JP2012007790A - Multifunctional ventilation fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multifunctional ventilation fan that effectively utilizes outside air and a refrigerator as heat sources, and is saved in energy.SOLUTION: A suction port damper 16 is arranged at a suction port 34 of a blower chamber 20. The blower chamber 20 is connected to either an indoor duct 14a and an outdoor duct 14b by using the suction port damper 16. A discharge port damper 18 is arranged at a discharge port 36 of the blower chamber 20. The blower chamber 20 is connected to either a heat source accommodation chamber 24 and the outdoor duct 14b by using the discharge port damper 18. A cold heat source 56 cooled by the refrigerator is arranged in the heat source accommodation chamber 24. Air is cooled by the cold heat source 56 and blown into a room 13 from a blow-out port 22. A mode is set to one of a circulation mode, a forcible exhaustion mode and a forcible air suction mode by switching the suction port damper 16 and the discharge port damper 18. In the circulation mode, in-room air is circulated and easy cooling is performed by the cold heat source 56. In the forcible exhaustion mode, air in the room 13 is forcibly exhausted. In the forcible air suction mode, easy cooling is performed by using outside air.

Description

  The present invention relates to a multi-function ventilation fan.

  Conventionally, a ventilation fan that can perform exhaust and intake is provided. Moreover, in an air conditioner, it is generally performed to maintain a room temperature at a predetermined temperature by having a heat source and blowing cold air or hot air from these heat sources.

  However, most conventional general air conditioners use electric power to secure a necessary heat source. Therefore, power consumption tends to increase in summer and winter. Since this power consumption is seasonal, it is performed on a nationwide scale, and its power consumption is rather enormous. In addition, as a power source, the ratio of thermal power generation that still uses fossil fuels is still high, which has an adverse effect on global warming.

  For this reason, for example, as shown in Patent Document 1, a cool storage body, a heat storage body, or the like is selectively set in an air passage in a main body incorporating a blower, and cool air or warm air is blown out. ing. In this case, since a heat source cooled or heated by a refrigerator or a microwave oven can be used, intensive power demand can be suppressed.

Japanese Patent Laid-Open No. 9-89284

  However, the conventional one has a single function and has a problem that it cannot be used as a ventilation fan or the outside air cannot be used efficiently.

  It is an object of the present invention to provide an efficient and energy-saving multifunction ventilator that can effectively use outside air as a heat source in addition to the ventilator function.

  To achieve the above object, the present invention includes a blower, a blower chamber having a built-in blower and having a suction port and a discharge port, and a continuous heat source in the blower chamber via the discharge port. The heat source exchanges heat with the passing air, and a heat source storage chamber that blows out the air after heat exchange into the room from the air outlet, and the air intake room is attached to the suction port, and the blower room is connected to the indoor duct part and the outdoor duct part. A suction port damper that is switched to connect to any one of the above, a discharge port damper that is attached to the discharge port and that switches the blower chamber to connect to either the heat source storage chamber or the outdoor duct, and the room temperature. An indoor temperature sensor for detecting, an outdoor temperature sensor for detecting the outside air temperature, a set indoor temperature for exhaust and a set outside air temperature for intake can be set. A control unit that controls switching of the suction port damper and the discharge port damper and driving of the blower based on a detected temperature signal from the heat source, and the control unit stores a heat source in the heat source storage chamber. Sometimes, the inlet duct is set at a first position where the outdoor duct portion is closed and the blower chamber communicates with the indoor duct portion, and the outdoor duct portion is closed and the blower chamber communicates with the heat source storage chamber. The discharge port damper is set at one position, the circulation mode for circulating indoor air by the blower, and the suction port damper at the second position for closing the indoor duct portion and communicating the blower chamber with the outdoor duct portion. Set the discharge port damper to the first position, set the forced intake mode to introduce outdoor air into the room by the blower, and set the suction port damper to the first position. And a forced exhaust mode in which the discharge port damper is set at a second position where the blower chamber communicates with the outdoor duct portion by closing the heat source storage chamber, and the room air is exhausted to the outside by the blower. The mode is selectively set.

