JP7292243B2 - ventilator - Google Patents

Description

The present disclosure relates to a ventilator for ventilating indoor air.

Some ventilators are installed in a space above the ceiling or the like and ventilate through a duct. One of them is a heat exchange type ventilator that supplies air and exhausts air at the same time and exchanges heat between the supply air flow and the exhaust air flow. Patent Literature 1 discloses a heat-exchange ventilator provided with a quadrangular prism-shaped heat exchanger substantially in the center of a rectangular parallelepiped box. In the heat-exchange ventilator disclosed in Patent Document 1, a quadrangular prism-shaped heat exchanger with a rhombic bottom is installed in a box such that the diagonals of the bottom of the heat exchanger are aligned vertically and horizontally. The heat exchanger can be put in and taken out of the box by means of guide rails in a direction perpendicular to the bottom surface. The inside of the box is divided into four compartments by the four ridges formed by the intersection of two of the four sides other than the bottom coming into contact with the constituent elements of the box inside the box. classified. Two of the four sections are each provided with an air supply fan and an exhaust fan. A heat exchanger exchanges heat between an air supply flow from the supply air blower and an exhaust air flow from the exhaust air blower.

In recent years, in addition to improving the ventilation capacity and reducing power consumption, which are the basics of ventilation equipment, the performance of ventilation equipment has been improved by installing a temperature sensor in the ventilation equipment and performing optimal control according to temperature fluctuations. is being done. In the heat exchange ventilator described in Patent Document 1, the temperature sensor is held in a case, and the case is screwed to the product exterior sheet metal with a sensor fixing screw, thereby fixing the temperature sensor to the box.

JP 2009-293880 A

However, in the structure based on the heat exchange type ventilation device described in Patent Document 1, a screw tightening operation is required when fixing the temperature sensor to the box body, and when replacing the temperature sensor, the screw for fixing the sensor is required. had to be removed. In other words, there is a problem that a tool is required to attach or detach the temperature sensor to or from the heat exchange type ventilator, which is troublesome for the operator.

The present disclosure has been made in view of the above, and an object thereof is to provide a ventilator in which a sensor can be attached or removed without using tools.

In order to solve the above-described problems and achieve the object, the present disclosure provides a ventilation device for ventilating a room by flowing an air flow, which is a flow of air, between a room and the outside through an air path, An air quality sensor for detecting the state of air quality of an airflow flowing through an air passage, a barrier section provided to partially block the air passage, and a wall surface of the barrier section detachably fitted to the air quality sensor. and a sensor holding member for holding . The sensor holding member is fitted to the barrier part so that the surface where the air quality sensor is exposed faces the downstream side of the air flow.

Advantageously, the present disclosure allows the sensor to be installed or removed without the use of tools.

1 is a perspective view showing an example of the configuration of a heat exchange ventilator according to Embodiment 1. FIG. 1 is a cross-sectional view schematically showing an example of the configuration of a heat exchange ventilator according to Embodiment 1. FIG. FIG. 2 is a perspective view showing an example of an arrangement state of sensors in the heat exchange ventilator according to Embodiment 1. FIG. Enlarged perspective view of the vicinity of the sensor in FIG. Partial cross-sectional view near the sensor in the heat exchange ventilator according to Embodiment 1 Enlarged cross-sectional view of the vicinity of the sensor in FIG. Perspective view showing an example of the configuration of the sensor mounting wall A perspective view showing an example of a configuration of a sensor holding member to which a sensor is attached. Diagram showing an example of a state in which the sensor is attached to the sensor mounting wall

Below, a ventilation device according to an embodiment of the present disclosure will be described in detail based on the drawings.

Embodiment 1.
A ventilator is a device that ventilates a room by causing an airflow, which is a flow of air, to flow between the room and the outside through air paths. In the following, a heat exchange type ventilation system including a heat exchanger will be described as an example of the ventilation system.

