TWI786371B - Fluid conveying device and its housing - Google Patents

Abstract

The present invention relates to a fluid conveying device and its casing. The fluid conveying device includes: a casing and a fluid driving part. The shell has a first shell, a second shell and several limiting pieces. The first casing and the second casing are matched in a relative joining direction, and the plurality of restricting pieces are clamped respectively on the peripheries of the combined first casing and the second casing. The fluid driving part has a motor and at least one fan wheel, the motor and the at least one fan wheel are arranged in the first casing and the second casing, and the motor is used to drive the at least one fan wheel to rotate. Therefore, the fluid delivery device of the present invention can improve the convenience of assembly and improve the product yield. Moreover, the sealing and waterproof effect of the casing can be improved.

Description

Fluid conveying device and its housing

The invention relates to a fluid conveying device and its casing.

Conventional fluid conveying devices are common such as water pumps, etc., which mainly control fluid circulation such as cooling water, and are used to dissipate heat from various products on the market that tend to generate high temperatures during operation.

In addition, the components of conventional water pumps include many structurally complex components such as housings, motors, shaft cores, water blades, shaft seals, and hubs. The shell of Zhishui pump is assembled with screws, if improper force is applied, the shell may break. In addition, it may only result in a better sealing and waterproof effect at the screw-locked part, causing the problem of water leakage at other non-screw-locked parts. Therefore, there is still a need for improvement.

The present invention provides a fluid delivery device. In one embodiment, the fluid delivery device includes: a housing and a fluid driving element. The shell has a first shell, a second shell and several limiting pieces. The first casing and the second casing are matched in a relative joining direction, and the plurality of restricting pieces are clamped respectively on the peripheries of the combined first casing and the second casing. The fluid driving part has a motor and at least one fan wheel, the motor and the at least one fan wheel are arranged in the first casing and the second casing, and the motor is used to drive the at least one fan wheel to rotate.

The present invention provides a housing for a fluid delivery device. In one embodiment, the housing for the fluid delivery device includes: a first housing, a second housing and several restricting pieces. The first casing has a periphery. The second casing has a periphery, and the first casing and the second casing are matched in a relative joining direction. The plurality of restricting pieces are clamped respectively on the peripheries of the first shell and the second shell after they are combined.

The fluid conveying device of the present invention utilizes the plurality of restricting pieces to be clamped to the periphery of the first casing and the second casing after they are combined to assemble the first casing and the second casing, which can improve the convenience of assembly performance, and will not cause the first casing or the second casing to break due to improper force application, so as to improve product yield. Moreover, the sealing and waterproof effect of the casing can be improved by utilizing the several restricting pieces.

1: Fluid delivery device

10: shell

11: The first shell

12: Second shell

13,14: Restricted parts

15:Accommodating space

16: The first conveying department

17: The second conveying part

18: sealing ring

20: Fluid driver

21: The first round

22: The second fan wheel

23: motor

33,34: Restricted parts

43,44: Restrictions

51,52,53,54: Restricted parts

110: Perimeter of the first casing

111: the first extension

112,113,114,115: arc section

116,117: straight section (first straight section)

118,119: straight section (second straight section)

120: Perimeter of the second casing

121: second extension

122,123,124,125: arc section

126,127: straight section (the third straight section)

128,129: straight section (fourth straight section)

