Flow-increasing air pump with natural air inlet function

Abstract

The flow-increasing air pump comprises an air pump body, an air inflation channel and a flow-increasing channel, an air inlet of the air inflation channel is used for being connected with output air flow of the air pump body, an air outlet of the air inflation channel is used for being connected with an inner cavity of an air inflation product, and an air inlet of the flow-increasing channel is used for being communicated with the outside of the air pump so as to be connected with external environment air. An air outlet of the flow increasing channel is connected to the inflation channel; a flow guide structure is arranged at the communication position between the flow increasing channel and the inflation channel. Air flow entering the inflation channel from the air pump body is guided by the flow guide structure to surround the air outlet of the flow increasing channel, converge in front of the air outlet of the flow increasing channel and flow towards the air outlet of the inflation channel. According to the air pump, in the process that the air pump inflates the inflatable product, external air can naturally enter the interior of the inflatable product, the air inflow in the inflation process is effectively increased, and therefore the inflation time of the air pump to the inflatable product is shortened, the inflation efficiency is higher, and energy consumption of the air pump cannot be additionally increased.

Description

Technical Field

[0001] The invention relates to the technical field of air pumps for inflatable products, and in particular to a flow-increasing air pump with natural air intake. Background Art

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

[0003] However, in actual applications, when the volume of the inflatable product is large and more air is needed to fill it, it is generally difficult to increase the additional air flow because the input airflow of the traditional air pump to the inflatable product is generally constant during the inflation process. This will result in a longer inflation time and reduced inflation efficiency. The inflation process will not only take longer, but also consume more electricity. If the inflation volume and inflation speed of the inflatable product are increased by increasing the number of air pumps, the overall structure of the air pump will inevitably become more complicated and the energy consumption will be higher, which is not in line with the energy-saving and environmental protection trend of industrial products. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present invention provides a flow-increasing air pump with natural air intake, which can allow external air to naturally enter the interior of the inflatable product during the process of the air pump inflating the inflatable product, effectively increasing the air intake volume during the inflation process, thereby shortening the inflation time of the inflatable product by the air pump, improving the inflation efficiency, and not increasing the energy consumption of the air pump.

[0005] The present invention provides a flow-increasing air pump with natural air intake, comprising an air pump body, wherein a fan is arranged inside the air pump body, and the characterised in that an air duct box is arranged on the air pump body, wherein an inflation channel and a flow-increasing channel are arranged inside the air duct box, the air inlet of the inflation channel is used to access the output airflow of the air pump body, the air outlet of the inflation channel is used to access the inner cavity of the inflatable product, the air inlet of the flow-increasing channel is used to connect to the outside of the air pump to access the external ambient air, and the air outlet of the flow-increasing channel is connected to the inflation channel; a guide structure is arranged at the connection point between the flow-increasing channel and the inflation channel; the airflow entering the inflation channel from the air pump body is guided by the guide structure to surround the air outlet of the flow-increasing channel and converge in front of the air outlet of the flow-increasing channel and flow towards the air outlet of the inflation channel.

[0006] According to a flow-increasing air pump with natural air intake of the present invention, the air inlet of the inflation channel is provided with a first one-way valve, and the air inlet of the flow-increasing channel is provided with a second one-way valve; the first one-way valve is connected to the airflow output end of the air pump body and is suitable for being pushed by the airflow to open one-way to the inside of the inflation channel; the second one-way valve is suitable for being pushed by external air pressure and opening one-way to the inside of the flow-increasing channel after an air pressure difference is formed on the opposite sides of the second one-way valve; the first one-way valve and the second one-way valve are respectively provided with elastic parts, and the first one-way valve and the second one-way valve are respectively driven to reset and close by each elastic part.

[0007] According to a flow-increasing air pump with natural intake of the present invention, the flow guide structure includes a partition plate and a tapered tube penetrating the partition plate; the inflation 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 mouth of the tapered tube, and the pipe mouth of the tapered tube gradually tilts and narrows and extends to the interior of the inflation channel.

[0008] According to a flow-boosting air pump with natural air intake of the present invention, a confluence pipe is arranged in the inflation channel; an annular boosting chamber is formed between the outer wall of the confluence pipe and the inner wall of the inflation channel, and the airflow output end of the air pump body is connected to the annular boosting chamber; the pipe mouth of the taper pipe extends into the confluence pipe, and the outer wall of the taper pipe and the inner wall of the confluence pipe are spaced a certain distance apart to form an annular air duct; an annular gap surrounding the outer circumference of the taper pipe is formed between one port of the confluence pipe and the partition plate; the annular boosting chamber is connected to the annular air duct through the annular gap.

