JPH08128681A - Air conditioner with humidifying function - Google Patents

Abstract

PURPOSE: To suppress the frosting of an outdoor heat exchanger even when the outdoor air is low temperature by providing a humidifying unit for adsorbing the moisture in the air in the outdoor unit of an air conditioner, and so providing an air exhaust outlet as to move the air after adsorbing to the vicinity of an air suction side at the windward side of a heat exchanger. CONSTITUTION: When an indoor blower 5 is rotated, the indoor air sucked from an indoor suction louver 2 is passed through a heat exchanger 4 to be warmed, and exhausted into a room. When an outdoor blower 15 in an outdoor unit 11 is rotated, heat is derived from the outdoor air sucked from an outdoor suction louver 12, and the air is exhausted from an outdoor exhaust louver 12 to the outdoor. The outdoor air sucked from an outdoor suction port 17 is introduced into a humidifying unit 16, the moisture is adsorbed by a moisture absorbing material to become dry air, which is exhausted from a treated air exhaust outlet 18 via a treated exhaust air passage 51. The dry air fed out of the outlet 18 is exhausted to the vicinity of the suction side of the windward side of an outdoor heat exchanger 14, and brought into contact with the exchanger 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air with a humidifying function in which a moisture absorbing material such as silica gel is used to adsorb the moisture in the outdoor air and to heat and desorb it in the indoor air to add humidification without supplying water. It is about a harmony machine.

[0002]

2. Description of the Related Art There is a conventional air conditioner having a humidifying function of adsorbing moisture in the air with a hygroscopic material, which has a structure as disclosed in JP-A-5-168841. The configuration will be described with reference to FIG.

As shown in FIG. 13, a hygroscopic material 105, a heating heater 106 for regeneration, a blower 107, and an outdoor air intake 108.
Also, the outdoor discharge port 109 is provided inside the outdoor unit 101 of the air conditioner, and the indoor intake port 113 and the outdoor discharge port 114 are exposed to the inside of the indoor unit 110 by pipes. The hygroscopic material is stationary, and the intake switching damper 126 and the discharge switching damper 127 switch the air passages for humidification. The indoor intake air and the indoor discharge air are respectively connected to the pipe 12
8 through a coaxial air passage, an intake air passage 115a and a discharge air passage 115b.

With the above structure, the humidifying operation is performed as follows during the heating operation in winter. First, the switching damper 126
And 127 are switched to the outdoor side, the outdoor air enters through the outdoor intake port 108, and the moisture is adsorbed by the hygroscopic material 105,
An air passage is formed that becomes dry air and is opened to the outside from the outdoor discharge port 109.

Next, the switching dampers 126 and 127 are switched to the indoor side, the indoor air enters from the indoor intake port 113, passes through the electrically heated heater 106, becomes hot air, and heats the hygroscopic material 105, An air passage is formed in which the moisture that has been desorbed from the hygroscopic material 105 is discharged into the room from the indoor discharge port 114. By repeating this, the room is humidified. In addition, 102 is an outdoor unit heat exchanger, 103 is an outdoor unit ventilation fan, 111 is an indoor heat exchanger, and 112 is an indoor ventilation fan.

[0006]

Generally, during the heating operation of the heat pump type air conditioner, the refrigerant is in the evaporation process in the heat exchanger of the outdoor unit, and the amount of heat corresponding to the latent heat of evaporation is taken from the ambient air, and It heats itself and evaporates.
The amount of heat is taken in from the sensible heat and latent heat of the air passing through the outdoor unit heat exchanger. In particular, as the outdoor air passing through the heat exchanger contains more water, more heat of condensation can be taken in, so that the heating of the refrigerant increases and the heating capacity increases.

However, when the outside air temperature drops to near 0 ° C., the heat-deprived passing air falls below the dew point temperature and frost forms on the heat exchanger. Once frost forms on the heat exchanger, the amount of passing air decreases, so cooling of the passing air is further promoted and frost formation expands. Of course, if the passing air volume decreases, the heating capacity also decreases. In that case, the frost formation is detected by the heat exchanger surface temperature sensor or the like, and the control microcomputer of the air conditioner suppresses or interrupts the heating operation to enter the defrosting operation, resulting in a decrease in the indoor heating capacity. Moreover, the frost formation phenomenon is more likely to occur as the air passing through the heat exchanger has a lower temperature and contains more water.

