Water-cooling direct expansion host machine with noise reduction function
By using a water-cooled condenser and a noise-reducing frame structure made of polyurethane foam, the problem of performance degradation and high noise of air-cooled condensers in high temperature and humidity environments is solved, resulting in a high-efficiency, quiet, and long-life water-cooled direct expansion unit suitable for air conditioning equipment in various locations.
Patent Information
- Application Number
- CN202520221965.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-02-12
AI Technical Summary
Existing air-cooled condensers suffer from performance degradation, high noise levels, short lifespan, and susceptibility to environmental factors under high temperature and humidity conditions, failing to meet the demands of modern air conditioning equipment for high efficiency, quiet operation, and long lifespan.
The system employs a water-cooled condenser combined with a noise-reducing frame structure. The side panels and top panel are made of polyurethane foam board to form a sealed enclosure, which isolates compressor noise and cools the unit through a water cooling system. Combined with precise temperature control and filtration devices, this results in a highly efficient and quiet water-cooled direct expansion unit.
It achieves significant noise reduction, extends equipment life, and improves user comfort and equipment stability while achieving high-efficiency cooling, making it suitable for applications in biomedicine, cold chain logistics, food processing, and other fields.
Smart Images
Figure CN223925097U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of commercial central air conditioning equipment, and in particular relates to a water-cooled direct expansion unit with noise reduction function. Background Technology
[0002] Compared to air-cooled unitary air conditioning units, which rely on high-power devices such as electric fans for heat dissipation, water-cooled unitary air conditioning units use water circulation for heat dissipation, resulting in lower power consumption. The energy-saving effect of water-cooled condensers is particularly pronounced in large-scale refrigeration systems.
[0003] (1) Efficiency of water-cooled condensers compared with air-cooled condensers
[0004] Water-cooled condensers use water as the cooling medium, enabling them to quickly and effectively cool hot gases in a refrigeration system. Because water has better thermal conductivity than air, water-cooled condensers are significantly more efficient than air-cooled condensers. Specifically, water can rapidly remove a large amount of heat, allowing the refrigeration system to maintain high cooling capacity and efficiency. This advantage is particularly evident in large refrigeration systems or applications requiring high-efficiency cooling. Air-cooled condensers use air as the cooling medium, and their cooling efficiency is limited by the thermal conductivity of air. Due to air's low specific heat capacity and poor thermal conductivity, air-cooled condensers have relatively lower cooling efficiency. Especially during hot seasons or in areas with high ambient temperatures, the cooling capacity of air-cooled condensers will further decrease, leading to a decline in the performance of the refrigeration system.
[0005] (2) Service life of water-cooled condensers compared with air-cooled condensers
[0006] Water-cooled condensers typically have a longer service life. Because water cooling effectively prevents equipment from operating at high temperatures, avoiding the damage and thermal expansion effects of prolonged high-temperature environments, water-cooled condensers have a relatively long service life. Furthermore, their compact structure and stable performance also ensure long-term use. Air-cooled condensers, on the other hand, are more susceptible to environmental factors during operation, such as dust and dirt. These impurities easily adhere to the condenser surface, affecting its heat dissipation. Over time, these impurities can lead to performance degradation and even malfunction. In addition, the performance of air-cooled condensers is also affected under extreme weather conditions (such as high temperature and high humidity), thus shortening their service life.
[0007] (3) Noise controllability
[0008] The main noise sources of air-cooled condensers include the fan, compressor, and circulating water pump. The fan is the largest noise source in an air-cooled condenser, especially during high-load operation, where the fan speed increases and the noise increases accordingly. Typically, the noise from the fan during operation can reach over 60 decibels, which may have a certain impact on human hearing. This noise can be particularly noticeable at night or in quiet environments, affecting people's rest and work. In contrast, water-cooled condensers are superior in terms of noise reduction. Water-cooled condensers use a water cooling system to cool the radiator, transporting water through pipes, and then returning it to the main unit to absorb heat. This cooling method is not only efficient but also relatively quiet. Furthermore, water-cooled condensers require less space for noise reduction during the later stages of construction compared to air-cooled condensers. Installing sound-absorbing materials such as soundproofing panels and sound-absorbing cotton around water-cooled condensers can effectively reduce noise propagation. These materials can absorb and reflect noise, thereby reducing the impact of noise on the surrounding environment.
