A booster pump assembly and water purifier with vibration and noise reduction

Abstract

The present disclosure relates to a booster pump assembly and a water purifier with vibration reduction and noise reduction, comprising: a fixing frame and a booster pump, the fixing frame having an upper wall; the booster pump comprising a first cover body and a second cover body, the second cover body having a water storage chamber and a water outlet end, the water outlet end being connected to the water storage chamber; the booster pump is arranged on the upper wall in a vertical direction with the second cover body facing downward, and the upper wall provides an upward support force for the booster pump; the first cover body has at least one fixing position, and the upper wall has at least one mounting hole corresponding to the at least one fixing position; the booster pump assembly also includes at least one fastener corresponding to the at least one mounting hole, each fastener passes through the corresponding mounting hole and is fastened to the corresponding fixing position to fix the booster pump to the upper wall; in the axial direction of the booster pump, the fastener and the upper wall are in soft contact to achieve vibration reduction and noise reduction of the booster pump. The booster pump assembly and water purifier with vibration reduction and noise reduction disclosed herein can reduce noise.

Description

[0001] This application is a divisional application of the invention patent application "A booster pump assembly with vibration reduction and noise reduction" with application number 201710744256.7 and application date on August 25, 2017. Technical Field

[0002] The present invention relates to the field of shock-absorbing structure design of a water purifier booster pump, and in particular to a shock-absorbing and noise-reducing booster pump assembly and a water purifier. Background Art

[0003] Currently, booster pumps used in water purifiers typically utilize rubber pads with a hardness of 50-70 degrees for vibration and noise reduction, and are then secured with bolts. However, the tightening force of the bolts is often too high, causing the rubber pads to be over-compressed. This creates a hard contact between the booster pump and the mounting bracket, rendering the rubber pads ineffective in their vibration and noise reduction capabilities. Figure 1 FIG. 1 shows a schematic structural diagram of a booster pump in the prior art. Figure 1 As shown, the booster pump 120' may include a first cover 121' and a second cover 122, and the first cover 121' and the second cover 122 are respectively disposed at two opposite ends of the booster pump 120'. The second cover 122 has a water storage chamber, a water inlet end 126, and a water outlet end 127, and the water inlet end 126 and the water outlet end 127 are respectively connected to the water storage chamber. Figure 2 Shown Figure 1 Schematic internal structure diagram at A in the figure. Figure 2 As shown, the water storage chamber may include three cavities 125 , and the three cavities 125 may be evenly distributed around the space at the bottom of the second cover 122 . Summary of the Invention

[0004] The inventors of this application have discovered that in the prior art, booster pumps are usually placed horizontally, which brings some problems. For example, the water in the water storage chamber of the booster pump will not always be in a state of filling the water storage chamber, so there is usually water and air in the water storage chamber at the same time, which causes the booster pump to generate greater vibration and noise when working.

[0005] An object of the present invention is to provide a booster pump assembly with vibration reduction and noise reduction, so as to solve the technical problem that the booster pump assembly in the prior art has an insignificant vibration reduction and noise reduction effect.

[0006] Solutions for solving problems

[0007] A first embodiment of the present disclosure provides a booster pump assembly with vibration and noise reduction, characterized by comprising:

[0008] a fixed frame having an upper wall;

[0009] A booster pump comprising a first cover and a second cover, wherein the first cover and the second cover are respectively disposed at two opposite ends of the booster pump, and the second cover has a water storage cavity and a water outlet, wherein the water outlet is in communication with the water storage cavity;

[0010] The booster pump is arranged on the upper wall in a vertical direction with the second cover body facing downward, and the upper wall provides an upward supporting force for the booster pump to achieve vibration reduction and noise reduction of the booster pump;

[0011] The first cover has at least one fixing position, and the upper wall has at least one mounting hole corresponding to the at least one fixing position;

[0012] The boost pump assembly also includes at least one fastener corresponding to the at least one mounting hole, each fastener passes through the corresponding mounting hole and is fastened at a corresponding fixed position to fix the boost pump on the upper wall; in the axial direction of the boost pump, the fastener is in soft contact with the upper wall to achieve vibration reduction and noise reduction of the boost pump.

