Screw type air-cooled heat pump unit capable of reducing noise

Abstract

The utility model discloses a screw type air-cooled heat pump unit capable of reducing noise, which comprises an air-cooled unit, a sealing box and a finned radiator, the air-cooled unit is provided with a shell, the upper part of the shell is provided with a fan host, and the lower part of the shell is provided with a refrigeration cycle device; the sealing box is arranged on one side of the air cooling unit and is matched with the air cooling unit in height, a mounting cavity is formed in the sealing box, the screw compressor is arranged in the mounting cavity, the finned radiator is arranged in the sealing box, a fluid channel is formed in the finned radiator, and the air cooling unit is arranged in the fluid channel. The fluid channel is connected with a chilled water bypass of the refrigeration cycle device, and the finned radiator is used for exchanging heat with the mounting cavity. The sealing box matched with the air cooling unit in size and structure is independently arranged on the air cooling unit, so that the structure and the appearance of the whole unit are more harmonious, meanwhile, the independent box body is used for installing the screw compressor, maintenance of the screw compressor is facilitated, and external interference is reduced.

Description

Technical Field

[0001] The utility model relates to the field of air-conditioning heat pump units, in particular to a screw-type air-cooling heat pump unit with reduced noise. Background Art

[0002] Screw air-cooled units are widely used in hotels, hospitals, office buildings, factories and other comfort and process occasions, and have relatively high requirements for noise.

[0003] The noise of screw air-cooled units is mainly generated by the operation of the compressor. In order to solve the noise problem of the compressor, most manufacturers add a sound insulation box to the compressor. However, the structure of almost all screw air-cooled heat pump units is that the compressor is installed at the bottom of the condenser. The space is limited, and the effect of adding a sound insulation box to reduce noise is not obvious. Utility Model Content

[0004] The main purpose of the utility model is to provide a screw-type air-cooled heat pump unit with reduced noise, aiming to reduce the noise of the unit and effectively improve the user experience.

[0005] To achieve the above object, the utility model provides a screw-type air-cooled heat pump unit with reduced noise, comprising:

[0006] An air-cooled unit, the air-cooled unit is provided with a shell, a fan main unit is provided at the upper part of the shell, and a refrigeration cycle device is provided at the lower part of the shell;

[0007] A sealed box, which is arranged at one side of the air-cooled unit and has a height suitable for the air-cooled unit, and an installation cavity is arranged inside the sealed box, and a screw compressor is arranged in the installation cavity;

[0008] A finned radiator is arranged inside a sealed box, a fluid channel is arranged inside the finned radiator, the fluid channel is connected to a chilled water bypass of a refrigeration cycle device, and the finned radiator is used for heat exchange with the installation cavity.

[0009] In the actual design, a sealed box suitable for the size and structure of the air-cooled unit is separately set up, so that the overall unit structure and appearance are more coordinated. At the same time, a separate box is used to install the screw compressor, which also facilitates its maintenance and reduces external interference.

[0010] In the actual design, the screw compressor will generate a lot of heat when working. The chilled water after heat exchange in the air-cooled unit itself is used as the cold source of the finned radiator to achieve heat exchange with the installation cavity (that is, when the unit is normally turned on in the cooling mode, the water cooled by the unit itself is used as the cold source of the finned radiator), which effectively ensures the stable operation of the screw compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a semi-transparent schematic diagram of the utility model;

[0012] Figure 2 It is a side view of the utility model;

[0013] Figure 3 It is a schematic diagram of the sealed box wall;

[0014] Figure 4 It is a three-dimensional schematic diagram of the utility model.

[0015] In the figure, 1 is an air-cooled unit, 11 is an EC fan, 12 is a refrigeration cycle device, 2 is a sealed box, 21 is a mounting cavity, 22 is a screw compressor, 3 is a finned radiator, 31 is an independent refrigeration device, 41 is a sound-absorbing layer, 42 is a sheet metal layer, 5 is a temperature and humidity detection device, and 6 is a fan. DETAILED DESCRIPTION

[0016] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0018] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the utility model, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0019] like Figures 1 to 4 As shown, a screw-type air-cooled heat pump unit with reduced noise includes:

[0020] An air-cooled unit, the air-cooled unit is provided with a shell, a fan main unit is provided at the upper part of the shell, and a refrigeration cycle device 12 is provided at the lower part of the shell;

[0021] A sealed box 2, which is arranged at one side of the air-cooled unit and has a height suitable for the air-cooled unit. An installation cavity 21 is provided inside the sealed box 2, and a screw compressor 22 is provided in the installation cavity 21;

[0022] The finned radiator 3 is arranged inside the sealed box 2 . A fluid channel is arranged inside the finned radiator 3 . The fluid channel is connected to the refrigeration cycle device 12 . The finned radiator 3 is used for heat exchange with the installation cavity 21 .

[0023] In the actual design, a sealed box 2 of suitable size and structure is separately provided in the air-cooled unit, so that the overall unit structure and appearance are more coordinated. At the same time, a separate box is used to install the screw compressor 22, which also facilitates its maintenance and reduces external interference.