[0009] According to a flow-increasing air pump with natural air intake of the present invention, the manifold is composed of a straight tube and a gradually expanding tube that are connected to each other; the straight tube extends toward the air outlet of the inflation channel; the annular gap is between the pipe mouth of the gradually expanding tube and the partition plate; the outer wall of the gradually expanding tube is inclined toward the inside of the annular boosting chamber; the inner wall of the gradually expanding tube surrounds the outer circumference of the gradually converging tube and is parallel to the inclined outer wall of the gradually converging tube.

[0010] According to the flow-increasing air pump with natural air intake of the present invention, a limit plate is arranged in the straight extension pipe, and the pipe opening of the tapered pipe extends into the straight extension pipe and abuts against the limit plate.

[0011] According to a flow-increasing air pump with natural air intake of the present invention, the air pump body comprises an installation box and an air suction module; a main air pipe and a secondary air pipe are arranged on the installation box; the air inlet of the inflation channel and the air inlet of the flow-increasing channel are respectively arranged in the main air pipe and the secondary air pipe; the air suction module comprises an air jet nozzle and an air suction nozzle; when the air suction module is in a first posture in the installation box, the air jet nozzle and the main air pipe are connected to each other; when the air suction module is in a second posture in the installation box, the air suction nozzle and the secondary air pipe are connected to each other.

[0012] 20. The air intake hood according to claim 19, wherein the air intake nozzle and the air suction nozzle are distributed on opposite sides of the air suction module and are staggered with each other; the air suction module is detachably inserted into the inner cavity of the installation box, and the air suction module switches between a first posture and a second posture in the installation box through different insertion directions; when the air suction module is inserted into the installation box in the first posture, the air suction nozzle is internally connected to the main air pipe of the installation box, and the air suction nozzle is externally connected to the external environment of the installation box; when the air suction module is inserted into the installation box in the second posture, the air suction nozzle is internally connected to the secondary air pipe of the installation box, and the air suction nozzle is externally connected to the external environment of the installation box; the second one-way valve is connected to an elastic push rod extending toward the direction of the air suction module; a push plate is provided in the inner cavity of the air suction nozzle of the air suction module; when the air suction module is in the second posture in the installation box, the push plate is inserted into the secondary air pipe with the air suction nozzle and pushes the elastic push rod to open the second one-way valve.

[0013] According to a flow-increasing air pump with natural air intake of the present invention, when the air suction module is in a first posture in the installation box, a first flow-increasing gap is reserved between a side of the air suction module provided with an air nozzle and the bottom wall of the installation box; the first flow-increasing gap is connected to the auxiliary air pipe; a second flow-increasing gap is reserved between the outer wall of the air suction module and the inner wall of the installation box; one end of the second flow-increasing gap extends to the box opening of the installation box and is connected to the external environment of the installation box, and the other end of the second flow-increasing gap is connected to the first flow-increasing gap.

[0014] According to the flow-increasing air pump with natural air intake of the present invention, the side of the air suction module provided with the air nozzle and the side provided with the air suction nozzle are respectively pivotally connected with a turning handle, and each turning handle is folded on the outer wall of the air suction module.

[0015] A flow-increasing air pump with natural air intake of the present invention has, in addition to an inflation channel for docking with an air pump body and inputting air to an inflatable product, an additional air duct box with a flow-increasing channel and an inflation channel therein, the air inlet of the flow-increasing channel being used to connect to the outside of the air pump, while the air outlet of the flow-increasing channel is connected to the inflation channel, so that natural air from the external environment can enter the inflation channel through the flow-increasing channel. In addition, a guide structure is provided at the connection between the flow-increasing channel and the inflation channel. In the process of the air pump body conveying an inflation airflow to the inflatable product through the inflation channel, the guide structure guides the airflow entering the inflation channel from the air pump body to surround the air outlet of the flow-increasing channel and converge in front of the air outlet of the flow-increasing channel and toward the air outlet of the inflation channel. Directional flow, it can be understood that after the airflow surrounding the flow-increasing channel continues to converge in front of the air outlet of the flow-increasing channel and flows forward, the air at the air outlet of the flow-increasing channel can continue to flow forward together, so that the air in the flow-increasing channel can be brought out together, so that a negative pressure is formed inside the flow-increasing channel, and under the action of the air pressure difference, the air from the external environment can automatically enter the flow-increasing channel and continue to enter the inflation channel through the flow-increasing channel, and be transported forward to the inner cavity of the inflatable product together with the airflow in the inflation channel. In this way, the external air can naturally enter the interior of the inflatable product during the process of the air pump inflating the inflatable product, effectively increasing the air intake during the inflation process, thereby shortening the inflation time of the inflatable product by the air pump, and the inflation efficiency is higher, and the energy consumption of the air pump will not be increased extra. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required to be used in the embodiments or the description of the prior art are briefly introduced below.

