CN210718193U - Solar photovoltaic jet refrigeration and heating system with four-way valve - Google Patents
Solar photovoltaic jet refrigeration and heating system with four-way valve Download PDFInfo
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- CN210718193U CN210718193U CN201921214306.1U CN201921214306U CN210718193U CN 210718193 U CN210718193 U CN 210718193U CN 201921214306 U CN201921214306 U CN 201921214306U CN 210718193 U CN210718193 U CN 210718193U
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Abstract
A solar photovoltaic injection refrigeration and heating system with a four-way valve relates to the technical field of solar photovoltaic, and structurally comprises a refrigeration system, wherein the refrigeration system comprises a working medium pump, an ejector, a condenser, an evaporator, a throttle valve, a solar thermal collector and a generator; the heating system is provided with a four-way valve which is communicated between the generator and the main path of the ejector, and the other two paths of the four-way valve are respectively communicated with the branch path of the ejector and the evaporator. The utility model discloses an increase the cross valve in the system, can realize heating, the switching of heating mode, close refrigerating system and heating system as an organic whole, and with solar collector, generator and photovoltaic board and integration simultaneously, increase solar energy utilization ratio, it is more energy-conserving.
Description
Technical Field
The utility model relates to a solar photovoltaic technology field especially relates to a take solar photovoltaic of cross valve to spray refrigeration and heating system.
Background
The power consumption of the air-conditioning system occupies a large proportion in the national electricity consumption, how to reduce the power consumption of the air-conditioning system and improve the energy efficiency of the air-conditioning system is always the direction of the effort in the industry, the high power consumption of the air-conditioning system is mainly caused by the large power of a compressor of the air-conditioning system, and the solar jet refrigeration system has high energy efficiency ratio, is environment-friendly and sanitary because of no compressor, and is widely concerned.
Patent No. CN103398498A discloses a solar injection refrigeration and heat pump integrated system and a control method, the system integrates a solar injection refrigeration system based on conventional vapor compression to improve the energy utilization efficiency, but the system is very complex, the cost is high, and the control difficulty is high.
Patent No. CN105423613A discloses a mechanically supercharged solar jet refrigeration system and method, in which an expander and a compressor are added to improve the energy efficiency of the system, the system is complex, the cost of the expander and the compressor is high, and heating operation cannot be realized.
In addition, above patent has all only utilized the light heat energy of sunlight, does not utilize the photovoltaic energy of sunlight to some patent solar collector and refrigerating system generator separately arrange, utilize the working medium pump to drive the light heat energy that working medium conducts the sunlight, have middle heat transfer, and the system is bulky, and the cost is higher, and the water pump that sets up in addition need consume the electric energy.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to avoid the weak point among the prior art and provide a take solar photovoltaic of cross valve to spray refrigeration and heating system, this take solar photovoltaic of cross valve to spray refrigeration and heating system has the function of refrigeration and heating.
The purpose of the utility model is realized through the following technical scheme:
the solar photovoltaic jet refrigeration and heating system with the four-way valve comprises a refrigeration system, wherein the refrigeration system comprises a working medium pump, an ejector, a condenser, an evaporator, a throttle valve, a solar heat collector and a generator; the generator is communicated with a main path of the ejector, the ejector is communicated with the condenser, the condenser is communicated with the working medium pump, the working medium pump is communicated with the generator, a branch of the ejector is communicated with the evaporator, the evaporator is communicated with the throttle valve, the throttle valve is communicated with the working medium pump, the solar water heater further comprises a heating system, the heating system is communicated with a four-way valve through the arrangement between the generator and the main path of the ejector, and the other two paths of the four-way valve are respectively communicated with the branch of the ejector and the evaporator. The four-way valve is added in the system, so that the switching of the injection refrigeration cycle and the refrigerant working medium cycle refrigeration and heating modes can be realized. The problem that the traditional injection refrigerator type can only refrigerate but can not heat is solved without a compressor.
Furthermore, the two ends of the throttle valve are communicated with a first one-way valve in parallel.
Furthermore, a second one-way valve is communicated between the condenser and the working medium pump.
Further, the solar collector is integrated with the generator to form an integrated heat collecting generator. The solar heat collector and the generator are integrated together, so that an intermediate heat exchange process is omitted, and the heat exchange efficiency is improved.
