JP3945301B2 - Air conditioning system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air-conditioning system that adds a cooling function to a hot-air heater that performs heating by blowing hot air and performs heating and cooling of a general house or office.
[0002]
[Prior art]
Conventionally, various heating devices have been used in ordinary houses and offices. Among them, a heating device of a type that blows hot air using hot water as a heat source has high capacity and blows out hot air of high temperature. Because it is possible to obtain sufficient capacity and a feeling of heating even in cold and semi-cold areas, the installation space in the room is relatively small, and it is safe and clean, so its use has spread even in general areas Yes.
[0003]
Such a warm air heater is generally known as shown in FIG. The configuration will be described below with reference to FIG. As shown in the figure, an outdoor unit 4 composed of a cistern 1, a boiler 2, and a pump 3 is connected to an indoor unit 7 composed of a heat exchanger 5 disposed above and a blower 6 disposed below, and a connecting pipe. 8 is connected. A suction port 9 is provided at the upper part of the indoor unit 7, and a blower outlet 10 is provided at the lower part. Reference numeral 11 denotes a room temperature detecting means.
[0004]
Explaining the operation of this hot air heater, when the boiler 2 of the outdoor unit 4 operates and the temperature of the hot water sent to the indoor unit 7 by the pump 3 exceeds a predetermined temperature, the blower 6 starts operation. The indoor air is sucked from a suction port 9 provided in the upper part of the indoor unit 7 installed on the floor, heated by heat exchange with the hot water in the heat exchanger 5 and provided as a hot air in the lower part. The air is blown out from the outlet 10. When the suction temperature detected by the room temperature detection means 11 becomes equal to or higher than the set temperature, the blower 6 is stopped, and when it is lowered, the blower 6 is restarted to control the room temperature. Furthermore, in order to control capacity, reduce noise, and prevent airflow, the suction temperature is set such as strong wind, weak wind, and breeze according to the difference between the suction temperature detected by the room temperature detection means 11 and the set temperature. The air volume is reduced as the temperature approaches.
[0005]
In addition, a heat pump type heating / cooling device using Freon (for example, R-22) or the like as a heat medium without using hot water is generally used. In this type of air conditioner, an indoor unit is installed on the wall surface or ceiling so that the temperature distribution during cooling is improved and the feet are not cooled down, and the cool air is blown out from the height of the wall surface or near the ceiling. Mainstream. An example of switching the up-and-down blowing of the wall-mounted air conditioner is described in Japanese Patent Publication No. 61-38777. In this air conditioner, as shown in FIGS. 7a and 7b, a suction port 9 is formed on the front surface of the indoor unit 7, and further, a lower air outlet 10A and an upper air outlet 10B are formed on the lower and upper parts of the front surface, respectively. . And the heat exchanger 5 is provided in the position facing the said suction inlet 9, Furthermore, the air blower 6 is provided corresponding to this heat exchanger 5. FIG. The lower damper 12A and the upper damper 12B provided corresponding to the lower outlet 10A and the upper outlet 10B are switched by a damper motor 13 serving as outlet switching means.
[0006]
The operation of the air conditioner will be described. When the room temperature is equal to or lower than the set temperature during heating, the damper motor 13 operates to open the lower outlet 10A with the lower damper 12A as shown in FIG. At 12B, the upper air outlet 10B is closed, and hot air is blown out from the lower air outlet 10A. When the room temperature becomes equal to or higher than the set temperature, as shown in FIG. 7b, the damper motor 13 operates to close the lower outlet 10A with the lower damper 12A and open the upper outlet 10B with the upper damper 12B. Blowing air is blown out from the upper outlet 10B to convect the warm air. During the cooling operation, when the room temperature is relatively high, cool air is blown out from the lower outlet 10A to rapidly cool, and when the room temperature is in a stable state based on the set value, the indoor blower 6 is accompanied by a light wind operation. Then, the air blowing state is set, and cold air is blown out from the upper blowing port 10B so that the feet are not cooled.
