JP2788325B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention divides a condenser constituting a refrigeration cycle into an air-cooled heat exchanger and a water-cooled heat exchanger, and provides an air conditioner. The present invention relates to a portable air conditioner in which all devices constituting a refrigeration cycle are housed, and the air conditioner body can be arranged at an arbitrary position in a heat exchange room with the air conditioner body. The present invention relates to an improvement of a notification structure for a water level of a sprinkler that sprinkles water.

(Prior art) For example, despite the relatively large area of the heat exchange chamber,
In some cases, the area of the minimum required heat exchange site may be small. Alternatively, the position of the required heat exchange site may fluctuate appropriately.

The air conditioner used under these conditions is a portable air conditioner that accommodates all the components that make up the refrigeration cycle in the air conditioner body and can be arranged at any position along with the air conditioner body. It is more convenient to use a machine.

An example of this type of portable air conditioner is disclosed, for example, in Japanese Utility Model Publication No. 52-17969. The outline will be described with reference to FIGS. 17 (A) and (B).

The inside of the portable air conditioner main body 1 is divided into a cooling room 3 and a machine room 4 by a partition 2, and the cooling room 3 is provided with an evaporator 5, a cool air blowing fan 6, etc., and indoor air suction on the front side. A grill 7 and a cool air blowing grill 8 are provided. Machine room 4 above
Has a compressor 9, an air-cooled heat exchanger that is a heating condenser
10, a water spray device 11, a water-cooled heat exchanger 12, which is an evaporative condenser, a water tank 13, a pump 14, and the like are arranged, and a heat exchange air suction grill 15 is provided on one side surface. The water-cooled heat exchanger 12, the water sprinkler 11, the air-cooled heat exchanger 10, and the like are surrounded by a wind collecting cover 16. A discharge port 17 provided in the wind collection cover 16 is connected to a casing 19 in which a blower 18 is disposed. An exhaust port 20 is provided in the casing 19, and a flexible discharge pipe 21 communicating with an outdoor (not shown) is connected thereto.

The high-temperature and high-pressure refrigerant discharged from the compressor 9 is first guided to the air-cooled heat exchanger 10, and then guided to the water-cooled heat exchanger 12, where it is condensed. At the same time, the pump 14 is driven to apply pressure to the water in the water tank 13 to spray water from the water spray device 11 to the water-cooled heat exchanger 12. The sprinkled water evaporates while depriving the water-cooled heat exchanger 12 of heat of evaporation, and is guided and heated by the air-cooled heat exchanger 10, where the temperature rises and the relative humidity falls. The blower 18 is also driven, and the heat exchange air guided into the machine room 4 from the heat exchange air suction grill 15 exchanges heat with the water-cooled heat exchanger 12 to be air-cooled. Here, the water is mixed with the water vapor sprinkled and evaporated from the water sprinkling device 11, and is converted into high-humidity air containing a large amount of water vapor and guided to the air-cooled heat exchanger 10. The air-fuel mixture, which is high-humidity air, is heated by exchanging heat with the air-cooled heat exchanger 10, and the temperature rises and the relative humidity decreases. The high-temperature, high-humidity air after the heat exchange is guided from the wind collecting cover 16 to the casing 19, and is discharged to the outside of the room via the discharge port 20 and the discharge pipe 21. Further, the air-cooled heat exchanger 10 exchanges heat with high-humidity air, and the water-cooled heat exchanger 12 exchanges heat with water and heat-exchanged air of the water sprinkler 11,
The respective refrigerants are condensed.

As described above, all the heat released as the cooling device is discharged outside through the discharge pipe 21, so that the main body 1 can be arranged at an arbitrary position in the room. The air discharged outside the room is heated by the air-cooled heat exchanger 10 and has a relatively low relative humidity, but is a high-temperature, high-humidity, thermally dense gas. Therefore, water droplets do not condense on the inner surfaces of the casing 19, the exhaust port body 20, and the discharge pipe 21 through which this passes.

(Problems to be Solved by the Invention) In such an air conditioner, the pump 14 applies pressure to the water in the water tank 13 to spray water from the water sprayer 11 to the water-cooled heat exchanger 12, whereby the water is cooled. Some evaporate and some evaporate into the air-cooled heat exchanger 10. Therefore, the amount of water in the water tank 13 gradually decreases with use. When the liquid level drops and falls below a predetermined water level, a float switch (not shown) detects the level and turns on an alarm lamp or sounds an alarm buzzer to notify the user. The user must draw out the water tank 13 from the main body 1 and supply water.

However, the float switch detects the predetermined water level and issues an alarm long before the operation is completely stopped, so that there is sufficient time before the operation is stopped. Is done.

For this reason, even if an alarm is issued, the user is often left busy because he is busy and does not start working on the water supply to the water tank 13. And forget it,
It reminds me only after the water runs out and the high pressure switch is activated and the operation stops.

