Oil cup oil quantity detection device and range hood

Abstract

The utility model relates to an oil cup oil quantity detection device and a range hood, and the oil cup oil quantity detection device comprises an infrared emitter arranged in an oil cup; the infrared receiver is arranged in the oil cup, the infrared receiver and the infrared emitter are oppositely arranged in a spaced mode, and the infrared receiver can receive infrared rays emitted by the infrared emitter; the device is characterized in that the infrared transmitter and the infrared receiver are both restrained on the oil cup in a manner of moving up and down. The device has the advantages that the infrared transmitter and the infrared receiver are both restrained on the oil cup in the mode of being capable of moving up and down, so that the infrared transmitter and the infrared receiver move at the same time, and when the infrared receiver can receive infrared rays emitted by the infrared transmitter, the current position of the infrared receiver is the corresponding liquid level of the oil cup. Therefore, the oil cup oil quantity detection device is simple in structure, convenient to install, high in detection precision and capable of detecting the current liquid level in the oil cup.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to an oil cup oil quantity detection device and a range hood. Background Art

[0002] Range hoods are a commonly used kitchen appliance. Range hoods work based on the principle of fluid dynamics. A centrifugal fan installed inside the range hood generates negative pressure suction, which draws the oil smoke under the range hood into the centrifugal fan, accelerates the fan, and guides it out of the room, thereby purifying the kitchen environment.

[0003] When the range hood discharges oil smoke, most of the grease will be separated. Therefore, an oil cup is often installed at the bottom of the smoke collecting hood of the range hood to collect the separated grease. In order to prevent the excessive grease collected in the oil cup from overflowing, an observation window is usually provided on the oil cup in the prior art. Although the liquid level in the oil cup can be observed through the observation window, after the range hood is used for a long time, the oil stains adhere to the observation window and the user cannot see the liquid level in the oil cup clearly.

[0004] In order to obtain the oil amount or liquid level of the oil cup, there are many ways to detect the oil amount or liquid level of the oil cup in the prior art. For example, the Chinese utility model patent with patent number ZL201821621174.X (authorization announcement number CN209147180U) discloses a range hood with an oil cup oil amount detection device. Although the range hood can detect the gravity information of the oil cup through the gravity sensor assembly, and output it to the display module after processing by the main control module, and the display module displays the dirty oil amount information, the range hood has the following usage limitations: Since the oil cup is usually detachably installed at the bottom of the range hood housing, it is difficult to independently and accurately detect the gravity information of the oil cup using the gravity sensor assembly, and its detection result is easily affected by the range hood.

[0005] In order to solve the technical problems existing in the gravity sensor assembly, there is another Chinese invention patent application "Liquid Container" with application publication number CN107242229A (application number 201710631953.1), in which a liquid level detector is provided in the disclosed liquid container, and the liquid level detector includes: a buoy body placed in the accommodating chamber and floating with the liquid level height; a detection component placed outside the accommodating box, which generates an indication of a low liquid level according to whether the buoy body is detected; the detection component includes: a matching infrared transmitter and an infrared receiver, and the infrared transmitter and the infrared receiver are arranged in a straight line with the buoy body; when the buoy body drops to a certain height, the infrared receiver receives the infrared signal emitted by the infrared transmitter, and the infrared receiver generates a signal indicating a low liquid level. The liquid level detector can effectively ensure the detection accuracy, but it can only be used to detect the liquid level at a fixed position, that is, it can only determine whether the liquid level has reached the set position. In addition, the installation requirements for the infrared receiver and the infrared transmitter in the liquid level detector are relatively high, and they need to be installed in a straight line, and the installation is relatively complicated.

[0006] Therefore, it is necessary to further improve the prior art. Utility Model Content

[0007] The first technical problem to be solved by the utility model is to provide an oil cup oil level detection device with high detection accuracy and capable of detecting the current liquid level in the oil cup in view of the above-mentioned prior art.

[0008] The second technical problem to be solved by the utility model is to provide a range hood with the above oil cup oil quantity detection device.

[0009] The technical solution adopted by the utility model to solve the above-mentioned first technical problem is: an oil cup oil level detection device, comprising:

[0010] Infrared transmitter, located in the oil cup;

[0011] An infrared receiver is arranged in the oil cup and spaced apart from the infrared transmitter, and the infrared receiver can receive infrared rays emitted by the infrared transmitter;

[0012] The invention is characterized in that the infrared transmitter and the infrared receiver are both constrained on the oil cup in a manner of being able to move up and down.

[0013] Optionally, the infrared transmitter and the infrared receiver are arranged to be able to move independently or synchronously.

[0014] In order to realize the movement of the infrared transmitter and the infrared receiver, the oil cup oil level detection device also includes a first driving mechanism for driving the infrared transmitter to move up and down and a second driving mechanism for driving the infrared receiver to move up and down.

[0015] In order to realize automatic control of oil quantity detection, the oil cup oil quantity detection device also includes a controller, which is electrically connected to the first drive mechanism, the second drive mechanism and the infrared receiver. The controller is configured to control the first drive mechanism and the second drive mechanism to perform corresponding actions according to the signal received by the infrared receiver.

