CN201811380U - Solar-air-ground energy three heat source heat pump air conditioning unit - Google Patents

Abstract

The utility model provides a solar energy-air-geothermal energy three-heat-source heat pump air conditioning unit, which comprises a compressor, an outdoor unit heat exchanger, a user side heat exchanger, a four-way reversing valve, a throttle valve and a connecting pipeline, wherein the outdoor unit heat exchanger is a solar energy-air-geothermal energy three-heat-source heat exchanger and comprises a sunshade board, an outer sleeve, an inner sleeve arranged in the outer sleeve in a penetrating way, fins combined with the outer wall of the outer sleeve, and solar energy irradiation absorptive coatings formed on the outer surfaces of the outer sleeve and the fins, the inner sleeve is communicated with a pipeline of a liquid heat source, and clearances among the fins form air heat source channels. The utility model only uses one solar energy-air-geothermal energy three-heat-source heat exchanger, remarkably improves the heating coefficient of performance (COP) and the operation stability of a heat pump unit, simultaneously further simplifies system components, can utilize three renewable clean energy of solar energy, air and geothermal energy independently, and can also simultaneously utilize any two of the solar energy, the air and the geothermal energy or simultaneously utilize the three renewable energy, so that the application range is wide.

Description

Solar-air-ground energy three heat source heat pump air conditioning unit

technical field

The utility model relates to a solar utilization device, in particular to a heat pump device utilizing solar energy, in particular to a solar-air-ground energy three-heat-source heat pump air-conditioning unit.

Background technique

At present, the total energy consumption of buildings in my country has accounted for 46.7% of the total energy consumption of the society, of which the energy consumption of heating and air conditioning accounts for about 65% of the total energy consumption of buildings. Building air conditioning energy conservation is the top priority of building energy conservation. For this reason, vigorously developing and effectively utilizing renewable energy has become a priority development strategy for all countries.

As a renewable clean energy with huge application prospect and market, solar energy has been paid more and more attention to its development and effective utilization. Solar energy is valued by people because of its inexhaustible, cheap, safe, no need for transportation, clean and pollution-free, etc. However, due to the strong influence of solar energy on seasons and weather, and low heat flux density, various forms of solar energy direct utilization systems are in use. There are certain restrictions in the application; the air source heat pump uses air as the cold and heat source, has a simple structure, is easy to install and use, and can make full use of the energy in the air. , the evaporation temperature of the air source heat pump system is too low, the COP (coefficient of performance) drops sharply, the energy consumption of the system increases, and even cannot start normally, and cannot meet the normal heating requirements; the ground source heat pump is a high-efficiency energy-saving device with environmental protection, energy saving, Economical, reliable and other significant advantages. Ground source heat pumps use groundwater, underground soil, and heat from rivers and lakes as the heat and cold sources of the heat pump air-conditioning system, making full use of geothermal energy, a renewable energy source, to achieve efficient operation of the heat pump air-conditioning system throughout the year, but there is still groundwater in the ground source heat pump. Difficult recharge, large amount of groundwater circulation, high energy consumption of circulating water pumps, too many underground pipes, etc. At present, the utilization of clean energy is mostly a combination of solar energy and air energy. Chinese invention patent "solar-air heat pump water heater" (application date August 28, 2003, authorized announcement date August 28, 2008, authorized announcement number CN 100398936C) discloses a solar-air heat pump water heater, which is collected by solar energy Plate, air-conditioning fan, vent, housing and other components, combining the solar heat collector and air heat exchanger in a compact structure. In this invention, an independent solar heat collector plate is required, which makes the entire heat pump structure complex. There is also a combination of solar and ground energy. The Chinese utility model patent "solar-ground source heat pump air-conditioning and hot water equipment" (application date October 11, 2003, application number 200320101152.8, authorized announcement number CN 2748843Y) discloses a solar energy A ground source heat pump air-conditioning hot water equipment is structurally based on the existing heat pump water heating equipment, adding a solar collector tube evaporator and an underground radiator to utilize solar energy and ground energy. In the technical scheme disclosed in the Chinese invention patent "An air-conditioning device utilizing a variety of natural and environmentally friendly energy sources" (application date January 25, 2007, authorization announcement date March 11, 2009, authorization announcement number CN 100467964C), the solar energy , Air energy and ground energy are comprehensively utilized, but there is a set of heat exchange systems for each of the three energy sources. The structure is complex, there are many pipelines, and the energy is not concentrated, which is not conducive to improving the use effect.

