Steam vacuum cleaner

Abstract

The present invention discloses a steam vacuum cleaner, comprising: a dust collection box and a box cover; the box cover is installed on the top of the dust collection box; the box cover includes: a box cover housing, a dust suction fan, a water tank and a steam generator; the dust suction fan, the steam generator and the water tank are installed on the box cover housing; the steam vacuum cleaner defines an axis; in the direction of the axis, the front end and the rear end of the steam vacuum cleaner are defined; the axis is perpendicular to the axis of the dust suction fan; the front end of the dust collection box is provided with a dust suction pipeline connection structure for connecting a dust suction pipeline; the front end of the box cover is provided with a steam pipeline connection structure for connecting a steam pipeline; the water tank is arranged at the rear end of the box cover; a generator accommodation cavity for accommodating the steam generator is formed at the front end of the box cover housing; the steam generator is located in the generator accommodation cavity. The beneficial effect of the present invention lies in that the internal structure is reasonably arranged.

Description

Technical Field

[0001] The present invention relates to a vacuum cleaner, and more particularly to a steam vacuum cleaner. Background Art

[0002] A barrel vacuum cleaner is a dust removal tool, mostly used by cleaning companies, hotels, and office buildings. The barrel vacuum cleaner consists of a powered head and a lower dust collection box for collecting dust. A blower is provided in the head of the barrel vacuum cleaner. The blower provides the suction power.

[0003] The working principle of a steam vacuum cleaner is to use high-temperature steam to soften stubborn stains to kill bacteria, mites, etc., and then suck away the stains and dust, etc.

[0004] In the traditional steam vacuum cleaner, the internal structure layout is unreasonable, and the internal high-temperature steam pipeline is easy to touch the housing, causing the housing to melt at high temperature. Summary of the Invention

[0005] To solve the deficiencies of the prior art, the present invention provides a steam vacuum cleaner with a reasonable structure layout, a short path of the internal high-temperature steam pipeline, reducing the possibility that the high-temperature steam pipeline shakes and touches the lid housing inside the lid housing, causing the lid housing to melt at high temperature.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A steam vacuum cleaner, comprising: a dust collection box and a lid; the lid is installed on the top of the dust collection box; the lid includes: a lid housing, a suction blower, a water tank, and a steam generator; the suction blower, the steam generator, and the water tank are installed in the lid housing;

[0008] The steam vacuum cleaner is defined with an axis; in the direction of the axis, the front end and the rear end of the steam vacuum cleaner are defined; the axis is perpendicular to the axis of the suction blower; the front end of the dust collection box is provided with a suction pipeline connection structure for connecting a suction pipeline; the front end of the lid is provided with a steam pipeline connection structure for connecting a steam pipeline; the water tank is arranged at the rear end of the lid; a generator accommodation cavity for accommodating the steam generator is formed at the front end of the lid housing; the steam generator is located in the generator accommodation cavity; a pipe hole through which a pipeline connecting the suction pipeline connection structure and the steam generator passes is formed on the front wall of the cavity of the generator accommodation cavity; in the direction of the axis, the suction pipeline connection structure, the pipe hole, the steam generator, the suction blower, and the water tank are arranged in sequence; the lid housing is formed with: a suction air inlet and a suction air outlet; the suction air inlet is located below the suction blower; the suction air outlet is located at the rear end of the lid housing and in the axial direction of the suction blower, and the suction air outlet is located between the suction air inlet and the water tank.

[0009] Further, the top of the steam generator is lower than the bottom of the water tank.

[0010] Furthermore, the top wall of the generator accommodation cavity is higher than the bottom of the water tank and lower than the top of the water tank.

[0011] Furthermore, the top of the steam generator is lower than the top of the dust suction fan, and the bottom of the steam generator is higher than the bottom of the dust suction fan.

[0012] Furthermore, the top of the dust suction fan is higher than the bottom of the water tank and lower than the top of the water tank.

[0013] Furthermore, the steam pipeline connection structure is directly above the dust suction pipeline connection structure.

[0014] Furthermore, a plurality of support ribs are formed on the bottom wall of the generator accommodation cavity; a backing plate is provided between the support ribs and the steam generator.