[0007]
[Problems to be solved by the invention]
However, since the above-mentioned conventional hot air heating device is dedicated to heating, a separate cooling device is required to perform cooling, and the installation system in combination with cooling by a room air conditioner, etc. makes the installation very complicated. This is very disadvantageous in terms of cost. In addition, when the cooling water is circulated through the heat exchanger 5 so that the cooling can be performed, the condensed water adheres to and is generated on the heat exchanger 5, so that the condensed water cannot be treated with this configuration and the cooling operation is performed. I can't. In order to treat condensed water, indoor unit 7 is fixed to the wall surface, and when drainage pipes are installed to drain condensed water to the outside using a drop, the installation location is Not only is the height limited, but the cold air blown out from the blowout port 10 of the indoor unit 7 placed on the floor cools only the feet, and if it is installed at a high position on the wall surface, the hot hot air rises immediately after the blowout. My feet get cold. Therefore, in such a configuration, there is a problem that the degree of freedom in installation is lost and the feeling of heating and cooling is impaired.
[0008]
On the other hand, in the other conventional air conditioner using Freon R-22 shown in FIG. 7, since the operating pressure of the refrigerant circuit is limited, it is difficult to set the warm air temperature during heating to 70 ° C. or higher. Not only is it difficult to obtain a sufficient feeling of heating, but the air volume is reduced as the suction temperature of the room temperature approaches the set temperature, so the warm air from a relatively high position on the wall rises quickly, and the temperature distribution in the room It was bad and my feet were cold.
[0009]
FIG. 8 is a perspective view of the space of the room in which the indoor unit 7 is installed, and FIG. 9 shows the temperature distribution at the time of weak wind and light wind during heating operation on the A surface of FIG. FIG. 10 shows the distribution of the average of the temperature in the horizontal direction at each height on each of the surfaces B and C in FIG. In addition, a dashed-dotted line is the average temperature of the whole room. As can be seen from both figures, when the air volume becomes small, such as a weak wind or a breeze, the temperature of the warm air rises and rises quickly, and further, the warm air that has risen because the suction port 9 is above the blower port 10. Will not return to the floor, so it is warm near the hot air heater and near the ceiling, but the temperature in other areas is low. Therefore, there is a problem that the comfortable living space is narrow and the entire room cannot be used effectively.
[0010]
In order to solve this problem, if the air volume is increased, the blowing temperature is further lowered, airflow and cold winds are felt, and noise is increased, so that comfort is impaired. As described above, when the indoor unit installation position is fixed at the height of the wall surface as in the conventional air conditioner, there is a problem that it is difficult to achieve both comfort during heating operation and cooling operation.
[0011]
In addition, in the conventional air conditioner using Freon R-22 or the like, if only a plurality of indoor units are added, a so-called stagnation phenomenon in which a heat medium stays in the indoor unit that is not in operation occurs. As a result, the amount of heat medium circulated in the air changes greatly, resulting in performance degradation and failure. And the air conditioner called Multi, which can add indoor units, is equipped with a valve device to prevent sleep and control it according to the operating situation, etc., making the device complicated and very disadvantageous in terms of cost, etc. There was also a problem that it was not possible to easily add indoor units.
[0012]
An object of the present invention is to provide an air-conditioning system having an indoor unit that makes it possible to achieve both high-temperature wind-floor heating and summer-time cooling, and reliably treat condensed water even when the installation location is changed in addition to the wall surface. It is what.
[0013]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a heat exchanger that supplies a low-temperature heat medium and cools the room, a drain receiver that collects and collects condensed water condensed on the surface of the heat exchanger, and an interior of the drain receiver. An indoor unit having a drainage pump for discharging the condensed water to the outside and a flexible pipe for supplying a low-temperature heat medium to the indoor unit are provided.
[0014]
According to the said invention, the heating of the high temperature wind floor blowing from which sufficient heating feeling is obtained, and the cooling in summer can be implement | achieved by one indoor unit. In addition, it is not necessary to fix the installation location of the indoor unit on the wall surface in order to treat condensed water, so the installation location can be changed according to the operation of heating or cooling, increasing the degree of freedom of installation and installation. It is possible to provide an air-conditioning system having a space-compact indoor unit.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
In order to solve the above problems, the present invention has the following configuration. That is, as a first configuration, a heat exchanger that supplies a low-temperature heat medium and cools the room, a drain receiver that collects condensed water received on the surface of the heat exchanger, and condensed water in the drain receiver An indoor unit having a drainage pump for discharging to the outside and a flexible pipe for supplying a low-temperature heat medium to the indoor unit are provided.
