CN113686050B - A modular heat pump unit and system - Google Patents
A modular heat pump unit and system Download PDFInfo
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- CN113686050B CN113686050B CN202110965367.7A CN202110965367A CN113686050B CN 113686050 B CN113686050 B CN 113686050B CN 202110965367 A CN202110965367 A CN 202110965367A CN 113686050 B CN113686050 B CN 113686050B
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- 238000009434 installation Methods 0.000 abstract description 2
- 238000010257 thawing Methods 0.000 description 18
- 230000002829 reductive effect Effects 0.000 description 12
- 238000005485 electric heating Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
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- 229920000742 Cotton Polymers 0.000 description 5
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- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/08—Removing frost by electric heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/14—Collecting or removing condensed and defrost water; Drip trays
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Other Air-Conditioning Systems (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
本发明提供一种模块化的热泵机组及其系统。热泵机组其包括热泵箱体，热泵箱体内设置若干个单体热泵模块的安装位，每个所述安装位上可安装一个单体热泵模块，若干个单体热泵模块并排设置，热泵箱体为标准化尺寸的箱体，单体热泵模块的水路循环系统具有水管及易拆卸的接口部件，当若干个所述单体热泵模块并排设置时，各个单体热泵模块的水路循环系统通过所述接口部件相互连接并组成连续的水路。所述单体热泵模块的数量为2个或2个以上，且各个单体热泵模块具有相同的结构和尺寸。通过将热泵机组的箱体设置为标准化的尺寸，方便地实现了热泵机组的堆叠，从而极大地降低了对土地的占用面积。
The present invention provides a modular heat pump unit and system thereof. The heat pump unit comprises a heat pump housing, in which a plurality of installation positions for single heat pump modules are arranged, each of which can be installed with a single heat pump module, and the plurality of single heat pump modules are arranged side by side. The heat pump housing is a housing of standardized size, and the water circulation system of the single heat pump module has a water pipe and an easily detachable interface component. When the plurality of single heat pump modules are arranged side by side, the water circulation systems of the single heat pump modules are interconnected through the interface component to form a continuous water circuit. The number of the single heat pump modules is 2 or more, and each single heat pump module has the same structure and size. By setting the housing of the heat pump unit to a standardized size, the stacking of the heat pump units is conveniently realized, thereby greatly reducing the occupied area of land.
Description
Technical Field
The invention relates to the field of heating ventilation and air conditioning, in particular to a heat pump unit and a system.
Background
The air source heat pump unit is widely applied to high-end buildings such as office buildings, business buildings and hotels, and is favored by people because refrigeration and heating can be simultaneously realized, and the working quantity and the working state of the unit are adjusted according to the heating or refrigerating requirements of the building. However, in order to meet the requirements of the building, when the number of the air source heat pump units is large, the occupied land area of the units is large, and the economical efficiency is reduced. The distance between the unit and the building is too small, and noise generated by the unit in operation can influence residents. In addition, the space between the units is smaller, and the form of side-in upper-air-out is often adopted, so that cold air is easily sucked again by an adjacent unit after descending, and a cold island effect is formed. Therefore, how to reduce the floor area of the heat pump unit, reduce noise and solve the problems caused by the cold island effect is a technical problem to be solved urgently in the field.
In order to solve the above technical problems, a solution for an energy building has been proposed. The air source heat pump units are independently built into a multi-layer energy building, and are arranged on each layer of the energy building so as to reduce occupation of land area and increase the space between the units during placement, thereby solving the problem of cold islands. However, the method needs to independently construct the energy building, so that the civil engineering cost is too high, the construction period is long, and the economical efficiency is not high.
CN109059343a discloses a modularized integral heat exchange refrigeration device, and specifically discloses that a heat pump unit is arranged in a container, the container is stacked to reduce occupation of land area, and sound insulation materials are added on the inner surface of the container to reduce the influence of noise. However, the technical scheme is only a preliminary technical scheme, and although the problem that the occupied land area is partially overlarge can be solved, no solution is provided for the problems of further reducing the cold island effect among units, thoroughly solving the noise problem, realizing the connection among modules, coordinating the work and the like.
