WO2006051635A1

WO2006051635A1 - Ventilator with thermo-actuator

Info

Publication number: WO2006051635A1
Application number: PCT/JP2005/014393
Authority: WO
Inventors: Fumito Kusakabe
Original assignee: Nippon, Thermostat, Co., Ltd
Priority date: 2004-11-12
Filing date: 2005-08-05
Publication date: 2006-05-18
Also published as: JP4546222B2; JP2006138555A

Abstract

[PROBLEMS] A ventilator with a thermo-actuator, in which a lid body of a ventilation opening is opened and closed by outside air temperature, indoor temperature, etc., is additionally provided with a function with which the direction of the opening and closing can be easily changed according to a use environment. [MEANS FOE SOLVING PROBLEMS] A ventilator (10) has a lid body (30) for opening and closing a ventilation opening (12), a thermo-element (23) as an thermo-actuator actuated by a change in temperature, a retainer member (22) having a cam surface (27a) as a to-be-engaged section for opening and closing the lid body by advancing and retreating movement of a piston (25), and a holder member (24) for pivotally supporting the lid body and holding the retainer member (22) in an advanceable and retreatable manner. When an engagement end (33) provided on the lid body comes to be in contact and engages with a cam surface of the retainer member, the lid body is opened and closed. A first ventilation operation and a second ventilation operation are selectable by changing the direction of contact of the lid body engagement end to the cam surface of the retainer member. In the first ventilation operation, the lid body is normally closed, and is changed from a closed state to an open state. In the second ventilation operation, the lid body is normally opened, and is changed from the open state to the closed state.

Description

Specification

Ventilator with thermoactuator

Technical field

TECHNICAL FIELD [0001] The present invention relates to a ventilator for residential equipment used to open and close a ventilation opening provided on a wall surface of a building in accordance with an outside air temperature or a room temperature, and in particular, a thermoactuator that operates in accordance with a temperature change. The present invention relates to a ventilator with a thermoactuator suitable for use in opening and closing a lid provided at an air vent in accordance with the forward / backward movement of a piston of a thermo element, for example.

Background art

A ventilator using a thermo element is known as a thermoactuator that operates by sensing a change in temperature in order to open and close a lid provided at a ventilation port according to a temperature change, for example, an outside air temperature. In such a ventilator, the lid body is automatically opened and closed by the movement of a piston that moves forward and backward by expansion and contraction of a thermal expansion body such as thermowax provided in the temperature sensing part of the thermoelement. (For example, see Patent Documents 1 and 2).

[0003] Conventionally, in this type of ventilator with a thermoactuator, for example, when the outside air temperature falls below a predetermined value, the lid is closed by the urging force of a spring, and when the temperature rises above a predetermined value, It is configured to control ventilation by operating the temperature sensor and opening it by the advance of the piston. In particular, the thermo element piston described above increases or decreases the advance amount in response to temperature changes, and the lid opening can be controlled accordingly. is there.

[0004] By the way, in the above-described conventional ventilator with a thermoactuator, the lid opening / closing operation is generally set so as to be closed when it is cold and open when it is hot. In contrast to this setting, to change the setting so that it is open when it is cold and closed when it is hot, it is necessary to take measures such as replacing appropriate parts with new parts. Met.

As a mechanism capable of switching the opening / closing direction of such a lid, for example, a thermo A wind direction switching device for air conditioning that uses a mentament as a thermoactuator is known (see, for example, Patent Document 3).

In this conventional device, the wind direction switching blade and the thermo element are integrated and can be easily removed and installed. The optimum angle of the wind direction switching blade is set according to the environmental conditions such as ambient temperature and season. It has a structure that can be done.

Patent Document 1: Japanese Patent Application Laid-Open No. 9 292144

Patent Document 2: Japanese Patent Laid-Open No. 7-234009

Patent Document 3: Japanese Patent No. 3475336

Disclosure of the invention

Problems to be solved by the invention

[0007] However, the switching device for the opening and closing direction employed in the air direction switching device with the thermo element of Patent Document 3 described above has a complicated structure, a large number of components, poor assembly, and air. There were also problems in the structure in which the passage could not be closed, and it was not possible to simply adopt the structure as a ventilation device.

[0008] Therefore, in order to cope with the conventional force according to the usage environment in this type of ventilator, the opening and closing direction of the lid provided at the ventilation opening is switched as necessary, that is, two different specifications, It is desired to take measures to change the direction of operation in the opposite direction, such as when the lid is opened or closed, or when the closing force is opened. In particular, what is needed in the ventilator is to be able to switch the opening and closing direction of the lid without the need to add or change new parts.

It is also desired that such switching can be performed with a simple rearrangement operation.

[0009] Further, in the above-described ventilation device with a thermo element, it is necessary to add an overlift prevention mechanism that prevents the lid from operating more than necessary when the thermo element pushes the piston beyond a predetermined amount. . Without such an overlift prevention function, the movement of the piston is restricted by restricting the rotation, etc., which causes an excessive pressure to be generated inside the thermo element, causing breakage of the piston constituting the thermo element and the diaphragm. This is a force that can cause damage and cause damage to the thermo element. In addition, such an overlift prevention function can damage each part of the lid. It is necessary to prevent it.