131,132: Arc

133: straight part

134:Accommodating Department

141,142: Arc

143: straight part

144:Accommodating Department

151: The first chamber

152: The second chamber

153: The third chamber

333: straight part

334: first side

335: second side

336: Third side

337:Accommodating Department

343: straight part

431,432: Arc

433: straight part

441,442: Arc

443: straight part

511,521,531,541: arc

D: Relative joining direction

F1: The first positioning department

F2: The second positioning unit

P: positioning bump

S: positioning groove

X: Axial

Fig. 1 shows a three-dimensional appearance view of a fluid delivery device according to an embodiment of the present invention; Fig. 2A shows a three-dimensional exploded view of a fluid delivery device according to an embodiment of the present invention; Fig. 2B shows the front of a second housing of a fluid delivery device according to an embodiment of the present invention Schematic diagram; FIG. 3 shows a three-dimensional exploded view when the restricting member of the fluid delivery device according to an embodiment of the present invention is separated from the combined first and second housings; FIG. 4 shows the fluid delivery device according to an embodiment of the present invention The three-dimensional exploded view of the limiting member and the mated first housing and the second housing when they are separated; and FIG. 5 shows the restricting member and the mated first housing and the second housing of an embodiment of the present invention The three-dimensional exploded view of the shell when it is separated.

FIG. 1 shows a three-dimensional appearance view of a fluid delivery device according to an embodiment of the present invention. FIG. 2A shows an exploded perspective view of a fluid delivery device according to an embodiment of the present invention. FIG. 2B shows a schematic front view of the second housing of the fluid delivery device according to an embodiment of the present invention. Cooperate with Fig. 1, Fig. 2A and Fig. 2B, the fluid delivery device 1 of the present invention includes a housing 10 and a fluid driving member 20 . The fluid delivery device 1 of the present invention can be used to drive fluid circulation such as liquid (for example: water or non-conductive liquid, etc.) or gas, for example: the fluid delivery device 1 of the present invention can be applied to such as water pumps, etc., but not limited to the above .

In one embodiment, the housing 10 of the fluid delivery device 1 of the present invention has a first housing 11 , a second housing 12 and several limiting pieces 13 , 14 . The first casing 11 has a periphery 110 . The second housing 12 has a periphery 120, the first housing 11 and the second housing 12 are aligned in a relative joining direction D, and the first housing 11 and the second housing 12 are aligned along an axis Split to X. The plurality of limiting parts 13, 14 are clamped respectively on the periphery of the first housing 11 and the second housing 12 after they are combined, that is, after the first housing 11 and the second housing 12 are combined, , the plurality of restricting pieces 13, 14 are clamped to the peripheries of the coupled first casing 11 and the second casing 12 respectively. In one embodiment, the limiting members 13 and 14 are tightly fitted and clamped to the peripheries of the first housing 11 and the second housing 12 after they are mated.

In one embodiment, the first housing 11 has a first extension 111 disposed on the periphery 110 of the first housing 11, and the second housing 12 has a second extension 121 disposed on the first The periphery 120 of the two shells. In one embodiment, the first extension part 111 and the second extension part 121 can be respectively arranged around the periphery of the first casing 11 and the second casing 12 . In one embodiment, the first extension portion 111 and the second extension portion 121 can be arranged in a ring shape on the periphery of the first casing 11 and the second casing 12 respectively, or the first extension portion 111 And the second extension portion 121 can be discontinuously disposed on the periphery of the first casing 11 and the second casing 12 respectively. The plurality of restricting pieces 13 and 14 respectively clamp the mated first extension portion 111 and the second extension portion 121 . In one embodiment, the plurality of restricting pieces 13 and 14 are tightly fitted and clamped to the coupled first extension portion 111 and the second extension portion 121 .

In one embodiment, the first extension portion 111 includes several arc sections 112, 113, 114, 115 and several straight sections 116, 117, 118, 119, and the several arc sections 112, 113 , 114, 115 and the several straight sections 116, 117, 118, 119 are arranged at intervals. The second extension 121 includes several arc sections 122, 123, 124, 125 and several straight sections 126, 127, 128, 129, the several arc sections 122, 123, 124, 125 and the Several straight sections 126, 127, 128, 129 are spaced apart.