Disclosure of Invention
In order to overcome the defects and the shortcomings of the prior art, the invention provides a modularized heat pump unit, which comprises a heat pump box body, wherein the heat pump box body is provided with a height in a first direction which is vertical to the ground, a width in a second direction which is vertical to the first direction and a thickness in a third direction which is vertical to both the first direction and the second direction, a plurality of mounting positions of single heat pump modules are arranged in the heat pump box body, one single heat pump module can be mounted on each mounting position, the single heat pump modules are arranged along the second direction, the heat pump box body is a box body with standardized size, the single heat pump module is provided with a compressor, a shell and tube heat exchanger, a fan and a waterway circulation system, wherein the fins of the fin heat exchanger extend along the first direction, and the fan is arranged on one side of the fin heat exchanger along the third direction, so that air flows from an opening on one side of the heat pump box body to an opening on one side of the heat pump box body along the third direction;
The waterway circulation system of each single heat pump module is provided with a water pipe and an easily-detachable interface component, and when a plurality of single heat pump modules are arranged side by side along the second direction, the waterway circulation systems of the single heat pump modules are mutually connected through the interface components and form a continuous waterway;
The number of the single heat pump modules is 2 or more, and each single heat pump module has the same structure and size.
Further, the number of the single heat pump modules is 3 to 6.
Further, the heat pump box body comprises a top plate, a ground plate, side wall plates and end wall plates, wherein openings are formed in the side wall plates, and correspond to the air inlets and the air outlets of the fin heat exchangers of the single heat pump modules.
Further, the heat pump housing has a connection structure facilitating continuous stacking thereof in the first direction.
Further, the opening part on the side wall plate of the heat pump box body is provided with the air valve, the angle of the air valve can be adjusted, and the blade angle of the air valve at the air outlet is upward so as to reflect the noise of the fan upward.
Further, the compressor and the fan are arranged on one side, the fan is arranged in the noise reduction box body, and the compressor is arranged in the sound insulation cover.
Furthermore, an inlet air quantity uniform distributor is arranged in front of the fin heat exchanger, and the inlet air quantity uniform distributor enables air to uniformly flow through fins of the fin heat exchanger.
Further, a path of incoming line control box is arranged on the heat pump box body, and the control box is connected with each single heat pump module and controls the single heat pump modules.
The invention also provides a modular heat pump unit system, which is formed by stacking units in a first direction perpendicular to the ground.
Further, the number of layers of the system stack is 3-6.
The invention can realize the following technical effects:
By setting the box body of the heat pump unit to be of a standardized size, the stacking of the heat pump unit is conveniently realized, so that the occupied area of the heat pump unit on the land is greatly reduced. The heat pump unit can be provided with a plurality of single heat pump modules according to the requirements, and the number of the modules is flexibly set, so that the heat pump units with different output powers can be matched and any combination can be realized. Each single heat pump module is a side inlet and a side outlet of an air flow path, so that a cold island effect is not generated, and the heat pump units are not affected after being stacked. The pipelines of the waterway circulation system of each single heat pump module are prefabricated in advance, the modules are not required to be installed on site, the modules are quickly combined into a complete pipeline system through the waterway interfaces which are easy to disassemble, accumulated errors can be automatically eliminated, and the time cost of site construction is greatly reduced. Through the noise reduction treatment to the monomer heat pump module, the influence of the noise of unit to nearby resident can greatly reduced. The defrosting water pan and the auxiliary defrosting system in the unit can thoroughly solve the problem of secondary freezing of defrosting water, and safety and heat exchange efficiency are improved. Through setting up the flow equalizing plate can evenly distribute the air to the heat transfer area of fin heat exchanger on, improved the heat exchange efficiency of system. Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic back view of a modularized heat pump unit provided by the invention.
Fig. 2 is a schematic front view of a modularized heat pump unit provided by the invention.
Fig. 3 is a schematic perspective view of a modularized heat pump unit provided by the invention.
Fig. 4 is a schematic top view of a modularized heat pump unit according to the present invention.
Fig. 5 is a schematic side view of a modularized heat pump unit according to the present invention.
