Variable-frequency mute energy-saving integral air conditioner
By using a small-sized DC brushless inverter compressor, dual inlet fans, and a soundproof enclosure in the integrated air conditioner, combined with a sound insulation cotton structure, the problems of high noise and insufficient cooling capacity of the integrated air conditioner are solved, achieving a low-noise and high-efficiency cooling effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI ZHOULI ENERGY SAVING EQUIP CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-04-17
AI Technical Summary
Existing integrated air conditioning systems are noisy and have limited cooling capacity for individual units, affecting comfort and usage scenarios.
It adopts a small-sized DC brushless inverter compressor, dual inlet fans, a soundproof cover and sound insulation cotton structure, combined with a dual-side air inlet design to reduce wind speed and increase air volume, reduce fan noise, and further reduce compressor noise through the soundproof cover.
Significantly reduces noise, increases cooling capacity per unit, and enhances comfort, making it suitable for environments with strict noise requirements.
Smart Images

Figure CN224136084U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of marine engineering technology, specifically to a variable frequency, quiet, energy-saving integrated air conditioner. Background Technology
[0002] Integrated air conditioning units are the simplest type of water-cooled marine air conditioning unit, as they are all integrated into one unit containing all refrigeration components. Installation only requires connecting to electricity and water; it doesn't involve the installation of the refrigeration system itself, making it cost-effective. However, current integrated air conditioning units on the market have problems. Because they are a single unit, usually installed inside the cabin, the noise from their operation significantly impacts comfort. Most integrated air conditioning units currently use a single intake fan for airflow, and its biggest drawback is high wind noise—typically around 70 dB. The compressor is also a significant noise source, so these units on the market generally have a cooling capacity of 36,000 btu / h; larger models result in unacceptable noise levels.
[0003] In summary, the shortcomings of the existing technology are as follows:
[0004] 1. The noise level is relatively high; the noise level of air conditioners on the market is generally 70-75 decibels.
[0005] 2. The cooling capacity of a single unit is limited.
[0006] In summary, this utility model designs a variable frequency silent energy-saving integrated air conditioner that reduces noise and increases the cooling capacity of a single unit. Utility Model Content
[0007] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a variable frequency silent energy-saving integrated air conditioner that reduces noise, increases the cooling capacity of a single unit, greatly improves comfort, and is highly practical.
[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: a variable frequency silent energy-saving integrated air conditioner, including a compressor, dual inlet fans, a condenser, a first silent cover, a second silent cover, and an evaporator. The compressor is installed inside the first silent cover, and the dual inlet fans are installed inside the second silent cover. The compressor is connected to the evaporator and the condenser respectively. The dual inlet fans are installed between the evaporator and the condenser. A condensate outlet is also provided below the condenser.
[0009] Preferably, the compressor is a small-sized DC brushless inverter compressor.
[0010] Preferably, the upper and lower ports of the condenser are a cooling water inlet and a cooling water outlet, respectively.
[0011] Preferably, the first soundproof cover is wrapped with two types of sound-insulating cotton, which further reduces the noise of the compressor.
[0012] This utility model has the following beneficial effects:
[0013] 1. It adopts a small-sized DC brushless inverter compressor + silent enclosure structure;
[0014] 2. It adopts a dual-inlet fan. The dual air inlets can reduce the wind speed and increase the air volume, thereby reducing the noise generated by the fan by about 10 decibels.
[0015] 3. Noise is significantly reduced, which is beneficial for some ships with strict noise requirements. Attached Figure Description
[0016] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments;
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a schematic diagram of another orientation of the present invention. Detailed Implementation
[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0020] Reference Figure 1-2 The specific implementation adopts the following technical solution: a variable frequency silent energy-saving integrated air conditioner, including a compressor 1, a dual inlet fan 2, a condenser 3, a first silent cover 4, a second silent cover 5, and an evaporator 6. The compressor 1 is installed inside the first silent cover 4, and the dual inlet fan 2 is installed inside the second silent cover 5. The compressor 1 is connected to the evaporator 6 and the condenser 3 respectively. The dual inlet fan 2 is installed between the evaporator 6 and the condenser 3. A condensate outlet 7 is also provided below the condenser 3.
[0021] It is worth noting that the compressor 1 is a small-sized DC brushless inverter compressor.
[0022] It is worth noting that the upper and lower ports of the condenser 3 are cooling water inlet 31 and cooling water outlet 32, respectively.
[0023] In addition, the first noise-reducing cover 4 is wrapped with two kinds of sound-insulating cotton, which further reduces the noise of the compressor.
[0024] This specific implementation uses a smaller DC brushless inverter compressor and incorporates a compressor soundproof enclosure—reducing compressor noise by 10dB. The unit employs dual-inlet fans, which are installed inside the sheet metal structure. The dual air inlets reduce airflow velocity and increase air volume, thereby lowering fan noise. The compressor inside the air conditioner is a small-sized DC brushless inverter compressor, further reducing the air conditioner's size. Simultaneously, the compressor is wrapped with two types of sound-insulating cotton, further reducing compressor noise.
[0025] This specific implementation uses a DC brushless inverter compressor, which can operate at high speeds. The small compressor can achieve the same capacity as a large fixed-frequency compressor by running at higher speeds. The cylinder is small but the speed is high, and the required discharge volume can still be achieved. The DC brushless inverter compressor is more efficient than ordinary fixed-frequency compressors. In addition, the compressor is covered with a soundproof cover and two kinds of sound insulation cotton to further reduce the noise of the compressor. It adopts a dual-inlet fan, and the dual air inlets can reduce the wind speed and increase the air volume. Then, the soundproof cover is installed to further reduce the noise generated by the fan.
[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A variable frequency, silent, energy-saving, whole air conditioner, characterized in that, It includes a compressor (1), a dual-inlet fan (2), a condenser (3), a first noise-retaining enclosure (4), a second noise-retaining enclosure (5), and an evaporator (6). The compressor (1) is installed inside the first noise-retaining enclosure (4), and the dual-inlet fan (2) is installed inside the second noise-retaining enclosure (5). The compressor (1) is connected to the evaporator (6) and the condenser (3) respectively. The dual-inlet fan (2) is installed between the evaporator (6) and the condenser (3). A condensate outlet (7) is also installed below the condenser (3).
2. The variable frequency silent energy-saving packaged air conditioner according to claim 1, wherein The compressor (1) mentioned above is a DC brushless inverter compressor.
3. The variable frequency silent energy-saving packaged air conditioner according to claim 1, wherein The upper and lower ports of the condenser (3) are cooling water inlet (31) and cooling water outlet (32), respectively.
4. The variable frequency silent energy-saving packaged air conditioner according to claim 1, wherein The first soundproof cover (4) is wrapped with two kinds of soundproof cotton.