  Based on a comparison between the set outside air temperature for intake and the outside air temperature, the control unit sets the forced intake mode and uses the outside air when the outside air temperature is lower than the set outside air temperature for intake. It is characterized by having an automatic mode for performing. Further, in the automatic mode, when the indoor temperature is higher than the set outside air temperature for exhaust based on a comparison between the set outside air temperature for exhaust and the room temperature before the intake mode is performed, the forced exhaust mode The forced exhaust mode is performed for a predetermined time. Further, a blowout temperature sensor for detecting a blowout temperature is provided in the vicinity of the blowout outlet of the heat source storage chamber. In the automatic mode, first, when a cold heat source is stored as the heat source in the heat source storage chamber, the suction port A damper is set in the first position, the discharge port damper is set in the first position, and a circulation mode is performed in which room air is circulated by the blower. During this circulation mode, based on the temperature detected by the blowing temperature sensor. When the cooling effect of the cold heat source is lost, the system is shifted to simple cooling by the forced intake mode.

  The present invention is characterized in that a filter is provided in a passage between the discharge port damper and the heat source storage chamber. Further, the heat source storage chamber is provided at a lower portion of the blower chamber, and a case having the inlet damper, the indoor duct portion, and the outdoor duct portion is provided at an upper portion of the blower chamber, A storage shelf in which the heat source is disposed vertically, a drain receiver that is disposed below the storage shelf and receives a drain, and a door for taking in and out the heat source of the storage shelf, and the outlet is formed in the door It is characterized by being.

  According to the present invention, in addition to a circulation mode in which the room temperature is lowered or raised by a heat source, an intake mode and an exhaust mode using outside air are provided, and air conditioning or heating can be performed efficiently and air can be ventilated. Become.

It is a perspective view which shows the multifunctional ventilation fan of this invention. It is also a front view. Similarly, it is a longitudinal sectional view and shows a state of a circulation mode. Similarly, it is a longitudinal sectional view of the main part, showing the state of the intake mode. Similarly, it is a longitudinal sectional view of the main part, showing the state of the exhaust mode. It is a disassembled perspective view which shows an example of a cold heat source. It is a perspective view which shows an example of a cold-heat source rack. It is a control block diagram of a multi-function ventilation fan. It is a flowchart of a multi-function ventilation fan.

  As shown in FIGS. 1 to 3, the multi-function ventilation fan 10 of the present invention includes a vertically long box-shaped case 12, a duct 14 disposed in an upper portion of the case 12, and a duct 14 that communicates with the duct 14. A blower chamber 20 having a mouth damper 16 and a discharge port damper 18, and a heat source storage chamber 24 having a blower outlet 22 disposed at a lower portion of the blower chamber 20 are provided.

  As shown in FIG. 3, the multi-function ventilation fan 10 is fixed by a mounting bracket 25 by fitting a part of the duct 14 into an outside air intake 23 a formed in a wall 23 of the building. A cover 29 having a louver 27 is attached to the outside air inlet 23a so that rain does not blow. The louver 27 is set in the closed position when the multi-function ventilation fan 10 is not used as in a general ventilation fan.

  The duct 14 includes an indoor duct portion 14 a that opens to the indoor 13 and an outdoor duct portion 14 b that communicates with the outdoor 15. The blower chamber 20, the suction port damper 16, and the discharge port damper 18 are disposed between the indoor duct portion 14a and the outdoor duct portion 14b.

  As shown in FIG. 2, a cross flow fan 30 is disposed in the blower chamber 20 with its rotating shaft 30a in the horizontal direction, and is rotated by a drive motor 32 provided at the shaft end. As shown in FIG. 3, the upper part of the blower chamber 20 is open and a suction port 34 is formed. A discharge port 36 is formed between the bottom plate 20 a and the rear plate 20 b of the blower chamber 20.