[0013] Preferably, the vibration-reducing and noise-reducing booster pump assembly further comprises:

[0014] At least one shock-absorbing pad is provided, each shock-absorbing pad being in contact with or close to the upper wall to achieve soft contact between the fastener and the upper wall.

[0015] Preferably, the fastener is spaced apart from the mounting hole;

[0016] Preferably, the shock-absorbing pad is located between the fastener and the mounting hole.

[0017] Preferably, each of the shock-absorbing pads further includes at least one shock-absorbing groove.

[0018] Preferably, the shock-absorbing pad further comprises:

[0019] a hollow inner cavity for allowing the fastener to pass therethrough to fix the shock-absorbing pad at the fixing position;

[0020] The minimum diameter of the hollow inner cavity is greater than the diameter of the fastener, so as to absorb the vibration force generated by the booster pump along the radial direction of the shock-absorbing pad.

[0021] Preferably, the shock-absorbing pad further comprises:

[0022] a plurality of shock-absorbing grooves, which are provided on the outer surface and / or the inner surface of the shock-absorbing pad to absorb the shock force generated by the booster pump along the axial direction of the shock-absorbing pad;

[0023] Each shock-absorbing groove is arranged around the outer surface or inner surface of the shock-absorbing pad along the circumference of the shock-absorbing pad;

[0024] Preferably, the shock-absorbing grooves are provided on both the outer surface and the inner surface of the shock-absorbing pad;

[0025] Wherein, any shock-absorbing groove provided on the outer surface of the shock-absorbing pad and any shock-absorbing groove provided on the inner surface of the shock-absorbing pad are staggered in the axial direction of the shock-absorbing pad.

[0026] Preferably, each of the shock-absorbing pads comprises:

[0027] a first end portion configured to pass through the mounting hole to contact or approach the fixing position;

[0028] a second end portion extending in a direction opposite to the first end portion;

[0029] Preferably, each of the shock-absorbing pads further comprises: a limiting groove, arranged around the outer surface of the shock-absorbing pad along the circumference of the shock-absorbing pad, for clamping the shock-absorbing pad on the upper wall so that the first end portion and the second end portion are respectively located on both sides of the upper wall;

[0030] Preferably, the shock-absorbing pad further comprises an upper skirt and a lower skirt; the upper skirt and the lower skirt together define the limiting groove;

[0031] Preferably, the outer diameter of the upper skirt is larger than the outer diameter of the lower skirt, and the outer diameter of the lower skirt is slightly larger than the diameter of the mounting hole.

[0032] Preferably, the booster pump assembly for vibration reduction and noise reduction further comprises: a limiting assembly, the limiting assembly comprising:

[0033] An upper limit assembly is provided between the first cover body and the upper wall, and is used for limiting the first cover body to the upper wall of the fixing frame.

[0034] Preferably, the upper wall has a positioning groove, and the first cover has a protrusion, and the protrusion corresponds to the positioning groove;

[0035] One end of the upper limit element is sleeved on the protrusion, and the other end is embedded in the positioning groove;

[0036] Preferably, the protrusion is provided at the center of the top of the booster pump;

[0037] Preferably, the upper limit element is made of a soft material capable of absorbing the vibration force generated by the booster pump; or, a shock-absorbing sheet is provided between the upper limit element and the positioning groove to absorb the vibration force generated by the booster pump.

[0038] Preferably, the vibration-reducing and noise-reducing booster pump assembly further includes a limit assembly, and the limit assembly includes:

[0039] a lower limiting element, configured to at least partially wrap the second cover to limit the position of the second cover;

[0040] Preferably, the material of the lower limiting element is selected to be a soft material that can absorb the vibration force generated by the booster pump.