[0017] Figure 1 is a three-dimensional diagram of an air pump of the present invention;

[0018] Figure 2 is a three-dimensional diagram of the air extraction module of the present invention;

[0019] Figure 3 is a diagram showing the internal structure of the air extraction module of the present invention;

[0020] Figure 4 It is the internal structure diagram of the air pump of the present invention;

[0021] Figure 5 yes Figure 4 A partial enlarged view of

[0022] Figure 6 It is the internal structure diagram of the flow increasing box of the present invention (the manifold is not cut open);

[0023] Figure 7It is a side view of the flow guide structure of the present invention;

[0024] Figure 8 It is a side view of the manifold of the present invention;

[0025] Fig. 9 1 is a diagram showing the internal structure of the flow increasing box of the present invention (with a limit plate added);

[0026] Fig.10 It is a structural diagram of the installation box of the present invention;

[0027] Fig.11 It is a structural diagram of the installation box of the present invention;

[0028] Fig.12 It is an assembly diagram of the air suction module in the present invention being inserted into the interior of the installation box in a first posture (for inflating an inflatable product);

[0029] Fig.13 It is an assembly diagram of the air suction module in the second posture inserted into the installation box in the present invention (for deflating the inflatable product);

[0030] Fig.14 It is a schematic structural diagram of an optional embodiment of the present invention.

[0031] Reference numerals:

[0032] 1. Air pump body;

[0033] 2. Inflatable channel, 21. First one-way valve, 22. Manifold, 221. Straight extension pipe, 222. Gradually expanding pipe, 223. Stop plate, 23. Annular pressurizing 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. tapered pipe;

[0036] 5. Installation box, 51. Main air pipe, 52. Secondary air pipe;

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

[0038] 100, air duct box, 101, blower, 102, handle, 103, support foot, 104, reinforcement 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 DESCRIPTION

[0040] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings.

[0041] Embodiment 1

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

[0043] It can be understood that the air pump of this embodiment is provided with an air duct box 100 which is provided with a flow-increasing channel 3 and the air-increasing channel 2 in addition to the air flow conveying structure used for connecting with the air pump body 1 and inputting air to the inflatable product. The air inlet of the flow-increasing channel 3 is used to connect to the outside of the air pump, and the air outlet of the flow-increasing channel 3 is connected to the air-increasing channel 2, so that natural air from the external environment can enter the air-increasing channel 2 through the flow-increasing channel 3. In addition, a guide structure 4 is provided at the connection between the flow-increasing channel 3 and the air-increasing channel 2. In the process that the air pump body 1 conveys the inflatable airflow to the inflatable product through the air-increasing channel 2, the guide structure 4 guides the airflow entering the air-increasing channel 2 from the air pump body 1 to surround the air outlet of the flow-increasing channel 3 and converge to the front of the air outlet of the flow-increasing channel 3 and flow toward the air outlet of the air-increasing channel 2. It can be understood that after the airflow surrounding the flow-increasing channel 3 continues to converge in front of the air outlet of the flow-increasing channel 3 and flows forward, the air at the air outlet of the flow-increasing channel 3 can continue to flow forward together, so that the air in the flow-increasing channel 3 can be brought out together, so that a negative pressure is formed inside the flow-increasing channel 3. Under the action of the air pressure difference, the air in the external environment can automatically enter the flow-increasing channel 3 and continue to enter the inflation channel 2 through the flow-increasing channel 3, and be transported forward to the inner cavity of the inflatable product together with the airflow in the inflation channel 2. In this way, the air pump can naturally bring external air into the interior of the inflatable product during the process of inflating the inflatable product, effectively increasing the air intake during the inflation process, thereby shortening the inflation time of the inflatable product by the air pump, and the inflation efficiency is higher, and the energy consumption of the air pump will not be increased.

[0044] In one embodiment, further, a first one-way valve 21 is installed at the air inlet of the inflation channel 2, and a second one-way valve 31 is installed at the air inlet of the flow-increasing channel 3. The first one-way valve 21 is connected to the airflow output end of the air pump body 1 upward, and the first one-way valve 21 can be opened one-way to the inside of the inflation channel 2 after being pushed downward by the airflow from above, and the second one-way valve 31 can be opened one-way to the inside of the flow-increasing channel 3 after the pressure difference is formed between the upper and lower sides and can be pushed downward by the external air pressure from above. In addition, the first one-way valve 21 and the second one-way valve 31 are respectively provided with elastic members, and the first one-way valve 21 and the second one-way valve 31 are respectively driven to reset and close by each elastic member.