[0015] Furthermore, both sides of the pipe hole are respectively aligned with the dust suction pipeline connection structure and the steam generator.

[0016] Furthermore, a plurality of steam generator heat dissipation holes for dissipating heat from the steam generator are provided on the cavity wall of the generator accommodation cavity.

[0017] Furthermore, the number of the steam generator heat dissipation holes is 2; the two steam generator heat dissipation holes are respectively arranged on both sides of the generator accommodation cavity; the pipe hole is located between the two steam generator heat dissipation holes.

[0018] The beneficial effect of the present invention is that the structural arrangement is reasonable, the path of the internal high-temperature steam pipeline is short, and the possibility that the high-temperature steam pipeline shakes and touches the box cover housing in the box cover housing, causing the box cover housing to melt at high temperature is reduced.

[0019] The height of the main body is reduced. The steam generator is arranged in an independent cavity, avoiding interference with the fan and not affecting the heat dissipation of the fan. Description of the Drawings

[0020] Figure 1 is a schematic diagram of a vacuum cleaner of the present invention;

[0021] Figure 2 is Figure 1 a schematic diagram of the vacuum cleaner after removing the working attachment in

[0022] Figure 3 is Figure 1 a schematic diagram of the internal structure of the handle seat of the vacuum cleaner in

[0023] Figure 4 is Figure 1 a schematic diagram of the working head of the vacuum cleaner in

[0024] Figure 5 is Figure 1 a schematic diagram of the box cover of the vacuum cleaner in

[0025] Figure 6 is Figure 5 A sectional view of the middle box cover;

[0026] Figure 7 is Figure 5 A schematic diagram of the middle box cover after removing the upper housing;

[0027] Figure 8 is Figure 7 A schematic diagram of another perspective of the middle structure;

[0028] Figure 9 is Figure 1 A pipeline diagram of the steam flow of the vacuum cleaner in the middle.

[0029] Vacuum cleaner 100, main body 100a, central axis 101, axis 102 of the dust suction fan;

[0030] Box cover 10, box cover housing 11, lower housing 111, middle housing 112, fan heat dissipation air inlet housing 113, fan heat dissipation air outlet housing 114, upper housing 115, first grid hole 1151, second grid hole 1152, third grid hole 1153, generator accommodation cavity 116, pipe hole 1161, steam generator heat dissipation hole 1162, fan cavity 117, dust suction air inlet 1171, dust suction air outlet 1172, fan heat dissipation cavity 118, fan heat dissipation air inlet channel 1181, fan heat dissipation air outlet channel 1182, fan heat dissipation air inlet 1183, fan heat dissipation air outlet 1184, dust suction fan 12, water tank 13, steam generator 14, steam pipeline connection structure 15, backing plate 16, main control PCB board 17;

[0031] Dust collection box 20, dust suction pipeline connection structure 21, first connection seat 22, connection seat buckle 221, insertion hole 222, second connection seat 23, positioning convex block 231, rear wheel 24, front wheel 25;

[0032] Operation accessory 30, operation head 31, dust suction inlet 311, steam outlet 312, hollow handle rod 32, handle steam pipe 33, handle seat 34, grip 341, trigger 342, locking member 343, clamping member 35, clamping member buckle 351, pipe sleeve 352;

[0033] Water tank outlet pipe 41, water pump outlet pipe 42, steam generator inlet pipe 43, steam pipeline 44, pressure relief valve return pipe 45, water tank return pipe 46, water pump 47, mechanical safety valve 48, electronic pressure relief valve 49, pressure switch 51, valve 52, temperature switch 53, control switch 54. Detailed implementation manners

[0034] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0035] As shown Figures 1 to 9 in Figure [not provided], a vacuum cleaner 100 includes: a main body 100a, a working attachment 30, a dust suction pipeline, and a steam pipeline 44. The dust suction pipeline and the steam pipeline 44 connect the main body 100a and the working attachment 30. Both the dust suction pipeline and the steam pipeline 44 are flexible hoses, facilitating the user to operate the working attachment 30 for dust suction operation. The main body 100a includes: a dust collection box 20 and a box cover 10. The box cover 10 is installed on the top of the dust collection box 20. The box cover 10 includes: a box cover housing 11, a dust suction fan 12, a water tank 13, and a steam generator 14. The dust suction fan 12, the steam generator 14, and the water tank 13 are installed on the box cover housing 11. The vacuum cleaner 100 integrates a steam cleaning function by setting the steam generator 14. Therefore, this type of vacuum cleaner 100 can also be called a steam vacuum cleaner, a steam - type vacuum cleaner, or a vacuum cleaner with a steam cleaning function.