[0041] Preferably, each of the shock-absorbing pads further comprises: a support portion located above the first end portion;

[0042] The support portion includes a second end portion, a lower side wall, and a main body portion located between the second end portion and the lower side wall, wherein the lower side wall is located above the upper wall and contacts the upper wall, and an outer diameter of the lower side wall is larger than a diameter of a corresponding mounting hole, and the upper wall provides a supporting force to the support portion through the lower side wall to reduce a vibration force of the booster pump;

[0043] One end of the fastener is located above the support portion and the upper wall and contacts the second end portion, and the other end of the fastener is fastened at a corresponding fixing position;

[0044] Preferably, the at least one shock-absorbing groove is provided on the main body;

[0045] Preferably, the shock-absorbing pad further comprises a transition section, the transition section being located below the lower side wall and above the first end portion, and the outer diameter of the transition section gradually decreasing in a direction from the lower side wall toward the first end portion along the axial direction of the shock-absorbing pad;

[0046] Preferably, the height of the support portion in the axial direction is greater than the height of the transition section in the axial direction;

[0047] Preferably, the outer diameter of the lower side wall is greater than the outer diameter of the first end portion;

[0048] Preferably, the water outlet is located at the highest water level of the water storage chamber;

[0049] Preferably, the outer diameter of the first end portion is smaller than or equal to the size of the mounting hole, so that the first end portion can pass through the mounting hole to contact or approach the fixing position;

[0050] Preferably, the water storage cavity has a plurality of cavities distributed in a space around the bottom of the second cover body.

[0051] A second embodiment of the present disclosure provides a water purifier, which includes the shock-absorbing and noise-reducing booster pump assembly described in the first embodiment.

[0052] Compared to the commonly held view in the prior art that the booster pump needs to be arranged in a horizontal direction and vibration reduction and noise reduction are performed on this basis, the inventors of this application have overcome the technical prejudices of those skilled in the art and have innovatively proposed that the booster pump can be arranged in a vertical direction perpendicular to the horizontal direction within the accommodation space of the fixed frame to achieve the concept of vibration reduction and noise reduction for the booster pump. One of the important reasons why arranging the booster pump in a vertical direction can reduce vibration and noise is that when the booster pump is arranged in a vertical direction, the water outlet is on the same horizontal line as the horizontal plane when the water storage chamber is filled with water, so that the water storage chamber is always filled with water. As a result, it is impossible for air to exist in the water storage chamber, that is, there is only water in the water storage chamber. Therefore, compared with the technical solution in the prior art where not only water but also air exists in the water storage chamber, the vibration and noise generated by the booster pump during operation will be greatly reduced.

[0053] According to the present invention, by improving the external structure of the booster pump, the structure of the mounting bracket, and the connection between the booster pump and the mounting bracket, the booster pump can be suspended within the housing, thereby significantly reducing the vibration and noise generated by the booster pump during operation. Furthermore, the booster pump is mounted on the mounting bracket using a limiter assembly, and the contact portion of the limiter assembly with the mounting bracket is made of a soft material, or a shock-absorbing plate is provided between the limiter assembly and the mounting bracket, further reducing the vibration and noise generated by the booster pump during operation.

[0054] According to the solution of the present invention, the vibration and noise generated by the booster pump during operation are further reduced by providing at least one shock-absorbing pad. Furthermore, by cleverly and reasonably designing the structure of the shock-absorbing pad, and the positional relationship between the shock-absorbing pad, the fixing frame, and the booster pump, shock absorption and noise reduction in all directions of the booster pump are achieved. Specifically, the inner and outer circumferential surfaces of the shock-absorbing pad are provided with shock-absorbing grooves, which can maximize the absorption of the vibration force generated by the booster pump along the axial direction of the shock-absorbing pad, or the vibration force generated by the booster pump with a component force along the axial direction of the shock-absorbing pad. In addition, the minimum diameter of the hollow inner cavity of the shock-absorbing pad is greater than the diameter of the fastener. In other words, the hollow inner cavity is not filled with the fastener and still has a certain amount of space, which can maximize the absorption of the vibration force generated by the booster pump along the radial direction of the shock-absorbing pad, or the vibration force generated by the booster pump with a component force along the radial direction of the shock-absorbing pad.

[0055] The above structure and design are obtained by the inventor through a large number of experimental verifications, and the experiments have shown that compared with the prior art, the use of the booster pump assembly in the present invention can reduce the noise value of the booster pump by at least 10%.

