Acoustic enclosure of air source heat pump

Abstract

The utility model relates to the field of heat pumps, in particular to an air source heat pump acoustic shield which comprises an air inlet face, the air inlet face is divided into an upper air inlet and a lower air inlet through an electric rotating door, the upper air inlet is provided with a first temperature sensor and a first fan, and the lower air inlet is provided with a second temperature sensor and a second fan. An air guide cylinder is arranged on the outer side of the air outlet surface; and the controller judges whether the temperature data collected by the first temperature sensor and the second temperature sensor is within an allowable temperature difference range or not, and automatically controls the position of the electric revolving door and starting and stopping of the first fan and the second fan according to the judgment result. Noise pollution of the heat pump can be reduced, a comfortable living environment can be created, and through optimization of the positions of the air inlet and the air outlet and automatic control of the electric rotating door and the air inlet draught fan, the air inlet and exhaust amount can be increased, the air inlet and exhaust short-circuit risk is reduced, and the operation energy efficiency of a unit is improved.

Description

Technical Field

[0001] The utility model relates to the field of heat pumps, and particularly to an air source heat pump sound insulation cover. Background Art

[0002] An air source heat pump is a device that uses air thermal energy for refrigeration and heating, and is also known as an air-cooled heat pump. Its working principle is mainly based on the reverse Carnot cycle. By consuming a small amount of electric energy, the compressor is driven to work. Through a series of heat exchange processes, the thermal energy in the air is extracted and directly utilized.

[0003] When the air source heat pump operates, there is a large amount of noise, which seriously affects the physical and mental health of building users. In some projects, sound insulation covers and silencing louvers have to be used to reduce the noise pollution of the heat pump. However, the sound insulation cover will cause the reduction of the intake and exhaust areas, the decrease of the air volume, and affect the performance of the unit. An unreasonable structure design of the sound insulation cover will also lead to the short circuit of the intake and exhaust of the unit. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art that there is a large amount of noise when the air source heat pump operates, and setting a sound insulation cover will cause the decrease of the air volume, and to provide an air source heat pump sound insulation cover.

[0005] In the first aspect, the utility model provides an air source heat pump sound insulation cover, including

[0006] An air inlet surface, which is divided into an upper air inlet and a lower air inlet by an electric rotating door. A first temperature sensor and a first fan are arranged at the upper air inlet, and a second temperature sensor and a second fan are arranged at the lower air inlet;

[0007] An air outlet surface, with a wind guide cylinder arranged outside the air outlet surface;

[0008] A controller, which judges whether the temperature data collected by the first temperature sensor and the second temperature sensor are within the allowable temperature difference range, and automatically controls the position of the electric rotating door and the opening and closing of the first fan and the second fan according to the judgment result.

[0009] Preferably, the wind guide cylinder is arranged obliquely upward at an angle of 40 - 60 degrees.

[0010] Preferably, the positions of the electric rotating door include perpendicular to the air inlet surface, blocking the upper air inlet, and blocking the lower air inlet.

[0011] Preferably, the electric rotating door includes a door panel in a plate-like structure, and the door panel can block the upper air inlet and the lower air inlet.

[0012] Preferably, the air inlet surface is arranged on three sides of the sound insulation cover, the air outlet surface is located on the top surface of the sound insulation cover, and the air guide cylinder is inclined away from the air inlet surface.

[0013] Preferably, sound-absorbing louvers are arranged outside the air inlet surface.

[0014] Preferably, a sound-absorbing plate is arranged at one end of the air guide cylinder far from the air outlet surface.

[0015] Preferably, the sound insulation cover further includes a photovoltaic panel, which is arranged on the upper part of the sound insulation cover and can supply power to the controller, the first temperature sensor, the second temperature sensor, the first fan, and the second fan.