[0010] The present invention has been made in view of such circumstances, and the switching of the opening and closing direction of the lid can be easily set by a simple switching operation without using an extra new part. It is possible to adjust the amount of rotation of the lid with arbitrary characteristics, as well as the on-lift function and anti-lift function. Means for solving the problems aimed at obtaining a ventilator with a thermoactuator having a mold structure

In order to meet such an object, a ventilator with a thermoactuator according to the present invention (the invention according to claim 1) includes a lid body that is pivotally supported so as to open and close a ventilation port, A thermoactuator that operates as the temperature changes, a retainer member that forms a link mechanism for opening and closing the lid when the thermoactuator operates, and the lid is rotatable And a holder member that holds the retainer member so that the retainer member can be moved forward and backward. The engagement end provided on the lid member is engaged with the engaged portion of the retainer member to open and close the lid member. By changing the direction in which the engaging end of the lid is engaged with the engaged portion of the retainer member, the lid is always closed, and this closed state force is configured. The first to change to the open state And ventilation operation, normally characterized by any force of the second ventilating operation to change to the open state force closed state to the open state is configured to be selected.

[0012] A ventilator with a thermoactuator according to the present invention (the invention according to claim 2) is the ventilator with a thermoactuator according to claim 1, wherein the lid is changed from a closed state to an open state. The direction and position of installation of the thermoactuator, even when a deviation operation is selected between the first ventilation operation to be performed and the second ventilation operation to be changed to the open state force closed state Is not changed, and the support shaft portion of the lid body is commonly used.

[0013] A ventilator with a thermoactuator according to the present invention (invention according to claim 3) is the ventilator with a thermoactuator according to claim 1 or 2, wherein the engagement end of the lid is , Being provided eccentrically with respect to the spindle portion of the lid. [0014] A ventilator with a thermoactuator according to the present invention (invention according to claim 4) is the ventilator with a thermoactuator according to claim 1, claim 2, or claim 3, wherein the retainer member is The engaged portion of the lid body rotates in response to changes in ambient temperature by the relative movement of the engagement end of the lid body due to the movement of the retainer member accompanying the operation of the thermoactuator. It is formed so that the operation amount can be varied.

[0015] A ventilator with a thermoactuator according to the present invention (invention according to claim 5) is the ventilator with a thermoactuator according to any one of claims 1 to 4, When the ambient temperature exceeds a predetermined temperature, the movement of the lid is locked regardless of the engagement state between the engagement end of the lid and the engaged portion of the retainer member. It is characterized by the provision of a mouth part to be used.

[0016] A ventilator with a thermoactuator according to the present invention (invention according to claim 6) is the ventilator with a thermoactuator according to any one of claims 1 to 5, The retainer member has a cam surface as an engaged portion for opening and closing the lid when the engagement end of the lid is brought into contact with and engaged by the operation of the thermoactuator. By changing the direction in which the engagement end of the lid abuts against the cam surface of the retainer member, either the first ventilation operation or the second ventilation operation is selected. It is characterized by scolding.

[0017] According to the present invention, for example, when the thermoactuator is configured by a thermoelement, the thermal expansion body of the thermoelement facing the outdoor outdoor temperature or the indoor temperature is the outdoor air temperature. When the piston expands due to a temperature rise or the like and pushes out the piston in the protruding direction, the retainer member moves to the side opposite to the holder member. Then, the engagement end (for example, the movable shaft) on the lid side engaged with the engaged portion (for example, the cam surface) of the retainer member moves in accordance with the movement of the engaged portion, and as a result, the lid body. However, the closing operation is performed as the temperature rises such as the outside air temperature.

[0018] Further, when the temperature of the outside air rises and the thermal expansion body expands and the piston pushes the lid body beyond the closed state, the movement of the lid body causes the lid body or the retainer member to move to the lock portion. While being locked and locked to maintain the closed state, the pushing force of the piston may cause the engagement end of the lid body to be disengaged from the engaged portion of the retainer member, or may be in a disengaged state. Alternatively, the engaging end of the lid is engaged, and the retainer member having the engaged portion moves against the elastic supporting force to be absorbed! /.

[0019] According to the ventilator with a thermoactuator having the above-described configuration, the ventilation opening can be opened when the outside air temperature or the room temperature is low and the temperature is cold, and can be closed when the temperature is hot. Furthermore, conversely, it may be required to configure the vent to close when the outside air temperature or room temperature is low and it is cold, and open when it is hot. In such a case, the operating direction and the installation position of the thermoactuator are not changed, that is, the lid is removed from the holder member while the thermoactuator is left as it is, and the mounting direction of the lid on the holder member is reversed. Further, it can be coped with by changing the urging direction by the coil spring.

[0020] In this way, the lid is normally in a state of closing the ventilation opening, and is operated to gradually open the ventilation opening by the action of the thermo element as the temperature rises. At this time, the movement of the piston above the predetermined temperature is transmitted to the retainer member. The opening operation of the lid is locked by the retainer member being locked by the lock portion provided on the fixed portion side. It is like this.