[0016] Specifically, the infrared receiver has the following two states:

[0017] In the first state, the infrared receiver receives infrared rays emitted by the infrared transmitter, and the controller controls the first driving mechanism and the second driving mechanism to stop moving;

[0018] In the second state, the infrared receiver does not receive the infrared rays emitted by the infrared transmitter, and the controller simultaneously controls the first driving mechanism and the second driving mechanism to move the infrared receiver and the infrared transmitter simultaneously, thereby enabling the infrared receiver to receive the infrared rays emitted by the infrared transmitter.

[0019] The controller controls the first driving mechanism and the second driving mechanism to perform corresponding actions according to the signal received by the infrared receiver, thereby realizing automatic detection of the oil amount in the oil cup.

[0020] In order to facilitate the automatic control of the infrared transmitter, the controller is also electrically connected to the infrared transmitter.

[0021] The structure of the above-mentioned first driving mechanism can be of many kinds. Preferably, the first driving mechanism includes a first motor and a first screw rod driven by the power output shaft of the first motor, and the infrared emitter is correspondingly installed on the first screw rod. The first motor and the first screw rod both extend in the up and down directions. The infrared emitter can move up and down with the first screw rod under the drive of the first motor.

[0022] Preferably, the second driving mechanism has the same structure as the first driving mechanism, the second driving mechanism includes a second motor and a second screw rod drivingly connected to the power output shaft of the second motor, the infrared receiver is correspondingly installed on the second screw rod, the first motor and the first screw rod both extend in the up and down directions, and the infrared receiver can move up and down with the first screw rod under the drive of the second motor.

[0023] In order to directly obtain the oil volume in the oil cup according to the position where the infrared receiver just receives the infrared rays emitted by the infrared transmitter, the oil cup is also provided with scale lines for indicating different oil volumes.

[0024] The technical solution adopted by the utility model to solve the above-mentioned second technical problem is: a range hood, comprising a shell and an oil cup detachably mounted on the bottom of the shell, characterized in that: the oil cup uses the above-mentioned oil cup oil quantity detection device to detect the oil quantity.

[0025] Compared with the prior art, the utility model has the advantages that: by constraining the infrared transmitter and the infrared receiver on the oil cup in a manner that they can move up and down, the infrared transmitter and the infrared receiver can move simultaneously until the infrared receiver can receive the infrared rays emitted by the infrared transmitter, and the current position of the infrared receiver corresponds to the liquid level of the oil cup. Therefore, the oil cup oil level detection device has a simple structure, is easy to install, has high detection accuracy, and can detect the current liquid level in the oil cup. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the range hood in the embodiment of the utility model;

[0027] Figure 2 for Figure 1 Structural diagram of the oil level detection device of the oil cup;

[0028] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0029] Figure 4 for Figure 2 Enlarged view of point B in the middle. DETAILED DESCRIPTION

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0031] like Figure 1 As shown, the range hood in this embodiment includes a shell 5, an oil cup 3 detachably mounted on the bottom of the shell 5, and an oil cup oil level detection device. In the prior art, the oil cup 3 is usually installed in an insertion manner. The installation method of the oil cup 3 is a prior art and will not be elaborated here. The oil cup 3 is also provided with scale lines for indicating different oil levels (not shown in the figure), and the oil cup oil level detection device is used to detect the oil level in the oil cup 3.

[0032] like Figures 2 to 4 As shown, the oil cup oil level detection device in this embodiment includes an infrared transmitter 1 and an infrared receiver 2. The infrared transmitter 1 and the infrared receiver 2 are both arranged in the oil cup 3. The infrared receiver 2 and the infrared transmitter 1 are arranged relatively spaced apart. The infrared receiver 2 can receive infrared rays emitted by the infrared transmitter 1; and the infrared transmitter 1 and the infrared receiver 2 are both constrained on the oil cup 3 in a manner that they can move up and down. The above-mentioned infrared transmitter 1 and the infrared receiver 2 are arranged to be able to move independently or synchronously.

[0033] In this embodiment, the oil cup oil level detection device also includes a first driving mechanism 41 for driving the infrared transmitter 1 to move up and down, a second driving mechanism 42 for driving the infrared receiver 2 to move up and down, and a controller (not shown in the figure). The controller is electrically connected to the first driving mechanism 41, the second driving mechanism 42, the infrared transmitter 1 and the infrared receiver 2. The controller is configured to: control the first driving mechanism 41 and the second driving mechanism 42 to perform corresponding actions according to the signal received by the infrared receiver 2.

