TWI708895B - Pump - Google Patents

Abstract

A pump includes a housing unit, a motor unit and a piston unit. The housing unit includes a base, a first housing part and a second housing part. The base has a base wall, a surrounding wall and a flow channel, and the base wall and the surrounding wall jointly define a chamber. The first housing component has a first outer casing, and the first outer casing has a first accommodating space for accommodating liquid from the outside. The second housing component has a second outer shell, and the second outer shell has a second accommodating space communicating with the flow channel and the chamber, and the second accommodating space is used for accommodating liquid from the flow channel. The motor unit pressurizes the liquid. The piston unit is movably arranged in the chamber. When the pressure of the liquid located in the second containing space is greater than a predetermined pressure, the piston unit will be driven to move in the direction of the base wall in the containing space.

Description

Pump

The present invention relates to a pump, especially a pump that pressurizes a liquid.

With the advancement of the development technology of pump parts, various pumps are also developing in the direction of lighter weight and downsizing. Among them, one type of pump includes a housing and a motor. The shell has an inlet and an outlet. The motor is externally added to the housing, and has a chamber communicating with the housing, and a pressurizing member that can drive the gas in the chamber to pressurize the liquid flowing through the housing. However, because the housing and the pressurizing member have a certain degree of volume, the overall volume is huge, and it is particularly protruding on a certain side, which is not easy to handle. Furthermore, because the layout of each installation space is not fixed, installation flexibility is reduced for pumps with bulky and rugged shapes.

Therefore, the purpose of the present invention is to provide a pump that reduces the overall volume and is easy to transport, thereby improving the convenience of transport and being less susceptible to space constraints than conventional pumps.

Therefore, the pump of the present invention is suitable for pressurizing liquid. The pump includes a housing unit, a motor unit and a piston unit. The housing unit includes a base, a first housing part and a second housing part. The base has a base wall and a surrounding wall, the base wall has a central axis, the surrounding wall extends from the periphery of the base wall along the axial direction of the central axis, and the surrounding wall has a surrounding wall adjacent to the base wall A first end surface, a second end surface away from the base wall, and a flow channel extending along the axial direction and penetrating the first end surface and the second end surface, the base wall and the surrounding wall jointly define an opening located at the The chamber on the opposite side of the basal wall. The first housing component is located on a side of the base adjacent to the first end surface, and has a first outer shell surrounding the central axis and extending along the axial direction. The first outer shell has a connection to the base The first outer fixing end surface, a first outer opening end surface far away from the base, and a first accommodating space extending from the first outer opening end surface to the first outer fixing end surface and communicating with the flow channel , The first accommodating space is used for accommodating liquid from the outside. The second housing component is located on the side of the base adjacent to the second end surface, and has a second outer shell surrounding the central axis and extending along the axial direction, and the second outer shell has a connection to the base The second outer fixed end surface, a second outer through port end surface away from the base, and a second outer through port end surface extending through to the second outer fixed end surface and communicating the flow passage and the chamber Two accommodating spaces, the second accommodating space is used for accommodating liquid from the flow channel. The motor unit is arranged in the first accommodating space and pressurizes the liquid located in the first accommodating space, the flow channel and the second accommodating space. The piston unit is movably arranged in the chamber in an axial direction parallel to the central axis. Wherein, when the pressure of the liquid in the second accommodating space When the force is greater than a predetermined pressure, the piston unit will be driven to move toward the base wall in the chamber.

In some embodiments, the piston unit includes a piston block slidably disposed in the chamber in an axial direction parallel to the central axis, and two opposite ends are respectively connected to the piston block and the base wall and can be mounted on the base wall. An elastic piece that stretches in the axial direction.

In some embodiments, the pump further includes a sensing element disposed on the surrounding wall of the base and facing the chamber; the piston unit further includes a magnetic ring disposed on an outer periphery of the piston block , The magnetic ring can generate a magnetic field with the movement of the piston block for being sensed by the sensing element and generating a magnetic field related to the portion located in the second accommodating space and the cavity adjacent to the second accommodating space Pressure measurement value.

In some embodiments, the first housing component further includes a first inner housing located in the first accommodating space, and the first inner housing has a first inner fixed end surface fixed to the base, And a first inner port end surface far away from the base, and the first inner shell defines a first inner portion isolated from the flow channel; the motor unit includes a first inner portion Motor, a rotating shaft connected to the motor and protruding between the first inner casing and the first outer casing, and an impeller arranged on the rotating shaft, the impeller facing the end surface of the first outer port and along a vertical axis The axial radial extension.

In some embodiments, the second housing component further includes a second inner housing located in the second accommodating space and covering the opening of the housing, and the second inner housing has a housing covering the housing Opening and connecting the second inner fixed end surface of the base, and a remote The end surface of the second inner opening of the base, the second inner shell defines a second outer accommodating part communicating with the flow channel, and a second content communicating the accommodating chamber and the second outer accommodating part The second inner containing portion has a connection port adjacent to the chamber, and an inlet and outlet adjacent to the second outer containing portion and having a diameter smaller than the connection port.

