Maintenance-friendly chillers

Abstract

The present application relates to the field of refrigeration technology, and in particular to a water chiller that is easy to maintain, comprising a water tank with a hollow interior, a scraping assembly and a flushing assembly arranged in the water tank, the scraping assembly comprising a ring scraper that is vertically slidably arranged in the water tank and closely attached to the inner wall thereof, a mounting bracket arranged on the top of the water tank, a handle rotatably arranged on the mounting bracket, a winding wheel arranged on the handle, an L-shaped support arm arranged on the top of the ring scraper, a lifting rod vertically slidably penetrated on the bracket, a top block for supporting the top wall of the ring scraper arranged at the bottom end of the lifting rod, a push-up compression spring sleeved on the lifting rod between the top block and the arm, a pull wire tied to the top end of the lifting rod, the pull wire slides out from the top wall of the water tank and is wound on the winding wheel. The present application has the advantages of convenient maintenance and high maintenance quality.

Description

Technical Field

[0001] The present application relates to the field of refrigeration technology, and in particular to a water chiller that is easy to maintain. Background Art

[0002] A chiller is a refrigeration device that is widely used in various occasions where refrigeration is required. It is mainly composed of water pumps, water tanks, evaporators, condensers and other main components, and it lowers the temperature of objects through the circulation of refrigerant.

[0003] After a certain number of years of use, dirt usually accumulates on the inner wall of the water tank, so it needs to be cleaned. However, most water tanks are in one piece and cannot be disassembled, so they can only be cleaned through their water inlet and outlet. The cleaning process is inconvenient and some blind spots and corners may not be cleaned, which is obviously insufficient. Summary of the invention

[0004] In order to improve the problem that it is inconvenient to clean the dirt in the water tank and the cleaning effect is poor, the present application provides a chiller that is easy to maintain.

[0005] The present application provides a chiller that is easy to maintain and adopts the following technical solution: A chiller which is easy to maintain, comprises a water tank with a hollow interior, a scraping assembly and a flushing assembly arranged in the water tank, the scraping assembly comprising a ring scraper which is vertically slidably arranged in the water tank and is tightly attached to the inner wall thereof, a mounting bracket is arranged on the top of the water tank, a handle is rotatably arranged on the mounting bracket, a winding wheel is arranged on the handle, an L-shaped support arm is arranged on the top of the ring scraper, a lifting rod is vertically slidably penetrated through the bracket, a top block for supporting the top wall of the ring scraper is arranged at the bottom end of the lifting rod, a push-up compression spring which is sleeved on the lifting rod is supported between the top block and the support arm, a pull wire is attached to the top end of the lifting rod, the pull wire slides through the top wall of the water tank and is wound around the winding wheel.

[0006] By adopting the above technical solution, when cleaning is needed, the worker manually turns the handle so that the winding wheel can reel in the wire, and the wire pulls the lifting rod upward, and the lifting rod drives the top block to cooperate with the support arm to squeeze the push-up spring. When the push-up spring is compressed to a certain extent, the worker releases the handle, and the deformation force of the push-up spring is suddenly released, and the wire wound on the winding wheel is pulled out again, and at the same time, the top block is pushed downward to hit the ring scraper, and the ring scraper moves downward a small distance under the impact, so that the ring scraper can scrape off the dirt on the vertical inner wall of the water tank, and repeat the above operation process until the ring scraper moves to the lowest point of the vertical inner wall, and then cooperates with the flushing component to flush away the dirt scraped off, the cleaning process is relatively simple to operate and improves the cleaning quality.

[0007] Optionally, a vertical friction strip is embedded on the inner wall of the water tank, a receiving groove is provided on the outer circumferential wall of the scraper relative to the top block, a friction strip hinged in the receiving groove for pressing against the friction strip, a magnetic block for magnetically attracting the friction strip is arranged on the top block, an adjustment groove for horizontal movement of the lifting rod is provided on the support arm relative to the radial direction of the water tank, an adjustment wheel is provided on the top wall of the water tank for rotating relative to the position above the support arm, and the pull wire slides through the adjustment wheel.

