JPH04353327A - Air-conditioning device with ventilating function - Google Patents

Abstract

PURPOSE:To facilitate air-conditioning which is combined with a freezing cycle and performs automatic control as the efficiency of temperature exchange is always kept at 100% so that not only ventilation is solely effected but also disturbance is prevented from being exerted on indoor hot heat environment in the situation wherein the degree of secrecy and heat insulation of a housing is increased. CONSTITUTION:During cooling operation in a summer season, air at the exterior 1 of a room is fed through an air-conditioning ventilating element 8, a cooler 11 located therebehind, an indoor discharge blower 13, and an indoor discharge 22. Air from the interior 2 of a room is heat-exchanged through the air-conditioning ventilating element 8, a reheater 12 located therebehind, an outdoor discharge blower 16, and an outdoor discharge port 5 and discharged to the exterior 1 of a room. During heating operation in a winter season, the cooler 11 and the reheater 12 are switched by means of a four-way valve to perform air-conditioning ventilation operation. Heat exchange during dehumidifying operation is effected in a similar manner described in that during cooling in a summer season and is carried out in a state that dehumidifying switching dampers 26a and 26b are changed over and the outdoor discharge port 5 and an outdoor suction port 4 are closed.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention takes into account energy saving as a system as houses become more airtight and highly insulated.
We not only provide ventilation, but also ventilation, cooling, and heating to improve temperature exchange efficiency so as not to disturb the indoor thermal environment.
This invention relates to an air conditioner with a ventilation function that is equipped with dehumidifying air conditioning.

0002

[Prior Art] Conventionally, as described in Japanese Utility Model Application No. 48-26758, a rotating matrix heat exchanger or a cross-flow heat exchanger is installed in an air conditioner equipped with a refrigeration cycle to provide ventilation. A device equipped with this has been proposed.

In such air conditioners, a cross-flow heat exchanger is installed near the partition plate, and a part of the high-pressure, high-temperature outdoor air inside the fan casing is transferred through a duct that opens at one end of the fan casing. At the same time, a part of the air in the low-pressure, low-temperature indoor space provided near the partition plate is passed through the cross-flow heat exchanger and sent into the room. The air conditioner can be moved to the outdoor space near the room where the air pressure is low to provide ventilation during summer cooling.

0004

[Problems to be Solved by the Invention] However, according to the above-mentioned prior art, ventilation is only possible during summer cooling. In addition, since indoor fans and outdoor fans blow air to cross-flow heat exchangers, coolers, and reheaters, vortices are generated in the air flow, and the fan motor output is caused by a drop in fan pressure. Problems include an increase in power consumption due to this increase and an increase in noise due to the above-mentioned vortex generation.

[0005] The object of the present invention is to solve this problem, and provide ventilation, cooling, and air conditioning systems that improve the efficiency of temperature exchange during summer cooling and winter heating, achieve significant heat recovery, and achieve energy savings. We provide air conditioners with ventilation functions that are equipped with heating and dehumidification functions, and effectively use the heat generated by the compressor in each operation mode to further save energy and achieve low-noise operation. It's about doing.

[0006]

[Means for Solving the Problems] In order to achieve the above object, the first invention provides an air conditioner equipped with a refrigeration cycle with an air conditioning ventilation element (a rotating matrix heat exchanger,
An indoor blower that incorporates a cross-flow heat exchanger, etc.), has a cooler or reheater placed after the air passage of the air conditioning ventilation element, and has suction ports after the cooler and reheater. An outdoor blower is installed, and an exhaust heat damper and a heated damper are installed in the compressor room, and the exhaust heat damper is opened during summer cooling, and the heated damper is opened during winter heating. The above-mentioned parts are housed in the unit and are configured as operating means for operating ventilation during summer cooling and winter heating.

[0007] Furthermore, the second invention provides an indoor bypass passage between the indoor suction port and the cooler at the same time as the damper of the indoor suction port with the air conditioning ventilation element is closed; At the same time as the installed damper closes, an outdoor bypass passage is created between the outdoor suction port and the reheater.
Cooling operation, heating operation, and space heating operation are heat pump type, and are composed of operation means for each operation.