  A suction port damper 16 is disposed in the suction port 34. The suction port damper 16 includes a plate-shaped damper main body 16b having a mounting shaft 16a and a first actuator 40 that swings and switches the damper main body 16b. The attachment shaft 16 a is rotatably attached to the side plate of the duct 14 at the upper part of the duct 14. The first actuator 40 causes the free end 16c of the damper body 16b to contact the rear end edge 34b of the suction port 34, and the free end 16c to the front end edge 34a of the suction port 34 as shown in FIG. It is selectively switched to the second position in contact.

  As shown in FIG. 3, at the first position of the inlet damper 16, the damper main body 16 b is inclined toward the outdoor duct portion 14 b, blocking communication between the outdoor duct portion 14 b and the blower chamber 20, and the indoor duct portion 14 a The fan room 20 is communicated. As shown in FIG. 4, in the second position, the damper main body 16b is inclined toward the indoor duct portion 14a to block communication between the indoor duct portion 14a and the blower chamber 20, and the outdoor duct portion 14b and the blower chamber 20 are disconnected. To communicate with.

  As shown in FIG. 3, the discharge port damper 18 is disposed at the discharge port 36. The discharge port damper 18 includes a plate-shaped damper main body 18b having a mounting shaft 18a, and a second actuator 42 that swings and switches the damper main body 18b. The mounting shaft 18a is horizontally disposed along the rear end edge 44a of the inlet 44 of the heat source storage chamber 24, and is rotatably attached to the side plate of the outdoor duct portion 14b. Then, the first end where the free end 18c of the damper main body 18b contacts the rear end edge 36b of the discharge port 36 by the second actuator 42, and the free end 16c becomes the front end edge 36a of the discharge port 36 as shown in FIG. It is selectively switched to the second position in contact.

  As shown in FIG. 3, at the first position of the discharge port damper 18, the damper main body 18 b is inclined obliquely upward to block communication between the blower chamber 20 and the outdoor duct portion 14 b, and the blower chamber 20 and the heat source storage chamber 24. To communicate with. As shown in FIG. 5, in the second position, the damper main body 18b is horizontal, the communication between the blower chamber 20 and the heat source storage chamber 24 is blocked, and the blower chamber 20 and the outdoor duct portion 14b are communicated.

  In the heat source storage chamber 24, a filter 52 is disposed at the top, and fine dust in the air blown from above is removed. The filter 52 is set so as to be freely inserted and removed from the mounting opening of the heat source storage chamber 24, and the filter can be periodically cleaned and replaced.

  A heat source storage rack (storage shelf) 54 is disposed below the filter 52. The heat source storage rack 54 is a plate-shaped heat source, for example, one that holds five cold heat sources 56 apart and holds them vertically (vertical direction). Heat is exchanged when air passes through the gaps between the cold heat sources 56, Is cooled.

  An openable / closable door 58 is attached to the indoor side of the heat source storage chamber 24. By opening the door 58, the cold heat source 56 in the heat source storage chamber 24 can be replaced. The door 58 is provided with a louver 60, and the blowing direction can be adjusted. A drain tray 62 is provided below the heat source storage chamber 24 for receiving moisture condensed on the surface of the cold heat source 56 when the cold heat source 56 is used as the heat source. A drain is stored in the drain tray 62 so that it can be replaced before it becomes full. A display shelf 66 is formed in the lower part of the heat source storage chamber 24.

  FIG. 6 is an exploded perspective view showing an example of the cold heat source 56. The cold heat source 56 is obtained by sandwiching a thin plate-shaped cold storage agent (cold storage agent) 67 with a metal plate 68 such as an iron plate or an aluminum plate, and putting them in a storage case 69. The storage case 69 is composed of case bodies 69a and 69b which are divided into upper and lower parts, and are screwed by a flange portion 69c. In addition, a heat dissipating protrusion 69d is formed on the surface of the case main bodies 69a and 69b. As the cooling agent 67, for example, a mixture of a water-soluble resin such as polyvinyl alcohol or polyethylene glycol and water is used. Further, as the heat insulating agent (heat storage agent), for example, a material made of a material capable of high-frequency dielectric heating by a microwave oven, such as a mixture of polyethylene glycol and paraffin, magnesium oxide powder, magnesia brick, paraffin or the like is used.

