Flow-increasing air pump with natural air intake

Abstract

The application relates to a flow-increasing air pump with natural air intake, comprising an air pump main body, an air charging channel and a flow-increasing channel, an air inlet of the air charging channel is used for connecting to the output airflow of the air pump main body, an air outlet of the air charging channel is used for connecting to the inner cavity of the air charging product, an air inlet of the flow-increasing channel is used for connecting to the outside of the air pump to connect to the external environment air, and an air outlet of the flow-increasing channel is connected to the air charging channel; a flow guide structure is arranged at the connection position between the flow-increasing channel and the air charging channel; the airflow entering the air charging channel from the air pump main body is guided to surround the air outlet of the flow-increasing channel and converge to the front of the air outlet of the flow-increasing channel and flow to the air outlet of the air charging channel. The application can make the air pump naturally intake the external air into the inside of the air charging product during the air charging process of the air charging product, effectively increase the air intake amount during the air charging process, thereby shortening the air charging time of the air pump to the air charging product, the air charging efficiency is higher, and the energy consumption of the air pump is not additionally increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air pump for inflating products, in particular to an air pump with natural air inlet for increasing air flow. BACKGROUND

[0002] At present, the air pump of the prior art is often used in cooperation with the inflating product, and the air pump is installed in the inflating product to realize automatic inflation of the inflating product. Some large inflating products are fixed with an inflating air pump, and the inflating air pump is provided with an air inlet. When inflating, the air inlet is opened, and the inflating air pump can inflate the air into the inner cavity of the inflating product. After inflation is completed, the air inlet is closed to prevent the air in the inflating product from leaking out. When it is necessary to deflate the inflating product, the deflation function of the air pump can be started to automatically discharge the air in the inflating product.

[0003] However, in actual application, when the volume of the inflating product is large and more air needs to be inflated to be full, since the input air flow of the traditional air pump to the inflating product is generally constant during the execution of inflation, it is generally difficult to additionally increase the inflating air flow, so that the inflation time is longer and the inflation efficiency is reduced. The inflation process not only takes a longer time, but also consumes more power. If the number of air pumps is increased to increase the inflating amount of the inflating product and improve the inflation speed, the overall structure of the air pump will inevitably be more complex and the energy consumption will be higher, which does not conform to the energy-saving and environment-friendly trend of industrial products. SUMMARY

[0004] In order to solve the problems existing in the prior art, the present application provides an air pump with natural air inlet for increasing air flow, which can naturally introduce external air into the inflating product during the inflation process of the air pump to the inflating product, effectively increase the inflating amount during the inflation process, thereby shorten the inflation time of the air pump to the inflating product, and the inflation efficiency is higher and the energy consumption of the air pump is not additionally increased.

[0005] The air pump with natural air inlet for increasing air flow comprises an air pump body, and a fan is arranged in the air pump body. The air pump body is provided with an air duct box. The air duct box is provided with an inflating channel and an air flow increasing channel. An air inlet of the inflating channel is used to connect the output air flow of the air pump body. An air outlet of the inflating channel is used to connect the inner cavity of the inflating product. An air inlet of the air flow increasing channel is used to connect the external environment to connect the external environment air. An air outlet of the air flow increasing channel is connected to the inflating channel. A flow guide structure is arranged at the connection between the air flow increasing channel and the inflating channel. The air flow entering the inflating channel from the air pump body is guided by the flow guide structure to surround the air outlet of the air flow increasing channel and flow to the front of the air outlet of the air flow increasing channel and the air outlet of the inflating channel.

[0006] According to the air pump with natural air intake and flow increasing function, the air intake of the air charging channel is provided with a first one-way valve, the air intake of the flow increasing channel is provided with a second one-way valve; the first one-way valve is connected to the air flow output end of the air pump body and is suitable for being pushed by air flow to open to the inside of the air charging channel in one way; the opposite sides of the second one-way valve are suitable for being pushed by external air pressure to open to the inside of the flow increasing channel in one way after forming air pressure difference; the first one-way valve and the second one-way valve are respectively provided with elastic members, and the first one-way valve and the second one-way valve are respectively driven to reset and close by the elastic members.

[0007] According to the air pump with natural air intake and flow increasing function, the flow guide structure comprises a partition plate and a tapered pipe penetrating through the partition plate; the air charging channel and the flow increasing channel are sealed and separated by the partition plate; the air outlet of the flow increasing channel is arranged at the pipe opening of the tapered pipe, the pipe opening of the tapered pipe is gradually inclined and narrowed and extends to the inside of the air charging channel.

[0008] According to the air pump with natural air intake and flow increasing function, the air charging channel is provided with a flow converging pipe; an annular pressure increasing cavity is formed between the outer wall of the flow converging pipe and the inner wall of the air charging channel, and the air flow output end of the air pump body is connected into the annular pressure increasing cavity; the pipe opening of the tapered pipe extends into the flow converging pipe, and the outer wall of the tapered pipe and the inner wall of the flow converging pipe are spaced apart by a certain gap to form an annular air duct; an annular gap surrounding the outer periphery of the tapered pipe is formed between one port of the flow converging pipe and the partition plate; the annular pressure increasing cavity is connected to the annular air duct through the annular gap.