Although the safety of the apparatus is ensured, once the cooling operation is stopped, the temperature of the heat exchanged chamber rises rapidly, and the comfortable feeling up to that point is completely lost. Even if water is immediately supplied to the water tank 13 and the operation is restarted, it takes time before the temperature is lowered to the original temperature.

Such an air conditioner is usually provided with a timer. The timer switch of this timer is switched between "off after a set time" and "on after a set time". For example, when the cooling operation is continued during sleep and the operation is stopped after a predetermined time, the time is set to “off after the set time” together with the setting of the time. In addition, when it is desired to start the cooling operation immediately before the return time, it is sufficient to go out in accordance with “after the set time”.

In this way, by using the above timer,
Extremely convenient and effective driving can be achieved. However, although the remaining amount of the water tank 13 is low,
When the warning indicating that the remaining amount of the battery 13 is low is not displayed, the timer may be set to a time.

At this time, if the timer is set to “off after the set time”, the operation stops before the time elapses. If the timer is set to “set after time setting”, the operation stops immediately after the actual operation starts. In any case, there is no point in setting the time by the timer, and a so-called timer effect cannot be secured.

The present invention has been made in view of the above circumstances, and a first object of the present invention is to delay the timing of displaying an alarm indicating that there is no remaining water in a sprinkler device to a minimum necessary time. It is an object of the present invention to provide an air conditioner that prompts prompt water supply work and can maintain comfortable air conditioning.

Also, a second object of the present invention is to provide an air conditioner which displays the remaining operation time up to the stoppage of operation, thereby preventing an unexpected stoppage and obtaining a reliable timer effect. To provide.

[Structure of the Invention] (Means and Actions for Solving the Problems) That is, the present invention accommodates an air-cooled heat exchanger and a water-cooled heat exchanger in which a condenser constituting a refrigeration cycle is divided in an air conditioner body. Then, the water collected in the water sprinkler is sprinkled into the water-cooled heat exchanger to exchange heat, and the water level detecting means detects the liquid level of the water collected in the water sprinkler and detects the minimum required water level. The air conditioner is characterized in that a detection signal is output when the detection is performed, and the notification unit performs an alarm display in response to the detection signal of the water level detection unit.

With this configuration, it is necessary to supply water immediately after the notification means makes an alarm display. By supplying water, driving can be continued and comfortable air conditioning can be obtained.

Further, according to the present invention, an air-cooled heat exchanger and a water-cooled heat exchanger in which a condenser constituting a refrigeration cycle is divided are housed in an air conditioner main body, and water collected in a sprinkler is subjected to the water-cooled heat exchanger. The water level is constantly detected by the water level detecting means to detect a change in the water level of the water collected in the water sprinkler, and a detection signal is output. An air conditioner characterized by continuously displaying the remaining operation time until the operation is stopped.

With this configuration, the timer can be set while observing the remaining operation time until the operation stoppage displayed by the display means, and a reliable timer effect can be obtained.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, reference numeral 30 denotes a portable air conditioner main body having a plurality of moving vehicles 31 provided on a bottom surface. The interior of the air conditioner main body 30 is vertically divided by a partition wall 32 provided at a substantially central portion in a horizontal direction. The upper room is referred to as a cooling room 33, and the lower room is referred to as a machine room. On the front side of the cooling room 33, a cool air blowing grille 36 having a louver 35 for adjusting the blowing direction of the cool air is provided. The suction grill 37 is located on the back side of the cooling room 33.
Are provided, and an evaporator 38 constituting a refrigeration cycle is disposed opposite to the evaporator 38. A drain pan 139 is disposed below the evaporator 38 to receive drain water generated by the evaporator 38.

The partition wall 32 is provided with a motor 39 having rotating shafts 39a and 39b protruding from both end surfaces thereof. The axial direction of the motor 39 is vertically oriented, and a first fan 40 is fitted on a rotating shaft 39a projecting upward. This first fan 40
Is surrounded by a casing 43 having an upper suction port 41a and a lower suction port 41b on an upper surface and a lower surface, and having an outlet 42 communicating with the cold air outlet grill 36.

A heat exchange air suction grille 44 is provided on the rear side of the machine room 34, and an air-cooled heat exchanger 45 constituting a condenser of a refrigeration cycle is disposed opposite to the heat intake air intake grille 44. This air-cooled heat exchanger 44 is a so-called wind tube type,
It is disposed obliquely below the evaporator 38 via the partition 32. The heat exchange air suction grille 44 is located on the lower side with a predetermined interval from the suction grille 37. An integrated air filter 46 faces the suction grill 37 and the heat exchange air suction grill 44, and is detachably mounted on the rear side of the main body 30. That is, the integrated air filter 46 is interposed between the suction grill 37 and the evaporator 38 and between the heat exchange air suction grill 44 and the air-cooled heat exchanger 45.

