High-pressure cleaning machine

Abstract

The utility model provides a high pressure washer, including motor subassembly, plunger, pump body, moving part, be equipped with transmission subassembly between plunger and motor subassembly, through the motor subassembly drive transmission subassembly to drive plunger to do reciprocating motion, transmission subassembly includes box casing, box casing has plunger chamber, at least partial plunger is located in the plunger chamber, and the plunger is located in the plunger chamber. A through hole is formed in the box shell; the pump body is provided with a pressure cavity, and at least part of the plunger is located in the pressure cavity. When the plunger moves in a reciprocating mode, water vapor in the plunger cavity is driven by the movable piece to be discharged outwards from the through hole. According to the high-pressure cleaning machine, the through hole communicated with the plunger cavity is formed in the box shell, the plunger is sleeved with the movable part, and in the process that the movable part reciprocates along with the plunger, the movable part can aggravate flowing of water vapor entering the plunger cavity, so that the water vapor entering the plunger cavity flows out of the box shell from the through hole.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, and in particular to a high-pressure cleaner. Background Technology

[0002] High-pressure washers are widely used for cleaning vehicles, yards, and floors. Their working principle generally involves a motor assembly driving a transmission assembly to reciprocate a plunger, creating high-pressure water within the pump body and spraying it outwards through nozzles to rinse items. During the plunger's reciprocating motion, some of the water within the pump body is compressed into vapor, which flows from the connection between the pump body and the transmission assembly into the plunger chamber of the transmission assembly. Utility Model Content

[0003] The purpose of this utility model is to provide a high-pressure cleaner that solves the problem that water vapor in the pump body can flow into the plunger chamber in existing high-pressure cleaners.

[0004] To solve the above-mentioned technical problems, the present invention provides a high-pressure cleaner, comprising:

[0005] Motor assembly;

[0006] A plunger is provided with a transmission assembly between the plunger and the motor assembly, so as to drive the transmission assembly to drive the plunger to reciprocate. The transmission assembly includes a housing, the housing has a plunger chamber, at least a portion of the plunger is located in the plunger chamber, and the housing has a through hole.

[0007] The pump body has a pressure chamber, at least part of the plunger is located in the pressure chamber, external water source enters from the water inlet of the pump body, is pressurized by the plunger and discharged from the water outlet of the pump body, and the plunger reciprocates in the pressure chamber and the plunger chamber;

[0008] A movable component is fitted onto the plunger. When the plunger reciprocates, the movable component drives the water vapor in the plunger chamber to be discharged outward through the through hole.

[0009] Preferably, the movable component is an annular rubber component installed on the outer periphery of the plunger.

[0010] Preferably, the high-pressure cleaner has a water seal that seals the pressure chamber, the water seal being located at the connection between the pressure chamber and the plunger chamber.

[0011] Preferably, the annular member is located within the plunger chamber, and when the plunger is in its initial position, at least a portion of the movable member is radially opposite the through hole to the plunger.

[0012] Preferably, the range of motion of the movable member driven by the plunger does not exceed the two ends of the through hole in the axial direction of the plunger, and multiple through holes are provided at intervals along the circumference of the plunger.

[0013] Preferably, the water seal is fitted onto the plunger, and the water seal is located between the movable part and the pressure chamber.

[0014] Preferably, the plunger chamber has a support frame sleeved on the plunger, the support frame abutting against the water seal, and the movable member is located between the support frame and the plunger.

[0015] Preferably, the support frame is provided with a through flow hole, which is connected to the plunger chamber and the through hole respectively.

[0016] Preferably, an annular limiting surface is provided on the inner surface of the plunger chamber, the annular limiting surface abuts against the side of the support frame away from the water seal, an annular mounting groove is provided on the annular limiting surface, an annular sealing element is provided in the annular mounting groove, the annular sealing element abuts against the side of the support frame away from the water seal, and the annular sealing element is located on the side of the movable part away from the water seal.