[0008] By adopting the above technical solution, when the ring scraper descends to remove dirt, the positioning wheel rotates until the pull line is closest to the axis of the water tank. At this time, during the entire lifting process of the top block driving the magnetic block, the magnetic attraction between the magnetic block and the friction bar is too small, and the friction bar is always pressed against the friction bar. Therefore, when the worker manually turns the handle to wind the pull line, the push-up compression spring can be squeezed to a greater extent, and the ring scraper remains stationary through the friction between the friction bar and the friction bar. The worker manually turns the positioning wheel to make the pull line rotate to the farthest distance from the axis of the water tank. At this time, the top block drives the magnetic block to approach the friction bar. At the same time, during the entire lifting process of the magnetic block, it can always maintain a large magnetic attraction between it and the friction bar, so that the friction bar rotates and breaks away from the contact with the friction bar. At this time, the worker can lift the ring scraper to a higher place to achieve reset by turning the handle.

[0009] Optionally, the top of the water tank protrudes upward near the edge to form a ring-shaped storage cavity, and when the ring scraper is not in use, it is located in the storage cavity.

[0010] By adopting the above technical solution, the storage cavity can protect the ring scraper and the support arm, thereby reducing the possibility of contamination by dirt and ensuring the cleanliness of the scraping component itself.

[0011] Optionally, a scraper plate flush with its lowest point is rotatably arranged inside the ring scraper, and a transmission rod coaxial with it is vertically rotatably arranged inside the water tank. A lifting groove is vertically opened on the transmission rod, and the scraper plate extends into the lifting groove and slides with it. The top end of the transmission rod rotates through the top wall of the water tank and is connected to the bottom end of the handle.

[0012] By adopting the above technical solution, when the ring scraper moves downward, it can drive the scraper to move downward synchronously, and when the worker turns the handle, the handle can drive the scraper to rotate through the transmission rod. When the scraper drops to the inner bottom wall of the water tank, the rotation of the scraper can scrape off the dirt on the inner bottom wall of the water tank, further improving the comprehensiveness of dirt removal in the water tank.

[0013] Optionally, the flushing assembly includes a diversion water chamber which is arranged on the top of the water tank and is hollow inside. The top end of the transmission rod rotates through the diversion water chamber. A joint is reserved on the outer wall of the diversion water chamber, which is connected to its inner cavity and used to connect with a water supply device. A screw cap is threaded on the joint. A water hole is provided on the transmission rod. The water inlet end of the water hole is connected to the inner cavity of the diversion water chamber, and the water outlet end is connected to a nozzle arranged on the transmission rod and located in the water tank.

[0014] By adopting the above technical solution, the worker unscrews the screw cap in advance, and then connects the joint to the water supply device. During the dirt scraping process, the water supply device supplies clean water to the diversion water chamber. The clean water flows through the water hole and is then sprayed out by the nozzle to flush away the dirt on the vertical inner wall and inner bottom wall of the water tank.

[0015] Optionally, the handle is slidably matched with the winding wheel, and the bottom end of the handle is plug-fitted with the top end of the transmission rod.

[0016] By adopting the above technical solution, the handle and the transmission rod are separately arranged, so that during the process of the ring scraper descending, the handle and the transmission rod are out of contact. When the ring scraper is lowered to the lowest point, the handle is plugged into the transmission rod again, thereby reducing the load on the worker's hand during the cleaning process.

[0017] Optionally, a plurality of the nozzles are circumferentially arranged on the transmission rod, and all of the plurality of nozzles are connected to the water holes.

[0018] By adopting the above technical solution, multiple nozzles greatly increase the flushing area, which is beneficial to improving the flushing quality of dirt.

[0019] Optionally, the plug-in fitting portion between the bottom end of the handle and the top end of the transmission rod is in a flat key shape.

