KR19980033402A - Operation Method of Air Conditioning System and Air Conditioning Device - Google Patents

Abstract

The present invention relates to a method of operating an air conditioning system and an air conditioner having an indoor unit which is used in the vicinity of a floor and having a spout port up and down, and is ideal without losing the characteristics of the indoor unit of a single suction or two jet method. The present invention provides a method of operating an air conditioning system and an air conditioner that can contribute to the realization of a temperature environment, and includes an inlet port 4, an upper blower outlet 6, a lower blower outlet 11, an upper heat exchanger 17, and an upper fan 15. ) And an air conditioner including a lower heat exchanger 18 and a lower fan 16 and an indoor unit disposed and used near the bottom surface, wherein the heat exchanger 17 and the lower heat exchanger 18 are supported. It is connected in series through the installation mechanism 19, and during the cooling operation, the refrigerant flows in the path passing from the upper heat exchanger 17 to the lower heat exchanger 18, and in the heating operation, the refrigerant flows in the reverse path. At least air conditioning During the exhibition and heating operation, either the sub-tightening mechanism 19 and the casting fixture 26 for ejecting air at a temperature lower than the temperature of the air ejected from the lower spout 11 from the upper spout 6 are controlled. It is characterized in that it comprises a control means (32).

Description

Operation Method of Air Conditioning System and Air Conditioning Device

The present invention relates to a method and an air conditioner for operating an air conditioning system having an indoor unit which is used to be disposed near the bottom surface with a blower port up and down.

As is well known, in the home air conditioner, the heat pump type that can combine heating and cooling continues to occupy the mainstream. In such an air conditioner, the indoor unit is often a so-called wall-hung type that is installed on a wall close to the ceiling due to a problem of installation space. The indoor unit of this type has a suction port for sucking indoor air at the front side, and the indoor air sucked at the suction port is contacted with the heat exchanger to blow out obliquely downward toward the front through a jet port formed at the bottom.

However, in the indoor unit having a structure in which the front suction and obliquely ejected downward in the wall-mounted system, there are the following problems. That is, in this type of indoor unit, since the air flows downward in the cooling operation, the entire room can be cooled uniformly and almost comfort can be satisfied. However, in the heating operation, the warmth hardly touches the floor. There was a problem that the bottom surface of the foot was hard to warm and lack of comfort during heating.

In addition, in order to improve the comfort during heating, the indoor unit is installed near the floor or near the floor, and the method of laying the warmth on the floor is considered. However, in this type of installation, the air is concentrated and supplied near the floor during the cooling operation. It is difficult to cool the whole room to a uniform temperature, and it is not only lack of the comfort during cooling, but also leads to the fall of efficiency.

Therefore, in order to solve the above-mentioned problems, an upper jet path for ejecting a part of the indoor air sucked through the suction port installed in the front from the upper jet port and a lower jet for jetting the rest of the indoor air sucked through the suction port from the lower jet port. BACKGROUND ART An air conditioner having an indoor unit which has a furnace and is disposed and used near the bottom surface has emerged.

In this one-suction and two-jet system, the indoor unit used in the vicinity of the floor can eject airflow toward the middle of the floor and the height of the room, so that the temperature of the entire room can be made almost even during heating as well as cooling. Can be.

However, from the viewpoint of comfort, it is not always necessary to make the temperature of the entire room almost uniform to satisfy comfort. In other words, the environment that is comfortable to people living in the room is when the haptic temperature received by each part is a temperature condition that allows each organ to move well. The conventional air conditioner equipped with an indoor unit disposed and used near the floor in a single suction and two blow-out system is devoted to making the temperature of the entire room almost uniform, which can be improved if the occupant truly wants comfort. There was room left.

As described above, the conventional air conditioner equipped with an indoor unit disposed and used near the floor in the one suction and two ejection methods has left room for improvement if the occupant truly wants comfort.

It is therefore an object of the present invention to provide an air conditioner operating method and an air conditioner capable of creating an ideal temperature environment for a citizen living in a room.

1 is a configuration diagram of an air conditioner according to an embodiment of the present invention;

2 is a view for explaining an installation form of an indoor unit in the same apparatus;

3 is a diagram showing a Moliere chart in the freezing operation of the same apparatus;

4 is a view for explaining the ejection form in the indoor unit during the freezing operation of the same apparatus;

5 is a diagram showing a Moliere chart at the time of heating operation of the same apparatus;

6 is a view for explaining the ejection form in the indoor unit during the freezing operation of the same apparatus;

7 is a view showing a Moliere chart in operation of dehumidifying moisture of the same device; and

FIG. 8 is a view for explaining the ejection pattern in the indoor unit during the warm air dehumidification operation of the same apparatus.