However, in the conventional air conditioner with a humidifying function, the dry air generated in the humidifying process is discharged to the outside without being utilized at all, and the problem of the above-mentioned frost formation is still present. In view of such a point, the present invention utilizes a dry outdoor air after adsorbing moisture with a hygroscopic material as the passing air of a heat exchanger of an outdoor unit to suppress a frosting phenomenon. It is intended to provide.

[0009]

In order to achieve the above object, an air conditioner with a humidifying function of the present invention relates to a humidifying unit for adsorbing moisture of outdoor air with a hygroscopic material. It is provided with a treated air discharge port that is provided inside and that guides dry air that has passed through the hygroscopic material to the air suction side on the windward side of the outdoor unit heat exchanger. In the invention according to claim 2, the humidifying unit for adsorbing the moisture of the outdoor air with the moisture absorbent is provided outside the outdoor unit, that is, inside the indoor unit, and the dry air outside after passing through the moisture absorbent is used as the outdoor unit. It has a treated air outlet for guiding it to the air intake side on the windward side of the heat exchanger.

In the invention according to claim 3, a humidifying unit for adsorbing the moisture of the outdoor air with the hygroscopic material is provided outside the outdoor unit, that is, in the middle of the piping path, and the outdoor dry air after passing through the hygroscopic material. Is provided with a treated air outlet for guiding the air to the air intake side of the outdoor unit heat exchanger. Further, the invention according to claim 4 is provided with a treated air discharge port for guiding the outdoor dry air after passing through the hygroscopic material to the air intake side on the windward side of the outdoor unit heat exchanger, particularly near the lower part. There is.

Further, according to the invention of claim 5, the discharge of the outdoor dry air after passing through the hygroscopic material is carried out on the air intake side on the windward side of the outdoor unit heat exchanger and near the lower part of the heat exchanger. It is provided with a treated air discharge switching means for switching to a path other than the suction path of the exchanger, an outside air temperature sensor and a humidity sensor. In addition, the invention according to claim 6 is provided with a heat transfer portion for transferring the heat of the compressor of the outdoor unit and the vicinity thereof to the desorption / regeneration air passage of the humidification unit.

[0012]

The present invention is configured as described above, and the invention according to claim 1 is a humidifying unit provided inside an outdoor unit, wherein dry air after moisture of outdoor air is adsorbed by a hygroscopic material is discharged from a treated air outlet. Since the dry air can be discharged to the air intake side on the windward side of the outdoor unit heat exchanger and the dry air can be applied to the heat exchanger, the frost phenomenon can be suppressed at low temperatures. According to a second aspect of the present invention, in a humidifying unit provided inside the outdoor unit, the dry air after the moisture of the outdoor air is absorbed by the hygroscopic material is ventilated to the air intake side on the windward side of the outdoor unit heat exchanger. Since the dry air can be applied to the heat exchanger from the treated air discharge port by being guided by a ventilation means such as the above, the frost phenomenon can be suppressed at a low temperature.

According to a third aspect of the present invention, in a humidifying unit provided in the middle of the piping path, the dry air after the moisture of the outdoor air is absorbed by the hygroscopic material is sucked into the outdoor unit heat exchanger on the windward side. The frost formation phenomenon can be suppressed at low temperature because the dry air can be applied to the heat exchanger from the treated air outlet by guiding it to the side by ventilation means such as a ventilation pipe. Further, the invention according to claim 4 is that the dry air outside the humidifying unit provided inside the outdoor unit, in the middle of the piping path, or inside the outdoor unit after passing through the hygroscopic material is discharged to the outside by a ventilation means such as a ventilation pipe. The air is guided to the windward side of the machine heat exchanger, especially near the lower side, and discharged from the treated air outlet.
By the way, dry air is lighter than air containing water, and the evaporation action of the refrigerant in the heat exchanger, that is, the cooling action to the outdoor passage air, is lower in the lower part which is the refrigerant inlet to the heat exchanger during the heating operation. Stronger than the top. Therefore, when the heat exchanger is guided to the vicinity of the lower portion on the suction side, the frost formation phenomenon can be suppressed more effectively.