[0020] By adopting the above technical solution, the flat key-shaped plug-in fit ensures that the handle can drive the transmission rod to rotate synchronously, avoiding slipping.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. When cleaning is required, the worker manually turns the handle to allow the winding wheel to reel in the wire, and the wire pulls the lifting rod upward, which drives the top block to cooperate with the support arm to squeeze the push-up spring. When the push-up spring is compressed to a certain extent, the worker releases the handle, and the deformation force of the push-up spring is suddenly released. The wire wound on the winding wheel is pulled out again, and at the same time, the top block is pushed downward to hit the ring scraper. The ring scraper moves downward a short distance under the impact, so that the ring scraper can scrape off the dirt on the vertical inner wall of the water tank. Repeat the above operation process until the ring scraper moves to the lowest point of the vertical inner wall. After that, cooperate with the flushing component to flush away the dirt. The cleaning process is relatively simple to operate and improves the cleaning quality; 2. When the ring scraper descends to scrape away dirt, the positioning wheel rotates until the pull line is closest to the axis of the water tank. At this time, during the entire lifting process of the top block driving the magnet, the magnetic attraction between the magnet and the friction strip is too small, and the friction strip is always pressed against the friction strip. Therefore, when the worker manually turns the handle to wind the pull line, the push-up compression spring can be squeezed to a greater extent, and the ring scraper remains stationary through the friction between the friction strip and the friction strip. The worker manually turns the positioning wheel to make the pull line rotate to the farthest distance from the axis of the water tank. At this time, the top block drives the magnet to approach the friction strip. At the same time, during the entire lifting process of the magnet, it can always maintain a large magnetic attraction between the friction strip and the friction strip, so that the friction strip rotates and breaks away from the contact with the friction strip. At this time, the worker can lift the ring scraper to a higher place to reset it by turning the handle; 3. When the ring scraper moves downward, it can drive the scraper to move downward synchronously, and when the worker turns the handle, the handle can drive the scraper to rotate through the transmission rod. When the scraper drops to the inner bottom wall of the water tank, the rotation of the scraper can scrape off the dirt on the inner bottom wall of the water tank, further improving the comprehensiveness of dirt removal in the water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0023] Figure 2 It is a cross-sectional view showing the positional relationship among the transmission rod, the scraper and the handle in the embodiment of the present application.

[0024] Figure 3 yes Figure 2 Enlarged view of part A.

[0025] Figure 4 yes Figure 2 Enlarged view of part B.

[0026] Explanation of the reference numerals in the accompanying drawings: 1. water tank; 21. ring scraper; 211. accommodating groove; 22. mounting bracket; 23. handle; 24. winding wheel; 25. support arm; 251. adjusting groove; 26. lifting rod; 27. top block; 28. push-up spring; 29. ​​pull wire; 3. friction strip; 4. friction resistance strip; 5. magnetic block; 6. adjusting wheel; 7. storage chamber; 8. scraper; 9. transmission rod; 91. lifting groove; 92. water hole; 10. water diversion chamber; 11. joint; 12. screw cap; 13. nozzle. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-4 This application is described in further detail.

[0028] The embodiment of the present application discloses a chiller that is easy to maintain.

[0029] Reference Figure 1The chiller which is easy to maintain includes a water tank 1 which is hollow and cylindrical. After the water tank 1 is used for a long time, dirt will be attached to the vertical inner wall and the inner bottom wall. In order to facilitate the cleaning of the dirt, a scraping component and a flushing component are arranged on the water tank 1.

[0030] Reference Figure 2 and Figure 3 The scraping assembly includes a mounting bracket 22 welded to the top of the water tank 1, a winding wheel 24 is rotatably arranged on the mounting bracket 22, and a handle 23 is coaxially slidably penetrated on the winding wheel 24.

[0031] Reference Figure 2 and Figure 3 A hydrophilic aluminum foil is adhered to the inner wall of the water tank 1, and a ring scraper 21 is vertically slidably fitted thereon. Two L-shaped arms 25 are welded to the top of the ring scraper 21, and the two arms 25 are symmetrically distributed about the axis of the water tank 1. Two pull wires 29 are wound on the winding wheel 24, and one pull wire 29 corresponds to one arm 25.

[0032] Reference Figure 2 and Figure 3 A positioning groove 251 is radially provided on the support arm 25 relative to the water tank 1, and a lifting rod 26 is provided in the positioning groove 251 for horizontal sliding cooperation and vertical lifting cooperation, and the top end of the lifting rod 26 is connected to the corresponding pull line 29.

[0033] The bottom end of the lifting rod 26 is integrally formed with a top block 27 for impacting the top wall of the ring scraper 21, and a push-up spring 28 is supported between the top block 27 and the support arm 25. The push-up spring 28 is sleeved on the lifting rod 26, and a magnetic block 5 is embedded at the bottom of the top block 27.