Further, the surface of the heat collection generator is provided with a photovoltaic plate and integrated into an integrally formed photovoltaic heat collection generator. The photovoltaic power generation function is added, power can be provided for power elements such as the working medium pump, solar energy is comprehensively utilized, and energy is saved. Photovoltaic board, solar collector and generator, integrated design, compact structure, and can prevent that the too high conversion efficiency of influence of photovoltaic board temperature rise.
Furthermore, the photovoltaic heat collection generator comprises a generator cavity, a heat pipe layer and a photovoltaic plate, wherein the heat pipe layer is located on the left side of the generator cavity, the photovoltaic plate is located on the left side of the heat pipe layer, the heat pipe layer is communicated with an inlet pipe, and the generator cavity is communicated with an outlet pipe.
Furthermore, the outlet pipe is communicated with a four-way valve, and the inlet pipe is communicated with a working medium pump.
Further, the photovoltaic panel is replaced by a photovoltaic thin film cell.
Further, the structural form of the evaporator and the condenser is one or more of a finned tube heat exchanger, a micro-channel heat exchange and a micro-scale heat exchanger.
Furthermore, the heat exchange form of the evaporator and the condenser can be forced convection heat exchange of wind and a refrigerant, and can also be natural convection heat exchange.
The utility model has the advantages that: the utility model discloses a solar photovoltaic injection refrigeration and heating system with a four-way valve, which comprises a refrigeration system, wherein the refrigeration system comprises a working medium pump, an injector, a condenser, an evaporator, a throttle valve, a solar thermal collector and a generator; the main road intercommunication of generator and sprayer, sprayer and condenser intercommunication, condenser and working medium pump intercommunication, working medium pump and generator intercommunication, the branch road and the evaporimeter intercommunication of sprayer, evaporimeter and choke valve intercommunication, choke valve and working medium pump intercommunication still include heating system, heating system has the cross valve through set up the intercommunication between the main road of generator and sprayer, and makes two other ways of cross valve communicate branch road, the evaporimeter of sprayer respectively, the utility model discloses an increase the cross valve in the system, can realize spraying refrigeration cycle and the switching of refrigerant working medium circulation heating mode, close refrigerating system and heating system as an organic whole.
Drawings
The invention is further described with the aid of the accompanying drawings, in which, however, the embodiments do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived from the following drawings without inventive effort.
Fig. 1 is the overall structure schematic diagram of a solar photovoltaic jet refrigeration and heating system with a four-way valve of the present invention.
Fig. 2 is the overall structure schematic diagram of the photovoltaic heat collecting generator of the solar photovoltaic jet refrigeration and heating system with the four-way valve of the utility model.
Fig. 3 is the overall structure schematic diagram of the solar photovoltaic jet cooling and heating system with four-way valve in the radiation cooling mode.
Fig. 4 is an overall structure schematic diagram of the solar photovoltaic injection refrigeration and heating system with a four-way valve of the present invention in the refrigerant working medium circulation refrigeration mode.
Fig. 5 is an overall structure schematic diagram of the solar photovoltaic injection refrigeration and heating system with a four-way valve of the present invention in the refrigerant working medium circulation heating mode.
The figure includes:
working medium pump 1, ejector 2, condenser 3, evaporator 4, throttle valve 5, four-way valve 6, photovoltaic heat collection generator 7, generator cavity 71, heat pipe layer 72, photovoltaic plate 73, inlet pipe 74, outlet pipe 75, first check valve 8, second check valve 9.
Detailed Description
The invention will be further described with reference to the following examples.
The solar photovoltaic jet refrigeration and heating system with the four-way valve comprises a refrigeration system, as shown in fig. 1, wherein the refrigeration system comprises a working medium pump 1, an ejector 2, a condenser 3, an evaporator 4, a throttle valve 5, a solar heat collector and a generator; the solar thermal collector is arranged on the left side of the generator, the photovoltaic panel is arranged on the left side of the solar thermal collector, and the photovoltaic panel, the solar thermal collector and the generator are integrated into a photovoltaic heat collecting generator 7. The solar energy heat collecting device comprises a photovoltaic heat collecting generator 7, an ejector 2, a condenser 3, a working medium pump 1, a photovoltaic heat collecting generator 7, an ejector 2, a throttling valve 5, a four-way valve 6 and a heating system, wherein the photovoltaic heat collecting generator 7 is communicated with a main path of the ejector 2, the ejector 2 is communicated with the condenser 3, the condenser 3 is communicated with the working medium pump 1, the working medium pump 1 is communicated with the photovoltaic heat collecting generator 7, a branch of the ejector 2 is communicated with the evaporator 4, the evaporator 4 is communicated with the throttling valve 5, the throttling valve 5 is communicated with the working medium pump 1, and the heating system is communicated with the four-way valve 6 through the. The four-way valve 6 is added in the system, so that the switching of the injection refrigeration cycle and the refrigerant working medium cycle refrigeration and heating modes can be realized. The problem that the traditional injection refrigerator type can only refrigerate but can not heat is solved without a compressor.