[0024] In the actual design, the screw compressor 22 will generate a lot of heat when working, and the heat exchange of the installation cavity 21 is realized through the refrigeration cycle device 12 of the air-cooled unit and the finned radiator 3 (that is, when the unit is normally turned on the refrigeration mode, the water refrigerated by the unit itself is used as the cold source of the finned radiator), which effectively ensures the stable operation of the screw compressor 22.

[0025] Specifically, the finned radiator 3 is also connected in parallel with an independent refrigeration device 31. When the air-cooled unit is shut down, an independent cooling circulation device can be used to prevent the heat generated by the screw compressor 22 after shutdown from being unable to be heat exchanged, resulting in damage to its internal parts.

[0026] In the embodiment of the utility model, the box wall of the sealed box 2 includes an inner sound-absorbing layer 41 and a sheet metal layer 42 attached to the sound-absorbing layer 41, and the sheet metal layer 42 has a predetermined thickness. The thicker sheet metal layer 42 can effectively reduce the resonance of the product, and the inner sound-absorbing layer 41 (absorbing sound waves and reducing resonance) effectively reduces the external dispersion of noise.

[0027] Specifically, the upper part, the middle part and the lower part of the installation cavity 21 are respectively provided with temperature and humidity detection devices 5 , and the temperature and humidity detection devices 5 are used to detect the temperature and humidity at different positions in the installation cavity 21 .

[0028] Specifically, when the temperature and humidity at any point in the installation cavity 21 exceeds the set value,

[0029] When the unit is in shutdown state, the independent refrigeration device 31 is started and the finned radiator starts to work;

[0030] Stop working when the temperature and humidity reach the set value.

[0031] Specifically, the sealed box 2 is further provided with a fan 6, and a shutter is provided at the air outlet of the fan 6. When the fan 6 is turned off, the shutter is in a closed state and the sealed box 2 is in a relatively closed state.

[0032] When the finned heat sink starts to work, the fan 6 is turned on;

[0033] When the unit is in the refrigeration mode, the independent refrigeration device of the finned radiator 3 is not started, and the bypass pipe of the unit's inlet and outlet water pipes is used as the cold source of the finned radiator to start heat exchange; when the temperature and humidity reach the set value, the unit stops working. When the finned radiator starts working, the fan 6 is turned on. Ensure that the compressor works safely and stably in the soundproof box.

[0034] Specifically, the sound absorbing layer 41 is made of a polymer sound absorbing material, which is polyurethane foam or a polyurethane foam composite layer structure. Of course, some existing materials can also be used, but the polymer sound absorbing material can effectively reduce the weight of the entire unit.

[0035] In the embodiment of the utility model, the fan host adopts EC fan 11. EC fan refers to a centrifugal fan using a digital brushless DC external rotor motor or a centrifugal fan using an EC motor, which has lower noise, further reducing the overall noise and improving the applicability and comfort of the product. The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A screw-type air-cooled heat pump unit with reduced noise, characterized in that: include: An air-cooled unit, the air-cooled unit is provided with a shell, a fan main unit is provided at the upper part of the shell, and a refrigeration cycle device is provided at the lower part of the shell; A sealed box, which is arranged at one side of the air-cooled unit and has a height suitable for the air-cooled unit, and an installation cavity is arranged inside the sealed box, and a screw compressor is arranged in the installation cavity; A finned radiator is arranged inside a sealed box, a fluid channel is arranged inside the finned radiator, the fluid channel is connected to a chilled water bypass of a refrigeration cycle device, and the finned radiator is used for heat exchange with the installation cavity.

2. The noise-reducing screw air-cooled heat pump unit according to claim 1, characterized in that: The finned radiator is also connected in parallel with an independent refrigeration device.

3. The noise-reducing screw air-cooled heat pump unit according to claim 1, characterized in that: The box wall of the sealed box includes an inner sound-absorbing layer and a sheet metal layer attached to the sound-absorbing layer, and the sheet metal layer has a predetermined thickness.

4. The noise-reducing screw air-cooled heat pump unit according to claim 1, characterized in that: The upper part, the middle part and the lower part of the installation cavity are respectively provided with temperature and humidity detection devices, and the temperature and humidity detection devices are used to detect the temperature and humidity at different positions in the installation cavity.

5. The noise-reducing screw air-cooled heat pump unit according to claim 4, characterized in that: When the temperature and humidity at any point in the installation chamber exceeds the set value, When the unit is stopped, the independent refrigeration device is started and the finned radiator starts working; Stop working when the temperature and humidity reach the set value.

6. The noise-reducing screw air-cooled heat pump unit according to claim 1, characterized in that: The sealed box is also provided with a fan, and a shutter is provided at the air outlet of the fan. When the fan is turned off, the shutter is in a closed state and the sealed box is in a relatively closed state.

7. The noise-reducing screw air-cooled heat pump unit according to claim 3, characterized in that: The sound absorbing layer is made of a high molecular sound absorbing material, and the high molecular sound absorbing material is polyurethane foam or a polyurethane foam composite layer structure.

8. The noise-reducing screw air-cooled heat pump unit according to claim 1, characterized in that: The fan host adopts an EC fan.

Images