JPH0150817B2 - - Google Patents

Description

[Detailed description of the invention]

<Industrial Application Field> The present invention relates to a blower-type air-conditioning/heating machine (including a cooling-only machine, a heating-only machine, and a dual-purpose cooling/heating machine) which are mainly used as air conditioners in general households and various offices. <Conventional technology> Conventional blower-type air-conditioning/heating machines have an arbitrary capacity, but whether they are floor-standing or ceiling-mounted, they suck indoor air from a certain height level and then It was a single circulation path system in which the air was cooled or heated through a heat exchanger, and then the cold or warm air was blown into the room at a specific height level that did not interfere with the suction indoor air. Furthermore, it has been known that the above-mentioned single-circulation type air conditioner/heater is combined with a circulator that forces indoor air to circulate generally in the vertical direction. <Problems to be Solved by the Invention> However, in the case of the former type of cooling and heating by independent operation of a single-circulation type air-conditioning/heating machine, the type of installation of the equipment, cold air or warm air (hereinafter referred to as fumarole is also a synonym) Although there are some differences depending on the blowing direction, as will be explained later, improvements are generally needed in terms of indoor temperature distribution, and in the latter case, when a circulator is used together, the circulator is installed near the ceiling and the indoor air is Since it is a type that blows out downwards, the indoor air circulates near the circulator in a short circuit and the fumes are agitated, making it impossible to obtain a stable circulation effect and making little progress in improving indoor temperature distribution. It is no exaggeration to say that it is ineffective. Each problem will be described based on the results of experiments conducted by the present inventors in the case of independent operation of the air conditioner/heater. For heating (heating machine: 9900Kcal/h, 25
(m/min) (1) When a floor-standing type blows out fumes horizontally As clearly shown in the temperature distribution map in Figure 21, the temperature in the upper part of the room reaches over 30℃, but the temperature near the floor is around 20℃. There is a large temperature difference between the top and bottom. This is because warm air rises and cold air falls, and in this state, air circulation always occurs above the middle layer of the room, and the cold air in the lower layer does not flow and stagnates. It is. Moreover, since there are various obstacles such as desks and chairs in the room, the above-mentioned tendency is actually more noticeable. (2) When the fumarole is oriented 30 degrees downward from the horizontal plane in a floor-standing type As clearly shown in the temperature distribution map in Figure 22, the fumes are blown onto the floor surface, eliminating the accumulation of cold air and increasing the temperature of the lower layer. The temperature rises and the temperature difference between the top and bottom decreases, but on the other hand, in this case, as is clear from the temperature distribution map at 1 meter from the floor shown in Figure 23, there is a localized high temperature area in the center of the room. Moreover, this occurs near the head of a person when sitting on a chair, and the hot fumes are directly blown onto the area, causing discomfort and also being unfavorable from a health perspective. (3) When a ceiling-suspended type blows out fumes horizontally As clearly shown in the temperature distribution chart in Figure 24, there is a large temperature difference between the upper and lower parts of the room.
In particular, there is a hot air layer on the ceiling and a cold air layer on the floor, making the temperature difference even larger than in (1) above. (4) When the fumarole is angled downward at 50 degrees from the horizontal plane in a ceiling-suspended type.As is clear from the temperature distribution diagram in Figure 25,
