Testing device for impeller in range hood

Abstract

A testing device for an impeller in a range hood comprises a testing box which is hollow inside to form a cavity; the motor is installed in the upper side space of the cavity, a motor rotating shaft extends horizontally, and the motor rotating shaft is provided with a locking piece used for restraining the impeller to be tested so that the impeller can rotate along with the motor rotating shaft; a water inlet of the water pipe is located in the bottom space of the cavity, a water outlet of the water pipe is located in the top space of the cavity and faces the motor rotating shaft, a space used for installing an impeller to be tested is formed between the water outlet and the motor rotating shaft, and meanwhile, a water pump is arranged on the water pipe; therefore, water in the bottom space of the cavity can be pumped into the water pipe and sprayed to the impeller to be tested from the water outlet of the water pipe. The testing device can continuously test the impeller to be tested, and the testing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of testing device, specifically relates to a testing device for the impeller in the range hood. BACKGROUND

[0002] The cleaning problem of the range hood at present stage is the main concern of product, for this, people develop the range hood with self-cleaning function or develop the easy-to-clean coating formula and apply to the fan impeller of range hood, make the cleaning effect better. But when the impeller with easy-to-clean coating is self-cleaning, the impact of water flow and the size of water pressure when impacting can cause the reliability of coating to reduce, such as the phenomenon of coating peeling, blistering and other adverse phenomena, so the impeller with easy-to-clean coating needs to be tested for water pressure impact resistance.

[0003] For water pressure impact resistance test, the present testing method is to install the impeller coated with easy-to-clean coating into the range hood with self-cleaning function for testing. Water pressure impact resistance test needs to be tested in cycles, and the test cycle is relatively long, but due to the program problem of the range hood, the action unrelated to the test needs to be carried out, so the test efficiency is affected. In addition, it is cumbersome to disassemble and assemble the impeller on the range hood, and the water storage capacity of the range hood is limited. After the water storage is used up, the test needs to be paused, and then the test is continued after adding water, which causes time and manpower consumption, and the test cannot be continuously carried out, affecting the test period. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem in the prior art, and provides a testing device for the impeller in the range hood to improve the test efficiency.

[0005] The utility model adopts the technical scheme for solving the above technical problem: a testing device for the impeller in the range hood, characterized by comprising:

[0006] A test box is internally hollow to form a chamber;

[0007] A motor is installed in the upper space of the chamber, the motor shaft extends horizontally, and a locking piece is arranged on the motor shaft for restraining the impeller to be tested so that the impeller can rotate with the motor shaft;

[0008] A water pipe has a water inlet in the bottom space of the chamber and a water outlet in the top space of the chamber, which faces the motor shaft, and has a space for installing the impeller to be tested between the water outlet and the motor shaft. At the same time, a water pump is arranged on the water pipe to pump the water in the bottom space of the chamber into the water pipe and spray it from the water outlet of the water pipe to the impeller to be tested.

[0009] In this way, the impeller to be tested can be installed on the motor rotating shaft, and then the water pump is opened, so that the impeller can be flushed in the rotating state, and after the water jet from the water outlet of the water pipe flushes the impeller, the water returns to the bottom space of the chamber under the action of gravity, thereby realizing water circulation, so that the test device can continuously test the impeller to be tested, and the test efficiency is improved.

[0010] Preferably, the water outlet of the water pipe faces downward and is located above the motor rotating shaft.

[0011] Further, the motor is movably arranged in the test box, so that the distance between the motor rotating shaft and the water outlet of the water pipe can be adjusted to adapt to the test of impellers with different outer diameters.

[0012] Further, the test device further comprises a sensor for detecting the distance between the water outlet of the water pipe and the impeller to be tested, a controller connected with the sensor, and a driving mechanism connected with the controller and used for driving the motor to move up and down. In this way, the position of the motor can be automatically adjusted according to the distance between the water outlet of the water pipe and the impeller to be tested detected by the sensor.

[0013] Preferably, the motor and the side wall of the test box are matched by a sliding block and a sliding groove extending upward and downward, and the driving mechanism comprises:

[0014] a screw nut assembly, a screw rod in the screw nut assembly extending upward and downward, and a nut in the screw nut assembly connected with the motor;

[0015] a power element, a power output end of the power element connected with the screw rod, and the power element used for driving the screw rod to rotate around the axis of the screw rod.

[0016] Preferably, the power element is an existing driving motor.

[0017] More preferably, the sliding block and the sliding groove are matched as a group, there are two groups, and the two groups are arranged side by side on both sides of the screw nut assembly. In this way, the stability of the overall structure is improved, and the motor can stably move up and down.