[0016]
In addition, it is possible to achieve high-temperature wind-floor heating and sufficient summer cooling with a single indoor unit, and to fix the installation location of the indoor unit on the wall surface in order to treat condensed water. Therefore, the installation location can be changed according to the operation of heating or cooling, the degree of freedom of installation can be expanded, and the installation space can be made compact.
[0017]
The second configuration includes a heat exchanger that supplies cold water as a low-temperature heat medium and cools the interior of the room, a drain receiver that collects and collects condensed water on the surface of the heat exchanger, and dew condensation in the drain receiver. It has an indoor unit provided with the ejector which discharges water to the outdoors. And the structure which can discharge dew condensation water with a simple structure with comparatively cheap cost is realizable. In addition, it is possible to prevent a decrease in cold water due to evaporation.
[0018]
A third configuration includes an indoor unit that can be placed on the floor and includes an upper outlet, a lower outlet, and switching means for switching the upper and lower sides of the balloon. Then, high-temperature air is blown out along the floor surface during heating, and cold air is blown out toward the ceiling during cooling, so that it is possible to improve comfort in an indoor unit with a high degree of freedom of installation.
[0019]
As a fourth configuration, a heat medium outlet provided on the wall surface of the house having a dew condensation water discharge port and a heat medium supply port has an indoor unit that can be connected / removed with a pipe having heat insulation and flexibility. Is. Depending on the user's purpose, one indoor unit can be moved anywhere in a room with a heat medium outlet, and it can be used as a living room in the daytime or a bedroom in the nighttime. Can be realized at low cost. Moreover, since it can be removed and stored from the heat medium outlet when not required, convenience is improved even in an indoor installation space.
[0020]
The fifth configuration includes an indoor unit having a branch supply port for the heat medium. Further, it is possible to easily add indoor units.
[0021]
Further, as a sixth configuration, a heat pump circuit having a compressor, a condenser, a decompression means, and an evaporator, and water that is a heat medium supplied to an indoor unit having a cistern, a pump, and a boiler are used in the heat pump circuit. A water circuit that flows so as to be cooled by exchanging heat with the refrigerant, and the evaporator includes a plurality of refrigerant flow path plates having slit-shaped holes and a plurality of water supply flow path plates having slit-shaped holes And a laminated heat exchanger that is provided between the plurality of refrigerant flow path plates and the water supply flow path plate and that forms the refrigerant and water supply flow paths from the plurality of partition plates that form the partition walls of the refrigerant and the water supply. It is a thing. And since the pressure loss of a water circuit can be reduced, the flow rate of cold water can be increased, and an air conditioning system that can easily increase the cooling capacity of an indoor unit can be provided. Furthermore, a cold water supply function can be added in a compact manner without increasing the size of the hot water supply device.
[0022]
Further, the seventh configuration includes an indoor unit having an overflow drain provided in the systern, a heat exchanger, a drain receiver, and an ejector for discharging condensed water. And since it prevents the cold water from being reduced due to evaporation, it is possible to eliminate replenishment of circulating water, and even when there is a large amount of condensed water inflow, the water exceeding the predetermined amount is automatically drained, eliminating the need for maintenance. Become.