According to such a configuration, the opening / closing operation of the lid can be reversed by simply changing the assembly direction of the lid without changing the components of the ventilator. It is unnecessary and can be assembled easily with force if the cost can be reduced, and the position of the rotating shaft of the lid is the same as the force, so there is no risk of increasing the size of the device and the shape is simple. There are advantages such as.

[0021] Here, as described above, the reason why the ventilation device is normally closed and changed from the closed state to the open state, or is always open and the open state force is changed to the closed state. It is as follows.

For example, when a ventilator that closes when it is cold and opens as it gets hot is installed at a ventilating room that is equipped with a ventilation fan such as a pedestal, the following problems occur. . In other words, when the ventilation fan is activated, the room becomes negative pressure, the window edge has a large gap, etc. The outside air enters, the room warmed by the heater etc. is cooled, and the room temperature cannot be kept constant. This causes a problem. In addition, a ventilation opening provided with such a ventilation device is sometimes opened in the summer or warm weather. If an air conditioner or the like is operated for cooling in this state, extra power will be consumed.

[0022] According to the ventilator with a thermoactuator according to the present invention, since it has a structure in which a closed state and an open state can be appropriately selected when it is cold, the installation position of the ventilation port provided with such a ventilator is arbitrary. Can be selected. For example, even if a ventilator that is open when it is cold is provided on the side of a ventilation fan in a kitchen or the like, the outside air can be exhausted in the shortest distance, so that the room temperature can be kept constant. Further, since the above vent can be closed in summer, an energy saving effect can be achieved.

In other words, in the ventilator with a thermoactuator according to the present invention, the thermosensitive temperature of the thermoactuator, which is a thermoactuator, can be set indoors or outdoors, and can be switched between a cold, sometimes closed state, and an open state when cold. It can be easily done and can be selected as appropriate.

The invention's effect

[0023] As described above, according to the ventilator with a thermoactuator according to the present invention, the open / close direction of the lid provided at the ventilation port is set to the open state or the closed state, or the closed state force is set to the open state. Thus, switching to an arbitrary direction can be performed very easily. In other words, the operating direction and installation position of the thermoactuator are fixed, and the opening and closing direction as described above can be arbitrarily selected simply by changing the assembly position of the lid to the drive unit. Since there is no need to add, etc., and a simple assembling work is sufficient, there are various excellent effects such as low cost.

[0024] In addition, the support shaft portion, which is the rotation shaft of the lid, can be used in common regardless of the direction in which the open / close state changes, and its position does not need to be changed by switching. The body can be downsized and the shape is simple.

Furthermore, even during the hono-lift, it is possible to cope with the urging force of the lock to the lock portion provided on the holder member and the coil spring provided on the retainer member.

[0025] Further, according to the present invention, in the setting that changes from the open state to the closed state as the temperature rises, the opening adjustment function as described above also has a fire prevention function. For example, opening a ventilation opening with a small setting change that does not increase more than necessary. When closing, it can be opened and closed finely, and the required flow characteristics according to temperature can be easily obtained. Moreover, the opening degree adjusting function having the fire prevention function according to the present invention can be performed very easily even when the fire prevention function is activated due to some external factor and becomes fully closed.

BEST MODE FOR CARRYING OUT THE INVENTION

1 to 6 show a first embodiment of a ventilator with a thermoactuator according to the present invention. In this embodiment, a ventilator that ventilates between the room interior and the outdoors is shown. Therefore, the case of a so-called butterfly nore type using a pair of lids (blades) will be described.

Also, in these figures, FIGS. 1 to 4 show the case where the lid is normally open and changes to an open state force closed state with a temperature change such as an outside air temperature or a room temperature. Fig. 6 shows the case where it is normally closed, and changes from closed to open as the temperature changes.

In these drawings, as shown in FIGS. 1 to 4, the lid is normally in an open state, and when the temperature changes, here, when the outside air temperature rises, the open state force changes to the closed state. The configuration of is described below.

That is, the ventilator with a thermoactuator denoted as a whole by reference numeral 10 includes a cylindrical body 11 having a flange 11a as shown in FIGS. 1 and 2, and the inside of the cylindrical body 11 has a vent hole. 12

[0028] A cylindrical receiving portion 13 held in the center by a plurality of radial ribs 14 is formed at an end on the indoor side in the vent 12 of the cylindrical body 11, and a thermoactuator described later is used. It is an assembling part of the ventilation drive part 20 including a certain thermo element 23. Indoor and outdoor ventilation is provided through openings formed between the radial ribs 14. The rib 14 is provided with a filter 14a so that dust and impurities in the air passing through the cylindrical body 11 can be removed.

The ventilation drive unit 20 opens and closes the lids 30 and 30 by the operation of the thermo element 23 by being elastically supported by the coil spring 21 incorporated in the cylindrical receiving unit 13 and the coil spring 21. Retainer member 22 constituting a link mechanism for operation, and the retainer A holder member 24 assembled to the cylindrical receiving portion 13 side in a state where the member 22 and the thermo element 23 are held. The holder member 24 has a locking claw 24a, and the locking claw 24a is locked to a locking groove 24b formed on the outside of the cylindrical receiving portion 13 so that the component parts are held in a state of being held. It can be assembled to the cylindrical receiving part 13.

