Silencing type refrigeration water cooling unit

Abstract

The utility model belongs to the technical field of refrigeration, and discloses a silencing type refrigeration water chilling unit which comprises a compressor, a pressure maintaining valve and a silencing structure, the compressor is configured to compress a low-temperature low-pressure gaseous refrigerant into a high-temperature high-pressure gaseous refrigerant, the inlet end of the pressure maintaining valve is communicated with the outlet end of the compressor, and the outlet end of the pressure maintaining valve is communicated with the silencing structure. The noise reduction structure comprises a noise reduction box, and the pressure maintaining valve is arranged in the noise reduction box. The pressure maintaining valve is arranged in the containing cavity of the silencing box, noise felt by a user can be greatly reduced in the operation process, and the experience feeling of the user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration, in particular to a silencer type refrigeration water cooling unit. Background Art

[0002] Chillers are also called freezers, refrigeration units, ice water units, cooling equipment, etc. Chillers include four main components: compressor, evaporator, condenser and expansion valve, which achieve the cooling and heating effect of the unit. Because they are widely used in various industries, the requirements for chillers are also different. In the refrigeration industry, they are divided into air-cooled chillers and water-cooled chillers. Compared with air-cooled chillers, water-cooled chillers have higher energy efficiency, so they are widely used in large places such as hotels, restaurants, schools, theaters, shopping malls, office buildings, residential buildings, hospitals, etc. They can also be used in nuclear power, plastic chemicals, precision instruments and other process cooling processes.

[0003] Water-cooled chillers that operate all year round often encounter cold starts in winter or too low a high-low pressure difference in the compressor during unit operation. Therefore, water-cooled chillers that operate year-round usually add a pressure maintaining valve at the compressor outlet to increase the pressure during winter cooling so that the pressure is maintained within the normal operating range and the normal loading of the compressor is ensured. However, when the operating pressure is low, the opening of the pressure maintaining valve is small. When high-speed fluid passes through a small orifice from a large-diameter pipeline, there will be obvious screaming and whistling noises, and the sound is loud and harsh.

[0004] Therefore, a device is urgently needed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a sound-absorbing refrigeration water-cooling unit, which can effectively reduce the noise when the water-cooling unit is running.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Silencer type refrigeration water cooling unit, including:

[0008] A compressor configured to compress a low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant;

[0009] a pressure maintaining valve, wherein an inlet end of the pressure maintaining valve is connected to an outlet end of the compressor;

[0010] The sound-absorbing structure comprises a sound-absorbing box, and the pressure-maintaining valve is disposed in the sound-absorbing box.

[0011] Preferably, the sound-absorbing box comprises a top seat, a base and four side panels, the four side panels are connected end to end, the tops of the four side panels are connected to the top seat, and the bottoms of the four side panels are connected to the base.

[0012] Preferably, the sound-absorbing structure further includes sound-absorbing cotton, and the sound-absorbing cotton covers the inner walls of the top seat, the base and the four side panels.

[0013] Preferably, the silencer refrigeration water-cooling unit also includes an oil separator, which is used to separate the engine oil from the high-temperature and high-pressure gaseous refrigerant, the inlet end of the oil separator is connected to the outlet end of the compressor, the outlet end of the oil separator is connected to the inlet end of the pressure maintaining valve, and the oil return end of the oil separator is connected to the compressor.

[0014] Preferably, the oil separator is placed in the muffler box.

[0015] Preferably, the silencer type refrigeration water-cooling unit further comprises a pipe assembly, the pipe assembly comprising a first pipe and a second pipe, one end of the first pipe being connected to the outlet end of the compressor, the other end of the first pipe extending into the silencer box and connected to the inlet end of the oil separator, one end of the second pipe being connected to the inlet end of the condenser, the other end of the second pipe extending into the silencer box and connected to the outlet end of the pressure maintaining valve.

[0016] Preferably, one of the side plates is provided with a first through hole, and the other end of the first pipe passes through the first through hole, and the other side plate is provided with a second through hole, and the other end of the second pipe passes through the second through hole.

