JP4073585B2 - Wall-mounted air conditioner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wall-mounted air conditioner that controls a blowing direction of blowing air at a blowing outlet.
[0002]
[Prior art]
FIG. 7 is a cross-sectional side view of a conventional wall-mounted air conditioner disclosed in, for example, Japanese Patent Laid-Open No. 4-24454. In the figure, 101 is a casing forming an air passage 102, 103 is a blower, 104 is an indoor heat exchanger, 105 is a dew receiving tray that receives drain from the indoor heat exchanger 104, and 108 is a flap that changes the blowing direction up and down. . 109 is a cooling operation counting means, 110 is a heating operation means that performs a heating operation in response to a signal from the cooling operation counting means 109, 111 is a short cycle means that short-cycles the heating operation, and 112 is a heating operation counting means that counts the heating operation. , 113 is a flap driving means for driving the flap 108 by the signals of the heating operation means 110 and the heating operation counting means 112.
[0003]
Next, the operation will be described. After performing the cooling operation for a certain time, the air conditioner main body is dried by forcibly entering the heating operation state and operating the flap 108 so that a blown airflow flows to the inlet side to cause a short cycle.
[0004]
[Problems to be solved by the invention]
In the conventional wall-mounted air conditioner, when the heating operation starts, the temperature of the indoor heat exchanger 104 is low, so that the temperature rise of the hot air blown out is delayed, and it takes time until the room reaches the set temperature. there were.
[0005]
The present invention has been made to solve such problems, and an object of the present invention is to obtain a wall-mounted air conditioner with improved startability at the start of heating operation.
[0006]
[Means for Solving the Problems]
A wall-mounted air conditioner according to the present invention includes an indoor unit main body, a suction port that is provided in the main body and sucks indoor air, and a blowout port that blows out the air heat-exchanged by the indoor heat exchanger into the room. An up-and-down air direction changing device that is provided at the mouth and allows air blown into the room from the up-and-down direction in different directions; a drive device that drives the up-and-down air direction changing device; And a control means for driving the up-and-down air direction changing device by a drive device so as to send out the air blown out to the suction port to form a short cycle.
[0007]
The up / down air direction changing device has a movable vane.
[0008]
In addition, the indoor unit main body, a suction port provided in the main body for sucking indoor air, a blowout port for blowing out the air heat-exchanged by the indoor heat exchanger into the room, and a blowout port provided in the blowout port, Up and down air direction changing device having at least two movable vanes that allow air to be blown out in different directions in the up and down direction, a driving device that drives the up and down air direction changing device, and a blowout port at the start of heating operation And a control means for driving the up-and-down air direction changing device by the driving device so as to send out part of the air blown into the room toward the suction port to form a short cycle.
[0009]
In addition, the wind direction angle of at least one vane is set to an angle that forms a short cycle, and the other vanes are set to an angle that causes downward blowing.
[0010]
In addition, immediately after the start of the heating operation, control is performed so that air is not blown into the room from the air outlet or the angle of the up / down air direction changing device is not down.
[0011]
In addition, a short cycle is formed when the temperature of the indoor heat exchanger reaches a predetermined temperature Ta at the start of heating operation.
[0012]
Further, after the short cycle is formed, when the temperature of the indoor heat exchanger reaches a predetermined temperature Tb (Tb> Ta) or when a predetermined time elapses, the short cycle is not formed and The vertical airflow direction changing device is changed by the driving device so that the air blown to the bottom is blown downward.
[0013]
Moreover, a short cycle is formed when the room temperature at the time when the temperature of the indoor heat exchanger reaches the predetermined temperature Ta at the start of the heating operation is equal to or lower than the predetermined temperature.
[0014]
In addition, a room temperature thermistor for detecting the indoor air temperature is provided in the vicinity of the suction port.
[0015]
Further, an HFC refrigerant is used as the refrigerant, and an alkylbenzene oil, polyol ether oil, ester oil or Teflon oil is used as the compressor oil.
[0016]
Further, an HC refrigerant is used as the refrigerant, and an alkylbenzene oil, polyol ether oil, ester oil or Teflon oil is used as the compressor oil.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to the drawings.
1 to 3 and 5 show the first embodiment, a side view of a wall-mounted air conditioner equipped with a short cycle mechanism, FIG. 2 is a flowchart of a control operation at the start of heating operation, and FIG. 3 is a wall-mounted air FIG. 5 is a side view when the air conditioner is blown down.