[0009] In response to this, water-cooled direct expansion air conditioners with noise reduction capabilities, through their noise-reducing frame structure and the heat exchange characteristics of water-cooled condensers, have become leaders in modern air conditioning technology with their superior performance, high energy efficiency, and environmentally friendly design concept. They provide users with comfortable, safe, and energy-saving air conditioning solutions and are widely used in various places such as biomedicine, cold chain logistics, food processing, and factory air conditioning. Utility Model Content
[0010] In view of this, the present invention aims to provide a water-cooled direct expansion host with noise reduction function to solve at least one technical problem in the background art.
[0011] To achieve the above objectives, the technical solution of this utility model is implemented as follows:
[0012] A water-cooled direct expansion unit with noise reduction function includes a refrigerant piping system assembly, a hinged double-door electrical control box, a rear side panel, a right side panel, a bottom plate, an integrated channel steel chassis, a front side panel, a left side panel, and a top plate;
[0013] The rear panel, right side panel, front panel, left side panel, bottom panel, and top panel surround to form an internal space. The hinged double-door electrical control box and refrigerant piping system components are located in the internal space and above the bottom panel.
[0014] The hinged double-door electrical control box is located on one side of the refrigerant piping system components;
[0015] The integrated channel steel chassis is located below the base plate.
[0016] Furthermore, the rear side panel, right side panel, front side panel, left side panel, bottom panel, and top panel are made of polyurethane foam board.
[0017] Furthermore, a front panel door is provided on the front panel.
[0018] Furthermore, the refrigerant piping system components include a compressor, a water-cooled shell-and-tube condenser, a dryer filter, a thermostatic expansion valve, and a ball valve;
[0019] The compressor is connected to the water-cooled shell-and-tube condenser via a pipe. The water-cooled shell-and-tube condenser is connected to the dryer filter via a pipe. The dryer filter is connected to the thermostatic expansion valve via a pipe. The thermostatic expansion valve is connected to the indoor and outdoor unit connecting pipes. The indoor and outdoor unit connecting pipes enter the indoor unit from the outdoor unit. The indoor unit is connected to the ball valve via a pipe. The ball valve is connected to the compressor via a pipe.
[0020] Furthermore, the compressor is a fixed-frequency scroll compressor.
[0021] Furthermore, the top of the water-cooled shell-and-tube condenser is provided with several first mounting plates, and the first mounting plates are provided with several mounting holes. The compressor and the hinged double-door electrical control box are mounted above the water-cooled shell-and-tube condenser through the first mounting plates.
[0022] Furthermore, the water-cooled shell-and-tube condenser is mounted on the base plate via a second mounting bracket, which has several second mounting holes.
[0023] Furthermore, the bottom of the water-cooled shell-and-tube condenser is provided with a third mounting bracket, which has several third mounting holes;
[0024] The third mounting bracket is L-shaped. The horizontal end of the third mounting bracket is installed at the bottom of the water-cooled shell-and-tube condenser. The pipe between the dryer filter and the thermal expansion valve is connected to the vertical end of the third mounting bracket through the first U-shaped clamp.
[0025] Furthermore, the ball valve is mounted above the hinged double-door electrical control box via a second U-shaped clamp.
[0026] Compared with existing technologies, the water-cooled direct expansion unit with noise reduction function described in this utility model has the following advantages:
[0027] 1. The water-cooled direct expansion unit with noise reduction function described in this application adopts an integrated structure of assembled profiles, which is convenient for users to install, debug and maintain on site, and takes into account both overall aesthetics and noise reduction function.