  A control unit 70 is disposed inside the left side surface of the case 12. A room temperature sensor 74 is disposed in the indoor duct portion 14a, and an outside air temperature sensor 75 is disposed in the outdoor duct portion 14b. Further, a blowing temperature sensor 76 is disposed in the heat source storage chamber 24 near the outlet 22. Temperature detection signals from these sensors 74 to 76 are sent to the control unit 70.

  The control unit 70 includes a microcomputer and includes drivers 71 to 73, a key input unit 77, a display unit 78, a remote control 79, a remote control reception unit 80, and the like, which are written in a storage memory such as a ROM in advance. Each unit 71-80 is controlled based on the program for the operation sequence. The remote controller 79 includes a key input unit 79a, a display unit 79b, a temperature setting unit 79c, and a mode selector 79d, and can input various set temperatures and select various modes. The remote control by the remote control 79 and the remote control receiving unit 80 uses a well-known technique, and detailed description is omitted in this embodiment. The driver 71 drives the drive motor 32, the driver 72 drives the first actuator 40, and the driver 73 drives the second actuator 42.

  The control unit 70 switches to four modes of a circulation mode, an exhaust mode, an intake mode, and an automatic mode in response to an operation command input from the key input unit 77 on the main body side or the key input unit 79a of the remote controller 79. In addition, the control unit 70 sets the exhaust set indoor temperature Tis and the intake set outside air temperature Tos by operation commands from the key input unit 77, the display unit 78, and the remote controller 79. Based on the set temperatures Tis and Tos and the detected temperature signals from the sensors 74 to 76, the switching of the suction port damper 16 and the discharge port damper 18 and the driving of the fan 30 are controlled, and the operation in each mode is performed. Do.

  In the circulation mode, the suction port damper 16 is set to the first position to connect the indoor duct portion 14a and the blower chamber 20, and the discharge port damper 18 is set to the first position to connect the blower chamber 20 and the heat source storage chamber 24. Let The air in the room 13 is introduced into the heat source storage chamber 24 by rotating the fan 30 in this state. And it can cool simply by being cooled by the heat source, for example, the cold heat source 56, and blowing out from the blower outlet 22. The circulation mode is stopped when the outlet temperature Tf is lower by, for example, 1 to 2 ° than the indoor temperature Ti and the cooling effect by the cold heat source 56 is lost. Further, in the winter season, when heating is required, simple heating can be performed by putting a heat insulating agent in the heat source storage chamber 24 and heating and blowing out air.

  In the forced intake mode, the inlet duct 16 is set to the second position to allow the outdoor duct portion 14b and the blower chamber 20 to communicate with each other, and the discharge port damper 18 is set to the first position to set the blower chamber 20 and the heat source storage chamber 24 to each other. Communicate. In this state, the fan 30 is rotated without storing the heat source in the heat source storage chamber 24. Thereby, the air of the outdoor 15 is introduce | transduced into the indoor 13, and replacement | exchange of air is performed efficiently. Further, the outside air temperature to be taken in is set in advance, and the forced intake mode is set when the temperature of the outside air temperature sensor 75 is equal to or lower than the outside air temperature for intake. In this case, simple cooling can be performed by introducing the outside air having a low temperature. Further, in this state, the cooling source 56 may be stored in the heat source storage chamber 24. In this case, it is efficient by cooling the air with the cooling source 56 using outdoor air lower than room temperature. Cooling can be performed.