[0018] Preferably, the sensor is an infrared distance sensor.

[0019] In the above scheme, in order to facilitate disassembly and assembly, preferably, the end of the motor rotating shaft is provided with external threads, and the locking element is a locking nut threadedly connected to the outer periphery of the motor rotating shaft. When the impeller is sleeved on the outer periphery of the motor rotating shaft, the locking nut can be tightened, which is convenient to operate. The cooperation of the locking nut, the impeller and the motor rotating shaft is consistent with or close to the installation structure of the impeller on the range hood, so that the test result of the test device has more reference value.

[0020] In the above schemes, preferably, the test box comprises:

[0021] A box body, the upper part of the side wall of which is open, for the impeller to be tested to enter and exit the box body;

[0022] A door body arranged at the opening of the box body to open or close the opening.

[0023] When the door body closes the opening, water splashing out during the test can be avoided; and when the door body opens the opening, the impeller to be tested can be conveniently taken in and out of the box body.

[0024] To facilitate observation of the situation in the test box, preferably, the box body and / or the door body are transparent.

[0025] Compared with the prior art, the test device of the present application has the following advantages: during the test, the impeller to be tested can be installed on the rotating shaft of the motor, and then the water pump is opened, so that the impeller can be washed under the rotating state of the impeller, and after the water flow from the water outlet of the water pipe washes the impeller, it returns to the bottom space of the chamber under the action of its own gravity, thereby realizing water circulation, so that the test device of the present application can continuously test the impeller to be tested, and the test efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 Fig. 1 is a structural schematic view of the test device of the present application;

[0027] Figure 2 Fig. 2 is a use state view of the test device of the present application (the upper side of the right side wall of the box body is omitted);

[0028] Figure 3 Fig. 3 is a longitudinal sectional view of the test device of the present application; Figure 2

[0029] Fig. 4 is a transverse sectional view of the test device of the present application; Figure 4 Figure 2 Fig. 5 is a transverse sectional view of the test device of the present application (the impeller is separated from the rotating shaft of the motor).

[0030] Figure 5 Figure 2 Fig. 6 is a transverse sectional view of the test device of the present application (the impeller is separated from the rotating shaft of the motor). DETAILED DESCRIPTION

[0031] The present application will be further described in detail below with reference to the embodiments of the drawings.

[0032] As shown in Fig. 1, it is a preferred embodiment of a test device for an impeller in an oil smoke extractor according to the present application, which comprises a test box 1, a motor 2, a water pipe 3, and a driving mechanism 5. Figures 1-5

[0033] ​​​The test box 1 comprises a box body 1a and a door body 1b. The box body 1a is internally hollow to form a chamber 10. An upper portion of a front side wall of the box body 1a is provided with an opening 100 for the impeller 4 to be tested to enter or exit the box body 1a. The door body 1b is rotatably connected to the opening of the box body 1a to open or close the opening 100. In this embodiment, the test box 1 is transparent so that the tester can observe the inside of the test box 1 from outside.

[0034] The water inlet 31 of the water pipe 3 is located in the bottom space of the chamber 10, and the water outlet 32 of the water pipe 3 is downwardly located in the top space of the chamber 10. Meanwhile, the water pump 33 is arranged on the water pipe 3 to pump the water in the bottom space of the chamber 10 into the water pipe 3 and spray downwardly from the water outlet 32 of the water pipe 3.

[0035] The motor 2 is installed in the upper space of the chamber 10 below the water outlet 32 of the water pipe by the mounting seat 20, and the motor shaft 21 extends forwardly opposite to the door body 1b. The front end of the motor shaft 21 is externally threaded and is screwed with the locking nut as the locking member 22. Before testing, the locking nut is removed, the impeller 4 to be tested is sleeved on the periphery of the motor shaft 21, and then the locking nut is installed and tightened to constrain the impeller 4 to be tested on the motor shaft 21 and enable the impeller 4 to rotate with the motor shaft 21. At this time, the impeller 4 to be tested is located directly below the water outlet 32 of the water pipe 3 and can be washed by the water flow sprayed from the water outlet 32.

