JP2651035B2 - Air conditioner - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and in particular, to control of the blown air.

2. Description of the Related Art In recent years, importance has been placed on the comfort of an indoor environment created by an air conditioner.

As a conventional technology, for example, as disclosed in Japanese Utility Model Application Laid-Open No. 61-3337, there is a cooling and heating device using a floor.

Hereinafter, a conventional air conditioner will be described with reference to FIGS. 7 to 13.

FIG. 7 is a cross-sectional side view of a conventional cooling and heating device during heating. In FIG. 7, reference numeral 1 denotes a room. 2 is a floor and 2a is a floor slab. 1 'is a downstairs room,
3 is this ceiling board. Reference numeral 4 denotes a space formed between the floor 2 and the ceiling plate 3. Reference numeral 5 denotes a heat pump type air conditioner arranged near the outer wall of the space 4. Reference numeral 6 denotes an air supply duct of the heat pump type air conditioner 5.
Reference numeral 7 denotes a damper that switches an air path according to cooling and heating. Reference numeral 8 denotes a heating room formed by the floor slab 2a and the wall plate 11. 8a is a partition wall of the heating chamber 8. 8b is a vent formed at the end of the partition wall 8a. Reference numeral 9 denotes an air outlet for blowing warm air into the heating chamber 8 during heating. Reference numeral 10 denotes an air outlet for blowing cool air into the chamber 1 during cooling. Reference numeral 12 denotes an air supply port of the heat pump type air conditioner 5. Reference numeral 13 denotes a communication port communicating with the heating chamber 8 and the space 4. A communication port 14 communicates with the chamber 1 and the heating chamber 8.

The operation of the cooling and heating device configured as described above will be described below.

First, at the time of heating, the warm air heated by the heat pump type air conditioner 5 is sent to the air supply duct 6. Then, the dam bar 7 is operated as shown in FIG. 13, and the hot air is sent to the blowing port 9 and flows into the heating chamber 8. At this time, the floor slab 2a is heated by the warm air, and the room 1 is heated by natural convection generated by the heat of the floor surface. Then, the warm air in the heating chamber is supplied to the vent hole as shown by a solid arrow in FIG.
After passing through 8b, as shown in FIG. 9, it flows out of the communication port 13 into the space 4, and is returned to the air supply port 12.

Next, at the time of cooling, the damper 7 closes the air outlet 9 so that the cool air cooled by the heat pump type air conditioner 5 is directly blown out from the air outlet 10 to the chamber 1 as shown in FIG. I do. The cool air that has cooled the chamber 1 reaches the space 4 through the communication ports 14 and 13 as shown in FIG.

Problems to be Solved by the Invention However, the above-described configuration has a problem that it takes time for the room to reach the set temperature at the start of operation because warm air is not directly blown into the room during heating. In addition, since the floor slab is heated by warm air and the room is heated by natural convection generated by the heat of the floor, there is a problem that heat loss to the floor is large and heating efficiency is poor.

In addition, cold drafts (cool air convection) from the windows during heating, in particular, could not cope with the phenomenon that the feet of residents near the windows became cold.

The present invention solves the above-mentioned problem, and at the time of starting the heating operation, the interior can be quickly set to the set temperature, the heating efficiency can be improved, and there is a configuration that can cope with fluctuations in the perimeter load. To provide an air conditioner capable of air-conditioning with a warm head and cold feet at the feet.

Means for Solving the Problems In order to achieve this object, the air conditioner of the present invention comprises an indoor unit having a heat exchanger and a blower for blowing temperature-controlled air conditioned by the heat exchanger. What is claimed is: 1. A floor-mounted air conditioner installed on one corner of a floor, comprising: a double floor on which the indoor unit is mounted to form a lower space between the indoor unit and a floor; A mouth, an upper outlet provided on the upper surface of the indoor unit, a lower outlet provided on the lower surface of the indoor unit and communicating with the lower space, an outlet of the blower, the upper outlet, and the lower outlet An air passage that communicates with
A blow-off branching means provided at a branch point of a wind path from the outlet of the blower to the upper blow-out port and a branch of a wind path from the blower outlet to the lower blow-out port to change a blow-off air flow splitting ratio; and the indoor unit. A ventilation opening communicating between the lower space and the room provided at the end of the double floor near the side wall of the room separated from the room, and a perimeter room temperature provided between the suction opening and the heat exchanger. Perimeter room temperature detecting means for detecting, a wireless remote controller for selecting a temperature setting and a mode of cooling / heating, a living room room temperature detecting means provided on the wireless remote controller for detecting a living room room temperature, and the blowoff branching means Computing means for controlling the air flow, wherein the computing means is configured to perform upward blowing when the difference between the set temperature during the heating operation and the living room room temperature detected by the living room room temperature detecting means exceeds a predetermined temperature and during the cooling operation. Only When the difference between the set temperature and the living room room temperature is less than or equal to a predetermined temperature during the heating operation, the living room room temperature is determined according to the difference between the living room room temperature and the perimeter room temperature detected by the perimeter room temperature detecting means. And the perimeter section room temperature, the smaller the difference is, the larger the air flow splitting ratio from the lower air outlet is, and the lower the perimeter room temperature is not substantially equal to the living area room temperature, the lower air blowing section only performs lower air blowing. Is controlled.