  In the forced exhaust mode, the suction port damper 16 is placed in the first position to connect the indoor duct portion 14a and the blower chamber 20, and the discharge port damper 18 is placed in the second position to place the blower chamber 20 and the outdoor duct portion 14b. Communicate. By rotating the fan 30 in this state, indoor air can be exhausted to the outside. In particular, when an air conditioner and a multi-function ventilator are installed together, when starting the air conditioner during the summer day, first set the forced exhaust mode and let the indoor air go out, then start cooling with the air conditioner. It can contribute to energy saving.

  In the automatic mode, when the outside air temperature To is lower than the intake outside air temperature Tos based on the comparison between the intake outside air temperature Tos and the outside air temperature To, the forced air intake mode is set and the outside air is used. Perform simple cooling. Further, in the automatic mode, before the intake mode is performed, based on the comparison between the exhaust set indoor temperature Tis and the room temperature Ti, when the indoor temperature Ti is higher than the exhaust set indoor temperature Tis, After the forced exhaust mode is set and this exhaust mode is performed for a certain period of time (for example, when exhaust of about half the volume of the room is completed), the condition determination for the state transition to the intake mode (Tos> To ) To perform the intake mode when the conditions are met.

  In the automatic mode, the intake mode may be performed in a state where, for example, the cold heat source 56 is stored in the heat source storage chamber 24. In this case, since outdoor air having a temperature lower than room temperature can be used and further cooled by the cold heat source 56, the cooling can be performed efficiently. The automatic mode may be automatically performed after the circulation mode is finished.

  In use, as shown in FIG. 3, the outdoor duct portion 14 b is connected to an outside air inlet 23 a provided in the wall 23 of the building. In addition, when there is no outside air intake 23a, you may attach to a window. In this case, the multifunctional ventilation fan 10 is arranged in this open space by opening a window corresponding to the width of the multifunctional ventilation fan. Then, the upper or lower open portion of the multi-function ventilation fan 10 is covered with a shielding plate. Furthermore, when the outdoor duct portion 14b cannot be directly connected to the outside air intake port 23a, the outside air intake port 23a and the outdoor duct portion 14b may be connected using a duct or a tube.

  If simple cooling is desired, the cooling source 56 is stored in the heat source storage chamber 24 and set to the circulation mode. In this state, the suction port damper 16 and the discharge port damper 18 are set to the first position, and air is sucked from the indoor duct portion 14a, sent to the heat source storage chamber 24, and cooled by the cold heat source 56. Cold air is blown out from the air outlet 22. In addition, in the winter season, when it is desired to perform simple heating, the heat source is stored in the heat source storage chamber 24 and set in the circulation mode, whereby the air is warmed by the heat source and the hot air is blown out from the outlet. The cold heat source 56 cools or freezes using a refrigerator that operates all year round regardless of the amount of food. Moreover, a heat source can be utilized for heating by heating for several minutes with a microwave oven.

  As described above, by storing the cold heat source 56 in the heat source storage chamber 24 and performing forced circulation, for example, cold air can be sent and dehumidified when sleeping, and the difficulty of sleeping due to heat can be alleviated. Moreover, since it is possible to perform simple cooling using the outside air after waiting for the outside air temperature to drop, energy is saved. In particular, in the case of Japan, even if it is a tropical night, the possibility of an outdoor temperature higher than the body temperature is very small, and efficient implementation is possible. Moreover, recently, for crime prevention, it is less likely to sleep with the windows open, and energy-saving simple air conditioning with the windows closed can be efficiently implemented.

  In the above-described embodiment, the cross flow fan 30 is used as a blower, but other blowers such as a sirocco fan and an axial fan can be used as the blower. Further, although the swing type is used as the suction port damper 16 and the discharge port damper 18, the air path may be switched by using a slide type or other types instead. Further, the arrangement of the blower chamber 20 and the heat source storage chamber 24 is not limited to the vertical arrangement, and may be a horizontal arrangement or other arrangement.

  Although the heat source is arranged in the vertical direction in the heat source storage chamber 24, the heat source arrangement, the flow path, and the like may be appropriately changed as long as heat can be exchanged by flowing air through the gap between the heat sources. Good.