[0009] According to the air pump with natural air intake and flow increasing function, the flow converging pipe is composed of a straight pipe and a gradually expanding pipe which are connected to each other; the straight pipe extends to the direction of the air outlet of the air charging channel; the annular gap is between the pipe opening of the gradually expanding pipe and the partition plate; the outer wall of the gradually expanding pipe is inclined to the inside of the annular pressure increasing cavity; the inner wall of the gradually expanding pipe surrounds the outer periphery of the tapered pipe and is parallel to the inclined outer wall of the tapered pipe.

[0010] According to the air pump with natural air intake and flow increasing function, the straight pipe is provided with a limiting plate, and the pipe opening of the tapered pipe extends into the straight pipe and abuts against the limiting plate.

[0011] The natural air inlet flow increasing air pump comprises a mounting box and a suction air module, a main air pipe and a secondary air pipe are arranged on the mounting box, an air inlet of the air filling channel and an air inlet of the flow increasing channel are arranged in the main air pipe and the secondary air pipe respectively, the suction air module comprises a jet nozzle and a suction nozzle, when the suction air module is in a first posture in the mounting box, the jet nozzle is in communication with the main air pipe, when the suction air module is in a second posture in the mounting box, the suction nozzle is in communication with the secondary air pipe.

[0012] The natural air inlet flow increasing air pump comprises a mounting box and a suction air module, a main air pipe and a secondary air pipe are arranged on the mounting box, an air inlet of the air filling channel and an air inlet of the flow increasing channel are arranged in the main air pipe and the secondary air pipe respectively, the suction air module comprises a jet nozzle and a suction nozzle, when the suction air module is in a first posture in the mounting box, the jet nozzle is in communication with the main air pipe, when the suction air module is in a second posture in the mounting box, the suction nozzle is in communication with the secondary air pipe.

[0013] The natural air inlet flow increasing air pump comprises a mounting box and a suction air module, a main air pipe and a secondary air pipe are arranged on the mounting box, an air inlet of the air filling channel and an air inlet of the flow increasing channel are arranged in the main air pipe and the secondary air pipe respectively, the suction air module comprises a jet nozzle and a suction nozzle, when the suction air module is in a first posture in the mounting box, the jet nozzle is in communication with the main air pipe, when the suction air module is in a second posture in the mounting box, the suction nozzle is in communication with the secondary air pipe.

[0014] The natural air inlet flow increasing air pump comprises a mounting box and a suction air module, a main air pipe and a secondary air pipe are arranged on the mounting box, an air inlet of the air filling channel and an air inlet of the flow increasing channel are arranged in the main air pipe and the secondary air pipe respectively, the suction air module comprises a jet nozzle and a suction nozzle, when the suction air module is in a first posture in the mounting box, the jet nozzle is in communication with the main air pipe, when the suction air module is in a second posture in the mounting box, the suction nozzle is in communication with the secondary air pipe.

[0015] The air flow increasing air pump with natural air inlet of the application is provided with a wind channel box with an air flow increasing channel and an air charging channel in addition to the air charging channel for connecting the air pump body and inputting air to the air charging product. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced.

[0017] Figure 1 is the perspective view of the air pump of the application;

[0018] Figure 2 is the perspective view of the air suction module of the application;

[0019] Figure 3 is the internal structure diagram of the air suction module of the application;

[0020] Figure 4 is the internal structure diagram of the air pump of the application;

[0021] Figure 5 is the partial enlarged view of Figure 4 ;

[0022] Figure 6 is the internal structure diagram of the air flow increasing box of the application (without cutting the busbar);

[0023] Figure 7is the side view of the flow guide structure of the present application;

[0024] Figure 8 is the side view of the flow guide structure of the present application;

[0025] Figure 9 is the internal structure diagram of the flow increasing box of the present application (with the limiting plate shown);

[0026] Figure 10 is the structure diagram of the installation box of the present application;

[0027] Figure 11 is the structure diagram of the installation box of the present application;

[0028] Figure 12 is the assembly diagram of the suction air module inserted into the installation box in the first posture (for inflating the inflatable product) in the present application;

[0029] Figure 13 is the assembly diagram of the suction air module inserted into the installation box in the second posture (for deflating the inflatable product) in the present application;

[0030] Figure 14 is the structure diagram of the optional embodiment of the present application.

[0031] Reference signs:

[0032] 1. Air pump body;

[0033] 2. Inflation channel, 21, first one-way valve, 22, flow guide pipe, 221, straight pipe, 222, gradually expanding pipe, 223, limiting plate, 23, annular booster chamber, 24, annular air duct, 25, annular gap;

[0034] 3. Flow increasing channel, 31, second one-way valve, 32, first flow increasing gap, 33, second flow increasing gap, 34, elastic push rod;

[0035] 4. Flow guide structure, 41, partition plate, 42, gradually reducing pipe;

[0036] 5. Installation box, 51, main air pipe, 52, auxiliary air pipe;

[0037] 6. Suction air module, 61, air jet nozzle, 62, air suction nozzle, 63, push plate;

[0038] 100. Air duct box, 101, air blower, 102, handle, 103, supporting leg, 104, reinforcing rib, 105, flip cover;

[0039] 200. Telescopic mechanism, 201, first air pressure sensor, 202, second air pressure sensor, 203, wind speed sensor, 204, air density sensor. Detailed Implementation

[0040] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings.