The air conditioner of the present invention has the above-described configuration, and when the difference between the set temperature and the living room room temperature detected by the living room room temperature detecting means exceeds a predetermined temperature during the heating operation and during the cooling operation, only the upper blowing is performed. If the difference between the set temperature and the living room room temperature is less than or equal to the room temperature during the heating operation, the living room room temperature and the perimeter room temperature are changed according to the difference between the living room room temperature and the perimeter room temperature detected by the perimeter room temperature detecting means. The smaller the difference is, the larger the ratio of the amount of air blown out from the lower outlet is increased. If the room temperature of the perimeter is not substantially equal to the room temperature of the living area, only the lower outlet is used.

Accordingly, when the difference between the set temperature and the living area temperature is large, such as at the start of a heating operation, all the warm air is blown from the upper outlet to directly warm the living area, and control is performed so as to quickly approach the set temperature.

On the other hand, the living area temperature rises, is close to the set temperature, and
When the difference between the living area temperature and the perimeter room temperature is large, control is performed so that part of the hot air is sent out from the lower outlet. As a result, the double floor is gradually warmed while responding to the perimeter load by the upper blowing, and the effect of heating at the feet gradually appears.

Then, when the room temperature of the perimeter section becomes substantially equal to the living area temperature, all the warm air is blown downward by the blowoff branching means, and the double floor is warmed by the warm air and blown out from the ventilation opening. As a result, while having a floor heating effect, convection heating can be performed by blowing warm air upward along the side wall from the ventilation opening at the end of the double floor, and the warm air does not directly hit people in the living area. Since heating can be performed, air conditioning can be performed without discomfort due to airflow, and there is almost no temperature distribution, and it is possible to provide an ideal heating space of a cold-head type.

In addition, during cooling operation, convection cooling is performed by blowing cool air upward from the upper outlet of the upper surface of the indoor unit along the side wall and descending by the own weight of the cool air to suck in the air through the inlet provided at the lower front part of the indoor unit. It is possible to cool the head and feet with no flu.

Therefore, there is no discomfort due to the wind in both the cooling and heating, and the installation of the furniture is not affected, and an ideal thermal environment of a head-and-foot type is obtained.

Embodiment An embodiment of the present invention will be described below with reference to FIGS.

21 is a side wall, 22 is a floor slab, and 23 is a ceiling. 24 is a living area where humans live, and the height is 180 in ASHRAE, STANDARD
It is defined as a space of 0 mm or less and 600 mm or more from the side wall (a space surrounded by a two-dot chain line in FIG. 2). Reference numeral 25 denotes an indoor unit of the air conditioner, which is installed on a corner of the room.

The indoor unit 25 includes an outer shell 26, a heat exchanger 27, a blower 28, a casing 29, and a blow-off / diverting unit 30 having a fulcrum at the outer shell 26 and driven by an electric motor (not shown). 31,
A lower outlet 32 is provided on the lower surface, and communicates with an air passage 33 behind the indoor unit 25.

The upper outlet 31 is provided with a plurality of louvers 34 so that the outlet angle can be arbitrarily changed. In addition, a suction port 35 is provided at a lower portion of the front surface of the indoor unit 25, and a verimeter (near a window) room temperature sensor 36 for detecting a suction temperature is provided between the suction port 35 and the heat exchanger 27.

37 is a double floor, and 38 is a lower space formed by the floor slab 22 and the double floor 37.

 The lower outlet 32 communicates with the lower space 38.

Reference numeral 39 denotes a ventilation port which communicates with the room at the end where the double floor 37 and the side wall 21 meet, and this position corresponds to the lower outlet 32.
As far as possible, and 600 mm from the side wall 21
The best position is within a range that does not interfere with human access or office furniture (such as archives).