In some embodiments, the second inner shell further has an inner shoulder that extends from the outer surface between the second inner fixing end surface and the second inner port end surface and extends radially outward The second outer shell has an outer shoulder that protrudes radially inward from the inner surface close to the inner shoulder and forms a gap with the inner shoulder; the pump also includes an outer shoulder that can be along the shaft A stop valve slidably disposed between the end surface of the second inner port and the end surface of the second outer port, the stop valve can abut against the inner shoulder and the outer shoulder to close the gap, Then isolate the flow channel.

In some embodiments, the check valve includes a first seat body, a plurality of brackets, and a second seat body. The first seat body is annular, and the brackets are disposed on the first seat body and are formed by the second seat body. The periphery of the seat body extends inward, the second seat body is fixed to the brackets, and the stop valve can correspondingly abut against the inner shoulder and the outer shoulder on the first seat body to close the gap The state and the open state in which the gap is spaced for the liquid to pass along the gap and the gap between two adjacent brackets are switched.

In some embodiments, the end surface of the first outer port and the end surface of the second outer port are opposite ends on the central axis.

The effect of the present invention is: by accommodating the piston unit in the chamber, And change the location of the runners, thereby greatly reducing the overall volume. Furthermore, the piston unit can be used as a buffer space when the pressure of the second external housing part is too high, and at the same time, it can absorb the water hammer generated by the water pipe when the water is shut off, and the gas and water pressure absorbed can also be used as The pressure provided to the water can not only achieve safe use but also save electricity. In addition, since the outer surfaces of the base, the first outer shell, and the second outer shell are roughly arc-shaped and there is no height difference in the joints, in addition to the above-mentioned convenient transportation due to the reduction in size, the transportation can be avoided. Scratches or cuts, even because of the removal of redundant angular structures, are less likely to be restricted by the environment during installation.

1: Housing unit

11: Pedestal

111: basal wall

112: Wall

113: Room

146: second rib

147: Outer shoulder

148: Second housing space

149: Second external fixed end face

151: The end face of the second outer port

114: first end face

115: second end face

116: Runner

117: First Pressure

118: The second pressure section

12: The first housing part

121: first outer shell

122: The first waterproof gasket

123: first inner shell

124: first shell

125: second shell

126: First rib

127: The first housing space

128: The first external fixed end face

129: The end face of the first outer port

131: First interface

132: First Supply Port

133: The first internal fixed end face

134: the end face of the first inner port

135: The first content placement department

136: The first outer housing part

137: First channel

14: The second housing part

141: second outer shell

152: second interface

153: second supply port

154: second internal fixed end face

155: The end face of the second inner port

156: The second content placement department

157: second outer housing part

158: connection port

159: Entrance and Exit

161: Second Channel

162: inner shoulder

2: Piston unit

21: Piston block

22: Elastic parts

23: Magnetic ring

3: Sensing parts

4: Motor unit

41: Motor

42: shaft

43: impeller

5: Stop valve

51: First Block

52: bracket

53: Second Block

54: gap

142: The second waterproof gasket

143: second inner shell

144: Third Shell

145: The fourth shell

91: Water tower supply pipe

92: Household water pipe

L: central axis

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a perspective view of an embodiment of the pump of the present invention; Figure 2 is a partial three-dimensional exploded view of the embodiment Figure 3 is a perspective exploded view of this embodiment; Figure 4 is a perspective exploded view from another perspective of Figure 3; Figure 5 is a schematic cross-sectional view taken along the line VV of Figure 2; Figure 6 is the embodiment of A three-dimensional exploded view; Figure 7 is a three-dimensional exploded view from another perspective of Figure 6; Figure 8 is a schematic cross-sectional view taken along the line VIII-VIII of Figure 2; Figure 9 is a perspective exploded view of this embodiment; Figure 10 is a perspective exploded view of Figure 9 from another perspective; Figure 11 is a schematic cross-sectional view taken along the line XI-XI of Figure 2; Figure 12 is the embodiment of A three-dimensional view; and Figures 13 to 17 are schematic cross-sectional views of this embodiment.

1 and 2, an embodiment of the pump of the present invention is suitable for pressurizing liquid (such as water). The pump includes a housing unit 1, a piston unit 2, a sensing element 3, and a Motor unit 4 and a stop valve 5. In this embodiment, the pump is an example of a pressurized pump installed horizontally on the top floor, and connects a water tower supply pipe 91 with a corresponding household water pipe 92, and the pump is used to receive the water supply pipe 91 from the water tower. The water is pressurized and then introduced into the household water pipe 92, thereby providing a water flow with a water pressure and flow rate that the household can use normally. Of course, the installation direction of the pump can be adjusted according to the actual installation environment, and it is not limited to the horizontal state.