[0041] Example 1

[0042] like Figures 1 to 13 As shown, a flow booster pump with natural air intake is disclosed. The pump structure includes a pump body 1 and an air duct box 100 installed at the bottom of the pump body 1. The air duct box 100 is provided with an inflation channel 2, a flow booster channel 3 and a flow guide structure 4. The air inlet of the inflation channel 2 is used to connect to the output airflow of the pump body 1, and the air outlet of the inflation channel 2 is used to connect to the inner cavity of the inflatable product. The air inlet of the flow booster channel 3 is used to connect to the outside of the pump to access the external ambient air. The air outlet of the flow booster channel 3 is connected forward to the inflation channel 2. The flow guide structure 4 is fixed at the connection between the flow booster channel 3 and the inflation channel 2. The flow guide structure 4 guides the airflow entering the inflation channel 2 from the pump body 1 to surround the air outlet of the flow booster channel 3 and converge in front of the air outlet of the flow booster channel 3 and flow towards the air outlet of the inflation channel 2.

[0043] It is understood that, in addition to the inflation channel 2 used to connect to the air pump body 1 and input air into the inflatable product, the air pump in this embodiment also has an air duct box 100 with an internal booster channel 3 and an inflation channel 2. The air inlet of the booster channel 3 is used to connect to the outside of the air pump, and the air outlet of the booster channel 3 is connected to the inflation channel 2, so that natural air from the outside environment can enter the inflation channel 2 through the booster channel 3. In addition, a guide structure 4 is provided at the connection between the booster channel 3 and the inflation channel 2. During the process of the air pump body 1 delivering inflation air to the inflatable product through the inflation channel 2, the guide structure 4 guides the airflow entering the inflation channel 2 from the air pump body 1 to surround the air outlet of the booster channel 3 and converge in front of the air outlet of the booster channel 3 and flow towards the air outlet of the inflation channel 2. The "movement" can be understood as follows: the airflow surrounding the booster channel 3 continues to converge and flow forward in front of the outlet of the booster channel 3, thus continuously carrying the air at the outlet of the booster channel 3 forward as well. This brings out the air inside the booster channel 3, creating a negative pressure inside the booster channel 3. Under the action of the air pressure difference, the air from the external environment can automatically enter the booster channel 3 and continue to enter the inflation channel 2 through the booster channel 3. Together with the airflow in the inflation channel 2, it is transported forward to the inner cavity of the inflatable product. In this way, the air pump can bring the external air into the interior of the inflatable product during the inflation process, effectively increasing the air intake during the inflation process, thereby shortening the inflation time of the inflatable product, increasing the inflation efficiency, and without increasing the energy consumption of the air pump.

[0044] In one embodiment, further, the air inlet of the air charging passage 2 is provided with a first one-way valve 21, and the air inlet of the flow increasing passage 3 is provided with a second one-way valve 31. The first one-way valve 21 is upwardly butted against the air flow output end of the air pump body 1, and after being pushed downward by the air flow from above, the first one-way valve 21 can be opened in one direction to the inside of the air charging passage 2, while after the upper and lower sides of the second one-way valve 31 form an air pressure difference, the second one-way valve 31 can be pushed downward by the external air pressure from above and opened in one direction to the inside of the flow increasing passage 3. In addition, the first one-way valve 21 and the second one-way valve 31 are respectively provided with elastic members, and through the respective elastic members, the first one-way valve 21 and the second one-way valve 31 are respectively driven to reset and close.