Further, in the third aspect of the present invention, when the damper of the outdoor air outlet is closed and the damper of the outdoor suction port is closed, the damper has a double damper structure, and the inner damper is opened.
A dehumidifying bypass passage is configured in the unit of the outdoor suction port and the outdoor suction port, and it is composed of an operating means for dehumidifying operation, and when each operation is stopped, the damper of the outdoor suction port is closed, and the damper of the outdoor air outlet is closed. Configure so that it is closed.

[0009]

[Function] In the first aspect of the invention, the outdoor suction inlet and the outdoor outlet are installed outdoors, and the cooling, heating, and dehumidifying unit equipped with an air conditioning and ventilation function and equipped with a refrigeration cycle and an air conditioning ventilation element is installed indoors. The ventilation function is used to exhaust dirty air outside and bring fresh air into the room when cooling or heating the room or when ventilation is required.In this process, it prevents disturbances to the indoor thermal environment. In order to improve temperature exchange efficiency, ventilation operation is carried out to increase the heat recovery rate during summer cooling and winter heating, and promote energy savings.

[0010] In the second invention, by opening and closing the damper, an indoor cooling operation and a heating operation are performed using the indoor and outdoor bypass passages on the indoor side and the outdoor side, respectively. If ventilation is required, the ventilation operation described above will be performed.

[0011] In the third aspect of the invention, the dampers at the outdoor suction port and the outdoor air outlet are each closed, and the indoor dehumidification operation is performed using the dehumidification bypass passage. Furthermore, if the indoor temperature rises with the reheater, the damper at the outdoor outlet opens and exhausts the heat outdoors. If ventilation is required, the ventilation operation described above will be performed.

0012

Embodiments Hereinafter, embodiments of the present invention will be explained with reference to the drawings. FIG. 1 is a diagram showing the configuration of an embodiment of an air conditioner with a ventilation function according to the present invention during summer cooling, in which 1 is an outdoor air conditioner, 2 is an indoor air conditioner, 3 is a wall, 4 is an outdoor suction port, and 5 is an outdoor air conditioner. outdoor air outlet; 6 is a suction duct; 7 is a blowout duct; 8 is an air conditioning ventilation element (including a rotating matrix type heat exchanger and a cross-flow type heat exchanger; in the description of this embodiment, a cross-flow type heat exchanger is used) ), 9 is an outdoor suction port with air conditioning ventilation element 8, 10
11 is a cooler, 12 is a reheater, 13 is an indoor blower, 14 is an inlet of the indoor blower 13, 15 is an outdoor blower, 16
17 is a compressor, 18 is a compressor room, 19 is an exhaust heat damper, 20 is a heated damper, 2
1a and 21b are partition plates, 22 is an indoor air outlet, 23 is an indoor suction port, and 24 is a unit.

In the figure, an outdoor room 1 and an indoor room 2 are partitioned by a wall 3, a unit 24 is installed in the indoor room 2, and an outdoor suction port 4 and an outdoor air outlet 5 are installed in the outdoor room 1. FIG. 1 shows the state during summer cooling, and during this summer cooling, for example, when another air conditioner is performing cooling operation, or when the air conditioner with ventilation function of this embodiment is in operation. When the air inside the room 2 becomes dirty due to cooling operation (described later) or when ventilation is required, the air conditioning ventilation operation starts when the indoor blower 13 and the outdoor blower 15 operate. Fresh warm air flows through the outdoor suction port 4, the suction duct 6, the outdoor suction port 9 with the air conditioning ventilation element 8, the air conditioning ventilation element 8, the cooler 11, the suction port 14 of the indoor blower 13, the indoor blower 13, It is sent into the room 2 through the indoor air outlet 22. On the other hand, the dirty and cold air in the room 2 is removed from the indoor suction port 2.
3. The indoor air intake 10 with the air conditioning ventilation element 8, the air conditioning ventilation element 8, the reheater 12, the outdoor air blower 15 through the air inlet 16, the outdoor air blower 15, the air duct 7, the outdoor air outlet 5, and the outdoor air 1 is discharged. In the above process, the fresh warm air outside 1 and the dirty cold air inside 2 exchange heat through the air conditioning ventilation element 8 through cross flow. At this time, the air conditioning ventilation element 8 has a structure in which the intake air from the outdoor 1 and the blown air from the indoor 2 never intersect.

