CN219868025U

CN219868025U - Water level detection device and range hood

Info

Publication number: CN219868025U
Application number: CN202320059847.1U
Authority: CN
Inventors: 胡玉波
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-10-20
Anticipated expiration: 2033-01-09

Abstract

The utility model relates to a water level detection device which comprises a box body and an air pressure sensor, wherein the box body is downwards opened and is internally provided with an air cavity, a notch is formed in the side wall of the bottom of the box body, and the air pressure sensor is arranged on the box body, and the detection end of the air pressure sensor is communicated with the air cavity. The water level detection device can avoid the influence of external dirt and the influence of water fluctuation, and the water level detection result is accurate. The utility model also relates to a range hood which comprises a shell, wherein an evaporator, a condenser, a water box and a water pump are arranged in the shell, a water inlet pipe which is in fluid communication with the evaporator is arranged on the water box, an outlet pipe which is in fluid communication with the condenser is connected with an outlet of the water pump, the water box is internally provided with the water level detection device, and the lower end of the box body in the water level detection device is contacted with the bottom surface of the water box. The range hood can accurately judge the water level of the condensed water in the water box, further control the conveying quantity in the condenser, and avoid the condition of water leakage based on the condensed water in the water box.

Description

Water level detection device and range hood

Technical Field

The utility model relates to a water level detection device and a range hood using the same.

Background

The kitchen temperature is cold in summer and winter, has the cooling and heating demand, in order to provide cold wind for the kitchen in summer, provides warm braw in winter, and various air conditioning type range hoods are invented, namely air conditioning component and range hood are integrated into an organic whole, open on the casing of range hood has the air conditioner air outlet. After the air conditioning mode is started, the condenser of the air conditioning component can generate heat, and if the condenser is not subjected to effective heat dissipation, the heat exchange effect of the condenser can be affected, so that the energy efficiency of the air conditioner is reduced. Meanwhile, the surface of the evaporator can condense condensed water, if the air conditioner condensed water is discharged, an external water pipe is needed, so that the installation cost is increased, the problems of long-term erosion of a wall body and dripping in an external environment can be caused, and if the air conditioner condensed water is accumulated in a machine body of the range hood, local water leakage is easily caused, and even the normal operation of the range hood is influenced. In order to solve the problem of condensed water, chinese patent application No. CN115342500A (202210002151.5) discloses a water pump flow control system, an air-conditioning type range hood and a control method thereof, wherein the disclosed water pump flow control system comprises a water box and a water pump arranged in the water box, a water inlet pipe is arranged on the water box, a water outlet pipe is externally connected with an outlet of the water pump, a water return pipe is arranged on the water box, a water level sensor for detecting the water level of the water box is arranged in the water box, the water pump further comprises a controller and a timing switch, the controller receives a water level feedback signal sent by the water level sensor, correspondingly controls the timing switch according to the water level feedback signal, and can further regulate the flow of the water pump through the on-off frequency of the timing switch. The water pump flow control system combines the water level sensor and the timing switch to control the frequency of water supply of the water pump, so as to regulate the flow of the water pump, ensure that the water box can be kept at a reasonable water level, face different environments and working states, and ensure the stability of the water box. After the air-conditioning type range hood is applied to the water pump flow control system, the evaporation amount of condensed water can be intelligently controlled through the control of the start-stop frequency of the water pump. The water level sensor adopted at present adopts a weighing structure or an ultrasonic structure. The weighing structure is difficult to realize on the whole machine and has strict requirements on water quality, and kitchen environment water quality is relatively poor and contains greasy dirt, so that on one hand, the detection on the water level is inaccurate, and on the other hand, the water level is deposited on the weighing structure and is difficult to clean. By adopting the ultrasonic structure, the range hood is larger in vibration during use, cannot be accurately detected when water level fluctuation exists, oil stains in condensed water also influence sound wave reflection, and the detection result is inaccurate.

Disclosure of Invention

The first technical problem to be solved by the utility model is to provide a water level detection device which can avoid the influence of external dirt and water fluctuation and has accurate detection result.

The second technical problem to be solved by the utility model is to provide a range hood applying the water level detection device aiming at the prior art.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: a water level detection device, characterized in that: the air pressure sensor is arranged on the box body, and the detection end of the air pressure sensor is communicated with the air cavity.

Preferably, the detection end of the air pressure sensor extends into the air cavity of the box body.

Preferably, the air pressure sensor is disposed at an upper portion of the case.

In order to balance the fluctuation of water and adsorb greasy dirt simultaneously, reduce the influence of greasy dirt to the air pressure sensor, it has the kickboard that can float along with the liquid level to spacing in the box body.

In order to reduce the fluctuation of the floating plate along with water and improve the balance capacity of the floating plate to the fluctuation of the water, a plurality of holes are formed in the floating plate.