[0045] It can be understood that through the above structure, in the initial stage of inflating the inflatable product, when the air pump body 1 starts and inputs downward airflow to the inflation channel 2, the first one-way valve 21 arranged in the air inlet of the inflation channel 2 can be automatically opened downward under the thrust of the air flow of the air pump, so that the inflation channel 2 can be conveniently and automatically opened during inflation, without the need for additional electric control structure, and the operation is more simple and convenient. When the air flow of the air pump body 1 continuously enters the inflation channel 2 and the air in the flow-increasing channel 3 is also continuously forwarded together under the flow guiding effect of the flow guiding structure 4, as the internal air pressure of the flow-increasing channel 3 decreases and forms negative pressure, the air of the external environment can automatically push the second one-way valve 31 in the air inlet of the flow-increasing channel 3 downward and naturally supplement into the flow-increasing channel 3 under the action of air pressure difference, so that the air in the inflation channel 2 can be conveniently and automatically supplemented during inflation, also without the need for additional electric control structure, and the operation is more simple and convenient. In this inflation stage, the natural intake of the external environment and the active air supply of the air pump body 1 can be used together to inflate the inflatable product, a larger amount of air can be effectively input to the inflatable product which has not been significantly inflated in the initial stage of inflation, and the inflation efficiency is effectively improved. However, due to the above structure, in the later stage of inflating the inflatable product, as the inflatable product continues to expand and the internal air pressure gradually increases to a certain extent, the air flow from the air pump body 1 into the inflation channel 2 will be blocked by the internal air pressure of the inflatable product, so that it is difficult to continue to effectively output the air in the flow-increasing channel 3 forward, and even a part of the air flow will enter the flow-increasing channel 3 in reverse through the air outlet of the flow-increasing channel 3, so that the pressure difference between the internal air pressure of the flow-increasing channel 3 and the external air pressure decreases, and even the internal air pressure of the flow-increasing channel 3 can be greater than the external air pressure. At this time, the elastic member arranged on the second one-way valve 31 can automatically drive the second one-way valve 31 to reset and close. In this stage, the inflatable product has been significantly inflated and the internal pressure has increased, and after the second one-way valve 31 is automatically closed, it can be ensured that the air flow from the air pump body 1 into the inflation channel 2 will not be depressurized, and it can be ensured that the inflatable product can be continuously inflated through the air outlet of the inflation channel 2, until the air pressure of the inflatable product reaches the preset degree. Finally, when the inflation is completed and the air flow output of the air pump body 1 is stopped, the elastic member can drive the first one-way valve 21 to automatically close. Since the first one-way valve 21 and the second one-way valve 31 are both closed at this time, the air in the inflatable product cannot leak out through the inflation channel 2 and the flow-increasing channel 3, and the internal air pressure of the inflatable product is maintained.

[0046] In one embodiment, specifically, the flow guide structure 4 comprises a partition plate 41 and a tapered pipe 42, the air charging passage 2 is sealed and separated from the air flow increasing passage 3 by the partition plate 41, the tapered pipe 42 penetrates through the partition plate 41, the air outlet of the air flow increasing passage 3 is arranged at the pipe opening of the tapered pipe 42, so that the air flow increasing passage 3 can be connected to the air charging passage 2 in front through the tapered pipe 42, in addition, the pipe opening of the tapered pipe 42 is gradually inclined and narrowed and extends to the inside of the air charging passage 2 in front. It can be understood that, since the air charging passage 2 is sealed and separated from the air flow increasing passage 3 by the partition plate 41, it can be ensured that the air in the air flow increasing passage 3 can only enter the air charging passage 2 through the tapered pipe 42, since the pipe opening of the tapered pipe 42 is gradually inclined and narrowed and extends to the inside of the air charging passage 2 in front, the annular inclined surface of the outer wall of the tapered pipe 42 can effectively guide the air flow entering the air charging passage 2 from the air pump body 1 to surround the air outlet of the air flow increasing passage 3 and converge in front of the air outlet of the air flow increasing passage 3, so as to smoothly guide the air flow to flow in the direction of the air outlet of the air charging passage 2, at the same time, the air at the air outlet of the air flow increasing passage 3 flows forward, finally, the negative pressure state in the air flow increasing passage 3 can be smoothly realized and the external air can be naturally supplemented into the air flow increasing passage 3.

[0047] In one embodiment, specifically, a transversely extending manifold 22 is fixed at a central position inside the inflation channel 2, and an annular plenum 23 is formed between the outer wall of the manifold 22 and the inner wall of the inflation channel 2, the airflow output end of the air pump body 1 is connected into the annular plenum 23, so that the output airflow of the air pump body 1 will first enter into the annular plenum 23, and the nozzle of the taper pipe 42 extends forward into the manifold 22, the outer wall of the taper pipe 42 is spaced apart from the inner wall of the manifold 22 to form an annular air channel 24, the annular air channel 24 is connected forward to the inner cavity of the manifold 22, and the annular gap 25 is formed between the port at the rear end of the manifold 22 and the partition plate 41, the annular gap 25 surrounds the outer periphery of the taper pipe 42, wherein the annular plenum 23 is connected to the annular air channel 24 through the annular gap 25. It can be understood that through the above structure, the output airflow of the air pump body 1 will first fill the annular plenum 23, and then enter the annular air channel 24 through the annular gap 25, at this time, since the space of the annular gap 25 is much smaller than that of the annular plenum 23, the internal air pressure of the annular plenum 23 is higher, and the airflow inside the annular plenum 23 will increase significantly in speed when output from the annular gap 25, forming a high-speed airflow, which is guided by the outer wall of the taper pipe 42 in the annular air channel 24 and gathered to the front of the air outlet of the flow-increasing channel 3, can more efficiently flow forward with the air at the air outlet of the flow-increasing channel 3, accelerate the forward flow of the air inside the flow-increasing channel 3, and finally can accelerate the natural intake of the outside air into the flow-increasing channel 3, further improving the inflation efficiency of the air pump to the inflated product. It should be noted that since the annular plenum 23, the annular gap 25 and the annular air channel 24 are annular, the airflow can be more effectively guided to surround the air outlet of the flow-increasing channel 3.