FIG. 1 is a perspective view showing an example of the configuration of a heat exchange ventilator according to Embodiment 1. FIG. The heat exchange ventilator 100 according to Embodiment 1 is a ceiling-embedded heat exchange ventilator that is installed in the space above the ceiling and ventilates the room by air supply and exhaust through a duct. The heat exchange type ventilator 100 can ventilate the room while exchanging heat between the supply air flow and the exhaust air flow. A heat exchange type ventilator 100 includes a housing 10 forming an outer shell. The heat exchange ventilator 100 is a rectangular parallelepiped hexahedron having a top surface, a bottom surface 12, a front surface 13, a rear surface 14, an indoor side surface 15 and an outdoor side surface 16 (not shown). In addition, below, the direction which connects the top surface and the bottom surface 12 of the housing|casing 10 is called an up-down direction. The direction connecting the front surface 13 and the rear surface 14 is referred to as the front-rear direction. The direction connecting the indoor side surface 15 and the outdoor side surface 16 is referred to as the left-right direction. The up-down direction, the front-rear direction, and the left-right direction are orthogonal to each other.

FIG. 2 is a cross-sectional view schematically showing an example of the configuration of the heat exchange ventilator according to Embodiment 1. FIG. The housing 10 includes an air supply inlet 21 that takes in air from the outside, an air supply outlet 22 that supplies air from the outside into the room, an exhaust air inlet 23 that takes in air from the room, and an air in the room that is exhausted to the outside. It has an exhaust outlet 24 that The air supply inlet 21 and the exhaust outlet 24 are provided on the outdoor side surface 16 . The supply air outlet 22 and the exhaust air inlet 23 are provided on the side surface 15 on the indoor side.

Inside the housing 10, an air supply ventilation path 10A and an exhaust air ventilation path 10B are provided. The supply air ventilation path 10A is an air path for supplying the outdoor air taken in from the supply air inlet 21 to the room from the supply air outlet 22 . The exhaust air passage 10B is an air passage for discharging the indoor air taken in from the exhaust suction port 23 to the outside from the exhaust air outlet 24 . A partition wall 27 that separates the supply air passage 10A and the exhaust air passage 10B in the vertical direction is provided on the indoor side surface 15 side of the central portion in the left-right direction in the housing 10 . Further, a partition wall 28 is provided on the side of the outdoor side surface 16 relative to the central portion in the left-right direction inside the housing 10 to divide the supply air ventilation path 10A and the exhaust air ventilation path 10B in the vertical direction.

The heat exchange type ventilator 100 is provided across the supply air ventilation path 10A and the exhaust air ventilation path 10B, and heat is exchanged between the supply air flow 110 flowing through the supply air ventilation path 10A and the exhaust air flow 120 flowing through the exhaust air ventilation path 10B. A heat exchanger 25 is provided for exchanging. The heat exchanger 25 continuously heat-exchanges the supply air flow 110 and the exhaust flow 120 by passing the supply air flow 110 and the exhaust flow 120 therethrough. The heat exchanger 25 has a quadrangular prism shape and is arranged in the center of the housing 10 in the middle of the supply air ventilation path 10A and the exhaust air ventilation path 10B. The direction in which the supply air flow 110 flows in the supply air ventilation path 10A and the direction in which the exhaust air flow 120 flows in the exhaust air ventilation path 10B are the horizontal directions.

A pair of rhombus-shaped bottom surfaces of the square prism-shaped heat exchanger 25 are parallel to the front surface 13 and the rear surface 14 of the housing 10, and the other four side surfaces 25a are the top surface 11, the bottom surface 12, and the indoor side surface of the housing 10. A heat exchanger 25 is installed in the housing 10 so as not to be parallel to 15 and the outdoor side surface 16 . Here, the other four side surfaces 25 a are surfaces for sucking air into the heat exchanger 25 or blowing air from the heat exchanger 25 .