Fig. 6 is a schematic perspective view of a single heat pump module of a modularized heat pump unit according to the present invention.
Fig. 7 is a schematic side view of a single heat pump module of a modularized heat pump unit according to the present invention.
Fig. 8 is a schematic top view of a single heat pump module of a modularized heat pump unit according to the present invention.
Fig. 9 is a schematic perspective view of a unit heat pump module of a modular heat pump unit equipped with a sound absorbing panel according to the present invention.
Fig. 10 (a) is a schematic side view of a unit heat pump module of a modular heat pump unit equipped with an acoustic panel according to the present invention.
Fig. 10 (b) is a schematic front view of a unit heat pump module of a modular heat pump unit equipped with an acoustic panel according to the present invention.
Fig. 11 (a) is a schematic front view of the acoustic panel of the present invention.
Fig. 11 (b) is a schematic side view of the acoustic panel of the present invention.
Fig. 11 (c) is a schematic plan view of the acoustic panel of the present invention.
Fig. 12 (a) is a schematic view of a noise reduction box in the present invention.
Fig. 12 (b) is a cross-sectional view A-A of fig. 12 (a).
Fig. 12 (c) is an enlarged view of the portion a in fig. 12 (b).
Fig. 12 (d) is an enlarged view of the portion B in fig. 12 (B).
Fig. 13 is a perspective view of a noise reduction box according to the present invention.
Fig. 14 is a schematic diagram of a noise propagation path.
Fig. 15 is a schematic front view of a water pipe (single) and clip structure of the heat pump unit of the present invention.
Fig. 16 is a top view of fig. 15 (with the clip structure omitted).
Fig. 17 is a left side view of fig. 15 (the clip structure is omitted).
Fig. 18 is a schematic front view of two water pipes connected.
Fig. 19 is a cross-sectional view A-A of fig. 18.
Fig. 20 is an enlarged view of a portion B of fig. 19.
Fig. 21 (a) is a schematic front view of the clip structure.
Fig. 21 (b) is a sectional view A-A of fig. 21 (a).
Fig. 22 (a) is a schematic front view of a mechanical tee assembly.
Fig. 22 (b) is a cross-sectional view A-A of fig. 22 (a).
Fig. 22 (c) is a B-B cross-sectional view of fig. 22 (a).
Fig. 23 is a perspective view of a mechanical tee assembly.
Fig. 24 is a schematic structural view of the mechanical three-way assembly after being connected with a heat pump unit shell pipe.
Fig. 25 is an enlarged view of a portion C of fig. 24.
Fig. 26 is a schematic top view of a heat pump unit equipped with flow equalization plates.
Fig. 27 (a) is a schematic front view of the flow equalization plate.
Fig. 27 (b) is a left side view of fig. 27 (a).
Fig. 27 (c) is a top view of fig. 27 (a).
Fig. 28 is a schematic perspective view of a heat pump unit equipped with flow equalization plates.
Fig. 29 is a schematic side view of a heat pump unit equipped with a water tray.
Fig. 30 (a) is a schematic front view of the drip tray.
Fig. 30 (b) is a sectional view A-A of fig. 30 (a).
Fig. 30 (c) is a left side view of fig. 30 (a).
Fig. 30 (d) is a top view of fig. 30 (a).