[0048] In one embodiment, specifically, the flow converging pipe 22 is composed of a straight pipe 221 and a converging pipe 222, in this embodiment, the straight pipe 221 and the converging pipe 222 are mutually butted in front and back, that is, the converging pipe 222 is butted in front of the straight pipe 221, and the straight pipe 221 extends to the direction of the air outlet of the air flow channel 2, the annular gap 25 is between the pipe opening of the rear end of the converging pipe 222 and the partition plate 41, the outer wall of the converging pipe 222 is inclined to the inside of the annular plenum 23, and the inner wall of the converging pipe 222 surrounds the outer periphery of the converging pipe 42 and is parallel to the inclined outer wall of the converging pipe 42. It can be understood that in the above structure, since the outer wall of the converging pipe 222 is inclined to the inside of the annular plenum 23, it can hinder the airflow in the annular plenum 23, thereby further increasing the internal air pressure of the annular plenum 23. Since the inner wall of the converging pipe 222 surrounds the outer periphery of the converging pipe 42 and is parallel to the inclined outer wall of the converging pipe 42, the inner wall of the annular air duct 24 can form a smooth inclined flow guide surface, which can more effectively guide the airflow output from the annular plenum 23 to surround the air outlet of the flow increasing channel 3 and converge in front of the air outlet of the flow increasing channel 3.

[0049] In one embodiment, specifically, a limiting plate 223 is fixed in the straight pipe 221, the pipe opening of the converging pipe 42 extends forward into the straight pipe 221, and the pipe opening of the converging pipe 42 abuts against the limiting plate 223 forward. It can be understood that under the limiting action of the limiting plate 223, it can be ensured that the pipe opening of the converging pipe 42 accurately enters forward into the straight pipe 221 during assembly. The structure that the pipe opening of the converging pipe 42 extends forward into the straight pipe 221 can more effectively ensure that the airflow output from the air pump body 1 can only converge in front of the air outlet of the flow increasing channel 3 in the straight pipe 221, so that the airflow can stably flow forward in the straight pipe 221.

[0050] In one embodiment, specifically, the air pump body 1 comprises a mounting box 5 and a suction air module 6, the mounting box 5 is integrally formed with a main air pipe 51 and a secondary air pipe 52. The air inlet of the inflation channel 2 is arranged in the main air pipe 51, and the air inlet of the flow increasing channel 3 is arranged in the secondary air pipe 52. The inside of the suction air module 6 is installed with a blower 101, and the outside of the suction air module 6 is provided with a jet nozzle 61 and a suction nozzle 62. The air outlet end of the side of the blower 101 corresponds to the jet nozzle 61, and the air inlet end of the center of the blower 101 communicates with the suction nozzle 62 inside the blower 101, so that when the blower 101 inside the suction air module 6 operates, it can suck the air outside through the suction nozzle 62 and blow out the air flow outside through the jet nozzle 61. On the other hand, when the suction air module 6 is in the first position in the mounting box 5, the jet nozzle 61 and the main air pipe 51 are in mutual butt joint communication, and when the suction air module 6 is in the second position in the mounting box 5, the suction nozzle 62 and the secondary air pipe 52 are in mutual butt joint communication. More specifically, the jet nozzle 61 and the suction nozzle 62 are distributed on the upper and lower sides of the suction air module 6 and staggered with each other in front and back positions. The suction air module 6 is detachably inserted into the inner cavity of the mounting box 5, and the suction air module 6 switches between the first position and the second position in the mounting box 5 by different insertion directions. When the suction air module 6 is inserted into the mounting box 5 in the first position, the jet nozzle 61 is connected to the inside of the main air pipe 51 of the mounting box 5, and the suction nozzle 62 is connected to the outside of the mounting box 5. When the suction air module 6 is inserted into the mounting box 5 in the second position, the suction nozzle 62 is connected to the inside of the secondary air pipe 52 of the mounting box 5, and the jet nozzle 61 is connected to the outside of the mounting box 5. That is to say, when the inflation product needs to be inflated, the suction air module 6 is inserted downward into the mounting box 5 in the first position. In the first position, the jet nozzle 61 of the suction air module 6 faces downward and connects downward to the main air pipe 51 of the mounting box 5, and the suction nozzle 62 faces upward and connects outward to the outside environment of the mounting box 5. Therefore, the suction air module 6 can smoothly suck the outside air through the suction nozzle 62 and smoothly inflate the inflation channel 2 in the main air pipe 51 of the mounting box 5 and the air duct box 100 through the jet nozzle 61, and perform the inflation work of the inflation product. Conversely, when the inflation product needs to be deflated, only the direction of the suction air module 6 inserted into the mounting box 5 is changed, and the suction air module 6 is inserted downward into the mounting box 5 in the second position. In the second position, the suction nozzle 62 of the suction air module 6 faces downward and connects downward to the secondary air pipe 52 of the mounting box 5, and the jet nozzle 61 faces upward and connects outward to the outside environment of the mounting box 5. Therefore, the suction air module 6 can smoothly suck the inside air of the flow increasing channel 3 in the air duct box 100 through the suction nozzle 62, and further suck out the inside air of the inflation channel 2 and the inflation product through the flow increasing channel 3, and realize the deflation work of the inflation product. The sucked out gas can be discharged outside through the jet nozzle 61. Through the above structure, the inflation function and the deflation function of the air pump can be conveniently switched.