Further, in the invention with a humidifying function according to a fifth aspect of the invention, the dry air outside the humidifying unit provided inside the outdoor unit or in the middle of the piping path or inside the outdoor unit after passing through the hygroscopic material is passed through a ventilation pipe or the like. It is led to the treated air discharge switching means by the ventilation means. When the outside air temperature sensor and the humidity sensor detect the outside air temperature and humidity, and when it is determined that the surface air of the heat exchanger is below the dew point temperature in light of the heating operation cycle state at that time, the treated air discharge switching means guides. The dried air is discharged to the air intake side on the windward side of the outdoor unit heat exchanger, especially near the lower part.

On the contrary, when it is judged that the temperature does not become lower than the dew point temperature, the treated air discharge switching means discharges the introduced dry air to a place other than the air suction path of the outdoor unit heat exchanger or directly to the outside of the outdoor unit. By the way, dry air is lighter than air containing water, and the evaporating action of the refrigerant in the heat exchanger, that is, the cooling action for the outdoor passage air, is lower in the lower part which is the refrigerant inlet to the heat exchanger during the heating operation. Stronger than the top.
Therefore, when the heat exchanger is guided to the vicinity of the lower portion on the suction side, the frosting phenomenon can be suppressed more effectively.

Further, in the invention according to claim 6, the heat of the compressor of the outdoor unit and the heat in the vicinity thereof is transferred to the desorption / regeneration air passage at the transfer portion, so that the desorption / regeneration air is provided in front of the regeneration heating heater. Can be preheated. In order to desorb and regenerate water from the hygroscopic material, hot air of 100 ° C. to 140 ° C. is usually applied. The higher the air temperature, the higher the desorption / regeneration speed and the larger the desorption / regeneration amount. Therefore, if preheating is performed, a large amount of water can be quickly desorbed and regenerated with a heating heater for regeneration with less electric power.

[0017]

Embodiments of the air conditioner with a humidifying function of the present invention will be described below with reference to FIGS. FIG. 1 is a main part configuration diagram showing a first embodiment (according to claim 1) of an air conditioner with a humidifying function of the present invention. In FIG. 1, reference numeral 1 is an indoor unit of an air conditioner in which an indoor unit heat exchanger 4, an indoor blower 5 and the like are arranged. Reference numeral 11 is an outdoor unit of the air conditioner, and the outdoor unit heat exchanger 14 and the outdoor blower 1 are provided inside.
5, a humidifying unit 16 and the like are provided.

Next, specific examples of the structure of the humidifying unit 16 are shown in FIGS. In the case of FIG. 2, the humidifying unit 16 accommodates components such as a blower fan A22, a heating heater 23 for regeneration, and a moisture absorbent 24 formed in a honeycomb shape or a corrugated shape.

First, the process of adsorbing moisture from the outdoor air to the hygroscopic material 24 will be described. With the intake switching valve 20 switched to the processing air passage 50 side and the exhaust switching valve 26 switched to the processing exhaust air passage 51 side, when the blower fan A22 rotates, outdoor air passes from the outdoor intake port 17 to the intake passage 21. It reaches the hygroscopic material 24. At that time, the regeneration heater 23 is not energized. The outdoor air in which moisture has been adsorbed by the hygroscopic material 24 to become dry air while passing through the hygroscopic material 24 is discharged from the treated air discharge port 18 through the treated discharge air passage 51.

After the moisture absorbing material 24 has sufficiently adsorbed the moisture after a lapse of a certain period of time, the intake switching valve 20 moves the exhaust switching valve 26 to the side of the desorption regeneration air passage 9 and the exhaust switching valve 26 regenerates the exhaust air passage 10.
When the blower fan A22 rotates in the state of being switched to the side, indoor air reaches the regeneration heater 23 from the indoor intake port 6 through the intake passage 21. The room air heated to about 100 to 140 ° C. by the energizing heating heater for regeneration 23 desorbs the moisture adsorbed on the hygroscopic material 24 while passing through the hygroscopic material 24, becomes humid air, and is regenerated and discharged. It is discharged from the regeneration air discharge port 7 through the air passage 10.