Fumes at a temperature of approximately 30°C reach 1.5 meters from the floor, but the temperature in the corners of the room is below 20°C. Furthermore, as shown in the airflow distribution map in Figure 26, an uncomfortable airflow of 0.5m/s or more is generated in the central area, which is the living zone, about 1.5m from the floor. As mentioned above, in the case of heating, regardless of whether it is a floor-standing type or a ceiling-mounted type, the difference in temperature between the top and bottom of the room is large, making your feet cold. This creates an unavoidable problem in which high-temperature areas occur and hot air with a high flow velocity hits the occupants, causing discomfort and even harming their health. In the case of air conditioning (1) In the case of floor-standing type From the comparison of the temperature distribution diagram for the upward 30° air outlet shown in Figure 27 A and the temperature distribution diagram for the horizontal air outlet shown in Figure 27 B, the latter Horizontal air blowing is more effective in equalizing the indoor temperature, but if the air outlet is placed too low, hot air will accumulate in the upper part of the room, and supercooled fumes will hit the human body, which is more harmful to health than heating. will also have an even more negative impact. (2) In the case of ceiling-mounted type, the target room R has a plan view as shown in Figure 28.
Figure 29 A, B and B show the results of measuring the indoor temperature distribution at each cross section of A-A, B-B, and C-C with a ceiling-mounted air conditioner C placed in a horizontal air outlet state.
In this case, the indoor air suction port and the fumarole blowout port are both near the ceiling, so the high-temperature air in the upper layer is cooled by heat exchange, and the cool air blown out is caused by the draft effect. Because the temperature naturally falls, the ideal indoor temperature difference is about 1°C no matter where you are. However,
In order to promote cooling efficiency in the residential zone, it is desirable that the blowing direction of the fumes be directed downwards.In this case, the fumes (cold air) will be directly hit, which will reduce the temperature difference and the cooling efficiency in the residential zone. There is a trade-off issue in this respect. As mentioned above, in the case of air conditioning, it is possible to improve the indoor temperature distribution by directing the fumes horizontally or upwards and cooling from the upper layer, but due to health concerns, rapid cooling in the residential zone and improvement of cooling efficiency have been attempted. It was difficult. To summarize the above-mentioned problems when heating and cooling using conventional air conditioners operating independently, the following are: (a) The difference in temperature between the top and bottom of the room is too large, especially when heating. (b) Superheated fumes or supercooled fumes are likely to directly hit the human body, causing discomfort and potentially damaging health. (c) The fumes rub against the human body at a considerable wind speed, further increasing discomfort and adverse effects on health. <Means for Solving the Problems> In view of the above-mentioned circumstances, the blower type air conditioner/heater according to the present invention, which was developed as a result of intensive research, includes a port 12 that sucks indoor air, and a port 12 that cools or heats the sucked air. A heat exchanger 14, an air conditioner main body 11 equipped with an opening 13 for blowing heat-exchanged cool air or warm air into the room, and an indoor air conditioner in an upper region of the air conditioner main body 11 than the cold air blowing area from the port 13 during cooling. air, or the opening 1 in the air conditioner main body 11 during heating.