[0017] Preferably, the pump body includes a pump casing having the pressure chamber, one end of the pump casing near the pressure chamber being inserted into the plunger chamber and abutting against the side of the support frame near the water seal.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The high-pressure washer of this utility model has a through hole on the housing that communicates with the plunger chamber. A movable part is fitted on the plunger. As the movable part moves back and forth with the plunger, it can increase the flow of water vapor entering the plunger chamber, so that the water vapor entering the plunger chamber can flow out of the housing through the through hole. Attached Figure Description

[0020] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0021] Figure 1 This is a cross-sectional view of the high-pressure cleaner in an embodiment of this utility model;

[0022] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0023] Explanation of reference numerals in the accompanying drawings of this utility model:

[0024] High-pressure washer 1000, motor assembly 100, plunger 200, transmission assembly 300, housing 310, plunger chamber 311, through hole 312, annular limiting surface 313, annular mounting groove 314, support frame 320, annular seal 330, pump body 400, pump casing 410, pressure chamber 411, water inlet end 420, water inlet check valve 421, water outlet end 430, water outlet check valve 431, water seal 440, moving parts 500.

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0028] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] This utility model provides a high-pressure washer, which can be a handheld high-pressure washer, etc. The following description will use a handheld high-pressure washer as an example. Figure 1 and Figure 2 A preferred embodiment of the high-pressure cleaner provided by this utility model is shown.

[0030] Please see Figure 1 and Figure 2 In this embodiment, the high-pressure washer 1000 includes a motor assembly 100, a plunger 200, a transmission assembly 300, a pump body 400, and a movable component 500. A transmission assembly 300 is disposed between the plunger 200 and the motor assembly 100, so that the motor assembly 100 drives the transmission assembly 300 to reciprocate the plunger 200. The transmission assembly 300 includes a housing 310, which has a plunger chamber 311 for receiving one end of the plunger 200 near the transmission assembly 300. The housing 310 has a portion that connects to the plunger... The pump body 400 has a through hole 312 connected to the plunger chamber 311; the pump body 400 has a pressure chamber 411 that houses the end of the plunger 200 away from the transmission assembly 300, so that external water source enters from the inlet end 420 of the pump body 400, is pressurized by the plunger 200 and discharged from the outlet end 430 of the pump body 400, and the pressure chamber 411 is connected to the plunger chamber 311; the movable member 500 is sleeved on the plunger 200 so that when the plunger 200 reciprocates, the movable member 500 drives the water vapor in the plunger chamber 311 to flow out from the through hole 312.

[0031] Specifically, the motor shaft of the motor assembly 100 is connected to the input end of the transmission assembly 300. Thus, when the motor assembly 100 starts, its motor shaft rotates, driving the transmission assembly 300. The motor assembly 100 includes a motor housing, and the transmission assembly 300 includes a housing 310. The housing 310 and the motor housing can be fixed together by screws or snap-fit ​​connections; alternatively, the housing 310 and the motor housing can be integrally formed. The main body of the transmission assembly 300 is housed within the housing 310, and a plunger chamber 311 for housing the plunger 200 is formed within the housing 310. One axial end of the plunger 200 is connected to the output end of the transmission assembly 300. Thus, when the motor assembly 100 drives the transmission assembly 300, the transmission assembly 300 can drive the plunger 200 to reciprocate along its axial direction. The axial direction of the plunger 200 is defined as the front-to-back direction, and the end of the plunger 200 that connects to the transmission assembly 300 is the rear end of the plunger 200.

[0032] The pump body 400 has an inlet end 420 and an outlet end 430. The pump body 400 includes a pump casing 410, within which a pressure chamber 411 is formed. The pressure chamber 411 connects the inlet end 420 and the outlet end 430, allowing external water to enter the pressure chamber 411 from the inlet end 420 and exit from the outlet end 430. Typically, the inlet end 420 and the outlet end 430 are equipped with an inlet check valve 421 and an outlet check valve 431, respectively. The pump casing 410 is fixedly connected to the housing 310, which can be fixed together by screws or clips; alternatively, the pump casing 410 and the housing 310 can be integrally formed. Pressure chamber 411 and plunger chamber 311 are respectively located at the connection between pump casing 410 and housing 310. The rear end of plunger 200 is located in plunger chamber 311, while the front end of plunger 200 extends into pressure chamber 411. Thus, external water enters pressure chamber 411 from inlet end 420, and after being pressurized by the reciprocating plunger 200, the water in pressure chamber 411 can be discharged from outlet end 430 to outside pump body 400.