[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 is started and a downward airflow is input 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 pump airflow, so that the inflation channel 2 can be conveniently opened automatically during inflation, without the need to add an additional electrical control structure, and the operation is simpler and more convenient. As the inflation airflow of the air pump body 1 continues to enter the inflation channel 2 and continues to flow forward together with the air in the flow-increasing channel 3 under the guiding effect of the guide structure 4, as the flow-increasing channel 3 is opened, the inflation channel 2 is opened automatically. The internal air pressure is reduced and negative pressure is formed. Under the action of the air pressure difference, the air from the external environment can automatically push down the second one-way valve 31 in the air inlet of the flow-increasing channel 3 and naturally replenish the flow-increasing channel 3, so that the air in the inflation channel 2 can be conveniently and automatically replenished during inflation. There is no need to add an additional electronic control structure, and the operation is simpler and more convenient. In this inflation stage, the external natural air intake and the active air supply of the air pump body 1 can be used to inflate the inflatable product together, and more air can be effectively input into the inflatable product that has not yet been obviously inflated in the initial stage of inflation, thereby effectively improving the inflation efficiency. However, also 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 level, the airflow entering the inflation channel 2 from the air pump body 1 will be blocked by the internal air pressure of the inflatable product, making it difficult to continue to effectively carry the air in the flow-increasing channel 3 forward. There may even be a part of the airflow that reversely enters the flow-increasing channel 3 through the air outlet of the flow-increasing channel 3, causing the pressure difference between the internal air pressure of the flow-increasing channel 3 and the air pressure of the external environment to decrease, and there may even be a situation where the internal air pressure of the flow-increasing channel 3 is 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. At this stage, the inflatable product has been significantly inflated and the internal pressure has increased. After the second one-way valve 31 is automatically closed, it can be ensured that the airflow entering the inflation channel 2 from the air pump body 1 will not be depressurized, and it can be ensured that the inflatable product can continue to be inflated through the air outlet of the inflation channel 2 until the air pressure of the inflatable product reaches a preset level. Finally, when the inflation is completed and the output airflow of the air pump body 1 is stopped, the elastic member can drive the first one-way valve 21 to close automatically. 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 increase channel 3, thereby maintaining the internal air pressure of the inflatable product.

[0046] In one embodiment, specifically, the flow guide structure 4 includes a partition plate 41 and a tapered tube 42. The inflation channel 2 and the flow increasing channel 3 are sealed and separated by the partition plate 41, and the tapered tube 42 runs through the partition plate 41. The air outlet of the flow increasing channel 3 is arranged at the pipe mouth of the tapered tube 42, so that the flow increasing channel 3 can be connected to the inflation channel 2 forward through the tapered tube 42. In addition, the pipe mouth of the tapered tube 42 gradually tilts and narrows and extends forward to the interior of the inflation channel 2. It can be understood that since the inflation channel 2 and the flow-increasing channel 3 are sealed and separated by the partition plate 41, it can be ensured that the air inside the flow-increasing channel 3 can only enter the inflation channel 2 through the tapered tube 42. Since the pipe mouth of the tapered tube 42 is gradually inclined and narrowed and extends forward to the interior of the inflation channel 2, the annular inclined surface of the outer wall of the tapered tube 42 can be used to effectively guide the airflow entering the inflation channel 2 from the air pump body 1 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. While smoothly guiding the airflow to flow in the direction of the air outlet of the inflation channel 2, the air at the air outlet of the flow-increasing channel 3 flows forward, and finally a negative pressure state can be smoothly achieved inside the flow-increasing channel 3 and external air can be guided to naturally replenish the flow-increasing channel 3.

[0047] In one embodiment, specifically, a laterally extending manifold 22 is fixed at the central position inside the inflation channel 2, and an annular boost 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 boost chamber 23, so the output airflow of the air pump body 1 will first enter the annular boost chamber 23, and the pipe mouth of the taper 42 extends forward into the manifold 22, and there is a certain gap between the outer wall of the taper 42 and the inner wall of the manifold 22 to form an annular air duct 24, which is connected to the inner cavity of the manifold 22 forward, and an annular gap 25 is formed between the port at the rear end of the manifold 22 and the partition plate 41, and the annular gap 25 surrounds the outer periphery of the taper 42, wherein the annular boost chamber 23 is connected to the annular air duct 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 boost chamber 23, and then enter the annular air duct 24 through the annular gap 25. At this time, since the space of the annular gap 25 is much smaller than the annular boost chamber 23, the internal air pressure of the annular boost chamber 23 is relatively high, and then the flow rate of the airflow inside the annular boost chamber 23 will increase significantly when it is output from the annular gap 25, forming a high-speed airflow. After the high-speed airflow is guided by the outer wall of the tapered tube 42 in the annular air duct 24 and converges to the front of the air outlet of the flow-increasing channel (3), it can more efficiently bring the air at the air outlet of the flow-increasing channel 3 to flow forward, accelerate the air inside the flow-increasing channel 3 to flow forward, and finally accelerate the external natural air intake to replenish the flow-increasing channel 3, further improving the air pump's inflation efficiency for inflatable products. It should also be noted that since the annular boost chamber 23, the annular gap 25 and the annular air duct 24 are all annular, it is possible to more effectively guide the airflow around the air outlet of the flow-increasing channel 3.

