Ventilation – Having forced recirculation – Including automatic control means
Reexamination Certificate
1999-06-04
2001-01-09
Joyce, Harold (Department: 3744)
Ventilation
Having forced recirculation
Including automatic control means
C237S00200B
Reexamination Certificate
active
06171185
ABSTRACT:
CLAIM OF PRIORITY
This application makes reference to, incorporates the same herein, and claims all benefits accruing under 35 U.S.C. § 119 from an application for POWER SAVING OPERATIONAL CONTROL METHOD OF AIR CONDITIONER earlier filed in the Korean Industrial Property Office on Nov. 27, 1998 and there duly assigned Serial No. 51402/1998.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an air conditioner adapted to shorten an on-time of a compressor by establishing a higher power saving set-up temperature than a user set-up temperature during a normal operation to thereby perform a power saving operation, and more particularly to a power saving operational control method of an air conditioner adapted to control directions of air discharged during the power saving operation, thereby increasing a power saving effect of the air conditioner.
2. Description of the Related Art
Generally, an air conditioner is divided into various kinds according to its construction and function. The air conditioner can be divided into exclusive cooling, exclusive cooling and dehumidifying, and cooling and heating dual operations in view of function. The air conditioner can be also divided structurally into an integrated type installed at a window sill for integrating the cooling an heat-radiating functions and a separation type having a cooling apparatus indoors while installing a heat-radiating and compressing apparatus outdoors.
The separation type of air conditioner includes a multi-type which has one outdoor unit connected to more than two indoor units for air conditioning a plurality of indoor spaces.
FIG. 1
illustrates an indoor unit of a separation typed air conditioner for dual function of cooling and heating operations. As shown in
FIG. 1
, the air condition includes an indoor unit
1
, a suction inlet
3
, and an outlet
5
. The outlet
5
further includes a remote controlled signal receiver
7
for receiving a remote-controlled signal transmitted from a remote controller
9
(hereinafter referred to a remocon) and vertical vanes
11
for vertically controlling directions of air and horizontal vanes
13
for horizontally controlling directions of the air. Meanwhile, the remocon
9
is mounted with a plurality of operation mode keys for inputting operation/stop of the air conditioner, operation selection (automatic, cooling dehumidifying, blowing, heating, power-saving and the like), air amount selection (high wind, intermediate wind, low wind and the like), turbo, mild, temperature adjustment and the like, and a plurality of timer mode keys for inputting present time, handy reservation, start/completion and the like.
FIG. 2
is a side sectional view for illustrating an indoor unit installed on a wall surface, where like reference numerals are used for designation of like or equivalent parts or portions and redundant references will be omitted.
As shown in
FIG. 2
, the indoor unit
1
is provided therein with an indoor heat exchanger
15
disposed at the rear of the suction inlet
3
for heat-exchanging room air sucked through the suction inlet
3
into cooling air or heating air, an indoor fan
17
disposed at the rear of the indoor heat exchanger
15
for discharging indoors the air heat-exchanged by the indoor heat exchanger
15
, and a duct member
19
for guiding the flow of air sucked through the suction inlet
3
and discharged to the outlet
5
. Unexplained reference numeral
21
is an evaporative water dish.
In an inverter type air conditioner used for dual purpose of cooling and heating operations thus structured, refrigerant flows through a refrigerant cycle during a heating operation which is formed by, as illustrated in
FIG. 3
is dotted arrow, a compressor
30
→four-way valve→
31
→indoor heat exchanger
15
→capillary tube
50
→outdoor heat exchanger
40
→four-way valve
31
→compressor
30
, while the four-way valve
31
is turned on.
Meanwhile, during a cooling operation, the four-way valve
31
is rendered inactive and the refrigerant flows through a refrigerant cycle which is formed by, as illustrated in
FIG. 3
is solid arrow, the compressor
30
→four-way valve
31
→outdoor heat exchanger
40
→capillary tube
50
→indoor heat exchanger
15
→four-way valve
31
→compressor
30
.
In the air conditioner for executing the dual purpose of heating and cooling operations by forming the refrigerant cycle thus described, when a user manipulates the remocon
9
and presses an operation/stop key (hereinafter called as operation key) to input a desired operation mode (by way of example, cooling), a set-up temperature Ts and a set-up air amount, a remote control signal corresponding the key input is coded by a predetermined protocol, where the coded signal is modulated to be transmitted in an ultrared signal.
When the ultrared signal is transmitted from the remocon
9
, the signal is received by the remocon signal receiver
7
to thereafter be converted to an electric signal. The converted electric signal is demodulated to start the operation of the indoor unit
1
. At this moment, the indoor fan
17
is rotated according to set-up air amount and room air is sucked into the indoor unit
1
through the suction inlet
3
.
Successively, when the temperature of room air sucked through the suction inlet
3
is detected by a temperature sensor (not shown) in the indoor unit
1
, the indoor unit
1
compares room temperature Tr with the set-up temperature Ts transmitted from the remocon
9
, and if the room temperature Tr is higher than the set-up temperature Ts, the compressor
30
is turned on, as illustrated in FIG.
4
.
When the compressor
30
is rendered active, a refrigerant loop is formed in a slid arrow as illustrated in FIG.
3
. In other words, when gaseous refrigerant of high pressure and high temperature discharged from the compressor
30
at the outdoor unit is infused into the outdoor heat exchanger
40
via the four-way valve
31
, the outdoor heat exchanger
40
heat-exchanges the gaseous refrigerant compressed in high temperature and high pressure to air blown by an outdoor fan
41
, forcibly cool and condense same, where liquefied refrigerant of low pressure and low temperature condensed by the outdoor heat exchanger
40
is infused into the capillary tube
50
.
The liquefied refrigerant of low pressure and low temperature infused into the capillary tube
50
is expanded to frostless refrigerant of evaporable low pressure and low temperature and infused into the indoor heat exchanger
15
at the indoor unit
1
.
The indoor heat exchanger
15
takes away heat from the air blown by the indoor fan
17
to thereby cool the room air when the frostless refrigerant of low pressure and low temperature reduced in pressure by the capillary tube
50
passes via a plurality of pipes to be evaporated and to be gasified.
The cool air heat-exchanged by the indoor heat exchanger
15
is adjusted horizontally and vertically in directions thereof by angles of the vertical vanes
11
and horizontal vanes
13
to perform the cooling operation, whereby, the gaseous refrigerant of low pressure and low temperature cooled by the indoor heat exchanger
15
is again infused into the compressor
30
via the four-way valve
31
and is changed to refrigerant gas of high pressure and high temperature by adiabatic compressing action of the compressor
30
to thereafter repeat the refrigerant cycle thus described.
When the cooling operation thus described is executed for a predetermined time, room temperature is gradually lowered and the room temperature Tr being changed is measured, where, the compressor
30
is turned off when the room temperature Tr reaches the set-up temperature Ts, as illustrated in FIG.
4
.
When the compressor
30
is rendered inactive and the room temperature Tr is gradually increased to reach the set-up temperature plus (+) 1, the compressor
30
is again turned on, as illustrated in
FIG. 4
, to repeat an operation of decreasing the room temperature Tr to the set-up t
Boles Derek S.
Bushnell , Esq. Robert E.
Joyce Harold
Samsung Electronics Co,. Ltd.
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