* Explanation of symbols for main parts of the drawings

1: indoor unit 4: inlet

6: top spout 7: top spout

11: lower spout 14: lower spout

15: Upper fan 16: Lower fan

17: upper heat exchanger 18: lower heat exchanger

19: tightening mechanism 21: room

22: wall 23: floor

26: casting machine 27: outdoor heat exchanger

28: four-way valve 29: compressor

32: controller

In order to achieve the above object, in the operating method according to claim 1, an inlet for inhaling indoor air, an upper ejection passage for ejecting a part of the indoor air sucked through the inlet from the upper ejection outlet, and disposed in the upper ejection passage A lower upper heat exchanger and an upper fan and a lower blower path for ejecting the rest of the indoor air sucked through the suction port from a lower blower, and a lower heat exchanger and a lower fan disposed in the lower blower, An air conditioning system provided with an indoor unit disposed to be used in the operation, wherein at least during cooling operation and heating operation, the upper and lower sides of the upper and lower air ejecting air at a temperature lower than the temperature of the air ejected from the lower spout Operation with temperature difference is carried out.

In order to achieve the above object, in the air conditioner according to claim 2, an air inlet for sucking indoor air, an upper air outlet path for ejecting a portion of the indoor air sucked through the air inlet from the upper air outlet, and the upper air outlet An upper heat exchanger and an upper fan disposed in the furnace, a lower ejection path for ejecting the remainder of the indoor air sucked through the inlet from the lower ejection port, and a lower heat exchanger and a lower fan disposed in the lower ejection path; An air conditioner comprising an indoor unit disposed and used near a bottom surface, the air conditioner comprising a series circuit and a casting apparatus for connecting the upper heat exchanger and the lower heat exchanger in series through a sub-tightening mechanism. At least the refrigeration cycle element group constituting the refrigeration cycle of the cooling operation and heating operation, and at the time of cooling operation Refrigerant flows from the upper heat exchanger to the path passing through the lower heat exchanger, and during the heating operation, the refrigerant flow direction switching means for flowing the refrigerant from the lower heat exchanger to the path passing through the upper heat exchanger and at least cooling operation and heating operation. And an upper and lower temperature difference forming means for controlling one of the sub-tightening mechanism and the casting-stretching mechanism in order to blow air at a temperature lower than the temperature of the air jetted from the lower jetting port at the upper jetting port.

In the air conditioner according to claim 2, the upper and lower temperature difference forming means is configured to adjust the amount of tightening of the casting impingement mechanism such that the difference between the upstream temperature and the downstream temperature of the upper heat exchanger becomes a predetermined value during the cooling operation. It may be adjusted to form a temperature difference.

The upper and lower temperature difference forming means may form a temperature difference by adjusting the tightening amount of the sub-tightening mechanism during heating operation.

Further, at least in a cooling operation, a control system for controlling the lower fan may be further provided so that shaking occurs in the air stream ejected from the lower spray path.

In the operating method according to claim 1 and the apparatus according to claim 2, at least in the cooling operation and during the heating operation, an operation having an upper and lower temperature difference for ejecting air having a temperature lower than that of the air ejected from the lower ejection outlet is ejected from the upper ejection outlet. This makes it possible to create a temperature environment where the so-called head is cold and the feet are warm and contributes to the improvement of comfort.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described, referring drawings.

1 is a configuration diagram including a refrigeration cycle of an air conditioner according to an embodiment of the present invention.

In this figure, 1 represents an indoor unit. This indoor unit 1 is provided with the photosensitive body 2 formed long and thin in the direction orthogonal to the ground in cross-sectional shape, for example.

In the front wall of the photoreceptor 2, a suction port 4 for suctioning the indoor air as shown by the large arrow 3 in the figure is formed. On the front wall located on the upper side with the inlet 4 as a boundary, a part of the indoor air sucked through the inlet 4 is ejected obliquely upward toward the front as indicated by the large arrow 5 in the figure. ) Is formed. The upper spout 6 communicates with the inlet 4 through an upper spout path 9 formed of a fan nose 7 and a rear casing 8. In addition, the lower wall outlet port ejects obliquely downward toward the front, as indicated by the large arrow 10 in the drawing, of the rest of the indoor air sucked through the inlet port 4 on the front wall located thereafter with the inlet port 4 as a boundary. (11) is formed. The lower spout 11 communicates with the inlet 4 through the lower spout 14 formed of the fan nose 12 and the rear casing 13.