Then, after the moisture adsorbed on the hygroscopic material 24 has been desorbed after a certain period of time, the process returns to the above-mentioned adsorption process, and the cycle of adsorption and desorption regeneration is repeated. In this way, the moisture of the outdoor air is added to the indoor air and discharged into the room for humidification.

In the case of FIG. 3, the humidifying unit 16 is covered with a cylindrical moisture absorbing material 24 by a rotor frame 33, and a center shaft 37 of its core is rotatably held from both sides by bearings 38. A driving motor 30 is rotationally driven at a rotational speed of about 10 to 15 rph via a timing belt 34 and a pulley 29.

The rotor frame 33 is pressed against the partition plate 35 with the air seal material A36, and the desorption / regeneration air passage 9 is pressed with the air seal material B28 against the partition plate 35 and the windward cross section of the hygroscopic material to regenerate the exhaust air passage 10. Is the air seal material C
Since the pressure is applied to the leeward side cross section of the hygroscopic material at 27, the outside air on the processing side does not mix with the indoor air on the regeneration side inside the humidifying unit 16.

When the processing side fan 32 rotates, outdoor air enters from the outdoor intake port 17 through the processing air passage 50,
While passing through the hygroscopic material, the moisture is adsorbed by the hygroscopic material and dried, and then passes through the process discharge air passage 51 and the process air discharge port 18
Emitted from. The portion of the hygroscopic material that has adsorbed moisture is rotationally driven by the drive motor 30 and comes to the passage of the desorption / regeneration air in the range surrounded by the air seal material 28.

Then, by the rotation of the regeneration side fan 31, it is taken in from the indoor intake port 6 through the desorption regeneration air passage 9 and 100 to 14 while passing through the regeneration heater 23.
The room air heated to about 0 ° C. desorbs and regenerates the moisture adsorbed on the hygroscopic material. The indoor air from which moisture has been removed becomes moist air and passes through the regeneration discharge air passage 10 and the regeneration air discharge port 7
Is discharged indoors. Then, the portion of the hygroscopic material from which water has been desorbed is continuously driven to rotate, and moisture is desorbed from the outdoor air, and this adsorption and desorption cycle is repeated to continuously humidify the indoor air.

In FIG. 1, a humidifying unit is provided inside the outdoor unit 11, and a desorption / regeneration air passage for conveying the indoor air through a pipe 8 connecting the indoor unit 1 and the outdoor unit 11. 9 and the regeneration exhaust air passage 10 communicate with each other.
Of course, a copper pipe (not shown) for carrying a refrigerant and an electric wiring (not shown) usually pass through the pipe 8.

Next, the operation of FIG. 1 will be described by taking the heating operation as an example. First, when the indoor blower 5 rotates, the indoor air sucked from the indoor suction louver 2 is warmed while passing through the indoor heat exchanger 4, and becomes warm air and is discharged from the indoor blower louver 3 to the room. Outdoor blower 1 in the outdoor unit 11
When 5 rotates, the outdoor air sucked from the outdoor suction louver 12 is deprived of heat while passing through the outdoor unit heat exchanger 14, and is discharged to the outside from the outdoor exhaust louver 13.

Since the humidifying unit 16 operates as described above, the outdoor air sucked from the outdoor intake port 17 enters the humidifying unit 16 through the processing air passage 50, and the moisture is adsorbed by the hygroscopic material to form dry air. Then, it is discharged from the processing air discharge port 18 through the processing discharge air passage 51. At the same time, the indoor air sucked from the indoor intake port 6 enters the humidification unit 16 in the outdoor unit through the desorption / regeneration air passage 9, and is heated by the regeneration heater 23 to desorb moisture from the hygroscopic material and become moist air. And is discharged from the regeneration air discharge port 7 through the regeneration discharge air passage 10.

Then, the moist air is mixed with the air of the indoor blower 5 and is discharged into the room from the indoor blow louver 3. In this way, the room is humidified. The dry air discharged from the treated air outlet is discharged near the windward suction side of the outdoor unit heat exchanger 14 and hits the heat exchanger.