Referring to FIGS. 2 to 5, the housing unit 1 includes a base 11, a first housing part 12 and a second housing part 14. The base 11 is specifically cylindrical and forms a hollow groove. The base 11 has a base wall 111 and a surrounding wall 112. The base wall 111 has a central axis L passing through the center and extending horizontally. . The surrounding wall 112 from the The peripheral edge of the base wall 111 extends along the axial direction of the central axis L. The surrounding wall 112 has a first end surface 114 adjacent to the base wall 111, a second end surface 115 away from the base wall 111, and a The flow channel 116 extending axially and penetrating the first end surface 114 and the second end surface 115, the base wall 111 and the surrounding wall 112 jointly define a chamber 113 with an opening on the opposite side of the base wall 111 (that is, the Hollow groove). In this embodiment, the surrounding wall 112 has a plurality of flow passages 116 that surround the central axis L and are spaced apart from each other. Each flow passage 116 extends from the first end surface 114 to the second end surface 115 in parallel to the axial direction as described above. However, the extending direction of the flow passages 116 is not limited to being parallel to the axial direction. In another embodiment, each flow passage 116 may also spiral around the container from the first end surface 114. The chamber 113 extends to the second end surface 115, thereby increasing the area of the water flowing through the surrounding wall 112. In addition, the surrounding wall 112 may also define a flow channel 116 that surrounds the central axis L and has an annular cross section.

5 to 8, the first housing part 12 is located on the side of the base 11 adjacent to the first end surface 114, and has a first outer shell 121, a first waterproof gasket 122, and a first inner壳123。 Specifically, the first outer shell 121 has a funnel shape and surrounds the central axis L and extends along the axial direction. The first outer shell 121 has a semi-spherical and hollow first shell 124, and a The second shell portion 125 that is cylindrical and hollow and communicates with the first shell portion 124, a plurality of first ribs 126 connected to the inner surface of the first shell portion 124 around the central axis L and spaced apart from each other, the first A rib 126 can also be integrally formed with the first outer shell 121. The first shell 124 and the second shell 125 A first accommodating space 127 connected to the flow passages 116 is defined together.

Furthermore, the first shell portion 124 has a first outer fixing end surface 128 connected to the base 11. The second shell portion 125 has a first outer opening end surface 129 away from the base 11 and the first shell portion 124. The first accommodating space 127 extends from the first outer port end surface 129 to the first outer fixing end surface 128. In this embodiment, the first accommodating space 127 is from the first outer port end surface 129 It first extends in parallel to the axial direction to the first shell portion 124 and then expands to the first outer fixed end surface 128 in a funnel shape. For ease of description, the first accommodating space 127 has a water supply pipe for the water tower The first port 131 connected with 91 and a first supply port 132 adjacent to the flow channels 116 and having a diameter much larger than the first port 131. The first external fixing end surface 128 is screwed to the first end surface 114 so that the first supply port 132 communicates with the flow passages 116. The first accommodating space 127 is used for receiving, accommodating and guiding water from the water tower supply pipe 91. In addition, the outer peripheral edge of the first outer fixed end surface 128 is in line with the outer peripheral edge of the first end surface 114, thereby improving the flatness of the connection between the first outer shell 121 and the base 11, and avoiding problems caused by transportation and installation. hurt.

In conjunction with FIG. 2, the first waterproof gasket 122 has a ring shape and is located between the first outer shell 121 and the surrounding wall 112. Specifically, the diameter of the first waterproof gasket 122 is substantially equal to the diameter of the surrounding wall 112. And a part of the structure of the first waterproof gasket 122 surrounds the circumference of the openings of the flow passages 116. When the first outer shell 121 is screwed to the base 11, the first outer shell 121 and the surrounding wall 112 Will be pressed urgently A waterproof gasket 122 to ensure that the water entering the two adjacent flow passages 116 will not interfere with each other, and the water located in the first accommodating space 127 will not pass through the connection between the first housing 121 and the base 11 The water pressure of each flow channel 116 and the overall water pressure are maintained.

Continue to refer to FIGS. 5 to 8, the shape of the first inner shell 123 is, for example, a bowl shape, and is located in the first accommodating space 127. The first inner shell 123 has a first inner fixing end surface 133 fixed to the base 11 and a first inner through-opening end surface 134 away from the base 11. In this embodiment, the diameter of the outer peripheral edge of the first inner fixed end surface 133 is slightly larger than the diameter of the inner peripheral edge of the first end surface 114, but does not exceed the position where the runners 116 are arranged, that is, the first inner fixed The end surface 133 does not block the flow passages 116, and the first inner shell 123 gradually shrinks inward from the first outer fixing end surface 128 toward the first inner port end surface 134. In this configuration, the first inner shell 123 defines a first inner housing portion 135 isolated from the flow passages 116, and a first inner housing portion 135 isolated from the first inner housing portion 135 and connected to the flow passages 116 and The first outer housing portion 136 of the water tower supply pipe 91, in other words, the first inner shell 123 divides the first housing space 127 into the first inner housing portion 135 and the first outer housing portion that are isolated from each other 136, and the outer surface of the first inner shell 123 abuts against the first ribs 126, so that a first channel connected to the corresponding flow channel 116 is formed between two adjacent first ribs 126 137.

5, 9 to 11, the second housing member 14 is located on the side of the base 11 adjacent to the second end surface 115, and has a second outer shell 141, a second Waterproof gasket 142 and a second inner shell 143. The second outer shell 141 has a funnel shape like the structure of the first outer shell 121 and surrounds the central axis L and extends along the axial direction. The second outer shell 141 has a semi-spherical and hollow third shell Part 144, a fourth shell part 145 that is cylindrical and hollow and communicates with the third shell part 144, a plurality of second ribs spaced apart from each other and disposed on the inner surface of the third shell part 144 around the central axis L 146, and an outer shoulder 147. The third shell portion 144 and the fourth shell portion 145 jointly define a second accommodating space 148 communicating with the flow passages 116.