DESCRIPTION OF SYMBOLS 10 Multi-function ventilation fan 12 Case 14 Duct 14a Indoor duct part 14b Outdoor duct part 16 Suction opening damper 18 Discharge opening damper 20 Blower room 22 Outlet 24 Heat source storage room 30 Cross flow fan 32 Drive motor 34 Inlet 36 Exhaust 40 First Actuator 42 Second actuator 52 Filter 54 Heat source storage rack 56 Cold source 58 Door 60 Louver 62 Drain pan 70 Controller 74 Room temperature sensor 75 Outside air temperature sensor 76 Outlet temperature sensor

Claims (5)

A blower,
A blower chamber having a built-in blower and having a suction port and a discharge port;
A heat source storage chamber that is continuous with the blower chamber through the discharge port, stores a heat source, exchanges heat with the passing air by the heat source, and blows out the air after heat exchange into the room from the outlet,
An inlet damper attached to the inlet and switching the fan chamber to connect to either the indoor duct portion or the outdoor duct portion;
A discharge port damper attached to the discharge port and switching the blower chamber to connect to either the heat source storage chamber or the outdoor duct portion;
An indoor temperature sensor for detecting the indoor temperature;
An outside temperature sensor for detecting the outside temperature;
A set indoor temperature for exhaust and a set outside air temperature for intake can be set, and switching between the suction port damper and the discharge port damper and driving of the blower based on each set temperature and a detected temperature signal from each temperature sensor, And a control unit for controlling
The controller is
When the heat source is stored in the heat source storage chamber, the inlet duct is set at a first position where the blower chamber communicates with the indoor duct portion and the outdoor duct portion is closed, and the outdoor duct portion is closed. A circulation mode in which the discharge port damper is set at a first position where the blower chamber communicates with the heat source storage chamber, and indoor air is circulated by the blower;
The inlet duct is set at a second position where the indoor duct portion is closed and the blower chamber is communicated with the outdoor duct portion, the discharge port damper is set at the first position, and outdoor air is discharged indoors by the blower. Forced air intake mode to be introduced
The suction port damper is set at the first position, the heat source storage chamber is closed, the discharge port damper is set at a second position where the blower chamber communicates with the outdoor duct portion, and indoor air is discharged by the blower. And a forced exhaust mode for exhausting air, and a multi-function ventilation fan that is selectively set to these modes. The controller is
Based on a comparison between the set outside air temperature for intake and the outside air temperature, an automatic mode is set for performing simple cooling using outside air by setting the forced intake mode when the outside air temperature is lower than the set outside air temperature for intake. The multi-function ventilation fan according to claim 1, further comprising: In the automatic mode,
Before executing the intake mode, the forced exhaust mode is set when the indoor temperature is higher than the set external temperature for exhaust, based on a comparison between the set outside air temperature for exhaust and the room temperature. The multi-function ventilation fan according to claim 2, wherein the mode is performed for a predetermined time. A blowing temperature sensor for detecting a blowing temperature is provided near the blowing outlet of the heat source storage chamber,
In the automatic mode,
First, when a cold heat source is stored as the heat source in the heat source storage chamber, the suction port damper is set to the first position, the discharge port damper is set to the first position, and the blower A circulation mode for circulating indoor air is performed, and when the cooling effect of the cooling heat source disappears based on the temperature detected by the blowing temperature sensor during this circulation mode, the mode is shifted to the simple cooling by the forced intake mode. The multi-function ventilation fan according to claim 2. The lower part of the blower room has the heat source storage room, and the upper part of the blower room includes a case having the inlet damper, the indoor duct part, and the outdoor duct part,
The heat source storage chamber includes a storage shelf in which the heat source is arranged vertically, a drain receiver that is disposed below the storage shelf and receives a drain, and a door for taking in and out the heat source of the storage shelf, The multi-function ventilator according to any one of claims 1 to 4, wherein the air outlet is formed in the fan.

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