And a wireless remote control 40 that controls the air conditioner
In addition, a living room temperature sensor 41 is provided.

The operation of the air conditioner configured as described above will be described with reference to a flowchart (FIG. 6).

After turning on the power with the wireless remote controller 41, set the temperature of the room 1
_Tset is performed (step 42), and at the same time, a cooling / heating mode is selected (step 43).

First, during the heating operation, the living room room temperature sensor 41 detects the living room room temperature T _i (step 44), and calculates the difference θ ₁ between the set temperature T _set and the living room room temperature T _i detected by the living room room temperature sensor 41. (Step 45).

Here, when θ ₁ = T _set −T _i > 10 ° C. is satisfied (when YES), and when the room temperature in the living area is lower than the set temperature by 10 ° C. or more, the outlet branching means 30 is set so that the upper outlet is 100%. Rotates downward (FIG. 3), and closes the air path 33 to the lower outlet 32 (step 46). That is, when the living area 24 is cold, control is performed such that warm air is directly sent into the living area to quickly approach the set temperature _Tset .

Further, theta _1> 10 If ℃ not satisfied (when NO) detects the perimeter portion room temperature T _p by perimeter portion temperature sensor 36 (step 47), the occupied zone at room temperature T _i and the perimeter portion room temperature T _p
Calculating a difference theta ₂ between (step 48).

If θ ₂ = T _i −T _p > 5 ° C. is satisfied, the vane of the blow-off branching means 30 rotates slightly upward so that the upper blow-out is set to 70% and the lower blow-out is set to 30% (step 49). It stops at the position 30a in FIG. As a result, the floor is warmed slightly, while warming up the living area and responding to the perimeter load, and heating from below is used in parallel.

When 5 ≧ θ ₂ > 2 ° C., the vane of the blow-off branching means 30 is rotated further upward so that the lower blow-out is set to 70% and the upper blow-out is set to 30% (step 5%), and 30b Stop at the position.

In other words, since the room temperature has come close to the set temperature,
The rate of directly heating the living area 24 has been reduced, and it has been switched to a floor heating center type. In this case as well, although the heating is of the floor heating center type, the upper blowout corresponds to the perimeter load.

If the condition of θ ₂ ≦ 2 ° C. is satisfied, all the temperatures are blown downward (step 51), and the warm air blown out from the lower blow-out port 32 passes through the lower space 38, and while the double floor 37 is warmed, Proceed to 39 and blow into Room 1. In other words, when the room temperature and the set temperature are close to each other, warm air is passed through the lower space 38 of the double floor 37 to warm the entire floor and realize radiant floor heating (solid arrows in FIG. 2).

Next, during cooling operation, unconditionally blow up 100% (step 4
6), and cool air is blown upward from the upper outlet 31 (dotted arrow in FIG. 2). Then, the cool air that has flowed upward hits the ceiling 23, from which it descends while spreading downward by its own weight. And the living area 24
Is cooled and then sucked into the suction port 35 (FIG. 3).

As described above, in the present embodiment, the heat exchanger 27 and the heat exchanger 27
An indoor unit 25 that incorporates a blower 28 that blows tuned air that is air-conditioned by the floor slab 22 on which the indoor unit 25 is mounted and a floor slab installed on one corner of the room. A double floor 37 that forms a lower space 38 between them, a suction port 35 provided at the lower front of the indoor unit 25, an upper outlet 31 provided on the upper surface of the indoor unit 25, A lower air outlet 32 provided on the lower surface and communicating with the lower space 38, an air passage 33 communicating the outlet of the blower 28 with the upper air outlet 31 and the lower air outlet 32, and heading from the outlet of the air blower 28 to the upper air outlet 31. A blow-off branching means 30 provided at a branch point of the wind path 33 from the outlet of the wind path 33 and the blower 28 toward the lower blow-out port 32 for changing the upper and lower blow-off air flow splitting ratio; and a side wall 21 of the room remote from the indoor unit 25 A ventilation opening 39 communicating between the lower space 38 provided at the end of the nearby double floor 37 and the room, and a perimeter provided between the suction opening 35 and the heat exchanger 27 are provided. Over data part room temperature T _p
A perimeter portion temperature sensor 36 for detecting a a wireless remote controller 40 for selecting the temperature setting and the cooling and heating mode, the occupied zone temperature sensor 41 for detecting the occupied zone room temperature T _i provided in the radio remote controller 40, consists of a computing unit for controlling the outlet flow diverters 30, calculating means, the difference between the occupied zone room temperature T _i that detects the set temperature T _sET at the time of heating operation occupied zone temperature sensor 41 theta ₁
When the temperature exceeds the specified temperature (10 ° C) and during cooling operation
31 only, set temperature T _SET and living room room temperature T _i during heating operation
It occupied zone at room temperature if the difference theta ₁ is less than a predetermined temperature (30 ° C.) with
The smaller the difference θ ₂ between the living room room temperature T ₁ and the perimeter room temperature T _p becomes in accordance with the difference θ ₂ between T _i and the perimeter room temperature T _p detected by the perimeter room temperature sensor 36, the smaller the difference from the lower outlet 32 becomes. increasing the airflow volume diversion ratio, since the structure perimeter portion room temperature T _p is to control the outlet flow diverters 30 to only blow down if approximately equal to the occupied zone room temperature T _i, and occupied zone at room temperature at the start of the heating operation When the difference between the set temperatures is large (for example, at the beginning of the operation), the vane of the blow-off / diverting means 30 is driven to blow warm air from the upper blow-out port 31 to directly flow in the living area 24 while corresponding to the perimeter load. Heat it. on the other hand,
When the difference between the room temperature and the set temperature of the living area becomes smaller, a part of the warm air is gradually sent to the lower space 38 of the double floor 37, and the vane of the blow-off / diverting means 30 is driven so that the warm air blows out from the ventilation port 39. Let it. In this case as well, the upper blowout which becomes a floor heating center type corresponds to the perimeter load. If the difference between the room temperature and the set temperature is small, and the difference between the room temperature and the perimeter room temperature is small, control is performed so that all of the warm air is sent to the lower space 38.