In the jetting path 9 and the lower jetting path 14, a cross flow type for imparting suction power in the direction indicated by the large arrow 3 in the figure and jetting power in the direction indicated by the large arrow 5 and 10 in the figure. An upper fan 15 and a lower fan 16 are disposed, and an upper heat exchanger 17 and a lower heat exchanger 18 are disposed between the upper fan 15 and the lower fan 16 and the suction port 4. It is arranged. In the upper heat exchanger 17 and the lower heat exchanger 18, a finned refrigerant tube is formed in an oblique direction in a direction perpendicular to the ground. An electrically controlled or electronically controlled sub-tightening mechanism 19 is provided between the lower portion of the refrigerant pipe constituting the upper heat exchanger 17 and the upper portion of the refrigerant pipe constituting the lower heat exchanger 18. have. That is, the heat exchanger 17 and the lower heat exchanger 18 form a series circuit connected in series via the sub-tightening mechanism 19.

As shown in FIG. 2, the indoor unit 1 configured as described above is provided on the inner surface of the wall 22 dividing the room 21 at intervals of several tens of centimeters between the floor surface 23.

The upper end of the refrigerant pipe constituting the upper heat exchanger 17 includes a pipe 25, an electric or electronically controlled casting fixture 26, an outdoor heat exchanger 27, and an electric four-way valve 28. It is connected to the inlet port of the compressor 29 through the channel. The discharge port of the compressor 29 is connected to the lower end of the refrigerant constituting the lower heat exchanger 18 through the upper valve 28 and the pipe 30. That is, they comprise a refrigeration cycle with the upper heat exchanger 17 and the lower heat exchanger 18 connected in series via the sub-tightening mechanism 19. As shown in FIG. In addition, a fan 31 is attached to the outdoor heat exchanger 27.

Operation stop control of the compressor 29, switching control of the four-way valve 28, operation stop control of the upper fan 15 and the lower fan 16, control of the tightening amount of the sub-tightening mechanism 19, casting clamping mechanism The tightening amount control of (26) and the operation stop control of the fan 31 are implemented based on the command from the control apparatus 32. As shown in FIG.

That is, the control device 32 is the room temperature (T ₀ ) detected by the temperature sensor arranged in each element, the evaporation temperature (T ₁ ) in the upper end of the refrigerant pipe constituting the upper heat exchanger (17) of the indoor unit (1). E) evaporation temperature T ₂ at the lower end of the refrigerant pipe constituting the same upper heat exchanger 17, and evaporation temperature T at the middle of the refrigerant pipe constituting the lower heat exchanger 18 of the indoor unit 1. ₃ ), the suction gas temperature T ₄ of the compressor 29, the discharge gas temperature T ₅ of the compressor 29, the temperature inside the refrigerant pipe T ₆ of the outdoor heat exchanger 27, and the outdoor temperature T ₇ ), The above-mentioned refrigeration cycle is constructed in accordance with the cooling operation command (S ₁ ), heating operation command (S ₂ ), and warm air dehumidification operation command (S ₃ ), and the elements are described later. It is configured to control. In addition, control of the room temperature T ₀ is performed by the ON (OFF) control of the compressor 29 or the rotation speed control of the compressor 29.

Next, an operation state of the air conditioner configured as described above, and eventually the air conditioner, will be described.

(Cooling operation)

When the cooling operation command S ₁ is given, the control device 32 is connected in a reverse manner to that shown in the four-way valve 28, that is, the discharge gas of the compressor 29 moves from the four-way valve 28 to the outdoor heat exchanger ( 27) to the upper heat exchanger 17 to the main tightening mechanism 26 to the indoor unit 1 to the lower heat exchanger 18 to the four-way valve 28 to the compressor 29 of the auxiliary tightening mechanism 19 to the indoor unit 1. Switch to the inlet path.

Next, all the sub-tightening mechanisms 19 are opened and controlled, the upper fan 15 and the lower fan 16 are rotated at a predetermined rotation speed, and the compressor 29 is rotated, and the fan 31 is rotated at the same time.

The high-temperature, high-pressure refrigerant gas discharged from the compressor 29 passes through the four-way valve 28, heat exchanges with outdoor air in the outdoor heat exchanger 27, condenses, and is then tightened in the casting apparatus 26 and low pressure. Gas and a liquid two-phase state. Thereafter, the upper heat exchanger (17) of the indoor unit (1) exchanges heat with the room air, evaporates, becomes a gas of low temperature and low pressure, passes through the lower heat exchanger (18), and is compressed again by the compressor (29). Becomes a gas.