[0018]
The configuration of the indoor unit of the wall-mounted air conditioner will be described. In FIG. 1, 1 is a blower, 2 is a cross-flow fan constituting the blower 1, 3 is a casing having an annular ventilation path 4 and housing the cross-flow fan 2, and 5 is provided at the end of the ventilation path 4 of the casing 3. The left and right wind direction vanes 6 and 7 are upper and lower vanes as an example of the up and down air direction changing device. The left and right wind direction vanes 5 and the upper and lower vanes 6 and 7 can each control the blowing air direction by a driving device (not shown). Reference numeral 8 denotes a room temperature thermistor provided in the vicinity of the suction port for detecting the room temperature. The number of upper and lower vanes 6 and 7 is not limited to two.
[0019]
Next, the operation will be described.
In the flowchart of FIG. 2, when the compressor is started to start the heating operation (step 20), since the temperature Tc of the indoor heat exchanger is low, air is not blown or the upper and lower vanes 6, 7 are excluded in order to eliminate the feeling of cold air. The angle is controlled so as not to blow down (step 21).
[0020]
When the temperature Tc of the indoor heat exchanger rises and reaches a certain temperature Ta (step 22), the process proceeds to step 23, and the wind direction angles of the upper and lower vanes 6 and 7 form a short cycle as shown in FIG. Set to an angle. Thereby, it becomes possible to raise the temperature of an indoor heat exchanger earlier by sending the warm air which blows off from a blower outlet to a suction inlet, and reheating with an indoor heat exchanger.
[0021]
In step 24, the short cycle is formed when the temperature Tc of the indoor heat exchanger reaches a certain temperature Tb (Tb> Ta), or when the time Tsh after the short cycle is formed reaches a certain time Tj. Then, as shown in FIG. 5, the upper and lower vanes 6 and 7 are changed so that all the air blown out from the blowout port becomes the lower blowing air.
[0022]
According to the above-described embodiment, the upper and lower vanes 6 and 7 that are provided in the blowout port that blows out the air heat-exchanged by the indoor heat exchanger and that can blow the blown air in different directions, and the upper and lower vanes 6 and 6. 7 is independently driven, and at the beginning of the heating operation, a short cycle is formed in which the air blown from the blowout port is sent out toward the suction port, and is blown out from the blowout port in the steady operation state. Since the angle of the upper and lower vanes 6 and 7 is changed by the driving device so as to send all the wind to the bottom blowing, the time to enter the steady operation state can be shortened, and the room temperature rise during heating operation can be made very fast The effect is obtained.
[0023]
Embodiment 2. FIG.
Embodiment 2 of the present invention will be described below with reference to the drawings.
FIG. 4 is a diagram showing the second embodiment and is a side view of the indoor unit showing another example when a short cycle is formed.
In the second embodiment, at least two upper and lower vanes are required.
The flowchart showing the operation at the beginning of the heating operation is as shown in FIG. 2. When the compressor is started to start the heating operation (step 20), the temperature Tc of the indoor heat exchanger is low, so Or control so that the angle of the upper and lower vanes 6 and 7 does not blow down (step 21).
[0024]
When the temperature Tc of the indoor heat exchanger rises and reaches a certain temperature Ta (step 22), the process proceeds to step 23, and the wind direction angle of the upper and lower vanes 6 is set to an angle that forms a short cycle as shown in FIG. Then, the upper and lower vanes 7 are at an angle at which the lower vane is blown down. Thereby, a part of the warm air blown out from the blowout port is sent out to the suction port and reheated by the indoor heat exchanger, so that the blowout temperature is forcibly increased in the lower blowing direction depending on the set angle of the upper and lower vanes 7. It becomes possible to blow warm air.
[0025]
In step 24, the short cycle is formed when the temperature Tc of the indoor heat exchanger reaches a certain temperature Tb (Tb> Ta), or when the time Tsh after the short cycle is formed reaches a certain time Tj. As shown in FIG. 5, the upper and lower vanes 6 are changed so that all the air blown from the blowout port becomes the lower blowing air.
[0026]
According to the above-described embodiment, the upper and lower vanes 6 and 7 that are provided in the blowout port that blows out the air heat-exchanged by the indoor heat exchanger and that can blow the blown air in different directions, and the upper and lower vanes 6 and 6. 7 at the beginning of the heating operation, by setting the airflow direction angle of the upper and lower vanes 6 to an angle that forms a short cycle, and by setting the upper and lower vanes 7 to an angle at which the lower vane blows down. Forms a short cycle in which a part of the wind blown from the blowout port is sent out toward the suction port, and in the normal operation state, the angle of the upper and lower vanes 6 is driven so as to send all the wind blown out from the blowout port to the lower blow. Since it was changed at the beginning of the heating operation, it was possible to blow out sufficiently hot air from the beginning, and the rise of the room temperature during the heating operation could be made very fast Cormorants effect can be obtained.