And two ends of the throttle valve 5 are communicated with a first one-way valve 8 in parallel. And a second one-way valve 9 is communicated between the condenser 3 and the working medium pump 1.
As shown in fig. 2, the photovoltaic heat collection generator 7 includes a generator cavity 71, a heat pipe layer 72 located on the left side of the generator cavity 71, and a photovoltaic panel 73 located on the left side of the heat pipe layer 72, the heat pipe layer 72 is communicated with an inlet pipe 74, and the generator cavity 71 is communicated with an outlet pipe 75. The outlet pipe 75 is communicated with the four-way valve 6, and the inlet pipe 74 is communicated with the working medium pump 1. The solar heat collector and the generator are integrated together, so that an intermediate heat exchange process is omitted, and the heat exchange efficiency is improved. The photovoltaic power generation function is added, power can be provided for power elements such as the working medium pump, solar energy is comprehensively utilized, and energy is saved. Photovoltaic board, solar collector and generator, integrated design, compact structure, and can prevent that the too high conversion efficiency of influence of photovoltaic board temperature rise.
According to the difference between the intensity of solar radiation and the cooling and heating requirements of users, the system mainly has three operation modes. A radiation cooling mode; a refrigerant working medium circulation refrigeration mode; a refrigerant working medium circulation heating mode; the three modes of implementation are as follows:
a radiation cooling mode. As shown in fig. 3, the solar heat collector is suitable for the conditions that sunlight is strong in the daytime and a user has a refrigeration demand, and when the sun irradiates the photovoltaic heat collector 7, on one hand, the photovoltaic plate 73 laid on the surface of the photovoltaic heat collector 7 can generate electric energy by using solar energy, and the electric energy can be used for driving electric elements such as the working medium pump 1. On the other hand, on the one hand, the heat energy of the sun irradiating the photovoltaic heat collection generator 7 can be absorbed and utilized by a heat pipe layer 72 below the photovoltaic layer to heat the refrigerant conveyed by the working medium pump 1, so that the refrigerant is gasified, expanded, heated and boosted in the generator cavity 71 to form a high-temperature and high-pressure gaseous refrigerant, the gaseous refrigerant flows through the four-way valve 6, the four-way valve 6 is not electrified, the outlet pipe 75 is communicated with the main pipe of the ejector 2, the evaporator 4 is communicated with the branch pipe of the ejector 2, the high-temperature and high-pressure refrigerant flows to the ejector 2, the high-temperature and high-pressure refrigerant is condensed by the condenser 3 to form a liquid refrigerant, after passing through the second one-way valve 9, a part of the refrigerant returns to the photovoltaic heat collection generator 7 through the working medium pump 1, a part of the refrigerant passes through the throttle valve 5 to be, then to the branch of the ejector 2, and flows to the condenser 3 together with the refrigerant from the generator chamber 71 due to the entrainment of the ejector 2, thus forming a jet refrigeration cycle.
And a refrigerant working medium circulation refrigeration mode. As shown in fig. 4, the solar air conditioner is suitable for the conditions that sunlight is weak, outdoor temperature is low, and a user has a refrigeration demand. At this time, the four-way valve 6 is energized, and the outlet pipe 75 is directly communicated with the evaporator 4, and the main path and the branch path of the ejector 2 are communicated. The working medium pump 1 drives the refrigerant to flow to the photovoltaic heat collection generator 7, the refrigerant can be cooled in the heat pipe layer 72 due to low outdoor temperature, then flows to the four-way valve 6, passes through the evaporator 4, exchanges heat with air at indoor low-temperature refrigerant to achieve the purpose of refrigeration, and then reaches the working medium pump 1 through the first one-way valve 8 to complete the whole cycle. No refrigerant flows through the ejector 2 and the condenser 3 due to the communication between the main circuit and the branch circuit of the ejector 2 and the action of the second check valve 9.