The third shell portion 144 has a second outer fixing end surface 149 connected to the base 11. The fourth shell portion 145 has a second outer opening end surface 151 away from the base 11 and the third shell portion 144. The second accommodating space 148 extends from the second outer opening end surface 151 to the second outer fixing end surface 149 and communicates with the flow passages 116 and the accommodating chamber 113. In this embodiment, the second housing The space 148 extends from the second outer port end surface 151 parallel to the axial direction to the third shell portion 144 and then expands in a funnel shape to the second outer fixing end surface 149. For ease of description, the second The accommodating space 148 has a second interface 152 for receiving water from the flow channels 116 and a second supply port 153 connected to the domestic water pipe 92. The second outer fixing end surface 149 is screwed to the second end surface 115 to make the second interface 152 communicate with the flow passages 116. The second accommodating space 148 is used for receiving, accommodating and guiding the water from the flow channels 116. In addition, the outer peripheral edge of the second outer fixed end surface 149 is in line with the outer peripheral edge of the second end surface 115, thereby improving the flatness of the connection between the second outer shell 141 and the base 11, avoiding transportation and installation Cause injury at the time. On the other hand, the outer shoulder portion 147 protrudes inwardly in the radial direction from the junction of the inner surface of the third shell portion 144 and the inner surface of the fourth shell portion 145 to form a ring shape.

With reference to FIG. 2, the second waterproof gasket 142 is annular and is located between the second outer shell 141 and the surrounding wall 112. Specifically, the diameter of the second waterproof gasket 142 is substantially equal to the diameter of the surrounding wall 112. And a part of the structure of the second waterproof gasket 142 surrounds the periphery of the openings of the flow passages 116. When the second outer shell 141 is screw-locked to the base 11, the second outer shell 141 and the surrounding wall 112 The second waterproof gasket 142 will be pressed tightly to ensure that the water to be discharged from the two adjacent flow channels 116 will not interfere with each other, and the water located in the second accommodating space 148 will not pass through the second outer shell. The connection between 141 and the base 11 leaks out, thereby maintaining the water pressure of each flow channel 116 and the overall water pressure.

5, 9 to 11, the shape of the second inner shell 143 is funnel-shaped, and the size is smaller than the second outer shell 141, and is located in the second accommodating space 148 and covering the chamber 113, the second inner shell 143 has a second inner fixed end surface 154 that covers the opening of the chamber 113 and is connected to the base 11, a second inner port end surface 155 away from the base 11, and A inner shoulder 162. In this embodiment, the diameter of the outer periphery of the second inner fixing end surface 154 is greater than the diameter of the inner periphery of the second end surface 115, but does not exceed the position where the flow channels 116 are arranged, that is, the second inner fixing The end surface 154 will not block the flow channels 116, and the second inner shell 143 is from the The second outer fixing end surface 149 gradually shrinks inwardly toward the second inner port end surface 155. In this configuration, the second inner shell 143 defines a second outer accommodating portion 157 connecting the flow passages 116 and the second supply port 153, and a connecting chamber 113 and the second outer The second inner housing portion 156 of the housing portion 157, in other words, the second inner housing 143 divides the second housing space 148 into the second inner housing portion 156 and the second outer housing portion 157, wherein the The second inner containing portion 156 has a connecting port 158 adjacent to the chamber 113, and an inlet 159 adjacent to the second outer containing portion 157 and having a diameter smaller than the connecting port 158, so as to use different diameter structures The water in the second outer accommodating portion 157 and the gas in the chamber 113 apply pressure, and the position of the inlet and outlet 159 is located in the fourth shell portion 145 and far from the second supply port 153. In addition, the outer surface of the second inner shell 143 abuts against the second ribs 146, so that a second channel 161 communicating with the corresponding flow channel 116 is formed between two adjacent second ribs 146 .

Referring to FIG. 11, the inner shoulder 162 projects radially outward from the outer surface of the second inner housing 143 and is positioned at the outer shoulder 147. To be precise, the outer shoulder 147 and the The inner shoulders 162 are in the same radial direction, and are spaced apart from each other to form a gap 54 that allows the water from the flow channels 116 to flow to the second supply port 153.

Referring to Figure 2, Figure 5, Figure 8 and Figure 11, through the above-mentioned manner in which the flow passages 116 in the housing unit 1 are arranged in an annular interval, it is avoided that any surface of the base 11 is particularly protruding compared to other surfaces The structure of this allows the installer to carry it better. Furthermore, since the first port 131 and the second supply port 153 are both on the central axis L, and the The flow channel 116 also extends along the axial direction, so that the water can flow along the axial direction and in the process of flowing, the flow rate of the water will not be hindered due to the restriction of the structure turning, thereby increasing the water flow rate.