[0030] As shown in Fig. 2, the retainer member 22 has cam portions 27, 27 formed to bulge on both the left and right sides, and the cam portions 27, 27 are arranged on the holder member 24 side. Surface force It is configured to form cam surfaces 27a and 27a which are engaged portions corresponding to the movable shaft 33 which becomes an engagement end of the lid 30 which will be described later. These cam surfaces 27a, 27a are formed as inclined surfaces that are inclined obliquely toward the cylindrical receiving portion 13 toward the outer end of the main body partial force of the retainer member 22.

In addition, these cam portions 27 and 27 are used to advance and retract a piston 25 that constitutes a thermo element 23 to be described later in a slit portion 13a and 13a formed on the outer peripheral portion of the cylindrical receiving portion 13 in a thread tightening state. At the same time, it is in a state where it can be moved forward and backward.

[0031] As is well known, the thermo element 23 has a thermal expansion body such as wax that expands and contracts under the influence of temperature, and the movement of the piston 25 that is advanced and retracted by expansion or contraction of the thermal expansion body. The retainer member 22 is configured to move forward and backward against the urging force of the coil spring 21.

[0032] In the figure, 30 and 30 are lid bodies constituting a so-called butterfly valve, each of which has a semicircular shape and opens and closes the vent hole 12. The lid body 30 is the left of the holder member 24, It is pivotally supported via fixed shafts 31 and 31 at the tip of an arm portion extending at a predetermined interval to the right. These fixed shafts 31, 31 are provided at the upper and lower edges of the U-shaped notches formed in the lid body 30, and the torsion springs 32 wound around the fixed shafts 31 (Fig. 2, The lid 30 is urged in the direction of closing by FIG.

Further, as shown in FIGS. 2, 3, and 4, the lid 30 has a movable shaft 33 in an eccentric state with respect to the fixed shaft 31 at a portion close to the fixed shaft 31. Yes. In this embodiment, the movable shaft 33 is provided at the tip of an arm portion extending from the lid body 30 and selectively contacts the cam surface 27a of the cam portion 27 in the assembled state. Constructed as an end The

Here, the right lid 30 in FIG. 2 shows a closed state, and the left lid 30 in the figure shows an open state. It goes without saying that they operate in conjunction with each other so as to be in an open state or a closed state. Note that in FIG. 2, the force in which the positional relationship between the fixed shaft 31 and the movable shaft 33 in the left and right lid bodies 30 is reversed. 6 is for explaining the mounting posture when the opening / closing direction of the lid 30 described in FIG. 6 is reversed. In the lid 30 on the left side in the case of FIGS. 1 to 4, the movable shaft 33 is a lid. It is located so as to protrude from the front side of the body.

[0035] As shown in Figs. 2 and 3 (d), the left and right side portions of the holder member 24 are biased to the indoor side with respect to the fixed shaft 31 of the lid 30 when the lid 30 is closed. A lock portion 35 is provided to be locked when the centering movable shaft 33 contacts. These locking parts 35 are for restricting further rotation of the lid 30 with the ventilation port 12 closed, and are configured to absorb the movement of the lid 30 during the onolift. Being! RU

[0036] In the above configuration, the holder member 24 is assembled to the receiving portion 13 in the ventilation port 12 with the thermo element 23, the piston 25, the retainer member 22, and the coil spring 21 installed therein, and the ventilation drive unit 20 is assembled, and the lid 30 is pivotally supported on the holder member 24 by the fixed shaft 31, and the movable shaft 33 is brought into contact with the cam surface 27a of the cam portion 27 of the retainer member 22 by the urging force of the torsion spring 32. The state shown by the solid line in FIG. 1, the state shown in FIG. 3 (a) and FIG. 4 (a).

[0037] In this state, when the thermal expansion body of the thermo-element 23 facing the outdoor outdoor temperature expands due to a rise in the outdoor air temperature and pushes the piston 25 in a protruding direction, the retainer member 22 becomes a coil spring. Moves to the side opposite to the holder member 24 against the urging force of 21. Then, the movable shaft 33 that is in contact with the cam surface 27a of the cam portion 27 is moved into the cam as shown in FIGS. 3 (b), 3 (c), 4 (b), and 4 (c). According to the movement of the surface 27a, the torsion spring 32 moves, and as a result, the lid 30 is closed according to the outside air temperature.

[0038] Further, when the outside temperature rises and the thermal expansion body expands and the piston 25 is pushed beyond the closed state of the lid body 30, as shown in FIGS. 3 (d) and 4 (d), The movable shaft 33 reaches a position where it is detached from the cam surface 27a, and is in a non-engaged state and is locked by being brought into contact with a lock portion 35 provided on the holder member 24, while maintaining a closed state. The extrusion of the retainer It is absorbed by the movement of the member 22.