[0056] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0058] Figure 1 It is a schematic structural diagram of a booster pump in the prior art;

[0059] Figure 2 yes Figure 1 Schematic internal structure diagram at A in the middle;

[0060] Figure 3 is a schematic perspective view of a booster pump assembly according to one embodiment of the present invention;

[0061] Figure 4 is a schematic cross-sectional view of a booster pump assembly according to one embodiment of the present invention;

[0062] Figure 5 is a schematic perspective view of a shock-absorbing pad according to one embodiment of the present invention;

[0063] Figure 6 is a schematic cross-sectional view of a shock-absorbing pad according to one embodiment of the present invention;

[0064] Description of Reference Numerals

[0065] 110 - fixing frame; 111 - upper wall; 112 - side wall; 113 - accommodation space; 114 - bottom of fixing frame; 115 - positioning groove; 116 - mounting hole;

[0066] 120 / 120'-boost pump; 121 / 121'-first cover; 122-second cover; 123-fixing position; 124-raised portion; 125-cavity; 126-water inlet; 127-water outlet;

[0067] 131-upper limit element; 132-lower limit element;

[0068] 140 - shock-absorbing pad; 141 - hollow inner cavity; 142 - shock-absorbing groove; 143 - first end; 144 - second end; 145 - limiting groove; 1451 - upper skirt; 1452 - lower skirt;

[0069] 150-Fasteners. DETAILED DESCRIPTION

[0070] like Figure 1 As shown, in the prior art, the booster pump 120' is placed horizontally on a fixed frame ( Figure 1(not shown) on this basis, the booster pump assembly is designed. Figure 2 As shown, when the booster pump 120' is placed horizontally, under the action of gravity, the lower cavity 125 of the three cavities 125 is generally filled with water, but the uppermost cavity 125 is generally not filled with water, that is, there is both water and air, which greatly increases the noise generated by the booster pump 120' during operation.

[0071] The inventors of the present invention have discovered the above technical problems and proposed a new improvement plan for the above technical problems. Figure 3 A schematic perspective view of a booster pump assembly according to one embodiment of the present invention is shown. Figure 4 FIG. 1 shows a schematic cross-sectional view of a booster pump assembly according to one embodiment of the present invention. Figure 3 and Figure 4 As shown, the inventors have improved the placement of both the fixing frame 110 and the booster pump 120. The booster pump assembly includes a fixing frame 110 and a booster pump 120. The fixing frame 110 has an upper wall 111 and side walls 112 extending downward from the periphery of the upper wall 111. The upper wall 111 and the side walls 112 together define an accommodating space 113. The internal structure of the booster pump 120 can be consistent with that of the prior art. The booster pump 120 includes a first cover 121 and a second cover 122, which are respectively disposed at opposite ends of the booster pump 120. The structure of the second cover 122 can be consistent with that of the prior art. The booster pump 120 is positioned vertically within the accommodating space 113 with the second cover 122 facing downward. In this case, since the water outlet is located at the highest water level of the water storage chamber, water can only be discharged from this outlet when the water storage chamber is full. This ensures that the water storage chamber, i.e., the water in the three cavities 125, is always filled. Those skilled in the art will understand that the vertical direction refers to a direction perpendicular to the horizontal direction. Therefore, compared to the prior art method of placing the booster pump 120 horizontally, the present invention significantly reduces the noise generated by the booster pump 120 during operation, thereby achieving vibration and noise reduction for the booster pump 120.

[0072] One of the key reasons why placing the booster pump 120 in a vertical orientation reduces vibration and noise is that, when the booster pump 120 is placed vertically, the water outlet is aligned with the level of the water chamber when it is full, ensuring that the water chamber is always filled with water. This prevents the presence of air in the water chamber, meaning that only water remains within the chamber. Consequently, compared to prior art solutions in which both water and air are present in the water chamber, the vibration and noise generated by the booster pump 120 during operation are significantly reduced.