Contents of the invention

The purpose of this utility model is to provide a solar-air-ground energy three-heat source heat pump air-conditioning unit. The solar-air-ground energy three-heat source heat pump air-conditioning unit should solve the problem of comprehensive utilization of solar energy and air in the prior art. The structure of the ground energy device is complex, the energy is not concentrated, and the technical problems affect the use effect.

The purpose of this utility model is achieved through the following technical solutions: including compressor, outdoor unit heat exchanger, user-side heat exchanger, four-way reversing valve, throttle valve and connecting pipeline, the outlet of the compressor passes through four-way The reversing valve is respectively connected to one interface of the working medium channel of the heat exchanger on the user side and one interface of the working medium channel of the outdoor unit heat exchanger. The air conditioner in the user's room is connected to the user side heat exchanger through the air conditioner water supply pipe and the air conditioner return pipe. , the outdoor unit heat exchanger is a solar-air-ground energy three-heat source heat exchanger, and the solar-air-ground energy three-heat source heat exchanger includes a sunshade, an outer sleeve, an inner sleeve worn in the outer sleeve, and The fins combined with the outer wall of the outer casing, and the solar radiation absorbing coating on the outer surface of the outer casing and the fins, the outer diameter of the inner casing is smaller than the inner diameter of the outer casing, the ring between the outer wall of the inner casing and the inner wall of the outer casing The space constitutes the working medium channel of the heat exchanger of the outdoor unit, the inner casing is connected with the pipeline of the liquid heat source from the ground energy storage, and the gap between the fins constitutes the air heat source channel.

The solar-air-ground energy three-heat source heat exchanger is a sheet-mounted structure, the fins are rectangular thin plates, and there is a gap between two adjacent fins, and the fins are stacked to form the solar-air dual heat source heat exchanger The shape of the outer casing is S-shaped and bent between the fins.

The solar-air-ground energy heat exchanger with three heat sources is a winding sheet structure, and its outer casing is bent in an S shape, and the fins are sleeved on the outside of the outer casing.

A fan is arranged on the solar-air-ground energy three-heat source heat exchanger, and the fan is located on one side of the solar-air double heat source heat exchanger.

The solar radiation absorbing coating is provided on the outer surface of the outer casing and the fins by electroplating.

The solar radiation absorbing coating is provided on the outer surface of the outer casing and the fins by spraying or brushing.

A single fin is in the form of a circular sheet.

The sun visor is detachably arranged on the three heat source heat exchangers of solar energy-air-ground energy.

The sun visor is arranged on the three heat source heat exchangers of solar energy-air-ground energy in a detachable and foldable manner.

The sun visor is connected with the driving motor through a driving mechanism. The driving mechanism is composed of a rack and pinion. The sun visor is set on the solar-air-ground energy three-heat source heat exchanger through a hinge and a chute, and the gear shaft is fixed on the drive motor. On the output shaft, the gear meshes with the rack, and one end of the rack is connected with the sun visor through a pin shaft.

Compared with the prior art, the utility model has positive and obvious effects. This solar-air-ground energy three-heat source heat pump air conditioner unit only uses one solar-air-ground energy three-heat source heat exchanger to obtain heat from solar radiation, air and ground energy at the same time. The surface is coated with a solar radiation absorbing coating, which replaces the traditional solar collector. On the one hand, it simplifies the structure of the heat exchanger, and on the other hand, it also simplifies the structure of the pipeline, improves the reliability of the heat pump, and integrates solar heat collection technology, air The source heat pump technology and the ground source heat pump technology have been combined scientifically and rationally, and the gaseous heat source heat exchanger and the liquid heat source heat exchanger have been combined into one, and a solar-air-ground energy three-heat source compound heat exchanger with an integrated structure is designed. Heater, so that the whole system can use solar energy, air heat source and ground energy more flexibly. Use solar energy, air, and ground energy as the heat source of the heat pump, and use solar energy, air, and ground energy alone as the heat source of the heat pump, or choose any two of the above three as the heat source of the heat pump. Similarly, when performing a refrigeration cycle, the solar-air-ground energy three-heat source heat exchanger can simultaneously use air and ground energy as the heat source of the heat pump, and can also use air and ground energy alone as the heat source of the heat pump. Therefore, the system can significantly improve the efficiency of the heat pump. When the sleeve structure is adopted, it is composed of multiple rectangular thin plate fins stacked at a certain interval. At this time, the outer sleeve is arranged in the fins in an S shape, so that the gap between two adjacent fins forms an air flow. aisle. When adopting the fin-wound structure, use smaller fins, multiple fins are sleeved on the outer casing, and then bend with the outer casing to form an S shape, but at this time, it is also required that the upper and lower layers of fins are aligned up and down , which facilitates the formation of upper and lower air flow channels and improves the air flow effect.