In order to prevent the floating plate from sinking to contact the water container, the inner wall of the box body is circumferentially provided with at least two limiting pieces for limiting the lower limit position of the floating plate.

Preferably, the floating plate lower limit position is located in the middle of the notch.

In order to resist the influence of water flow fluctuation on the air pressure in the air cavity, a baffle plate which can float up and down is also limited on the box body corresponding to the notch position.

Preferably, the box body is provided with a limiting strip corresponding to two sides of the baffle, and the upper end of the baffle extends to two sides respectively to form limiting parts which can be propped against the limiting strip.

The utility model solves the second technical problem by adopting the technical proposal that: the utility model provides a range hood, includes the casing, install evaporimeter, condenser, water box and water pump in the casing, install the inlet tube with evaporimeter fluid intercommunication on the water box, the outlet connection of water pump has the outlet pipe with condenser fluid intercommunication, its characterized in that: the water box is internally provided with the water level detection device, and the lower end of the box body in the water level detection device is contacted with the bottom surface of the water box.

Compared with the prior art, the utility model has the advantages that: according to the water level detection device, based on the fact that the water flow enters the air cavity to cause the continuous increase of the liquid level, the compression of air in the air cavity in the box body is achieved, and then the air pressure sensor can judge the water level according to detected air pressure data.

The range hood with the water level detection device can accurately judge the water level of the condensed water in the water box, further control the conveying amount in the condenser and avoid the water leakage based on the condensed water in the water box.

Drawings

Fig. 1 is a perspective view of a water level detecting device in an embodiment of the present utility model.

Fig. 2 is a cross-sectional view of fig. 1.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1 and 2, the water level detection device in this embodiment includes a box body 1 and an air pressure sensor 2, wherein the box body 1 is opened downwards and has an air cavity inside, a gap 11 is formed on a side wall of the bottom of the box body 1, and the air pressure sensor 2 is disposed on the box body 1 and the detection end is communicated with the air cavity. When in use, the box body 1 is arranged in the liquid accommodating cavity, and the lower end of the box body 1 is propped against the inner bottom surface of the accommodating cavity. Liquid can enter the air cavity through the notch 11 at the bottom of the box body 1, the liquid can compress air in the air cavity along with the rise of the liquid level, the air pressure in the corresponding air cavity can also change along with the rise of the liquid level, the air pressure data detected by the air pressure sensor 2 are different, and therefore the corresponding liquid level condition can be determined according to specific air pressure data.

Specifically, the installation mode of the air pressure sensor 2 is determined according to a specific installation environment, for example, the detection end of the air pressure sensor 2 can be communicated with the air cavity of the box body 1 through a closed conduit, so that the detection of the air pressure in the air cavity is realized, and the detection end of the air pressure sensor 2 can also extend into the air cavity of the box body 1 to realize the detection of the air pressure. In this embodiment, the air pressure sensor 2 is directly disposed at the upper portion of the box body 1, and the detection end of the air pressure sensor 2 extends into the upper end region of the air cavity of the box body 1, so as to meet the detection of the maximum liquid level. Specifically, the air pressure sensor 2 in this embodiment is disposed at the top of the air cavity, and the detection end of the air pressure sensor 2 is disposed in the top area in the box body 1 in a penetrating manner from top to bottom.

For the application scene that liquid fluctuation is more severe, the fluctuation of liquid still can cause the fluctuation of the small amplitude of the detected air pressure, in order to balance the fluctuation of liquid, the fluctuation amount of liquid is weakened, and further the accuracy of liquid level detection is improved, in the embodiment, the floating plate 3 capable of floating along with the liquid level is limited in the box body 1, the peripheral outline of the floating plate 3 is consistent with the cross section outline of the air cavity in the box body 1, and when the liquid fluctuates, the fluctuation of liquid is balanced based on the floating plate 3, and the fluctuation range of the liquid is reduced. The fluctuation of the floating plate 3 along with water is reduced, the balance capacity of the floating plate to the fluctuation of the water is further improved, and a plurality of openings 31 are formed in the floating plate 3.

In addition, to the condition that dirt or greasy dirt exists, the floating plate 3 can also realize the absorption to the dirt and the greasy dirt, so that the floating plate 3 can be taken out from the box body 1 to be cleaned, and the accumulation of the dirt in the box body 1 is avoided for a long time.

In order to avoid the floating plate 3 sinking to contact the water container, particularly to avoid the adhesion of the floating plate 3 and the water container under the condition that dirt and oil stains are adsorbed on the floating plate 3, at least two limiting pieces 12 for limiting the lower limit position of the floating plate 3 are circumferentially arranged on the inner wall of the box body 1. The lower limit position of the floating plate 3 is positioned in the middle of the notch 11, so that when the floating plate 3 descends to the lower limit position, a gap is formed between the floating plate 3 and the inner bottom surface of the water container, and water is convenient to enter the gap, so that the floating plate 3 stably ascends in the box body 1.