1-Heat pump box, 2-single heat pump module, 3-one-way inlet control box, 4-inlet air valve, 5-outlet air valve, 6-access door, 7-water pipe component, 8-defrosting water collecting main pipe, 9-compressor, 10-fan, 11-shell-and-tube heat exchanger, 12-fin heat exchanger, 201-acoustic panel, 202-frame coaming, 203-reinforcing rib, 21-deflector, 22-porous plate, 23-superfine fiber acoustic material, 901-noise reduction box, 91-inner plate, 92-panel, 93-acoustic material, 94-top plate component, 95-side plate assembly, 96-bottom plate assembly, 71-water pipe, 72-clamp structure, 73-mechanical tee assembly, 74 heat pump unit shell pipe connecting pipe, 71-1 groove, 72-5-boss, 72-6-tip boss, 72-1-half ring, 72-2-lug, 72-3-bolt, 72-4-rubber sealing ring, 3-1 rubber sealing gasket, 33 flow equalizing plate, 33-1-diaphragm, 33-2-vertical diaphragm, 44-1-guard plate, 44-2-surrounding groove, 44-3-inclined plane, 44-4-drain pipe, 44-5-conical structure, 44-6-heat preservation layer, 44-7-electric heating belt
Detailed Description
The construction and operation of the present patent will be further described in detail with reference to the accompanying drawings, which are provided solely for the purpose of better understanding of the present patent and are not to be construed as limiting the present patent. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
In the description of the present invention, it should be noted that, if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are used, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the indicated apparatus or element must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, or may be directly connected, or may be indirectly connected through an intermediate medium, or may be in communication with the interior of two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
Fig. 1 to 4 show a modularized heat pump unit, which comprises a heat pump box 1, wherein the heat pump box 1 is provided with a height in a first direction vertical to the ground, a width in a second direction vertical to the first direction and a thickness in a third direction vertical to both the first direction and the second direction, a plurality of mounting positions of single heat pump modules 2 are arranged in the heat pump box, one single heat pump module 2 can be mounted on each mounting position, the single heat pump modules 2 are arranged along the second direction, and the heat pump box 1 is a box body with standardized size, for example, the size of the heat pump box 1 can be consistent with an international shipping container. The heat pump casing 1 is capable of stacking a plurality of heat pump casings due to its standardized size, and has a connection structure on each heat pump casing that facilitates its continuous stacking in the first direction.
Fig. 5 to 8 show a unit heat pump module 2 provided in the modular heat pump unit, the unit heat pump module 2 having a compressor 9, a shell-and-tube heat exchanger 11, a fin heat exchanger 12, a fan 10, and a water circuit circulation system. Wherein the fins of the fin heat exchanger 12 extend in a first direction, and the fan 10 is disposed at one side of the fin heat exchanger 12 in a third direction, so that air flows from an opening at one side of the heat pump case 1 through the fin heat exchanger 12 in the third direction and toward an opening at the other side of the heat pump case 1. The fins of the fin heat exchanger 12 are extended along the first direction, so that the defrosting water can be smoothly discharged under the action of gravity, and the defrosting water is prevented from being frozen again and has adverse effects on the unit.
The waterway circulation system of the single heat pump module 2 is provided with a water pipe part 7 and an easily detachable interface part, and when a plurality of single heat pump modules 2 are arranged side by side along the second direction, the waterway circulation systems of the single heat pump modules 2 are mutually connected through the interface parts and form a continuous waterway.
The number of the single heat pump modules is 2 or more, and in an optimized embodiment, the number of the single heat pump modules is 3-6. And each of the individual heat pump modules has the same structure and size. It will be appreciated that the number of the single heat pump modules may be increased according to actual needs, for example, to 8, 10 or more. The above amounts are exemplary only and do not limit the scope of the claims.
Specifically, the heat pump box 1 includes a top plate, a ground plate, a side wall plate, and an end wall plate, where the side wall plate has an opening, and the opening corresponds to an air inlet and an air outlet of the fin heat exchanger 12 of the single heat pump module 2. An inlet damper 4 and an outlet damper 5 are provided on the openings. In other embodiments, a venetian blind may be used in place of the damper. In an optimized embodiment, the blade angle on the air valve can be adjusted, which has an important meaning for reducing noise, for example, when the blade angle of the outlet air valve 5 is adjusted to be inclined upwards, noise generated by the fan is reflected upwards by the blade of the outlet air valve to a space above 2 meters, and the activity space of a person is generally below 2 meters, so that the influence of noise generated by the fan is greatly reduced.
In order to further reduce the influence of noise, the compressor and the fan are provided at one side of the unit heat pump module 2, and the fan is provided in the noise reduction box, and the compressor is provided in the soundproof cover so as to reduce noise generated by these two noise parts.
In a specific embodiment, an inlet air volume distributor is arranged in front of the fin heat exchanger, and the inlet air volume distributor enables air to uniformly flow through fins of the fin heat exchanger.