Ports 1B and 1A that suck indoor air in a lower layer area than the indoor air suction area to 2 in a state where it flows along a horizontal plane or a substantially horizontal plane, and a fan 4, both of which can be selectively opened and closed. The shutter 6 blows out the air outlet 5 so as to mix the indoor air selectively sucked in from the ports 1B and 1A with cold or warm air blown out from the port 13 of the air conditioner main body 11 without cooling or heating the indoor air. A distinctive feature of this configuration is that the auxiliary air blowing box 2 for air conditioning and heating provided therein is constructed separately. <Function> According to the air conditioner/heater of the present invention having the characteristic configuration described above, during cooling, indoor air is sucked through the air conditioner/heater main body 11 and cold or warm air generated by the heat exchanger 14 is introduced into the room. On the other hand, through the auxiliary air blowing box 2, the hot indoor air that is stagnant in the upper layer of the fume blowing area is actively sucked along a horizontal plane or a nearly horizontal plane, and the suction airflow is By blowing out to mix with the fumarole, it is possible to prevent the fume from becoming supercooled over time, and it also allows the hot air in the upper layer of the room to flow without stagnation, reducing the temperature difference between the top and bottom of the room. The result is a small amount. During heating, the auxiliary air blower box 2 actively moves the cold air that has accumulated below the indoor air suction area sucked through the air conditioner main body 11 to generate the fumes by the auxiliary air blow box 2. By sucking in the direction and mixing the suction airflow with the fumarole, overheating of the fumarole over time is avoided, and the cold air in the lower layer of the room near the floor is circulated and heated by mixing with the fumarole, The temperature difference between the top and bottom of the room is reduced. In either case of cooling or heating, the air conditioner main body 11
The blowout port of the fume from the building is always set at a higher position than the residential zone, and the blowout direction is set horizontally or upwards, so that the effect described above can be obtained, so direct hit by the fume can be avoided. can. <Effects of the Invention> As is clear from the detailed description above, the present invention has the following advantages: (1) Overall indoor air is Moreover, by dividing the air into the upper and lower parts, it is possible to rationally circulate and flow the air, so that the temperature difference between the upper and lower parts of the room is extremely small.In other words, it is possible to perform comfortable heating and cooling with an even temperature throughout the room, especially in offices. This is effective when there are many obstacles in the room. (2) During heating, localized high temperature areas do not occur in the residential zone, and there is no discomfort caused by supercooled fumes or superheated fumes directly hitting the human body, which is extremely effective in terms of health management. (3) Comfortable heating and cooling as described above can be achieved by using the existing air conditioner unit 11 as is and adding only the auxiliary ventilation box 2, so the economic burden on the consumer is small. It has a great dissemination effect. (4) In relation to (3) above, it can be used in combination with existing cooling-only equipment and heating-only equipment as appropriate. This resulted in remarkable effects. <Example> Hereinafter, an example of the present invention will be described in detail based on the drawings. In Fig. 1, reference numeral 1 denotes a floor-standing air conditioner/heater body, which has a suction port 12 for indoor air at the front at a mid-height position in the vertical direction, and a blowout port 13 for cold or warm air at the upper end. , and the opening 12
It has a built-in heat exchanger 14 and a fan (not shown) that cool or heat indoor air sucked from the room. Reference numeral 2 denotes an auxiliary ventilation box for air conditioning and heating, which is a rectangular vertically elongated hollow box body that is taller than the air conditioner main body 11 and can be installed independently on the floor separately from the air conditioner main body 11. 1. On the upper surface and side surface of the upper end of the air conditioner body 11, there are two types of large and small air filters capable of sucking indoor air in an upper layer area than the cold air blowing area from the jet air outlet 13 in the air conditioner main body 11 in a state where it flows along a horizontal plane or a substantially horizontal plane. Mouth 1B,1