Of the four ridgeline portions 26a, 26b, 26c, and 26d formed by the intersection of the two side surfaces 25a, the other two ridgeline portions 26b and 26d are arranged so that the two ridgeline portions 26a and 26c are positioned in the vertical direction. The heat exchanger 25 is installed in the housing 10 so that the are positioned in the left-right direction.

The ridgeline portion 26a is connected to the inner surface of the top surface 11 in a state in which the heat exchanger 25 is housed in the housing 10, and partitions the supply air ventilation path 10A and the exhaust air ventilation path 10B in the left-right direction. The ridgeline portion 26c is connected to the inner surface of the bottom surface 12 in a state where the heat exchanger 25 is accommodated in the housing 10, and partitions the supply air ventilation path 10A and the exhaust air ventilation path 10B in the left-right direction.

The ridgeline portion 26b is connected to a partition wall 27 that vertically partitions the supply air ventilation path 10A and the exhaust air ventilation path 10B inside the housing 10 in a state where the heat exchanger 25 is housed in the housing 10. . The ridgeline portion 26d is connected to a partition wall 28 that vertically partitions the supply air ventilation path 10A and the exhaust air ventilation path 10B inside the housing 10 in a state where the heat exchanger 25 is housed in the housing 10. .

In the housing 10, two of the four sections separated by the four ridges 26a, 26b, 26c, and 26d of the heat exchanger 25 are provided with a supply air blower 31 and an exhaust air blower 32. be

The supply air blower 31 is provided in a region downstream of the heat exchanger 25 in the supply air ventilation path 10A. By operating the supply air blower 31, a supply air flow 110, which is an air flow directed from the outdoor to the room, advances through the supply air ventilation path 10A. Here, the airflow is the flow of air. The air supply blower 31 generates an air supply flow 110 by driving a motor.

The exhaust air blower 32 is provided in a region downstream of the heat exchanger 25 in the exhaust ventilation passage 10B. By operating the exhaust blower 32, an exhaust flow 120, which is an air flow directed from the room to the outside, advances through the exhaust air passage 10B. Exhaust blower 32 generates exhaust flow 120 by driving a motor.

Returning to FIG. 1, the heat exchange ventilator 100 includes a maintenance cover 33 that covers an opening (not shown) provided on the front surface 13 of the housing 10 at a position facing the end surface of the heat exchanger 25 on the front surface 13 . The heat exchanger 25 is enclosed in the housing 10 by closing the maintenance cover 33 , and the heat exchanger 25 can be taken in and out of the housing 10 through the opening by opening the maintenance cover 33 . Moreover, by removing the maintenance cover 33, cleaning and replacement of each component housed in the housing 10 can be performed through the opening.

The heat exchange ventilator 100 has a control box 34 on the front surface 13 of the housing 10 . The control box 34 accommodates a control panel, which is a control section (not shown). The motor of the supply air blower 31 and the motor of the exhaust air blower 32 are electrically connected to the control panel by lead wires 36 . Also, the control box 34 is connected to a remote controller (not shown) capable of communicating with the control panel. The remote controller receives commands from the user for various controls such as the ventilation operation of the heat exchange ventilator 100 . The remote controller outputs various commands received from the user to the control panel. The control panel controls the ventilation operation and the like of the heat exchange type ventilator 100 based on various commands input from the remote controller.

As shown in FIG. 2 , the heat exchange ventilator 100 includes a sensor 41 that detects the temperature of the supply airflow 110 in the supply airflow passage 10A and upstream of the heat exchanger 25 . The sensor 41 is electrically connected to a control panel in the control box 34 by lead wires (not shown). Sensor 41 is an example of an air quality sensor.