At this time, the controller 32 has a predetermined difference between the evaporation temperature T _{1 in} the upper end of the refrigerant pipe constituting the upper heat exchanger 17 of the indoor unit 1 and the evaporation temperature T _{2 in the} lower end. Adjust the tightening amount of the casting fixture 26 so as to. That is, the amount of tightening of the casting fixture 26 is adjusted so that the upper heat exchanger 17 becomes the superheated region in the upper heat exchanger 17 so that the lower heat exchanger 18 becomes the superheated region so that it becomes a Moliere chart as shown in FIG.

In this driving mode, since the fan 15 and the lower fan 16 are in the operating state, respectively, as shown in FIG. 4, in the upper blower outlet 6, cold air A according to the evaporation temperature is further lowered. In (11), air B at a temperature close to room temperature is blown off. Then, when a certain time elapses, the control device 32 performs control to irregularly increase or decrease the rotation speed of the lower fan 16 so as to cause shaking in the air flow ejected from the lower blower passage 11.

In this cooling operation mode, for example, the air temperature sucked from the inlet 4 is 27 ° C, the air temperature blown out from the lower spout 11 is 25 ° C, and the air temperature spouted from the upper spout 6 is 15 ° C. In other words, depending on the occupants, the cold air is upward and the warm air close to the room temperature is downward, so that the feet can be prevented from being too cold, and the head can be cold and the feet can be warmed, improving comfort. do.

In addition, since the blowing wind at the lower blower outlet 11 along the irregular shaking is close to the wind of the fan, it causes the effect of combined use of the fan, and the set temperature at the time of cooling compared with the general upper blowing type indoor unit disposed near the floor surface. It is possible to raise the average temperature of the living space can be changed from 27 ° C to 28 ° C, for example, a great effect on energy saving can be expected.

(Heating operation)

When the heating operation command S ₂ is given, the control device 32 connects the four-way valve 28 to the connection form shown in the drawing, that is, the discharge gas of the compressor 29 is lower than the four-way valves 28 to 1 of the room 1. The upper heat exchanger 17 to the main clamping mechanism 26 to the outdoor heat exchanger 27 to the four-way valve 28 to the compressor 29 of the heat exchanger 18 to the subtightening mechanism 19 to the indoor unit 1. Switch to flow through the inlet.

Next, the sub-tightening mechanism 19 and the casting-tightening mechanism 26 are controlled to a predetermined tightening amount, the upper fan 15 and the lower fan 16 are rotated at a predetermined rotational speed, and the compressor 29 is rotated. At the same time, the fan 31 is rotated.

After the high-temperature, high-pressure refrigerant gas discharged from the compressor 29 passes through the four-way valve 28, and is condensed by heat exchange with the indoor air in the lower exchanger 18, and controlled by the sub-tightening mechanism 19, the condensation temperature Heat exchange with the room air in the lower heat exchanger (17). The refrigerant is tightened in the casting impingement 26 and becomes a low-pressure gas, a liquid two-phase state, which is then evaporated by exchanging heat with outdoor air in the outdoor heat exchanger 27 to become a low-temperature, low-pressure gas, and the compressor 29 Is sucked into the high temperature and high pressure gas.

At this time, the controller 32 constitutes the evaporation temperature T _{1 in} the upper end of the refrigerant constituting the upper heat exchanger 17 of the indoor unit 1 and the lower heat exchanger 18 of the indoor unit 1. The amount of tightening of the sub-tightening mechanism 19 is adjusted so that the difference from the evaporation temperature T ₃ in the middle of the refrigerant pipe is a predetermined value. That is, the lower heat exchanger 18 has a first condensation region, and the upper heat exchanger 17 has a second condensation region having a lower temperature than that of the first condensation region in order to realize a two-condensation temperature such that the Moliere chart as shown in FIG. The control adjustment of the sub-tightening mechanism 19 is performed as much as possible.

In such a heating operation mode, for example, as shown in Fig. 6, the ejection temperature at the upper ejection opening 6 can be ejected by setting the ejection temperature at 30 캜 and the ejection temperature at the lower ejection outlet 11 at 40 캜. This so-called Duhan fever environment where the warm head is cold can be realized, and the comfort during heating can be improved. In addition, since the upper warm egg warming effect can be pressed down, the heating temperature can be lowered, and the average temperature of the living space can be changed from, for example, 24 ° C. to 23 ° C., thereby greatly saving energy. Can be obtained.

(Dehumidification dehumidification driving)

When the warm air dehumidification operation command S ₃ is given, the control device 32 connects the four-way valve 28 to the connection form shown in the drawing, that is, the discharge gas of the compressor 29 is the four-way valve 28 to the indoor unit 1. Lower heat exchanger 18 to subtightening mechanism 19 to indoor unit 1 upper heat exchanger 17 to main tightening mechanism 26 to outdoor heat exchanger 27 to four-way valve 28 to compressor 29 Switch to the inlet path.