[0039] Further, as in this embodiment, when the temperature is equal to or higher than a predetermined temperature, the engagement of the movable shaft 33 with the cam surface 27a, that is, the contact state is released, and the lid 30 is closed. It will be possible to cope with an emergency such as a fire. That is, when the thermo-element 23 senses an abnormal temperature, the retainer member 22 is moved by the movement of the piston 25, and the movable shaft 33 reaches the position where it is detached from the cam surface 27a and is in a non-contact state, the ventilation port 12 is completely closed so that it can provide fire protection in the event of a fire. This is because by closing the ventilation opening 12, the passage of the flame can be blocked and the spread of fire can be prevented.

[0040] Here, in this embodiment, the cam surface 27a of the above-described cam portion 27 controls the rotation operation for opening and closing the lid body 30 by the movement of the thermoelement 23, and is optional. It is good to comprise so that rotation amount can be controlled. That is, when the lid 30 is closed from the open state, it can be configured so that it closes slowly in a low temperature state, closes suddenly as the temperature rises, or has the opposite characteristics. In short, it is only necessary to select the cam surface shape.

[0041] According to the ventilator with a thermoactuator 10 configured as described above, the force that can open the vent 12 when the outside air temperature is low and it is cold and close it when the outside air is hot. It may be required to be configured to close the vent 12 when it is cold and cold and open when it is hot.

FIG. 5 and FIG. 6 show the case where the opening / closing direction of the lid 30 is reversed with respect to FIGS. 1 to 4 described above.

That is, in the mounting state shown in FIGS. 1 to 4, the lid 30 is removed from the holder member 24, and the mounting direction of the lid 30 on the holder member 24 is reversed as shown in FIGS. In addition, contrary to the examples of FIGS. 1 to 4 described above, the urging direction by the coil spring 32 is such that, with the lid 30 closed, the movable shaft 33 is rotated around the fixed shaft 31 and the outdoor side force is also directed indoors. The direction to be rotated, that is, the clockwise direction in FIG.

5 and FIG. 6, as described above, the mounting position of the lid 30 in FIG. 2 is changed to the movable shaft 33 as in the left lid 30 in FIG. It is only necessary that the protrusion protrudes from the front surface side of the lid 30. At this time, the right lid 30 in FIG. Needless to say, the orientation is opposite to the illustrated orientation.

In this manner, as shown in FIG. 5 and FIG. 6, the lid 30 is normally in a state of closing the vent 12 and the thermoelement 23 acts as the temperature rises, as shown in FIG. As shown in (c) and (c), the air vent 12 is gradually opened.

At this time, as shown in FIG. 6 (d), the movement of the piston 25 exceeding the predetermined temperature is transmitted to the retainer member 22. The opening operation of the lid 30 is applied to the lock portion 35 of the movable shaft 33. It is locked by contact.

[0045] According to such a configuration, the opening / closing operation of the lid 30 can be reversed simply by changing the thread attachment direction of the lid 30 while leaving the components of the ventilation device 10 including the thermo element 23 unchanged. Since no new parts are required and the cost can be reduced, it is easy to assemble without force, and the position of the rotating shaft 31 etc. of the lid 30 is the same. There is an advantage that the size of 10 is not increased and the shape is simple.

Here, in the above-described embodiment, the thermosensitive part of the thermo-element 23 incorporating the thermal expansion body has a structure installed on the outdoor side from the fixed shaft 31 of the lid 30. However, the fixed shaft 31 It may be installed indoors.

FIGS. 7 to 12 show a second embodiment of the present invention. In these drawings, the same or corresponding parts as those in the ventilator 10 according to the embodiment described above are denoted by the same reference numerals. Is omitted. Also, in these drawings, FIGS. 7 to 10 show the case where the lid 30 is normally closed and this closing force is also changed to the open state, and FIGS. 11 and 12 are the lid 30 normally open. The case where the open state force is changed to the closed state is shown.

FIG. 8 also shows the case where the right lid 30 in the figure is in the closed state, and the case where the left lid 30 in the figure is in the open state, as in FIG. 2 described above. However, it goes without saying that the lid bodies 30 and 30 actually operate in conjunction with each other so that they are simultaneously opened or closed. Further, in FIG. 8 as well, the force in which the positional relationship between the fixed shaft 31 and the movable shaft 33 in the left and right lid bodies 30 is reversed. 12 shows the mounting posture when the opening and closing direction of the lid 30 described in 12 is reversed. In the lid 30 on the left side in the case of FIGS. 7 to 10, the movable shaft 33 is located in front of the lid. It is located so as to protrude from the surface side. [0049] According to the ventilator 10 with the thermoactuator in this embodiment, the thermostat which is a thermoactuator among the parts incorporated between the cylindrical receiving part 13 and the holder member 24 in the ventilation drive part 20 is provided. Contrary to the above-described embodiment, the element 23 and the piston 25 are assembled so as to push the piston 25 toward the holder member 24 side.

In such a configuration, for example, the temperature inside the room can be detected by the thermo element 23, and the vent 12 can be controlled to be opened and closed as the temperature rises.