The air-cooled heat exchanger 45 is supported on a casing 47. The casing 47 has an upper suction port 48 and a lower suction port 49 through which a rotating shaft 38b protruding downward from the motor 39 penetrates. The casing 47 surrounds the second fan 50 fitted on the rotation shaft 39b. An outlet 51 provided in the casing 47 has an opening opening on the back side of the main body 30.
52 is inserted.

A flexible discharge hose (not shown) is connected to the outlet 51 of the casing 47.
The other end of the discharge hose is connected to a discharge port that penetrates the wall surface of the heat exchange chamber and communicates with the outside. Since the discharge hose has flexibility, the main body 30 can be moved to an arbitrary position, and all the heat exchange air taken into the machine room 34 is discharged outside the room.

A water-cooled heat exchanger 53 and a water sprinkler 54 that constitute a condenser of a refrigeration cycle are provided below the casing 47. The condenser is divided into an air-cooled heat exchanger 45 and a water-cooled heat exchanger 53. Water-cooled heat exchanger 53
Is a coil type in which a heat exchange pipe is wound twice, and is housed in a watering cover 55 constituting the watering device 54.
The upper end of the sprinkling cover 55 is open and connected so as to communicate with the lower suction port 49 of the casing 47. The lower end is also open, from which the water-cooled heat exchanger 53 projects downward. The lower end of the water-cooled heat exchanger 53 is a water pan
Inserted into 56 and immersed in the water contained therein. The peripheral surface of the lower end portion of the casing 47 is inserted with a certain gap from the peripheral surface of the water receiving tray 56, and is dimensioned so as to have a certain gap with the liquid level of the water stored therein. On one side of the water tray 56, a float switch 57 as a water level detecting means is provided. The float switch 57 detects the liquid level of the water receiving tray 56 and outputs a detection signal when the minimum liquid level required for watering is detected.

A sprinkler 58 is fitted to the end of the rotating shaft 39b that projects from the second fan 50 and extends into the sprinkling cover 55 from the lower suction port 49 of the casing 47. The peripheral surface of the sprinkler 58 is surrounded by the water-cooled heat exchanger 53. The upper end is closed and a cylindrical body whose lower end is open, is formed in a reverse tapered shape whose diameter gradually decreases from the upper end to the lower end, and only the lower end opening is immersed in the water in the water receiving tray 56. I have. A vane 58a is provided integrally at a substantially central portion of the outer peripheral surface, and a watering hole 58b formed of a round hole is opened in the vicinity of the blade 58a,
In addition, a watering hole 58c composed of a plurality of long holes is opened near the upper end.

The machine room 34 in the vicinity of the watering device 54 thus configured
An auxiliary suction port 59 is provided in the lower rear portion.

As shown in FIG. 3, a part of the water receiving tray 56 extends laterally through a partition plate 56a, and a water supply unit 61 for receiving water supplied from a water tank 60 is provided integrally therewith. Can be The partition plate 56a is provided with a communication pipe 62, and is used on the water sprinkler 58 side to replenish the water from the water tank 60 via the water supply unit 61 in an amount corresponding to the evaporation.

The water tank 60 is detachable from the main body 30 and is disposed at a side portion of the watering cover 55 and the casing 47. Further, the compressor 63 is arranged and fixed in a state of being juxtaposed with the water tank 60. In the drawing, reference numeral 64 denotes a flexible discharge hose connected to the outlet 51 of the casing 47.

As shown in FIG. 2, an air-cooled heat exchanger 45 communicates with the discharge side of the compressor 63 via a refrigerant pipe p, and a water-cooled heat exchanger 53 communicates with the downstream side. Then, it communicates with the suction side of the compressor 63 via the capillary tube 65 and the evaporator 38, and thus a refrigeration cycle is configured. In addition,
In the figure, reference numeral 66 denotes a high-pressure switch provided between the air-cooled heat exchanger 45 and the water-cooled heat exchanger 53, for detecting the pressure of the refrigerant in the refrigerant pipe p.

As shown in FIGS. 4 and 5, the first fan
The casing 43 surrounding the air outlet 40 is formed so that the vertical dimension A of the air outlet 42 is smaller than the dimension B between both ends of the blade of the first fan 40. The width C of the outlet 42 is determined by the first fan
It may be considerably wider than the diameter Dφ of 40 and slightly smaller than the width of the front surface of the main body 30.

As shown in FIG. 6 and FIG.
The back side of the device comprises a detachable back panel 30a, and a suction grill 37 and a heat exchange air suction grill 44 are provided at predetermined intervals. These outlet grill 37 and heat exchange air suction grill
The integrated air filter 46 is detachably mounted to face 44. The discharge hose 64 protrudes from the lower part of the heat exchange air suction grill 44 substantially at the center of the rear panel 30a. At the lowermost end of the rear panel 30a, a cutout 68 through which a power cord 67 extending from a power supply (not shown) in the main body 30 is inserted is provided at the lowermost end of the drain panel. Further, a hooking projection 69 for hooking a cord clip 68 that bundles the power cord 67 is integrally provided between the suction grill 37 and the heat exchange air suction grill 44.