[0034] like Figure 3 and Figure 4 As shown, in this embodiment, the second drive mechanism 42 has the same structure as the first drive mechanism 41. The first drive mechanism 41 includes a first motor 411 and a first screw rod 412 connected to the power output shaft of the first motor 411. The infrared transmitter 1 is correspondingly installed on the first screw rod 412. The first motor 411 and the first screw rod 412 extend in the up-down direction. The infrared transmitter 1 can move up and down with the first screw rod 412 under the drive of the first motor 411. The second drive mechanism 42 includes a second motor 421 and a second screw rod 422 connected to the power output shaft of the second motor 421. The infrared receiver 2 is correspondingly installed on the second screw rod 422. The first motor 411 and the first screw rod 412 extend in the up-down direction. The infrared receiver 2 can move up and down with the first screw rod 412 under the drive of the second motor 421. In this embodiment, the second drive mechanism 42 and the first drive mechanism 41 both adopt the screw transmission method, and its principle is the existing technology, which will not be elaborated here.

[0035] In this embodiment, the infrared receiver 2 has the following two states: in the first state, the infrared receiver 2 receives the infrared rays emitted by the infrared transmitter 1, and the controller controls the first drive mechanism 41 and the second drive mechanism 42 to stop moving (specifically, controls the first motor 411 and the second motor 421 to stop rotating); in the second state, the infrared receiver 2 does not receive the infrared rays emitted by the infrared transmitter 1, and the controller controls the first drive mechanism 41 and the second drive mechanism 42 to move (specifically, controls the first motor 411 and the second motor 421 to rotate), so that the infrared receiver 2 and the infrared transmitter 1 move at the same time, and then the infrared receiver 2 can receive the infrared rays emitted by the infrared transmitter 1. Therefore, the controller can obtain the current oil amount in the oil cup by identifying the oil amount scale line corresponding to the position of the infrared receiver 2 in the first state. In addition, when the oil amount scale line is at the highest scale line, the controller can issue an alarm indication, or the controller is connected to the control unit in the range hood, at which time the range hood is controlled not to be turned on, or the display unit of the range hood displays the information that the oil cup is full of oil.

Claims

1. An oil cup oil level detection device, comprising: An infrared transmitter (1) is disposed in the oil cup (3); An infrared receiver (2) is disposed in the oil cup (3) and is spaced apart from the infrared transmitter (1), wherein the infrared receiver (2) is capable of receiving infrared rays emitted by the infrared transmitter (1); The invention is characterized in that the infrared transmitter (1) and the infrared receiver (2) are both restrained on the oil cup (3) in a manner that they can move up and down.

2. The oil cup oil level detection device according to claim 1, characterized in that: The infrared transmitter (1) and the infrared receiver (2) are arranged to be able to move independently or synchronously.

3. The oil cup oil level detection device according to claim 2, characterized in that: The oil cup oil level detection device also includes a first driving mechanism (41) for driving the infrared transmitter (1) to move up and down, and a second driving mechanism (42) for driving the infrared receiver (2) to move up and down.

4. The oil cup oil level detection device according to claim 3, characterized in that: The oil cup oil level detection device further comprises a controller, which is electrically connected to the first drive mechanism (41), the second drive mechanism (42) and the infrared receiver (2), and is configured to control the first drive mechanism (41) and the second drive mechanism (42) to perform corresponding actions according to a signal received by the infrared receiver (2).

5. The oil cup oil level detection device according to claim 4, characterized in that: The infrared receiver (2) has the following two states: In the first state, the infrared receiver (2) receives infrared rays emitted by the infrared transmitter (1), and the controller controls the first drive mechanism (41) and the second drive mechanism (42) to stop moving; In the second state, the infrared receiver (2) does not receive the infrared rays emitted by the infrared transmitter (1), and the controller simultaneously controls the first drive mechanism (41) and the second drive mechanism (42) to operate, so that the infrared receiver (2) and the infrared transmitter (1) move simultaneously, thereby enabling the infrared receiver (2) to receive the infrared rays emitted by the infrared transmitter (1).

6. The oil cup oil level detection device according to claim 5, characterized in that: The controller is also electrically connected to the infrared transmitter (1).

7. The oil cup oil level detection device according to any one of claims 3 to 6, characterized in that: The first driving mechanism (41) comprises a first motor (411) and a first screw rod (412) drivingly connected to a power output shaft of the first motor (411); the infrared transmitter (1) is correspondingly mounted on the first screw rod (412); the first motor (411) and the first screw rod (412) both extend in an up-down direction; and the infrared transmitter (1) can move up-down together with the first screw rod (412) under the drive of the first motor (411).

8. The oil cup oil level detection device according to claim 7, characterized in that: The second driving mechanism (42) has the same structure as the first driving mechanism (41). The second driving mechanism (42) comprises a second motor (421) and a second screw rod (422) drivingly connected to a power output shaft of the second motor (421). The infrared receiver (2) is correspondingly mounted on the second screw rod (422). The first motor (411) and the first screw rod (412) both extend in the up-down direction. The infrared receiver (2) can move up-down together with the first screw rod (412) under the drive of the second motor (421).

9. The oil cup oil level detection device according to any one of claims 1 to 6, characterized in that: The oil cup (3) is also provided with scale lines for indicating different oil quantities.

10. A range hood, comprising a housing (5) and an oil cup (3) detachably mounted on the bottom of the housing (5), characterized in that: The oil cup (3) uses an oil cup oil level detection device as described in any one of claims 1 to 9 to detect the oil level.

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