阅读说明：本技术 一种真空集热蓄热型空气源热泵 (Vacuum heat collection and storage type air source heat pump ) 是由 江红阳 张凤娟 苏州 于 2019-08-09 设计创作，主要内容包括：本发明公开了一种真空集热蓄热型空气源热泵,真空集热蓄热装置为至少一个,包括真空保温管和螺旋集热器,所述真空保温管的壳体为透明的双层保温结构,所述螺旋集热器设置于真空保温管的内部,两者同轴设置；螺旋集热器包括储热筒和设置于储热筒外壁的螺旋片,储热筒内填充有蓄热剂,蓄热剂与螺旋片之间通过导热丝连接,螺旋片上涂覆吸热涂层；真空保温管的一端开口为空气进口,另一端开口为空气出口；空气出口侧设置空气源热泵的蒸发器；风机设置于蒸发器的下游,为空气流动提供动力。(The invention discloses a vacuum heat collection and storage type air source heat pump, wherein at least one vacuum heat collection and storage device is provided and comprises a vacuum heat insulation pipe and a spiral heat collector, the shell of the vacuum heat insulation pipe is of a transparent double-layer heat insulation structure, and the spiral heat collector is arranged in the vacuum heat insulation pipe and is coaxially arranged; the spiral heat collector comprises a heat storage cylinder and a spiral sheet arranged on the outer wall of the heat storage cylinder, wherein a heat storage agent is filled in the heat storage cylinder, the heat storage agent is connected with the spiral sheet through a heat conduction wire, and a heat absorption coating is coated on the spiral sheet; an opening at one end of the vacuum heat-insulating pipe is an air inlet, and an opening at the other end of the vacuum heat-insulating pipe is an air outlet; the air outlet side is provided with an evaporator of an air source heat pump; the fan is arranged at the downstream of the evaporator and provides power for the air flow.)

1. A vacuum heat collection and storage type air source heat pump is characterized in that: the method comprises the following steps: the system comprises a vacuum heat collection and storage device, an air source heat pump and a fan, wherein the air source heat pump is positioned at the downstream of a vacuum heat collection and storage system;

the vacuum heat collection and storage device comprises at least one vacuum heat insulation pipe and a spiral heat collector, wherein a shell of the vacuum heat insulation pipe is of a transparent double-layer heat insulation structure, the spiral heat collector is arranged in the vacuum heat insulation pipe, and the spiral heat collector and the vacuum heat insulation pipe are coaxially arranged;

the spiral heat collector comprises a heat storage cylinder and a spiral sheet arranged on the outer wall of the heat storage cylinder, wherein a heat storage agent is filled in the heat storage cylinder, the heat storage agent is connected with the spiral sheet through a heat conduction wire, and a heat absorption coating is coated on the spiral sheet;

an opening at one end of the vacuum heat-insulating pipe is an air inlet, and an opening at the other end of the vacuum heat-insulating pipe is an air outlet;

the air outlet side is provided with an evaporator of an air source heat pump;

the fan is arranged at the downstream of the evaporator and provides power for the air flow.

2. The vacuum heat collecting and storing type air source heat pump as claimed in claim 1, wherein: the number of the vacuum heat collecting and storing devices is 2-30, and the plurality of vacuum heat collecting and storing devices are arranged side by side.

3. The vacuum heat collecting and storing type air source heat pump as claimed in claim 2, wherein: the plurality of vacuum heat collecting and storing devices are arranged in the same transparent shell side by side to form a plurality of air circulation channels;

furthermore, one end of the transparent shell is provided with a first shutter, and the other end of the transparent shell is provided with a second shutter.

4. The vacuum heat collecting and storing type air source heat pump according to claim 3, characterized in that: the third louver, the transparent shell and the peripheral side wall enclose a cuboid flow stabilizing chamber, wherein the third louver is perpendicular to the transparent shell, and a certain gap is reserved between the outlet end of the transparent shell and the third louver;

the transparent shell is horizontally arranged and is positioned at the top of the flow stabilizing chamber;

the evaporator is arranged in the flow stabilizing cavity, is positioned below the transparent shell and covers the vertical cross section of the rectifying cavity;

the fan and the third shutter are respectively positioned at two ends of the evaporator.