As shown in FIG. 8, the drain hose storage section 66 is formed. In other words, the cutout 66a extends from the lower edge of the rear panel 30a to a position at a predetermined height from which a plurality of bent pieces 66b are alternately projected in the front-rear direction. These bent pieces 66b are bent in a semicircular shape, and when they are combined with each other, 66b, 66b protruding in the front-rear direction become a perfect circle. The diameter formed by the bent pieces 66b, 66b protruding in the front-rear direction is slightly smaller than the diameter of the drain hose 70 continued to the water receiving tray 56. The upper part of the uppermost curved piece 66b is
The bulging portion 66c is formed to bulge outward.

As shown in FIGS. 9 (A) and 9 (B), a rib 71 is integrally provided on the bottom of the water receiving tray 56. Rib 71 above
Is formed on the concentric circle with the sprinkler 58 with a certain gap around the outer periphery thereof, and is composed of a plurality of divided pieces having a gap therebetween. This height dimension must be set so as to be always higher than the liquid level of the water collected in the water receiving tray 56.

As shown in FIGS. 10 and 11, the drain pan 139 arranged below the evaporator 38 has an opening at the bottom surface of a drain discharge port 72 composed of a plurality of cut and raised portions.
It is communicated with a communication hole 73 provided in 32. One end of a hose (not shown) is connected to the communication hole 73. The other end of the hose is connected to the water tray 56 and drains all the drain water generated by the evaporator 38.
It leads to 56. On the back side of the drain pan 139, a pair of air filter guides 74, 74 are provided. These air filter guides 74, 74 are
In a state where the air filter 46 is mounted on the side surface 0a, the air filter 46 protrudes to come into contact with this side surface.

As shown in FIG. 12 (A), a water supply hose 75 for supplying water to the water tank 60 is formed. This water supply hose 75
Both ends are cylindrical connecting portions 75a and 75b, and these connecting portions 75a and 75b are connected to a flexible and flexible hose portion 75c. The diameter d ₁ φ of one connecting portion 75a is formed smaller than the diameter d ₂ φ of the other connecting portion 75b, and is a size that can be detachably fitted to each other. As shown in FIG. 7B, a part of the peripheral surface of the water tank 60 is substantially semicircular in shape with a hose mounting portion 60.
a is recessed and the radius of curvature is
Is substantially the same as In the figure, a handle portion 76 is integrally provided at an upper end portion, and a water supply opening 77 is protruded at a lower end portion, and a lid 78 having a valve structure is screwed thereto.

As shown in FIG. 12 (C), a water supply hose 75 is wound around the hose mounting portion 60a of the water tank 60. Water supply hose 75 above
The hose portion 75c is extended to some extent, and the other connection portion 75a is inserted into one connection portion 75b to be attached to the water tank 60.

As shown in FIG. 13, an operation panel 80 is provided on a part of the front side of the main body 30. Switches 81 are provided at the upper part of the operation panel 80, and lamps 82 and a power switch 83 are provided at the lower part.
Is provided. In the switches 81, an operation mode switch 84 can select any of ventilation, dehumidification, and cooling. Reference numeral 85 denotes an air volume changeover switch, which can select any one of high, low and automatic as the air volume of the first fan 40. 86 is a timer switch, continuous,
Either timer on after the set time or timer off after the set time can be selected. Reference numeral 87 denotes a temperature setting switch, which can set an arbitrary cooling temperature from a predetermined temperature range. Reference numeral 88 denotes a timer time switch, which can set an arbitrary timer time from a predetermined time range. In the lamps 82, reference numeral 89 denotes an abnormal lamp, which is turned on only when an abnormality such as an abnormally high pressure rise or water outage occurs. Reference numeral 90 denotes a water tank remaining amount lamp which is a notifying means, and is turned on upon receiving a detection signal of the float switch 57. Reference numeral 91 denotes a timer lamp which is turned on when the timer operates. An operation lamp 92 is turned on when the power switch 83 is turned on.

As shown in FIG. 14, a control circuit 93 including a microcomputer provided in the air conditioner includes switches 81 and lamps 82 of the operation panel 80, a float switch 57 provided on the water tray 56, and a refrigeration cycle. The compressor 63, the motor 39, and the alarm buzzer 94, which is a notification unit, are electrically connected.

Next, the operation of the air conditioner thus configured will be described.