Next, during the heating operation, the outdoor unit heat exchanger 14
The refrigerant is in the evaporation process, and takes sensible heat and latent heat from the passing air. However, when the outside air temperature decreases to near 0 ° C., the passing air from which heat has been taken falls below the dew point temperature, and the moisture in the passing air frosts on the outdoor unit heat exchanger 14.

Once frost forms on the heat exchanger, the amount of passing air decreases, so that the cooling of the passing air is further promoted and the frost forms gradually. Since the passing air volume decreases, the heating capacity also decreases. However, by applying the dry air from the humidifying unit to the suction side of the outdoor unit heat exchanger, the frosting phenomenon can be suppressed.

For example, when the outside air temperature is 2 ° C. and the wet bulb temperature is 1 ° C., the absolute humidity is 3.5 g / kg and the dew point temperature is about −0.5 ° C. However, the dry air at the outlet of the humidification unit has an absolute humidity of about 0.3 g / kg and a dew point temperature of about -2.
Dry air at 0 ° C. In the case of a 2.5 kW class air conditioner, the amount of air passing through the outdoor heat exchanger is usually about 20 m ³ /
If the amount of treated air in the humidifying unit 16 is 2 m ³ / min, the moisture content of the air passing through the outdoor unit heat exchanger can be reduced by about 10%, resulting in about 10% improvement in frost formation.

FIG. 4 is a main part configuration diagram showing a second embodiment (according to claim 2) of an air conditioner with a humidifying function of the present invention. In FIG. 4, a humidifying unit 16 is provided inside the indoor unit 1, a weather cover 52 is provided outside the wall 19 through the piping pipe 8, and outdoor air is introduced from a downward outside air intake port 53. It is taken in from the outdoor intake port 17 of the processing air passage 50. Then, the processing exhaust air passage 51, the coolant carrying copper pipe, and the electric wiring pass through the piping pipe 8 connected to the outdoor unit 11.

Therefore, the dry air discharged from the humidifying unit 16 inside the indoor unit is discharged from the treated air outlet 18 inside the outdoor unit to the vicinity of the air intake side on the windward side of the outdoor unit heat exchanger 14. That is, the operation is similar to that of FIG. 1 described above, and the same effect can be obtained.

In particular, in this case, since the humidifying unit is located on the indoor unit side, the moist air in the desorption / regeneration air passage 9 can be discharged into the room without being cooled by the outside air. Therefore, in the embodiment shown in FIG. Insulation for desorption regeneration air passages, which may be necessary to prevent condensation, is not needed in this case. Further, since the processing air passage 50 terminates at the weather cover 52, the pipe 8 can be made thinner than in the case of FIG.

FIG. 5 is a main part configuration diagram showing a third embodiment (according to claim 3) of an air conditioner with a humidifying function of the present invention. In FIG. 5, the humidifying unit 16 is arranged inside the weather cover 52 in the middle of the piping path connecting the indoor unit 1 and the outdoor unit 11, that is, where the piping pipe 8 is outside the wall 19. The outdoor air is taken in from the outdoor air intake port 53 through the outdoor air intake port 17 of the processing air passage 50. Then, as in the case of FIG. 4, the processing exhaust air passage 51, the coolant carrying copper pipe, and the electrical wiring pass through the piping pipe 8 connected to the outdoor unit 11.

Therefore, the dry air discharged from the humidifying unit 16 inside the indoor unit is discharged from the treated air outlet 18 inside the outdoor unit to the vicinity of the air intake side of the outdoor unit heat exchanger 14. That is, the operation is similar to that of FIG. 1 described above, and the same effect can be obtained.

In particular, the advantage of this case is that since the humidifying unit is located outside the indoor unit, the moist air in the desorption / regeneration air passage 9 can be discharged into the room without being cooled by the outside air. The desorption regeneration air passage insulation, which would be required in the example to prevent condensation, is not needed in this case. Further, since the processing air passage 50 terminates at the weather cover 52, the pipe 8 can be made thinner than in the case of FIG.

FIG. 6 is a main part configuration diagram showing a fourth embodiment (according to claim 4) of an air conditioner with a humidifying function of the present invention. In FIG. 6, the humidifying unit 16 is inside the outdoor unit 11 as in the embodiment of FIG. 1, and the difference is that the dry air from the humidifying unit sucks in the air above the outdoor unit heat exchanger 14 from the treated air outlet 18. It is to be discharged to the side, especially near the lower part. That is, the operation is the same as that shown in FIG.