In one embodiment, the plurality of restricting members include two restricting members 13, 14, the restricting member 13 includes two arc portions 131, 132 and a straight portion 133, wherein the two arc portions 131, 132 of the restricting member 13 correspond to clamp The several arc-shaped sections 112, 113 of the first extension 111 and the several arc-shaped sections 122, 123 of the second extension 121 that have been aligned, the straight portion 133 of the restricting member 13 is clamped correspondingly The straight section 116 of the first extension part 111 and the straight section 126 of the second extension part 121 have been mated. The restriction member 14 includes two arc portions 141, 142 and a straight portion 143, wherein the two arc portions 141, 142 of the restriction member 14 correspond to the several arc sections 114 of the first extension portion 111 that have been mated. . The straight section 127 of the two extensions 121 . In one embodiment, the plurality of restricting pieces 13 and 14 are tightly fitted and clamped to the above-mentioned section of the first extension part 111 and the above-mentioned section of the second extension part 121 respectively.

In one embodiment, a sealing ring 18 is disposed between the first extension portion 111 and the second extension portion 121 of the first casing 11 and the second casing 12 . The sealing ring 18 is waterproof rubber or waterproof silicone. The sealing ring 18 can provide a better sealing effect after the first shell 11 and the second shell 12 are combined, so as to prevent the liquid or gas in the fluid delivery device 1 from leaking.

In one embodiment, because the sealing ring 18 is elastic, when assembling the limiting members 13, 14, the assembler can press the first casing 11 and the second casing 12 first, so that The thickness of the sealing ring 18 is reduced under pressure, so that the combined thickness of the first housing 11, the sealing ring 18 and the second housing 12 is reduced, so that the several restricting members 13, 14 are sleeved respectively. In the aforementioned section of the first extension portion 111 and the aforementioned section of the second extension portion 121 . Moreover, after the several limiting pieces 13, 14 are sleeved respectively, the force applied by the assembler is eliminated, and the thickness of the sealing ring 18 recovers without pressure, so that the several limiting pieces 13, 14 and the first extension portion 111 The degree of tight fit between the above-mentioned section and the above-mentioned section of the second extension portion 121 is improved, so as to enhance the sealing and waterproof effect of the casing 10 .

In one embodiment, at least one of the first extension portion 111 or the second extension portion 121 further includes a positioning protrusion P, and at least one of the plurality of limiting members 13, 14 further includes a positioning groove S , set at the corresponding position of the positioning protrusion P to accommodate the positioning protrusion P. In one embodiment, the positioning protrusion P is disposed on the straight section 126 of the second extension portion 121, and the positioning groove S is disposed on the straight portion 133 of the limiting member 13, corresponding to the positioning protrusion. The corresponding position of P is for accommodating the positioning protrusion P, which provides a better positioning effect and further prevents the limiting member 13 from falling off.

In one embodiment, the first extension portion 111 or the second extension portion 121 has a peripheral length, and the plurality of restriction members 13, 14 has a total length, which is the individual of the plurality of restriction members 13, 14. The sum of the lengths, for example: the individual lengths of the limiting member 13 are the sum of the lengths of the two arc portions 131, 132 and the length of the straight portion 133, and the total length is 70% or more than 70% of the peripheral length. Therefore, the plurality of restricting pieces 13 and 14 can sandwich most sections of the first extension part 111 and the second extension part 121 to improve the sealing and waterproof effect.

In one embodiment, each of the restricting pieces includes a receiving portion for receiving the coupled first extension portion and the second extension portion. The limiting member 13 includes a receiving portion 134 having a receiving space for receiving the coupled first extension portion 111 and the second extension portion 121 . the limit The member 14 includes a receiving portion 144 for receiving the coupled first extension portion 111 and the second extension portion 121 .

In one embodiment, the fluid driver 20 has a motor 23 and at least one fan wheel 21, 22, the motor 23 and the at least one fan wheel 21, 22 are arranged in the first housing 11 and the second housing 12, the motor 23 is used to drive the at least one fan wheel 21, 22 to rotate. In one embodiment, the casing 10 further includes an accommodating space 15 for accommodating the at least one fan wheel 21 , 22 and the motor 23 . In one embodiment, the at least one fan wheel 21 , 22 includes a first fan wheel 21 and a second fan wheel 22 , and the first fan wheel 21 and the second fan wheel 22 are connected.