[0028] 2. This application has a rear side panel, a right side panel, a front side panel, a left side panel, a bottom panel, and a top panel forming an internal space, which can effectively isolate the electromagnetic and mechanical noise generated by the compressor when it runs at high speed, ensuring operational comfort. This means that the noise generated by the compressor during the actual operation of the unit is surrounded inside the unit, which greatly reduces the noise pollution to the customer's life and work during the unit's operation. Attached Figure Description
[0029] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:
[0030] Figure 1 This is a schematic diagram of the exploded structure of a water-cooled direct expansion host with noise reduction function in an embodiment of this utility model;
[0031] Figure 2 This is a schematic diagram of the overall structure of a water-cooled direct expansion host with noise reduction function in an embodiment of this utility model;
[0032] Figure 3 This is a schematic diagram of a water-cooled direct expansion host with noise reduction function, excluding the external structure, in an embodiment of this utility model.
[0033] Figure 4 This is a schematic diagram of the refrigerant pipeline flow of a water-cooled direct expansion unit with noise reduction function in an embodiment of this utility model;
[0034] Figure 5 This is a schematic diagram of a refrigerant piping system for a water-cooled direct expansion unit with noise reduction function, as described in an embodiment of this utility model.
[0035] Figure 6 This is a schematic diagram of a water-cooled condenser with noise reduction function for a water-cooled direct expansion host in an embodiment of this utility model.
[0036] Explanation of reference numerals in the attached figures:
[0037] 1. Refrigerant piping system components; 1-1. Compressor; 1-2. Water-cooled shell and tube condenser; 1-3. Dryer filter; 1-4. Thermal expansion valve; 1-5. Ball valve; 1-6. First mounting bracket; 1-7. Second mounting bracket; 1-8. Second mounting bracket; 1-9. First U-shaped clamp; 1-10. Second U-shaped clamp; 1-11. Indoor and outdoor unit connecting pipes; 2. Hinged double-door electrical control box; 3. Rear side panel; 4. Right side panel; 5. Bottom plate; 6. Integrated channel steel chassis; 7. Front side panel; 8. Front side panel door; 9. Left side panel; 10. Top plate. Detailed Implementation
[0038] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0039] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0041] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0042] like Figure 1 As shown, a water-cooled direct expansion unit with noise reduction function includes a refrigerant piping system component 1, a hinged double-door electrical control box 2, a rear side plate 3, a right side plate 4, a bottom plate 5, an integrated channel steel chassis 6, a front side plate 7, a left side plate 9, and a top plate 10. The rear side plate 3, right side plate 4, front side plate 7, left side plate 9, bottom plate 5, and top plate 10 surround to form an internal space. The hinged double-door electrical control box 2 and the refrigerant piping system component 1 are located in the internal space and are located above the bottom plate 5. The hinged double-door electrical control box 2 is located on one side of the refrigerant piping system component 1. The integrated channel steel chassis 6 is located below the bottom plate 5.
[0043] The rear panel 3, right side panel 4, front panel 7, left side panel 9, bottom panel 5, and top panel 10 are made of polyurethane foam board, and the front panel 7 is equipped with a front panel door panel 8. This effectively isolates the electromagnetic and mechanical noise generated by the compressor 1-1 during high-speed operation, ensuring operational comfort.
[0044] The refrigerant piping system component 1 includes a compressor 1-1, a water-cooled shell-and-tube condenser 1-2, a dryer filter 1-3, a thermostatic expansion valve 1-4, and a ball valve 1-5. The compressor 1-1 is connected to the water-cooled shell-and-tube condenser 1-2 via a pipe, the water-cooled shell-and-tube condenser is connected to the dryer filter 1-3 via a pipe, the dryer filter 1-3 is connected to the thermostatic expansion valve 1-4 via a pipe, the thermostatic expansion valve 1-4 is connected to the indoor / outdoor unit connection pipe 1-11, the indoor / outdoor unit connection pipe 1-11 enters the indoor unit from the outdoor unit, the indoor unit is connected to the ball valve 1-5 via a pipe, and the ball valve 1-5 is connected to the compressor 1-1 via a pipe.
[0045] Compressor 1-1 is a fixed-frequency scroll compressor 1-1.