By the way, dry air is lighter than air containing water, and the function of evaporating the refrigerant in the heat exchanger, that is, the function of removing heat from the passing air, has the effect that the refrigerant enters the heat exchanger during the heating operation. The lower part is stronger than the upper part.
Therefore, when the dry air is applied to the vicinity of the lower part of the heat exchanger 14 on the suction side, the frosting effect can be obtained more effectively than in the case of FIG.

FIG. 7 is a main part configuration diagram showing a fifth embodiment (according to claim 4) of an air conditioner with a humidifying function of the present invention. In FIG. 7, the humidifying unit 16 is inside the indoor unit 1 as in the embodiment of FIG. 4, and the difference is that the dry air from the humidifying unit flows from the treated air outlet 18 to the outdoor unit heat exchanger 1
4 is discharged to the windward side of the air, especially near the lower part.

That is, the operation is the same as that shown in FIG.
Similar to the case of FIG. 6, the effect of suppressing frost formation can be effectively obtained. Further, since the processing air passage 50 ends at the weather cover 52, the piping pipe 8 can be made thinner than in the case of FIG.

FIG. 8 is a main part configuration diagram showing a sixth embodiment (according to claim 4) of the air conditioner with a humidifying function of the present invention. In FIG. 8, the humidifying unit 16 is in the middle of the piping path, that is, inside the weather cover 52 as in the embodiment of FIG. 5, and the difference is that the dry air from the humidifying unit is discharged from the treated air outlet 18 to the outdoor unit heat exchanger 14. That is, the air is discharged to the air intake side on the windward, especially near the lower part.

That is, the operation is the same as that shown in FIG.
Similar to the case of FIG. 6, the effect of suppressing frost formation can be effectively obtained. Further, since the processing air passage 50 ends at the weather cover 52, the piping pipe 8 can be made thinner than in the case of FIG.

FIG. 9 is a configuration diagram of essential parts showing a seventh embodiment (according to claim 5) of an air conditioner with a humidifying function of the present invention. 9, the humidifying unit 16 is inside the outdoor unit 11 as in the embodiment of FIG. The difference is that the dry air from the humidifying unit has a passage switching valve 54 at the end of the process discharge air passage 51, and the outside air temperature sensor 59 and the humidity sensor 6 are provided.
A control microcomputer (not shown) calculates the dew point temperature of the air from the outside air temperature and the humidity detected at 0, and the surface air temperature of the outdoor unit heat exchanger 14 is calculated based on the heating operation cycle state at that time. If it is determined that the temperature will be below the dew point temperature,
By switching the passage switching valve, the dry air is discharged to the windward side of the outdoor unit heat exchanger 14, particularly near the lower part, to suppress the reduction of frost formation.

If it is determined that the temperature does not fall below the dew-point temperature, the passage switching valve is switched to the opposite direction, and the air is discharged to a position other than the air intake path of the outdoor unit heat exchanger, in the vicinity of the outdoor exhaust louver 13 in the figure. Is to be done. If the temperature does not fall below the dew point temperature, there is no fear of frost formation. In that case, if air containing water is passed through the outdoor unit heat exchanger 14, heat can be efficiently obtained by the latent heat, so that heating efficiency is good.

Therefore, in the case of the present embodiment, the supply of dry air can be switched while determining the possibility of frost formation from the dew point temperature using the outside air temperature sensor and the humidity sensor, and the effect of suppressing the frost formation phenomenon and the heating efficiency can be obtained. It also has the effect of maintaining a high level.

FIG. 10 is a main part configuration diagram showing an eighth embodiment (according to claim 5) of an air conditioner with a humidifying function of the present invention. 10, the humidifying unit 16 is inside the indoor unit 1 as in the embodiment of FIG. The difference is that the dry air from the humidifying unit has a passage switching valve 54 at the end of the process discharge air passage 51, and a control microcomputer (not shown) is used based on the outside air temperature and humidity detected by the outside air temperature sensor 59 and the humidity sensor 60. Calculates the dew point temperature of the air, and when it determines that the surface air temperature of the outdoor unit heat exchanger 14 is below the dew point temperature in light of the heating operation cycle state at that time, it switches the passage switching valve to change the outdoor temperature. Machine heat exchanger 14
The dry air is discharged to the vicinity of the lower part of the air intake side of the wind, and the reduction of frost formation is suppressed.