[0051] Preferably, the second one-way valve 31 is connected with an elastic push rod 34 vertically extending towards the suction air module 6, the inner cavity of the suction nozzle 62 of the suction air module 6 is fixed with a push plate 63, when the suction air module 6 is in the second position in the installation box 5, the push plate 63 is inserted into the auxiliary air pipe 52 with the suction nozzle 62, and the push plate 63 pushes the elastic push rod 34 downward, so as to open the second one-way valve 31, thereby ensuring that the suction nozzle 62 of the suction air module 6 can be kept in communication with the flow-increasing channel 3 in the second position, and finally ensuring that the suction nozzle 62 of the suction air module 6 can keep the air in the flow-increasing channel 3 and the air charging channel 2 inside the suction air duct box 100, and realize the deflation work on the air charging product.

[0052] Optionally, in order to facilitate the smooth disassembly of the suction air module 6 from the installation box 5, the outer walls on the upper and lower sides of the suction air module 6 are respectively pivotally connected with a handle 102, and the two handles 102 are respectively folded on the outer wall of the suction air module 6. When it is necessary to disassemble the suction air module 6, the user can manually pull out the suction air module 6 in the installation box 5 by rotating the handle 102 to open it, so as to facilitate the quick disassembly of the suction air module 6 in the installation box 5 when it is necessary to switch the air charging function and the deflation function of the air pump.

[0053] In one embodiment, when the suction air module 6 is in the first position in the installation box 5 (i.e. when it is necessary to charge the air charging product), a first flow-increasing gap 32 is reserved between the side of the suction air module 6 provided with the air jet nozzle 61 and the bottom wall of the installation box 5, and the lower side of the first flow-increasing gap 32 is connected to the auxiliary air pipe 52. At the same time, a vertically extending second flow-increasing gap 33 is reserved between the outer side wall of the suction air module 6 and the inner side wall of the installation box 5, the upper end of the second flow-increasing gap 33 extends to the box opening of the installation box 5 and is connected to the external environment of the installation box 5, and the lower end of the second flow-increasing gap 33 is connected to the first flow-increasing gap 32. Through the above structure, it can be ensured that the external air can smoothly enter the flow-increasing channel 3 through the second flow-increasing gap 33 and the first flow-increasing gap 32.

[0054] In addition, one side of the installation box 5 is also hingedly connected with a flip cover 105, the flip cover 105 is integrally formed with an elastic buckle (not labeled in the figure), after the flip cover 105 is rotated to open, the suction air module 6 can be inserted into the installation box 5, and after the flip cover 105 closes the box opening of the installation box 5 and the elastic buckle is buckled to the installation box 5, the suction air module 6 can be fixed and stored in the installation box 5.

[0055] Specifically, in order to ensure that the suction air module 6 can smoothly reserve the first and second flow-increasing gaps 32 and 33 after being inserted into the installation box 5 in the first posture, the side of the suction air module 6, on which the air injection nozzle 61 is arranged, is fixed with a plurality of supporting feet 103, which can ensure that the suction air module 6 and the installation box 5 are limited in the vertical direction, so as to smoothly reserve the first flow-increasing gap 32. Meanwhile, the inner side wall of the installation box 5 is integrally formed with a plurality of vertically extending reinforcing ribs 104, which can not only strengthen the installation box 5, but also ensure that the suction air module 6 and the installation box 5 smoothly reserve the second flow-increasing gap 33 in the horizontal direction.

[0056] Embodiment Two

[0057] This embodiment is a further optional solution of the above-mentioned embodiment one. In order to ensure that the air pump device can maintain the inflating efficiency of the inflating product when a user uses the air pump device in a high-altitude area with low atmospheric pressure, the air pump device of the present application can also be used in the following way: As shown in the figure, the manifold 22 is movably installed in the inflating channel 2, and the inflating channel 2 is also installed with a telescopic mechanism 200, which is drivingly connected to the manifold 22 and can drive the manifold 22 to move horizontally. The size of the annular gap 25 between the manifold 22 and the partition plate 41 is adjusted by the horizontal movement of the manifold 22 driven by the telescopic mechanism 200. In addition, the inside of the air duct box 100 is installed with a first air pressure sensor 201, a wind speed sensor 203 and an air density sensor 204. Specifically, the first air pressure sensor 201 is located in the annular plenum 23, so that the control system of the air pump can monitor the air pressure in the annular plenum 23. The wind speed sensor 203 is located in the manifold 22, so that the control system of the air pump can monitor the air flow rate in the manifold 22. The air density sensor 204 is installed in the manifold 22, so that the control system of the air pump can monitor the current air density ρ (of course, the installation position of the air density sensor 204 is not strictly limited, and it can also be installed outside the air duct box 100), in addition, the outside of the air duct box 100 is installed with a second air pressure sensor 202, so that the control system of the air pump can monitor the atmospheric pressure P B outside. When in operation, the control system of the air pump device monitors the air pressure P A in the annular plenum 23 and the atmospheric pressure P d outside through the first air pressure sensor 201 and the second air pressure sensor 202 respectively, monitors the air flow rate v e in the manifold 22 through the wind speed sensor 203, and monitors the current air density p through the air density sensor 204, and determines the target area size S e according to the formula , and controls the telescopic mechanism 200 to adjust the size of the annular gap 25 to the target area size S e .The telescopic mechanism 200 drives the manifold 22 to move laterally, adjusting the size of the annular gap 25 so that the annular gap 25 inside the air duct box 100 is adjusted to the target area size S. e This allows for flexible adjustment of the internal structure of the air duct box 100 based on changes in external atmospheric pressure.

