Low noise compressor for cold store refrigeration

Abstract

This invention relates to the field of compressor technology, specifically to a low-noise compressor for cold storage refrigeration. It includes a support frame, a control box, and an arched frame mounted on the support frame to support the compressor body. The compressor body has a base frame at its bottom. A gas delivery mechanism is symmetrically arranged on the protective cover of the compressor body. The base frame is fixedly installed between the two arched frames on either side, and an air cushion communicating with the gas delivery mechanism is installed between the base frame and the arched frames. Stopping mechanisms extend from both sides of the bottom of the air cushion. Depending on the operating state of the compressor body, the gas delivery mechanism allows for the inflation or de-inflation of the air cushion, switching between a flexible or rigid connection between the base frame and the partition. When the air cushion inflates, it assists the rubber pad in providing auxiliary support to the base frame. When the air cushion deflates, the stop rod locks the limit rod, thereby restricting the movement of the limit rod, reducing the pressure on the rubber pad and extending its service life.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more specifically, to a low-noise compressor for cold storage refrigeration. Background Technology

[0002] The refrigeration compressor is the core and heart of the refrigeration system. The capacity and characteristics of the compressor determine the capacity and characteristics of the refrigeration system. The working chamber of the compressor is the cylinder, which uses the piston to compress air by moving inside the cylinder.

[0003] The refrigeration compressor is powered by an electric motor or a diesel engine. For example, the electric motor converts the rotary motion into the reciprocating linear motion of the piston through a transmission mechanism such as a coupling, crankshaft, and connecting rod, thereby driving the piston to move.

[0004] In this process, to reduce vibration caused by piston movement, shock-absorbing pads are usually placed between the compressor and the support frame to reduce noise generated by friction between components. However, for mobile cold storage, bumpy roads are encountered during transportation. Since the compressor and cold storage are in contact through the shock-absorbing pads, the pressure on the pads increases on bumpy roads. In addition, the shock-absorbing pads age and crack due to prolonged pressure, causing loosening between the equipment and exacerbating noise generation. Summary of the Invention

[0005] This invention provides a low-noise compressor for cold storage refrigeration. Depending on the working state of the compressor body, the compressor can be used to pressurize or depress the air cushion through an air delivery mechanism, thereby switching between the flexible or rigid connection state between the base frame and the partition. This solves the problem mentioned in the background art, namely, the increased pressure on the shock-absorbing pad on bumpy roads, which affects its service life.

[0006] To achieve the above objectives, the low-noise compressor for cold storage refrigeration includes a support frame, a control box, and an arched frame mounted on the support frame to support the compressor body. The compressor body has a base frame at its bottom, and the arched frame is connected to the arched frame by several bolts and rubber pads. A gas delivery mechanism is symmetrically arranged on the protective cover of the compressor body. A base frame is fixedly arranged between the two arched frames on both sides. A limiting rod that can slide in the longitudinal direction is provided at the bottom of the base frame, and an air cushion communicating with the gas delivery mechanism is provided between the bottom of the base frame and the arched frame. Stopping mechanisms extend from both sides of the bottom of the air cushion.

[0007] When the compressor body is working, the rotation of the rotor inside the compressor body is used as power to drive the gas delivery mechanism to deliver gas into the air cushion. The air cushion expands to release the limit rod and form auxiliary support for the base frame. During transfer, the stop mechanism limits the limit rod to switch the connection state between the base frame and the partition according to the working state of the compressor body.

[0008] The stopping mechanism includes a stopping rod that can pass through the limiting rod, and the limiting rod corresponding to the stopping rod has a limiting hole, and the stopping rod is located above the arched frame.

[0009] A push-pull rod is fixedly installed below the stop rod, through which the arch frame passes. A stop block is fixedly installed on the push-pull rod, and a support spring is elastically connected between the stop block and the inner wall of the arch frame.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] In this low-noise compressor used for cold storage refrigeration, the air supply mechanism can be used to inflate or stop the air supply to the air cushion according to the working status of the compressor body, thereby switching between the flexible or rigid connection state between the base frame and the partition. When the air cushion expands, it assists the rubber pad in providing auxiliary support to the base frame. When the air cushion deflates, the stop rod locks the limit rod, thereby limiting the movement of the limit rod, thus reducing the pressure of the equipment on the rubber pad and improving the service life of the rubber pad. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0013] Figure 2 This is a schematic diagram showing the connection state between the base frame and the partition plate of the present invention;

[0014] Figure 3 This is a schematic diagram of the gas delivery mechanism and the stop mechanism of the present invention;