Next, all the casting apparatuses 26 are opened and controlled, and the upper fan 15 and the lower fan 16 are rotated at a predetermined rotational speed, and the compressor 29 is rotated. In this case, the fan 31 is not rotated.

After the high-temperature, high-pressure refrigerant gas discharged from the compressor 29 passes through the four-way valve 28, is condensed by heat exchange with the room air in the lower exchanger 18, and then tightened in the sub-tightening mechanism 19, the low-pressure gas, It becomes a liquid two-phase state. The refrigerant exchanges heat with the indoor air in the upper heat exchanger 17 to evaporate to become a gas of low temperature and low pressure. After passing through the outdoor heat exchanger 27, the refrigerant is compressed again by the compressor 29 to become a gas of high temperature and high pressure. .

At this time, the controller 32 has a difference between the evaporation temperature T _{1 in} the upper end of the refrigerant pipe constituting the upper heat exchanger 17 of the indoor unit 1 and the suction gas temperature T ₄ of the compressor 29. The tightening amount of the sub-tightening mechanism 19 is adjusted to a predetermined value. That is, the amount of tightening of the sub-tightening mechanism 19 is adjusted so that the lower heat exchanger 18 may be a condenser and the upper heat exchanger 17 may be an evaporator so that it becomes a Moliere chart as shown in FIG.

In this driving state, for example, as shown in FIG. 8, since the cold air is discharged from the upper spout 6 and the warm air is discharged from the lower spout 11 into the room, a so-called two-foot heat environment can be realized where the feet are warm and the head is cold. It is possible to improve the comfort during the dehumidification operation. In addition, since it is the warm-up moisture removal operation by a heating cycle, it is possible to raise the temperature of the room while removing moisture when the outside temperature is low and humid.

According to the present invention as described above, it is possible to contribute to the realization of a more comfortable indoor temperature environment without losing the characteristics of the air conditioning system having an indoor unit which is disposed and used in the vicinity of the floor surface by one suction and two jet methods.

Claims (5)

An inlet for sucking indoor air, an upper blower path for ejecting a part of the indoor air sucked through the inlet from the upper blower outlet, an upper heat exchanger and an upper fan disposed in the upper blower blower, and suctioned through the suction inlet An air conditioning system comprising a lower blower path for ejecting the remaining of the indoor air from a lower blower outlet, and an indoor unit disposed near the bottom surface, including a lower heat exchanger and a lower fan disposed in the lower blower furnace; In driving And at least one of a temperature difference between the upper and lower air outlets in which the air having a temperature lower than the temperature of the air ejected from the lower ejection outlet is ejected from at least the cooling operation and the heating operation. An inlet for sucking indoor air, an upper blower path for ejecting a portion of the indoor air sucked through the inlet from an upper blower outlet, an upper heat exchanger and an upper fan located in the upper blower blower, and suctioned through the suction inlet An air conditioner comprising: a lower blower path for ejecting the remaining indoor air from a lower blower outlet; and an indoor unit including a lower heat exchanger and a lower fan disposed in the lower blower furnace, and disposed near a floor. , A series circuit connecting the upper heat exchanger and the lower heat exchanger in series through a sub-tightening mechanism; A refrigeration cycle element group including a casting impingement mechanism and constituting a refrigeration cycle of at least a cooling operation and a heating operation in the series circuit, Refrigerant flow direction switching means for allowing the refrigerant to flow in the path passing from the upper heat exchanger to the lower heat exchanger during the cooling operation, and the refrigerant flows from the lower heat exchanger to the path passing through the upper heat exchanger in the cooling operation; At least in the cooling operation and in the heating operation, an upper and lower temperature difference forming means for controlling one of the casting and auxiliary tightening mechanisms for ejecting air at a temperature lower than the temperature of the air ejected from the lower ejection outlet at the upper ejection outlet; Air conditioning device characterized in that provided. The method of claim 2, The upper and lower temperature difference forming means adjusts the amount of tightening of the casting apparatus and forms a temperature difference so that a difference between the upstream temperature and the downstream temperature of the upper heat exchanger becomes a predetermined value during the cooling operation. Device. The method of claim 2 or 3, And said upper and lower temperature difference forming means forms a temperature difference by adjusting a tightening amount of said sub-tightening mechanism during heating operation. The method of claim 2, And a control system for controlling the lower fan such that shaking occurs in the air flow ejected from the lower ejection path at least during the cooling operation.