Description of drawings

Fig. 1 is a working principle diagram of the present utility model.

Fig. 2 is a front view of the solar-air-ground energy three-heat source heat exchanger in Embodiment 1 of the utility model.

Figure 3 is a left side view of Figure 2.

Fig. 4 is a right side view of Fig. 2 .

Fig. 5 is a front view of the solar-air-ground energy three-heat source heat exchanger in Embodiment 2 of the present utility model.

FIG. 6 is a left side view of FIG. 5 .

Fig. 7 is a right side view of Fig. 6 .

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail through embodiment.

Example 1

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, in Fig. 1, the water supply pipeline, the hot water supply pipeline, and the ground energy storage part are omitted to work the necessary valve assembly. In this embodiment, the Solar-air-ground energy three-heat source heat pump air conditioner unit, including compressor 1, solar-air-ground energy three-heat source heat exchanger 2, user-side heat exchanger 3, four-way reversing valve 4, throttle valve 5 and Connect the pipeline; the outlet of compressor 1 is respectively connected to the user-side heat exchanger 3 and a port of the refrigerant (working medium) channel of the solar-air-ground energy three-heat source heat exchanger 2 through the four-way reversing valve 4, and the user-side The other interface of the heat exchanger 3 and the refrigerant channel of the solar-air-ground energy three-heat source heat exchanger 2 is connected through the throttle valve 5, and the air conditioner in the user's room is connected to the user side through the air-conditioning water supply pipe 14 and the air-conditioning return pipe 15. The heat exchangers are connected, and the solar-air-ground energy three-heat source heat exchanger 2 is a solar-air-ground energy three-heat source composite heat exchanger with a sunshade 13 and a high-efficiency radiant heat-absorbing coating. The ground energy in the present embodiment is utilized as a medium through liquid water, and Fig. 1 does not draw the ground energy storage storehouse and related and pipelines, and the ground energy storehouse can be constructed by using existing civil air defense projects or abandoned mine engineering constructions. It is made of natural underground caverns or artificial underground blasting. The wall of the warehouse is made of reinforced concrete lining. A sealing layer is arranged on the inner side, and the water flows through the energy storage through the water pump and the valve. The water coming out of the energy storage is connected with the inner casing 6 of the heat exchanger through the ground energy water supply pipe 16, and after heat exchange, it becomes ground energy. The water return pipe 17 flows back to the energy storage to exchange again.

Through the control of the valve on the pipeline, the heat pump working fluid of the solar-air-ground energy three-heat source heat pump air-conditioning unit can not only use the energy of solar energy, air, and ground energy at the same time, but also use solar energy, air or ground energy alone, or Any two of the above three are selected.

As shown in Fig. 2, Fig. 3 and Fig. 4, the three-heat source composite heat exchanger 2 described in the utility model is a solar-air-ground energy three-heat source heat exchange with a summer sunshade and a high-efficiency radiant heat absorbing coating device, which includes a detachable sun visor 13, an outer sleeve 6, an inner sleeve 10 fitted in the lumen of the outer sleeve, a fin 7 combined with the outer wall of the outer sleeve 6, and the outer surface of the outer sleeve and the outer surface of the fin. A black solar radiation absorbing coating electroplated on the surface; the outer diameter of the inner casing 10 is smaller than the aperture of the outer casing 6, and the heat pump working fluid channel 8 is formed by the annular space between the outer wall of the inner casing 10 and the inner wall of the outer casing 6 , the lumen of the inner casing 10 forms a liquid heat source channel 11, which communicates with the pipeline from the ground energy water supply; the gaseous heat source channel 9 is formed between the outer wall of the outer casing 6 and the fins 7, with a solar radiation absorbing coating The outer surface of the outer sleeve 6 and the outer surface of the fins 7 constitute the adsorption surface of the solar heat source. When heating in winter, the sun visor 13 is removed, and the heat pump working medium can simultaneously absorb the heat of the gaseous heat source and the liquid heat source and the solar radiation heat absorbed by the solar radiation absorbing coating on the outer surface of the outer casing 6 and the outer surface of the fins 7; When cooling, the sun visor is installed, and the heat pump working medium can release heat to the gaseous heat source and the liquid heat source at the same time.