Next, the mounting structure of the sensor 41 in the heat exchange type ventilator 100 will be described. FIG. 3 is a perspective view showing an example of an arrangement state of sensors in the heat exchange ventilator according to Embodiment 1. FIG. 4 is an enlarged perspective view of the vicinity of the sensor in FIG. 3. FIG. 5 is a partial cross-sectional view of the vicinity of the sensor in the heat exchange ventilator according to Embodiment 1. FIG. FIG. 6 is a cross-sectional view enlarging the vicinity of the sensor in FIG. 4 is an enlarged view of region R1 in FIG. 3, and FIG. 6 is an enlarged view of region R2 in FIG. 3 shows a state in which the heat exchanger 25 is removed.

As shown in FIG. 3, the housing 10 includes air passage components that form an air supply air passage 10A and an air exhaust air passage 10B. Examples of air passage components include air passage components 51 provided between the air supply inlet 21 and the heat exchanger 25 and between the exhaust air outlet 24 and the heat exchanger 25, A water receiving pan 52 is provided below the side surface 25 a leading to the air suction port 21 . Air passages inside the product are made of styrene. Styrol is a material that can be made into various shapes. For example, the framework of the supply air blower 31 and exhaust air blower 32 in FIG. 1, the air passage components 51 in FIG. It is

As shown in FIGS. 3 to 6, the heat exchange type ventilator 100 is located inside the supply air passage 10A on the upstream side of the heat exchanger 25, from the inner wall of the front surface 13 of the housing 10 to the rear surface 14. It has a sensor mounting wall 42 protruding toward it. The sensor mounting wall 42 is provided substantially perpendicular to the direction in which the supply airflow 110 flows in the supply airflow passage 10A. The sensor mounting wall 42 is provided adjacent to the opening 33a provided on the front surface 13 of the housing 10, which opens when the maintenance cover 33 is opened, in the air supply ventilation path 10A. It is desirable that the sensor mounting wall 42 be provided at a position closer to the opening 33a than the supply air intake port 21 in the supply air ventilation passage 10A. A lower portion of the sensor mounting wall 42 is connected to the inner wall of the bottom surface 12 of the housing 10 . One end of the sensor mounting wall 42 in the front-rear direction is connected to the inner wall of the front surface 13 of the housing 10 . The sensor mounting wall 42 is a barrier part that blocks part of the air supply ventilation path 10A.

FIG. 7 is a perspective view showing an example of the configuration of the sensor mounting wall. The sensor mounting wall 42 has a concave sensor storage portion 421 . The sensor housing portion 421 corresponds to the recess. The sensor mounting wall 42 has a ventilation port 422 below the center portion in the vertical direction of the bottom of the recessed sensor storage portion 421 . Here, the bottom portion of the sensor housing portion 421 is a surface perpendicular to the left-right direction among the surfaces forming the recess. The width, which is the size in the front-rear direction, of the ventilation port 422 is wider than the width of the bottom of the recessed sensor housing portion 421 . The ventilation port 422 is an opening that communicates the upstream side and the downstream side of the supply air flow 110 in the supply air ventilation path 10A of the sensor mounting wall 42 .

The sensor mounting wall 42 has a projecting portion 423 that protrudes toward the inside of the recessed sensor storage portion 421, specifically toward the inner wall of the opposing side surface, below the inner wall of the side surface that forms the recessed sensor storage portion 421. have. In addition, the sensor housing portion 421 has a size that allows the outer peripheral portion of the sensor holding member 45 to be described later to be fitted therein. The sensor mounting wall 42 is made of foamed polystyrene with thermal insulation. The surface of the sensor mounting wall 42 on which the sensor storage portion 421 is provided corresponds to the wall surface.

FIG. 8 is a perspective view showing an example configuration of a sensor holding member to which a sensor is attached. The sensor holding member 45 has a shape that covers the surface of the sensor 41 other than the sensor detection portion 41a, and the sensor 41 can be fitted thereon. The sensor detection unit 41a corresponds to the detection unit.