[0023]
【Example】
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0024]
Example 1
FIG. 1 is a configuration diagram of an air conditioning system showing an indoor unit in a top blowing state of Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional configuration diagram of the indoor unit in a bottom blowing state of the air conditioning system. In FIG. 1, a water circuit 27 configured by sequentially connecting a cistern 21, a pump 22, a bypass 23 having a boiler 23 and a solenoid valve 24 connected in parallel, and an evaporator 26, a compressor 28, and a condenser. 29, a decompression means 30, and a heat pump circuit 31 configured by sequentially connecting the evaporator 26, and the outdoor configured to exchange heat between the water flowing through the water circuit 27 and the refrigerant of the heat pump circuit 31 in the evaporator 26. The machine 32 is connected to an indoor unit 37 including a heat exchanger 35, a blower 36, and the like by a flexible connection pipe 34 having heat insulation properties through a water outlet 33 that is a heat medium outlet. It is removable. A lower blowing inlet 38 is provided above the back of the indoor unit 37, and an upper blowing inlet 39 is provided at the lower part of the rear. Further, a lower outlet 40 is provided below the front surface of the indoor unit 37. Reference numeral 41 denotes wind circuit switching means. The switching means 41 rotates the casing 42 of the blower 36 around the rotation shaft 43 of the blower 36 to switch between the upper blower and lower blower blower circuits. Further, the bypass wind circuit 44 provided on the upper side of the blower 36 and on the front side of the heat exchanger 35 is a blower passage that does not pass through the heat exchanger 35 when blown upward. Further, an upper blow-out port 45 that blows out air that has passed through the heat exchanger 35 and a bypass blow-out port 46 that blows out air that does not pass through the heat exchanger 35 are provided in the upper part of the indoor unit 37. Further, the wind direction changing means 47 drives the upper wind direction changing blade 48 and the bypass wind direction changing blade 49 provided in the upper blowing port 45 and the bypass blowing port 46, respectively. The shielding means 50 provided on the rear surface of the indoor unit 37 shields the lower blowing inlet 38 when blowing upward, and the shielding means 50 is, for example, a shielding plate 51 that moves up and down as shown in FIG. And shielding plate driving means 52 for driving the shielding plate 51. Further, a drainage pump 53 is provided in the indoor unit 37, and its suction side is connected to a drain receiver 54 provided in the lower part of the heat exchanger 35, while its discharge side is integrated with the flexible connection pipe 34. The drainage channel 55 is connected to an outdoor drain hose 56.
[0025]
FIG. 3 is a perspective view showing an expanded state of indoor units of the air conditioning system according to the first embodiment of the present invention, and FIG. 4 is an exploded view of the evaporator 26 of the air conditioning system. In FIG. 3, reference numeral 57 denotes a branch portion of water, which is a heat medium, provided in the indoor unit 37, one of the branch portions 57 to the heat exchanger 35 and the other to a branch supply port 58 provided in the exterior portion. It is connected. The branch supply port 58 has substantially the same shape as the female side of the male / female water outlet 33, and is connected to the male outlet 60 of the floor panel 59, which is another indoor unit, so that water is added to the indoor unit 37. The floor panel 59 can be supplied in parallel.
[0026]
In FIG. 4, a stacked heat exchanger 61 configured as an evaporator 26 is formed by sequentially forming a refrigerant plate 62, a water supply plate 63, and a partition plate 64 inserted between the plates 62 and 63. The refrigerant plate 62 is formed with a slit slit 62a and a water supply slit 62b, which are slit-shaped holes. The refrigerant slit 62a is sandwiched between the partition plate 64 and the top plate or the partition plate 64 so as to define a coolant channel. Form. A coolant slit 63a and a water supply slit 63b, which are slit-shaped holes, are formed in the water supply plate 63, and the water supply slit 63b forms a water flow path by being sandwiched from the partition wall plate 64. The water supply slit 62b of the refrigerant plate 62, the refrigerant slit 64a and the water supply slit 64b of the partition plate 64, and the refrigerant slit 63a of the water supply plate 63 are holes provided to send refrigerant or water to each of the normal layers. is there. A top plate 65 is arranged on the uppermost surface of the normal layered plate, and an end plate 66 is arranged on the lowermost surface.
[0027]
Next, the operation and action will be described. As shown in FIG. 1, when heating operation is performed with the indoor unit 37 installed on the floor, heating is performed in a downward blowing state as shown in FIG. 2. That is, the switching means 41 rotates the casing 42 downward about the rotation shaft 43 of the blower 36, and the wind direction changing means 47 closes the upper outlet 45 with the upper wind direction changing blade 48 and bypasses with the bypass wind direction changing blade 49. The outlet 46 is closed, and the shielding plate driving means 52 sets the lower blowing state by moving the shielding plate 51 downward to open the lower blowing inlet 38. In the outdoor unit 32, the water pumped from the cistern 21 by the pump 22 is heated by passing through the operating boiler 23 by closing the electromagnetic valve 24 to become hot water, and after passing through the evaporator 26, It passes through the flexible connection pipe 34 through the water supply port 67 which is a heat medium supply port, and is sent to the indoor unit 37. The hot water and the air sucked from the lower blowing inlet 38 by the blower 36 exchange heat with the heat exchanger 35, and the sucked air is heated to become hot air and blows out from the lower outlet 40. Is done. The temperature of the hot water supplied from the outdoor unit 32 is about 75 ° C. at a high temperature, and the hot air heated thereby reaches 70 ° C., but since it blows out from the lower outlet 40 along the floor surface, a sufficient heating feeling is obtained. Is obtained, and there is no discomfort of the warm air blown from above.