[0034] Reference Figure 2 and Figure 3 A positioning wheel 6 is rotatably provided on the top wall of the water tank 1 relative to the position above the support arm 25, and the pull wire 29 slides through the positioning wheel 6. There is a distance between the position on the positioning wheel 6 where the pull wire 29 is provided and the axis of the positioning wheel 6.

[0035] Reference Figure 2 and Figure 3 A vertical friction strip 3 is embedded on the inner wall of the water tank 1, and a receiving groove 211 is opened on the outer circumferential wall of the ring scraper 21 at a position relative to the top block 27. A friction strip 4 for pressing against the friction strip 3 is hinged in the receiving groove 211, and the friction strip 4 is magnetically attracted to the magnetic block 5.

[0036] Reference Figure 2 and Figure 3When cleaning is needed, the worker first turns the adjusting wheel 6 to adjust the cable 29 to the axis close to the water tank 1. Then the handle 23 is manually turned to make the winding wheel 24 reel the cable 29, and the cable 29 pulls the lifting rod 26 to move upward, and the lifting rod 26 drives the top block 27 to cooperate with the support arm 25 to squeeze the push spring 28.

[0037] At this time, since the distance between the magnetic block 5 and the friction strip 4 is relatively far, the magnetic attraction between the magnetic block 5 and the friction strip 4 is very small and almost non-existent. Therefore, during the lifting and lowering process of the lifting rod 26, the friction strip 4 is always pressed against the friction strip 3, and the friction force between the friction strip 4 and the friction strip 3 is relatively large. During the compression deformation of the push-up pressure spring 28, the ring scraper 21 remains stationary.

[0038] When the push-up compression spring 28 is compressed to a certain extent, the worker releases the handle 23, and the deformation force of the push-up compression spring is instantly released. The pull wire 29 wound on the winding wheel 24 is pulled out again, and at the same time, the push-up block 27 is pushed downward to hit the ring scraper 21. The friction between the friction bar 4 and the friction bar 3 does not hinder the downward movement of the ring scraper 21, so the ring scraper 21 moves downward a small distance under the impact.

[0039] The above operation process is repeated until the annular scraper 21 moves to the lowest point of the vertical inner wall, so that the annular scraper 21 can scrape off the dirt on the vertical inner wall of the water tank 1.

[0040] Reference Figure 2 , Figure 3 and Figure 4 A scraper 8 flush with its lowest point is rotatably mounted inside the ring scraper 21, and a transmission rod 9 is coaxially rotatably arranged inside the water tank 1. A lifting groove 91 is vertically opened on the transmission rod 9. The scraper 8 extends into the lifting groove 91 and slides with it. The top end of the transmission rod 9 rotates to pass through the top wall of the water tank 1 and is plugged into and matched with the bottom end of the handle 23. The plug-in matching part between the bottom end of the handle 23 and the top end of the transmission rod 9 is in a flat key shape.

[0041] Reference Figure 2 , Figure 3 and Figure 4 During the descent of the scraper blade 21, the scraper plate 8 is driven to descent synchronously, and the handle 23 is disengaged from the transmission rod 9. When the scraper plate 8 is lowered to be in close contact with the inner bottom wall of the water tank 1, the worker manually presses the handle 23 downward to make the handle 23 and the transmission rod 9 engage with each other.

[0042] Afterwards, when the worker manually rotates the handle 23 again, the transmission rod 9 will drive the scraper 8 to rotate synchronously, so that the scraper 8 can scrape off the dirt on the bottom wall of the water tank 1.

[0043] Reference Figure 2 , Figure 3 and Figure 4After scraping, the worker manually turns the adjusting wheel 6 so that the pull wire 29 rotates to the farthest point from the water tank 1, and the lifting rod 26 moves horizontally in the adjusting groove 251, thereby driving the top block 27 and the magnetic block 5 to move to the top of the friction bar 4.

[0044] At this time, the distance between the magnetic block 5 and the friction strip 4 is small. During the lifting and lowering of the top block 27, a large magnetic attraction force can be maintained between the magnetic block 5 and the friction strip 4, so that the friction strip 4 rotates, breaks away from the contact with the friction strip 3 and presses against the top wall of the accommodating groove 211.