[0016] Preferably, the sound insulation cover further includes a water collecting tray, a drain pipe is connected to the water collecting tray, electric tracing is arranged in the area of the water collecting tray and the drain pipe, and the photovoltaic panel can supply power to the electric tracing storage battery.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] The present utility model can not only reduce the noise pollution of the heat pump and create a comfortable living environment, but also improve the air inlet and outlet air volumes, reduce the risk of short-circuit of the air inlet and outlet, and improve the operating energy efficiency of the unit through the optimization of the positions of the air inlet and outlet, the automatic control of the electric rotary door and the air inlet fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic cross-sectional view of the sound insulation cover structure of the present utility model Figure 1 。

[0020] Figure 2 is a schematic cross-sectional view of the sound insulation cover structure of the present utility model Figure 2 。

[0021] Figure 3 is a cross-sectional view when the electric rotary door is perpendicular to the air inlet surface under the heat pump refrigeration condition.

[0022] Figure 4 is a cross-sectional view when the electric rotary door blocks the upper air inlet under the heat pump refrigeration condition.

[0023] Figure 5 is a cross-sectional view when the electric rotary door is perpendicular to the air inlet surface under the heat pump heating condition.

[0024] Figure 6 is a cross-sectional view when the electric rotary door blocks the lower air inlet under the heat pump heating condition.

[0025] Markings in the figure:

[0026] 1 - Heat pump unit, 2 - Sound insulation cover, 3 - Air duct, 4 - Sound absorption panel, 5 - Controller, 6 - Electric heating battery, 7 - Photovoltaic panel, 8 - Electric wire, 91 - First temperature sensor, 92 - Second temperature sensor, 10 - Sound absorption louvers, 11 - Fan, 111 - First fan, 112 - Second fan, 121 - Upper air inlet, 122 - Lower air inlet, 13 - Electric revolving door, 14 - Electric heating, 15 - Water collecting tray, 16 - Drain pipe. Specific embodiments

[0027] The following further describes the present utility model in detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present utility model to the following embodiments. All technologies implemented based on the content of the present utility model belong to the scope of the present utility model.

[0028] In the description of the specific embodiments of the present utility model, without special explanation, the expression terms indicating the orientation or positional relationship such as "upper", "lower", "left", "right", "center", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product / device / equipment of the present utility model is usually used and placed. These terms of orientation or positional relationship are only for the convenience of describing the solution of the present utility model or simplifying the description in the specific embodiments, so as to facilitate technicians to quickly understand the solution, rather than indicating or implying that a specific device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship. Therefore, it should not be construed as a limitation to the present utility model.

[0029] In addition, if terms such as "horizontal", "vertical", "hanging", "parallel", etc. appear, it does not mean that the corresponding device / component / element is required to be absolutely horizontal or vertical or hanging or parallel, but can be slightly inclined or deviated. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. Or, it can be simply understood that the corresponding device / component / element is arranged in the directions of "horizontal", "vertical", "hanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still play its role in the solution of the present utility model.

[0030] In addition, the expressions such as "first", "second", "third", etc. in the terms are only used to distinguish the description of the same or similar components, and should not be construed as emphasizing or implying the relative importance of specific components.

[0031] In addition, in the description of the embodiments of the present utility model, "several", "multiple", and "a number of" represent at least two. It can be any case such as 2, 3, 4, 5, 6, 7, 8, 9, etc., and can even be a case of more than 9.

[0032] In addition, in the description of the technical solution of the present utility model, unless otherwise clearly specified / defined / restricted, where the terms "set", "installed", "connected", "coupled", "provided with", "laid", "arranged" appear, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection, and can be connection means commonly used in the art such as welding, riveting, bolting, threaded connection, etc. Such a connection can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components.

[0033] Embodiment 1

[0034] As Figure 1-2 shown, an air source heat pump sound insulation cover 2 includes structures such as an air inlet surface, an air outlet surface, and a controller 5.

[0035] The air inlet surface is usually located on the side of the sound insulation cover 2, and the air inlet surface is used for air intake. The number of the air inlet surfaces can be 1 - 4, preferably 3, and the number of the air inlet surfaces is determined according to specific sound insulation requirements. In an optional solution, a silencing louver 10 can be provided outside the air inlet surface, and the silencing louver 10 can reduce the propagation of noise at the air inlet.