In the above-mentioned ventilation operation, when the maximum temperature exchange efficiency in the air conditioning ventilation element 8 reaches, for example, about 50%, the refrigeration cycle is activated, and the air from outside is further cooled by the cooler 11 and sent to the room 2. sent. on the other hand,
The air from inside the room is further warmed by the reheater 12 and sent to the outside 1.
Automatic control is performed so that the temperature exchange efficiency is approximately 100%, and air conditioning ventilation operation during summer cooling is performed without causing any disturbance to the thermal environment in the room 2.

Furthermore, since the heat exhaust damper 19 provided in the compressor room 18 is open, the heat generated by the compressor 17 is transferred to the dirty air in the room 2 through the suction port 16 of the outdoor blower 15. They are also discharged outdoors. For this reason,
Since the input to the compressor 17 is small, it is possible to save energy.

FIG. 2 is a diagram showing the case where the embodiment shown in FIG. 1 is operated for air conditioning and ventilation during winter heating, and parts corresponding to those in FIG. 1 are given the same reference numerals.

In the figure, the refrigeration cycle is of a heat pump type using a four-way valve (not shown), and therefore, during winter cooling, the cooler 11 used for summer cooling explained in FIG. A reheater 12 operates as a cooler 11. During winter heating, for example, when other air conditioners or various heaters are in heating operation, or when the air conditioner with ventilation function of this embodiment is in heating operation (
(described later) and the air in the room 2 becomes polluted,
Alternatively, if ventilation is required, air conditioning ventilation operation is performed as follows. That is, when the indoor blower 13 and the outdoor blower 15 operate, fresh cold air from the outdoors 1 is transferred to the outdoor suction port 4, the suction duct 6, the air conditioning ventilation element 8, the outdoor suction port 9, the air conditioning ventilation element 8, The air is sent into the room 2 through the reheater 12 , the suction port 14 of the indoor blower 13 , the indoor blower 13 , and the indoor air outlet 22 . On the other hand, the dirty warm air in the room 2 flows through the indoor suction port 23.
, the indoor side suction port 10 with the air conditioning ventilation element 8, the air conditioning ventilation element 8, the cooler 11, the suction port 16 of the outdoor blower 15, the outdoor blower 15, the air outlet duct 7, and the outdoor air outlet 5 before being discharged to the outdoors 1. be done. In the above process, the fresh cold air outside 1 and the dirty warm air inside 2 exchange heat through the cross flow of the air conditioning ventilation element 8.

In this ventilation operation, when the maximum temperature exchange efficiency in the air conditioning ventilation element 8 reaches, for example, about 60%, the refrigeration cycle is activated, and the air from outside is further warmed by the reheater 12 and returned to the room 2. sent. on the other hand,
The air from the room is further cooled by the cooler 11 and sent to the outdoors 1.
Automatic control is performed so that the temperature exchange efficiency is approximately 100%, and air conditioning and ventilation operation during winter heating is performed without causing any disturbance to the thermal environment of the room 2.

[0019] Also, since the heat damper 20 provided in the compressor room 18 is open, the heat generated in the compressor 17 is transferred to fresh air from the outside 1 through the suction port 14 of the indoor blower 13. He was sent to room 2 along with the . For this reason, the temperature exchange efficiency in the room 2 is further improved, and the input to the compressor 17 is small, making it possible to save energy.

Furthermore, during summer cooling and winter heating, by inserting a filter or an air purifier (none of which are shown) into the outdoor suction port 4, the air from the outdoor 1 can be made fresher and sent into the indoor 2. Alternatively, by inserting a similar filter or air purifying device into the outdoor air outlet 5, the dirty air inside the room 2 can be cleaned and returned to fresh air before being discharged to the outdoors 1. Moreover, by inserting a filter or an air purifier into the outdoor suction port 4 and the outdoor air outlet 5, fresh air can be taken in and discharged.