[0073] like Figure 3 and Figure 4 As shown, the present invention improves the external structure of the booster pump 120. The first cover 121 has at least one fixing point 123, and the upper wall 111 has at least one mounting hole 116 corresponding to the at least one fixing point 123. Fasteners 150 pass through the mounting holes 116 and are fastened to the corresponding fixing points 123, thereby accommodating the booster pump 120 in the accommodating space 113 and fixing it to the upper wall 111. The accommodating space 113 extends downward through the fixing frame 110. In this case, it can be understood that this is equivalent to suspending the booster pump 120 within the accommodating space 113. The term "suspended" here means that the booster pump 120 is only fixed to the upper wall by its first cover 121, while the second cover 122 is not fixed. In other words, the second cover 122 is suspended within the accommodating space 113, thereby greatly reducing the vibration and noise generated by the booster pump 120 during operation.

[0074] The first cover 121 is provided with a plurality of fixing positions 123, which can be arranged in a circular or rectangular array. Each fixing position 123 can be a protrusion extending from the upper surface of the first cover 121 toward the upper wall 111 of the fixing frame 110. The protrusion can also be threaded to accommodate a fastener 150. The fastener 150 can pass through the mounting hole 116 of the fixing frame 110 and screw onto the protrusion to secure the booster pump 120 to the fixing frame 110. However, when the first cover 121 is secured to the fixing frame 110 via the fastener 150, when vibrations generated by the booster pump 120 are transmitted to the first cover 121, the direct contact between the first cover 121, the fastener 150, and the fixing frame 110 ultimately transmits the vibrations of the first cover 121 to the fixing frame 110. Therefore, through repeated experiments, the inventors sought a technical solution that could further reduce the vibration of the boost pump 120 .

[0075] In one embodiment, the boost pump assembly may further include at least one shock absorbing pad 140 . Figure 5 A schematic perspective view of a shock absorbing pad according to one embodiment of the present invention is shown. Figure 6 FIG. 1 shows a schematic cross-sectional view of a shock absorbing pad according to an embodiment of the present invention. Figure 5 and Figure 6As shown, each shock-absorbing pad 140 is configured to absorb the vibration force generated by the boost pump 120. The material of the shock-absorbing pad 140 is selected to be a soft material that can absorb the vibration force generated by the boost pump 120. The shock-absorbing pad 140 may include a plurality of shock-absorbing grooves 142. The plurality of shock-absorbing grooves 142 are provided on the outer surface and / or inner surface of the shock-absorbing pad 140 to absorb more of the vibration force generated by the boost pump 120 along the axial direction of the shock-absorbing pad 140. In one embodiment, the plurality of shock-absorbing grooves 142 are provided on the outer surface and the inner surface of the shock-absorbing pad 140, and any shock-absorbing groove 142 provided on the outer surface of the shock-absorbing pad 140 and any shock-absorbing groove 142 provided on the inner surface of the shock-absorbing pad 140 are staggered in the axial direction of the shock-absorbing pad 140.

[0076] The shock absorbing pad 140 may further include a hollow inner cavity 141. On the one hand, the hollow inner cavity 141 allows the fastener 150 to pass therethrough. On the other hand, the minimum diameter of the hollow inner cavity 141 is larger than the diameter of the fastener 150 to allow for radial displacement of the shock absorbing pad.

[0077] In one embodiment, the shock-absorbing pad 140 has two ends: a first end 143 and a second end 144 extending in an opposite direction from the first end 143. The hollow inner cavity 141 extends from the first end 143 to the second end 144, allowing a fastener 150 to pass through the hollow inner cavity 141 to secure the shock-absorbing pad 140. The first end 143 can pass through the mounting hole 116 in the fixing frame 110 to contact or approach the fixing position 123. The outer diameter of the first end 143 is smaller than the outer diameter of the second end 144, and the outer diameter of the first end 143 is less than or equal to the size of the mounting hole 116, allowing the first end 143 to pass through the mounting hole 116.