[0028]
Next, when the cooling operation is performed with the indoor unit installed on the floor surface, as shown in FIG. 1, the switching means 41 causes the casing 42 to rotate upward about the rotation shaft 43 of the blower 36, and the wind direction changing means 47 operates the upper changing blade 48 to open the upper blowing port 45, and the shielding plate driving means 52 moves the shielding plate 51 upward to close the lower blowing suction port 38 to change the upper blowing state. Set. On the other hand, in the outdoor unit, the refrigerant in the heat pump circuit 31 is cooled by passing through the decompression means 30 by the operation of the compressor 28 and enters the evaporator 26. The water pumped from the cistern 21 by the pump 22 passes through the bypass pipe 25 by the opening of the electromagnetic valve 24 and exchanges heat with the refrigerant cooled by the evaporator 26, so that cold water is generated here. This cold water passes through the flexible connection pipe 34 via the water supply port 67 of the water outlet 33 and enters the heat exchanger 35 of the indoor unit 37. The air sucked from the upper blowing inlet 39 by the blower 36 is cooled by the heat exchanger 35 and blown out from the upper outlet 45, whereby the room is cooled. At this time, moisture contained in the air is condensed by cooling in the heat exchanger 35, and water droplets are generated on the surface of the heat exchanger 35. The water droplets of the condensed water eventually grow and flow into a drain receiver 54 provided below the heat exchanger 35 by gravity. Condensed water collected in the drain receiver 54 is pumped up by the drainage pump 53 and is pumped to the drainage channel 55 side, so that the flexible pipe 34 and the drainage channel 55 are bent depending on the installation state of the indoor unit 37. However, the dew condensation water is sent to the dew condensation water discharge port 68 provided in the water outlet 33 to which the drainage channel 55 is connected, and is discharged to the outside through the drain hose 56 connected thereto. Thus, the dew condensation water at the time of cooling can be discharged irrespective of the installation state of the indoor unit 37, so that the cooling operation can be performed without any problem even when the floor surface is installed.
[0029]
Further, when performing the up-blowing operation of the indoor unit 37, it is possible to operate the upper changing blade 48 and the bypass air direction changing blade 49 by the air direction changing means 47 to open the upper outlet 45 and the bypass outlet 46, respectively. It can be configured. A part of the air sucked from the upper blowing inlet 39 by the blower 36 is heat-exchanged by the heat exchanger 35 and blown out from the upper outlet 45. On the other hand, air other than the above sucked by the blower 36 from the upper blowing inlet 39 passes through the bypass air circuit 44 and is blown out from the bypass outlet 46 without passing through the heat exchanger 35. By this action, when the room temperature reaches near the set temperature of the heating / cooling operation and the air conditioning load becomes small, mild air conditioning operation can be performed.
[0030]
As described above, high-temperature wind floor heating with sufficient heating feeling and summer cooling can be realized with one indoor unit, and the indoor unit is installed on the wall surface in order to treat condensed water. Since it does not need to be fixed, the installation location can be changed according to the operation of heating or cooling, the degree of freedom of installation can be expanded, and the installation space can be made compact. And since it is possible to switch between the upper and lower blowouts according to the operating conditions, high temperature air is blown out along the floor surface during heating, and cold air is blown out toward the ceiling during cooling, so that the room with a high degree of freedom of installation The comfort in the unit can be improved. Furthermore, according to the user's purpose, one indoor unit can be moved anywhere in a room with a heat medium outlet, and it can be used as a living room in the daytime or a bedroom in the nighttime. Can be realized at low cost. Moreover, since it can be removed and stored from the heat medium outlet when not required, convenience is improved even in an indoor installation space.