As shown in FIG. 1 to FIG. 3 again, the compressor 63 is driven to compress the refrigerant, discharge it in a high temperature and high pressure state. At the same time, power is supplied to the motor 39 so that the first fan 40 and the second fan
50 and the sprinkler 58 are simultaneously driven. The refrigerant is led from the air-cooled heat exchanger 45 to the water-cooled heat exchanger 53, where it exchanges heat and condenses. Further, the pressure is reduced by being guided to the capillary tube 65, and the pressure is reduced to the evaporator 38 to evaporate. The heat exchange air in the heat exchange chamber is guided to the evaporator 38, and exchanges heat with the refrigerant to remove latent heat of evaporation. The heat exchange air lowers in temperature, becomes cold air, and is blown out again into the heat exchange chamber to perform this cooling action.

On the other hand, the first fan 40 takes in the heat exchange air from the suction grill 37 into the cooling room 33. The heat exchange air is filtered by an air filter 46 and then passes through the evaporator 38, exchanges heat with the refrigerant to remove latent heat of evaporation and becomes cool, and enters the casing 43 through the upper and lower suction ports 41a and 41b. Inhaled. Then, the air is again sent to the heat exchange chamber from the outlet 42 of the casing 43 through the cool air outlet grill 36. This cooling action is performed from the place where cool air is blown out to the heat exchange chamber.

As shown in FIGS. 4 and 5 again, the vertical dimension A of the outlet 42 of the casing 43 is made smaller than the dimension B between both ends of the blade of the first fan 40, and the width of the outlet 42 C is considerably larger than the diameter Dφ of the first fan, and is formed substantially close to the front width of the main body 30. Therefore, the cool air blown out by the blowing action of the first fan 40 gradually increases its static pressure in the blowing path from the fan 40 to the air outlet 42, and the flow of the wind is dispersed in the width direction. The air velocity is averaged in a state where the air is actually blown out from the air outlet 42, and a uniform air volume is provided over the width direction of the cool air blow-off grill 36 with a uniform air volume.

Referring again to FIGS. 1 and 4, the first fan
The second fan 50 is driven to rotate together with 40, and heat exchange air is taken into the machine room 34 from the heat exchange air suction grille 44.
At this time, the heat exchange air is filtered by the integrated air filter 46, and the air-cooled heat exchanger 45 is free from dirt. Further, the air-cooled heat exchanger 45 is connected to the evaporator through the partition 32.
Since it was arranged close to 38, the air filter 46 was
It is possible to configure an integral type that filters both the indoor air guided to the evaporator 38 and the heat exchange air guided to the air-cooled heat exchanger 45. Since the partition wall 32 is interposed between the evaporator 38 and the air-cooled heat exchanger 45, there is no hindrance to each heat exchange action. Since the air-cooled heat exchanger 45 is arranged inclined, a sufficient amount of heat exchange air can be secured even if the vertical dimension of the heat exchange air suction grille 44 is reduced.

Except during startup, the air-cooled heat exchanger 45 exchanges heat with the relatively low-temperature, low-humidity heat exchange air in the heat-exchanged chamber where cooling has already been performed. And therefore the heat exchange efficiency is high.

The air that has exchanged heat through the air-cooled heat exchanger 45 is guided into the interior of the casing 47 from the upper suction port 48, and is discharged from the outlet 51 to the outside of the heat exchange chamber via the discharge hose 64.

In addition, the auxiliary suction grill is operated by the action of the second fan 50.
Heat exchange air is sucked into the machine room 34 from 59, and the watering cover
It is guided into the sprinkling cover 55 from a gap between the peripheral surface of the lower end portion of 55 and the peripheral surface of the water receiving tray 56. The heat-exchanged air exchanges heat with the water-cooled heat exchanger 53 arranged in the watering cover 55 and is guided into the casing 47 from the lower suction port 49 and merges with the air exchanged with the air-cooled heat exchanger 45. And is discharged from the discharge hose 64.

The sprinkler 58 rotates with the driving of the motor 39,
Water in the water tray 56 is sucked up from the lower end opening along the inner peripheral surface by centrifugal force. Watering hole 58b and watering hole 58c
Reaches the surrounding area and is sprayed. A water-cooled heat exchanger placed along the perimeter of the sprinkler 58
53 receives water from the water sprayer 58 directly, or water droplets that once pass through the heat exchange pipes constituting the water-cooled heat exchanger 53 and once hit the water spray cover 55 bounce off and are indirectly watered. You. In addition, water droplets received by the upper end of the water-cooled heat exchanger 53 flow down along the lower end. Therefore, the water-cooled heat exchanger 53 receives a uniform watering action regardless of its upper and lower ends, and performs an extremely efficient heat exchange action.

The blades 58a provided on the outer peripheral surface of the water sprinkler 58 stir the air in the water sprinkling cover 55 with rotation, and assist the heat exchange action with the water-cooled heat exchanger 53. At the same time, the water-cooled heat exchanger 53 receives the water droplets that have bounced back and sprays water onto the water-cooled heat exchanger 53 again.