[0017] Preferably, the muffler structure further includes a first sealing head, the other end of the first pipeline is connected to the inlet end of the oil separator through the first sealing head, and the first sealing head blocks the first through hole.

[0018] Preferably, the muffler structure further includes a second sealing head, the other end of the second pipe is connected to the inlet end of the condenser via the second sealing head, and the second sealing head blocks the second through hole.

[0019] Preferably, the top seat, the base and the four side panels are all made of platinum plates.

[0020] Beneficial effects: The utility model provides a silencer type refrigeration water cooling unit, which includes a compressor, a pressure maintaining valve and a silencer structure. The compressor is configured to compress the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant. The inlet end of the pressure maintaining valve is connected to the outlet end of the compressor. The silencer structure includes a silencer box, and the pressure maintaining valve is placed in the silencer box. By placing the pressure maintaining valve in the storage cavity of the silencer box, the noise felt by the user can be greatly reduced during operation, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a silencer type refrigeration water cooling unit provided in an embodiment of the utility model.

[0022] In the figure:

[0023] 1. Compressor; 2. Condenser; 3. Evaporator; 4. Muffler; 5. First pipeline; 6. Second pipeline. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0025] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0028] Due to production and living needs, many places need to operate water-cooled chillers throughout the year. However, due to the low temperature in winter, the operating pressure of the water-cooled chiller is often low, resulting in the compressor being unable to load normally. To solve this problem, the prior art has adopted measures to add a pressure maintaining valve at the compressor outlet to increase the unit pressure during winter refrigeration, so that the unit pressure is maintained within the normal operating range and the normal loading of the compressor is ensured. However, the pressure maintaining valve controls the fluid outlet opening by a built-in spring. When the unit operating pressure is low, the opening of the pressure maintaining valve is small. When high-speed fluid passes through a small orifice from a large-diameter pipeline, there will be obvious screaming and whistling noises, and the sound is loud and harsh, resulting in a poor experience.

[0029] Therefore, this embodiment provides a silencer refrigeration water-cooling unit, which can effectively reduce the noise during the operation of the water-cooling unit and improve the user experience.

[0030] In this embodiment, refer to Figure 1 The silencer refrigeration water-cooling unit comprises a compressor 1, a condenser 2, an evaporator 3 and an expansion valve (not shown). The inlet end of the compressor 1 is connected to the outlet end of the evaporator 3, the outlet end of the compressor 1 is connected to the inlet end of the condenser 2, the outlet end of the condenser 2 is connected to the inlet end of the expansion valve, and the outlet end of the expansion valve is connected to the inlet end of the evaporator 3. The compressor 1 inhales the low-temperature and low-pressure gaseous refrigerant and compresses it into a high-temperature and high-pressure gaseous refrigerant. The condenser 2 cools the high-temperature and high-pressure gaseous refrigerant into a low-temperature and high-pressure liquid or a gas-liquid mixture. The low-temperature and high-pressure liquid or the gas-liquid mixture is throttled into a low-temperature and low-pressure liquid refrigerant through the expansion valve. Finally, the evaporator 3 vaporizes the low-temperature and low-pressure liquid refrigerant into a low-temperature and low-pressure liquid refrigerant and re-introduces it into the compressor 1 to repeat the refrigeration cycle.

[0031] Optionally, the silencer refrigeration water-cooling unit further includes an oil separator (not shown), the inlet end of the oil separator is connected to the outlet end of the compressor 1, and is used to separate the engine oil and the high-temperature and high-pressure gaseous refrigerant to ensure the safe and efficient operation of the water-cooling unit. Specifically, after the high-temperature and high-pressure gas (refrigerant and engine oil) ejected from the outlet end of the compressor 1 enters the oil separator, it enters the guide vane of the oil separator, flows along the guide vane in a spiral shape, and separates the engine oil by centrifugal force and gravity. The separated engine oil flows down along the inner wall of the cylinder and is concentrated in the oil pan, and returns to the compressor 1 through the oil return end of the oil separator, specifically, the engine oil returns to the crankcase of the compressor 1.