[0036] Each of the air inlet surfaces includes an upper air inlet 121 and a lower air inlet 122. An electric rotating door 13 is provided between the upper air inlet 121 and the lower air inlet 122. In the vertical direction, the upper air inlet 121, the electric rotating door 13, and the lower air inlet 122 are arranged in sequence from top to bottom. In an alternative embodiment, the electric rotating door 13 includes a door panel in the shape of a plate structure, and the door panel can block the upper air inlet 121 and the lower air inlet 122. Specifically, the electric rotating door 13 can rotate to change its position relative to the air inlet surface. In an alternative embodiment, the positions of the electric rotating door 13 can include being perpendicular to the air inlet surface, blocking the upper air inlet 121, blocking the lower air inlet 122, etc. Being perpendicular to the air inlet surface means that the electric rotating door 13 does not block the upper air inlet 121 nor the lower air inlet 122, and both the upper air inlet 121 and the lower air inlet 122 can intake air; blocking the upper air inlet 121 means that the electric rotating door 13 only blocks the upper air inlet 121 and does not block the lower air inlet 122, and only the lower air inlet 122 intakes air; blocking the lower air inlet 122 means that the electric rotating door 13 only blocks the lower air inlet 122 and does not block the upper air inlet 121, and only the upper air inlet 121 intakes air.

[0037] Moreover, a first temperature sensor 91 and a first fan 111 are provided at the upper air inlet 121, and a second temperature sensor 92 and a second fan 112 are provided at the lower air inlet 122. The first temperature sensor 91 is used to collect temperature data near the upper air inlet 121 and transmit it to the controller 5. The second temperature sensor 92 is used to collect temperature data near the lower air inlet 122 and transmit it to the controller 5. The first fan 111 and the second fan 112 are used to overcome the resistance of the sound-absorbing louvers 10 and increase the air intake volume. The first fan 111 and the second fan 112 are also connected to the controller 5. The first fan 111 and the second fan 112 can adopt DC fans.

[0038] The air outlet surface can be located on the top surface of the sound insulation cover 2. A wind guide cylinder 3 is provided outside the air outlet surface. The wind guide cylinder 3 can discharge the cold air in an organized manner. The wind guide cylinder 3 can be arranged to incline 40 - 60 degrees upward, preferably about 45 degrees. The wind guide cylinder 3 is preferably arranged away from the air inlet surface. For example, when the air inlet surface is three side surfaces, the wind guide cylinder 3 faces another side surface other than the three air inlet surfaces. In an alternative embodiment, a sound-absorbing plate 4 can be provided at one end of the wind guide cylinder 3 away from the air outlet surface, and the sound-absorbing plate 4 can reduce the propagation of noise by the wind guide cylinder 3.

[0039] The controller 5 determines whether the temperature data collected by the first temperature sensor 91 and the second temperature sensor 92 is within the allowable temperature difference range, and automatically controls the position of the electric revolving door 13 and the opening and closing of the first fan 111 and the second fan 112 according to the judgment result. The allowable temperature difference range can be determined according to the energy efficiency gap value of the unit. The allowable temperature difference range is a preset value, usually within 4 degrees, preferably 2 - 3 degrees. The controller 5 can control the position of the electric revolving door 13 by controlling the rotation angle of the rotating structure of the electric revolving door 13. The controller 5 can be implemented by only hardware circuits and components, or can be implemented by a software system.

[0040] In a preferred embodiment, a photovoltaic panel 7 can also be included. The photovoltaic panel 7 is arranged on the upper part of the sound insulation cover 2. The photovoltaic panel 7 can supply power to the controller 5, the first temperature sensor 91, the second temperature sensor 92, the first fan 111, and the second fan 112. Solar energy drives the power supply of the first fan 111 and the second fan 112, which can increase the heat exchange air volume of the unit and is also beneficial to optimizing the environmental conditions for the operation of the heat pump unit.

[0041] The added sound insulation cover 2 of the present utility model can not only reduce the noise pollution of the heat pump and create a comfortable living environment, but also optimize the position of the air outlet through the air guide cylinder 3, and then automatically control the electric revolving door 13 through the controller 5, and then can optimize the position of the air inlet and the opening and closing of the fan according to the air temperature difference of different air inlets, which can improve the air intake and exhaust volume, avoid the short - circuit of air intake and exhaust, and improve the energy efficiency of the unit.

