Toilet exhaust fan linkage control system

Abstract

The utility model discloses a bathroom exhaust fan linkage control system which comprises a manual control loop (1), a linkage control loop (2), a roof exhaust fan control loop (3) and a bathroom exhaust fan power distribution loop (4), the outside of the roof exhaust fan control loop (3) is connected with a roof exhaust fan, and the outside of the bathroom exhaust fan power distribution loop (4) is connected with a bathroom exhaust fan. A contactor coil (106) is arranged in the manual control loop (1), a normally open relay normally open contact (201) matched with the contactor coil (106) is arranged in the linkage control loop (2), and a relay coil (401) matched with the normally open relay normally open contact (201) is arranged in the toilet exhaust fan power distribution loop (4). The device has the characteristics of simple structure, low control cost and convenience in maintenance.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bathroom exhaust fan control system, in particular to a bathroom exhaust fan linkage control system. BACKGROUND

[0002] In the bathroom exhaust design of high-rise office building and high-rise residence, a shared exhaust system is needed to realize the exhaust function, which comprises a small power exhaust fan installed in each floor bathroom and a large power exhaust fan installed on the roof, and the bathroom exhaust fan and the roof exhaust fan are connected through a vertical exhaust pipe; the use method is that when any floor bathroom exhaust fan is opened, the roof exhaust fan is linked to open; when all floor bathroom exhaust fans are in the closed state, the roof exhaust fan is closed.

[0003] On the basis of the above, the linkage of the bathroom exhaust fan and the roof exhaust fan is mainly realized through the building automatic control system at present, but the defects of the building automatic control system are that, on the one hand, the purchase cost of the system is relatively high, which is easy to exceed the bearing range of the owner; on the other hand, the system needs to be carefully and pre-adjusted and frequently maintained, and once the pre-adjustment is not in place or the later maintenance is insufficient, the linkage function is easy to fail, thereby affecting the stability of the exhaust system.

[0004] Therefore, the existing control system for the bathroom exhaust fan has the problems of high control cost and difficult later maintenance. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a bathroom exhaust fan linkage control system.

[0006] The utility model discloses a bathroom exhaust fan linkage control system, including manual control circuit, linkage control circuit, roof exhaust fan control circuit and bathroom exhaust fan distribution circuit, the outside connection roof exhaust fan of roof exhaust fan control circuit, the outside connection bathroom exhaust fan of bathroom exhaust fan distribution circuit, be equipped with contactor coil in manual control circuit, be equipped with the normally open type relay dynamic closing contact that cooperates contactor coil in linkage control circuit, be equipped with the relay coil that cooperates normally open type relay dynamic closing contact in bathroom exhaust fan distribution circuit,

[0007] The relay coil is used for triggering the normally open type relay dynamic closing contact to close after the bathroom exhaust fan opens;

[0008] The normally open type relay dynamic closing contact is used for triggering the contactor coil to be electrified after closing;

[0009] The contactor coil is used to control the operation of the roof exhaust fan after it is energized.

[0010] In the aforementioned bathroom exhaust fan linkage control system, the manual control circuit includes a manual selector switch, a delayed reset stop button, a delayed reset start button, a normally open contactor normally open contact, a normally closed thermal relay normally closed contact, and a contactor coil connected in sequence. The manual selector switch is used to control the contactor coil to be manually switched on or off or to be switched on or off by the linkage control circuit.

[0011] In the aforementioned bathroom exhaust fan linkage control system, the bathroom exhaust fan power distribution circuit includes a relay coil connected in parallel and multiple current transformers. Each current transformer corresponds to a bathroom exhaust fan, and the current transformer is used to trigger the relay coil to be energized after the bathroom exhaust fan is powered on and running.

[0012] In the aforementioned bathroom exhaust fan linkage control system, the roof exhaust fan control circuit includes a circuit breaker, a contactor, and a thermal relay connected in sequence, wherein the contactor is used to open and close in coordination with the on and off states of the contactor coil.