In the figure, reference numeral 40 denotes a retainer member in this embodiment. The retainer member 40 has bifurcated cam portions 41, 41 on the left and right sides, and the inside of the bifurcated cam portion 41 is the lid 40. The cam surface 41a is formed so as to contact the movable shaft 33 provided integrally therewith.

The movable shaft 33 on the lid body 30 side is located on the outdoor side of the fixed shaft 31 with the lid body 30 closed so as to form a crank shape with the fixed shafts 31 and 31 provided on the lid body 30. Are integrated. Of course, the shafts 31 and 33 are formed so that the shaft centers are shifted. Note that the torsion spring 32 in the first embodiment is not necessary.

[0051] The thermo element 23, the piston 25, and the retainer member 40 are assembled in a state in which the coil spring 21 is interposed between the thermo element 23, the piston 25, and the retainer member 40 and is held by the holder member 24. In the figure, 45 is a coil spring that elastically supports the retainer member 40 on the holder member 24 side.

[0052] Further, as shown in FIG. 9 (d), the tip of the cylindrical receiving portion 13 is a lock portion 43 for locking the retainer member 40, and an onolift absorbing mechanism for controlling the push-out amount of the piston 25. It is the place which constitutes.

[0053] In the above configuration, the holder member 24 and the coil spring 21 are assembled to the receiving portion 12 in the ventilation port 12 with the thermo element 23, the piston 25, the retainer member 40, and the coil spring 45 installed therein. In addition to assembling the ventilation drive unit 20, when the lid 30 is pivotally supported on the holder member 24 by the fixed shaft 31, and the movable shaft 33 is brought into contact with the cam surface 41a of the bifurcated cam portion 41 of the retainer member 40, The state shown by the solid line in FIG. 7, the state shown in FIG. 9 (a) and FIG. 10 (a).

In this state, when the thermal expansion body force of the thermoelement 23 exposed to the room temperature expands due to the temperature rise and pushes the piston 25 in the protruding direction, the retainer member 40 and the thermoelement 23 Relative to the anti-holder member 24 side against the biasing force Move to. Then, the movable shaft 33 in contact with the cam surface 41a of the bifurcated cam portion 41 is shown in FIGS. 9 (b), 9 (c), 10 (b), and 10 (c). As a result, the lid body 30 moves relatively according to the movement of the cam surface 41a, and as a result, the lid 30 also opens the closed state force according to the room temperature.

[0055] Further, when the indoor temperature rises and the thermal expansion body expands and the piston 25 is pushed out beyond the open state of the lid body 30, as shown in FIG. The open state is maintained by contacting and locking to the lock portion 43 on the cylindrical receiving portion 13 side. At this time, even if the piston 25 is further pushed out, the retainer member 40 maintains its state, and the inner thermo element 23 moves against the urging force of the coil spring 21 so that the movement amount is maintained. Will be absorbed. The retainer member 40 always moves following the movement of the thermo element 23 due to the urging force of the coil spring 45, and the retainer member 40 is locked at the time of overlift, and the retainer member 40 is moved by the further movement of the thermo element 23. The coil spring 45 is configured to absorb 40 movements! RU

Note that the cam surface 41a of the bifurcated cam portion 41 described above controls a pivoting operation for opening and closing the lid 30 by the movement of the thermo element 23, and an arbitrary amount of pivoting operation is controlled. It should be configured so that it can be controlled. That is, when the lid 30 is closed from the open state, it can be configured so that it closes slowly in the low temperature state and closes suddenly as the temperature rises, or has the opposite characteristics. In short, the cam surface shape may be arbitrarily selected and formed.

In this embodiment, the cam surface 41a is formed on the bifurcated cam portion 41, so that it is not necessary to urge the lid 30 in the direction of contact with the cam surface! Not limited to this! Needless to say! / ヽ.

[0057] According to the configuration in the above embodiment, in the ventilator 10 with the thermoactuator, the force that can close the ventilation opening 12 when the room temperature is low and it is cold and open it when it is hot. Conversely, it may be required that the vent 12 be opened when the room temperature is cold and cold, and closed when it is hot.

FIGS. 11 and 12 show a case where the opening / closing direction of the lid 30 is reversed from that of FIGS. 7 to 10 described above. That is, in the above-described attachment state shown in FIGS. Remove the Noreda rod 24, and as shown in Fig. 11 and Fig. 12, the mounting direction of the lid 30 to the holeder rod 24 is positioned more indoor than the fixed shaft 31 with the lid 30 closed. The direction may be used.

In other words, as shown in FIGS. 11 and 12, as described above, the mounting position of the lid 30 in FIG. 8 is changed to the movable shaft 33 as in the left lid 30 in FIG. May be positioned so as to protrude from the rear surface side of the lid 30. At this time, it is the same as the case of FIG. 2 in the first embodiment described above that the lid 30 on the right side in FIG.