Be provided with a line inlet control box 3 on the heat pump box, a line inlet control box 3 with every monomer heat pump module is connected, and just so can realize controlling all monomer heat pump modules through a control box, with the complexity and the cost of reduction circuit, and be favorable to all monomer heat pump modules to carry out cooperative control.
The construction and operation of the water pipe member 7 and the easily detachable joint member in the present invention will be explained with reference to fig. 15 to 25. The water pipe part 7 in the invention has the characteristics of quick connection and automatic error elimination. Specifically, the water pipe component 7 includes a water pipe 71 and a clip structure 72 connecting two adjacent water pipes, and the clip structure 72 is the easily detachable connector component. The end part of the water pipe 71 is provided with a groove 71-1, the clamp structure 72 is provided with two semi-rings 72-1, two ends of the semi-rings 72-1 are provided with lugs 72-2, two sides of the semi-rings 72-1 are provided with bosses 72-5 protruding along the circumferential direction, an inner groove is formed between the bosses 72-5, and a rubber sealing ring 72-4 is arranged in the groove.
Fig. 18 shows a structural view of two water pipes 71 connected by a clip structure 72. The two water pipes 71 are connected end to end, bosses 72-5 of two semi-rings 72-1 of the clamp structure 72 extend into grooves 71-1 at the ends of the water pipes at the two sides respectively, the two semi-rings are fixed through connecting pieces, and the two semi-rings form a ring and realize connection of the water pipes at the two sides. In a specific embodiment, the connection may be a bolt 2-3.
As shown in fig. 20, both sides of the rubber packing 72-4 have tip protrusions 72-6 extending in the circumferential direction, which are abutted against edges of the grooves 71-1 of the water pipe end. Since the rubber seal 72-4 has elasticity, it is possible to form a good seal to the water pipe connection and to eliminate errors in the size and assembly at the time of water pipe connection.
Specifically, the water pipe 71 is further provided with a mechanical three-way assembly 73, and the mechanical three-way assembly 73 is used for being connected with a heat pump unit shell pipe joint 74. Fig. 22-25 show the specific construction and assembly of the mechanical three-way assembly 3, wherein a rubber gasket 73-1 is provided at the connection of the mechanical three-way assembly 73 and the water pipe 71, so as to achieve a seal between the water pipe 71 and the mechanical three-way assembly 73. Specifically, as shown in fig. 25, the diameter of the circular tube of the mechanical tee assembly 3 is a, the aperture of the water tube 1 matched with the circular tube is slightly larger than a, a gap of 1-2 mm is formed between the circular tube and the water tube for adjusting errors, and the gap is sealed by an inner rubber sealing gasket 3-1 to prevent water leakage.
It will be appreciated that the water pipe 1 may be a straight pipe or a curved pipe, and may be connected and fixed by a clip structure as long as both ends thereof have grooves.
The water pipe is connected through the clamp structure, the rubber ring in the clamp structure has certain elasticity and a certain clearance, so that various errors in the water pipe processing and assembling process can be made up, the production difficulty and the requirement on the operation level of workers are greatly reduced, quick installation between water pipes can be realized, and the assembly device is very suitable for the on-site waterway assembling process of various heat pump units.
The noise reduction structure of the heat pump unit of the present invention is explained in detail with reference to fig. 8 to 14.
As shown in fig. 8, 9 and 10, a fan silencer is disposed downstream of the fan 10 of the heat pump unit in the air flow direction, and the fan silencer includes a frame shroud 202 and a plurality of sound absorbing plates 201, wherein the frame shroud 202 is disposed around the fan 10, and the sound absorbing plates 201 are disposed on the frame shroud 202 at intervals.
Fig. 11 shows a specific structure of the sound absorbing panel. The sound absorbing plate 201 is composed of the baffle 21 and the perforated plate 22, and the sound absorbing plate 201 extends in the direction of the air flow so that the air flow passes through the baffle 21 and then passes through the perforated plate 22.