The solar-air-ground energy three-heat source heat exchanger 2 is a sheet-mounted structure, and the fins 7 are rectangular thin plates. There is a gap between two adjacent fins 7 to form an air heat source channel 9. The fins are stacked to form the The shape of the solar-air-ground energy three-heat source heat exchanger, the outer casing 6 is bent in an S shape and inserted between the fins, and a fan 12 is installed on one side of the heat exchanger 2 to enhance the air flow and make full use of the air heat source . Since the outer surface of the fins and the outer sleeve is coated with a solar radiation-absorbing coating, the solar radiation-absorbing coating has a strong absorption effect on solar radiation, can fully absorb solar energy, does not need to use a solar collector, and simplifies replacement. Heater structure, and pipeline structure.

The compressor 1 in the utility model can be a frequency-selective compressor or a variable-frequency compressor, and existing commonly used working fluids and new environment-friendly working fluids can be used as refrigerants. The heat pump working medium can simultaneously absorb the heat of the gaseous heat source and the heat of solar radiation energy absorbed by the solar radiation absorbing coating on the outer surface of the outer casing and the outer surface of the fins.

Work process of the present utility model is as follows:

(1) Heating mode

In this working mode, the sun visor 13 is closed (or removed), the heat pump working fluid is compressed by the compressor 1, passes through the four-way reversing valve 4, enters the user-side heat exchanger 3 to release heat, and enters the three heat sources through the throttle valve 5 The composite heat exchanger 2 absorbs the heat of the gaseous heat source and the liquid heat source and the solar radiation heat absorbed by the solar radiation absorbing coating on the outer surface of the outer casing 6 and the outer surface of the fin 7 at the same time or separately, and passes through the four-way commutation The valve 4 enters the compressor 1 to enter the next cycle; the air conditioner in the user's room exchanges heat with the heat exchanger on the user side through the air-conditioning water supply pipe 14 and the air-conditioning return pipe 15 to realize indoor heating.

(2) Cooling mode

In this working mode, the sun visor 13 is opened (or installed on the upper part of the sun visor type solar-air dual heat source heat exchanger 2) for sun shading work, and the heat pump working fluid is compressed by the compressor 1 and enters the three heat sources through the four-way reversing valve 4 The compound heat exchanger 2 releases heat to the gaseous heat source and liquid heat source simultaneously or separately, and then enters the heat exchanger 3 on the user side through the throttle valve 5, and the air conditioner in the user room communicates with the user through the air conditioner water supply pipe 14 and the air conditioner return pipe 15 The side heat exchanger performs heat exchange to realize indoor refrigeration. After the working fluid absorbs the heat from the user's room, it enters the compressor 1 through the four-way reversing valve 4 and enters the next cycle.

The solar-air-ground energy three-heat source composite heat pump air conditioner unit of the utility model can be widely used in all places where air source heat pumps can be used, such as civil buildings, public buildings, and villa buildings.

Example 2

As shown in Fig. 1, Fig. 5, Fig. 6 and Fig. 7, the difference between this embodiment and Embodiment 1 is that the solar-air-ground energy three-heat source heat exchanger is a winding sheet structure, and its outer sleeve 6 is S-shaped bending, a plurality of annular fins 7 are sleeved on the outside of the outer tube, the upper and lower adjacent layers of fins are separated structures, and the single fins of the upper and lower adjacent layers of fins are aligned up and down, Constitute the air flow channel.

In addition to the above-mentioned solutions, the multiple structures of the present utility model can also be modified in many ways. For example, the shape of the solar-air-ground energy three-heat source heat exchanger can also adopt other forms, not necessarily a square, which can be obtained by changing the shape of the fins in Embodiment 1 and the arrangement of the fins in Embodiment 2 At the same time, the fins can also be set in a certain shape to facilitate air flow and improve heat exchange efficiency. The solar radiation absorbing coating on the outer surface of the fins and the outer casing can also adopt other colors with better solar radiation absorption properties, such as brown, and can also be applied to the outer surfaces of the fins and the outer casing by spraying or brushing . At the same time, the sun visor is installed on the solar-air-ground energy heat exchanger in a detachable and foldable manner, and the sun visor is connected with the driving motor through a driving mechanism. The hinge and the chute are set on the solar-air-ground energy three-heat source heat exchanger, the gear shaft is fixed on the output shaft of the drive motor, the gear and the rack are meshed, and one end of the rack is connected with the sunshade through the pin shaft. The drive motor controls the expansion and contraction of the shutter.