[0078] The shock absorbing pad 140 may further include a limiting groove 145. The limiting groove 145 may be arranged around the outer surface of the shock absorbing pad 140 along the circumference of the shock absorbing pad 140. Figure 6 As shown, the upper skirt 1451 and lower skirt 1452 of the shock-absorbing pad 140 jointly define the limiting groove 145. The outer diameter of the upper skirt 1451 is larger than that of the lower skirt 1452, and the outer diameter of the lower skirt 1452 is slightly larger than the diameter of the mounting hole 116 of the fixing frame 110. The limiting groove 145 is secured to the upper wall 111. When installing the shock-absorbing pad 140, the first end 143 is passed through the mounting hole 116 and moved toward the fixing position 123. The lower skirt 1452 deforms through the mounting hole 116 until it contacts the upper skirt 1451 and stops moving, allowing the limiting groove 145 to be secured to the fixing frame 110. The lower skirt 1452 can return to its original shape after deformation, securing the shock-absorbing pad 140 to the fixing frame 110.

[0079] In the embodiment of the present invention, by cleverly and rationally designing the structure of the shock-absorbing pad 140, and the positional relationship between the shock-absorbing pad 140, the fixing frame 110, and the booster pump 120, further vibration reduction and noise reduction in all directions of the booster pump 120 are achieved. Specifically, the inner and outer circumferential surfaces of the shock-absorbing pad 140 are both provided with shock-absorbing grooves 142, which can maximize the absorption of the vibration force generated by the booster pump 120 along the axial direction of the shock-absorbing pad 140. In addition, the minimum diameter of the hollow inner cavity 141 of the shock-absorbing pad 140 is greater than the diameter of the fastener 150. In other words, the hollow inner cavity 141 is not filled with the fastener 150 and still has a certain amount of space, which can maximize the absorption of the vibration force generated by the booster pump 120 along the radial direction of the shock-absorbing pad 140.

[0080] like Figure 3 and Figure 4 As shown, the boost pump assembly may further include a limiting assembly for limiting the boost pump 120 within the accommodating space 113. The limiting assembly includes a lower limiting element 131 and an upper limiting element 132. The lower limiting element 131 is configured to at least partially wrap the second cover 122 and limit the second cover 122 to the bottom 114 of the fixing frame. The bottom 114 of the fixing frame may be open. The edge of the lower limiting element 131 may be configured to cooperate with the edge of the bottom 114 of the fixing frame, that is, the edge of the bottom 114 of the fixing frame is formed by bending from one end of the side wall 112 so that the edge of the lower limiting element 131 is fixed to the bottom 114 of the fixing frame. The lower limiting element 131 has a wrapping space that cooperates with the second end of the boost pump 120, and the wrapping space is used to wrap the second end of the boost pump 120. It is understood that the lower limiting element 131 can partially wrap around the second end portion, the wrapping being sufficient to absorb the vibration transmitted to the second end portion by the booster pump 120 during operation. The lower limiting element 131 is made of a soft material capable of absorbing the vibration force generated by the booster pump 120, such as rubber. The upper limiting element 132 is disposed between the first cover 121 and the upper wall 111 to limit the first cover 121 to the upper wall 111 of the fixing frame 110.

[0081] The first cover 121 of the booster pump 120 has a raised portion 124, which can be positioned at the center of the top of the booster pump 120. The upper wall 111 of the fixing frame 110 has a positioning groove 115, which corresponds to the raised portion 124. There is a certain space between the positioning groove 115 and the raised portion 124, so that the upper limit element 132 can be positioned between the raised portion 124 and the positioning groove 115. The upper limit element 132 is positioned around the raised portion 124 on one side and embedded in the positioning groove 115 on the other side, thereby fixing the first cover 121 of the booster pump 120 to the upper wall 111 via the upper limit element 132. In one embodiment, the material of the upper limit element 132 is selected to be a soft material that can absorb the vibration force generated by the booster pump 120. In another embodiment, a gap is provided between the portion of the upper limit element 132 that is embedded in the positioning groove 115 and the positioning groove 115, and a shock-absorbing sheet is provided in the gap to absorb the vibration force generated by the booster pump 120. In the embodiment of the present application, the booster pump 120 is not in direct contact with the fixing frame, and the booster pump 120 is suspended in the accommodating space 113 to achieve the effect of vibration and noise reduction.

[0082] Experimental verification shows that, compared with the prior art, the use of the booster pump assembly of the present invention can reduce the noise level of the booster pump 120 by at least 10%.