[0058] In the above formula, S d Let P be the cross-sectional area of ​​manifold 22, and ΔP be P. A With P B The difference, i.e., the pressure difference between the internal air pressure of the annular pressurization chamber 23 and the external atmospheric pressure, is used to adjust the size of the annular gap 25 accordingly based on the actual change of ΔP. d The flow coefficient is determined based on the shape and size of the annular gap 25.

[0059] It should be noted that the above formula is derived based on the principles of fluid mechanics. According to the principles of fluid mechanics, the formula... The airflow Q from the annular booster chamber 23 through the annular gap 25 is obtained due to the cross-sectional area S of the manifold 22. d Since the airflow rate Q through the annular gap 25 is constant, the airflow rate Q through the manifold 22 is equal to the airflow rate Q through the manifold 22. This allows us to derive the mathematical relationship. Finally, the formula was calculated.

[0060] In practical applications, when users use the air pump device in high-altitude areas with low atmospheric pressure, the driving force of external ambient air entering the booster channel 3 weakens, resulting in a reduction in the amount of air entering the booster channel 3 per unit time. This leads to a significant reduction in the amount of external ambient air input that is transported forward to the inner cavity of the inflatable product along with the airflow in the inflation channel 2 per unit time. Ultimately, this reduces the inflation efficiency of the air pump device for the inflatable product, causing a prolonged inflation time. In such cases, the air pressure P in the annular booster chamber 23, as calculated by the air pump device system, will decrease. B Compared with the external atmospheric pressure P A The difference ΔP between them will increase, that is, assuming the air pressure P in the annular pressurization chamber 23... B The external atmospheric pressure P remains unchanged. A As the altitude increases and the pressure decreases, ΔP will increase. Therefore, the control system of the air pump device can calculate the target area S of the annular gap 25 based on the currently measured air pressure difference ΔP, according to the solution in this embodiment. e The rear control telescopic mechanism 200 drives the manifold 22 to move laterally, adjusting the size of the annular gap 25 so that the annular gap 25 inside the air duct box 100 is adjusted to the target area size S. eThis increases the airflow velocity at the front end of the converging tube 42, thereby enhancing the driving effect of the airflow from the annular gap 25 on the converging tube 42 and the air inside the booster channel 3, accelerating the decrease in air pressure inside the booster channel 3, allowing air from the external environment to enter the booster channel 3 more quickly, and ensuring that the air pump device can maintain the inflation efficiency of the inflatable product even in high-altitude areas with low atmospheric pressure.

[0061] Assumption:

[0062] The system calculated a pressure difference ΔP = 1000 Pa;

[0063] The cross-sectional area S of manifold 22 d =100mm 2 ;

[0064] Flow coefficient C d =0.8;

[0065] The air density sensor 204 measured the current ambient air density as ρ = 1.2 kg / m³. 3 ;

[0066] Wind speed sensor 203 monitors the air velocity v inside manifold 22. d =10m / s;

[0067] Calculate the target area S that the annular gap 25 needs to be adjusted to according to Formula 1. e :

[0068]

[0069] Finally, the control system calculates the target area size S as described above. e The telescopic mechanism 200 is used to drive the manifold 22 to move laterally, adjusting the size of the annular gap 25 so that the annular gap 25 inside the air duct box 100 is adjusted to the target area size of 1767.8mm. 2 This ensures that the air pump device can maintain inflation efficiency for inflatable products even in high-altitude areas with low atmospheric pressure.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Simple modifications or equivalent substitutions of the various technical features of this embodiment are all within the protection scope of the present invention.