In one embodiment, the accommodating space 15 is provided with a first chamber 151, a second chamber 152 and a third chamber 153. On the axis X perpendicular to the relative joining direction D, the first The second chamber 152 is located between the first chamber 151 and the third chamber 153, the first fan wheel 21 is arranged in the first chamber 151, and the second fan wheel 22 is arranged in the second chamber 152 , the motor 23 is disposed in the third chamber 153 . Thereby, the first chamber 151 , the second chamber 152 and the third chamber 153 can effectively separate the first fan wheel 21 , the second fan wheel 22 and the motor 23 respectively.

The number of fan wheels of the fluid delivery device 1 of the present invention can be more than two, and the number of the chamber can be more than three corresponding to the number of fan wheels. For example, when the number of fan wheels is three, the number of chambers can be set to four; when the number of fan wheels is four, the number of chambers can be set to five, and so on. Thereby, the fluid output pressure is increased.

In one embodiment, the housing 10 has a peripheral wall in the third chamber 153, the peripheral wall is provided with at least one first positioning portion F1, the motor 23 is provided with at least one second positioning portion F2, the first positioning portion F1 and The second positioning parts F2 are positioned corresponding to each other. In one embodiment, the first positioning portion F1 and the second positioning portion F2 are respectively a plane that abuts against each other. In this way, the first positioning portion F1 and the second positioning portion F2 can be more closely attached to provide better protection against the motor 23 . Rotation positioning effect.

In one embodiment, the casing 10 is provided with a first conveying part 16 and a second conveying part 17, the first conveying part 16 and the second conveying part 17 communicate with the accommodating space 15, and the first conveying part 16 Correspondingly communicating with the first chamber 151, the second conveying part 17 correspondingly communicates with the second chamber 152, the first conveying part 16 and the second conveying part 17 are pipe fittings respectively, so as to be disassembled in the housing 10, The first conveying part 16 and the second conveying part 17 are disposed on the first casing 11 .

When the fluid conveying device 1 of the present invention is actually used, when the first conveying part 16 is set as the input end of the fluid, the second conveying part 17 can be set as the output end of the fluid; or, when the first conveying part When 16 is set as the output end of the fluid, the second conveying part 17 can be set as the input end of the fluid, thereby improving the convenience of use. Moreover, the motor 23 can synchronously drive the first fan wheel 21 and the second fan wheel 22 to rotate in a predetermined direction (such as clockwise or counterclockwise), which can drive and pressurize the fluid flow more effectively, thereby enhancing the fluid flow. the delivery efficiency.

In one embodiment, the first fan wheel 21, the second fan wheel 22, and the motor 23 of the fluid driver 20 can be assembled into one body and then directly placed into the accommodating space 15. The split design of the first housing 11 and the second housing 12 can be based on the relative joining direction D (perpendicular to the axial direction X), and then the first housing 11 and the second housing 12 are mutually Fitting, and clamping the periphery of the first housing 11 and the second housing 12 with the several restricting parts 13, 14, so that the fluid driving part 20 of integrated design after combination is sealed and enclosed. Covering the accommodation space 15 of the housing 10 provides better disassembly and assembly convenience, and the fluid driver 20 can be put into the housing 10 as a whole, or taken out from the housing 10 as a whole for convenience. Carry out maintenance work.