The sound absorbing plate is also provided with superfine fiber sound absorbing materials 23. In a specific embodiment, the superfine fiber sound-absorbing material 23 is in a long strip shape, and extends from one side of the sound-absorbing board to the other side, and in an optimized embodiment, the superfine fiber sound-absorbing material 23 is in two or more than two. The sound absorbing plates 201 are disposed on the frame coaming at equal intervals L. The distance L can be flexibly adjusted according to the requirements. Specifically, the baffle 21 is provided with a plurality of flow guiding protrusions. The frame coaming is provided with a reinforcing rib 203, and the reinforcing rib 203 is used for reinforcing and fixing the frame coaming 202.
As shown in fig. 9, the sound absorbing plate 201 has a height in a direction perpendicular to the air flow direction, which corresponds to the height of the air outlet.
Fans are the main noise source of air source heat pump units, and therefore noise reduction for fans is one of the main objectives. The working principle of the fan silencer is that when the fan rotates, air (containing noise) is flushed onto the perforated plate through the guide plate, part of the air is absorbed by the sound absorbing material inside the perforated plate, and part of the air is reflected to the sound absorbing plate beside the perforated plate, so that the noise is gradually attenuated repeatedly, and the noise is greatly reduced by a decibel value when the noise is transmitted to the outside of the silencer along with the air. Fig. 14 shows the noise propagation and attenuation process.
The compressor is another main noise source of the heat pump unit, so it is also important to control the noise of the compressor. As shown in fig. 12 and 13, the compressor of the heat pump unit disclosed in the present invention is disposed in a noise reduction box 901, the noise reduction box 901 includes a top plate assembly 94, a side plate assembly 95, and a bottom plate assembly 96, wherein the side plate assembly 95 includes an inner plate 91 and a face plate 92, and a sound insulation material is disposed between the inner plate 91 and the face plate 92.
The top plate assembly 94 and the bottom plate assembly 96 are provided with a clamping groove, and as shown in fig. 12c and 12d, the side plates can be inlaid in the clamping groove and form a labyrinth seal.
The compressor noise reduction principle in this embodiment is mainly two ways of absorption and blocking propagation. The compressor is enclosed by a noise reduction box, and when the compressor works, the mechanical friction and the periodic meshing of the dynamic and static vortex plates and the electromagnetic sound of the motor are mixed together to form a complex noise spectrum. The noise from the compressor is absorbed by the sound insulation cotton through the through holes on the inner plate, and is transmitted to the air by the panel to block the transmission part, and the noise is greatly attenuated by the multi-layer treatment, and the transmission path is shown in fig. 14. In addition, the grooves of the bottom plate and the top plate form labyrinth seals, so that noise leakage can be reduced.
Further, the heat pump unit is further provided with an electric cabinet, and the electric cabinet is positioned right in front of the compressor and can further block noise transmission of the compressor.
In this embodiment, the compressor and the fan are disposed on the same side of the heat pump unit.
And sound absorbing materials are further arranged on the inner wall of the box body of the heat pump unit so as to further reduce noise of the heat pump unit.
The specific structure and operation principle of the air volume uniform distributor of the present invention will be explained with reference to fig. 26 to 28. The air quantity uniform distributor in the invention is specifically a flow equalizing plate 33. Two triangular areas with a triangular cross section on a plane parallel to the ground are formed between the fin heat exchanger 2 and the heat pump box body 1, and a flow equalizing plate 33 is arranged in the triangular areas.
The flow equalizing plate 33 is provided with a plurality of diaphragm plates 33-1 and vertical partition plates 33-2, and a plurality of air channels 33-3 are separated between the diaphragm plates 33-1 and the vertical partition plates 33-2. Specifically, the section of the flow equalizing plate on a plane parallel to the ground is triangular or approximately triangular, and the surface of the hypotenuse c of the triangle is aligned with the surface of one side of the fin heat exchanger facing the air inlet. And under the action of the flow equalizing plate, air is uniformly distributed on the surface of the fin heat exchanger.
It can be seen intuitively that the transverse partition plates 33-1 on the flow equalizing plate are parallel to each other, and the vertical partition plates 33-2 are also parallel to each other.
Specifically, the flow equalization plate is a plastic or PVC component. It should be understood that the flow equalization plate may be made of other suitable materials, such as sheet metal materials, and those skilled in the art may flexibly select the flow equalization plate according to actual needs, and the foregoing selection of materials is only exemplary, and does not limit the scope of the claims of the present invention.