[0048] In one embodiment, specifically, the manifold 22 is composed of a straight tube 221 and a gradually expanding tube 222. In this embodiment, the straight tube 221 and the gradually expanding tube 222 are butted against each other front and back, that is, the gradually expanding tube 222 is butted against the straight tube 221 forward, and the straight tube 221 extends toward the air outlet of the inflation channel 2, and the annular gap 25 is between the pipe opening at the rear end of the gradually expanding tube 222 and the partition plate 41, the outer wall of the gradually expanding tube 222 is inclined toward the inside of the annular boost chamber 23, and the inner wall of the gradually expanding tube 222 surrounds the outer circumference of the gradually contracting tube 42 and is parallel to the inclined outer wall of the gradually contracting tube 42. It can be understood that in the above structure, since the outer wall of the gradually expanding tube 222 is inclined toward the inside of the annular boost chamber 23, it can hinder the airflow in the annular boost chamber 23, thereby facilitating further increasing the internal air pressure of the annular boost chamber 23. Since the inner wall of the divergent tube 222 surrounds the outer circumference of the convergent tube 42 and is parallel to the inclined outer wall of the convergent tube 42, the inner wall of the annular air duct 24 can form a smoothly inclined guide surface, which can more effectively guide the airflow output from the annular boost chamber 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 tube 221, and the mouth of the tapered tube 42 extends forward into the straight tube 221, and the mouth of the tapered tube 42 abuts against the limiting plate 223 forward. It can be understood that under the limiting effect of the limiting plate 223, the mouth of the tapered tube 42 can be ensured to accurately enter the straight tube 221 forward during assembly. The structure in which the mouth of the tapered tube 42 extends forward into the straight tube 221 can more effectively ensure that the airflow output from the air pump body 1 can only converge in the straight tube 221 to the front of the air outlet of the flow-increasing channel 3, so that the airflow can flow forward stably in the straight tube 221.

[0050] In one embodiment, specifically, the air pump body 1 includes a mounting box 5 and an air suction module 6, and a main air pipe 51 and a secondary air pipe 52 are integrally formed on the mounting box 5. 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. A blower 101 is installed inside the air suction module 6, and an air jet 61 and an air suction nozzle 62 are arranged outside the air suction module 6. The air outlet end on the side of the blower 101 corresponds to the air jet 61, and the air suction end at the center of the blower 101 is connected to the air suction nozzle 62 inside the blower 101. Therefore, when the blower 101 inside the air suction module 6 is running, the external air can be sucked through the air suction nozzle 62, and the air flow can be ejected outward through the air jet 61. On the other hand, when the air suction module 6 is in the first posture in the installation box 5, the air nozzle 61 and the main air pipe 51 are connected to each other, and when the air suction module 6 is in the second posture in the installation box 5, the air suction nozzle 62 and the auxiliary air pipe 52 are connected to each other. More specifically, the air nozzle 61 and the air suction nozzle 62 are distributed on the upper and lower sides of the air suction module 6 and are staggered in the front and rear positions. The air suction module 6 is detachably inserted into the inner cavity of the installation box 5, and the air suction module 6 switches between the first posture and the second posture in the installation box 5 through different insertion directions. When the air suction module 6 is inserted into the installation box 5 in the first posture, the air nozzle 61 is connected to the main air pipe 51 of the installation box 5 internally, and the air suction nozzle 62 is connected to the external environment of the installation box 5 externally. When the air suction module 6 is inserted into the installation box 5 in the second posture, the air suction nozzle 62 is connected to the auxiliary air pipe 52 of the installation box 5 internally, and the air nozzle 61 is connected to the external environment of the installation box 5 externally. That is to say, when the inflatable product needs to be inflated, the air suction module 6 is inserted downward into the installation box 5 in a first posture. In the first posture, the air nozzle 61 of the air suction module 6 faces downward and is connected to the main air pipe 51 of the installation box 5 downward, while the air suction nozzle 62 faces upward and is connected to the external environment of the installation box 5. Therefore, the air suction module 6 can smoothly draw in external air through the air suction nozzle 62, and smoothly inflate the main air pipe 51 of the installation box 5 and the inflation channel 2 in the air duct box 100 through the air nozzle 61, thereby performing the inflation work of the inflatable product. On the contrary, when it is necessary to deflate the inflatable product, the direction in which the suction module 6 is inserted into the installation box 5 is changed, and the suction module 6 is inserted downward into the installation box 5 in the second posture. In the second posture, the suction nozzle 62 of the suction module 6 faces downward and is connected to the auxiliary air pipe 52 of the installation box 5 downward, while the air nozzle 61 faces upward and is connected to the external environment of the installation box 5. Therefore, the suction module 6 can smoothly suck the internal air of the flow-increasing channel 3 in the air duct box 100 through the suction nozzle 62, and then continue to extract the internal air of the inflation channel 2 and the inflatable product through the flow-increasing channel 3, so as to achieve the deflation of the inflatable product, and the extracted gas can be discharged to the outside through the air nozzle 61. The above structure can conveniently switch the inflation function and deflation function of the air pump.