In one embodiment, the material of the first housing 11 and the second housing 12 of the fluid conveying device 1 of the present invention may be the same; thus, when the same material is used, the first housing 11 and the second housing The housing 12 is easy to manufacture and can effectively reduce costs. Alternatively, the first housing 11 And the material of the second casing 12 can be different. In one embodiment, the first casing 11 is a see-through material such as transparent acrylic, polycarbonate (PC) or polyvinyl chloride (PVC). material, translucent acrylic, PC or PVC material, the second housing 12 is a heat-conducting material (such as metal material, etc.) The above is limited, and other suitable materials can still be used; thereby, the accommodating space 15 of the housing 10 can be provided with a temperature sensing element (not shown) and a light emitting element (not shown), the light emitting element Corresponding to the first casing 11, the temperature-sensing element is electrically coupled to a control element (not shown in the figure) to control the light-emitting element. Utilizing the see-through function of the first casing 11, the temperature-sensing element can be used for Detecting the operating temperature of the motor 23 or the temperature of the fluid in the accommodating space 15, when the temperature exceeds a preset value, the control element can be used to control the light emitting element to emit a warning light of a specific color (such as red light, etc.) to remind the user to pay attention, and then achieve a better warning control function. In one embodiment, the fluid delivery device 1 of the present invention has several light-emitting elements. When the fluid delivery device 1 of the present invention is in operation, the plurality of light-emitting elements can emit lights of different colors to enhance the appearance and have a cool effect.

In one embodiment, when the first conveying part 16 is set as the input end of the fluid, and the second conveying part 17 is set as the output end of the fluid, when the motor 23 synchronously drives the first fan wheel 21 and The second fan wheel 22 rotates, and the first fan wheel 21 and the second fan wheel 22 can cooperate with each other to introduce the fluid from the first conveying part 16 through the first chamber 151 and the second chamber 152 sequentially. , and then the fluid is led out from the second delivery part 17 to achieve the purpose of circulating the fluid.

Fig. 3 shows a three-dimensional exploded view of the restricting member of the fluid delivery device according to an embodiment of the present invention when it is separated from the combined first casing and the second casing. Referring to Figures 2A, 2B and 3, in one embodiment, the limiting pieces include two limiting pieces 33, 34, the limiting piece 33 includes a straight portion 333, corresponding to the first extension portion 111 that has been engaged The straight section 117 and the second extension The straight section 127 of the portion 121. The limiting member 34 includes a straight portion 343 corresponding to clamp the straight section 116 of the first extension portion 111 and the straight section 126 of the second extension portion 121 . In one embodiment, the restricting member 33 is U-shaped, the restricting member 33 includes a first side portion 334, a second side portion 335 and a third side portion 336, the first side portion 334 and the first side portion 334 The two side portions 335 are corresponding, and the third side portion 336 connects the first side portion 334 and the second side portion 335 . Therefore, the first side part 334, the second side part 335 and the third side part 336 form a receiving part 337 to accommodate the straight section 117 and the second extension of the first extension part 111 that have been matched. The straight section 127 of the portion 121. In one embodiment, the plurality of restricting pieces 33 , 34 are tightly fitted and clamped to the above-mentioned section of the first extension part 111 and the above-mentioned section of the second extension part 121 that have been mated.

Fig. 4 shows a three-dimensional exploded view of the restricting member of the fluid delivery device according to an embodiment of the present invention when it is separated from the coupled first and second housings. 2A, 2B and 4, in one embodiment, the several straight sections 116, 117, 118, 119 of the first extension 111 include several first straight sections 116, 117 and several first Two straight sections 118, 119, the length of the first straight section 116, 117 of the first extension 111 is greater than the length of the second straight section 118, 119, the several straight sections of the second extension 121 Sections 126, 127, 128, 129 include several third straight sections 126, 127 and several fourth straight sections 128, 129, the length of the third straight sections 126, 127 of the second extension 121 greater than the length of the fourth straight section 128 , 129 . In one embodiment, the plurality of limiting pieces include two limiting pieces 43, 44, the limiting piece 43 includes two arc portions 431, 432 and a straight portion 433, wherein the two arc portions 431, 432 of the limiting piece 43 correspond to clamp The several arc-shaped sections 112, 115 of the first extension 111 and the several arc-shaped sections 122, 125 of the second extension 121 that have been aligned, the straight portion 433 of the limiting member 43 is clamped correspondingly The second straight section 118 of the first extension part 111 and the fourth straight section 128 of the second extension part 121 have been mated. The restricting member 44 includes two arc portions 441, 442 and a straight portion 443, wherein the two arc portions 441, 442 of the restricting member 44 are opposite to each other. The several arc sections 113, 114 of the first extension 111 and the several arc sections 123, 124 of the second extension 121 should be clamped together, and the straight section 443 of the limiting member 44 corresponds to The second straight section 119 of the first extension part 111 and the fourth straight section 129 of the second extension part 121 are sandwiched together. In one embodiment, the plurality of restricting pieces 43 , 44 are tightly fitted and clamped to the above-mentioned section of the first extension part 111 and the above-mentioned section of the second extension part 121 that have been mated.