And a refrigerant working medium circulation heating mode. As shown in fig. 5, the solar energy heating system is suitable for the conditions that sunlight is strong, outdoor temperature is high, and a user has a heating demand. At this time, the four-way valve 6 is energized, and the outlet pipe 75 is directly communicated with the evaporator 4, and the main path and the branch path of the ejector 2 are communicated. The working medium pump 1 drives the refrigerant to flow to the photovoltaic heat collection generator 7, the refrigerant can be heated in the heat pipe layer 72 due to high outdoor temperature, then flows to the four-way valve 6, passes through the evaporator 4, can exchange heat with the indoor at indoor high-temperature refrigerant to achieve the purpose of heating, and then reaches the working medium pump 1 through the first one-way valve 8 to complete the whole cycle. No refrigerant flows through the ejector 2 and the condenser 3 due to the communication between the main circuit and the branch circuit of the ejector 2 and the action of the second check valve 9.
As another embodiment, the photovoltaic panel is replaced with a photovoltaic thin film cell.
As another embodiment, the structural form of the evaporator and the condenser is replaced by one or more of combination of finned tube heat exchangers, microchannel heat exchange and micro-scale heat exchangers.
As another embodiment, the heat exchange form between the evaporator and the condenser may be forced convection heat exchange between air and refrigerant, or natural convection heat exchange.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. A solar photovoltaic jet refrigeration and heating system with a four-way valve comprises a refrigeration system, wherein the refrigeration system comprises a working medium pump, an ejector, a condenser, an evaporator, a throttle valve, a solar thermal collector and a generator; the generator is communicated with a main path of the ejector, the ejector is communicated with the condenser, the condenser is communicated with the working medium pump, the working medium pump is communicated with the generator, a branch of the ejector is communicated with the evaporator, the evaporator is communicated with the throttling valve, the throttling valve is communicated with the working medium pump, and the generator is characterized in that: the heating system is provided with a four-way valve which is communicated between the generator and the main path of the ejector, and the other two paths of the four-way valve are respectively communicated with the branch path of the ejector and the evaporator.
2. The solar photovoltaic jet cooling and heating system with the four-way valve according to claim 1, characterized in that: and two ends of the throttle valve are communicated with a first one-way valve in parallel.
3. The solar photovoltaic jet cooling and heating system with the four-way valve according to claim 1, characterized in that: and a second one-way valve is communicated between the condenser and the working medium pump.
4. The solar photovoltaic jet cooling and heating system with the four-way valve according to claim 1, characterized in that: the solar heat collector and the generator are integrated into an integrated heat collection generator.
5. The solar photovoltaic jet cooling and heating system with the four-way valve according to claim 4, characterized in that: the surface of the heat collection generator is provided with a photovoltaic panel and is integrated into an integrated photovoltaic heat collection generator.
6. The solar photovoltaic jet cooling and heating system with the four-way valve according to claim 5, characterized in that: the photovoltaic heat collection generator comprises a generator cavity, a heat pipe layer and a photovoltaic plate, wherein the heat pipe layer is located on the left side of the generator cavity, the photovoltaic plate is located on the left side of the heat pipe layer, the heat pipe layer is communicated with an inlet pipe, and the generator cavity is communicated with an outlet pipe.
7. The solar photovoltaic jet cooling and heating system with the four-way valve according to claim 6, characterized in that: the outlet pipe is communicated with the four-way valve, and the inlet pipe is communicated with the working medium pump.
8. The solar photovoltaic jet cooling and heating system with the four-way valve according to claim 5, characterized in that: the photovoltaic panel is replaced by a photovoltaic thin film cell.
9. The solar photovoltaic jet cooling and heating system with the four-way valve according to claim 1, characterized in that: the structural form of the evaporator and the condenser is one or a combination of a finned tube heat exchanger, microchannel heat exchange and a microscale heat exchanger.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921214306.1U CN210718193U (en) | 2019-07-30 | 2019-07-30 | Solar photovoltaic jet refrigeration and heating system with four-way valve |
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| CN201921214306.1U CN210718193U (en) | 2019-07-30 | 2019-07-30 | Solar photovoltaic jet refrigeration and heating system with four-way valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112393455A (en) * | 2019-07-30 | 2021-02-23 | 珠海格力电器股份有限公司 | Solar photovoltaic jet refrigeration and heating system with four-way valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112393455A (en) * | 2019-07-30 | 2021-02-23 | 珠海格力电器股份有限公司 | Solar photovoltaic jet refrigeration and heating system with four-way valve |
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