[0042] Embodiment 2

[0043] On the basis of Embodiment 1, in this embodiment, a water collecting tray 15 is further arranged below the outdoor heat exchanger of the heat pump unit 1. The water collecting tray 15 is connected with a drain pipe 16, and the drain pipe 16 is used to drain defrosting water or rainwater. An electric heat tracing 14 is arranged in the area where the water collecting tray 15 and the drain pipe 16 are located (i.e., the inside or surface of the water collecting tray 15 and the drain pipe 16), and the electric heat tracing 14 is used to prevent the water collecting tray 15 and the drain pipe 16 from freezing. The photovoltaic panel 7 can supply power to the electric heat tracing battery 6, and the electric heat tracing battery 6 can supply power to the electric heat tracing 14. For example: the power generated by the photovoltaic panel 7 is transmitted to the controller 5 through the wire 8, and then respectively transmitted to the first fan 111, the second fan 112, and the electric heat tracing battery 6.

[0044] In areas where it is easy to freeze in winter, the defrosting water of the air - source heat pump gathers in the water collecting tray and freezes, resulting in the inability to drain the defrosting water. The ice layer becomes thicker and thicker, affecting the normal operation of the unit.

[0045] Based on this, the utility model adopts a first fan 111, a second fan 112 driven by solar energy, and an electric tracing battery 6, which on the one hand increases the heat exchange air volume of the unit, and on the other hand avoids the problem that the defrosting water freezes and cannot be discharged in winter, greatly optimizing the operating environmental conditions of the heat pump unit.

[0046] Embodiment 3

[0047] A control method for an air source heat pump sound insulation cover, used to control the air source heat pump sound insulation cover described in Embodiment 1 or 2. When the heat pump is in the refrigeration working condition, it includes the following steps:

[0048] When the heat pump is in the refrigeration working condition, the photovoltaic panel 7 generates electricity and is transmitted to the controller 5 through the wire 8, and then transmitted to the fan 11 (including the first fan 111 and the second fan 112) through the controller 5. The fan 11 operates to increase the air intake volume. The electric tracing battery 6 and the electric tracing 14 do not work.

[0049] At this time, the temperature values collected by the first temperature sensor 91 at the upper air inlet 121 and the second temperature sensor 92 at the lower air inlet 122 are detected, and it is judged whether the difference is within the allowable temperature difference range.

[0050] As Figure 3 shown, if the temperature data collected by the first temperature sensor 91 and the second temperature sensor 92 are within the allowable temperature difference range, that is, the air inlet temperatures of the upper air inlet 121 and the lower air inlet 122 are not much different, then the controller 5 controls the electric rotating door 13 to be perpendicular to the air inlet surface, that is, Figure 3 position B in, open the upper air inlet 121, the lower air inlet 122, the first fan 111, and the second fan 112, thereby increasing the air inlet area;

[0051] As Figure 4 shown, if the temperature data collected by the first temperature sensor 91 and the second temperature sensor 92 are outside the allowable temperature difference range, that is, the air inlet temperatures of the upper air inlet 121 and the lower air inlet 122 are quite different, then the controller 5 controls the electric rotating door 13 to block the upper air inlet 121, that is, Figure 4 position A in, close the upper air inlet 121 and the first fan 111, and open the lower air inlet 122 and the second fan 112. The cold air has a large density, and the air inlet temperature of the lower air inlet 122 is relatively low, which is beneficial to reducing the condensation temperature of the unit and improving the energy efficiency of the unit.

[0052] Embodiment 4

[0053] A control method for an air source heat pump sound insulation cover, used to control the air source heat pump sound insulation cover described in Embodiment 1 or 2. When the heat pump is in the heating working condition, it includes the following steps:

[0054] The power generated by the photovoltaic panel 7 is transmitted to the controller 5 through the wire 8, and then transmitted to the electric tracing battery 6 and the fans 11 (including the first fan 111 and the second fan 112) through the controller 5 respectively. Among them, the power supply of the electric tracing battery 6 is preferentially ensured, and the electric tracing 14 is always in a working state. On the one hand, it can prevent the water collecting tray from freezing and ensure the normal operation of the unit; on the other hand, the heat released by the electric tracing 14 can increase the inlet air temperature of the heat pump unit and improve the energy efficiency of the unit. The excess power is used for the fans 11 to increase the air intake volume.