[0036] The vacuum cleaner 100 is defined with a central axis 101. In the direction of the central axis 101, the front end and the rear end of the vacuum cleaner 100 are defined. The central axis 101 is perpendicular to the axis 102 of the dust suction fan 12. The direction of the axis 102 of the dust suction fan 12 is the height direction of the vacuum cleaner 100, and along this direction, the upper end and the lower end of the vacuum cleaner 100 are defined. A handle is provided on the top of the box cover, facilitating the user to lift the vacuum cleaner 100.

[0037] The front end of the dust collection box 20 is provided with a dust suction pipeline connection structure 21 for connecting the dust suction pipeline. The front end of the box cover 10 is provided with a steam pipeline connection structure 15 for connecting the steam pipeline 44. Specifically, the steam pipeline connection structure 15 is located directly above the dust suction pipeline connection structure 21. The water tank 13 is arranged at the rear end of the box cover 10.

[0038] As a preferred embodiment, a generator accommodation cavity 116 for accommodating the steam generator 14 is formed at the front end of the box cover housing 11. The steam generator 14 is located within the generator accommodation cavity 116. A pipe hole 1161 through which a pipeline connecting the dust suction pipeline connection structure 21 and the steam generator 14 passes is formed on the front wall of the cavity of the generator accommodation cavity 116. In the direction of the central axis 101, the dust suction pipeline connection structure 21, the pipe hole 1161, the steam generator 14, the dust suction fan 12, and the water tank 13 are arranged in sequence.

[0039] The box cover housing 11 is formed with: a dust suction air inlet 1171 and a dust suction air outlet 1172. The dust suction air inlet 1171 is located below the dust suction fan 12. The dust suction air outlet 1172 is located at the rear end of the box cover housing 11 and, in the direction of the axis 102 of the dust suction fan 12, the dust suction air outlet 1172 is located between the dust suction air inlet 1171 and the water tank 13.

[0040] The steam generator 14 is disposed within an independent generator accommodation chamber 116, preventing the high temperature of the steam generator 14 from affecting the heat dissipation of the blower and the dust suction operation of the blower. Both the generator accommodation chamber 116 and the steam pipeline connection structure 15 are arranged at the front end. A pipe hole 1161 is provided on the front wall of the chamber of the generator accommodation chamber 116 for the pipeline connecting the dust suction pipeline connection structure 21 and the steam generator 14 to pass through, reducing the size of the high-temperature steam pipeline within the lid housing 11 and decreasing the likelihood of the high-temperature steam pipeline shaking and touching the lid housing 11 within the lid housing 11, causing the lid housing 11 to melt at high temperature. The arrangement of the internal structure of the vacuum cleaner 100 also saves space dimensions. Specifically, the arrangement method of the internal structure of the vacuum cleaner 100 reduces the height of the main body.

[0041] As a preferred implementation manner, a plurality of steam generator heat dissipation holes 1162 for dissipating heat from the steam generator 14 are provided on the chamber wall of the generator accommodation chamber 116. Specifically, the number of steam generator heat dissipation holes 1162 is 2. The two steam generator heat dissipation holes 1162 are respectively arranged on both sides of the generator accommodation chamber 116. The pipe hole 1161 is located between the two steam generator heat dissipation holes 1162.

[0042] The water tank 13 is provided at the rear end of the dust collection box 20, away from the steam generator heat dissipation holes 1162, so that users are not easily affected by the steam generator heat dissipation holes 1162 when adding water to the water tank 13.

[0043] As a specific implementation manner, the top of the steam generator 14 is lower than the bottom of the water tank 13. The top wall of the chamber of the generator accommodation chamber 116 is higher than the bottom of the water tank 13 and lower than the top of the water tank 13. The top of the steam generator 14 is lower than the top of the dust suction blower 12 and the bottom of the steam generator 14 is higher than the bottom of the dust suction blower 12. The top of the dust suction blower 12 is higher than the bottom of the water tank 13 and lower than the top of the water tank 13.