[0031]
Then, when it is desired to add an indoor unit as shown in FIG. 3, since the indoor unit 37 is provided with the branch supply port 58, it can be easily connected and detached, and the convenience is increased, and the form of the air-conditioned room Even when one indoor unit cannot provide sufficient comfort, for example, a place where it is difficult for hot and cold air to reach can be obtained, the comfort can be improved by a synergistic effect with the added indoor unit. Although the floor panel 59 has been described as an indoor unit to be added here, it is obvious that the same effect can be obtained even if the same indoor unit 37 is added or another type of indoor unit is added. It is.
[0032]
Also, as shown in FIG. 4, the refrigerant flow path and the water supply flow path of the stacked heat exchanger 61 are formed by parallel flow paths that are stacked in a plurality of stages, so that the heat exchange area is sufficient for each flow path. As a whole, the cross-sectional area of the flow path increases and the pressure loss decreases. Therefore, since the pressure loss of the water circuit can be reduced, the flow rate of the chilled water can be increased, and an air conditioning system that can easily increase the cooling capacity of the indoor unit can be provided.
[0033]
Furthermore, the flow path height of the refrigerant flow path of the stacked heat exchanger 61 is the thickness of the refrigerant plate 62, and the width of the refrigerant flow path is the width of the slit 62a. In this embodiment, the thickness of the refrigerant plate 62 and the water supply plate 63 is designed to be 0.1 to 1.0 mm and the width of the slit 62a is designed to be 2.0 to 15 mm so that the Reynolds number is 500 or less. Yes.
[0034]
Therefore, the state of the water supply flowing through the water supply channel is a laminar flow. In general, laminar flow is considered to have low heat transfer, but heat transfer is promoted when the temperature boundary layer is made thin by reducing the channel height as in the present invention. Further, by making the temperature boundary layer thin, the temperature distribution in the height direction of the feed water flowing through the feed water flow channel can be made uniform.
[0035]
In addition, since the temperature of the main flow of the feed water flowing through the feed water flow channel and the temperature of the feed water flowing along the wall surface are substantially the same temperature, the feed water may be locally cooled and the feed water may be frozen in the heat exchanger. Therefore, cold water can be generated with high efficiency.
[0036]
Therefore, by operating the outdoor unit 32 when cold water is required, cold water as needed can be generated instantaneously and continuously. In addition, since the internal volume is smaller than conventional double tube heat exchangers and plate heat exchangers, the amount of refrigerant to be filled can be reduced, the apparatus can be downsized, and the hot water supply apparatus can be enlarged. A cold water supply function can be added in a compact manner.
[0037]
In addition, since the heat pump circuit 31 using the refrigerant is completed only in the outdoor unit 32 and does not lead the refrigerant of the heat pump circuit to the indoor unit, a hydrocarbon such as propane or the like that is flammable or explosive in the heat pump circuit 31 Even if the system refrigerant is enclosed and used, the safety can be enhanced without leakage of the hydrocarbon refrigerant into the room.
[0038]
(Example 2)
FIG. 5 is a configuration diagram of an air conditioning system according to a second embodiment of the present invention. As shown in FIG. 5, an ejector 69, which is a dew condensation water suction device, is provided in the indoor unit 37, and a heat medium outlet side 70 of the heat exchanger 35 and a nozzle portion 71 constituting the ejector 69 are connected. The suction part 72 of the ejector 69 is connected to a drain receiver 54 provided in the lower part of the heat exchanger 35, while the discharge part 73 is connected to the flexible connection pipe 34 and connected to the outdoor unit 32 via the water outlet 33. ing. An overflow drain port 74 is provided at the upper part of the cistern 21 of the outdoor unit 32 so that the water is drained from a connected discharge pipe 75 when the water level in the cistern 21 exceeds a predetermined position.