[0033] Water entering the pressure chamber 411 is pressurized by the reciprocating plunger 200. A portion of the water is compressed into water vapor, which flows into the plunger chamber 311 from the connection between the pump housing 410 and the housing 310. The housing 310 has a through-hole 312 that penetrates both the outer surface of the housing 310 and the inner surface of the plunger chamber 311, allowing the through-hole 312 to connect the plunger chamber 311 to the outside of the housing 310. A movable member 500 is fixedly fitted onto the plunger 200, enabling the plunger 200 to drive the movable member 500 in a reciprocating motion along the front-to-back direction. During this reciprocating motion, the movable member 500 intensifies the flow of water vapor entering the plunger chamber 311, allowing the water vapor to flow out of the housing 310 through the through-hole 312.

[0034] The high-pressure washer 1000 of this utility model has a through hole 312 on the housing 310 that communicates with the plunger chamber 311. A movable part 500 is sleeved on the plunger 200. During the reciprocating motion of the movable part 500 along with the plunger 200, the movable part 500 can amplify the flow of water vapor entering the plunger chamber 311, so that the water vapor entering the plunger chamber 311 flows out of the housing 310 through the through hole 312.

[0035] A movable part 500 is fixedly sleeved on the plunger 200. The movable part 500 can be fixedly sleeved on the plunger 200 by means of adhesive fixation, snap-fit ​​fixation or clamping fixation; the movable part 500 can also be integrally formed with the plunger 200.

[0036] The specific configuration of the movable component 500 can be set according to the actual situation. For example, the movable component 500 can be a metal ring, a sealing ring, etc. Optionally, please refer to... Figure 1 and Figure 2 In this embodiment, the movable part 500 is a ring-shaped rubber part.

[0037] Specifically, the movable part 500 is a rubber sealing ring. The inner diameter of the movable part 500 is slightly smaller than the diameter of the plunger 200, so that the movable part 500 can be clamped and fixed on the plunger 200. This setting method of the movable part 500 and the installation method of the movable part 500 on the plunger 200 are relatively simple.

[0038] The movable element 500 is typically coaxial or nearly coaxial with the plunger 200. The number of movable elements 500 can be one or multiple elements arranged along the axial direction of the plunger 200. Optionally, please refer to... Figure 1 and Figure 2 In this embodiment, there is one movable part 500. The following will take the example of a movable part 500 sleeved on the plunger 200.

[0039] During the reciprocating motion of the movable part 500 along with the plunger 200, the movable part 500 can always be located in the plunger chamber 311; the movable part 500 can also always be located in the pressure chamber 411; the movable part 500 can also reciprocate between the plunger chamber 311 and the pressure chamber 411, so that the movable part 500 can enter the pressure chamber 411 from the plunger chamber 311, and the movable part 500 can also enter the plunger chamber 311 from the pressure chamber 411.

[0040] Optionally, please refer to Figure 1 and Figure 2 In this embodiment, the movable component 500 is located inside the plunger chamber 311.

[0041] Specifically, when the motor assembly 100 is not started, the plunger 200 is in its initial position, and the movable part 500 is located inside the plunger chamber 311. When the motor assembly 100 is started, the movable part 500 remains inside the plunger chamber 311 as it reciprocates along with the plunger 200. This reciprocating movement of the movable part 500 within the plunger chamber 311 facilitates increased flow of water vapor entering the plunger chamber 311, allowing the water vapor to better exit through the through-hole 312 to the outside of the housing 310.

[0042] When the plunger 200 is in its initial position, the movable member 500 can be located in front of or behind the through hole 312; the movable member 500 can also be at least partially opposite the through hole 312 in the radial direction of the plunger 200. Optionally, please refer to Figure 1 and Figure 2 In this embodiment, when the plunger 200 is in the initial position, the movable member 500 and the through hole 312 are opposite each other in the radial direction of the plunger 200.

[0043] Specifically, the axial dimension of the through hole 312 of the plunger 200 is greater than or equal to the axial dimension of the movable member 500 of the plunger 200. This allows the movable member 500 to be radially opposite to the through hole 312 when the plunger 200 is in its initial position. This facilitates the flow of water vapor near the through hole 312 through the movable member 500, allowing the water vapor near the through hole 312 to flow out more effectively from the through hole 312.

[0044] Optionally, please refer to Figure 1 and Figure 2 In this embodiment, the range of motion of the movable part 500 driven by the plunger 200 does not exceed the two ends of the through hole 312 in the axial direction of the plunger 200.