[0032] In order to ensure that the operating pressure of the unit is maintained within a normal range, the present embodiment further includes a pressure maintaining valve (not shown), the inlet end of the pressure maintaining valve is connected to the outlet end of the oil separator, and the outlet end of the pressure maintaining valve is connected to the inlet end of the condenser 2. The pressure maintaining valve can control the fluid outlet opening through a built-in spring to adjust the pressure of the high-temperature and high-pressure gaseous refrigerant. Specifically, when the initial pressure of the high-temperature and high-pressure gaseous refrigerant is low, the built-in spring of the pressure maintaining valve is adjusted to a smaller opening to increase the pressure of the high-temperature and high-pressure gaseous refrigerant.

[0033] By setting up compressor 1, condenser 2, evaporator 3, expansion valve, oil separator and pressure maintaining valve, the pressure of the water-cooling unit can be maintained within the normal operating range, ensuring the normal loading of compressor 1, so that the water-cooling unit can operate normally throughout the year. However, when the opening of the pressure maintaining valve is small, harsh noise will occur, and the experience is poor.

[0034] Therefore, the present embodiment is also provided with a muffler structure, which includes a muffler box 4. Specifically, the muffler box 4 includes a top seat, a base and four side panels, wherein the four side panels are connected end to end, and the tops of the four side panels are all connected to the top seat, and the bottoms of the four side panels are all connected to the base, thereby forming a storage cavity, and the pressure maintaining valve is placed in the storage cavity of the muffler box 4. By placing the pressure maintaining valve in the storage cavity of the muffler box 4, the noise felt by the user can be greatly reduced during operation, thereby improving the user experience.

[0035] For example, the top seat, base and four side panels are all made of platinum plates, which have excellent sound insulation effect.

[0036] Furthermore, the sound-absorbing structure also includes sound-absorbing cotton, which covers the inner walls of the top seat, the base and the four side panels to further reduce noise and enhance the experience. Optionally, the sound-absorbing cotton is attached to the top seat, the base and the four side panels and is not easy to fall off. Preferably, this embodiment uses pyramid-shaped sound-absorbing cotton, raw egg cotton, fungus cotton or super melamine foam.

[0037] In this embodiment, the oil separator is also placed in the storage cavity of the muffler box 4, which can prevent the noise generated by the oil separator vibrating due to the pressure maintaining valve from being transmitted, thereby further reducing the noise.

[0038] For example, the silencer type refrigeration water-cooling unit further includes a pipe assembly, which includes a first pipe 5 and a second pipe 6. One end of the first pipe 5 is connected to the outlet end of the compressor 1, and the other end of the first pipe 5 extends into the storage cavity of the silencer box 4 and is connected to the inlet end of the oil separator, so that the high-temperature and high-pressure gas (refrigerant and oil) ejected from the outlet end of the compressor 1 is passed into the oil separator, and one end of the second pipe 6 is connected to the inlet end of the condenser 2, and the other end of the second pipe 6 extends into the storage cavity of the silencer box 4 and is connected to the outlet end of the pressure maintaining valve, so that the high-temperature and high-pressure gaseous refrigerant after pressure regulation by the pressure maintaining valve is passed into the condenser 2.

[0039] Furthermore, one of the side plates is provided with a first through hole, and the other end of the first pipe 5 passes through the first through hole to connect to the inlet end of the oil separator, and the other side plate is provided with a second through hole, and the other end of the second pipe 6 passes through the second through hole to connect to the outlet end of the pressure maintaining valve.