Referring to FIGS. 3 and 5, the piston unit 2 is movably disposed in the chamber 113 in an axial direction parallel to the central axis L. Specifically, the piston unit 2 includes a piston block 21 slidably disposed in the chamber 113 in an axial direction parallel to the central axis L, and two opposite ends respectively connect the piston block 21 and the base wall 111 and can The elastic member 22 stretches in the axial direction, and a magnetic ring 23 arranged on an outer periphery of the piston block 21. The magnetic ring 23 can generate a magnetic field along with the movement of the piston block 21. In this embodiment, the shape of the piston block 21 corresponds to the shape of the chamber 113, for example a cylindrical shape. The piston block 21 separates the chamber 113 to form a first pressure portion 117 and a first pressure portion 117 and a first pressure portion 117 that are airtight to each other. Two pressure parts 118, wherein the first pressure part 117 is located between the base wall 111 and the piston block 21, and the second pressure part 118 is located between the piston block 21 and the second housing part 14. At least one sealing element (not shown) can be added to the outer surface of the piston block 21. The sealing element has flexibility and two opposite ends are respectively pressed against the outer surface of the piston block 21 and the inner surface of the surrounding wall 112, by This improves the air tightness of the first pressure portion 117 and the second pressure portion 118. The elastic member 22 is, for example, a coil spring, and two opposite ends are respectively clamped on the base wall 111 and a side surface of the piston block 21 facing the first pressure portion 117, thereby making the piston a solid and elastic structure The block 21 can move more stably in the chamber 113 in a state where any one of the first pressure portion 117 and the second pressure portion 118 is compressed. move. Of course, in another embodiment, the elastic member 22 can also be omitted and the first pressure portion 117 can be a closed space, which is compressed by the piston block 21 through air pressure or pushed by the piston block 21 through air pressure.

The sensing element 3 is disposed on the surrounding wall 112 of the base 11 and opposite to the containing chamber 113. In this embodiment, the sensing element 3 is an example of a circuit board. The circuit board is provided with a plurality of magnetic field sensing elements (not shown), in addition, it also includes a control unit (such as a processor) (Figure (Not shown), specifically, the magnetic field sensing elements are arranged along the axial direction on the circuit board, whereby the magnetic field generated when the magnetic ring 23 moves in the chamber 113 can be moved to different positions The magnetic field sensing element senses and is further converted by the control unit into pressure measurement values related to the water and gas located in the second inner portion 156 and the second pressure portion 118 (see FIGS. 5 and 11) , And the measured values of the water and gas pressures located in the second inner containing portion 156 and the second pressure portion 118 are also related to the pressure of the water located in the second outer containing portion 157 (see FIG. 11).

Referring to FIGS. 5, 7, 8 and 11, the motor unit 4 is disposed in the first accommodating space 127 and opposite to the first outer accommodating portion 136, the flow passages 116 and the second outer accommodating The water in the portion 157 and the second inner portion 156 is pressurized. The motor unit 4 includes a motor 41 disposed on the first inner portion 135, a rotating shaft 42 connected to the motor 41 and protruding between the first inner housing 123 and the first outer housing 121, and a The impeller 43 is provided on the rotating shaft 42. The impeller 43 faces the first outer port end surface 129 and extends along a radial direction perpendicular to the axial direction. In this embodiment, the motor 41 is, for example, a brushless motor. This achieves the advantages of light weight, high power, and low noise at the same time. The motor unit 4 is specifically that the motor 41 is locked to the base wall 111 and is sealed and covered on the first inner portion 135 by the first inner housing 123, thereby achieving a waterproof effect and prolonging the use of the motor 41 Life expectancy, of course, the motor 41 can also be directly fixed inside the first inner casing 123, which is more convenient for assembly, and the motor 41 can also be waterproofly covered. The rotating shaft 42 is located on the central shaft L, one end of which is connected to the motor 41 and can be driven to rotate by the motor 41, and the other end protrudes outside the first inner housing 123 and is located in the first outer housing Department 136. The impeller 43 is mounted on an end of the rotating shaft 42 protruding from the first outer accommodating portion 136. More clearly, the impeller 43 is located in the space of the first outer accommodating portion 136 in the first housing portion 124 . Through the above structure, as the motor 41 drives the shaft 42 to drive the impeller 43, the impeller 43 can beat the water from the first interface 131, so that the water is pressurized and the water is driven to flow in the radial direction. The first channels 137. The water pressure is formed by the force of the impeller 43 and the water pressure provided by the housing unit 1 (see FIG. 2). Of course, the water pressure can be changed by adjusting the rotation speed of the impeller 43, so that the water supplied from the water tower to the water pipe 91 can be supplied to the corresponding household at an appropriate flow rate. In addition, the radial movement of water through the impeller 43 can increase the speed of entering the first channels 137, thereby increasing the overall flow velocity. Since water passes through the first inner shell 123 when passing through the first passages 137, the heat generated by the operation of the motor 41 can be taken away so that the motor 41 can be cooled down and its service life can be prolonged. At the same time, the water absorbs heat energy. The formation of warm water can be used by users.