[0039]
In the above configuration, the condensed water adhering to the surface of the heat exchanger 35 during cooling operation flows into a drain receiver 54 provided below the heat exchanger 35 due to gravity. The condensed water collected in the drain receiver 54 is sucked by the ejector 69 and merges with the cold water that has passed through the heat exchanger 35 from the suction portion 72, and is sent from the discharge portion 73 to the flexible connection pipe 34. Regardless of how the flexible pipe 34 is bent depending on the installation state of the indoor unit 37, the dew condensation water is sent from the water outlet 33 to the systern 21 of the outdoor unit 32. In this way, the dew condensation water during cooling can be discharged regardless of the installation status of the indoor unit 37, so that the cooling operation can be performed without any problem even if it is installed on the floor surface, and the dew condensation water can be removed outdoors at a relatively low cost with a simple configuration. It is possible to realize a configuration that can discharge easily. In addition, the reduction of circulating water in the cistern 21 due to evaporation can be prevented by replenishing the condensed water, and the replenishing work of the circulating water can be omitted. Since the water is automatically drained from the overflow drain port 74 to the discharge pipe 75, no maintenance is required.
[0040]
【The invention's effect】
As described above, the air conditioning system of the present invention has the following effects.
[0047]
Steam Since the reduction of the cold water due to the generation is prevented, the replenishment work of the circulating water can be omitted, and the water exceeding the predetermined amount is automatically drained even when the inflow of the condensed water is large, so that the maintenance is unnecessary.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of an air conditioning system showing an indoor unit in a top blowing state according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional configuration diagram of an indoor unit in a bottom blowing state of the air conditioning system
FIG. 3 is a perspective view showing an expanded state of indoor units of the air conditioning system.
FIG. 4 is an exploded view of the evaporator of the air conditioning system
FIG. 5 is a configuration diagram of an air conditioning system according to a second embodiment of the present invention.
FIG. 6 is a configuration diagram of an air conditioning system in a first conventional example.
FIG. 7 is a configuration diagram of an air conditioning system in a second conventional example.
FIG. 8 is a perspective view of a room for explaining temperature distribution of the air conditioning system in the first conventional example.
FIG. 9 is an explanatory diagram of the distribution of the blowing temperature of the air conditioning system.
FIG. 10 is an explanatory diagram of vertical temperature distribution of the air conditioning system.
[Explanation of symbols]
21 Sistern
22 Pump
23 Boiler
26 Evaporator
27 Water circuit
28 Compressor
29 Condenser
30 Pressure reducing means
31 Heat pump circuit
33 Water outlet (heat medium outlet)
34 Flexible connection piping
35 Heat exchanger
37 Indoor units
40 Lower outlet
41 Switching means
45 Top outlet
53 Drainage pump
54 Drain receptacle
58 Branch supply port
61 Stacked heat exchanger
62 Refrigerant plate
62a Refrigerant slit
62b Water supply slit
63 Water supply plate
63a Refrigerant slit
63b Water supply slit
64 Bulkhead plate
64a Refrigerant slit
64b Water supply slit
67 Water supply port (heat medium supply port)
68 Condensate outlet
70 Ejector
74 Overflow drain

Claims (1)

A heat exchanger that supplies a low-temperature heat medium and cools the room, a drain receiver that collects and collects condensed water condensed on the surface of the heat exchanger, and a drain pump that discharges the condensed water in the drain receiver to the outside of the room In an air conditioning system comprising an indoor unit having a flexible connection pipe for supplying a low-temperature heat medium to the indoor unit, a heat pump circuit having a compressor, a condenser, a decompression means, an evaporator, a system, a pump, and a boiler And a water circuit for flowing water that is a heat medium supplied to the indoor unit so as to be cooled by exchanging heat with a refrigerant of a heat pump circuit in the evaporator, and the evaporator has a slit-shaped hole. A plurality of refrigerant flow path plates, a plurality of water supply flow path plates having slit-shaped holes, and a refrigerant supply plate provided between the plurality of refrigerant flow path plates and the water supply flow path plate. A stack-type heat exchanger in which a flow path for refrigerant and water supply is formed from a plurality of partition plates forming a partition wall, wherein an ejector that is a dew condensation water suction device is provided in the indoor unit, and a discharge portion of the ejector Is connected to the flexible connection pipe, and is connected to an outdoor unit through a water outlet.An overflow drain port is provided at the upper part of the cistern of the outdoor unit, and is connected when the water level in the cistern exceeds a predetermined position. Air conditioning system in which condensed water is drained from the exhaust pipe .

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