[0013] Compared with the prior art, this utility model has the following characteristics:

[0014] (1) By limiting the structure of the control system, this utility model enables the linkage control of the bathroom exhaust fan and the roof exhaust fan through only a secondary control circuit. Compared with the building automation system, it can effectively reduce the complexity of the control system and the equipment cost, and facilitate the user's later maintenance.

[0015] (2) By using the relay coil, normally open relay contact, contactor coil and contactor to control the roof exhaust fan, the number of components required to realize the linkage control function of the control system can be further simplified, thereby further reducing the system cost and facilitating the user's installation and subsequent maintenance.

[0016] Therefore, this utility model has the characteristics of simple structure, low control cost and convenient maintenance. Attached Figure Description

[0017] Figure 1 It is a circuit diagram of the manual control circuit, the linkage control circuit, and the power distribution circuit of the bathroom exhaust fan;

[0018] Figure 2 This is the circuit diagram of the roof exhaust fan control loop.

[0019] The labels in the attached diagram are as follows: 1-Manual control circuit, 2-Interlocking control circuit, 3-Roof exhaust fan control circuit, 4-Toilet exhaust fan power distribution circuit, 5-Fuse, 101-Manual selector switch, 102-Delayed reset stop button, 103-Delayed reset start button, 104-Normally open contactor normally open contact, 105-Normally closed thermal relay normally closed contact, 106-Contactor coil, 107-Roof fan running indicator light, 201-Normally open relay normally open contact, 301-Circuit breaker, 302-Contactor, 303-Thermal relay, 401-Relay coil, 402-Current transformer. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0021] Example. A bathroom exhaust fan linkage control system, configured as follows: Figure 1 As shown, it includes a manual control circuit 1, a linkage control circuit 2, a roof exhaust fan control circuit 3, and a bathroom exhaust fan power distribution circuit 4. The roof exhaust fan control circuit 3 is externally connected to the roof exhaust fan, and the bathroom exhaust fan power distribution circuit 4 is externally connected to the bathroom exhaust fan. The manual control circuit 1 is equipped with a contactor coil 106, the linkage control circuit 2 is equipped with a normally open relay normally open contact 201 that works with the contactor coil 106, and the bathroom exhaust fan power distribution circuit 4 is equipped with a relay coil 401 that works with the normally open relay normally open contact 201.

[0022] The relay coil 401 is used to trigger the normally open relay normally open contact 201 to close after the bathroom exhaust fan is turned on;

[0023] The normally open relay normally open contact 201 is used to trigger the contactor coil 106 to be energized after being closed;

[0024] The contactor coil 106 is used to control the operation of the roof exhaust fan after it is energized.

[0025] The manual control circuit 1 includes a manual selector switch 101, a delayed reset stop button 102, a delayed reset start button 103, a normally open contactor normally open contact 104, a normally closed thermal relay normally closed contact 105, a contactor coil 106, and a roof ventilator operation indicator light 107 connected in sequence. The manual selector switch 101 has three positions: automatic, manual, and stop. When the manual selector switch 101 is in the manual position, the roof ventilator is controlled by the manual control circuit 1. When the manual selector switch 101 is in the automatic position, the roof ventilator is controlled by the linkage control circuit 2. When the manual selector switch 101 is in the stop position, the roof ventilator is in the off state.

[0026] The linkage control circuit 2 is externally connected to a manual selection switch 101. When the manual selection switch 101 is in the manual position, the linkage control circuit 2 is disconnected; when the manual selection switch 101 is in the automatic position, the linkage control circuit 2 is connected.

[0027] The power distribution circuit 4 for the bathroom exhaust fan includes a relay coil 401 connected in parallel and multiple current transformers 402. Each current transformer 402 corresponds to a bathroom exhaust fan on a different floor. The current transformer 402 is used to energize the relay coil 401 after the bathroom exhaust fan is powered on. The bathroom exhaust fan is externally connected to a rocker switch. When the rocker switch is pressed, the bathroom exhaust fan is powered on and turned on. At the same time, the current transformer 402 generates an induced current after detecting the current of the bathroom exhaust fan, thereby controlling the relay coil 401 to be energized.