The water-cooled heat exchanger 53 sufficiently receives the watering action of the water sprayer 58 and exchanges heat with the refrigerant guided thereto. Most of the water droplets that have wetted the water-cooled heat exchanger 53 flow down to the water receiving tray 56, are collected, and are watered again by the water sprayer 58. Some of the water droplets evaporate and are guided into the sprinkling cover 55 and mixed with the air that has exchanged heat with the water-cooled heat exchanger 53 to become highly humid air.
Then, the air is guided from the lower suction port 49 of the casing 47 into the inside thereof, and is mixed with the heat exchange air after heat exchange with the air-cooled heat exchanger 45 sucked from the upper suction port 48. The high-humidity air guided from the sprinkling cover 55 side is heated to relatively high-temperature air after heat exchange with the air-cooled heat exchanger 45, and is changed to low-humidity air while being guided from the second fan 50 to the discharge hose 64. Is discharged outside. Therefore, the second fan 50 and the discharge hose
No water droplets adhere to 64.

Eventually, the machine room 34 is provided with a heat exchange air suction grille 44, an air-cooled heat exchanger 45, an upper suction port 48, a second fan 50, and an air outlet.
51, A ventilation path 95 to discharge hose 64, and auxiliary suction grille
From 59, inside the sprinkling cover 55, the lower suction port 49, the second fan 50,
An air outlet 51 and a B ventilation path 96 leading to the discharge hose 64 are formed.

The air-cooled heat exchanger 45 is disposed on the suction side of the A ventilation path 95, and the water-cooled heat exchanger 53 is disposed on the suction side of the B ventilation path 96. Since water droplets sprinkled by the water sprinkler 58 do not adhere to the air-cooled heat exchanger 45, a reliable heat exchange action can be obtained without causing corrosion and without clogging of water droplets. Since the water-cooled heat exchanger 53 receives the water sprinkled by the sprinkler 58 and contacts the heat exchange air guided to the B ventilation passage 96, a reliable heat exchange action can be obtained.

The heat exchange amount Q on the high pressure side is expressed by the following equation.

_{Q = Q 1 + Q 2 Q} 1 = Kc (Tc-Ta) ... heat exchange rate Q ₂ = Cu · G ... heat exchange amount Kc = air-cooled heat exchanger by the water-cooling heat exchanger 53 due to air-cooled heat exchanger 45 Tc = average refrigerant temperature in air-cooled heat exchanger 45 (° C) Ta = suction air temperature of air-cooled heat exchanger 45 (° C) Cu = latent heat of water (Kcal / Kg) G = Water consumption (Kg / h) Assuming that the heat exchange amount Q on the high pressure side is constant, the air-cooled heat exchanger 45 is placed on a ventilation path 95 separate from the water-cooled heat exchanger 53 it by, Tc-Ta is Q ₁ is increased increases to. Instead, Q ₂ becomes smaller and G decreases from the point where Cu is constant. That is. The water consumption is reduced, the continuous operation time is greatly extended as compared with the conventional one, the interval between refilling the water tank 60 with water is lengthened, and the trouble is reduced.

As shown in FIG. 8 again, except for discharging the water collected in the water receiving tray 56, such as during maintenance, the middle part of the drain hose 70 connected to the drain hose 70 is substantially at a right angle as shown by a two-dot chain line. Bend in the direction, and the tip is drain hose storage part 66
Insert inside. The opening at the tip is higher than the water-soluble surface in the water tray 56 so that the water in the water tray 56 can be collected as it is, so that the drain hose 70 can be easily stored.

When cleaning the inside of the water pan 56,
The drain hose 70 is extracted from 66 and extends to the outside of the rear panel 30a. The tip opening is lower than the bottom surface of the water receiving tray 56 and can discharge all the collected water. That is,
The drainage operation in the water tray 56 can be easily performed.

As shown in FIGS. 9 (A) and 9 (B) again, the rib 71 which is integrally provided on the bottom of the water receiving tray 56 is provided with the water sprinkler.
It has a height that surrounds 58 and protrudes above the level of the water collected here, and is formed separately on the concentric circle with the sprinkler 58. Therefore, even if the water level rises as the water sprinkler 58 sucks up the water collected in the water receiving tray 56, the rib 71 acts as a breakwater for eliminating the wave, and the inside of the rib 71 is waved. Do not stand. In addition, since there is no undulation, no undulating noise is generated and noise does not leak to the outside. The lower end opening of the sprinkler 58 inside the rib 71 is always in a state of being immersed from the almost flat water surface to the lower part, so that a predetermined amount of water is constantly sucked up and sprinkled, and there is no unevenness in sprinkling.

As shown in FIGS. 10 and 11 again, the integrated air filter 46 extends over both the suction grille 37 on the evaporator 38 side and the heat exchange air suction grille 44 on the air-cooled heat exchanger 45 side. Opposing air is filtered together with the air sucked into them.
To perform cleaning to prevent this clogging, use the rear panel 30
You can take it out of a and do it once.

