen enriched air from the secondary side of the oxygen enriched air supply pipe (18) is installed. An oxygen-enriching equipment air conditioner characterized in that a tip portion is opened into the indoor chamber (2). 2) Claim 1, wherein the distal end of the oxygen-enriched air supply pipe (18) is opened toward the front in the indoor air circulation direction with respect to the user-side heat exchanger (4) housed in the indoor chamber (2). Oxygen enrichment equipment air conditioner as described.