JPH051930U - Ventilation fan - Google Patents

Abstract

(57) [Summary] [Purpose] A sensor that detects the indoor air condition is provided outside the main body of the ventilation fan so that it will not be affected by the heat generated by the operation of the ventilation fan. A control circuit 32 and a display unit 41 are provided on a grill 25 of a simultaneous air supply / exhaust type ventilation fan 16 in which a supply / exhaust air blower 21 and a heat exchanger 29 are installed. An indoor temperature sensor 35 for detecting the indoor air condition is detachably attached to the grill 25 below the grill 25 via a connector 36, and a signal from the indoor temperature sensor 35 is sent to the control circuit 32.
The output of the control circuit 32 is displayed on the display unit 41.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a ventilation fan provided with various sensors and an arithmetic circuit.

[0002]

[Prior Art]

 Conventionally, as this type of ventilation fan, as shown in FIG. 6, it is attached to the wall 1, an air intake 3 and an exhaust port 4 are provided on the outdoor side 2, and the air intake 3 is detachably attached to the indoor side 5. Also, a grill 9 having an air supply port 7 and an exhaust port 8 forming an air passage 6 communicating with the exhaust port 4 is mounted, and an outer casing 11 having a supply / exhaust blower 10 therein is provided. It is known that the grill 9 of the outer casing 11 is provided with a sensor 12 for detecting the indoor air condition, a display unit 13 for displaying a signal from the sensor, and an arithmetic circuit 14 (for example, Japanese Patent Application No. (See Japanese Laid-Open Patent Publication No. 1-167445).

[0003]

[Problems to be solved by the device]

 In the conventional ventilation fan as described above, the sensor 12 and the calculation circuit 14 are housed in the grill 9, and the heat generated by the calculation circuit 14, especially when the supply / exhaust blower 10 is stopped, causes the sensor 12 to generate heat. However, there was a problem that the accuracy of the sensor 12 was reduced.

The present invention has been made to solve the above problems, and an object thereof is to obtain a ventilation fan in which the accuracy of the sensor is ensured without being affected by heat generated by the arithmetic circuit when the air supply and exhaust blower is stopped. It is what

[0005]

[Means for Solving the Problems]

 An exhaust fan according to the present invention is attached to a wall, has an outer casing having an air intake and an exhaust port on the outside of the room, and is detachably provided on the indoor side of the outer casing and communicates with the air intake and the exhaust port. A grill provided with an air supply port and an exhaust port that form an air passage, a blower for air supply and exhaust provided in the air passage, a sensor provided in the grill, and a sensor provided in the grill from the sensor. The sensor is provided on the outer wall of the grill so that the sensor can be attached or detached or can be retracted, provided with a control circuit for processing and displaying the measurement signal and controlling the air supply and exhaust blower.

[0006]

[Action]

 In this invention, an outer casing attached to a wall and having an air intake port and an exhaust port on the outdoor side, and an air passage which is detachably provided on the indoor side of this outer chamber and communicates with the air intake port and the exhaust port. Which has an air supply port and an exhaust port which form a fan, an air supply and exhaust fan provided in the air passage, a sensor provided in the grill, and a measurement signal from the sensor in the grill. In addition to processing and displaying, the control circuit for controlling the air supply / exhaust air blower is provided, and the sensor is installed on the outer wall of the grill so that it can be attached or detached, and the sensor can be placed away from the circuit. In addition to that, it can be attached to and detached from the outer casing or it can be folded down.

[0007]

【Example】

 1 to 3a and 3b are views showing an embodiment of the present invention, in which reference numeral 15 is an outer casing of an exchange fan 16, which is attached to a wall 17 and has an air intake port 18 and an exhaust port 19 on the outdoor side. It is provided and has an opening 20 on the indoor side. Reference numeral 21 denotes an air supply / exhaust blower disposed in the outer casing, which includes an exhaust air blower 22 facing the exhaust port 19, an air supply blower 23 facing the air intake 18, and a motor 24. Reference numeral 25 denotes a grill which is detachably mounted inside the chamber of the outer casing 15 and has an air supply port 27 and an exhaust port 28 which communicate with the air intake port 18 and the exhaust port 19 to form an air passage 26. Reference numeral 29 denotes a heat exchanger arranged in the outer casing 15, which is located on the air passage 26 and performs heat exchange without changing the temperature of the air in the room. Reference numeral 30 denotes an outside air temperature sensor, which is arranged near the air intake 18 in the outer casing 15. Reference numeral 31 is a circuit box provided inside the grill 25, in which a control circuit described later is provided. A control circuit 32 is provided in the grill 25, receives a measurement signal from the outside air temperature sensor 30 and an indoor temperature sensor described later, and switches the switching circuit (to operate the air supply / exhaust blower 21 automatically). (Not shown) is built in. Reference numeral 33 is a concave connector provided in the control circuit 32, and 34 is a sensor box, which is detachably connected to the circuit box 31. Reference numeral 35 denotes an indoor temperature sensor built in the sensor box, which has a convex connector 36 connected to the concave connector 33 at its tip. 37 is a barometric pressure sensor, which is built in the grill 25. A weather forecast calculation circuit 38 calculates a signal from the atmospheric pressure sensor 37 and outputs a weather forecast. 39 is a clock circuit provided on the grill 25, 40 is a miscellaneous gas sensor also provided on the grill 25, 41 is a display unit provided on the grill 25, and 42 is a clock display. Is output. A weather forecast circuit 43 is output from the weather forecast calculation circuit 38. Reference numeral 44 indicates an indoor dirt, which is output from the miscellaneous gas sensor 40. 45 and 46 are indoor temperature display and indoor humidity display, 47 is an outside air temperature display, and 48, 49 and 50 are warning display parts output from the control circuit 32.