5. The vacuum heat collecting and storing type air source heat pump according to claim 4, characterized in that: the cavity between the evaporator and the fan forms a static pressure box, and the side wall around the static pressure box is made of transparent materials.

6. The vacuum heat collecting and storing type air source heat pump according to claim 4, characterized in that: and a flow deflector is arranged at the outlet end of the transparent shell.

7. The vacuum heat collecting and storing type air source heat pump as claimed in claim 1, wherein: the heat conduction wires are metal wires.

8. The vacuum heat collecting and storing type air source heat pump according to claim 4, characterized in that: and the first louver, the second louver and the third louver are all provided with heat-insulating layers.

9. The vacuum heat collecting and storing type air source heat pump of claim 8, wherein: the heat preservation layer is made of rock wool.

10. The vacuum heat collecting and storing type air source heat pump as claimed in claim 1, wherein: still include condenser, compressor, reservoir and choke valve, the exit linkage of the import and the evaporimeter of compressor, the export and the condenser access connection of compressor, condenser export and reservoir access connection, the reservoir export is connected with the choke valve, and the evaporimeter is connected to the choke valve.

Technical Field

The invention belongs to the technical field of air source heat pumps, and particularly relates to a vacuum heat collection and storage type air source heat pump.

Background

The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.

The air source heat pump technology is an energy-saving and environment-friendly heating technology established based on the reverse Carnot cycle principle, a refrigerant is used as a medium, a compressor converts low-temperature and low-pressure gaseous refrigerants into high-pressure and high-temperature gaseous refrigerants, the high-temperature and high-pressure gaseous refrigerants exchange heat with water or air in a condenser, and the high-pressure refrigerants are cooled and condensed into liquid states at normal temperature. In the process, the refrigerant releases heat to heat water or air to obtain hot water or hot air. The high-pressure liquid refrigerant is decompressed through the expansion valve, the pressure is reduced, the refrigerant returns to the temperature lower than the outside, the refrigerant has the capacity of absorbing heat and evaporating, and the low-temperature and low-pressure liquid refrigerant is evaporated by absorbing the heat in the air through the evaporator and is changed into a gas state from a liquid state. The refrigerant absorbing heat is changed into low-temperature and low-pressure gas, and then the gas is sucked by the compressor for compression, and the gas is circulated in a reciprocating way to continuously absorb heat from the air, and the heat is released by the heat exchanger on the water side (air side) to prepare hot water or hot air.

According to the principle, the air source heat pump is a cold and heat source device taking outdoor air as an energy carrying medium on the heat source side, so that when the outdoor environment temperature is low, the problems of low heating capacity, low energy efficiency ratio, overhigh compressor exhaust temperature and incapability of starting sometimes even occur due to low evaporation temperature and high compression ratio, and the outdoor heat exchanger is easy to frost to aggravate performance reduction.

In the existing patent, the solar and air source composite heating system is mainly classified into three types, namely a direct expansion type solar air source heat pump system, a series connection form of jointly producing hot water or hot air through the solar and air source heat pumps, carrying out primary heating through solar energy, carrying out secondary heating through the heat pumps, or a mixed parallel connection form of producing hot water or hot air through the solar energy, and improving the evaporation temperature through heat generated by solar energy. The inventor finds that the above three conditions have technical problems that the heat of the solar energy cannot be continuously supplied, the solar energy supply rate is low, the design purpose is difficult to realize, and the like.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention aims to provide a vacuum heat collection and storage type air source heat pump. The invention aims to provide an efficient vacuum heat collection and heat storage air source heat pump heating system, which greatly improves the solar heat collection efficiency under unit area, effectively improves the environmental temperature, realizes efficient energy storage, innovatively designs the overall structure of a unit, organically combines the solar heat collection efficiency and the environmental temperature, realizes continuous and efficient unit operation by freely switching an automatic heat insulation shutter.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a vacuum heat collection and storage type air source heat pump comprises: the system comprises a vacuum heat collection and storage device, an air source heat pump and a fan, wherein the air source heat pump is positioned at the downstream of a vacuum heat collection and storage system;