[0059] In this manner, as shown in FIGS. 11 and 12, the lid 30 is normally in a state in which the ventilation opening 12 is closed, and the thermoelement 23, which is a thermoactuator, works as the temperature rises. Thus, as shown in FIGS. 12 (b) and 12 (c), the air vent 12 is gradually opened. At this time, as shown in FIG. 12 (d), the movement of the piston 25 above the predetermined temperature is transmitted to the thermo-element 23.The opening operation of the retainer member 40 and the lid 30 is also applied to the lock part 43. The retainer member 40 is locked by contact.

[0060] Even with such a configuration, as in the above-described embodiment, the lid body 10 can be changed by simply changing the assembly direction of the lid body 30 without changing the components of the ventilation device 10 including the thermoelement 23. The opening / closing operation of 30 can be reversed, no new parts are required, it is easy to assemble by force if the cost can be reduced, and the position of the rotating shaft 31 etc. of the lid 30 is the same Therefore, there is a risk that the apparatus 10 is not enlarged and the shape is simple.

[0061] Here, the temperature sensing part of the thermo-element 23 containing the thermal expansion body is installed on the indoor side of the fixed shaft 31 of the lid 30. Install it outside.

FIG. 13 shows a modification of the ventilation device according to the present invention.

That is, in the first and second embodiments described above, the case where the thermo element 23 is used as the activator serving as the ventilation drive unit 20 of the ventilator 10 has been described. However, instead of the thermo element 23, the thermo actuator is used. A shape memory alloy can be used as a user, and in addition to this, a heating element can be provided, and the lid 30 can be opened and closed arbitrarily by external control. You may comprise.

[0063] This embodiment will be described based on the structure of the ventilation drive unit 20 used in the second embodiment described above. In this embodiment, the movable body 60 held in the cylindrical receiving portion 13 is provided. It has. The retainer member 40 is physically assembled to the movable body 60. The movable body 60 and the retainer member 40 are inertially supported by the coil spring 21 and the coil spring 45.

[0064] In such a configuration, the coil spring 21 on the cylindrical receiving portion 13 side or the coil spring 45 on the holder 24 side is formed of a shape memory alloy, and expands and contracts at an ambient temperature such as the outside air temperature or the room temperature. With this configuration, the lid 30 can be controlled to open and close at an arbitrary opening. In addition, it may be formed of biometal or the like instead of the shape memory alloy.

[0065] Further, in the structure described above, a portion adjacent to the coil spring 21 on the cylindrical receiving portion 13 side or the coil spring 45 on the holder 24 side formed of a shape memory alloy is indicated by an imaginary line in FIG. As described above, when the heating element 62 or 61 such as a PTC heater is provided, there is an advantage that the opening / closing control of the lid 30 can be further arbitrarily performed. That is, if the heat generating element 62 or 61 is configured to be able to control heat generation using a controller provided in the vicinity of the ventilation device 10 or a controller operated remotely from the room, the thermo element can be used. In the same way, the opening and closing control of the ventilation port can be performed arbitrarily in combination with the ambient temperature.

[0066] It should be noted that the heating elements 62 and 61 may be any electric heater, for example, an arcuate heater in which a chrome wire is wound, or a PTC heater at an appropriate position near the activator. It may be affixed to the surface, or it may be a shape memory alloy that self-heats by passing an electric current such as biometal.

[0067] According to such a configuration, the opening / closing control of the lid of the ventilator can be arbitrarily performed in spite of the minimum number of components, and the ventilator with the thermo element described above 10 Ono-lift absorption function is not required, and the heating element 62, 61 is energized, so that the actuator is sensitive to temperature and displacement, and the response speed until the lid 30 is opened and closed is increased. is there. It should be noted that the present invention is not limited to the structure described in the above-described embodiment, and it goes without saying that the shape and structure of each part can be appropriately modified and changed.

For example, the member for opening and closing the ventilation port 12 is not limited to the shape of the butterfly valve type lid 30 in the above-described embodiment, and it goes without saying that various modifications can be considered.

[0069] Further, the shape of the cam surfaces 27a, 41a of the cam portions 27, 41 with which the movable shaft 33 abuts is not limited to the shape described in the above embodiment, and may be suitable depending on the field or region used. The opening degree of the lid 30 can be arbitrarily adjusted.

Further, the installation direction of the thermo element 23 and the lid 30 can be arbitrarily changed depending on whether the outside air temperature or the room temperature is sensed.

[0070] Further, in the ventilator 10 with a thermoactuator according to the present invention, when a heating element such as a PTC heater is provided in a portion close to the temperature sensing portion of the thermoelement 23 provided as a thermoactuator, the above figure As in the case of 13, the opening / closing control of the lid 30 can be performed arbitrarily in combination with the case of ambient temperature. In other words, if this heating element can be controlled by using a controller provided near the ventilation device 10 or a controller remotely operated from the inside of the room, the opening and closing control of the ventilation port can be controlled according to the ambient temperature. It can be done arbitrarily in combination.

The heating element may be an electric heater, for example, a chrome wire wrapped around it, or a PTC heater may be attached at an appropriate position, or A shape memory alloy that self-heats when an electric current is passed may be used.

In the above-described embodiment, the case where the thermoactuator-equipped ventilator 10 according to the present invention is used for a home facility has been described. However, the present invention is not limited to this, and the ventilator is used in various fields. Needless to say, it can be used as.