[0051] Preferably, the second one-way valve 31 is connected to an elastic push rod 34 extending vertically toward the direction of the suction module 6, and a push plate 63 is fixed to the inner cavity of the suction nozzle 62 of the suction module 6. When the suction module 6 is in the second posture in the installation box 5, the push plate 63 is inserted into the auxiliary air pipe 52 along with the suction nozzle 62, and the push plate 63 pushes the elastic push rod 34 downward, thereby opening the second one-way valve 31, ensuring that in the second posture, the suction nozzle 62 of the suction module 6 can remain connected to the flow increasing channel 3, and finally ensuring that the suction nozzle 62 of the suction module 6 can maintain the air in the flow increasing channel 3 and the inflation channel 2 inside the suction duct box 100, thereby realizing the deflation of the inflatable product.

[0052] Optionally, in order to facilitate the removal of the air suction module 6 from the installation box 5, the outer walls on the upper and lower sides of the air suction module 6 are respectively pivoted with a turn handle 102, and the two turn handles 102 are respectively folded on the outer walls of the air suction module 6. When the air suction module 6 needs to be removed, the user can manually pull out the air suction module 6 in the installation box 5 by simply turning the turn handle 102 to open it, so that when the inflation function and the deflation function of the air pump need to be switched, the air suction module 6 in the installation box 5 can be conveniently and quickly pulled out by the turn handle 102.

[0053] In one embodiment, when the air suction module 6 is in the first posture in the installation box 5 (i.e., when the inflatable product needs to be inflated), a first flow-increasing gap 32 is reserved between the side of the air suction module 6 on which the air nozzle 61 is provided 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 second flow-increasing gap 33 extending vertically is reserved between the outer wall of the air suction module 6 and the inner wall of the installation box 5, and 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, a flip cover 105 is hinged on one side of the installation box 5, and an elastic buckle (not marked in the figure) is integrally formed on the flip cover 105. After the flip cover 105 is turned to open, the suction module 6 can be inserted into the interior of the installation box 5. After the box opening of the installation box 5 is closed by the flip cover 105 and the elastic buckle is fastened to the installation box 5, the suction module 6 can be fixedly stored in the installation box 5.

[0055] Specifically, in order to ensure that the first flow-increasing gap 32 and the second flow-increasing gap 33 can be smoothly reserved after the air suction module 6 is inserted into the installation box 5 in the first posture, a plurality of supporting feet 103 are fixed on one side of the air nozzle 61 on the air suction module 6. The supporting feet 103 can ensure that a limit is formed between the air suction module 6 and the installation box 5 in the vertical direction, thereby smoothly reserving the first flow-increasing gap 32. At the same time, the inner side wall of the installation box 5 is integrally formed with a plurality of vertically extending reinforcing ribs 104. The reinforcing ribs 104 can not only enhance the strength of the installation box 5, but also ensure that the second flow-increasing gap 33 is smoothly reserved between the air suction module 6 and the installation box 5 in the horizontal direction.

[0056] Embodiment 2

[0057] This embodiment is a further optional solution of the above embodiment 1. In order to ensure that when the user uses the air pump device in a high altitude area with low atmospheric pressure, the air pump device of the present invention can also maintain the inflation efficiency of the inflatable product. Fig.14 As shown, the manifold 22 is movably installed in the inflation channel 2, and a telescopic mechanism 200 is also installed in the inflation channel 2. The telescopic mechanism 200 is transmission-connected to the manifold 22 and can drive the manifold 22 to move laterally. The telescopic mechanism 200 drives the manifold 22 to move laterally to adjust the size of the annular gap 25 between the manifold 22 and the partition plate 41. In addition, a first air pressure sensor 201, a wind speed sensor 203, and an air density sensor 204 are installed inside the air duct box 100. Specifically, the first air pressure sensor 201 is located in the annular boost chamber 23 so that the control system of the air pump can monitor the air pressure in the annular boost chamber 23, and 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 inside 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, a second air pressure sensor 202 is installed outside the air duct box 100 to facilitate the control system of the air pump to monitor the external atmospheric pressure. During operation, the control system of the air pump device monitors the air pressure P in the annular boost chamber 23 through the first air pressure sensor 201 and the second air pressure sensor 202 respectively. B and the external atmospheric pressure P A At the same time, the control system monitors the air flow velocity v inside the manifold 22 through the wind speed sensor 203 d , and the current air density ρ is monitored by the air density sensor 204, and according to the formula Determine the target area size S to which the annular gap 25 needs to be adjusted e , the control system is based on the target area size S eThe telescopic mechanism 200 is controlled to drive the manifold 22 to move horizontally, and the size of the annular gap 25 is adjusted so that the annular gap 25 inside the air duct box 100 is adjusted to the target area size S e , so as to flexibly adjust the internal structure of the air duct box 100 in a targeted manner according to the changes in the external atmospheric pressure.