[0015] Figure 4 This is a schematic diagram illustrating the reciprocating movement principle of the reciprocating rod of the present invention;

[0016] Figure 5 This is a schematic diagram of the air cushion supporting the base frame according to the present invention;

[0017] Figure 6 This is a schematic diagram of the bearing pad and auxiliary pad structure of the present invention;

[0018] Figure 7 This is a schematic diagram illustrating the baffle movement principle of the present invention;

[0019] Figure 8 This is a schematic diagram of the connection structure between the baffle and the bearing pad of the present invention;

[0020] Figure 9 This is a schematic diagram illustrating the moving principle of the bearing pad of the present invention;

[0021] Figure 10 This is a schematic diagram of the release of the limiting rod according to the present invention;

[0022] Figure 11 This is a schematic diagram of the stop rod state according to the present invention.

[0023] The meanings of the labels in the diagram are as follows:

[0024] 100. Support frame; 101. Control box; 102. Rubber pad;

[0025] 110. Compressor body; 111. Base frame; 112. Arched frame; 113. Partition plate; 114. Limiting rod; 115. Limiting hole;

[0026] 120. Air cushion;

[0027] 130. Gas delivery mechanism; 131. Gas cylinder; 132. Reciprocating rod; 133. Gas delivery pipe; 134. Inlet pipe; 135. Gas supply pipe; 136. Compression spring;

[0028] 140. Stopping mechanism; 141. Stopping rod; 142. Push-pull rod; 143. Stop block; 144. Support spring; 145. Outer tube;

[0029] 150. Baffle; 151. Bearing pad; 152. Auxiliary pad; 153. Return spring. Detailed Implementation

[0030] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0031] Therefore, in response to the aforementioned problem of increased pressure on rubber pad 102 during cold storage transfer, this invention provides a low-noise compressor for cold storage refrigeration, as shown in the reference. Figures 1-2As shown, the system includes a support frame 100, a control box 101, and an arched frame 112 mounted on the support frame 100 to support the compressor body 110. The compressor body 110 has a base frame 111 at its bottom. The arched frame 112 is connected to the base frame 112 by several bolts and rubber pads 102. Each rubber pad 102 is penetrated by a corresponding bolt. The rubber pads 102 are respectively arranged under the four corners of the base frame 111. By locking with bolts, the compressor body 110 and the arched frame 112 are flexibly connected, so as to reduce the wear of the base frame 111 and the arched frame 112 during operation and reduce noise generation.

[0032] Since the compressor is powered by an electric motor or diesel engine, for example, the rotor of the electric motor rotates and transmits power to the piston through a transmission mechanism such as a coupling, crankshaft, and connecting rod, converting the rotational motion into the reciprocating linear motion of the piston, thereby driving the piston to move. If a shock-absorbing pad is installed between the compressor and the support frame 100 to reduce the noise generated by friction between the components, then during the transportation of the cold storage, it will encounter bumpy roads. Since the compressor and the cold storage are in contact through the shock-absorbing pad, the pressure of the compressor on the shock-absorbing pad is likely to increase. In addition, the shock-absorbing pad will age and crack due to prolonged pressure, which will further aggravate the noise generation.

[0033] Therefore, based on Figure 2 Based on this, and then combined Figure 3 As shown, a gas delivery mechanism 130 is symmetrically arranged on the protective cover of the compressor body 110, and a base frame 111 is fixedly arranged between the two arched frames 112. The bottom of the base frame 111 is provided with a longitudinal direction (wherein, the longitudinal direction is referenced). Figure 5 The limiting rod 114 slides on the bottom (as indicated by the middle arrow), and an air cushion 120 communicating with the air delivery mechanism 130 is provided between the bottom frame 111 and the arched frame 112. Stopping mechanisms 140 extend from both sides of the bottom of the air cushion 120. In this way, when the compressor body 110 is working, the rotation of the rotor inside the compressor body 110 is used as power to drive the air delivery mechanism 130 to deliver air into the air cushion 120. The air cushion 120 expands to release the limiting rod 114 and form auxiliary support for the bottom frame 111. During transfer, the stopping mechanism 140 limits the limiting rod 114 to switch the connection state between the bottom frame 111 and the partition plate 113 according to the working state of the compressor body 110.