As a result, mild heating can be achieved from both the heating effect by the natural convection from the entire heated double floor and the heating effect by the blowing of warm air from the ventilation opening.

As a result, the rising performance at the time of heating is good, and when approaching a steady operation state, it is possible to make a living space close to floor heating, so that it is possible to heat the head with a cold head and a little heat without discomfort due to the wind with almost no vertical temperature distribution. .

Also, during cooling, the cool air is blown upward from the upper outlet 31 and hits the ceiling, and then cools down naturally by its own weight, so that a very uniform temperature distribution without discomfort due to wind is obtained, and high quality Air conditioning can be realized.

In this embodiment, the setting criterion for the ratio of the blown outflow is 10 ° C, 5 ° C, 2
Although it is set to ° C., this value varies depending on the room size, the load, and the like, and is not unique.

Further, in the present embodiment, the lower space is formed by the double floor, but it goes without saying that the same effect can be obtained even if the lower space is provided under the floor.

Effect of the Invention As is clear from the above embodiments, the present invention provides an indoor unit having a built-in heat exchanger and a blower for blowing temperature-controlled air conditioned by the heat exchanger, which is installed in a corner of a room. A floor-standing type air conditioner, wherein the indoor unit is mounted and forms a lower space between the indoor unit and the floor, a suction port provided at a lower front part of the indoor unit, An upper outlet provided on the upper surface of the unit, a lower outlet provided on the lower surface of the indoor unit and communicating with the lower space, and a wind connecting the outlet of the blower, the upper outlet and the lower outlet. Path, blow-off branch means provided at a branch point of a wind path from the outlet of the blower to the upper blow-out port and a branch of a wind path from the outlet of the blower to the lower blow-out port, and changing upper and lower blow-off air flow splitting ratios,
A vent opening provided at an end of the double floor near the side wall of the room distant from the indoor unit, for communicating the room with the lower space; and a perimeter provided between the suction port and the heat exchanger. Perimeter room temperature detecting means for detecting a room temperature, a wireless remote controller for selecting a temperature setting and a mode of cooling / heating, and a living room room temperature detecting means provided in the wireless remote controller for detecting a living room room temperature, Computing means for controlling the blow-off and diverting means, wherein the computing means is configured to perform a heating operation when the difference between the set temperature and the living area room temperature detected by the living area room temperature detecting means exceeds a predetermined temperature, and during a cooling operation. Is only the upper blowing, and when the difference between the set temperature and the living room room temperature is less than or equal to a predetermined temperature during the heating operation, the difference between the living room room temperature and the perimeter room temperature detected by the perimeter room temperature detecting means is calculated. Depending The smaller the difference between the room temperature of the living area and the room temperature of the perimeter section, the larger the ratio of the flow rate of the air flow from the lower outlet to the lower flow rate. If the room temperature of the perimeter section is not substantially equal to the room temperature of the living area, only the lower blow-out is performed. The configuration is such that the blow-off / diverting means is controlled.