[0044] As a specific implementation manner, a plurality of support ribs are formed on the bottom wall of the chamber of the generator accommodation chamber 116. A cushion plate 16 is provided between the support ribs and the steam generator 14. The two sides of the pipe hole 1161 are respectively aligned with the dust suction pipeline connection structure 21 and the steam generator 14. The pipe hole 1161 facilitates the passage of the pipeline connecting the dust suction pipeline connection structure 21 and the steam generator 14, reducing the size of the high-temperature steam pipeline within the lid housing 11.

[0045] As a specific implementation manner, the working accessory 30 includes: a working head 31, a hollow handle rod 32, a handle steam pipe 33, and a handle base 34. The dust suction pipeline and the steam pipeline 44 communicate with the handle base 34.

[0046] The two ends of the hollow handle rod 32 and the handle steam pipe 33 are respectively connected to the working head 31 and the handle base 34. The handle base 34 is provided with a handle 341 for the user to hold. The working head 31 is formed with a dust suction inlet 311 for communicating with the hollow handle rod 32 to perform dust suction and a steam outlet 312 for communicating with the handle steam pipe 33 to eject steam.

[0047] As a preferred embodiment, the main body 100a is provided with a first connection seat 22 and a second connection seat 23 for fixing and storing the working attachment 30. The bottom of the main body 100a is provided with a rear wheel 24 and a front wheel 25 for supporting the main body 100a. The front wheel 25 is a universal wheel. The rear wheel 24 is located between the front wheel 25 and the second connection seat 23. The first connection seat 22 is disposed above the second connection seat 23. The first connection seat 22 is provided with a connection seat buckle 221 for clamping the hollow handle rod 32. The second connection seat 23 is provided with a positioning projection 231 for inserting into the dust suction inlet 311 to position the working head 31. The first connection seat 22 and the second connection seat 23 are disposed at the rear end of the main body 100a. The opening of the connection seat buckle 221 of the first connection seat 22 faces the rear of the main body 100a. The positioning projection 231 extends towards the front upper part of the main body 100a. Specifically, the first connection seat 22 and the second connection seat 23 are fixed to the dust collection box 20.

[0048] By using the cooperation of the positioning projection 231 and the dust suction inlet 311, restricting the downward and backward movement of the working head 31, and the connection seat buckle 221 clamping the hollow handle rod 32, the working attachment 30 can be reliably set on the main body 100a to realize the storage and fixation of the working attachment 30, avoiding the working attachment 30, the dust suction pipeline and the steam pipeline 44 from being scattered on the ground. The dust suction pipeline and the steam pipeline 44 are connected to the front end of the main body 100a, and the first connection seat 22 and the second connection seat 23 are arranged at the rear end of the main body 100a, increasing the suspended dimension of the dust suction pipeline and the steam pipeline 44 to avoid the dust suction pipeline and the steam pipeline 44 from touching the ground. When the working attachment 30 is connected to the main body 100a through the first connection seat 22 and the second connection seat 23, the user can also push the vacuum cleaner 100 forward by holding the handle 341 of the handle base 34 or the hollow handle rod 32.

[0049] As a specific embodiment, the handle steam pipe 33 is located on the side of the hollow handle rod 32 away from the first connection seat 22.

[0050] As a specific implementation manner, the working attachment 30 further includes a clamping member 35 for fixing the handle steam pipe 33 to the hollow handle rod 32. The clamping member 35 includes a pipe sleeve 352 sleeved on the outer periphery of the handle steam pipe 33 and a clamping member buckle 351 for clamping the hollow handle rod 32. Specifically, the opening of the clamping member buckle 351 faces forward. The pipe sleeve 352 is located behind the clamping member buckle 351.

[0051] As a specific implementation manner, both ends of the hollow handle rod 32 and the handle steam pipe 33 are detachably inserted into the working head 31 and the handle base 34 respectively. The working attachment 30 has a first use state and a second use state. In the first use state, the working head 31 is connected to the handle base 34 through the hollow handle rod 32 and the handle steam pipe 33. In the second use state, the working head 31 is directly inserted into the handle base 34.