FIG. 9 is a diagram showing an example of a state in which the sensor is attached to the sensor attachment wall. The sensor holding member 45 to which the sensor 41 shown in FIG. 8 is attached is fitted into the recessed sensor housing portion 421 of the sensor mounting wall 42 shown in FIG. 7 by press fitting. Specifically, the outer peripheral portion of the sensor holding member 45 other than the surface where the sensor detection portion 41 a is exposed is fitted into the concave sensor storage portion 421 .

Here, the structure around the sensor 41 in the heat exchange ventilator 100 according to Embodiment 1 in comparison with the conventional technology will be described. Here, as a conventional technology, the heat exchange type ventilator described in Patent Document 1 will be taken as an example.

As described above, in the heat exchange ventilator disclosed in Patent Document 1, the case corresponding to the sensor holding member 45 holding the sensor on the bottom surface of the air supply ventilation passage is fixed by the sensor fixing screw. In other words, fixing the sensor holding member requires a screw tightening operation using a screw for fixing the sensor. In addition, removing the sensor also requires the work of removing the screw for fixing the sensor.

On the other hand, in Embodiment 1, the sensor holding member 45 to which the sensor 41 is attached is fitted into the sensor storage portion 421 provided in the sensor attachment wall 42 . Since the sensor mounting wall 42 is made of expanded polystyrene, the elastic force of the expanded polystyrene forming the inner wall of the sensor housing portion 421 can be used when fitting the sensor holding member 45 into the sensor housing portion 421 . In particular, the sensor holding member 45 is press-fitted into the sensor housing portion 421 while deforming the projecting portion 423, and the elastic force of the projecting portion 423 returning to its original state causes the sensor holding member 45 to move within the sensor housing portion 421. Fixed. This makes it difficult for the sensor holding member 45 to come off from the sensor housing portion 421 even when the sensor mounting wall 42 receives vibration, impact, or the like. Moreover, since screws are not used to fix the sensor holding member 45 holding the sensor 41 to the sensor mounting wall 42, an easy assembly work can be realized.

In the example of FIG. 7, the projection 423 protrudes toward the inside of the sensor storage portion 421 near the lower portion of the inner wall of the side surface forming the concave sensor storage portion 421, but the embodiment is not limited to this. The protruding portion 423 may be provided on the inner wall of the concave sensor storage portion 421, may be provided at another position on the side inner wall, or may be provided on the upper or lower inner wall. Also, a plurality of protrusions 423 may be provided on the inner wall of the concave sensor housing portion 421 . Further, the protruding portion 423 is provided not on the sensor mounting wall 42 but on the outer peripheral portion of the sensor holding member 45 that is covered by the sensor housing portion 421 when fitted into the sensor housing portion 421 so as to protrude outward. may

In the heat exchange ventilator disclosed in Patent Document 1, the housing and the case holding the sensor are not insulated, so when the housing is cold, the case is also cold. In this state, if a supply air stream containing warm, high-humidity air flows through the air passage, condensation will form on the sensor.

In addition, in the heat exchange type ventilator disclosed in Patent Document 1, the case is placed as it is in the supply air ventilation path. As a result, the supply air flow flowing through the supply air ventilation path has an increased chance of hitting the sensor detection section. As a result, fog, dust, or the like contained in the supplied airflow adheres or accumulates on the sensor detection portion.

On the other hand, in Embodiment 1, since the sensor mounting wall 42 is made of expanded polystyrene, the sensor mounting wall 42 has a heat insulating effect. Therefore, heat can be insulated between the structure to which the sensor mounting wall 42 is attached, which is the housing 10 in this example, and the sensor 41 . Therefore, even when the structure is cold, the sensor holding member 45 is less likely to become cold than the structure. Even if the structure is cold and warm, high-humidity air flows into the air passage, condensation on the sensor 41 can be suppressed.

A lead wire 48 from the sensor 41 is routed under the heat exchanger 25 and the water receiving pan 52 and connected to the control panel of the control box 34 . When replacing the sensor 41 itself, it is necessary to remove the heat exchanger 25 and the water receiving pan 52 . However, the sensor 41 is positioned closer to the opening 33a than in the conventional art, and the sensor 41 is not fixed to the sensor mounting wall 42 by screwing. , parts that need to be removed when replacing the sensor 41 and the removal time can be reduced.