the vacuum heat collection and storage device comprises at least one vacuum heat insulation pipe and a spiral heat collector, wherein a shell of the vacuum heat insulation pipe is of a transparent double-layer heat insulation structure, the spiral heat collector is arranged in the vacuum heat insulation pipe, and the spiral heat collector and the vacuum heat insulation pipe are coaxially arranged;

the spiral heat collector comprises a heat storage cylinder and a spiral sheet arranged on the outer wall of the heat storage cylinder, wherein a heat storage agent is filled in the heat storage cylinder, the heat storage agent is connected with the spiral sheet through a heat conduction wire, and a heat absorption coating is coated on the spiral sheet;

an opening at one end of the vacuum heat-insulating pipe is an air inlet, and an opening at the other end of the vacuum heat-insulating pipe is an air outlet;

the air outlet side is provided with an evaporator of an air source heat pump;

the fan is arranged at the downstream of the evaporator and provides power for the air flow.

The shell of the vacuum heat-insulating pipe adopts a transparent double-layer heat-insulating structure, so that the absorption efficiency of solar energy can be improved, and better heat-insulating performance can be achieved, so that the energy loss is reduced.

The spiral sheet is arranged on the outer wall of the heat storage cylinder, so that the light receiving area can be obviously increased, and the absorption capacity of solar energy is further improved. And a heat absorption coating is coated on the spiral piece to improve the absorption efficiency of the solar energy. The energy absorbed by the spiral sheet is transmitted to the heat storage agent in the heat storage cylinder through the heat conducting wires so as to realize the storage of heat.

When the sunlight is sufficient, the spiral piece on the spiral heat collector is coated with the heat absorption coating, so that the heat absorption effect is better, the absorbed heat is transferred to the heat storage agent (paraffin oil and the like) in the heat storage cylinder through the heat conducting wires, the heat storage is realized, and the heat storage agent has higher temperature. At this time, if air enters the vacuum heat-insulating pipe from the air inlet end of the vacuum heat-insulating pipe, the temperature is further increased under the heating action of sunlight, the spiral sheet and the heat storage agent, and when air with higher temperature flows to the evaporator, larger driving force can be provided for the air source heat pump. The air cooled by the evaporator is discharged to the external environment under the power action of the fan.

If the temperature of the air in the external environment is higher, the air can be directly conveyed to the evaporator without passing through the vacuum heat collecting and storing device, and at the moment, the vacuum heat collecting and storing device only plays a role in storing energy. When the sunlight is insufficient or the temperature of the external environment is remarkably reduced, the external air is conveyed to the evaporator through the vacuum heat collection and storage device, at the moment, the heat stored in the heat storage agent is conveyed to the spiral piece through the heat conducting wires, and the air is in contact with the spiral piece to exchange heat in the flowing process, so that the air is heated. Meanwhile, the spiral piece can play a role in turbulence so as to improve the uniform degree of heating the air. By the mode, the problems that when the outdoor environment temperature is low, the evaporation temperature is low, the compression ratio is large, the heating capacity is small, the energy efficiency ratio is low, the exhaust temperature of the compressor is too high, and sometimes even the starting cannot be performed are solved, so that the realization of the circulation function of the air source heat pump is ensured.

In addition, because the outside cold air has higher temperature after the heating, so can effectively alleviate the evaporimeter and appear frosting scheduling problem to guarantee the heat transfer performance of evaporimeter.

In some embodiments, the number of the evacuated heat collecting and storing device is 2-30, and a plurality of evacuated heat collecting and storing devices are arranged side by side.