[0040] Preferably, the muffler structure further includes a first sealing head (not shown), the other end of the first pipe 5 is connected to the inlet end of the oil separator through the first sealing head, and the first sealing head can block the first through hole. For example, the first sealing head includes two first communicating rings that are connected to each other, one of which is sleeved on the other end of the first pipe 5 and tightly blocks the first through hole on the outside, and the other first communicating ring is sleeved on the inlet end of the oil separator and tightly blocks the first through hole on the inside, which can further prevent noise from being transmitted out of the muffler box 4. Preferably, the first communicating ring is made of platinum sheet material, which has excellent sound insulation effect.

[0041] Further preferably, the muffler structure further includes a second sealing head (not shown), the other end of the second pipe 6 is connected to the inlet end of the condenser 2 through the second sealing head, and the second sealing head can block the second through hole. For example, the second sealing head includes two second communicating rings that are connected to each other, one of which is sleeved on the other end of the second pipe 6 and tightly blocked on the outside of the second through hole, and the other second communicating ring is sleeved on the inlet end of the condenser 2 and tightly blocked on the inside of the second through hole, which can further prevent noise from being transmitted out of the muffler box 4. Preferably, the second communicating ring is made of platinum sheet, which has excellent sound insulation effect.

[0042] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A silent refrigeration water cooling unit, characterized in that: include: A compressor (1), the compressor (1) being configured to compress a low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant; a pressure maintaining valve, the inlet end of the pressure maintaining valve being in communication with the outlet end of the compressor (1); A silencer structure, comprising a silencer box (4), wherein the pressure maintaining valve is disposed in the silencer box (4).

2. The sound-absorbing refrigeration water-cooling unit according to claim 1, characterized in that: The muffler box (4) comprises a top seat, a base and four side panels, the four side panels are connected end to end, the tops of the four side panels are connected to the top seat, and the bottoms of the four side panels are connected to the base.

3. The sound-absorbing refrigeration water-cooling unit according to claim 2, characterized in that: The sound-absorbing structure also includes sound-absorbing cotton, which covers the inner walls of the top seat, the base and the four side panels.

4. The sound-absorbing refrigeration water-cooling unit according to claim 2, characterized in that: The silencer type refrigeration water cooling unit also includes an oil separator, which is used to separate the engine oil from the high-temperature and high-pressure gaseous refrigerant, the inlet end of the oil separator is connected to the outlet end of the compressor (1), the outlet end of the oil separator is connected to the inlet end of the pressure maintaining valve, and the oil return end of the oil separator is connected to the compressor (1).

5. The sound-absorbing refrigeration water-cooling unit according to claim 4, characterized in that: The oil separator is placed in the muffler box (4).

6. The sound-absorbing refrigeration water-cooling unit according to claim 4, characterized in that: The silencer type refrigeration water-cooling unit further comprises a pipe assembly, wherein the pipe assembly comprises a first pipe (5) and a second pipe (6), wherein one end of the first pipe (5) is connected to the outlet end of the compressor (1), and the other end of the first pipe (5) extends into the silencer box (4) and is connected to the inlet end of the oil separator, and one end of the second pipe (6) is connected to the inlet end of the condenser (2), and the other end of the second pipe (6) extends into the silencer box (4) and is connected to the outlet end of the pressure maintaining valve.

7. The sound-absorbing refrigeration water-cooling unit according to claim 6, characterized in that: One of the side plates is provided with a first through hole, and the other end of the first pipe (5) passes through the first through hole, and the other side plate is provided with a second through hole, and the other end of the second pipe (6) passes through the second through hole.

8. The sound-absorbing refrigeration water-cooling unit according to claim 7, characterized in that: The muffler structure further comprises a first sealing head, the other end of the first pipe (5) is connected to the inlet end of the oil separator via the first sealing head, and the first sealing head blocks the first through hole.

9. The sound-absorbing refrigeration water-cooling unit according to claim 7, characterized in that: The muffler structure further comprises a second sealing head, the other end of the second pipe (6) is connected to the inlet end of the condenser (2) via the second sealing head, and the second sealing head blocks the second through hole.

10. The sound-absorbing refrigeration water-cooling unit according to any one of claims 2 to 9, characterized in that: The top seat, the base and the four side panels are all made of platinum plates.

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