In this way, when the difference between the set temperature and the living area temperature during the heating operation is large (such as at the start of the heating operation), all the warm air is blown from the upper outlet to directly warm the living area and quickly approach the set temperature. To control.

On the other hand, the living area temperature rises, is close to the set temperature, and
When the difference between the living area temperature and the perimeter room temperature is large, control is performed so that part of the hot air is sent out from the lower outlet. As a result, the double floor is gradually warmed while responding to the perimeter load by the upper blowing, and the effect of heating at the feet gradually appears.

Then, when the room temperature of the perimeter section becomes substantially equal to the living area temperature, all the warm air is blown downward by the blowoff branching means, and the double floor is warmed by the warm air and blown out from the ventilation opening. As a result, while having a floor heating effect, convection heating can be performed by blowing warm air upward along the side wall from the ventilation hole at the double floor end, and the human in the living area is not directly hit by the warm air. Since heating can be performed, air conditioning can be performed without discomfort due to airflow, and there is almost no temperature distribution, and it is possible to provide an ideal heating space of a cold-head type.

In addition, during cooling operation, convection cooling is performed by blowing cool air upward from the upper outlet of the upper surface of the indoor unit along the side wall and descending by the own weight of the cool air to suck in the air through the inlet provided at the lower front part of the indoor unit. It is possible to cool the head and feet with no flu.

Therefore, there is no discomfort due to the wind in both the cooling and heating, and the installation of the furniture is not affected, and an ideal thermal environment of a head-and-foot type is obtained.

[Brief description of the drawings]

1 is a sectional view of a main part of an air conditioner according to an embodiment of the present invention, FIG. 2 is a sectional view of a room in which the air conditioner is installed,
3 and 4 are cross-sectional views of main parts of the air conditioner in each operation state, FIG. 5 is a perspective view of a room in which the air conditioner is installed in a normal operation during heating, and FIG. FIG. 7 is a cross-sectional view of the conventional air conditioner during heating, FIG. 8 is a plan view taken along the line II-II of FIG. 7, and FIG.
FIG. 10 is a sectional view taken along the line III-III in FIG. 8, FIG. 10 is a sectional view during conventional cooling, FIG. 11 is a plan view taken along the line VV in FIG. 10, and FIG. 13 is an enlarged sectional view of a part corresponding to FIG. 25 …… Indoor unit, 27 …… Heat exchanger, 28 …… Blower, 30 ……
Blow-off means 31, 31 Upper outlet 32 Lower outlet 33
... air passage, 36 ... perimeter room temperature sensor, 37 ... double floor, 38 ... lower space, 39 ... ventilation passage, 40 ... wireless remote control, 41 ... room temperature sensor for living area.

Claims (1)

(57) [Claims] 1. A floor-mounted air conditioner in which an indoor unit including a heat exchanger and a blower for blowing temperature-controlled air air-conditioned by the heat exchanger is installed on one corner floor of the room. ,
A double floor on which the indoor unit is mounted and forms a lower space between the floor and a suction opening provided at a lower front part of the indoor unit,
An upper outlet provided on the upper surface of the indoor unit, a lower outlet provided on the lower surface of the indoor unit and communicating with the lower space,
An air passage communicating the outlet of the blower, the upper outlet and the lower outlet, an air passage from the outlet of the blower to the upper outlet, and an air passage from the outlet of the blower to the lower outlet. A blow-off branching means provided at a branch point for changing the upper and lower blow-off air flow splitting ratios, and the lower space provided at the end of the double floor near the side wall of the room remote from the indoor unit and the room communicate with each other A ventilation port, a perimeter room temperature detecting means provided between the suction port and the heat exchanger for detecting a perimeter room temperature, a wireless remote controller for selecting a temperature setting and a cooling / heating mode, and the wireless A living room room temperature detecting means provided in the remote controller for detecting the living room room temperature, and a calculating means for controlling the blow-off branching means, wherein the calculating means includes a set temperature and a living room room temperature detecting means during a heating operation. Detect the said When the difference between the living room room temperature exceeds the predetermined temperature and during the cooling operation, only the upper blowing is performed, and when the difference between the set temperature and the living room room temperature is less than or equal to the predetermined temperature during the heating operation, the living room room temperature and the In accordance with the difference between the perimeter room temperature detected by the perimeter room temperature detection means, the smaller the difference between the living room room temperature and the perimeter room temperature is, the larger the ratio of the amount of air blown out from the lower outlet is increased. An air conditioner characterized by controlling the blow-off branch means so that only lower blow-off is performed if the room temperature is not substantially equal to the room temperature.