[0027]
Embodiment 3 FIG.
Embodiment 3 of the present invention will be described below with reference to the drawings.
FIG. 6 is a diagram showing the third embodiment, and is a flowchart of the control operation at the start of the heating operation.
As shown in step 22a of the figure, the temperature Tc of the indoor heat exchanger shown in step 22 of FIG. 2 in the first embodiment reaches a certain temperature Ta, and further, the temperature Tg at which the room temperature Th is present. At the following time, the process proceeds to step 23 to form a short cycle.
[0028]
In this way, by adding room temperature conditions to the conditions for shifting to the short cycle, if the room temperature thermistor mounting position is in the vicinity of the suction port forming the short cycle, the room temperature thermistor temperature will exceed the actual room temperature due to the short cycle. If the short cycle is performed when the room temperature is high, the difference between the set temperature and the room temperature thermistor disappears, and the compressor may stop. By adding a condition that a short cycle is formed when the room temperature is below a certain temperature, a temperature difference between the set temperature and the room temperature thermistor can be secured, and the compressor can be prevented from stopping.
[0029]
Embodiment 4 FIG.
The wall-mounted air conditioner according to Embodiment 4 of the present invention uses an HFC-based refrigerant such as R410A, R407C, or R32 as the refrigerant in Embodiments 1 to 3.
Further, alkylbenzene oil, polyol ether oil, ester oil or Teflon oil was used as compressor oil.
[0030]
According to the above-described embodiment, since the HFC-based refrigerant is used, the amount of the refrigerant can be reduced, and the recyclability is improved with a safe and simple structure and environment-friendly. In addition, the refrigerant pressure loss is lowered and the rise characteristic can be expected to be improved.
[0031]
Embodiment 5. FIG.
The wall-mounted air conditioner according to the fifth embodiment of the present invention uses HC refrigerants such as R50, R170, R290, R600, R600a, R1150, and R1270 as the refrigerant in the first to third embodiments.
Further, alkylbenzene oil, polyol ether oil, ester oil or Teflon oil was used as compressor oil.
[0032]
According to the above-described embodiment, since the HC refrigerant is used, the amount of the refrigerant can be reduced, and the recyclability is improved with a safe and simple structure and environmentally friendly. In addition, the refrigerant pressure loss is lowered and the rise characteristic can be expected to be improved.
[0033]
In Embodiments 1 to 5, only the change of the air flow control method is performed without adding new parts. In addition, in Embodiments 4 and 5, the amount of refrigerant used can be reduced along with the change of the refrigerant. Recyclability of air conditioner is improved.
[0034]
【The invention's effect】
In the wall-mounted air conditioner according to the present invention, the vertical wind direction changing device is driven by the driving device so as to form a short cycle so as to send out the air blown into the blowout chamber when the heating operation is started. Therefore, it is possible to shorten the time required to enter the steady operation state, and to obtain the effect that the room temperature rise during the heating operation can be performed very quickly.
[0035]
In addition, because the vertical air direction change device is driven by the drive device to form a short cycle so that a part of the air blown into the blower outlet chamber at the start of the heating operation and the indoor unit body is directed toward the suction port Since the high temperature air can be blown down sufficiently from the beginning of the heating operation, the effect that the rising of the room temperature during the heating operation can be performed very quickly is obtained.
[0036]
In addition, immediately after the heating operation is started, air is not blown into the room from the air outlet, or the angle of the up / down air direction changing device is controlled so as not to blow down, so it is possible to eliminate the feeling of cold air at the start of the heating operation.
[0037]
Moreover, since the short cycle is formed from the time when the temperature of the indoor heat exchanger reaches the predetermined temperature Ta at the start of the heating operation, the temperature of the indoor heat exchanger can be increased more quickly.
[0038]
Further, after the short cycle is formed, when the temperature of the indoor heat exchanger reaches a predetermined temperature Tb (Tb> Ta) or when a predetermined time elapses, the short cycle is not formed and The vertical airflow direction change device is changed by the drive device so that the air blown to the bottom is blown down, so the time to enter the steady operation state can be shortened, and the room temperature rise during heating operation can be made very fast An effect is obtained.