9 to 12, the stop valve 5 is movably arranged in the axial direction between the second inner port end surface 155 and the second outer port end surface 151, the stop valve 5 can lean against The inner shoulder 162 and the outer shoulder 147 close the gap 54 to isolate the flow passages 116 (refer to FIG. 5) and the domestic water pipe 92. Specifically, the stop valve 5 includes a first seat body 51, a plurality of brackets 52, and a second seat body 53. The first seat body 51 is annular and has a larger diameter than the second seat body 53, and the brackets 52 is symmetrically arranged on the first seat body 51 and extends inward from the periphery of the first seat body 51. The second seat body 53 is in the shape of a disc and is fixed to the other end of the brackets 52, whereby the block The stop valve 5 can abut against the inner shoulder portion 162 and the outer shoulder portion 147 on the first seat body 51 to close the closed state of the gap 54 and space the gap 54 for liquid along the gap 54 and adjacent two The gap between the brackets 52 is switched between the open states through which the gaps pass. More specifically, in the closed state, the stop valve 5 covers the second inner housing 143 to form one end of the inlet and outlet 159, and the first seat 51 of the stop valve 5 abuts against the inner shoulder. 162 and the outer shoulder 147 to close the gap 54, and the brackets 52 surround the second inner shell 143 to form one end of the entrance 159, and the second seat 53 is spaced from the side of the first seat 51 At the entrance 159. In the open state, the stop valve 5 is far away from the second inner housing 143 to form one end of the inlet and outlet 159 so that the gap 54 is opened.

Referring to Figure 13, when the installation of the pump is completed but the water tower supply pipe 91 and the domestic water pipe 92 are not opened, the first outer housing portion 136, the flow passages 116, the second inner housing portion 156, and the The two external accommodating parts 157 and the second pressure part 118 are both full In this state, the stop valve 5 is maintained in the closed state, and the piston block 21 is close to the second inner housing 143 in the chamber 113, and the gas volume of the second pressure part 118 It is much smaller than the gas volume of the first pressure part 117. In addition, the pump will pre-set the standard water pressure to be provided to the user, and define the piston block 21 at a position corresponding to the standard water pressure as the standard position.

Subsequently, referring to FIG. 14, the water tower supply pipe 91 and the household water pipe 92 (including the tap end) are opened, so that the water in the water tower supply pipe 91 can enter along the first interface 131 and pass through the first external housing portion 136 Flowing to the flow passages 116, the water located in the flow passages 116 will enter the second outer accommodating portion 157, and the water pressure provided to the water through the pipe pressure will drive the stop valve 5 into the open state and then flow through The stop valve 5 flows into the domestic water pipe 92 along the second supply port 153. In addition, part of the gas originally located in the pump, the water tower supply pipe 91 and the domestic water pipe 92 will be driven by the water pressure and discharged along the end of the domestic water pipe 92 (ie, the faucet). The water is driven by water pressure to enter the second inner portion 156 and the second pressure portion 118 along the inlet and outlet 159. The gas and water will drive the piston block 21 to move toward the base wall 111. In this embodiment, When the water pressures of the first outer accommodating portion 136, the flow passages 116, and the second outer accommodating portion 157 reach the same level, the piston block 21 stops moving. In this case, it also indicates the second content The pressure in the positioning portion 156 and the second pressure portion 118 is consistent with the pressure in the second outer containing portion 157. At this time, the piston block 21 is defined as a first equilibrium position, but has not reached the standard position.

14 and 15, when the piston block 21 does not reach the standard position and stops moving, the control unit activates the motor unit 4 according to the signal of the magnetic field sensing element, so that the motor unit 4 operates at a preset speed Operation, the motor unit 4 will continue to extract the water in the water tower supply pipe 91, and when the water flows to the flow passages 116, it will be beaten and pressurized by the impeller 43. The water pressurized by the motor unit 4 will not only flow into the The domestic water pipe 92 will also flow into the second inner portion 156 and the second pressure portion 118 to drive the piston block 21 to continue to move toward the standard position, and the magnetic field changes generated during the movement will be The sensing element 3 senses and then calculates by the control unit to obtain a pressure measurement value (water pressure). As the piston block 21 reaches the standard position, the pressure measurement value represents the first external volume The pressure of the holding part 136, the flow passages 116, the second outer holding part 157, the second inner holding part 156, and the second pressure part 118 is the standard water pressure, the signal turns off the motor unit 4, and the In this state, the water pressures of the first outer accommodating portion 136, the flow passages 116, and the second outer accommodating portion 157 are again balanced, which also means that the second inner accommodating portion 156 and the second pressure portion 118 The internal pressure is consistent with the pressure of the second outer containing portion 157, and the piston block 21 is stopped at the standard position as shown in FIG. 15. The standard position means that the pressure of the first pressure portion 117 is equal to the The second pressure part 118 adds the pressure of the second inner part 156, but the actual situation is limited by the setting of the pump. Subsequently, the faucet of the household water pipe 92 is closed. In this state, the first outer accommodating portion 136, the flow passages 116, and the second outer accommodating portion 157 will be filled with water and communicate with each other. Furthermore, Before the motor unit 4 stops running, the gear The stop valve 5 is in the open state, but as the motor unit 4 gradually stops, the stop valve 5 switches to the closed state (the position shown by the dotted line in Figure 15), but it is not limited to this. The state of the stop valve 5 will depend on the actual pressure of the first outer housing portion 136, the flow passages 116, the second outer housing portion 157, the second inner housing portion 156, and the second pressure portion 118. change.