As shown in FIGS. 7 and 9, the ventilation port 422 is provided below the central portion of the sensor housing portion 421 in the vertical direction. Further, as shown in FIG. 9, when the sensor holding member 45 is fitted into the sensor housing portion 421, the sensor detecting portion 41a of the sensor 41 is positioned above the central portion of the sensor housing portion 421 in the vertical direction. are placed. In other words, the sensor detection portion 41 a is positioned above the ventilation port 422 . More specifically, when viewed from a position directly facing the ventilation port 422 , the position of the sensor detecting portion 41 a is shifted upward with respect to the ventilation port 422 . The sensor mounting wall 42 is mounted in the supply air passage 10A so that the sensor detection portion 41a of the sensor 41 to be mounted faces the downstream side rather than the upstream side.

As shown in FIGS. 5 and 6, the sensor mounting wall 42 is provided so as to block a part of the supply air passage 10A, so that part of the supply air flow 110 hits the sensor mounting wall 42, The air flows through the supply air passage 10A so as to bypass the wall 42. Since the sensor 41 is arranged to face the downstream side of the supply air flow 110 , the supply air flow 110 does not hit the sensor 41 directly.

Also, a portion of the supply air flow 110 that hits the sensor mounting wall 42 passes through the ventilation port 422 . When the sensor 41 is attached to the sensor storage portion 421, the supply airflow 110 passing through the ventilation port 422 does not directly hit the sensor detection portion 41a. This is because the position of the sensor detecting portion 41 a is shifted upward with respect to the position of the ventilation port 422 . In this way, the wind passing through the ventilation port 422 does not directly hit the sensor detecting portion 41 a of the sensor 41 , and the sensor 41 is protected by the sensor mounting wall 42 . Air taken in from the outside such as the outdoors contains fog, dust, or the like, and the structure of the first embodiment prevents such air from directly hitting the sensor detecting portion 41a. As a result, it is possible to reduce the adhesion of fog or dust contained in the air to the sensor detection portion 41a.

In addition, by allowing air to pass through the ventilation port 422, the air can be gently drawn into the sensor detection portion 41a, and the atmosphere of the air flowing through the supply air passage 10A around the sensor detection portion 41a can be reduced. can be the same as As a result, it is possible to detect the temperature of the air flowing through the supply air passage 10A with good followability.

Fog or dust tends to fall downward due to gravity. In addition, when the supply airflow 110 containing mist or the like passes through the ventilation port 422, the mist or the like adheres to the edge of the ventilation port 422, and the water droplets that grow together also flow downward. Therefore, by positioning the sensor detection portion 41a above the air vent 422, it is possible to prevent fog, dust, or water droplets from adhering or accumulating on the sensor detection portion 41a.

The sensor mounting wall 42 is arranged inside the supply air passage 10A so as to protrude inward from the inner wall so as to partially block the air passage. If the upper end portion of the sensor mounting wall 42 is not connected to the upper inner wall of the air supply ventilation passage 10A, mist or dust will be generated from the upper end portion of the sensor mounting wall 42 in the same manner as the ventilation port 422 described above. Or the water droplets flow downward. For this reason, the upper end portion of the sensor mounting wall 42 is configured to be connected to the upper inner wall constituting the air supply ventilation passage 10A, thereby preventing fog, dust, or water droplets from adhering or accumulating on the sensor detection portion 41a. can be suppressed.

Although the sensor 41 is a temperature sensor in the first embodiment, it is not limited to a temperature sensor as long as it detects the air quality of the passing airflow. For example, the sensor 41 may be a sensor capable of detecting any one of humidity, dust, odor, etc. as air quality.