FIG. 3 is a structural diagram showing another embodiment of the air conditioner with ventilation function according to the present invention when it functions as an air conditioner, in which 25 and 25a are outdoor switching dampers, 26a is a dehumidification switching damper, and 27 28 is an outdoor bypass passage, 29 is an indoor bypass passage, and parts corresponding to those in FIG. 1 are given the same reference numerals.

In the figure, an outdoor switching damper 25 is provided in the suction duct 6, and a dehumidification switching damper 26a is provided inside the outdoor switching damper 25, resulting in a double damper structure. Outdoor switching damper 25a
is provided. The indoor air outlet 22 and the indoor suction port 23 are partitioned by a partition plate 21b, and an indoor switching damper 27 is provided on the partition plate 21b.

In the cooling operation, at the same time as the refrigeration cycle operates, the outdoor switching dampers 25, 25a are opened, and the outdoor suction port 4 and the reheater 12 are connected via the outdoor bypass passage 28, and the The air from the outdoor suction port 4,
Outdoor bypass passage 28, reheater 12, outdoor blower 1
5 suction port 16, outdoor blower 15, blowout duct 7,
It is discharged to the outdoors 1 through the outdoor air outlet 5, and on the other hand, the indoor side switching damper 27 is opened and the air is discharged from the indoor suction port 23 and the cooler 11.
By connecting these through the indoor bypass passage 29, air from the indoor 2 is transferred to the indoor suction port 23, the indoor bypass passage 29, the cooler 11, and the suction port 1 of the indoor blower 13.
4. The cool air is blown into the room 2 through the indoor blower 13 and the indoor air outlet 22, and is circulated to cool the room 2.

Furthermore, the heat generated in the compressor 17 is discharged to the outside 1 through the suction port 16 of the outdoor blower 15 because the exhaust heat damper 19 provided in the compressor room 18 is open. Ru. For this reason, the input to the compressor 17 is small, making it possible to save energy.

FIG. 4 is a structural diagram showing a case where the embodiment shown in FIG. 3 functions as a heater, and parts corresponding to those in FIG. 3 are given the same reference numerals.

In the figure, the refrigeration cycle is of a heat pump type using a four-way valve (not shown), and therefore the cooler 11 in FIG. 3 is used as the reheater 12.
A reheater 12 operates as a cooler 11.

In the heating operation, the outdoor switching dampers 25, 25a are opened at the same time as the refrigeration cycle is activated, and the outdoor suction port 4 and the cooler 11 are connected via the outdoor bypass passage 28. Air from the outdoor 1 is passed through the outdoor suction port 4,
It is discharged to the outdoors 1 through the suction duct 6, the outdoor bypass passage 28, the cooler 11, the suction port 15 of the outdoor blower, the outdoor blower 16, the blow duct 7, and the outdoor blower outlet 5, while the indoor switching damper 27 By opening, the indoor suction port 23 and the reheater 12 are connected via the indoor bypass passage 29, and the air from the indoor room 2 is transferred to the indoor suction port 23, the indoor bypass passage 29, the reheater 12, and the indoor air outlet. Blower 13
The warm air is blown into the room 2 through the suction port 14, the indoor blower 13, and the indoor air outlet 22, and is circulated to heat the room 2.

Furthermore, since the heat damper 24 provided in the compressor room 18 is open, the heat generated in the compressor 17 is transferred to the room 2 through the suction port 14 of the indoor blower 13.
It blows out as warm air. For this reason, the heating capacity is improved and the input to the compressor 17 is small, making it possible to save energy.

Note that in order to increase the heating capacity, a heat source such as a heater (not shown) may be incorporated in the vicinity of the indoor suction port 23 or the indoor air outlet 22.

FIG. 5 is a structural diagram showing the case where the embodiment shown in FIG. 3 functions as a dehumidifier, in which 26b is a dehumidification switching damper, 30 is a dehumidification bypass passage, and the parts corresponding to the previous drawings are The same symbols are given.