Referring to FIG. 15, when the user turns on the faucet, the stop valve 5 will change to the opening due to the pressure difference between the second inner portion 156, the second pressure portion 118 and the second outer containing portion 157 State (the solid line part in FIG. 15), so that the water in the first outer accommodating portion 136, the flow passages 116, and the second outer accommodating portion 157 can flow naturally. In this state, For example, the pressure of the gas and water in the second inner containing portion 156 and the second pressure portion 118 can also provide a pressure of water located in the second outer containing portion 157, and the pressure can make the pressure in the first outer containing portion 157 When the water pressure of the water in the holding portion 136, the flow passages 116, and the second outer holding portion 157 can be in the constant pressure state of the standard water pressure, the motor unit 4 is not started, but as the pressure is consumed Once the piston block 21 moves toward the second inner housing 143, for example, when it reaches the first equilibrium position as shown in FIG. 14, it means that the water in the second outer housing portion 157 is The water pressure has been lower than the standard water pressure. This water pressure can also be obtained by sensing the magnetic field change of the magnetic ring 23 through the sensing element 3, so that the control unit will restart the motor unit 4, and the motor unit 4 convections The pressure applied by the water in the first outer housing portion 136, while maintaining the pressure in the second inner housing portion 156 and the second pressure portion 118, makes the piston The block 21 stops moving or moves toward the base wall 111 to return to the standard position as shown in FIG. 15, and finally, it is still located in the first outer accommodating portion 136, the flow passages 116, and the second outer accommodating portion 157 The water pressure of the water rises to the constant pressure state of the standard water pressure. Of course, the timing of starting the motor unit 4 is not limited to the above-mentioned reaching the first equilibrium position, but can be set correspondingly according to requirements.

15 and 16, when the user closes the faucet after use, the water pressure of the water in the domestic water pipe 92 will drive the stop valve 5 to move toward the second inner housing 143, and at the same time, When the motor unit 4 is still running, the water located in the first outer accommodating portion 136 will continue to flow to the second channels 161, due to the water pressure of the water from the domestic water pipe 92 and the pressure of the second channels 161 The water pressure directions are opposite and conflict, so that the water pressure of the water located in the second outer containing portion 157 gradually rises. In this state, the water pressure of the water located in the second outer containing portion 157 will pass through the The inlet and outlet 159 drive the gas and water in the second pressure portion 118 and the second inner portion 156, so that the gas and water do work on the piston block 21, thereby causing the piston block 21 to move toward the base wall 111 again, and When the piston block 21 passes through the standard position as shown in FIG. 15, the control unit will command the motor unit 4 to stop, and the water located in the second outer containing portion 157 will flow back to the first outer containing portion 136 and entering the second inner portion 156 and the second pressure portion 118, the water entering the second inner portion 156 and the second pressure portion 118 will continue to drive the piston block 21 to move toward the base wall 111, Until the pressure of the second pressure portion 118 and the second inner portion 156 is the same as the first pressure portion 117 The pressure of is in a constant pressure state, so that the piston block 21 stops at a second equilibrium position as shown in FIG. 16. In other words, the configuration of the chamber 113 and the piston unit 2 can serve as a buffer structure after the user turns off the faucet, The excess water pressure of the second outer containing portion 157 is absorbed and the water hammer generated by the water pipe is absorbed when the water is shut off, thereby ensuring the safety of the pump. In addition, the stop valve 5 can be converted to the closed state during this process, thereby closing the gap 54 to prevent the water in the domestic water pipe 92 from flowing back to the second passages 161.

Referring to Figure 14, Figure 16, and Figure 17, when the user turns on the faucet again, the water located in the domestic water pipe 92 will flow out through the faucet. At the same time, the water pressure of the water located in the second channels 161 and the second The pressure of the gas and water in the pressure portion 118 and the second inner portion 156 will push the stop valve 5 to switch to the open state so that water can continue to flow to the faucet. In this state, due to the second pressure The pressure in the portion 118 and the second inner containing portion 156 can still maintain the water in the second outer containing portion 157 at the standard water pressure. Therefore, the motor unit 4 does not need to operate, thereby saving power. Of course, when the piston block 21 moves from the second equilibrium position as shown in FIG. 16 toward the second inner casing 143 due to the consumption of gas and water in the second inner portion 156 and the second pressure portion 118 When it moves in the direction (as shown in FIG. 17) and reaches the first equilibrium position as shown in FIG. 14, the motor unit 4 will be activated again as the above-mentioned actuation signal to maintain the first outer accommodating portion 136 and isochronous flow The water pressure of the channel 116 and the water in the second outer containing portion 157.