In the ventilation fan configured as described above, the power supply / exhaust blower 21 is started when the power is input to the motor 24, and the air intake port 18 moves to the air supply port 27 and the exhaust port 28. To the exhaust port 19 through the air passage 26. In this case, various sensors and the control circuit 32 output to the display unit 41. The measurement signal from the sensor, the control circuit 32 that processes this measurement signal, the display section 41 by this control circuit 32, and the automatic operation function of the air supply / exhaust blower 21 determine the indoor dirt and temperature / humidity status, and automatically It enables operation, creates an appropriate indoor environment, and prevents dew condensation on the wall 17 in winter. In addition, it is possible to prevent dehumidification in the rainy season, summer, and excessive drying in the room in the winter, and also to prevent stains on the wall 17 surface, mold, mites, etc., and to maintain the comfort of people in the room. Further, the indoor temperature sensor 35 is not installed in the grill 25 but is provided outside and is detachable via the control circuit 32 and the connectors 33 and 36. 35 is not affected, the accuracy is stable, the indoor temperature sensor 35 can be separately provided at the time of packing and transporting the ventilation fan 16, the packing becomes small, and the indoor temperature sensor 35 can be reliably protected.

Although the control circuit 32 is provided in the grill 25 in the above embodiment, it may be provided in the outer wall of the grill 25 as shown in FIG.

Further, as shown in FIG. 5, the sensor box 34 may be configured to rotate via the outer housing 15 and the pin 60, and may be of a retractable type in which it is tilted to the outside of the outer housing 15 at the time of package transportation. The same effect as the example is obtained.

[0011]

[Effect of the device]

 As described above, this invention is provided with an outer casing which is attached to a wall and has an air intake and an exhaust port on the outside of the room, and is detachably provided on the indoor side of the outer casing. In the grill, there are an air supply port and an exhaust port forming an air passage communicating with the air supply and exhaust ports, an air supply and exhaust blower provided in the air passage, a sensor provided in the grill, and the inside of the grill. In addition to processing and displaying the measurement signal from the sensor, it also has a control circuit for controlling the air supply and exhaust blower, and the sensor is provided on the grill outer wall so that it can be attached or removed. The air condition is not affected by the temperature inside the outer casing, the accuracy of the sensor is improved, the sensor can be handled easily, the product packaging is small, and the assembly is easy.

[Brief description of drawings]

FIG. 1 is a front view of a display unit showing an embodiment of the present invention.

FIG. 2 is a mounting sectional view showing an embodiment of the present invention.

FIG. 3 is a detachable view showing an embodiment of the present invention.

FIG. 4 is a sensor mounting view showing another embodiment of the present invention.

FIG. 5 is a sensor mounting view showing still another embodiment of the present invention.

FIG. 6 is a sectional view of a conventional ventilation fan attached.

[Explanation of symbols]

 15 Outer case 16 Ventilation fan 17 Wall 18 Air intake 19 Exhaust port 21 Air supply / exhaust blower 25 Grill 26 Air passage 27 Air supply 28 Exhaust port 32 Control circuit 35 Indoor temperature sensor

Claims (1)

[Claims for utility model registration] [Claim 1] Attached to a wall, detachably provided on the indoor side of an outer casing having an air inlet and an air outlet on the outside, and communicating with the air inlet and the air outlet. A grill provided with an air supply port and a discharge port forming an air passage, a blower for air supply and exhaust provided in the air passage, a sensor provided in the grill, and a sensor provided in the grill from the sensor. A ventilation fan comprising a control circuit for processing and displaying a measurement signal and controlling the air supply / exhaust blower, wherein the sensor is provided on the outer wall of the grill so as to be detachable or foldable.