Further, in the first embodiment, the sensor 41 is arranged inside the supply air passage 10A, but the sensor 41 may be arranged inside the exhaust air passage 10B. Furthermore, in the above description, the case where the sensor mounting wall 42 partially blocking the air supply ventilation passage 10A is provided inside the air supply ventilation passage 10A and the sensor holding member 45 is fitted to the sensor mounting wall 42 is shown. However, Embodiment 1 is not limited to this. In one example, the sensor holding member 45 may be fitted to the wall surface that constitutes the supply air passage 10A or the exhaust air passage 10B. That is, a wall surface that can contact the airflow flowing through the supply air ventilation path 10A or the exhaust air ventilation path 10B, more specifically, a wall surface that constitutes the supply air ventilation path 10A or the exhaust air ventilation path 10B, or in the supply air ventilation path 10A or It is sufficient that the sensor holding member 45 is fitted to the wall surface inside the exhaust air passage 10B.

Further, in Embodiment 1, when viewed from the position directly facing the ventilation port 422, the position of the sensor detection unit 41a is shifted upward with respect to the ventilation port 422, but the ventilation port 422 and the sensor detection The positional relationship with the portion 41a is not limited to this. That is, when viewed from a position directly facing the ventilation port 422, the position of the sensor detecting portion 41a of the sensor 41 may be displaced from the region viewed from the upstream side through the ventilation port 422 to the downstream side. For example, even if the ventilation port 422 and the sensor detecting portion 41a overlap, the sensor holding member 45 may block a part of the ventilation port 422 so that the sensor detecting portion 41a is hidden from the ventilation port 422. good too. As a result, the position of the sensor detecting portion 41a and the area visible from the ventilation port 422 penetrating from the upstream side to the downstream side are misaligned.

Furthermore, in the above description, the sensor mounting wall 42 is provided in the air passage of the heat exchange ventilator 100 including the heat exchanger 25 that exchanges heat between the supply air flow 110 and the exhaust air flow 120, and the sensor 41 is installed. Although an example of attachment has been given, the embodiment is not limited to this. For example, the sensor 41 may be mounted by providing the sensor mounting wall 42 in the air passage of the ventilation system that does not include the heat exchanger 25 .

In the first embodiment, a sensor holding member 45 holds a sensor 41 for detecting the state of the air quality of the airflow flowing through the air passage in the ventilator, and the sensor mounting sensor 41 is a barrier portion that partially blocks the air passage. A sensor holding member 45 is detachably press-fitted into the wall 42 . As a result, the sensor 41 can be attached to the housing 10 of the ventilator without using screws for fixing the sensor, and fixing the sensor 41 to the housing 10 becomes easier than before. have Moreover, since no sensor fixing screw is used, there is an effect that the sensor 41 can be attached and detached without using a tool when attaching or replacing the sensor 41 .

Further, the sensor mounting wall 42 is made of foamed polystyrene, and the sensor holding member 45 is fitted into the sensor housing portion 421 which is a concave portion provided in the sensor mounting wall 42 . As a result, even if the sensor mounting wall 42 is subjected to vibration or impact, the sensor holding member 45 is held by the elastic force generated by compressing a part of the sensor mounting wall 42, thereby allowing the sensor to be stored. It becomes difficult for the sensor 41 to come off from the portion 421 , and the state where the sensor 41 is held by the sensor mounting wall 42 can be maintained.

Furthermore, a ventilation port 422 is provided on the bottom surface of the sensor housing portion 421 . When part of the wind that hits the sensor mounting wall 42 passes through the ventilation port 422, the wind can be caught in the sensor detection part 41a, and the surroundings of the sensor detection part 41a can be used as the flow of air flowing through the air passage. Atmosphere can be the same. As a result, the sensor 41 can detect the temperature of the air flowing through the air passage with good followability.

Further, the position of the ventilation port 422 and the position of the sensor detecting portion 41a of the sensor 41 are shifted when viewed from a position directly facing the ventilation port 422 . As a result, it is possible to prevent fog, dust, or the like contained in the airflow from directly hitting the sensor detection portion 41a.