[0031] In the figure, the blow-off duct 7 is provided with a dehumidification switching damper 26b. In the dehumidification operation, the indoor blower 14 and the outdoor blower 16 operate, and at the same time,
The outdoor switching damper 25, the dehumidification switching damper 26a of the outdoor switching damper 25, and the dehumidification switching damper 26b of the blowout duct 7 are opened, the outdoor suction port 4 and the outdoor air outlet 5 are closed, and the air conditioning ventilation element 8 and The outdoor side suction port 9 and the outdoor blower 15 are connected via a dehumidification bypass passage 30. As a result, the humid air from room 2 is
Indoor suction port 23, indoor suction port 10 with air conditioning ventilation element 8, air conditioning ventilation element 8, cooler 11, suction port 16 of outdoor blower 15, outdoor blower 15, dehumidification bypass passage 30, suction duct 6, air conditioning ventilation element 8
outdoor suction port 9, air conditioning ventilation element 8, reheater 1
2. The air is blown into the room 2 as dehumidified air that has been heat exchanged with the air conditioning ventilation element 8 through the suction port 14 of the indoor blower 13, the indoor blower 13, and the indoor air outlet 22. Thereby, the room 2 is dehumidified through circulation.

When the air-conditioning ventilation element 8 reaches its maximum dehumidification capacity, the refrigeration cycle is activated, and the air is further dehumidified by the cooler 11 and circulated through the room 2 to promote dehumidification. In addition, since the heat exhaust damper 19 provided in the compressor room 18 is open, the heat generated in the compressor 17 passes through the suction port 16 of the outdoor blower 15 and is combined with dehumidified air into the room 2.
burst into speech. Furthermore, when the heat generated by the reheater 12 and the compressor 17 becomes higher than room temperature, the dehumidification switching damper 26b provided in the blow-off duct 7 is automatically closed, the outdoor blow-off port 5 is opened, and the air from the room 2 is automatically controlled. The high temperature air of
A dehumidifying operation is performed so that the thermal environment in the room 2 is not disturbed by being discharged.

Note that when stopped, the dehumidification switching damper 26a
, 26b are opened, and the outdoor suction port 4 and the outdoor air outlet 5 are closed, thereby preventing outside air from entering through them.

Although one embodiment of the present invention has been described above, the present invention is not limited to this embodiment. For example, an air conditioning ventilation operation can be performed by sensing indoor and outdoor CO, CO2, O2, cigarette smoke, smoke generated in the kitchen, or other smoke or odor using a sensor or the like.

[0035]

[Effects of the Invention] As explained above, according to the present invention,
Equipped with an air conditioning ventilation element and a refrigeration cycle and housed in one unit, each damper increases the maximum temperature exchange efficiency of the air conditioning ventilation element during summer cooling and winter heating.
When the temperature reaches 0 to 60%, the refrigeration cycle is activated, and the cooler and reheater automatically control the temperature exchange efficiency to always maintain it at 100%, allowing air conditioning and ventilation to operate without disturbing the indoor thermal environment. can. In addition, regarding the dehumidification function, when the maximum dehumidification capacity of the air conditioning ventilation element is reached, the refrigeration cycle is activated and further dehumidification occurs in the cooler, promoting indoor dehumidification. When the temperature becomes higher than room temperature, the high temperature air is automatically discharged outside, so dehumidifying operation can be performed without disturbing the indoor thermal environment. Furthermore, cooling operation and heating operation can be performed by simply switching the damper, and during air conditioning ventilation operation, cooling operation, heating operation, and dehumidification operation during refrigeration cycle operation, the heat generated from the compressor can be transferred to the exhaust heat damper and heated damper. By discharging it outdoors and taking it indoors, it can be used effectively, reducing input to the compressor and saving energy.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a state of an embodiment of an air conditioner with ventilation function according to the present invention during summer cooling.

FIG. 2 is a diagram showing the state of the embodiment shown in FIG. 1 during winter heating.

FIG. 3 is a diagram showing a state during cooling operation of another embodiment of the air conditioner with ventilation function according to the present invention.