In summary, the pump of the present invention uses the chamber 113 to accommodate the piston unit 2 and changes the position of the flow passages 116, thereby greatly reducing the overall volume. Furthermore, the piston unit 2 can be used as a buffer space when the water pressure of the water located in the second outer housing portion 157 is too high, and at the same time absorbs the water hammer generated by the water pipe when the water is turned off and the gas and gas absorbed at the same time. Water pressure can also be used as the pressure to provide water, not only to achieve safety in use but also to save electricity. In addition, since the outer surfaces of the base 11, the first outer shell 121, and the second outer shell 141 are generally arc-shaped and there is no height difference in the connection, in addition to the aforementioned convenient transportation due to the reduction in volume during the transportation process, it is also It can avoid being scratched or cut, and even because the redundant angular structure is removed, it is less likely to be restricted by the environment during the installation process, so it can indeed achieve the purpose of the invention.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

1: Housing unit

11: Pedestal

113: Room

12: The first housing part

14: The second housing part

2: Piston unit

3: Sensing parts

4: Motor unit

5: Stop valve

91: Water tower supply pipe

92: Household water pipe

L: central axis

Claims (8)

A pump suitable for pressurizing liquid. The pump includes: a housing unit, including a base, with a base wall and a surrounding wall, the base wall having a central axis, and the surrounding wall from the base wall The peripheral edge extends along the axial direction of the central axis, the surrounding wall has a first end surface adjacent to the base wall, a second end surface away from the base wall, and a first end surface extending along the axial direction and passing through the first end surface With the flow channel of the second end surface, the base wall and the surrounding wall jointly define a chamber with an opening on the opposite side of the base wall, and a first housing part located on the base adjacent to the first end surface On one side, there is a first outer casing surrounding the central axis and extending along the axial direction. The first outer casing has a first outer fixed end surface connected to the base and a first outer passage away from the base An end face, and a first accommodating space extending from the end face of the first outer opening to the first outer fixing end face and communicating with the flow channel, the first accommodating space for accommodating liquid from the outside, The second housing part is located on the side of the base adjacent to the second end surface, and has a second outer shell surrounding the central axis and extending along the axial direction, and the second outer shell has a connection to the base The second outer fixed end surface, a second outer through port end surface away from the base, and a second outer through port end surface extending through to the second outer fixed end surface and communicating the flow passage and the chamber Two accommodating spaces, the second accommodating space is used for accommodating liquid from the flow channel; a motor unit is arranged in the first accommodating space and opposite to the first The accommodating space, the fluid channel and the second accommodating space are pressurized; and a piston unit is movably arranged in the accommodating chamber in an axial direction parallel to the central axis, wherein when located in the second accommodating space When the pressure of the liquid is greater than a predetermined pressure, the piston unit will be driven to move toward the base wall in the chamber. The pump according to claim 1, wherein the piston unit includes a piston block slidably disposed in the chamber in an axial direction parallel to the central axis, and two opposite ends respectively connect the piston block and the base The wall is an elastic member that can stretch in the axial direction. The pump according to claim 2, further comprising a sensing element disposed on the surrounding wall of the base and opposite to the chamber; the piston unit further includes a magnetic ring disposed on an outer periphery of the piston block , The magnetic ring can generate a magnetic field with the movement of the piston block for being sensed by the sensing element and generating a magnetic field related to the portion located in the second accommodating space and the cavity adjacent to the second accommodating space Pressure measurement value. The pump according to claim 1, wherein the first housing component further includes a first inner housing located in the first accommodating space, and the first inner housing has a first inner housing fixed to the base An inner fixed end surface, and a first inner port end surface away from the base, and the first inner shell defines a first inner portion isolated from the flow channel; the motor unit includes a An inner motor, a rotating shaft connected to the motor and protruding between the first inner casing and the first outer casing, and an impeller disposed on the rotating shaft, the impeller facing the end surface of the first outer port And extend along a radial direction perpendicular to the axial direction. The pump according to claim 1, wherein the second housing part further includes a A second inner shell located in the second accommodating space and covering the opening of the chamber. The second inner shell has a second inner fixed end surface covering the opening of the chamber and connected to the base, and a remote The end surface of the second inner opening of the base, the second inner shell defines a second outer accommodating part communicating with the flow channel, and a second content communicating the accommodating chamber and the second outer accommodating part The second inner containing portion has a connection port adjacent to the chamber, and an inlet and outlet adjacent to the second outer containing portion and having a diameter smaller than the connection port. The pump according to claim 5, wherein the second inner casing further has a radially outward convex from the outer surface between the second inner fixed end surface and the second inner port end surface The second outer body has an outer shoulder that protrudes radially inward from the inner surface close to the inner shoulder and forms a gap with the inner shoulder; the pump further includes A check valve slidably disposed along the axial direction between the end surface of the second inner port and the end surface of the second outer port, the check valve can abut against the inner shoulder and the outer shoulder To close the gap, and then isolate the flow channel. The pump according to claim 6, wherein the stop valve includes a first seat body, a plurality of brackets, and a second seat body, the first seat body is ring-shaped, and the brackets are disposed on the first seat The body extends inward from the periphery of the first seat body, the second seat body is fixed to the brackets, and the stop valve can correspondingly abut the inner shoulder and the outer shoulder on the first seat body. The closed state for closing the gap and the open state for separating the gap for liquid to pass along the gap and the gap between two adjacent brackets are switched. The pump according to claim 1, wherein the end surface of the first outer port and the end surface of the second outer port are opposite ends on the central axis.

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