[0046] The top of the water-cooled shell-and-tube condenser 1-2 is provided with several first mounting plates, each with several mounting holes. The compressor 1-1 and the hinged double-door electrical control box 2 are mounted above the water-cooled shell-and-tube condenser 1-2 via the first mounting plates. The water-cooled shell-and-tube condenser 1-2 is mounted on the base plate 5 via a second mounting bracket 1-81-7, which has several second mounting holes. The bottom of the water-cooled shell-and-tube condenser 1-2 is provided with a third mounting bracket, which has several third mounting holes. The third mounting bracket is L-shaped, with its horizontal end mounted at the bottom of the water-cooled shell-and-tube condenser 1-2. The pipe between the dryer filter 1-3 and the thermal expansion valve 1-4 is connected to the vertical end of the third mounting bracket via a first U-shaped clamp 1-9. The ball valve 1-5 is mounted above the hinged double-door electrical control box 2 via a second U-shaped clamp 1-10.
[0047] like Figure 3 As shown, a water-cooled direct expansion host with noise reduction function is provided. The hinged double-door electrical control box 2 is supported and fixed by water-cooled shell tube condenser 1-2 and ball valve 1-5. The structural components are interlocked by bolt connection.
[0048] like Figure 2 As shown, a water-cooled direct expansion unit with noise reduction function, after installation of the rear side plate 3, right side plate 4, bottom plate 5, integrated channel steel chassis 6, front side plate 7, front side plate door panel 8, left side plate 9, and top plate 10, forms a sealed enclosure. This allows the noise generated by the compressor 1-1 during the actual operation of the unit to be contained within the unit, greatly reducing the noise pollution to customers' lives and work during unit operation.
[0049] like Figure 1As shown, a water-cooled direct expansion compressor with noise reduction function is disclosed. The compressor 1-1 is a fixed-frequency scroll compressor 1-1, whose working principle is simple and clear. The fixed-frequency scroll compressor 1-1 controls the motor speed through a fixed power supply frequency, giving it high reliability and stability. The fixed-frequency scroll compressor 1-1 adopts existing technology. During long-term use, the fixed-frequency compressor 1-1 exhibits a low failure rate and a long service life, making it particularly suitable for applications with high requirements for equipment stability.
[0050] like Figure 4 As shown, a water-cooled direct expansion compressor with noise reduction function, taking the refrigeration cycle as an example, is illustrated. The arrows in the diagram represent the refrigerant cycle. After exiting the compressor 1-1, the refrigerant flows to the water-cooled shell-and-tube condenser 1-2. After exiting the water-cooled shell-and-tube condenser 1-2, it flows through the dryer filter 1-3 and the thermal expansion valve 1-4, then through the indoor / outdoor unit connecting pipe 1-11 from the outdoor unit into the indoor unit, and finally through the ball valve 1-5 back to the compressor 1-1. The refrigerant cycle is a simple refrigeration cycle.
[0051] like Figure 5 As shown, a water-cooled direct expansion compressor with noise reduction function features a thermostatic expansion valve 1-4 that automatically adjusts the refrigerant flow rate based on evaporator outlet temperature changes, achieving highly precise temperature control. By precisely controlling the refrigerant supply, the thermostatic expansion valve 1-4 ensures the indoor environment is maintained within an ideal temperature range. Furthermore, the thermostatic expansion valve 1-4 prevents liquid refrigerant from directly entering the compressor 1-1, avoiding the so-called "liquid slugging" phenomenon and providing excellent protection for the compressor 1-1 and other system components.
[0052] like Figure 5 As shown, a water-cooled direct expansion air conditioner with noise reduction function uses a dryer filter 1-3 to filter out impurities and moisture from the air, keeping the air conditioning system clean and dry, thus significantly improving the cooling and heating efficiency of the air conditioner. This means that under the same conditions, an air conditioner using a dryer filter 1-3 can reach the set temperature faster, thereby saving energy.