FIG. 4 is a diagram showing the state of the embodiment shown in FIG. 3 during heating operation.

FIG. 5 is a diagram showing the state of the embodiment shown in FIG. 3 during dehumidification operation.

[Explanation of symbols] 8 Air conditioning ventilation element 11 Cooler 12 Reheater 13 Indoor blower 15 Outdoor blower 19　Exhaust heat damper 20 Heated damper 28 Outdoor bypass passage 29 Indoor bypass passage 30 Dehumidification bypass passage

Claims (7)

[Claims] [Claim 1] The first
an air-conditioning ventilation element to which an inlet is connected; a cooler of a refrigeration cycle disposed on a first outlet side that discharges air sucked in from the first inlet of the air-conditioning ventilation element; A first air passage is formed by an indoor blower that blows out air from the air conditioner through an indoor air outlet, and the air conditioning ventilation element has a second air inlet connected to the indoor air inlet, and A reheater of the cooling cycle is disposed on the side of the second outlet that discharges the air sucked in from the second suction port, and the air from the reheater is blown out from the outdoor outlet through the suction duct. A second air passage is formed with the outdoor blower, and during summer cooling, air from the outdoors is sent into the room from the indoor air outlet through the first air passage, and air from the room is sent to the second air passage. An air conditioner with a ventilation function, characterized in that ventilation and cooling of a room is made possible by discharging air from the outdoor outlet through an air passage. 2. In claim 1, the cooler is further operated as a reheater of a refrigeration cycle, and the reheater is operated as a cooler of a refrigeration cycle, so that air from outside is removed during winter heating. Ventilation and heating of the room is possible by sending air into the room from the indoor air outlet through the first air passage and exhausting air from the room to the outside from the outdoor air outlet through the second air passage. An air conditioner with a ventilation function characterized by: 3. In claim 2, the heat generated by the compressor is discharged outdoors from the outdoor outlet by the outdoor blower during summer cooling, and is discharged indoors by the indoor blower during winter heating. An air conditioner with a ventilation function that draws air into the room from an outlet. 4. According to claim 2 or 3, the first air passage is directly connected to the second exhaust port of the air conditioning ventilation element from the suction duct by blocking the first intake port of the air conditioning ventilation element. a first switching damper that changes the air passage to a third air passage leading to the reheater disposed on the outlet side; and a first switching damper that switches the second air passage to the third air passage leading to the reheater disposed on the outlet side; a second switching damper for changing the air intake port directly to a fourth air passage connected to the cooler disposed on the second outlet side of the air conditioning ventilation element; Cooling operation and heating are performed by discharging air outdoors from the outdoor outlet through the third air passage and sending air from indoors into the room from the indoor outlet via the fourth air passage. An air conditioner with a ventilation function, characterized in that it is configured to enable operation. 5. According to claim 1, 2 or 3, the air outlet of the cooler is arranged on the first inlet of the air conditioning ventilation element and the second outlet of the air conditioning ventilation element. a third switching damper that selectively blocks either one of the outdoor suction port and the bypass channel; and a third switching damper that selectively blocks one of the outdoor air outlet and the bypass channel. A fourth switching damper for blocking the air conditioner is provided, the third switching damper blocks the outdoor suction port, and the fourth switching damper blocks the outdoor air outlet, so that the air conditioner is disconnected from the indoor suction port. A fifth passage is formed to reach the indoor air outlet via the ventilation element, the cooler, the outdoor blower, the bypass passage, the air conditioning ventilation element, the reheater, and the indoor blower to perform dehumidification operation. An air conditioner with a ventilation function characterized by: 6. In claim 5, the heat generated by the compressor is absorbed by the outdoor blower, and when the temperature of the reheater and the compressor becomes higher than room temperature, the fourth switching is performed. An air conditioner with a ventilation function, wherein the outdoor blower discharges air from the outdoor outlet by blocking the bypass passage with a damper. 7. According to claim 5 or 6, when the operation is stopped, the third switching damper blocks the outdoor suction port,
An air conditioner with a ventilation function, characterized in that the fourth switching damper blocks the outdoor air outlet to prevent outside air from entering.