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

[0059] It should be noted that the above formula is derived and designed based on the principles of fluid mechanics. According to the principles of fluid mechanics, according to the formula The air flow Q value from the annular boost chamber 23 through the annular gap 25 is obtained. Since the cross-sectional area S of the manifold 22 is d is constant, so the flow rate Q of the airflow through the annular gap 25 is equal to the flow rate of the airflow through the manifold 22, and the mathematical relationship is derived from this Finally, the formula is converted

[0060] In actual application, when the user uses the air pump device in a high altitude area with low atmospheric pressure, the driving force of the air from the external environment to enter the flow-increasing channel 3 is weakened, thereby reducing the amount of air entering the flow-increasing channel 3 per unit time, and further resulting in a significant reduction in the input amount of the external environment air that is transported forward to the inner cavity of the inflatable product together with the airflow in the inflation channel 2 per unit time. Finally, the inflation efficiency of the inflatable product by the air pump device of the present invention is reduced, resulting in a prolonged inflation time. In this case, the air pressure P of the annular booster chamber 23 measured by the system of the air pump device is B The external atmospheric pressure P A The difference ΔP between them will increase, that is, assuming that the air pressure P of the annular boost chamber 23 B The external atmospheric pressure P A As the altitude increases, ΔP will increase. At this time, the control system of the air pump device can calculate the target area size S of the annular gap 25 according to the currently measured pressure difference ΔP through the solution of this embodiment. e The telescopic mechanism 200 is then controlled to drive the manifold 22 to move horizontally, and the size of the annular gap 25 is adjusted, so that the annular gap 25 inside the air duct box 100 is adjusted to the target area size S e, so as to increase the flow rate of the airflow output from the annular gap 25 at the front end of the pipe mouth of the reducer 42, enhance the driving effect of the airflow output from the annular gap 25 on the air inside the reducer 42 and the flow-increasing channel 3, accelerate the speed of the air pressure drop inside the flow-increasing channel 3, and allow the air from the external environment to enter the flow-increasing channel 3 faster, ensuring that the air pump device can maintain the inflation efficiency of the inflatable product in high-altitude areas with low atmospheric pressure.

[0061] Assumptions:

[0062] The pressure difference ΔP measured by the system is 1000Pa;

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

[0064] Flow coefficient C d =0.8;

[0065] The air density of the current environment measured by the air density sensor 204 is ρ=1.2 kg / m 3 ;

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

[0067] Calculate the target area size S to which the annular gap 25 needs to be adjusted according to formula 1 e :

[0068]

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

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Simple modification or equivalent replacement of the various technical features of this embodiment are within the protection scope of the present invention.

Claims

1. A flow-increasing air pump with natural air intake, comprising an air pump body (1), wherein a fan (101) is arranged inside the air 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-increasing channel (3); the air inlet of the inflation channel (2) is used to receive the output airflow of the air pump body (1), the air outlet of the inflation channel (2) is used to receive the inner cavity of the inflation product, the air inlet of the flow-increasing channel (3) is used to connect to the outside of the air pump to receive the external ambient air, and the air outlet of the flow-increasing channel (3) is connected to the inflation channel (2); a flow-guiding structure (4) is provided at the connection point between the flow-increasing channel (3) and the inflation channel (2); the airflow entering the inflation channel (2) from the air pump body (1) is guided by the flow-guiding structure (4) 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) and flow in the direction of the air outlet of the inflation channel (2).

2. The flow-increasing 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-increasing channel (3) is provided with a second one-way valve (31); the first one-way valve (21) is connected to the air flow output end of the air pump body (1) and is suitable for being pushed by the air flow to open in one direction toward the inside of the inflation channel (2); after a pressure difference is formed on the opposite sides of the second one-way valve (31), it is suitable for being pushed by the external air pressure and opening in one direction toward the inside of the flow-increasing channel (3); the first one-way valve (21) and the second one-way valve (31) are respectively provided with elastic parts, and the first one-way valve (21) and the second one-way valve (31) are respectively driven to reset and close by the respective elastic parts.