[0053] like Figure 6 As shown, a water-cooled direct expansion main unit with noise reduction function has eight 50mm first mounting holes on the top of the water-cooled shell-and-tube condenser 1-2. These first mounting holes are used for production hoisting and chassis fixing, avoiding the situation of left and right sliding when using forklift holes for hoisting, which would cause danger, and can also be used to connect with the water-cooled shell-and-tube condenser 1-2.
[0054] Meanwhile, a third mounting bracket 1-8 is welded to the lower part of the water-cooled shell-and-tube condenser 1-2 to fix some copper pipe components, preventing damage and detachment of the pipe components of a water-cooled direct expansion unit with noise reduction function during transportation.
[0055] This embodiment describes a water-cooled direct expansion main unit with noise reduction function, employing a polyurethane foam board structure for its outer perimeter. Polyurethane material itself possesses excellent airtightness and moisture-proof properties, effectively preventing moisture penetration and protecting the contents of the enclosure from dampness. The air gap structure of the polyurethane foam board allows it to effectively absorb and reflect sound waves, providing excellent sound insulation and significantly reducing noise interference. As a enclosure material, polyurethane foam board offers significant advantages in noise reduction. Its high-efficiency sound insulation performance, adjustable sound insulation effect, excellent sealing performance, effective vibration damping and noise reduction, and wide range of applications make polyurethane foam board an ideal choice for manufacturing high-sound-insulating enclosures.
[0056] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A water-cooled direct expansion unit with noise reduction function, characterized in that: Includes refrigerant piping system components, hinged double-door electrical control box, rear side panel, right side panel, bottom plate, integrated channel steel chassis, front side panel, left side panel, and top plate; The rear panel, right side panel, front panel, left side panel, bottom panel, and top panel surround to form an internal space. The hinged double-door electrical control box and refrigerant piping system components are located in the internal space and above the bottom panel. The hinged double-door electrical control box is located on one side of the refrigerant piping system components; The integrated channel steel chassis is located below the base plate.
2. A water-cooled direct expansion unit with noise reduction function according to claim 1, characterized in that: The front panel has a front panel door.
3. A water-cooled direct expansion unit with noise reduction function according to claim 1, characterized in that: The refrigerant piping system components include a compressor, a water-cooled shell-and-tube condenser, a dryer filter, a thermostatic expansion valve, and a ball valve; The compressor is connected to the water-cooled shell-and-tube condenser via a pipe. The water-cooled shell-and-tube condenser is connected to the dryer filter via a pipe. The dryer filter is connected to the thermostatic expansion valve via a pipe. The thermostatic expansion valve is connected to the indoor and outdoor unit connecting pipes. The indoor and outdoor unit connecting pipes enter the indoor unit from the outdoor unit. The indoor unit is connected to the ball valve via a pipe. The ball valve is connected to the compressor via a pipe.
4. A water-cooled direct expansion unit with noise reduction function according to claim 3, characterized in that: The compressor is a fixed-frequency scroll compressor.
5. A water-cooled direct expansion unit with noise reduction function according to claim 3, characterized in that: The top of the water-cooled shell-and-tube condenser is provided with several first mounting plates, and the first mounting plates are provided with several mounting holes. The compressor and the hinged double-door electrical control box are mounted above the water-cooled shell-and-tube condenser through the first mounting plates.
6. A water-cooled direct expansion unit with noise reduction function according to claim 3, characterized in that: The water-cooled shell-and-tube condenser is mounted on the base plate via a second mounting bracket, which has several second mounting holes.
7. A water-cooled direct expansion unit with noise reduction function according to claim 3, characterized in that: The bottom of the water-cooled shell-and-tube condenser is provided with a third mounting bracket, which has several third mounting holes. The third mounting bracket is L-shaped. The horizontal end of the third mounting bracket is installed at the bottom of the water-cooled shell-and-tube condenser. The pipe between the dryer filter and the thermal expansion valve is connected to the vertical end of the third mounting bracket through the first U-shaped clamp.
8. A water-cooled direct expansion unit with noise reduction function according to claim 3, characterized in that: The ball valve is installed above the hinged double-door electrical control box via a second U-shaped clamp.