Through setting up a plurality of vacuum thermal-arrest heat accumulation devices, can effectively improve absorption efficiency and absorbed dose to solar energy to guarantee the heating effect to the air.

Furthermore, a plurality of vacuum heat collecting and storing devices are arranged in the same transparent shell side by side to form a plurality of air circulation channels. The heat-insulating plate is convenient to process and install, can play a certain heat-insulating role, and reduces energy loss.

Furthermore, one end of the transparent shell is provided with a first shutter, and the other end of the transparent shell is provided with a second shutter.

The first louver and the second louver can realize the opening and closing of the air channel, and can play a certain heat preservation role when being closed so as to reduce the energy loss.

The third louver, the transparent shell and the peripheral side wall enclose a cuboid flow stabilizing chamber, wherein the third louver is perpendicular to the transparent shell, and a certain gap is reserved between the outlet end of the transparent shell and the third louver;

the transparent shell is horizontally arranged and is positioned at the top of the flow stabilizing chamber;

the evaporator is arranged in the flow stabilizing cavity, is positioned below the transparent shell and covers the vertical cross section of the rectifying cavity;

the fan and the third shutter are respectively positioned at two ends of the evaporator.

Because the air flows from the vacuum heat collecting and storing devices form a plurality of air flows which are concentrated, when the air flows impact the evaporator, the contact between the evaporator and each part of the air flow is uneven, which is not beneficial to improving the heat exchange efficiency of the evaporator.

Therefore, the steady flow chamber enclosed among the third shutter, the evaporator and the transparent shell can buffer and stabilize multiple air flows, so that the air flows entering each position of the cross section of the evaporator are consistent, and the heat exchange efficiency of the evaporator is improved.

When the fan is started and the third shutter is started, air with higher temperature can be directly guided to the evaporator.

Furthermore, a cavity between the evaporator and the fan forms a static pressure box, and the peripheral side wall of the static pressure box is made of transparent materials. When the sunlight is sufficient, the shutter is closed, the whole vacuum compartment body is equivalent to a heat accumulator, and when the temperature is stored to the specified temperature, the shutter is opened to supply heat to the outside.

Furthermore, a flow deflector is arranged at the outlet end of the transparent shell. The heated fluid is directed into a rectification chamber.

In some embodiments, the thermally conductive filaments are metal filaments.

Furthermore, the first louver, the second louver and the third louver are all provided with heat insulation layers. When it is closed, the thermal insulation performance can be realized.

Furthermore, the heat-insulating layer is made of rock wool.

In some embodiments, the vacuum heat collection and storage type air source heat pump further comprises a condenser, a compressor, a liquid storage device, a gas-liquid separator and a throttle valve, wherein an inlet of the compressor is connected with an outlet of the evaporator, an outlet of the compressor is connected with an inlet of the condenser, an outlet of the condenser is connected with an inlet of the liquid storage device, and an outlet of the liquid storage device is connected with an inlet of the evaporator through the throttle valve.

The refrigerant after absorbing heat is changed into gas state, the gas state refrigerant is compressed by the compressor and then changed into high-temperature high-pressure gas, the gas enters the condenser to release heat, the released heat is transferred to water or air, and hot water or hot air is obtained for heating. Then the heat-released refrigerant is subjected to gas-liquid separation, the liquid refrigerant enters an evaporator, the refrigerant absorbing heat in the environment is changed into low-temperature low-pressure gas, the low-temperature low-pressure gas is sucked by a compressor for compression, the reciprocating circulation is carried out, heat is continuously absorbed from the air, and hot water or hot air is prepared by a water side (air side) heat exchanger.

The invention has the beneficial effects that:

the invention provides a device for realizing the environmental temperature control, which can continuously and effectively improve the environmental temperature of inlet air when an air source heat pump operates at the environmental temperature in winter, and avoid the problems of performance attenuation and incapability of starting caused by low environmental temperature;

the device can realize real-time hot air defrosting, has high defrosting speed and saves energy;

the device adopts an automatic control system for electrically opening and closing the shutter, thereby limitedly avoiding the intrusion of objects such as sundries, snow, hailstones and the like from influencing the operation of the device;

the device adopts air energy and solar energy to clean renewable energy, and is energy-saving and environment-friendly.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the invention and not to limit the invention.