Claims (10)

1. A solar-air-ground energy three-heat source heat pump air conditioner unit, including a compressor (1), an outdoor unit heat exchanger (2), a user-side heat exchanger (3), and a four-way reversing valve (4) . Throttle valve (5) and connecting pipeline, characterized in that: the outlet of the compressor (1) is connected to an interface of the working medium channel of the user-side heat exchanger (3) and the outdoor An interface of the working medium channel of the machine heat exchanger (2), the air conditioner in the user room is connected to the user side heat exchanger (3) through the air conditioner water supply pipe (14) and the air conditioner return pipe (15), and the outdoor unit The heater (2) is a solar-air-ground energy three-heat source heat exchanger (2), and the solar-air-ground energy three-heat source heat exchanger includes a sunshade (13), an outer casing (6), and a (6) the inner casing (10), the fins (7) combined with the outer wall of the outer casing, and the solar radiation absorbing coating on the outer surface of the outer casing (6) and the fins (7), the inner casing The outer diameter of the tube (10) is smaller than the inner diameter of the outer casing (6), and the annular space between the outer wall of the inner casing (10) and the inner wall of the outer casing (6) constitutes the working medium channel (8) of the heat exchanger of the outdoor unit. The casing (10) is connected with the pipeline of the liquid heat source from the ground energy storage, and the gap between the fins (7) forms the air heat source channel (9). 2. The solar-air-ground energy three-heat source heat pump air-conditioning unit as claimed in claim 1, characterized in that: the solar-air-ground energy three-heat source heat exchanger (2) is a shrouded structure, and the fins (7) It is a rectangular thin plate, and there is a gap between two adjacent fins (7). The fins (7) are stacked to form the shape of the solar-air dual heat source heat exchanger, and the outer sleeve (6) is bent in an S shape. Passed between the fins (7). 3. The solar-air-ground energy three-heat source heat pump air-conditioning unit as claimed in claim 1, characterized in that: the solar-air-ground energy three-heat source heat exchanger (2) is a winding structure, and its jacket The tube (6) is bent in an S shape, and the fins (7) are sheathed on the outer side of the outer tube (6). 4. The solar-air-ground energy three-heat source heat pump air-conditioning unit according to claim 1, 2 or 3, characterized in that: a fan ( 12), the fan (12) is located on one side of the solar-air dual heat source heat exchanger (2). 5. The solar-air-ground energy three heat source heat pump air-conditioning unit according to claim 1, 2 or 3, characterized in that: the solar radiation absorbing coating is provided on the outer casing (6) and fins ( 7) Outer surface. 6. The solar-air-ground energy three heat source heat pump air-conditioning unit according to claim 1, 2 or 3, characterized in that: the solar radiation absorbing coating is provided on the outer casing (6) and the fin (7) outer surface. 7. The solar-air-ground energy three-heat source heat pump air-conditioning unit according to claim 3, characterized in that: a single fin (7) is in the form of a circular thin slice. 8. The solar-air-ground energy three heat source heat pump air-conditioning unit as claimed in claim 1, 2 or 3, characterized in that: the sun visor (13) is detachably arranged on the solar-air-ground energy three-heat source heat pump air-conditioning unit. heat source heat exchanger. 9. The solar-air-ground energy three-heat source heat pump air-conditioning unit according to claim 1, 2 or 3, characterized in that: the sun visor (13) is arranged in a detachable and foldable manner on the solar-air-ground energy Three heat sources on the heat exchanger. 10. The solar-air-ground energy three heat source heat pump air conditioner unit as claimed in claim 8, characterized in that: the sun visor (13) is connected to the drive motor through a drive mechanism, the drive mechanism is composed of a rack and pinion, The sun visor is set on the solar-air-ground energy three heat source heat exchanger through the hinge and the chute, the gear shaft is fixed on the output shaft of the driving motor, the gear and the rack are meshed, and one end of the rack is connected with the sun visor through the pin shaft. connect.

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