Brief Description of Drawings

FIG. 1 shows a first embodiment of a ventilator with a thermoactuator according to the present invention, (a) is a schematic cross-sectional view, and (b) is a schematic front view.

FIG. 2 is a schematic exploded perspective view of the ventilator with a thermoactuator in FIG. 1. [FIG. 3] (a), (b), (c), and (d) are enlarged views of the main part for explaining the opening and closing operation of the lid which is the main part in the ventilator of FIG.

[FIG. 4] (a), (b), (c), and (d) are diagrams for explaining the relationship between the movable shaft and the cam surface of the cam portion that characterize the present invention.

FIG. 5 shows a case where the opening and closing direction of the lid in the ventilator with a thermoactuator in FIG. 1 is reversed, (a) is a schematic sectional view, and (b) is a schematic front view.

[Fig. 6] (a), (b), (c), and (d) are enlarged views of the main part for explaining the opening and closing operation of the lid, which is the main part in the ventilator of Fig. 5.

FIG. 7 shows a second embodiment of a ventilator with a thermoactuator according to the present invention, in which (a) is a schematic sectional view and (b) is a schematic front view.

[8] FIG. 8 is a schematic exploded perspective view of the ventilator with the thermoactuator of FIG.

[FIG. 9] (a), (b), (c), and (d) are enlarged views of the main part for explaining the opening and closing operation of the lid, which is the main part in the ventilator of FIG.

[FIG. 10] (a), (b), and (c) are diagrams for explaining the relationship between the movable shaft and the cam surface of the cam portion that characterize the present invention.

FIG. 11 shows a case where the opening and closing direction of the lid in the ventilator with a thermoactuator in FIG. 7 is reversed, (a) is a schematic sectional view, and (b) is a schematic front view.

[FIG. 12] (a), (b), (c), and (d) are enlarged views of the main part for explaining the opening / closing operation of the lid which is the main part in the ventilation device of FIG.

[13] FIG. 13 is a schematic view showing a modification of the ventilator with a thermoactuator according to the present invention.

Explanation of symbols

10 ··· Ventilator with thermoactuator, 11… Cylinder, 12 ··· Ventilation port, 13 ··· Cylindrical receiver, 20 ··· Ventilation drive, 21 ··· Coil spring, 22 ··· Retainer member, 23 ... Thermo element (thermo actuator), 24 ... Holder member, 27 ... Cam part, 27a ... Cam surface, 30 ... Lid (opening / closing member), 31 ... Fixed shaft, 32 ··· Torsion spring, 33 ··· Movable shaft, ·····················································

Claims

The scope of the claims

[1] a lid pivotally supported so as to open and close the ventilation opening;

A thermoactuator that operates as the temperature changes,

A retainer member constituting a link mechanism for opening and closing the lid by the operation of the thermoactuator;

A holder member that pivotally supports the lid body and holds the retainer member so as to be capable of moving forward and backward.

By engaging an engagement end provided on the lid with an engaged portion of the retainer member, the lid is configured to open and close,

By changing the direction in which the engagement end of the lid is engaged with the engaged portion of the retainer member, the lid is always closed, and the first change is made to change to this closed state force open state. Between the air operation and the second ventilation operation that is always open and changes the open state force to the closed state! apparatus.

[2] In the ventilator with a thermoactuator according to claim 1,

Regardless of whether the first ventilation operation for changing the lid body to the closed state open state or the second ventilation operation for changing the open state force to the closed state is selected, the thermostat is selected. A ventilating apparatus with a thermoactuator, characterized in that the operating direction and installation position of the actuator are not changed, and the support shaft portion of the lid is used in common.

[3] In the ventilator with a thermoactuator according to claim 1 or claim 2,

The ventilator with a thermoactuator is characterized in that the engaging end of the lid is provided eccentrically with respect to the support shaft portion of the lid.

[4] In the ventilator with a thermoactuator according to claim 1, claim 2 or claim 3,

The engaged portion of the retainer member has a lid body corresponding to a change in ambient temperature by the relative movement of the engagement end of the lid body due to the movement of the retainer member accompanying the operation of the thermoactuator. A ventilator with a thermoactuator, characterized in that the amount of pivoting movement can be varied.

[5] A ventilator with a thermoactuator according to claim 1, which is described in claim 1 and in claim 4, and a displacement force ¾ [this; i l /,

When the ambient temperature exceeds a predetermined temperature, the movement of the lid is locked regardless of the engagement state between the engagement end of the lid and the engaged portion of the retainer member. A ventilator with a thermoactuator, characterized by a lock.

[6] A ventilator with a thermoactuator according to claim 1, claim 5, shift force 1 according to claim 1 ¾ [this; i l /,

The retainer member has a cam surface as an engaged portion for opening and closing the lid by engaging and engaging the engagement end force S of the lid by the operation of the thermoactuator,

By changing the direction in which the engagement end of the lid comes into contact with the cam surface of the retainer member, either the first ventilation operation or the second ventilation operation is selected. V, Ventilator with thermoactuator