[0034] Specifically, the above working process is divided into two stages: the working state and the stopping state of the compressor body 110. The working conditions of the compressor body 110 in the working state are shown below for reference. Figure 3 , Figure 4As shown, the gas delivery mechanism 130 includes a gas cylinder 131 fixed to a protective cover, and a reciprocating rod 132 sleeved inside the gas cylinder 131. One end of the reciprocating rod 132 is located inside the gas cylinder 131, and the other end is located inside the protective cover. The gas delivery mechanism 130 also includes a gas delivery pipe 133 on the opposite side of the reciprocating rod 132. The gas delivery pipe 133 is connected to the air cushion 120. In fact, the gas delivery pipe 133 first passes through... Figure 3 The partition 113 in the middle is then connected to the air cushion 120;

[0035] Secondly, to deliver gas to the air cushion 120, a rotating cam is also provided on the rotor, which contacts one end of the reciprocating rod 132. When the rotating cam rotates, it pushes the distal end of the reciprocating rod 132 to move within the air delivery cylinder 131. At this time, since the two ends of the air delivery cylinder 131 are respectively connected to the inlet pipe 134 and the supply pipe 135, the supply pipe 135 is located inside the protective cover, and the inlet pipe 134 is located outside the protective cover, and the inlet pipe 134 is connected to the air delivery cylinder 131... Each air pipe 133 is equipped with a one-way valve. When the reciprocating rod 132 pushes the gas out of the air cylinder 131, the one-way valve in the air inlet pipe 134 is in the closed state, while the one-way valve in the air delivery pipe 133 is in the open state. The one-way valve is used to guide the gas in the air cylinder 131 to the air cushion 120. During this process, the gas in the protective cover enters the air cylinder 131 through the air supply pipe 135 to ensure the smooth movement of the reciprocating rod 132.

[0036] Conversely, when the reciprocating rod 132 moves in the direction of the reciprocating rod 132, a compression spring 136 is provided inside the air cylinder 131 that abuts against one end of the reciprocating rod 132. The compression spring 136 is compressed in the above process, and the elastic potential energy of the compression spring 136 pushes the reciprocating rod 132 to move in the opposite direction. The one-way valve body in the air supply pipe 133 is closed, and the one-way valve body in the air inlet pipe 134 is opened. External gas enters the air cylinder 131 through the air inlet pipe 134, and then the above process is repeated to continuously supply gas into the air cushion 120.

[0037] As the gas inside the air cushion increases, reference Figure 5 As shown, the air cushion 120 gradually expands upward to support the base frame 111. At this time, in conjunction with the use of the rubber pad 102 and the supporting effect of the air cushion 120, the connection between the base frame 111 and the partition 113 is a flexible connection. During the operation of the compressor body 110, the air cushion 120 can absorb the energy generated by vibration through its own deformation, reduce the impact force transmitted to the partition 113, reduce the pressure of the compressor body 110 on the rubber pad 102, and improve the service life of the rubber pad 102.

[0038] Further reference Figure 7 , Figure 8 , Figure 9As shown, the two sides of the partition 113 are bent upward at 90 degrees and used to intercept the two sides of the air cushion 120, limiting the overflow of the air cushion 120 when it expands in volume. In normal condition, its top is lower than the lower edge of the base frame 111, preventing the base frame 111 from colliding with the partition 113 due to shaking when the base frame 111 is working, thereby avoiding the collision between the two. Secondly, when the air cushion 120 is inflated, the two partitions 113 can limit its outward overflow, so that the expanded air cushion 120 supports the base frame 111 upward.

[0039] Furthermore, the other two sides of the partition 113 are open, and a baffle 150 is provided at the opening. The baffle 150 abuts against the air cushion 120, and a return spring 153 is elastically fixed to the side of the baffle 150 away from the air cushion 120. On the other hand, a bearing pad 151 is slidably provided in the middle of the baffle 150 (here, "sliding" refers to movement in the longitudinal direction). An auxiliary pad 152 fixed to the arched frame 112 is provided below the bearing pad 151. The bearing pad 151 supports the upper base frame 111 by sliding along the inclined surface of the auxiliary pad 152. This part of the working principle The principle is as follows: When the air cushion 120 is inflated, its volume increases. Due to the restriction of the two side partitions 113 and the obstruction of the base frame 111 at the top of the air cushion 120, the air cushion 120 overflows to the opening. During this process, the air cushion 120 overcomes the elastic potential energy of the return spring 153 to drive the baffle 150 to move laterally. At the same time, the bearing pad 151 slides under the action of the inclined surface of the auxiliary pad 152. The bearing pad 151 moves in two directions: first, the longitudinal height increases, which is due to the slope of the inclined surface; second, the lateral displacement increases.

[0040] in this way, Figure 9 The image shows the direction of movement of the support pad 151. The support pad 151 moves to the bottom of the base frame 111 and its height is raised. Together with the increased volume of the air cushion 120 and the rubber pad 102, it supports the entire base frame 111 and provides support for the base frame 111 from multiple directions, thereby reducing the pressure on the rubber pad 102 and improving its service life.