[0052] As a specific implementation manner, both ends of the dust suction pipeline and the steam pipeline 44 are also connected to the handle base 34 and the main body 100a of the machine in a detachable manner. One end of the dust suction pipeline communicates with the dust collection box 20. The other end of the dust suction pipeline communicates with the dust suction inlet 311 through the hollow handle rod 32. The hollow handle rod 32 connects the handle base 34 and the working head 31. The handle steam pipe 33 is fixed to the hollow handle rod 32.

[0053] As a preferred implementation manner, the handle base 34 is provided with a valve 52 and a trigger 342. The valve 52 communicates the steam pipeline 44 and the handle steam pipe 33 and controls the on-off of the steam pipeline 44 and the handle steam pipe 33. The trigger 342 enables the user to control the valve 52 when holding the handle 341. The valve 52 is arranged inside the handle base 34. The trigger 342 is rotatably connected to the handle base 34.

[0054] As a preferred implementation manner, the handle base 34 is further provided with a locking member 343. The locking member 343 is used to abut against the trigger 342 to prevent the trigger 342 from rotating. The locking member 343 is slidably connected to the handle base 34. The locking member 343 is provided with a limiting block protruding towards the trigger 342. When the limiting block abuts against the trigger 342, the rotation of the trigger 342 is prevented. After the user pushes the locking member 343 to slide relative to the handle base 34, the limiting block is disengaged from the trigger 342, and the trigger 342 can rotate without touching the limiting block and directly control the valve 52. A return spring is arranged between the trigger 342 and the handle base 34 to reset the trigger 342.

[0055] As a preferred implementation manner, the hollow handle rod 32 includes a plurality of handle rod unit sections. The plurality of handle rod unit sections are sequentially inserted. As a specific implementation manner, the number of the handle rod unit sections is 2.

[0056] As a preferred embodiment, the first connection base 22 is further provided with insertion holes 222 for inserting accessories. The number of the insertion holes 222 is 2. The connection base buckle 221 is located between the two insertion holes 222.

[0057] As a preferred embodiment, the lid housing 11 includes: a lower housing 111, a middle housing 112, a fan heat dissipation air inlet housing 113, and a fan heat dissipation air outlet housing 114.

[0058] The lower housing 111 and the middle housing 112 together form a fan chamber 117 and a generator accommodation chamber 116 for accommodating the steam generator 14. The steam generator 14 is fixed to the lower housing 111. The middle housing 112 forms a fan heat dissipation chamber 118. The lid housing 11 is formed with a dust suction air inlet 1171, a dust suction air outlet 1172, a fan heat dissipation air inlet 1183, a fan heat dissipation air outlet 1184, and steam generator heat dissipation holes 1162 for dissipating heat from the steam generator 14. The fan heat dissipation air inlet housing 113 and the middle housing 112 together form a fan heat dissipation air inlet passage 1181 communicating the fan heat dissipation air inlet 1183 and the fan heat dissipation chamber 118. The fan heat dissipation air outlet housing 114 and the middle housing 112 together form a fan heat dissipation air outlet passage 1182 communicating the fan heat dissipation air outlet 1184 and the fan heat dissipation chamber 118.

[0059] The dust suction fan 12 drives the air flow to enter the fan chamber 117 from the dust collection box 20 through the dust suction air inlet 1171 and then discharge from the dust suction air outlet 1172. A heat dissipation fan for dissipating heat from the dust suction fan 12 is provided at the top of the dust suction fan 12. The rotation of the heat dissipation fan drives the air flow to enter the fan heat dissipation chamber 118 from the outside of the lid 10 through the fan heat dissipation air inlet passage 1181 through the fan heat dissipation air inlet 1183 and then discharge to the outside of the lid 10 from the fan heat dissipation air outlet 1184 through the fan heat dissipation air outlet passage 1182. The steam generator 14 is located in the generator accommodation chamber 116. The steam generator heat dissipation holes 1162 communicate the inside of the generator accommodation chamber 116 and the outside of the lid 10.