When it is determined that the temperature does not fall below the dew point temperature, the passage switching valve is switched to the opposite direction, and the air is discharged to a position other than the air intake path of the outdoor unit heat exchanger, in the vicinity of the outdoor exhaust louver 13 in the figure. Is to be done. Figure 9
The same effect can be obtained. Further, since the processing air passage 50 ends at the weather cover 52, the pipe 8 can be made thinner than in the case of FIG.

FIG. 11 is a configuration diagram of essential parts showing a ninth embodiment (according to claim 5) of an air conditioner with a humidifying function of the present invention. In FIG. 11, the humidifying unit 16 is in the middle of the piping path, that is, inside the weather cover 52, as in the embodiment of FIG. The difference is that the dry air from the humidifying unit has a passage switching valve 54 at the end of the process discharge air passage 51.
From the outside air temperature and humidity detected by the outside air temperature sensor 59 and the humidity sensor 60, a control microcomputer (not shown) calculates the dew point temperature of the air, and in light of the heating operation cycle state at that time, the outdoor unit heat exchanger. When it is determined that the surface air temperature of 14 becomes lower than the dew point temperature, the passage switching valve is switched to discharge the dry air to the windward side of the outdoor unit heat exchanger 14, especially near the lower part thereof to form frost. Suppress the decrease.

When it is determined that the temperature does not fall below the dew point temperature, the passage switching valve is switched to the opposite direction, and the air is discharged to a position other than the air intake path of the outdoor unit heat exchanger, in the vicinity of the outdoor exhaust louver 13 in the figure. Is to be done. Figure 9
The same effect can be obtained. Further, since the processing air passage 50 ends at the weather cover 52, the piping pipe 8 can be made thinner than in the case of FIG.

FIG. 12 is a configuration diagram of essential parts showing a tenth embodiment (according to claim 6) of an air conditioner with a humidifying function of the present invention. As in FIG. 9, the humidifying unit is inside the outdoor unit 11, and the dew point temperature is also detected by the outside air temperature sensor 59 and the humidity sensor 60. The difference is that the heat of the compressor 61 and its vicinity is surrounded by a case 62, and a heat transfer means 64 such as a metal fin for receiving the internal heat is added to that part through the desorption / regeneration air passage 9. , Preheat the desorption / regeneration air.

By doing so, for example, if the air of 20 ° C. conveyed from the room is preheated to 30 ° C., 1
The heating energy in the regeneration heater 23 is saved by 0 deg. Therefore, in the case of this embodiment, in addition to the same effect as the embodiment of FIG.

[0054]

Since the air conditioner with a humidifying function of the present invention is configured as described above, in the invention of claim 1, when the outdoor air is at a low temperature, the frost phenomenon of the outdoor unit heat exchanger is prevented. Can be suppressed. In addition, in addition to the effect of the invention of claim 1, in the inventions of claims 2 and 3, in addition to the effect of the invention of claim 1, a heat insulating material for the piping route is unnecessary and the piping pipe is thin. Complete.

Further, in the invention of claim 4, it is better than that of the invention of claim 1 or 2, and the frost phenomenon can be suppressed when the outdoor air is at a low temperature.
Further, in the invention according to claim 5, the possibility of frost formation is judged from the conditions of the temperature and humidity of the outdoor air and the state of the cycle operation at that time, and both effects of suppressing frost formation and maintaining heating efficiency are provided. There is. Moreover, in the invention according to claim 6, there is an effect that the power consumption of the heater for regeneration heating can be suppressed.

[Brief description of drawings]

FIG. 1 is a main part configuration diagram showing a first embodiment of an air conditioner with a humidifying function of the present invention.

FIG. 2 is a main part configuration diagram showing an embodiment of the humidifying unit of FIG.

FIG. 3 is a main part configuration diagram showing another embodiment of the humidifying unit in FIG.

FIG. 4 is a main part configuration diagram showing a second embodiment of an air conditioner with a humidifying function of the present invention.