[0045] Specifically, the through hole 312 extends along the axial direction of the plunger 200, such that the through hole 312 has a front edge and a rear edge that are opposite to each other. The movable member 500 has a range of motion under the action of the plunger 200, with a front limit position at the foremost side and a rear limit position at the rearmost side, so that the movable member 500 can reciprocate between the front limit position and the rear limit position under the action of the plunger 200. When the movable part 500 is in the front limit position, it is located behind the front edge of the through hole 312; when the movable part 500 is in the rear limit position, it is located in front of the rear edge of the through hole 312. This ensures that the range of motion of the movable part 500 does not exceed the front and rear ends of the through hole 312. In other words, during the reciprocating motion of the movable part 500 along with the plunger 200, the entire movable part 500 can always be opposite the through hole 312 in the radial direction of the plunger 200. This is beneficial for the reciprocating motion of the movable part 500 to intensify the flow of water vapor near the through hole 312, so that the water vapor near the through hole 312 can flow out from the through hole 312 better.

[0046] The specific number of through holes 312 can be set according to the actual situation. There can be one through hole 312. For example, the housing 310 is provided with an annular through hole extending along the circumference of the plunger 200. There can also be multiple through holes 312 spaced apart along the circumference of the plunger 200.

[0047] Optionally, please refer to Figure 1 and Figure 2In this embodiment, four through holes 312 are evenly spaced along the circumference of the plunger 200, which facilitates the flow of water vapor in the plunger chamber 311 out through the multiple through holes 312 arranged along the circumference of the plunger 200.

[0048] Optionally, please refer to Figure 1 and Figure 2 In this embodiment, a water seal 440 is provided in the pressure chamber 411. The water seal 440 is sleeved on the plunger 200, and the movable part 500 is located on the side of the water seal 440 close to the plunger chamber 311.

[0049] Specifically, an annular receiving groove is provided on the inner surface of the pressure chamber 411, with the opening of the annular receiving groove facing backward. An annular water seal 440 is fixedly installed in the annular receiving groove and is sleeved on the front end of the plunger 200. The plunger 200 can move back and forth relative to the water seal 440. The water seal 440 is located on the front side of the movable part 500, or in other words, the water seal 440 is located between the movable part 500 and the pressure chamber 411. Thus, the water seal 440 is installed at the connection between the pressure chamber 411 and the plunger chamber 311 to seal the connection. The water seal 440 can prevent water vapor in the pressure chamber 411 from flowing into the plunger chamber 311.

[0050] Further, please refer to Figure 1 and Figure 2 In this embodiment, a support frame 320 is provided in the plunger chamber 311. The support frame 320 is sleeved on the plunger 200 and abuts against the side of the water seal 440 near the plunger chamber 311. The movable part 500 is located between the support frame 320 and the plunger 200.

[0051] Specifically, a support frame 320 is fixedly installed inside the plunger chamber 311. The front end of the support frame 320 extends forward into the plunger chamber 311 and abuts against the rear side of the water seal 440. In this way, the support frame 320 and the bottom wall of the annular receiving groove can limit the water seal 440 in the axial direction of the plunger 200, thereby helping to ensure the sealing effect of the water seal 440.

[0052] The movable component 500 is located inside the support frame 320, and the support frame 320 is provided with a clearance structure corresponding to the through hole 312 on the inner surface of the plunger chamber 311, thereby preventing the support frame 320 from blocking the through hole 312. This helps to ensure that the water vapor in the plunger chamber 311 can flow smoothly out of the through hole 312. In this embodiment, the clearance structure on the support frame 320 is configured as multiple flow holes penetrating the support frame 320. The water vapor in the plunger chamber 311 can move through the flow holes to the area between the support frame 320 and the housing 310, and then the water vapor can be discharged again through the through hole 312.

[0053] Optionally, please refer to Figure 1 and Figure 2 In this embodiment, an annular limiting surface 313 is provided on the inner surface of the plunger chamber 311. The annular limiting surface 313 abuts against the side of the support frame 320 away from the water seal 440. An annular mounting groove 314 is provided on the annular limiting surface 313. An annular sealing element 330 is provided in the annular mounting groove 314. The annular sealing element 330 abuts against the side of the support frame 320 away from the water seal 440. The annular sealing element 330 is located on the side of the movable part 500 away from the water seal 440.

[0054] Specifically, an annular limiting surface 313 facing forward is provided on the inner surface of the plunger chamber 311. The annular limiting surface 313 is located behind the movable part 500 and the support frame 320. The annular limiting surface 313 abuts against the rear end of the support frame 320. In this way, the support frame 320 can be installed and positioned in the axial direction of the plunger 200 through the annular limiting surface 313.