[0055] At this time, the temperature values collected by the first temperature sensor 91 at the upper air inlet 121 and the second temperature sensor 92 at the lower air inlet 122 are detected, and it is judged whether the difference is within the allowable temperature difference range.

[0056] As Figure 5 shown, if the temperature data collected by the first temperature sensor 91 and the second temperature sensor 92 are within the allowable temperature difference range, that is, the inlet air temperatures of the upper air inlet 121 and the lower air inlet 122 are not much different, then the controller 5 controls the electric rotating door 13 to be arranged perpendicular to the air inlet surface, that is Figure 5 at position B in [], open the upper air inlet 121, the lower air inlet 122, the first fan 111, and the second fan 112 to increase the air intake area;

[0057] If the temperature data collected by the first temperature sensor 91 and the second temperature sensor 92 are outside the allowable temperature difference range, that is, the inlet air temperatures of the upper air inlet 121 and the lower air inlet 122 are quite different, then the controller 5 controls the electric rotating door 13 to block the lower air inlet 122, that is Figure 6 at position C in [], open the upper air inlet 121 and the first fan 111, and close the lower air inlet 122 and the second fan 112. The hot air has a small density, and the inlet air temperature of the upper air inlet 121 is relatively high, which is beneficial to increasing the evaporation temperature of the unit and improving the energy efficiency of the unit.

[0058] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air source heat pump sound insulation cover (2), characterized in that: include An air inlet surface, the air inlet surface being divided into an upper air inlet (121) and a lower air inlet (122) by an electric revolving door (13), the upper air inlet (121) being provided with a first temperature sensor (91) and a first fan (111), and the lower air inlet (122) being provided with a second temperature sensor (92) and a second fan (112); An air outlet surface, an air guide tube (3) being arranged outside the air outlet surface; A controller (5), wherein the controller (5) determines whether the temperature data collected by the first temperature sensor (91) and the second temperature sensor (92) are within an allowable temperature difference range, and automatically controls the position of the electric revolving door (13) and the opening and closing of the first fan (111) and the second fan (112) according to the determination result.

2. The air source heat pump sound insulation cover (2) according to claim 1, characterized in that: The air guide tube (3) is arranged upward at an inclination of 40-60 degrees.

3. The air source heat pump sound insulation cover (2) according to claim 1, characterized in that: The position of the electric revolving door (13) includes being perpendicular to the air inlet surface, shielding the upper air inlet (121), and shielding the lower air inlet (122).

4. The air source heat pump sound insulation cover (2) according to claim 3, characterized in that: The electric revolving door (13) comprises a door panel with a plate-like structure, and the door panel is capable of shielding the upper air inlet (121) and the lower air inlet (122).

5. An air source heat pump sound insulation cover (2) according to any one of claims 1 to 4, characterized in that: The air inlet surface is arranged on three side surfaces of the sound insulation cover (2), and the air outlet surface is located on the top surface of the sound insulation cover (2).

6. The air source heat pump sound insulation cover (2) according to claim 5, characterized in that: The air guide cylinder (3) is inclined away from the air inlet surface.

7. The air source heat pump sound insulation cover (2) according to claim 5, characterized in that: The outer side of the air inlet surface is provided with a sound-absorbing louver (10).

8. The air source heat pump sound insulation cover (2) according to claim 7, characterized in that: A sound-absorbing plate (4) is provided at one end of the air guide tube (3) away from the air outlet surface.

9. The air source heat pump sound insulation cover (2) according to claim 5, characterized in that: The invention also comprises a photovoltaic panel (7), wherein the photovoltaic panel (7) is arranged on the upper part of the sound insulation cover (2), and the photovoltaic panel (7) is capable of supplying power to the controller (5), the first temperature sensor (91), the second temperature sensor (92), the first fan (111), and the second fan (112).

10. An air source heat pump sound insulation cover (2) according to claim 9, characterized in that: It also includes a water collecting tray (15), the water collecting tray (15) is connected to a drainage pipe (16), the water collecting tray (15) and the drainage pipe (16) area are provided with electric heating (14), and the photovoltaic panel (7) can supply power to the electric heating storage battery (6).

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