[0060] By using the fan heat dissipation air inlet housing 113 and the fan heat dissipation air outlet housing 114 to cooperate with the middle housing 112 respectively to form the fan heat dissipation air inlet passage 1181 and the fan heat dissipation air outlet passage 1182, the fan heat dissipation air inlet 1183 and the fan heat dissipation air outlet 1184 are separated from each other, avoiding the re-entry of hot air into the fan heat dissipation air inlet 1183, thereby improving the heat dissipation effect. The steam generator 14 is arranged in an independent generator accommodation chamber 116, avoiding the high temperature of the steam generator 14 from affecting the fan heat dissipation and the dust suction operation of the fan.

[0061] As a preferred embodiment, the fan chamber 117 surrounds the fan heat dissipation chamber 118.

[0062] As a preferred embodiment, the middle housing 112 is fixed to the lower housing 111. The blower heat dissipation air inlet housing 113 and the blower heat dissipation air outlet housing 114 are fixed to the middle housing 112. The middle housing 112 is located above the lower housing 111. The blower heat dissipation air inlet housing 113 and the blower heat dissipation air outlet housing 114 are located above the middle housing 112. The lower housing 111 and the middle housing 112 clamp and fix the dust suction blower 12 from both sides. By using the method of clamping the dust suction blower 12 from both sides by the lower housing 111 and the middle housing 112, the installation of the dust suction blower 12 is convenient and fast.

[0063] As a specific embodiment, the lid housing 11 further includes: an upper housing 115. The upper housing 115 is fixed to the lower housing 111.

[0064] The upper housing 115 covers the lower housing 111, the middle housing 112, the blower heat dissipation air inlet housing 113 and the blower heat dissipation air outlet housing 114. The water tank 13 is fixed to the upper housing 115. The upper housing 115 is provided with a first grid hole 1151, a second grid hole 1152 and a third grid hole 1153. The first grid hole 1151 communicates with the blower heat dissipation air inlet 1183. The second grid hole 1152 communicates with the dust suction air outlet 1172. The third grid hole 1153 communicates with the blower heat dissipation air outlet 1184. The third grid hole 1153 communicates with the steam generator heat dissipation hole 1162. The first grid hole 1151 and the second grid hole 1152 are respectively located on both sides of the rear end of the upper housing 115. The third grid hole 1153 is located at the front end of the upper housing 115. The first grid hole 1151, the second grid hole 1152 and the third grid hole 1153 can prevent foreign objects from entering the blower heat dissipation air inlet 1183, the blower heat dissipation air outlet 1184, the steam generator heat dissipation hole 1162 and the dust suction air outlet 1172.

[0065] As a preferred embodiment, the vacuum cleaner 100 includes: a main control PCB board 17. The main control PCB board 17 is disposed between the upper housing 115 and the middle housing 112. The air flow discharged from the blower heat dissipation air outlet 1184 passes through the main control PCB board 17 and then passes through the upper housing 115 and is discharged to the outside of the lid 10.

[0066] As a preferred embodiment, the vacuum cleaner 100 is provided with a steam circulation system. Specifically, the steam circulation system includes: a water tank outlet pipe 41, a water pump outlet pipe 42, a steam generator inlet pipe 43, a steam pipeline 44, a handle steam pipe 33 connected to the steam outlet 312, a pressure relief valve return pipe 45, a water tank return pipe 46, a water pump 47, a tee joint 49, a pressure switch 51 for controlling the power-off of the water pump 47, a mechanical safety valve 48 for pressure relief, and a valve 52 for controlling the on / off of the steam pipeline 44 and the handle steam pipe 33. Specifically, the mechanical safety valve 48 is a spring-type pressure relief valve. When the pressure is greater than 2 bar, the pressure switch 51 operates to cut off the circuit, thereby controlling the water pump 47 to power off and stop working.

[0067] The water tank outlet pipe 41 connects the water tank 13 and the water pump 47. The water pump outlet pipe 42 connects the water pump 47 and the pressure switch 51. The pressure switch 51 is connected to the tee joint 49; the steam generator inlet pipe 43 connects the tee joint 49 and the steam generator 14. The steam pipeline 44 connects the steam generator 14 and the valve 52. The handle steam pipe 33 connects the valve 52 and the steam outlet 312. The pressure relief valve return pipe 45 connects the tee joint 49 and the mechanical safety valve 48. The water tank return pipe 46 connects the mechanical safety valve 48 and the water tank 13.