After the necessary work is completed, the air filter 46 is inserted again into the back panel 30a. At this time, the lower end of the air filter 46 slides on and guides the air filter guide 74 provided on the drain pan 139. That is, the air filter guide 74 assists the smooth mounting of the air filter 46.

In a state where the air filter 46 is attached to a predetermined portion, the intermediate portion is pressed against a predetermined portion of the rear panel 30a by the air filter guide 74. Therefore,
Even if there is a vibration accompanying the driving, the air filter 46 does not rattle and the generation of chatter noise can be prevented.

As shown in FIG. 12 (C) again, the water supply hose 75 has connection portions 75a and 75b that can be inserted into and removed from each other at both ends, and connects the connection portions 75a and 75b to each other with an extensible hose portion 74c.
It was configured by linking. Therefore, handling of the water supply hose 75 becomes extremely easy. On the other hand, the water tank 60 has a hose mounting portion 60a integrally formed along the peripheral surface thereof.
Is provided. Therefore, the water supply hose 75 can be stored in the main body 30 without creating a special storage space. To supply water to the water tank 60, the connecting portions 75a and 75b are detached from each other and removed from the water tank 60, the hose portion 75c is extended, and one of the connecting portions 75b is connected to the lid 78, for example.
Is connected to the water supply port body 77 from which the water supply port has been removed, and the other connecting portion 75a may be connected to the faucet. That is, the work of supplying water to the water tank 60 can be easily performed.

Referring again to FIGS. 13 and 14, the sprinkler 58
When the water in the water tank 60 is consumed through the water tray 56 by the water spraying action and the float switch 57 detects the required minimum water level below the predetermined liquid level, the detection signal is sent to the control circuit.
Sent to 93. From here the operation tank 80 water tank remaining lamp
Send a signal to 90 to light or flash. at the same time,
Activate the alarm buzzer 94 to notify the user. Desirably, the alarm display is continued until the user supplies water to the water tank 60 and the water is set at a predetermined portion of the main body 30.

Upon receiving the warning display, the user immediately removes the water tank 60 from the main body 30 and disconnects the water supply hose 75 shown in FIGS. 12 (A) and 12 (C) from the water tank 60. Then, water is supplied into the water tank 60 using the water supply hose 75, and the water supply hose 75 is attached to a predetermined portion in the main body 30 again. Since the water tank remaining lamp 90 and the alarm buzzer 94 warn the user that the liquid level of the water receiving tray 56 is at the minimum necessary level, a quick water supply operation is required. And by this,
Comfortable air conditioning can be continued without stopping the cooling operation each time.

An operation panel as shown in FIGS. 15 and 16 may be used.

That is, the operation panel 80A shown in FIG. 15 is provided with a remaining operation time display section 95, which is display means, immediately above the water tank remaining lamp 90. In the apparatus provided with the remaining operation time display section 95, the float switch as the water level detecting means must have a function of sequentially detecting a change in the liquid level in the water receiving tray 56. Then, the detection signal is always sent to the control circuit 93,
The control circuit 93 calculates a change in the liquid level of the water tray 56 from the detection signal of the float switch, estimates the remaining operation time from the result, and makes a digital display on the remaining operation time display unit 95.

The user who sets the timer as necessary may see the time displayed on the remaining operation time display unit 95, make the necessary determination such as whether or not to supply water, and then set the timer. This eliminates such a problem that the operation is stopped within the time after the setting of the timer or the operation is stopped immediately after the start of the operation by the setting of the timer, and the timer effect can be secured.

For example, this operation panel 80A has an economy switch 95
Is provided. By turning on the economy switch 95, the operation in the "economy" mode is performed, and the power consumption is reduced.

That is, with the economy switch 95 turned ON, the control circuit 93 instructs the ON / OFF interval operation of the compressor 63 and sets the motor 39 for rotating the first fan 40 one rank higher than the compressor 63. It controls to make the rotation that goes down.

For example, when the economy switch 95 is turned on and the room temperature is lower than the set temperature, the compressor 63 and the motor 39 are controlled to be off. At this time, if the room temperature is higher than the set temperature, the ON / OFF interval operation of the compressor 63 and the motor 39 is performed.

Specifically, if the room temperature is higher than the set temperature in the range of 0 to 2 ° C when the economy mode is selected, switch ON
After one hour, the compressor 63 is turned on for three minutes and turned off for four minutes. From 1 hour to 2 hours,
The compressor 63 is turned on for 3 minutes and turned off for 7 minutes. After 2 hours, operate the compressor 63 for 3 minutes until the room temperature falls below the set temperature.
Turn on and off for 10 minutes. At the same time, the rotation speed of the first fan 40 is controlled to be lower by one rank than the compressor 63. That is, if the compressor 63 is ON, the air flow of the first fan 40 is M,
If the compressor 63 is OFF, the operation control is performed with the rotation speed reduced so that the air flow of the first fan 40 becomes L.