Specifically, the cross section of the flow equalizing plate is a right triangle. It will be appreciated that the cross-sectional shape may also be approximately right triangle in shape.
Under the action of the flow equalizing plate 33, air entering from the air inlet of the heat pump unit can be uniformly distributed on the surface of the fin heat exchanger, so that the heat exchange capacity of the fin heat exchanger can be exerted to the greatest extent, and the heat exchange efficiency is improved.
The structure and operation of the defrosting device and the water receiving tray according to the present invention will be explained with reference to fig. 29 to 30.
The heat pump unit of the present invention further has a water pan 44, the water pan 44 being located at a lower portion of the fins of the fin heat exchanger 12 and extending in a third direction.
The fins of the fin heat exchanger 12 extend in a first direction with the ends of the fins extending into the drip tray 44.
The water pan 44 has a guard plate 44-1 and a surrounding groove 44-2 which surround the end portions of the fins and form a closed cavity. Specifically, as shown in fig. 30 (b), the guard plate 44-1 is fixed on the side surface of the peripheral groove 44-2 of the water-receiving tray, the guard plate 44-1 extends upward and inclines toward the fin, and when the fin goes deep into the water-receiving tray, the guard plate 44-1 can overlap the side surface of the fin, so that the water-receiving tray forms a closed cavity for wrapping the fin, that is, the defrosting water is convenient to fall into the water-receiving tray, and heat dissipation is prevented.
And the frost formed on the fins forms water after defrosting and flows downwards into the cavity formed by the water receiving disc along the fins.
The bottom of the water receiving tray is provided with an inclined plane 44-3 and a drain pipe 44-4 thereof, the inlet of the drain pipe 44-4 is positioned at or near the lowest position of the inclined plane, and the defrosting water on the fins is collected to the lowest position along the inclined plane after entering the water receiving tray and is discharged from the drain pipe. As shown in fig. 30 (a), the inclined plane forms an angle α with the horizontal plane, and the angle α may be set as required, for example, 15 ° -60 °, and in an optimized embodiment, 30 ° -45 °.
As shown in fig. 30 (b) and 30 (d), the bottom of the water pan is provided with a plurality of high-density tapered structures 44-5 or protrusions. The conical structure 44-5 or the protrusions function to prevent the generation of a water film and thus control the generation of water droplets, and finally achieve the purpose of not hanging water droplets on the side, i.e. not freezing secondarily. Therefore, when the defrosting water flows into the water receiving tray, even if a water film is formed, the defrosting water is punctured by the cone-shaped structure or the bulge, thereby preventing the generation of the water film.
In an optimized embodiment, the inner wall of the water receiving disc can be sprayed with a hydrophobic material, under the action of the hydrophobic material, a water film is more difficult to adhere to the surface of the water receiving disc, and water drops easily slide off from the surface of the inner cavity of the water receiving disc, so that the drainage of defrosting water is facilitated.
The water pan is usually made of sheet metal, and because of its large specific heat capacity and strong heat absorbing capacity, its surface temperature is far lower than ambient temperature in cold regions, and in order to prevent the heat of the defrosting water from being absorbed by the water pan, an insulating layer 44-6 may be attached to the periphery of the water pan, and in a specific embodiment, the insulating layer may be insulating cotton or other insulating materials. Meanwhile, an electric heating belt 44-7 is attached to the bottom of the water pan, and the electric heating belt 44-7 is next to the outside of the water pan and wraps the sponge. In an optimized embodiment, a temperature sensor is arranged in the water receiving disc of the unit, the temperature sensor detects the temperature in the cavity of the water receiving disc, and the electric heating belt is automatically controlled according to the temperature detected by the sensor. Under extremely cold weather, the electric heating belt is used for assisting in supplying heat to ensure that the surface temperature of the water receiving tray is not lower than 0 ℃, so that the defrosting water is prevented from being frozen for the second time. The heat preservation layer can prevent the heat of the electric heating belt from being rapidly emitted into the air.