[0045] Reference Figure 2 , Figure 3 and Figure 4 When the worker turns the handle 23 to reel in the pull wire 29, the pull wire 29 can drive the ring scraper 21 to move up and reset. The top of the water tank 1 near the edge bulges upward to form a ring-shaped storage cavity 7, so that when the ring scraper 21 is not in use, the ring scraper 21 can be stored in the storage cavity 7.

[0046] Reference Figure 2 , Figure 3 and Figure 4 The flushing assembly includes a diversion water chamber 10 which is welded to the top of the water tank 1 and is hollow inside. The top end of the transmission rod 9 rotates through the diversion water chamber 10. A joint 11 which communicates with its inner cavity and is used to communicate with a water supply device is reserved on the outer wall of the diversion water chamber 10. A screw cap 12 is threadedly connected to the joint 11. The water supply device can be a faucet or a water pump in the prior art.

[0047] Reference Figure 4 A water hole 92 is provided on the transmission rod 9, the water inlet end of the water hole 92 is communicated with the inner cavity of the diversion water chamber 10, and the water outlet end is connected to a nozzle 13 which is threadedly connected to the transmission rod 9 and located in the water tank 1, and a plurality of nozzles 13 are distributed circumferentially on the transmission rod 9.

[0048] Reference Figure 4 The worker unscrews the screw cap 12 in advance, and then connects the joint 11 to the water supply device. During or after the dirt scraping work, the water supply device supplies clean water to the diversion water chamber 10. The clean water flows through the water hole 92 and is then sprayed out by each nozzle 13, thereby flushing away the dirt on the vertical inner wall and the inner bottom wall of the water tank 1.

[0049] The implementation principle of a chiller that is easy to maintain in the embodiment of the present application is as follows: When cleaning is needed, the worker first turns the adjusting wheel 6 to adjust the cable 29 to the axis close to the water tank 1. Then the handle 23 is manually turned to make the winding wheel 24 reel the cable 29, and the cable 29 pulls the lifting rod 26 to move upward, and the lifting rod 26 drives the top block 27 to cooperate with the support arm 25 to squeeze the push spring 28.

[0050] At this time, since the distance between the magnetic block 5 and the friction strip 4 is relatively far, the magnetic attraction between the magnetic block 5 and the friction strip 4 is very small. Therefore, during the lifting and lowering process of the lifting rod 26, the friction strip 4 is always pressed against the friction strip 3, and the friction force between the friction strip 4 and the friction strip 3 is relatively large. During the compression deformation of the push-up pressure spring 28, the ring scraper 21 remains stationary.

[0051] When the push-up compression spring 28 is compressed to a certain extent, the worker releases the handle 23, and the deformation force of the push-up compression spring is instantly released. The pull wire 29 wound on the winding wheel 24 is pulled out again, and at the same time, the top block 27 is pushed downward to hit the annular scraper 21. The friction between the friction bar 4 and the friction bar 3 does not hinder the downward movement of the annular scraper 21. Therefore, the annular scraper 21 moves downward a small distance under the impact, and the annular scraper 21 drives the scraper 8 to descend synchronously.

[0052] The above operation process is repeated until the annular scraper 21 moves to the lowest point of the vertical inner wall, so that the annular scraper 21 can scrape off the dirt on the vertical inner wall of the water tank 1.

[0053] Afterwards, the worker manually presses the handle 23 downward, so that the handle 23 is plugged into the transmission rod 9. When the worker manually turns the handle 23 again, the transmission rod 9 drives the scraper 8 to rotate synchronously, so that the scraper 8 can scrape the dirt on the bottom wall of the water tank 1.

[0054] At this time, the water supply device supplies clean water into the diverting water chamber 10 , and the clean water flows through the water holes 92 and is then sprayed out by each nozzle 13 , thereby flushing away dirt on the vertical inner wall and the inner bottom wall of the water tank 1 .

[0055] The worker manually rotates the adjusting wheel 6 again, so that the pull wire 29 rotates to the farthest distance from the water tank 1, and the lifting rod 26 moves horizontally in the adjusting groove 251, thereby driving the top block 27 and the magnetic block 5 to move to just above the friction bar 4.