Claims

1. A flow booster pump with natural air intake, comprising a pump body (1), wherein a fan (101) is disposed inside the pump body (1), characterized in that, The air pump body (1) is provided with an air duct box (100), and the air duct box (100) is provided with an inflation channel (2) and a flow boosting channel (3). The air inlet of the inflation channel (2) is used to connect to the output airflow of the air pump body (1), and the air outlet of the inflation channel (2) is used to connect to the inner cavity of the inflation product. The air inlet of the flow boosting channel (3) is used to connect to the outside of the air pump to connect to the external ambient air, and the air outlet of the flow boosting channel (3) is connected to the inflation channel (2). A flow guide structure (4) is provided at the connection between the flow boosting channel (3) and the inflation channel (2). The flow guide structure (4) guides the airflow from the air pump body (1) into the inflation channel (2) to surround the air outlet of the flow boosting channel (3) and converge to the front of the air outlet of the flow boosting channel (3) and flow towards the air outlet of the inflation channel (2). The flow guiding structure (4) includes a partition plate (41) and a tapered tube (42) passing through the partition plate (41); the air-filling channel (2) and the flow-increasing channel (3) are sealed and separated by the partition plate (41); the air outlet of the flow-increasing channel (3) is located at the opening of the tapered tube (42), and the opening of the tapered tube (42) gradually narrows and extends into the interior of the air-filling channel (2); A manifold (22) is provided inside the inflation channel (2); An annular pressurization chamber (23) is formed between the outer wall of the manifold (22) and the inner wall of the inflation channel (2), and the airflow output end of the air pump body (1) is connected to the annular pressurization chamber (23); the opening of the tapered tube (42) extends into the manifold (22), and the outer wall of the tapered tube (42) and the inner wall of the manifold (22) are separated by a certain gap to form an annular air duct (24); an annular gap (25) is formed between one end of the manifold (22) and the partition plate (41) surrounding the outer periphery of the tapered tube (42); the annular pressurization chamber (23) is connected to the annular air duct (24) through the annular gap (25). The air pump body (1) includes a mounting box (5) and a suction module (6); the mounting box (5) is provided with a main air pipe (51) and a secondary air pipe (52); the air inlet of the inflation channel (2) and the air inlet of the flow boosting channel (3) are respectively located in the main air pipe (51) and the secondary air pipe (52); the suction module (6) includes a jet nozzle (61) and a suction nozzle (62); when the suction module (6) is in the first position in the mounting box (5), the jet nozzle (61) is connected to the main air pipe (51); when the suction module (6) is in the second position in the mounting box (5), the suction nozzle (62) is connected to the secondary air pipe (52).

2. The air pump with natural air intake according to claim 1, characterized in that, The air inlet of the inflation channel (2) is provided with a first one-way valve (21), and the air inlet of the flow boosting channel (3) is provided with a second one-way valve (31). The first one-way valve (21) is connected to the airflow output end of the air pump body (1) and is adapted to be pushed by the airflow to open unidirectionally into the inflation channel (2). The second one-way valve (31) is adapted to be pushed by the external air pressure to open unidirectionally into the flow boosting channel (3) after the relative two sides form an air pressure difference. The first one-way valve (21) and the second one-way valve (31) are respectively provided with elastic elements, and the first one-way valve (21) and the second one-way valve (31) are respectively driven by the elastic elements to reset and close.

3. The flow-boosting air pump with natural air intake according to claim 1, characterized in that, The manifold (22) is composed of a straight tube (221) and a diffuser (222) that are connected to each other; the straight tube (221) extends toward the outlet of the inflation channel (2); the annular gap (25) is located between the opening of the diffuser (222) and the partition plate (41); the outer wall of the diffuser (222) is inclined toward the interior of the annular pressurization chamber (23); the inner wall of the diffuser (222) surrounds the outer periphery of the converging tube (42) and is parallel to the inclined outer wall of the converging tube (42).

4. The flow-boosting air pump with natural air intake according to claim 3, characterized in that, A limiting plate (223) is provided inside the straight tube (221), and the opening of the tapered tube (42) extends into the straight tube (221) and abuts against the limiting plate (223).

5. The flow-boosting air pump with natural air intake according to claim 2, characterized in that, The jet nozzle (61) and the suction nozzle (62) are distributed on opposite sides of the suction module (6) and staggered from each other; the suction module (6) is detachably inserted into the inner cavity of the mounting box (5), and the suction module (6) switches between a first posture and a second posture in the mounting box (5) by different insertion directions; when the suction module (6) is inserted into the mounting box (5) in the first posture, the jet nozzle (61) is internally connected to the main air pipe (51) of the mounting box (5), and the suction nozzle (62) is externally connected to the external environment of the mounting box (5); when the suction module (6) is inserted into the mounting box (5) in the second posture... 5) When inside, the suction nozzle (62) is internally connected to the auxiliary air pipe (52) of the mounting box (5), and the jet nozzle (61) is externally connected to the external environment of the mounting box (5); the second one-way valve (31) is connected to an elastic push rod (34) extending towards the suction module (6); the suction nozzle (62) of the suction module (6) is provided with a push plate (63); when the suction module (6) is in the second posture inside the mounting box (5), the push plate (63) is inserted into the auxiliary air pipe (52) along with the suction nozzle (62) and pushes the elastic push rod (34) to open the second one-way valve (31).

6. The flow-boosting air pump with natural air intake according to claim 1, characterized in that, When the suction module (6) is in the first position inside the mounting box (5), a first flow-increasing gap (32) is reserved between the side of the suction module (6) with the air nozzle (61) and the bottom wall of the mounting box (5); the first flow-increasing gap (32) is connected to the auxiliary air pipe (52); a second flow-increasing gap (33) is reserved between the outer side wall of the suction module (6) and the inner side wall of the mounting box (5); one end of the second flow-increasing gap (33) extends to the opening of the mounting box (5) and is connected to the external environment of the mounting box (5), and the other end of the second flow-increasing gap (33) is connected to the first flow-increasing gap (32).

7. The flow-boosting air pump with natural air intake according to claim 5, characterized in that, The suction module (6) has a handle (102) pivotally connected to the side with the air nozzle (61) and the side with the suction nozzle (62), and each handle (102) is folded on the outer wall of the suction module (6).

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