FIG. 1 is a schematic structural diagram of a vacuum heat collection and storage type air source heat pump according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a vacuum heat collection and storage device according to an embodiment of the present invention;

FIG. 3 is a schematic side view of a vacuum heat collection and storage device according to an embodiment of the present invention;

FIG. 4 is a schematic top view of a vacuum heat collection and storage device according to an embodiment of the present invention;

fig. 5 is a schematic structural view of an automatic opening and closing control of a blind according to an embodiment of the present invention.

101, a first louver, 102, a second louver, 103, a third louver, 201, a heat storage cylinder, 202, a heat collector air inlet channel, 203, a heat absorption coating, 204, a spiral sheet, 205, a metal wire, 206, a vacuum heat preservation pipe, 301, a flow deflector, 302, an evaporator, 303, a fan, 304, a static pressure box, 305, a compressor, 306, a liquid storage device, 307, a throttle valve, 308, a condenser, 401, a louver, 402, a motor, 403, a controller, 404 and a rotating shaft.

Detailed Description

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

As shown in fig. 1, a vacuum heat collecting and storing type air source heat pump includes: the system comprises a vacuum heat collection and storage device, an air source heat pump and a fan 303, wherein the air source heat pump is positioned at the downstream of a vacuum heat collection and storage system;

as shown in fig. 2, fig. 3 and fig. 4, the number of the vacuum heat collecting and storing devices is at least one, and may be 2 to 30, and may be 5, 6, 8, 10, 12, 15, 18, 20, 25, 27, and the like, each of the vacuum heat collecting and storing devices includes a vacuum heat preservation pipe 206 and a spiral heat collector, a shell of the vacuum heat preservation pipe 206 is a transparent double-layer heat preservation structure, and the spiral heat collector is disposed inside the vacuum heat preservation pipe 206, and the two are disposed coaxially;

the spiral heat collector comprises a heat storage cylinder 201 and a spiral sheet 204 arranged on the outer wall of the heat storage cylinder, wherein a heat storage agent (such as paraffin oil and the like) is filled in the heat storage cylinder 201, the heat storage agent is connected with the spiral sheet 204 through a heat conduction wire, the heat conduction wire can be a metal wire 205 and the like, and a heat absorption coating 203 is coated on the spiral sheet 204; an air inlet channel 202 of the heat collector is formed between the spiral heat collector and the vacuum heat-insulating pipe 206.

One end of the vacuum insulation pipe 206 is opened as an air inlet, and the other end is opened as an air outlet;

the plurality of vacuum heat collecting and storing devices are arranged in the same transparent shell side by side to form a plurality of air circulation channels. The heat-insulating plate is convenient to process and install, can play a certain heat-insulating role, and reduces energy loss. The transparent shell is provided with a first louver 101 at one end and a second louver 102 at the other end. The first louver 101 and the second louver 102 can open and close the air passage, and can also play a certain role in heat preservation when the air passage is closed, so as to reduce energy loss.

An evaporator 302 of an air source heat pump is arranged at the air outlet side of the vacuum heat collecting and accumulating device;

a fan 303 is disposed downstream of the evaporator 302 to provide motive force for air flow.

In addition, the device also comprises a third louver 103, the transparent shell and the peripheral side wall enclose a cuboid flow stabilization chamber, wherein the third louver 103 is vertically arranged with the transparent shell, and a certain gap is left between the outlet end of the transparent shell and the third louver;

the transparent shell is horizontally arranged and is positioned at the top of the flow stabilizing chamber;

the evaporator 302 is installed inside the flow stabilization chamber, is positioned below the transparent shell and covers the vertical cross section of the rectification chamber;

the blower 303 and the third louver 103 are respectively located at both ends of the evaporator 302.