B' is provided on the front and side surfaces of the lower end of the hollow box main body 1, and the indoor air in the lower layer area than the indoor air suction area to the indoor air suction port 12 in the air conditioner main body 11 is provided on a horizontal surface or on the side surface. There are two types of ports 1A and 1A', large and small, that are capable of sucking water while the fluid is flowing along a substantially horizontal plane. A vent 5 is provided to blow out the indoor air sucked from the air conditioner 1 from a position directly above the vent 13 of the air conditioner/heater main body 11 into the room without cooling or heating the indoor air. 4 is built-in, and each of the upper and lower suction ports 1B, 1B',
1A and 1A' are provided with two types of insertion frames 7B and 7, one large and one small, with one side open, as shown in FIG. 2, respectively.
B', 7A, 7A' are fixed to each other, and these can be freely replaced.There are two types of shutters 6, large and small, as shown in FIG.
The openings 1B, 1B', 1A, and 1A' can be selectively opened and closed by replacing the shutters 6 and 6'. Reference numeral 8 in FIG. 1 is a start switch for the fan 4, and also the air outlet 5 of the auxiliary air blower box 2 and the air conditioner main body 1.
Airflow direction changing blades are attached to the suction port 12 and the blowout port 13 in the air conditioner 1, respectively, but since these are well known, a detailed explanation thereof will be omitted. During heating, the upper suction ports 1B and 1B' of the hollow box body 1 in the auxiliary ventilation box 2 are closed via the shutters 6 and 6', and the lower suction ports 1A and 1A' are opened to turn on the fan 4. By operating in synchronization with the operation of the air conditioner/heater main body 11, the air conditioner/heater 1 is activated as shown by the solid line in FIG.
Indoor air in a lower layer area than the suction area of indoor air according to No. 1 is sucked along a horizontal plane or a substantially horizontal plane, and is blown out into the room from the outlet 5 in the horizontal direction without heating it. Also, during cooling, the lower suction ports 1A and 1 of the hollow box body 1 are replaced based on the replacement of the shutters 6 and 6'.
A' is closed, the upper suction ports 1B and 1B' are opened, and the fan 4 is operated in synchronization with the operation of the air conditioner 11, so that the fume blowing area from the air conditioner 11 is as shown by the solid line in FIG. Indoor air in an upper layer region is sucked along a horizontal plane or a substantially horizontal plane, and is blown into the room from the outlet 5 in a horizontal direction. In either case of heating or cooling, the air blowing direction of the air conditioner 11 is set slightly upward with respect to the horizontal plane as shown in FIG. Indoor suction air blown out from the outlet 5 is mixed with cooling and heating fumes, and this mixture is made to flow into the room as shown in Figure 4 A and B, thereby circulating the entire indoor air upward and downward. This allows heating or cooling to be performed with little temperature difference. Next, a box 2 having the same function as the auxiliary ventilation box shown in the above embodiment is installed as shown in FIGS.
As shown in the figure, the results of an experiment (heating experiment) actually conducted by the present inventors with the device attached to the air conditioner main body 11 will be explained. (1) Experimental method a Experimental room with a planar configuration as shown in Figure 8, length x width x
Height: approx. 10.5 x 10.5 x 2.9 m (floor area: 110.25 m)
^m2 , volume ^319.7m3 ), and the room is equipped with an office desk d, counter c, cabinet k, reception set s, chairs ch, etc. as shown in the diagram, and points A to G are arranged in the actual working conditions. Room temperature was measured. b Position of air conditioner 11 Total input: 8.1/10KW Compressor: 5.5KW Blower: 2 Shirotskov fans Air volume: 62/70m3/ ^min Height: 1885, Depth: 505, Opening: 1300 Height of suction port 12 : 800 Outlet height: 1800 (mm) c Temperature recording procedure Recorder used: Digital temperature recorder 3874 model manufactured by Yokogawa Electric Corporation