[0068] As a preferred embodiment, the vacuum cleaner 100 further includes a temperature switch 53 for controlling the steam generator 14.

[0069] As a preferred embodiment, the vacuum cleaner 100 with a steam cleaning function further includes a control switch 54 for controlling the water pump 47 to adjust the flow rate.

[0070] As a specific embodiment, the water tank outlet pipe 41, the water pump outlet pipe 42, the steam generator inlet pipe 43, the pressure relief valve return pipe 45, the water tank return pipe 46, the water pump 47, the mechanical safety valve 48, the tee joint 49, and the pressure switch 51 are arranged inside the cover housing 11.

[0071] When the pressure in the pipeline is too high, the water can be returned to the water tank 13 through the pressure relief valve return pipe 45 and the water tank return pipe 46, preventing water waste and avoiding leakage caused by excessive pipeline pressure. The mechanical safety valve 48 controls the pressure and returns the water when the pressure is too high. When the pipeline pressure is greater than 2 bar, the pressure switch 51 operates to control the water pump 47 to power off and stop working. The mechanical safety valve 48 and the pressure switch 51 achieve double protection for pressure control, reducing the possibility of leakage caused by excessive pipeline pressure. A valve 52 is provided at the handle seat 34, and the valve 52 is controlled by the trigger 342, which is convenient for the user to control whether to release steam during vacuuming.

[0072] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A steam vacuum cleaner, comprising: a dust collection box and a box cover; The box cover is mounted to the top of the dust collection box; the box cover includes: a box cover housing, a dust suction fan, a water tank, and a steam generator; the dust suction fan, the steam generator, and the water tank are mounted to the box cover housing; It is characterized in that the steam vacuum cleaner defines a central axis; in the direction of the central axis, the front end and the rear end of the steam vacuum cleaner are defined; the central axis is perpendicular to the axis of the dust suction fan; the front end of the dust collection box is provided with a dust suction pipeline connection structure for connecting a dust suction pipeline; the front end of the box cover is provided with a steam pipeline connection structure for connecting a steam pipeline; the water tank is arranged at the rear end of the box cover; a generator accommodation cavity for accommodating the steam generator is formed at the front end of the box cover housing; the steam generator is located in the generator accommodation cavity; a pipe hole through which a pipeline connecting the dust suction pipeline connection structure and the steam generator passes is formed on the front wall of the cavity of the generator accommodation cavity; in the direction of the central axis, the dust suction pipeline connection structure, the pipe hole, the steam generator, the dust suction fan, and the water tank are arranged in sequence; the box cover housing is formed with: a dust suction air inlet and a dust suction air outlet; the dust suction air inlet is located below the dust suction fan; the dust suction air outlet is located at the rear end of the box cover housing and in the axial direction of the dust suction fan, and the dust suction air outlet is located between the dust suction air inlet and the water tank; The top of the steam generator is lower than the bottom of the water tank; The top wall of the cavity of the generator accommodation cavity is higher than the bottom of the water tank and lower than the top of the water tank; The top of the steam generator is lower than the top of the dust suction fan and the bottom of the steam generator is higher than the bottom of the dust suction fan; The top of the dust suction fan is higher than the bottom of the water tank and lower than the top of the water tank.

2. The steam vacuum cleaner according to claim 1, characterized in that The steam pipeline connection structure is located directly above the dust suction pipeline connection structure.

3. The steam vacuum cleaner according to claim 1, characterized in that A plurality of support ribs are formed on the bottom wall of the cavity of the generator accommodation cavity; A backing plate is provided between the support ribs and the steam generator.

4. The steam vacuum cleaner according to claim 1, characterized in that The two sides of the pipe hole are respectively aligned with the dust suction pipeline connection structure and the steam generator.

5. The steam vacuum cleaner according to claim 1, characterized in that A plurality of steam generator heat dissipation holes for dissipating heat from the steam generator are provided on the cavity wall of the generator accommodation cavity.

6. The steam vacuum cleaner according to claim 5, characterized in that The number of the steam generator heat dissipation holes is 2; the two steam generator heat dissipation holes are respectively arranged on both sides of the generator accommodation cavity; the pipe hole is located between the two steam generator heat dissipation holes.

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