FIG. 5 shows a three-dimensional exploded view of the restricting member of the fluid delivery device according to an embodiment of the present invention when it is separated from the coupled first and second housings. With reference to Figures 2A, 2B and 5, the several restricting members include four restricting members 51, 52, 53, 54, and the restricting member 51 includes an arc portion 511, which is correspondingly clamped to the first extension portion 111 that has been mated. The arc section 115 and the arc section 125 of the second extension part 121; the restricting member 52 includes an arc section 521 correspondingly clamping the arc section 114 of the first extension part 111 and the arc section 124 of the second extension 121; the restricting member 53 includes an arc 531, corresponding to the arc section 112 and the second extension 121 of the first extension 111 that have been joined together The arc section 122; the restricting member 54 includes an arc section 541, corresponding to clamp the arc section 113 of the first extension part 111 and the arc section of the second extension part 121 123. In one embodiment, the plurality of restricting pieces 51 , 52 , 53 , 54 are respectively tightly fitted and clamped to the above-mentioned section of the first extension part 111 and the above-mentioned section of the second extension part 121 that have been mated.

The fluid conveying device of the present invention utilizes the plurality of restricting pieces to be clamped to the periphery of the first casing and the second casing after they are combined to assemble the first casing and the second casing, which can improve the convenience of assembly performance, and will not cause the first casing or the second casing to break due to improper force application, so as to improve product yield. Moreover, the sealing and waterproof effect of the casing can be improved by utilizing the several restricting pieces.

The above-mentioned embodiments are only to illustrate the principles and effects of the present invention, but not to limit the present invention. invention. Modifications and changes made by those skilled in the art to the above embodiments still do not violate the spirit of the present invention. The scope of rights of the present invention should be listed in the scope of patent application described later.

1: Fluid delivery device

11: The first shell

12: Second shell

13,14: Restricted parts

15:Accommodating space

16: The first conveying department

17: The second conveying part

18: sealing ring

20: Fluid driver

21: The first round

22: The second fan wheel

23: motor

110: Perimeter of the first casing

111: the first extension

112,113,114,115: arc section

116,117: straight section (first straight section)

118,119: straight section (second straight section)

120: Perimeter of the second casing

121: second extension

122,123,125: arc section

126: Straight section (the third straight section)

128: Straight section (fourth straight section)

131,132: Arc

133: straight part

134:Accommodating Department

141,142: Arc

143: straight part

144:Accommodating Department

151: The first chamber

152: The second chamber

153: The third chamber

D: Relative joining direction

F1: The first positioning department

F2: The second positioning part

P: positioning bump

S: positioning groove

X: Axial

Claims (29)