After the heat pump unit starts the defrosting mode, the frost on the fin heat exchanger flows into the water receiving disc along the aluminum foil in the form of liquid water, the bottom of the water receiving disc is provided with an inclined plane, one side of the water receiving disc is high, the other side of the water receiving disc is low, the water flow is converged to the lowest depression along the inclined plane, and then the water is discharged through the drain pipe, so that water is prevented from accumulating in the water receiving disc and freezing for the second time. The defrosting water drops into the water collecting disc in the form of water flow or water drops, in order to prevent the water flow/water drops from splashing into water foam and small water drops, a high-density conical structure is fixed at the bottom of the water collecting disc, water films are prevented from being generated, water drops are further controlled to be generated, and finally the purpose that the water drops are not hung on the side surface is achieved, namely, secondary freezing is avoided. The heat preservation cotton is stuck to the periphery of the water receiving disc, the electric heating belt is stuck to the bottom of the water receiving disc, the sponge is wrapped outside the water receiving disc by the electric heating belt, the surface temperature of the water receiving disc is not lower than 0 ℃ through auxiliary heat supply of the electric heating belt in extremely cold weather, and the heat of electric heating can be prevented from being rapidly emitted into the air through the effect of the heat preservation cotton. In addition, the two side guard plates are fixed on the side face of the water receiving disc, and a closed cavity is formed between the two side guard plates and the fin heat exchanger, so that heat dissipation is greatly reduced. The electric heating belt, the heat-insulating cotton, the guard plate, the inner hydrophobic material, the conical structure and the like thoroughly solve the phenomenon of secondary freezing of defrosting water.
The heat pump unit has the beneficial effects that the heat pump unit is conveniently stacked by setting the box body of the heat pump unit to be of a standardized size, so that the occupied area of the heat pump unit on the land is greatly reduced. The heat pump unit can be provided with a plurality of single heat pump modules according to the requirements, and the number of the modules is flexibly set, so that the heat pump units with different output powers can be matched and any combination can be realized. Each single heat pump module is a side inlet and a side outlet of an air flow path, so that a cold island effect is not generated, and the heat pump units are not affected after being stacked. The pipelines of the waterway circulation system of each single heat pump module are prefabricated in advance, the modules are not required to be installed on site, and the modules are quickly combined into a complete pipeline system through the waterway interfaces which are easy to disassemble, so that the time cost of site construction is greatly reduced. Through the noise reduction treatment to the monomer heat pump module, the influence of the noise of unit to nearby resident can greatly reduced.
Example 2
The present embodiment discloses a modular heat pump unit system formed by stacking the modular heat pump units disclosed in embodiment 1 in a first direction perpendicular to the ground. The number of layers stacked in the preferred embodiment is 3-6.
The above embodiments are only for illustrating the present invention, wherein the structure, connection mode, manufacturing process, etc. of each component may be changed, and all equivalent changes and modifications performed on the basis of the present technical solution should not be excluded from the protection scope of the present invention.
Claims (8)
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| JP6225034B2 (en) * | 2014-01-15 | 2017-11-01 | 北越工業株式会社 | Sound inlet / outlet structure of soundproof box |
| CN105737634A (en) * | 2014-12-11 | 2016-07-06 | 丹佛斯微通道换热器（嘉兴）有限公司 | Heat exchanger, heat exchange module, heat exchange device and heat source unit |
| CN108375245B (en) * | 2018-01-17 | 2023-12-15 | 北京四季通能源科技有限公司 | Air source heat pump evaporator tower and air source heat pump system |
| NZ770289A (en) * | 2018-07-20 | 2022-11-25 | Mitsubishi Electric Corp | Heat-pump hot-water supply outdoor unit |
| CN210318979U (en) * | 2019-05-30 | 2020-04-14 | 山东亿佰通机械股份有限公司 | Tee bend clamp and have joint connection prefab of this clamp |
| CN210343504U (en) * | 2019-08-19 | 2020-04-17 | 中国人民解放军32296部队 | Noise and radiation prevention and control device for vehicle-mounted generator |
| CN211316645U (en) * | 2019-11-07 | 2020-08-21 | 北京华誉能源技术股份有限公司 | Air source heat pump unit and heating system |
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