FIG. 5 is a main part configuration diagram showing a third embodiment of an air conditioner with a humidifying function of the present invention.

FIG. 6 is a main part configuration diagram showing a fourth embodiment of an air conditioner with a humidifying function of the present invention.

FIG. 7 is a main part configuration diagram showing a fifth embodiment of an air conditioner with a humidifying function of the present invention.

FIG. 8 is a main part configuration diagram showing a sixth embodiment of an air conditioner with a humidifying function of the present invention.

FIG. 9 is a main part configuration diagram showing a seventh embodiment of an air conditioner with a humidifying function of the present invention.

FIG. 10 is a main part configuration diagram showing an eighth embodiment of an air conditioner with a humidifying function of the present invention.

FIG. 11 is a main part configuration diagram showing a ninth embodiment of an air conditioner with a humidifying function of the present invention.

FIG. 12 is a main part configuration diagram showing a tenth embodiment of the air conditioner with a humidifying function of the present invention.

FIG. 13 is a main part configuration diagram of a conventional air conditioner with a humidifying function.

[Explanation of symbols]

 1 Indoor unit 5 Indoor blower 6 Indoor intake port 7 Regenerated air exhaust port 8 Piping pipe 9 Desorption / regeneration air passage 10 Regeneration exhaust air passage 11 Outdoor unit 14 Outdoor unit heat exchanger 15 Outdoor blower 16 Humidification unit 17 Outdoor intake port 18 Treatment Air exhaust port 20 Intake switching valve 21 Intake passage 22 Blower fan A 23 Regenerative heating heater 24 Hygroscopic material 25 Exhaust passage 26 Intake switching valve 30 Drive motor 31 Reproducing side fan 32 Processing side fan 35 Partition plate 50 Processing air passage 51 Processing Exhaust air passage 52 Weather cover

Claims (6)

[Claims] 1. A humidifying unit for adsorbing moisture in the air with a hygroscopic material is provided inside an outdoor unit of an air conditioner, and the outlet dry air after the adsorption treatment is near the air intake side on the windward side of the heat exchanger. An air conditioner with a humidifying function, characterized in that a treated air outlet is provided so that 2. A humidifying unit for adsorbing moisture in the air with a hygroscopic material is provided inside an indoor unit of an air conditioner, and the outlet dry air after the adsorption treatment is the air intake on the windward side of the outdoor unit heat exchanger. An air conditioner with a humidifying function, characterized in that a treated air discharge port is provided so as to come close to the side. 3. A humidifying unit for adsorbing moisture in the air with a hygroscopic material is provided in the middle of the piping path of the air conditioner, and the outlet dry air after the adsorption treatment is the air intake on the windward side of the outdoor unit heat exchanger. An air conditioner with a humidifying function, characterized in that a treated air discharge port is provided so as to come close to the side. 4. A humidifying unit for adsorbing moisture in the air with a hygroscopic material is provided inside the outdoor unit of the air conditioner or in the middle of the piping path or inside the outdoor unit, and the dry air at the outlet of the humidifying unit is the heat exchanger of the outdoor unit. An air conditioner with a humidifying function, characterized in that a treated air outlet is provided on the air intake side on the windward side of and in the vicinity of the lower part of the heat exchanger. 5. A humidifying unit for adsorbing moisture in the air with a hygroscopic material is provided inside the outdoor unit of the air conditioner, in the middle of the piping path or inside the outdoor unit, and the outlet dry air of the humidifying unit is discharged to remove heat from the outdoor unit. Providing a treated air discharge switching means that switches between the air intake side on the windward side of the exchanger and near the lower part of the heat exchanger, and a path other than the suction path of the heat exchanger, to determine the temperature and humidity conditions of the outside air and the cycle operating state at that time. An air conditioner with a humidifying function, characterized in that the treated air discharge switching means is switched accordingly. 6. A humidifying unit for adsorbing moisture in the air with a hygroscopic material is provided inside the outdoor unit of the air conditioner, and the heat of the compressor of the outdoor unit and its vicinity is transmitted to the passage of the desorption regeneration air. An air conditioner with a humidifying function, which is provided with a heat transfer portion for performing the operation.