A fluid conveying device, comprising: a housing with a first housing, a second housing and several restricting pieces, the first housing and the second housing are matched in a relative joint direction, and the number two restricting pieces are clamped respectively on the periphery of the first casing and the second casing after they are joined together, the first casing has a first extension part arranged on the periphery of the first casing, and the second casing The body has a second extension, which is arranged on the periphery of the second housing, and the plurality of restricting pieces respectively sandwich the matched first extension and the second extension, and the first extension or the second At least one of the extension parts further includes a positioning protrusion, and at least one of the restricting parts further includes a positioning groove, which is arranged at a corresponding position of the positioning protrusion to accommodate the positioning protrusion; and a fluid The driving part has a motor and at least one fan wheel. The motor and the at least one fan wheel are arranged in the first casing and the second casing. The motor is used to drive the at least one fan wheel to rotate. The fluid conveying device according to claim 1, wherein the first extension part includes several arcuate sections and several straight sections, and the second extension part includes several arcuate sections and several straight sections. The fluid conveying device according to claim 2, wherein the plurality of restricting members include two restricting members, each of which includes two arc portions and a straight portion, and the two arc portions of each of the restricting members are correspondingly clamped to the mated first Several arc-shaped sections of the extension part and several arc-shaped sections of the second extension part, the straight section of each restricting piece correspond to the straight section and the second section of the first extension part that have been joined together. The straight section of the extension. The fluid conveying device according to claim 2, wherein the plurality of restricting members include two restricting members, each of which includes a straight portion corresponding to the straight section and the second extending portion of the first extending portion that have been joined together The straight section. The fluid conveying device according to claim 2, wherein the plurality of restricting members include four restricting members, and each restricting member includes an arc portion corresponding to the arc-shaped section and the second extending portion that are clamped together. The arc section of the extension. The fluid conveying device according to claim 2, wherein the several straight sections of the first extension include several first straight sections and several second straight sections, the first straight section of the first extension The length of the section is greater than the length of the second straight section, the several straight sections of the second extension include several third straight sections and several fourth straight sections, the first section of the second extension The lengths of the three straight sections are greater than the length of the fourth straight section. The fluid conveying device according to claim 6, wherein the plurality of restricting members include two restricting members, each of which includes two arc portions and a straight portion, and the two arc portions of each of the restricting members are correspondingly clamped to the mated first The several arc-shaped sections of the extension part and the several arc-shaped sections of the second extension part, the straight part of each of the restricting parts are correspondingly sandwiched by the second straight section of the first extension part and the The fourth straight section of the second extension. The fluid conveying device according to claim 1, wherein a sealing ring is provided between the first extension portion and the second extension portion of the first housing and the second housing. The fluid conveying device according to claim 8, wherein the sealing ring is made of waterproof rubber or waterproof silicone. The fluid delivery device according to claim 1, wherein the first extension or the second extension has a peripheral length, and the plurality of restriction members has a total length which is the sum of the individual lengths of the plurality of restriction members, The total length is 70% or more of the peripheral length. The fluid delivery device according to claim 1, wherein each of the restricting members includes a receiving portion for receiving the coupled first extension portion and the second extension portion. Such as the fluid delivery device of claim 11, wherein each of the restricting members is in the shape of ㄇ, each of the restricting members includes a first side portion, a second side portion and a third side portion, the first side portion and the first side portion The two side portions are corresponding, and the third side portion connects the first side portion and the second side portion. A fluid conveying device, comprising: a housing with a first housing, a second housing and several restricting pieces, the first housing and the second housing are matched in a relative joint direction, and the number two restricting parts are clamped respectively on the periphery of the first casing and the second casing after they are combined; and a fluid drive part has a motor and at least one fan wheel, the motor and the at least one fan wheel are arranged on In the first casing and the second casing, the motor is used to drive the at least one fan wheel to rotate; wherein the casing further includes an accommodating space for accommodating the at least one fan wheel and the motor, and the at least one fan wheel It includes a first fan wheel and a second fan wheel, the first fan wheel and the second fan wheel are connected, and the accommodating space is provided with a first chamber, a second chamber and a third chamber. In an axial direction perpendicular to the relative joining direction, the second chamber is located between the first