In addition, the outside air is easy to enter the box body 1 based on the position of the notch 11, especially when the water level is lower than the height of the notch 11, at this time, the outside air is easy to cause the air pressure in the air cavity in the box body 1, in order to avoid the influence on the air pressure in the air cavity, and ensure the stability of the corresponding relationship between the air pressure in the air cavity and the water level, in this embodiment, the baffle 4 which can float up and down is also limited on the box body 1 corresponding to the position of the notch 11. In order to ensure the reliability of the up-and-down movement of the baffle 4, the two sides of the box body 1 corresponding to the baffle 4 are provided with limiting strips 13, and the upper ends of the baffle 4 extend to the two sides respectively to form limiting parts 41 which can be abutted against the limiting strips 13. Therefore, when the water level is lower and upper, the baffle 4 also floats up and down based on the water level condition, and then the notch 11 part above the water level can be shielded, so that the influence on the air pressure in the air cavity is avoided.

According to the water level detection device, based on the fact that the water flow enters the air cavity to cause the continuous increase of the liquid level, the compression of air in the air cavity in the box body 1 is achieved, and then the air pressure sensor 2 can judge the water level according to detected air pressure data. The water level detection device can be applied to various application environments in which the water level needs to be detected, particularly the application environments in which the water has dirt and water flow fluctuation are large, and the water level detection device is more accurate and reliable.

The utility model also relates to a range hood which comprises a shell, wherein an evaporator, a condenser, a water box and a water pump are arranged in the shell, a water inlet pipe which is in fluid communication with the evaporator is arranged on the water box, an outlet pipe which is in fluid communication with the condenser is connected with an outlet of the water pump, the water box is internally provided with the water level detection device, and the lower end of the box body 1 in the water level detection device is contacted with the bottom surface of the water box. The relative arrangement relation among the evaporator, the condenser, the water inlet pipe and the water box can adopt the structure of my prior patent application.

In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the utility model may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.

The term "fluid communication" as used herein refers to a spatial positional relationship between two components or parts (hereinafter collectively referred to as a first part and a second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow along a flow path from the first part to the second part or/and be transported to the second part, or the first part and the second part may be directly communicated with each other, or the first part and the second part may be indirectly communicated with each other through at least one third party, and the third party may be a fluid channel such as a pipe, a channel, a conduit, a flow guiding member, a hole, a groove, or the like, or a chamber allowing the fluid to flow through, or a combination thereof.

Claims

1. A water level detection device, characterized in that: the novel air pressure sensor comprises a box body (1) and an air pressure sensor (2), wherein the box body (1) is downwards opened and is internally provided with an air cavity, a notch (11) is formed in the side wall of the bottom of the box body (1), and the air pressure sensor (2) is arranged on the box body (1) and the detection end is communicated with the air cavity.

2. The water level detection apparatus according to claim 1, wherein: the detection end of the air pressure sensor (2) extends into the air cavity of the box body (1).

3. The water level detection apparatus according to claim 1, wherein: the air pressure sensor (2) is arranged at the upper part of the box body (1).

4. A water level detection apparatus according to any one of claims 1 to 3, wherein: a floating plate (3) capable of floating along with the liquid level is limited in the box body (1).

5. The water level detection apparatus according to claim 4, wherein: the floating plate (3) is provided with a plurality of holes (31).

6. The water level detection apparatus according to claim 4, wherein: and limiting pieces (12) for limiting the lower limit positions of the floating plates (3) are arranged on the inner wall of the box body (1) along the circumferential direction.

7. The water level detection apparatus according to claim 6, wherein: the lower limit position of the floating plate (3) is positioned in the middle of the notch (11).

8. A water level detection apparatus according to any one of claims 1 to 3, wherein: the box body (1) is also limited with a baffle plate (4) which can float up and down along the position corresponding to the notch (11).

9. The water level detection apparatus according to claim 8, wherein: limiting strips (13) are arranged on the box body (1) corresponding to the two sides of the baffle plate (4), and limiting parts (41) which can be abutted against the limiting strips (13) are respectively arranged at the upper ends of the baffle plate (4) in an extending mode towards the two sides.

10. The utility model provides a range hood, includes the casing, install evaporimeter, condenser, water box and water pump in the casing, install the inlet tube with evaporimeter fluid intercommunication on the water box, the outlet connection of water pump has the outlet pipe with condenser fluid intercommunication, its characterized in that: the water box is internally provided with the water level detection device as claimed in any one of claims 1 to 9, and the lower end of the box body (1) in the water level detection device is contacted with the bottom surface of the water box.