[0083] To verify the vibration and noise reduction effects of the booster pump assembly, ten water purifier samples were randomly selected and installed with the booster pump assembly. The noise level was tested using the GB / T22090-2008 standard. The water purifiers were turned on and fully operational for 10 minutes. The test data is shown in Table 1 below:

[0084] Table 1

[0085]

[0086] In order to compare with the prior art that does not use the booster pump assembly of the present invention, ten prior art water purifier samples were randomly selected in the experiment and subjected to noise testing. The test standards are the same as those in Table 1 above, and the test data are shown in Table 2:

[0087] Table 2

[0088]

[0089] As shown in Tables 1 and 2 above, the average noise level of the water purifier using the booster pump assembly according to the present invention is less than 45dB(A) and is free of any unusual noise. However, the average noise level of a water purifier in the prior art is greater than 50dB(A) and is accompanied by unusual noise. Therefore, this comparison shows that the noise level of the water purifier using the booster pump assembly according to the present invention is reduced by at least 10% compared to the prior art, representing a significant improvement.

[0090] At this point, those skilled in the art will recognize that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications consistent with the principles of the present invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

1. A booster pump assembly for shock absorption and noise reduction used in a water purifier, characterized in that: The booster pump assembly comprises: a fixed frame having an upper wall; A booster pump comprising a first cover and a second cover, wherein the first cover and the second cover are respectively disposed at two opposite ends of the booster pump, and the second cover has a water storage cavity and a water outlet, wherein the water outlet is in communication with the water storage cavity; The booster pump is arranged on the upper wall in a vertical direction with the second cover body facing downward, and the upper wall provides an upward supporting force for the booster pump to achieve vibration reduction and noise reduction of the booster pump; The first cover has at least one fixing position, and the upper wall has at least one mounting hole corresponding to the at least one fixing position; The boost pump assembly further includes at least one fastener corresponding to the at least one mounting hole, each fastener passing through the corresponding mounting hole and fastened at a corresponding fixing position to fix the boost pump to the upper wall; at least one shock-absorbing pad, corresponding to the at least one mounting hole on the upper wall, the fastener passing through the shock-absorbing pad, the fastener and the shock-absorbing pad passing through the corresponding mounting hole on the upper wall together, and being fastened at the corresponding fixing position; Each of the shock-absorbing pads includes: a first end portion and a support portion located above the first end portion; the first end portion is configured to pass through the mounting hole to contact or approach the fixing position corresponding to the mounting hole; The support portion includes a second end portion, a lower side wall, and a main body portion located between the second end portion and the lower side wall, wherein the lower side wall is located above the upper wall and contacts the upper wall, and an outer diameter of the lower side wall is larger than a diameter of a corresponding mounting hole, and the upper wall provides a supporting force to the support portion through the lower side wall to reduce a vibration force of the booster pump; One end of the fastener is located above the support portion and the upper wall and contacts the second end portion, and the other end of the fastener is fastened at a corresponding fixing position; Each of the shock-absorbing pads further comprises at least one shock-absorbing groove, the at least one shock-absorbing groove being disposed on the main body; the at least one shock-absorbing groove being disposed on the outer surface and / or inner surface of the shock-absorbing pad to absorb the vibration force generated by the booster pump along the axial direction of the shock-absorbing pad; wherein each shock-absorbing groove is disposed around the outer surface or inner surface of the shock-absorbing pad along the circumference of the shock-absorbing pad; the second end portion extending in a direction opposite to the first end portion; The device further comprises: a limiting assembly, the limiting assembly comprising: a lower limiting element, configured to at least partially wrap the second cover to limit the second cover; wherein the material of the lower limiting element is selected to be a soft material capable of absorbing the vibration force generated by the booster pump; The shock absorbing pad further includes a transition section, the transition section being located below the lower side wall and above the first end portion; The thickness between the second end portion and the lower side wall is greater than the thickness between the first end portion and the lower side wall; the outer diameter of the second end portion is greater than the size of the mounting hole; the outer diameter of the first end portion is less than or equal to the size of the mounting hole, so that the first end portion can pass through the mounting hole and contact or approach the fixing position; In the axial direction of the booster pump, each shock-absorbing pad contacts or is close to the upper wall, so as to achieve soft contact between the fastener and the upper wall, thereby achieving shock absorption and noise reduction of the booster pump.