[0028] The roof exhaust fan control circuit 3 includes a circuit breaker 301, a contactor 302 and a thermal relay 303 connected in sequence. The contactor 302 is used to open and close in coordination with the on and off states of the contactor coil 106.

[0029] The manual control circuit 1 is externally connected to a fuse 5, which is used to protect the safe operation of the entire control system.

[0030] The working principle of this utility model is as follows: When using this utility model, the user can control the operating status of the system through the manual selection switch 101. When the manual selection switch 101 is in the manual mode, the user can control the opening and closing of the roof exhaust fan through the delayed reset stop button 102 and the delayed reset start button 103, which is suitable for manual operation during maintenance.

[0031] When the manual selector switch 101 is in automatic mode, it is controlled by the linkage control circuit 2. At this time, when the bathroom exhaust fan on any floor starts, the current transformer 402 installed in the current circuit of that bathroom exhaust fan detects the circuit current, thereby generating an induced current and triggering the relay coil 401 to energize. After the relay coil 401 is energized, the normally open relay contact 201 closes, thus connecting the linkage control circuit 2, energizing the contactor coil 106, and closing the contactor 302. When the contactor 302 closes, the roof exhaust fan control circuit 3 is activated, the roof exhaust fan is powered on and starts, and the roof exhaust fan operation indicator light 107 illuminates, indicating that the roof exhaust fan is in operation.

[0032] Similarly, when all bathroom exhaust fans are turned off, the relay coil 401 is de-energized and the normally open relay contact 201 is opened, thereby causing the contactor coil 106 to disconnect the roof exhaust fan control circuit 3 after the power is turned off, and the roof exhaust fan is turned off.

Claims

1. A bathroom exhaust fan linkage control system, characterized in that: It includes a manual control circuit (1), a linkage control circuit (2), a roof exhaust fan control circuit (3), and a bathroom exhaust fan power distribution circuit (4). The roof exhaust fan control circuit (3) is externally connected to the roof exhaust fan, and the bathroom exhaust fan power distribution circuit (4) is externally connected to the bathroom exhaust fan. The manual control circuit (1) is equipped with a contactor coil (106), the linkage control circuit (2) is equipped with a normally open relay normally open contact (201) that works with the contactor coil (106), and the bathroom exhaust fan power distribution circuit (4) is equipped with a relay coil (401) that works with the normally open relay normally open contact (201). The relay coil (401) is used to trigger the normally open relay contact (201) to close after the bathroom exhaust fan is turned on; The normally open relay's normally open contact (201) is used to energize the contactor coil (106) after it is closed; The contactor coil (106) is used to control the operation of the roof exhaust fan after it is energized.

2. The bathroom exhaust fan linkage control system according to claim 1, characterized in that: The manual control circuit (1) includes a manual selector switch (101), a delayed reset stop button (102), a delayed reset start button (103), a normally open contactor normally open contact (104), a normally closed thermal relay normally closed contact (105), and a contactor coil (106) connected in sequence. The manual selector switch (101) is used to control the contactor coil (106) to be manually turned on or off or to be turned on or off by the linkage control circuit (2).

3. The bathroom exhaust fan linkage control system according to claim 1, characterized in that: The power distribution circuit (4) of the bathroom exhaust fan includes a relay coil (401) connected in parallel and multiple current transformers (402). Each current transformer (402) corresponds to a bathroom exhaust fan. The current transformer (402) is used to trigger the relay coil (401) to be energized after the bathroom exhaust fan is powered on.

4. The bathroom exhaust fan linkage control system according to claim 1, characterized in that: The roof exhaust fan control circuit (3) includes a circuit breaker (301), a contactor (302) and a thermal relay (303) connected in sequence. The contactor (302) is used to open and close in coordination with the on and off states of the contactor coil (106).

Images