[0041] Subsequently, when the equipment stops working, the air cushion 120 has several small holes that allow the internal gas to slowly escape, causing the volume of the air cushion 120 to gradually shrink. Under the elastic action of the return spring 153, the baffle 150 is pushed back to its original position. At the same time, the bearing pad 151 returns to the state of matching the inclined surface of the auxiliary pad 152 under the action of gravity.

[0042] It should be noted that, Figure 7The diagram only shows the state of the baffle 150 in the length direction. In order to prevent the air cushion 120 from being compressed and overflowing due to gaps between the baffle 113 and the baffle 150, the auxiliary pad 152 can be set to fit against the baffle 113 in the length direction, so that the entire air cushion 120 is confined within the baffle 113. This can work with the bent part of the baffle 113 to restrict the expansion of the air cushion 120, so that the increased volume of the air cushion 120 can maximize its function, that is, to support the base frame 111 and push the baffle 150 to move.

[0043] In addition, combined Figure 6 As shown, to ensure that the bearing pad 151 can move normally, the bearing pad 151 is shorter than the distance between the two limiting rods 114 in the length direction. Figure 6 The length is shown as W, so that the bearing pad 151 can move between the two limiting rods 114, preventing the bearing pad 151 from moving laterally and making contact with the limiting rods 114.

[0044] The compressor body 110 has another working state: a stopped state. Let's return to... Figure 3 and combined Figure 10 , Figure 11 As shown, the stopping mechanism 140 includes a stopping rod 141 that can pass through the limiting rod 114. The limiting rod 114 corresponding to the stopping rod 141 has a limiting hole 115. Each limiting hole 115 corresponds to a stopping rod 141, and the stopping rod 141 is located above the arch frame 112. Thus, when the equipment stops working, a push-pull rod 142 that passes through the arch frame 112 is fixedly installed below the stopping rod 141. A stop block 143 is fixedly installed on the push-pull rod 142. A support spring 144 is elastically connected between the stop block 143 and the inner wall of the arch frame 112. Under normal conditions, the support spring 144 is in a tightened state, that is, the stopping rod 141 is inserted into the limiting hole 115 to limit the downward movement of the limiting rod 114.

[0045] Furthermore, the end of the push-pull rod 142 is fitted with an outer tube 145 that communicates with the air cushion 120. The end of the outer tube 145 is open. Therefore, when the air cushion 120 is in an inflated state, the end of the stop rod 141 in the initial state is inserted into the limiting hole 115, and the limiting rod 114 is in a locked state. Then, the pressure inside the outer tube 145 increases, causing the push-pull rod 142 to move laterally against the elastic potential energy of the support spring 144. Figure 11The diagram shows two states of the stop rod 141: the locked state indicates that the equipment is stopped, and the released state indicates that the equipment is working normally. When the limit rod 114 is in the locked state, the pressure of the equipment is transmitted to the arch frame 112 through the stop rod 141. This prevents the pressure of the equipment when it is not working from being applied to the rubber pad 102, thus protecting the rubber pad 102 and preventing the entire cold storage from exerting continuous downward pressure on the rubber pad 102 during the transfer process, which would affect its service life.

[0046] Conversely, during the transfer process, the limit rod 114 may also be in an upward bumping state. At this time, the stop rod 141, together with the bolt through which the rubber pad 102 passes, further restricts the limit rod 114 to prevent it from moving outward.

[0047] It should also be understood that, as the equipment operates for extended periods, it continuously supplies gas into the air cushion 120, causing the air cushion 120 to gradually increase in volume. Although small holes exist, the amount of gas that can be released through these holes in a short period is limited. Therefore, to prevent the air cushion 120 from continuously increasing in volume, a pressure relief valve is connected to the bottom of the air cushion 120. When the air pressure inside the air cushion 120 reaches the set pressure, the excess gas inside the air cushion 120 is released from the pressure relief valve, preventing the air cushion 120 from continuously increasing in volume and affecting the normal use of other equipment.