Further, the position of the sensor detecting portion 41a of the sensor 41 is shifted upward with respect to the position of the ventilation port 422. FIG. As a result, when an air flow containing fog or the like passes through the ventilation opening 422, water droplets adhering to the edge of the ventilation opening 422 can be prevented from flowing down to the sensor detecting portion 41a.

The configuration shown in the above embodiment is an example, and can be combined with another known technique, and part of the configuration can be omitted or changed without departing from the scope of the invention. It is possible.

10 housing, 10A supply air ventilation path, 10B exhaust ventilation path, 11 top surface, 12 bottom surface, 13 front surface, 14 rear surface, 15 indoor side surface, 16 outdoor side surface, 21 air intake port, 22 air supply outlet, 23 exhaust air inlet, 24 exhaust air outlet, 25 heat exchanger, 25a side surface, 26a, 26b, 26c, 26d edge line portion, 27, 28 partition wall, 31 air supply blower, 32 exhaust air blower, 33 maintenance cover, 33a opening , 34 control box, 36, 48 lead wire, 41 sensor, 41a sensor detection part, 42 sensor mounting wall, 45 sensor holding member, 51 air passage component, 52 water tray, 100 heat exchange type ventilation device, 110 air supply flow , 120 exhaust flow, 421 sensor housing, 422 vent, 423 protrusion.

Claims (8)

A ventilation device for ventilating a room by flowing an air flow, which is an air flow, between a room and the outside through an air passage,
an air quality sensor that detects an air quality state of the air flow flowing through the air passage;
a barrier part provided to block a part of the air passage;
a sensor holding member detachably fitted to the wall surface of the barrier portion and holding the air quality sensor ;
with
A ventilator according to claim 1, wherein the sensor holding member is fitted into the barrier part so that the exposed surface of the air quality sensor faces the downstream side of the air flow. 2. A ventilator according to claim 1, wherein said wall surface is made of polystyrene foam. 3. The ventilator according to claim 1, wherein the wall surface has a recess into which the outer peripheral portion of the sensor holding member is fitted. The barrier part further has an opening in a part of the bottom part of the recess into which the outer peripheral part of the sensor holding member is fitted, which communicates the upstream side and the downstream side of the air flow in the air passage. 4. A ventilator according to any one of claims 1 to 3, characterized in that: 4. A position of the detection portion of the air quality sensor is displaced from a region viewed from the upstream side through the opening from a position directly facing the opening and the downstream side. The ventilator according to . 6. The ventilator according to claim 5 , wherein the detection portion of the air quality sensor is positioned above the opening. 7. The air quality sensor according to any one of claims 1 to 6 , wherein the air quality sensor is a sensor capable of detecting any one of temperature, humidity, dust and odor in the airflow. Ventilator. a housing provided with an air supply inlet and an exhaust air outlet on the outdoor side and an exhaust air inlet and an air supply outlet on the indoor side;
an air supply ventilation passage provided inside the housing and provided between the air supply inlet and the air supply outlet;
an exhaust ventilation passage provided inside the housing and provided between the exhaust suction port and the exhaust outlet;
a heat exchanger that is provided across the supply air ventilation path and the exhaust air ventilation path and exchanges heat between the airflow flowing through the supply air ventilation path and the exhaust air ventilation path;
an air supply blower provided in the middle of the air supply ventilation path, sucking the outdoor air from the air supply inlet and supplying air into the room from the air supply outlet;
an exhaust air blower provided in the middle of the exhaust ventilation path, sucking air in the room from the exhaust suction port and exhausting the air to the outside from the exhaust air blowing port;
further comprising
8. Any one of claims 1 to 7 , wherein the air quality sensor, the sensor holding member, and the wall surface of the barrier are provided in at least one of the supply air ventilation path and the exhaust air ventilation path. Ventilation device as described in 1.

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