[0036] In the embodiment, the mounting seat 20 is movably arranged in the test box 1 to adjust the distance between the impeller 4 to be tested and the water outlet 32 of the water pipe 3. Specifically, the rear side of the chamber 10 is provided with a sliding groove 11 extending upward and downward, and the mounting seat 20 is provided with a sliding block 23 movable along the sliding groove 11. The sliding groove 11 and the sliding block 23 are matched as a group, and there are two groups arranged in the test box 1. In order to automatically adjust the height of the mounting seat 20 according to the distance between the water outlet 32 of the water pipe 3 and the impeller 4 to be tested, the embodiment further comprises a sensor (an existing infrared distance measuring sensor) for detecting the distance between the water outlet 32 of the water pipe 3 and the impeller 4 to be tested, a controller connected with the sensor, and a driving mechanism 5 connected with the controller and used for driving the mounting seat 20 to move upward and downward. The driving mechanism 5 comprises a screw nut assembly and a power member 53 (an existing driving motor), the screw rod 51 in the screw nut assembly extends upward and downward and is located between the two groups of sliding grooves 11 and sliding blocks 23, and the upper end of the screw rod 51 is connected with the power output end of the power member 53, and the screw rod 51 can rotate around its axis under the drive of the power member 53. The nut 52 in the screw nut assembly is connected with the mounting seat 20. Thus, the screw rod 51 can drive the nut 52, the mounting seat 20 connected with the nut, and the motor 2 to move upward and downward through the rotation of the screw rod 51. Therefore, the embodiment can be applied to the test of impellers with different outer diameters, and before the test, the distance between the impeller and the water outlet 32 of the water pipe can be adjusted through the upward and downward movement of the mounting seat 20 and the motor.

[0037] During the test, the motor 2 is started and the water pump 33 is turned on at the same time, so that the water pressure impact test of the rotating impeller can be performed. Meanwhile, the existing counter is installed in the embodiment to complete the statistics of the test time (such as the running time of the motor 2).

[0038] In the description and claims of the present application, terms are used to describe various example structures and elements of the present application as used by those skilled in the art are used to describe various example structures and elements of the present application. However, the use of these terms is merely for convenience and is not intended to limit the present application. For example, the terms "upper" and "lower" are used herein for convenience only and are not necessarily limited by the orientation of the device as shown in the figures.

Claims

1. A testing device for an impeller in a range hood, characterized in that The utility model relates to a test box for testing impeller, comprising: a test box (1) internally hollowed to form a chamber (10); a motor (2) installed in the upper space of the chamber (10), with a motor rotating shaft (21) extending horizontally, and a locking member (22) provided on the motor rotating shaft (21) for restraining a to-be-tested impeller (4) to enable the impeller to rotate with the motor rotating shaft (21); a water pipe (3) with a water inlet (31) located in the bottom space of the chamber (10) and a water outlet (32) located in the top space of the chamber (10) and facing the motor rotating shaft (21), with a space between the water outlet (32) and the motor rotating shaft (21) for installing the to-be-tested impeller (4), and a water pump (33) provided on the water pipe (3) to pump water in the bottom space of the chamber (10) into the water pipe (3) and spray the to-be-tested impeller (4) from the water outlet (32) of the water pipe (3).

2. The test device of claim 1, wherein: The water outlet (32) of the water pipe (3) faces downward and is located above the motor rotating shaft (21).

3. The test device of claim 2, wherein: The motor (2) is movably arranged in the test box (1).

4. The test device of claim 3, wherein: Further comprising a sensor for detecting the distance between the water outlet (32) of the water pipe (3) and the to-be-tested impeller (4), a controller connected to the sensor, and a driving mechanism (5) connected to the controller for driving the motor (2) to move up and down.

5. The test device of claim 4, wherein: The motor (2) is inserted into the side wall of the test box (1) through a sliding block (23) and a sliding groove (11) extending upward and downward, and the driving mechanism (5) comprises: a screw nut assembly, with a screw rod (51) extending upward and downward in the screw nut assembly, and a nut (52) connected to the motor (2) in the screw nut assembly; a power member (53) with a power output end connected to the screw rod (51) for driving the screw rod (51) to rotate around its axis.

6. The test device of claim 5, wherein: The sliding block (23) and the sliding groove (11) are matched as a group, and there are two groups arranged side by side on both sides of the screw nut assembly.

7. The test device of claim 4, wherein: The sensor is an infrared distance sensor.

8. The test device of claim 1, wherein: The end of the motor rotating shaft (21) is provided with external threads, and the locking member (22) is a locking nut threadedly connected to the outer periphery of the motor rotating shaft (21).

9. The test device of any one of claims 1-8, wherein: The test box (1) comprises: a box body (1a) with an opening (100) in the upper part of the side wall for the to-be-tested impeller (4) to enter and exit the box body (1a); a door body (1b) provided at the opening of the box body (1a) to open or close the opening (100).

10. The test device of claim 9, wherein: The box body (1a) and / or the door body (1b) are transparent.

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