[0055] An annular mounting groove 314 with the opening facing forward is provided on the annular limiting surface 313. The annular seal 330 is fixedly installed in the annular mounting groove 314 and is sleeved on the rear end of the plunger 200. The plunger 200 can move back and forth relative to the annular seal 330. Thus, the annular seal 330 is provided on the rear side of the plunger chamber 311. The annular seal 330 can prevent water vapor in the plunger chamber 311 from continuing to flow backward and prevent water vapor from flowing into the space located on the rear side of the plunger chamber 311 in the housing 310.

[0056] Further, please refer to Figure 1 and Figure 2 In this embodiment, the annular seal 330 abuts against the rear side of the support frame 320, so that the support frame 320 can abut and limit the annular seal 330, thereby preventing the annular seal 330 from disengaging from the annular mounting groove 314.

[0057] Optionally, please refer to Figure 1 and Figure 2 In this embodiment, the pump body 400 includes a pump housing 410 having a pressure chamber 411. One end of the pump housing 410 near the pressure chamber 411 is inserted into the plunger chamber 311 and abuts against the side of the support frame 320 near the water seal 440.

[0058] Specifically, the pump housing 410, with one end of the pressure chamber 411, is inserted rearward into the plunger chamber 311, and the end of the pump housing 410 inserted into the plunger chamber 311 abuts against the front end of the support frame 320. In this way, the annular limiting surface 313 and the pump housing 410 can limit the support frame 320 in the axial direction of the plunger 200, which helps to ensure the supporting function of the support frame 320.

[0059] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A high-pressure cleaner, characterized in that, include: Motor assembly; A plunger is provided with a transmission assembly between the plunger and the motor assembly, so as to drive the transmission assembly to drive the plunger to reciprocate. The transmission assembly includes a housing, the housing has a plunger chamber, at least a portion of the plunger is located in the plunger chamber, and the housing has a through hole. The pump body has a pressure chamber, at least part of the plunger is located in the pressure chamber, external water source enters from the water inlet of the pump body, is pressurized by the plunger and discharged from the water outlet of the pump body, and the plunger reciprocates in the pressure chamber and the plunger chamber; A movable component is fitted onto the plunger. When the plunger reciprocates, the movable component drives the water vapor in the plunger chamber to be discharged outward through the through hole.

2. The high-pressure cleaner as described in claim 1, characterized in that, The movable component is an annular rubber component installed on the outer periphery of the plunger.

3. The high-pressure cleaner as described in claim 1, characterized in that, The high-pressure cleaner has a water seal that seals the pressure chamber, and the water seal is located at the connection between the pressure chamber and the plunger chamber.

4. The high-pressure cleaner as described in claim 3, characterized in that, The movable member is located within the plunger chamber, and when the plunger is in its initial position, at least a portion of the movable member is radially opposite the through hole to the plunger.

5. The high-pressure cleaner as described in claim 4, characterized in that, The range of motion of the movable component under the action of the plunger does not exceed the two ends of the through hole in the axial direction of the plunger, and multiple through holes are provided at intervals along the circumference of the plunger.

6. The high-pressure cleaner as described in claim 3, characterized in that, The water seal is fitted onto the plunger and is located between the movable part and the pressure chamber.

7. The high-pressure cleaner as described in claim 6, characterized in that, The plunger chamber has a support frame sleeved on the plunger, the support frame abuts against the water seal, and the movable member is located between the support frame and the plunger.

8. The high-pressure cleaner as described in claim 7, characterized in that, The support frame is provided with a through flow hole, which is connected to the plunger chamber and the through hole respectively.

9. The high-pressure cleaner as described in claim 8, characterized in that, An annular limiting surface is provided on the inner surface of the plunger chamber. The annular limiting surface abuts against the side of the support frame away from the water seal. An annular mounting groove is provided on the annular limiting surface. An annular sealing element is provided in the annular mounting groove. The annular sealing element abuts against the side of the support frame away from the water seal. The annular sealing element is located on the side of the movable part away from the water seal.

10. The high-pressure cleaner as described in claim 9, characterized in that, The pump body includes a pump casing having the pressure chamber, one end of the pump casing near the pressure chamber being inserted into the plunger chamber and abutting against the support frame on the side near the water seal.

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