If the room temperature is 2 ° C. or more higher than the set temperature when the economy mode is selected, the compressor 63 is turned on for 18 minutes and turned off for 3 minutes until one hour after the switch is turned on. Compressor 63 is ON for 5 minutes after 1 hour until 2 hours
And turn off for 7 minutes. After 2 hours, the compressor 63 is turned on for 5 minutes and turned off for 10 minutes until the room temperature falls below the set temperature. At the same time, the number of revolutions of the first fan 40 is
It is the same to make the control lower in rank.

The economy switch 95 that performs such control may be provided in the above-described embodiment, or may be provided in the operation panel 80B described later.

The water tank remaining lamp 90 on the operation panel 80A
In the same manner as in the above embodiment, the water in the water tray 56 may be turned on or blinked in a state where the water in the water tray 56 is minimal, or may be removed and the remaining operation time display section 95
May be replaced by

The operation panel 80B shown in FIG. 16 is obtained by changing the method of reporting the abnormal lamp 89a. That is, abnormal contents are properly used for notification. For example, in spite of the lighting of the water tank remaining lamp 90, when the user leaves the water supply operation and there is almost no water in the water receiving tray 56, the light is turned on and continued. Further, when the high pressure side abnormally rises for some reason, the blinking is continued at predetermined intervals. Therefore, one abnormal lamp 89a can be used in two different ways, and there is no need to provide separately.

[Effects of the Invention] As described above, according to the present invention, the water level detecting means detects the minimum required liquid level of the water collected in the sprinkler,
Since the warning display is made by the notification means, it is possible to know the effective water supply timing, and it is possible to improve the usability.

According to the present invention, since the display means continuously displays the remaining operation time in response to the detection signal of the water level detection means, it is particularly effective when setting a timer, and provides a reliable timer effect. can get.

[Brief description of the drawings]

1 to 14 show an embodiment of the present invention. FIG. 1 is a longitudinal side view of an air conditioner, FIG. 2 is a configuration diagram of a refrigeration cycle, and FIG. 3 is a schematic configuration of an air conditioner. FIG. 4 is a longitudinal sectional side view showing a schematic configuration of an air conditioner, FIG. 5 is a schematic transverse sectional view of a cooling room side, FIG. 6 is a rear perspective view of the air conditioner, FIG. Fig. 8 is a front view of the rear panel partially omitted, Fig. 8 is a longitudinal sectional view taken along the line VIII-VIII of Fig. 7, Fig. 9 (A) is a longitudinal sectional front view of a main part of the sprinkler, Fig. 9 (B). Is a cross-sectional view taken along the line BB in FIG. 9 (A), FIG. 10 is a partially omitted side view showing an enlarged main part of the air conditioner, FIG. 11 is a perspective view of a drain pan, FIG. Figure (A) is a side view of a water supply hose, Figure (B) is a front view of a water tank, Figure (C) is a figure in which a water supply hose is wound around a water tank, Figure 13 is a front view of an operation panel, Fig. 14 is a schematic electric circuit Figure, Figure 15 and Figure 16 shows another embodiment of the present invention, FIG. 15 is a front view of the operation panel,
FIG. 16 is an explanatory view of the operation panel and its display means, and FIG. 17 (A)
1 is a vertical sectional side view of an air conditioner showing a conventional example of the present invention, and FIG. 1 (B) is a vertical sectional front view thereof. 30: air conditioner body, 45: air-cooled heat exchanger, 53: water-cooled heat exchanger, 54: water sprinkler, 57: water level detection means (float switch), 90,94 ... notification means (water tank remaining lamp ,
Alarm buzzer), 95 ... display means (remaining operation time display section).

Claims (2)

(57) [Claims] An air-cooled heat exchanger and a water-cooled heat exchanger obtained by dividing an air conditioner main body, a condenser housed in the air conditioner main body, and constituting a refrigeration cycle; A water sprinkler for spraying water to the heat exchanger
A water level detecting means for detecting a liquid level of water collected in the sprinkler and outputting a detection signal when detecting a minimum required water level;
An air conditioner comprising: a notifying unit that receives a detection signal from the water level detecting unit and displays an alarm. 2. An air-cooled heat exchanger and a water-cooled heat exchanger obtained by dividing an air conditioner main body, a condenser housed in the air conditioner main body and constituting a refrigeration cycle, and a water-cooled heat exchanger. A water sprinkler for spraying water to the heat exchanger
The water level detecting means for constantly detecting a change in the liquid level of the water collected in the sprinkler and outputting a detection signal, and the remaining operation time until the operation is stopped after receiving the detection signal of the water level detecting means are continuously performed. An air conditioner comprising: a display means for displaying a display.