[0056] At this time, the distance between the magnetic block 5 and the friction strip 4 is small. During the lifting and lowering of the top block 27, the magnetic block 5 and the friction strip 4 can maintain a large magnetic attraction, so that the friction strip 4 rotates, breaks away from the contact with the friction strip 3 and presses against the top wall of the receiving groove 211. When the worker turns the handle 23 to reel the wire 29, the wire 29 can drive the scraper 21 to move up to reset, so that the scraper 21 is stored in the storage chamber 7 again.

[0057] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A water chiller that is easy to maintain, comprising a water tank (1) with a hollow interior, a scraping assembly and a flushing assembly arranged in the water tank (1), characterized in that: The scraping assembly comprises a ring scraper (21) which is vertically slidably arranged in the water tank (1) and is in close contact with the inner wall of the water tank (1); a mounting bracket (22) is arranged on the top of the water tank (1); a handle (23) is rotatably arranged on the mounting bracket (22); a winding wheel (24) is arranged on the handle (23); an L-shaped support arm (25) is arranged on the top of the ring scraper (21); a lifting rod (26) is vertically slidably penetrated through the bracket; a top block (27) for supporting the top wall of the ring scraper (21) is arranged at the bottom end of the lifting rod (26); a push-up compression spring (28) sleeved on the lifting rod (26) is supported between the top block (27) and the support arm (25); a pull wire (29) is tied to the top end of the lifting rod (26); the pull wire (29) slides out from the top wall of the water tank (1) and is wound around the winding wheel (24).

2. The easy-to-maintain water chiller according to claim 1, characterized in that: A vertical friction strip (3) is embedded on the inner wall of the water tank (1); a receiving groove (211) is provided on the outer circumferential wall of the annular scraper (21) at a position relative to the top block (27); a friction strip (4) for pressing against the friction strip (3) is hinged in the receiving groove (211); a magnetic block (5) for magnetically attracting the friction strip (4) is arranged on the top block (27); an adjustment groove (251) for horizontal movement of the lifting rod (26) is provided on the support arm (25) relative to the radial direction of the water tank (1); an adjustment wheel (6) is rotatably provided on the top wall of the water tank (1) relative to the position above the support arm (25); and the pull wire (29) slides through the adjustment wheel (6).

3. The easy-to-maintain water chiller according to claim 2, characterized in that: The top of the water tank (1) protrudes upward near the edge to form a ring-shaped storage cavity (7). When the ring scraper (21) is not in use, it is located in the storage cavity.

4. The easy-to-maintain water chiller according to claim 1, characterized in that: A scraper (8) is rotatably arranged in the annular scraper (21) and is flush with the lowest point thereof. A transmission rod (9) is vertically rotatably arranged in the water tank (1) and is coaxial with the annular scraper (21). A lifting groove (91) is vertically provided on the transmission rod (9). The scraper (8) extends into the lifting groove (91) and is slidably matched with the lifting groove. The top end of the transmission rod (9) is rotatably passed through the top wall of the water tank (1) and is connected to the bottom end of the handle (23).

5. The chiller easy to maintain according to claim 4, characterized in that: The flushing assembly comprises a diverter water chamber (10) which is arranged on the top of the water tank (1) and is hollow inside. The top end of the transmission rod (9) rotates through the diverter water chamber (10). A joint (11) which communicates with the inner cavity of the diverter water chamber (10) and is used to communicate with a water supply device is reserved on the outer wall of the diverter water chamber (10). A screw cap (12) is threadedly connected to the joint (11). A water hole (92) is provided on the transmission rod (9). The water inlet end of the water hole (92) communicates with the inner cavity of the diverter water chamber (10), and the water outlet end is connected to a nozzle (13) which is arranged on the transmission rod (9) and located in the water tank (1).

6. The easy-to-maintain water chiller according to claim 4, characterized in that: The handle (23) is slidably matched with the winding wheel (24), and the bottom end of the handle (23) is plug-fitted with the top end of the transmission rod (9).

7. The easy-to-maintain water chiller according to claim 5, characterized in that: A plurality of the spray heads (13) are circumferentially arranged on the transmission rod (9), and all of the plurality of spray heads (13) are in communication with the water passage hole (92).

8. The easy-to-maintain water chiller according to claim 4, characterized in that: The plug-in fitting portion between the bottom end of the handle (23) and the top end of the transmission rod (9) is in a flat key shape.

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