The chamber between the evaporator 302 and the fan 303 forms a plenum box 304, and the walls of the plenum box 304 are transparent. When the sunlight is sufficient, the shutter is closed, the whole vacuum compartment body is equivalent to a heat accumulator, and when the temperature is stored to the specified temperature, the shutter is opened to supply heat to the outside.

And a flow deflector is arranged at the outlet end of the transparent shell and used for guiding the heated flow into the rectification chamber.

The first louver 101, the second louver 102 and the third louver 103 are all provided with insulating layers. When it is closed, the thermal insulation performance can be realized. The heat preservation layer is made of rock wool.

As shown in fig. 5, the louver of the present invention includes a first louver, a second louver, and a third louver, and realizes automatic opening and closing, the louver includes a frame and a plurality of louvers 401, each louver 401 is connected to the frame through a rotating shaft 404, one end of the rotating shaft passes through the frame and is connected to a synchronizing wheel, the synchronizing wheel is connected to a motor 402 through a synchronizing belt, and the motor is connected to a controller 403, so as to realize automatic opening and closing of the louver.

The vacuum heat collection and storage type air source heat pump further comprises a condenser 308, a compressor 305, a liquid storage device 306 and a throttle valve 307, wherein an inlet of the compressor 305 is connected with an outlet of the evaporator 302, an outlet of the compressor 305 is connected with an inlet of the condenser 308, an outlet of the condenser 308 is connected with an inlet of the liquid storage device 306, an outlet of the liquid storage device 306 is connected with the throttle valve 307 and an inlet of the evaporator 302, the heat pump system further comprises valve devices for ensuring the system to operate conventionally, and the valve devices are not listed one by one because the valve devices do not belong to the innovation content of.

When the sunlight is sufficient, the spiral piece on the spiral heat collector is coated with the heat absorption coating, so that the heat absorption effect is better, the absorbed heat is transferred to the heat storage agent (paraffin oil and the like) in the heat storage cylinder through the heat conducting wires, the heat storage is realized, and the heat storage agent has higher temperature. At this time, if air enters the vacuum heat-insulating pipe from the air inlet end of the vacuum heat-insulating pipe, the temperature is further increased under the heating action of sunlight, the spiral sheet and the heat storage agent, and when air with higher temperature flows to the evaporator, larger driving force can be provided for the air source heat pump. The air cooled by the evaporator is discharged to the external environment under the power action of the fan.

If the temperature of the air in the external environment is higher, the air can be directly conveyed to the evaporator without passing through the vacuum heat collecting and storing device, and at the moment, the vacuum heat collecting and storing device only plays a role in storing energy. When the sunlight is insufficient or the temperature of the external environment is remarkably reduced, the external air is conveyed to the evaporator through the vacuum heat collection and storage device, at the moment, the heat stored in the heat storage agent is conveyed to the spiral piece through the heat conducting wires, and the air is in contact with the spiral piece to exchange heat in the flowing process, so that the air is heated. Meanwhile, the spiral piece can play a role in turbulence so as to improve the uniform degree of heating the air. By the mode, the problems that when the outdoor environment temperature is low, the evaporation temperature is low, the compression ratio is large, the heating capacity is small, the energy efficiency ratio is low, the exhaust temperature of the compressor is too high, and sometimes even the starting cannot be performed are solved, so that the realization of the circulation function of the air source heat pump is ensured.

After being compressed by the compressor 305, the gaseous refrigerant is changed into high-temperature high-pressure gas, enters the condenser 308 to release heat, the released heat is transferred to water or air to obtain hot water or hot air for heating, the cooled refrigerant enters the liquid storage device 306, is throttled and reduced in pressure by the throttle valve 307 and then enters the evaporator again, the refrigerant absorbs the heat in the environment in the evaporator to be changed into low-temperature low-pressure gas, then is sucked by the compressor to be compressed, and the reciprocating circulation is carried out, so that the heat is continuously absorbed from the air, and the hot water or hot air is prepared by the water side (air side) heat exchanger.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.