[0039]
In addition, when the heating operation starts, a short cycle is formed when the room temperature at the time when the temperature of the indoor heat exchanger reaches the predetermined temperature Ta is equal to or lower than the predetermined temperature, so a temperature difference between the set temperature and the room temperature is secured, This has the effect of preventing the compressor from stopping.
[0040]
Further, by using an HFC or HC refrigerant, the amount of the refrigerant can be reduced, and the recyclability can be improved in a safe and simple structure with respect to the environment. In addition, the refrigerant pressure loss is lowered and the rise characteristic can be expected to be improved.
[Brief description of the drawings]
FIG. 1 shows the first embodiment and is a side view of a wall-hanging air conditioner.
FIG. 2 shows the first embodiment, and is a flowchart of the control operation at the start of heating operation.
FIG. 3 shows the first embodiment and is a side view of the wall-mounted air conditioner when a short cycle is formed.
FIG. 4 shows the second embodiment and is a side view of the wall-mounted air conditioner when a short cycle is formed.
FIG. 5 shows the first embodiment and is a side view of the wall-hanging air conditioner when it is blown down.
FIG. 6 is a diagram showing the third embodiment, and is a flowchart of a control operation at the start of heating operation.
FIG. 7 is a cross-sectional side view of a conventional wall-mounted air conditioner.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Blower, 2 Crossflow fan, 3 Casing, 4 ventilation path, 5 Left and right wind direction vane, 6 Up and down vane, 7 Up and down vane, 8 Room temperature thermistor.

Claims (9)

The indoor unit body,
A suction port provided in the main body, for sucking room air, and a blowout port for blowing out the air heat-exchanged by the indoor heat exchanger;
An up-and-down air direction changing device that is provided at the air outlet and allows air blown into the room from the air outlet in different directions in the vertical direction;
A driving device for driving the up / down air direction changing device;
Control means for driving the up-and-down air direction changing device by the driving device to form a short cycle so as to send out the air blown into the blow-out port chamber at the start of the heating operation toward the suction port,
Immediately after the start of the heating operation, air blowing from the air outlet to the room is stopped, and air blowing from the air outlet to the room is started when the temperature of the indoor heat exchanger reaches a predetermined temperature Ta. A wall-mounted air conditioner characterized by forming.   The wall-mounted air conditioner according to claim 1, wherein the up-and-down air direction changing device has a movable vane. The indoor unit body,
A suction port provided in the main body, for sucking indoor air, and a blowout port for blowing out the air heat-exchanged by the indoor heat exchanger;
An up-and-down air direction changing device having at least two movable vanes provided at the outlet and enabling air blown into the room from the outlet in different directions in the vertical direction;
A driving device for driving the up / down air direction changing device;
Control means for driving the up-and-down air direction changing device by the driving device to form a short cycle so as to send out a part of the air blown into the outlet chamber at the start of the heating operation toward the suction port;
Immediately after the start of the heating operation, air blowing from the air outlet to the room is stopped, and air blowing from the air outlet to the room is started when the temperature of the indoor heat exchanger reaches a predetermined temperature Ta. A wall-mounted air conditioner characterized by forming.   4. The wall-mounted air conditioner according to claim 3, wherein the wind direction angle of at least one vane is set to an angle that forms a short cycle, and the other vanes are set to an angle that causes a downward blow.   After the short cycle is formed, when the temperature of the indoor heat exchanger reaches a predetermined temperature Tb (Tb> Ta) or when a predetermined time has elapsed, the short cycle is stopped from being formed, and the outlet The wall-mounted air conditioner according to claim 1 or 3, wherein the up-and-down air direction changing device is changed by the driving device so that the air blown into the room from below is blown down. Claims temperature before SL indoor heat exchanger and forming a short cycle room temperature starts to blow into the room from the outlet when the following predetermined temperature when it reaches a predetermined temperature Ta The wall-mounted air conditioner according to claim 1 or 3. The wall-mounted air conditioner according to claim 1 or 3, wherein a room temperature thermistor for detecting a room air temperature is provided in the vicinity of the suction port.   4. A wall-mounted air conditioner according to claim 1, wherein an HFC refrigerant is used as the refrigerant, and an alkylbenzene oil, a polyol ether oil, an ester oil or a Teflon oil is used as the compressor oil. .   The wall-mounted air conditioner according to claim 1 or 3, wherein an HC refrigerant is used as the refrigerant, and an alkylbenzene oil, polyol ether oil, ester oil or Teflon oil is used as the compressor oil. .

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