2. The booster pump assembly according to claim 1, characterized in that: The fastener is spaced apart from the mounting hole; the shock-absorbing pad is located between the fastener and the mounting hole; the outer diameter of the lower side wall is larger than the outer diameter of the first end portion; the axial height of the support portion is larger than the axial height of the first end portion.

3. The booster pump assembly according to claim 1, characterized in that The shock-absorbing pad also includes: a hollow inner cavity for allowing the fastener to pass therethrough to fix the shock-absorbing pad at the fixing position; The minimum diameter of the hollow inner cavity is greater than the diameter of the fastener, so as to absorb the vibration force generated by the booster pump along the radial direction of the shock-absorbing pad.

4. The booster pump assembly according to claim 1, characterized in that: The shock-absorbing pad includes a plurality of shock-absorbing grooves provided on an outer surface and / or an inner surface of the shock-absorbing pad to absorb the vibration force generated by the booster pump along an axial direction of the shock-absorbing pad.

5. The booster pump assembly according to claim 4, characterized in that: The outer surface and the inner surface of the shock-absorbing pad are both provided with the shock-absorbing groove; Wherein, any shock-absorbing groove provided on the outer surface of the shock-absorbing pad and any shock-absorbing groove provided on the inner surface of the shock-absorbing pad are staggered in the axial direction of the shock-absorbing pad.

6. The booster pump assembly according to any one of claims 2 to 5, characterized in that: Each of the shock-absorbing pads further includes a limiting groove arranged around the outer surface of the shock-absorbing pad along the circumference of the shock-absorbing pad, for clamping the shock-absorbing pad at the upper wall so that the first end and the second end are respectively located on both sides of the upper wall.

7. The booster pump assembly according to claim 6, characterized in that: The shock-absorbing pad further includes an upper skirt and a lower skirt; the upper skirt and the lower skirt jointly define the limiting groove.

8. The booster pump assembly according to claim 7, characterized in that: The outer diameter of the upper skirt is greater than the outer diameter of the lower skirt, and the outer diameter of the lower skirt is slightly greater than the diameter of the mounting hole.

9. The booster pump assembly according to claim 1, characterized in that: The limiting component includes: An upper limit assembly is provided between the first cover body and the upper wall, and is used for limiting the first cover body to the upper wall of the fixing frame.

10. The boost pump assembly according to claim 9, characterized in that: The upper wall has a positioning groove, and the first cover has a protrusion, and the protrusion corresponds to the positioning groove; One end of the upper limit element is sleeved on the protrusion, and the other end is embedded in the positioning groove.

11. The boost pump assembly according to claim 10, characterized in that: The protrusion is arranged at a central position of the top of the booster pump.

12. The boost pump assembly according to claim 9, characterized in that: The material of the upper limit element is selected to be a soft material that can absorb the vibration force generated by the booster pump.

13. The boost pump assembly according to claim 10, characterized in that A shock-absorbing sheet is provided between the upper limit element and the positioning groove to absorb the vibration force generated by the booster pump.

14. The boost pump assembly according to claim 1, wherein: The fixing frame further comprises a side wall extending downward from the periphery of the upper wall, wherein the upper wall and the side wall jointly define an accommodating space; The booster pump is arranged in the accommodating space in a vertical direction with the second cover body facing downward, so that water always fills the water storage cavity, thereby achieving vibration and noise reduction of the booster pump.

15. The boost pump assembly according to claim 1, wherein: The outer diameter of the transition section gradually decreases in a direction from the lower side wall to the first end portion along the axial direction of the shock-absorbing pad.

16. The boost pump assembly according to claim 14, wherein: The water outlet is located at the highest water level of the water storage chamber.

17. The boost pump assembly according to claim 16, wherein: The water storage cavity has a plurality of cavities distributed in a space around the bottom of the second cover body.

18. A water purifier, characterized in that: A booster pump assembly comprising the vibration-reducing and noise-reducing properties of any one of claims 1 to 17.

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