chamber and the third chamber Between, the first fan wheel is arranged in the first chamber, the second fan wheel is arranged in the second chamber, and the motor is arranged in the third chamber. The fluid delivery device according to claim 13, wherein the third chamber is provided with at least one first positioning part, the motor is provided with at least one second positioning part, and the first positioning part and the second positioning part are positioned corresponding to each other. The fluid delivery device according to claim 14, wherein the first positioning portion and the second positioning portion are respectively a plane that abuts against each other. The fluid delivery device according to claim 13, wherein the casing is provided with a first delivery part and a second delivery part, the first delivery part and the second delivery part communicate with the accommodating space, and the first delivery part communicates with the The first chamber and the second conveying part communicate with the second chamber correspondingly, and the first conveying part and the second conveying part are arranged on the first casing. A housing for a fluid delivery device, comprising: a first housing with a periphery; a second housing with a periphery, the first housing and the second housing are mated in a relative joining direction; and a plurality of restricting pieces, which are clamped respectively on the periphery of the first casing and the second casing after they are combined; wherein the first casing has a first extension, which is arranged on the periphery of the first casing, The second housing has a second extension, which is arranged on the periphery of the second housing. At least one of the part or the second extension part further includes a positioning protrusion, and at least one of the several restricting parts further includes a positioning groove, which is arranged at a corresponding position of the positioning protrusion to accommodate the positioning protrusion point. The housing for a fluid delivery device according to claim 17, wherein the first extension includes several arc sections and several straight sections, and the second extension includes several arc sections and several straight sections part. The shell for fluid delivery device as claimed in claim 18, wherein the several restricting members include two restricting members, each of which includes two arc portions and a straight portion, and the two arc portions of each of the restricting members are correspondingly clamped and closed Several arc-shaped sections of the first extension part and several arc-shaped sections of the second extension part, the straight part of each restricting piece corresponds to the straight part of the first extension part that has been mated segment and the straight segment of the second extension. According to claim 18, the housing for a fluid delivery device, wherein the plurality of restricting members include two restricting members, each of which includes a straight portion, corresponding to the straight section and The straight section of the second extension. According to claim 18, the housing for a fluid delivery device, wherein the plurality of restricting members include four restricting members, each of which includes an arc portion corresponding to the plurality of arcs that clamp the mated first extension portion section and several arc sections of the second extension. The housing for a fluid delivery device as claimed in claim 18, wherein the plurality of straight sections of the first extension include a plurality of first straight sections and a plurality of second straight sections, the first extension of the First The length of the straight section is greater than the length of the second straight section, the several straight sections of the second extension include several third straight sections and several fourth straight sections, the second extension The length of the third straight section is greater than the length of the fourth straight section. The housing for the fluid conveying device as claimed in claim 22, wherein the several restricting members include two restricting members, each of which includes two arc portions and a straight portion, and the two arc portions of each of the restricting members are correspondingly clamped and closed Several arc-shaped sections of the first extension part and several arc-shaped sections of the second extension part, the straight part of each restricting part is correspondingly sandwiched with the second extension part of the first extension part The straight section and the fourth straight section of the second extension. According to claim 17, the housing for a fluid delivery device, wherein a sealing ring is provided between the first extension portion and the second extension portion of the first casing and the second casing. According to claim 24, the housing for a fluid delivery device, wherein the sealing ring is made of waterproof rubber or waterproof silicone. According to claim 17, the housing for a fluid delivery device, wherein the housing is provided with a first delivery part and a second delivery part, and the first delivery part and the second delivery part are arranged on the first casing. The housing for a fluid delivery device as claimed in claim 17, wherein the first extension or the second extension has a peripheral length, and the plurality of restriction members has a total length that is the individual of the plurality of restriction members The sum of the lengths is 70% or more of the perimeter length. According to claim 17, the housing for a fluid delivery device, wherein each of the restricting members includes a receiving portion for receiving the coupled first extension portion and the second extension portion. Such as the housing for the fluid delivery device of claim 28, wherein each of the restricting members is in the shape of ㄇ, and each of the restricting members includes a first side, a second side and a third side, and the first side part and the second side part are corresponding, and the third side part connects the first side part and the second side part.

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