[0048] In summary, the compressor body 110 operates according to its working state. The air supply mechanism 130 is used to inflate or de-inflate the air cushion 120, thereby switching between the flexible and rigid connection between the base frame 111 and the partition plate 113. When the air cushion 120 expands, it assists the rubber pad 102 in providing auxiliary support to the base frame 111. When the air cushion 120 deflates, the stop rod 141 locks the limit rod 114, thereby limiting the movement of the limit rod 114. This reduces the pressure of the equipment on the rubber pad 102 and improves the service life of the rubber pad 102.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-noise compressor for cold storage refrigeration, comprising a support frame (100), a control box (101), and an arched frame (112) mounted on the support frame (100) for supporting the compressor body (110), wherein the compressor body (110) has a base frame (111) at its bottom, and the arched frame (112) is connected to the arched frame (112) by a plurality of bolts and rubber pads (102), characterized in that: A gas delivery mechanism (130) is symmetrically arranged on the protective cover of the compressor body (110). A base frame (111) is fixedly arranged between the two arched frames (112). A limiting rod (114) that can slide in the longitudinal direction is provided at the bottom of the base frame (111). An air cushion (120) communicating with the gas delivery mechanism (130) is provided between the bottom of the base frame (111) and the arched frame (112). A stop mechanism (140) extends from both sides of the bottom of the air cushion (120). When the compressor body (110) is working, the rotation of the rotor inside the compressor body (110) is used as power to drive the gas delivery mechanism (130) to deliver gas into the air cushion (120). The air cushion (120) expands to release the limiting rod (114) and form auxiliary support for the base frame (111). During transfer, the stop mechanism (140) limits the limiting rod (114) so ​​as to switch the connection state between the base frame (111) and the partition plate (113) according to the working state of the compressor body (110).

2. The low-noise compressor for cold storage refrigeration according to claim 1, characterized in that: The gas delivery mechanism (130) includes a gas cylinder (131) fixed on a protective cover, and a reciprocating rod (132) sleeved inside the gas cylinder (131). The gas delivery mechanism (130) also includes a gas delivery pipe (133) on the side opposite to the reciprocating rod (132), and the gas delivery pipe (133) is connected to the air cushion (120). The two ends of the gas cylinder (131) are respectively connected to an air inlet pipe (134) and an air supply pipe (135). The air supply pipe (135) is located inside the protective cover, and the air inlet pipe (134) is located outside the protective cover. Both the air inlet pipe (134) and the air supply pipe (133) are equipped with one-way valves. The one-way valve in the air supply pipe (133) is responsible for guiding the gas in the gas cylinder (131) to the air cushion (120), and the one-way valve in the air inlet pipe (134) is responsible for guiding the external gas to the gas cylinder (131).

3. The low-noise compressor for cold storage refrigeration according to claim 2, characterized in that: A compression spring (136) is installed inside the gas cylinder (131) and abuts against one end of the reciprocating rod (132).

4. The low-noise compressor for cold storage refrigeration according to claim 3, characterized in that: The two sides of the partition (113) are bent upward at 90 degrees and used to intercept the two sides of the air cushion (120), and its top is normally lower than the bottom edge of the base frame (111).

5. The low-noise compressor for cold storage refrigeration according to claim 4, characterized in that: The other two sides of the partition (113) are open, and a baffle (150) is provided at the opening. The baffle (150) abuts against the air cushion (120). A return spring (153) is elastically fixed to the side of the baffle (150) away from the air cushion (120). The air cushion (120) overcomes the elastic potential energy of the return spring (153) to drive the baffle (150) to move laterally. Under the elastic action of the return spring (153), the baffle (150) is pushed back to its original position.

6. The low-noise compressor for cold storage refrigeration according to claim 5, characterized in that: A bearing pad (151) is slidably disposed in the middle of the baffle (150), and an auxiliary pad (152) fixed to the arch frame (112) is disposed below the bearing pad (151). The bearing pad (151) supports the upper base frame (111) by sliding along the inclined surface of the auxiliary pad (152).

7. The low-noise compressor for cold storage refrigeration according to claim 6, characterized in that: The bearing pad (151) is less than the distance between the two limiting rods (114) in the length direction.

8. The low-noise compressor for cold storage refrigeration according to claim 1, characterized in that: The stop mechanism (140) includes a stop rod (141) that can pass through the limit rod (114), and the limit rod (114) corresponding to the stop rod (141) has a limit hole (115), and the stop rod (141) is located above the arch frame (112).

9. The low-noise compressor for cold storage refrigeration according to claim 8, characterized in that: A push-pull rod (142) is fixedly installed below the stop rod (141) and passes through the arch frame (112). A stop block (143) is fixedly installed on the push-pull rod (142), and a support spring (144) is elastically connected between the stop block (143) and the inner wall of the arch frame (112).

10. The low-noise compressor for cold storage refrigeration according to claim 9, characterized in that: The end of the push-pull rod (142) is fitted with an outer tube (145) that communicates with the air cushion (120), and the end of the outer tube (145) is open.

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