3. The flow-increasing air pump with natural air intake according to claim 1, characterized in that: The flow-guiding structure (4) comprises a partition plate (41) and a tapered tube (42) penetrating the partition plate (41); the inflation 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 arranged at the pipe mouth of the tapered tube (42), and the pipe mouth of the tapered tube (42) is gradually inclined and narrowed and extends to the interior of the inflation channel (2).

4. The flow-increasing air pump with natural air intake according to claim 3, characterized in that: A manifold (22) is provided in the inflation channel (2); An annular boost chamber (23) is formed between the outer wall of the confluence pipe (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 boost chamber (23); the pipe mouth of the reducer (42) extends into the confluence pipe (22), and a certain gap is formed between the outer wall of the reducer (42) and the inner wall of the confluence pipe (22) to form an annular air duct (24); an annular gap (25) surrounding the outer circumference of the reducer (42) is formed between one end of the confluence pipe (22) and the partition plate (41); the annular boost chamber (23) is connected to the annular air duct (24) through the annular gap (25).

5. The flow-increasing air pump with natural air intake according to claim 4, characterized in that: The manifold (22) is composed of a straight tube (221) and a gradually expanding tube (222) that are connected to each other; the straight tube (221) extends toward the air outlet of the inflation channel (2); the annular gap (25) is between the tube mouth of the gradually expanding tube (222) and the partition plate (41); the outer wall of the gradually expanding tube (222) is inclined toward the inside of the annular boost chamber (23); the inner wall of the gradually expanding tube (222) surrounds the outer circumference of the gradually converging tube (42) and is parallel to the inclined outer wall of the gradually converging tube (42).

6. The flow-increasing air pump with natural air intake according to claim 5, characterized in that: A limiting plate (223) is arranged inside the straight extension tube (221), and the pipe opening of the tapered tube (42) extends into the straight extension tube (221) and abuts against the limiting plate (223).

7. The flow-increasing air pump with natural air intake according to claim 2, characterized in that: The air pump body (1) comprises a mounting box (5) and an air suction module (6); a main air pipe (51) and a secondary air pipe (52) are arranged on the mounting box (5); an air inlet of the inflation channel (2) and an air inlet of the flow-increasing channel (3) are arranged in the main air pipe (51) and the secondary air pipe (52), respectively; the air suction module (6) comprises an air jet nozzle (61) and an air suction nozzle (62); when the air suction module (6) is in a first posture in the mounting box (5), the air jet nozzle (61) and the main air pipe (51) are connected to each other; when the air suction module (6) is in a second posture in the mounting box (5), the air suction nozzle (62) and the secondary air pipe (52) are connected to each other.

8. The flow-increasing air pump with natural air intake according to claim 7, characterized in that: The air nozzle (61) and the air extraction nozzle (62) are distributed on opposite sides of the air suction module (6) and are staggered with each other; the air suction module (6) is detachably inserted into the inner cavity of the installation box (5), and the air suction module (6) switches between a first posture and a second posture in the installation box (5) through different insertion directions; when the air suction module (6) is inserted into the installation box (5) in the first posture, the air nozzle (61) is internally connected to the main air pipe (51) of the installation box (5), and the air extraction nozzle (62) is externally connected to the external environment of the installation box (5); when the air suction module (6) is inserted into the installation box (5) in the second posture, the air suction module (6) is internally connected to the main air pipe (51) of the installation box (5), and the air extraction nozzle (62) is externally connected to the external environment of the installation box (5); 5), the suction nozzle (62) is internally connected to the auxiliary air pipe (52) of the installation box (5), and the air nozzle (61) is externally connected to the external environment of the installation box (5); the second one-way valve (31) is connected to an elastic push rod (34) extending in the direction of the suction module (6); the inner cavity of 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 in the installation 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).

9. The flow-increasing air pump with natural air intake according to claim 7, characterized in that: When the air suction module (6) is in a first posture in the installation box (5), a first flow-increasing gap (32) is reserved between one side of the air suction module (6) on which the air nozzle (61) is provided and the bottom wall of the installation 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 wall of the air suction module (6) and the inner wall of the installation box (5); one 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 other end of the second flow-increasing gap (33) is connected to the first flow-increasing gap (32).

10. The booster air pump with natural air intake according to claim 8, characterized in that: The side of the air suction module (6) provided with the air nozzle (61) and the side of the air suction nozzle (62) are respectively pivotally connected to a turning handle (102), and each turning handle (102) is folded onto the outer wall of the air suction module (6).

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