【table】

[Table] d Wind speed measurement Wind speed and wind direction at points 00 to 21 in Table 1 above (2) Experimental results a Room temperature changes at measurement points A to G are shown in Figure 9.
As shown in Fig. 15, the temperature changes of the outside air, air conditioning unit 11, and the air outlet and suction port of the auxiliary fan box 2 are as shown in Fig. 16. Based on these results, ○A Air conditioning unit 11 suction port The temperature of the outlet 12 has decreased by about 10°C since the start of the combined operation, and the temperature of the outlet 13 has fluctuated up and down since the combined operation, but has increased slightly overall. ○B Upper and middle parts of points A to E, excluding points F and G,
After the temperature became combined operation, it was about 2-4℃.
While the temperature decreases, the temperature in the lower part increases by 3 to 9 degrees Celsius, and at points F and G near the air conditioner 11, the temperature in the middle changes slowly and the temperature in the lower part increases by 4 degrees Celsius.
A, C, and D are far away from the air conditioner 11.
There was a significant decrease in the upper temperature and an increase in the lower temperature at each point. b The cross-sectional temperature distribution at measuring point C-D when the air conditioner is operated alone and when the auxiliary fan box is operated together is shown in Figure 17 A and B, and the cross-sectional temperature distribution at measuring point B-F-G-E is shown in Figure 17. As shown in Figure 18 A and B, from this result ○B During combined operation, the room temperature near the floor is 20℃ or higher over almost the entire frontage, and the temperature is about 5 to 10℃ compared to when operating alone. The temperature has risen, and the temperature near the ceiling has dropped by about 5 degrees Celsius. c The airflow conditions at 1.5 m above the floor and 2.5 m above the floor when the air conditioner is operated alone are as shown in Figures 19A and 20A, whereas the above-mentioned height positions above the floor when the auxiliary fan box 2 is operated together The airflow conditions are as shown in Figures 19B and 20B, and from this result, ○B The wind speed during combined operation is on average about twice that during independent operation, and a large amount of indoor air is circulated. are doing. ○B On the left side of the air conditioner/heater installation area, there is a large movement of counterclockwise airflow, and on the right side, the air that spewed out toward the ceiling is flowing back along the floor at high speed, and the cold air in the lower layer is sucked into the lower part of auxiliary box 2. It is well sucked into mouth 1A. ○C The wind speed near the ceiling was fast, but it was relatively slow at the height range where it hit the human body, so there was almost no effect from the direct hit of the fumes. From the experimental results shown in a to c above, the unique effects of the air conditioner/heater of the present invention, such as being able to create an extremely comfortable heated space with little difference in temperature between the upper and lower parts of the room, have been fully demonstrated. In the case of air conditioning, a circulation system is used in which hot indoor air near the ceiling is sucked in and mixed with fumes.Although the details of the experimental results are omitted, it is possible to effectively control the indoor temperature in much the same way as heating. It is clear that it can be averaged to

[Brief explanation of drawings]

1 to 3 show one embodiment of the present invention, in which FIG. 1 is a schematic perspective view, FIGS. 2 and 3 are enlarged perspective views of important parts, and FIGS. A schematic side view showing the air flow during cooling; Figures 5 to 7 are a front view, left side view, and right side view of the equipment configuration used in the experiment; Figure 8 is a plan view of the experimental room; Figures 15 to 15 are graphs showing temperature changes at various points indoors, Figure 16 is a graph showing temperature changes in outside air and each part of the air conditioner, Figure 17 A, B and Figure 18 A,
Figures 19A and 20A and 20B are airflow state diagrams, Figures 21 to 23 are temperature distribution diagrams of conventional floor heaters, and Figure 24. and Fig. 25 is a temperature distribution diagram of a ceiling-mounted heater, Fig. 26 is an airflow distribution diagram of the same as above, and Fig. 27 is a temperature distribution diagram of a ceiling-mounted heater.
Figures A and B are temperature distribution diagrams with a conventional floor-mounted air conditioner, Figure 28 is a plan view of a room to be cooled by a ceiling-mounted air conditioner, and Figures 29 A, B, and C are temperature distributions in each cross section of the same. It is a diagram. 1A, 1B... Indoor air suction port, 2... Air conditioning auxiliary box, 4... Fan, 5... Outlet, 6... Shutter, 11... Air conditioner body, 12... Indoor air suction port, 13... Fumarole outlet.

Claims (1)

[Claims] 1 An air conditioner/heater body 11 equipped with a port 12 for sucking indoor air, a heat exchanger 14 for cooling or heating the drawn air, and a port 13 for blowing out heat-exchanged cold or warm air into the room; Indoor air in the upper layer area than the cold air blowing area from the opening 13 in the machine body 11, and during heating, the air conditioner body 11
The ports 1B and 1A, the fan 4, which suck indoor air in a lower layer area than the indoor air suction area to the port 12 in a state where it flows along a horizontal plane or a substantially horizontal plane; Without cooling or heating the indoor air selectively sucked in from the shutter 6, which can be opened and closed, and the ports 1B and 1A,
An air blowing type characterized in that an auxiliary air blower box 2 for air conditioning and heating equipped with an outlet 5 for blowing out so as to mix cold air or warm air blown out from the opening 13 of the air conditioner main body 11 is configured separately. Air conditioner.