CN115823718A - Energy-saving air conditioning system heat pump system - Google Patents
Energy-saving air conditioning system heat pump system Download PDFInfo
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- CN115823718A CN115823718A CN202211440235.3A CN202211440235A CN115823718A CN 115823718 A CN115823718 A CN 115823718A CN 202211440235 A CN202211440235 A CN 202211440235A CN 115823718 A CN115823718 A CN 115823718A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 34
- 239000003507 refrigerant Substances 0.000 claims abstract description 90
- 238000010438 heat treatment Methods 0.000 claims abstract description 40
- 238000005057 refrigeration Methods 0.000 claims abstract description 15
- 238000011282 treatment Methods 0.000 claims abstract description 9
- 238000012545 processing Methods 0.000 claims abstract description 6
- 239000002826 coolant Substances 0.000 claims description 27
- 238000003860 storage Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 16
- 238000009825 accumulation Methods 0.000 claims description 15
- 238000005192 partition Methods 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 7
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- 230000000694 effects Effects 0.000 abstract description 21
- 238000004134 energy conservation Methods 0.000 abstract description 2
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- 230000009286 beneficial effect Effects 0.000 description 2
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- 230000006872 improvement Effects 0.000 description 2
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- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
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- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
The invention provides an energy-saving air-conditioning system heat pump system, belonging to the technical field of heat pump energy saving, comprising: when the external environment temperature is higher than a preset value, the low-temperature refrigerant discharged by the expansion valve cools the air discharged by the first fan through the first heat exchanger; the second fan discharges indoor air to the outside and cools the high-temperature and high-pressure refrigerant discharged by the compressor through the second heat exchanger. When the temperature of the external environment is lower than a preset value, the air is filtered and discharged into a room by a second fan, and the high-temperature and high-pressure refrigerant discharged by a compressor is used for heating the air discharged by the second fan through a second heat exchanger; the first fan discharges indoor air to the outside and heats the low-temperature refrigerant discharged by the expansion valve through the first heat exchanger, so that heating and fresh air processing are completed. The energy-saving heat pump system of the air conditioning system provided by the invention utilizes the energy wasted by the traditional heat pump system on the basis of ensuring fresh air treatment and refrigeration and heating, thereby achieving the effect of energy conservation.
Description
Technical Field
The invention belongs to the technical field of heat pump energy conservation, and particularly relates to a heat pump system of an energy-saving air conditioning system.
Background
The air source heat pump is one of heat pump technologies, has the reputation of the natural energy carrier, and has the advantages of low use cost, easy operation, good heating effect, safety, cleanness and the like.
However, the conventional heat pump system has a problem that a high-temperature refrigerant discharged from a compressor needs to be cooled by an outdoor condenser, that is, heat generated by the compressor is dissipated to the ambient environment. And although the current fresh air system adopts full heat exchange, partial indoor heat or cold can still be discharged outdoors, and finally, the resource waste is serious.
Disclosure of Invention
The invention aims to provide an energy-saving heat pump system of an air conditioning system, and aims to solve the problem that the traditional heat pump system and a fresh air system cause resource waste.
In order to achieve the purpose, the invention adopts the technical scheme that: provided is an energy-saving air conditioning system heat pump system, including:
when the external environment temperature is higher than a preset value, filtering air by a first fan and discharging the air into a room, and cooling the air discharged by the first fan by a low-temperature refrigerant discharged by an expansion valve through a first heat exchanger; discharging indoor air out of the room by a second fan, cooling the high-temperature and high-pressure refrigerant discharged by the compressor by a second heat exchanger, and finally completing refrigeration and fresh air treatment;
when the temperature of the external environment is lower than a preset value, the second fan filters air and discharges the air into a room, and the compressor discharges the high-temperature and high-pressure refrigerant to heat the air discharged by the second fan through the second heat exchanger; the first fan exhausts indoor air to the outside and heats the low-temperature refrigerant exhausted by the expansion valve through the first heat exchanger to complete heating and fresh air treatment.
In one possible implementation manner, the cooling, by the low-temperature refrigerant discharged from the expansion valve, the air discharged by the first fan through the first heat exchanger includes:
the outdoor air is sucked into the room and filtered under the action of the first fan, and then is blown to the first heat exchanger;
and the refrigerant discharged by the expansion valve enters the first heat exchanger and then exchanges heat with air so as to raise the temperature and finally is discharged into the compressor.
In one possible implementation manner, the heating, by the second heat exchanger, the air discharged by the second fan by the refrigerant with high temperature and high pressure discharged by the compressor includes:
the outdoor air is sucked into the room and filtered under the action of the second fan, and then is blown to the second heat exchanger;
and the refrigerant discharged by the compressor enters the second heat exchanger, then exchanges heat with air so as to reduce the temperature and is finally discharged into the expansion valve.
In one possible implementation, when the first fan discharges air, the second fan does not filter the air; when the second fan discharges air, the first fan does not filter the air.
In one possible implementation manner, the heating, by the second heat exchanger, the air discharged by the second fan by the refrigerant with high temperature and high pressure discharged by the compressor includes:
a heating pipe is communicated between the compressor and the expansion valve; the refrigerant discharged by the compressor heats water through the heating pipe;
and changing the proportion of the refrigerant flowing through the second heat exchanger and the heating pipe through an adjusting valve.
In a possible implementation manner, the step of cooling, by a low-temperature refrigerant discharged by the expansion valve, air discharged by the first fan through the first heat exchanger includes:
a cold accumulation tank is communicated between the expansion valve and the compressor, and the refrigerant discharged by the expansion valve cools the coolant in the cold accumulation tank;
and the proportion of the refrigerant flowing through the first heat exchanger and the cold storage tank is changed through an adjusting valve.
In a possible implementation manner, the cold storage tank is communicated with the first heat exchanger through a heat conduction pipe, and the cold storage tank cools the first heat exchanger through a cold storage agent and the heat conduction pipe.
In a possible implementation manner, a partition plate is fixed in the middle of the cold accumulation tank, and the cold accumulation tank is divided into an upper cavity and a lower cavity by the partition plate; the partition plate is provided with a flow valve, and the flow valve is used for controlling the amount of the cooled coolant flowing into the lower cavity; one end of the heat conduction pipe is fixed at the bottom of the lower cavity; the upper cavity is communicated with the expansion valve, a pump is installed at the bottom of the lower cavity, and the pump is used for lifting the coolant to the upper cavity from the lower cavity to complete heat exchange between the coolant and the coolant.
In a possible implementation manner, the discharging of indoor air by the second fan is performed outdoors, and the cooling of the refrigerant at high temperature and high pressure discharged by the compressor is performed by the second heat exchanger, and finally, the completion of the refrigeration and the fresh air processing further includes:
the rotating speed and the rotating direction of the fans in the first fan and the second fan are adjusted, so that the treated air discharged by the first fan and the second fan can cover the range of motion of a human body and ensure comfort.
In a possible implementation manner, a breather pipe and a filter screen are arranged in each of the first fan and the second fan, and electromagnetic valves are arranged on the breather pipes; the solenoid valve controls the opening or closing of the vent pipe for air to flow directly through the vent pipe or the filter screen.
The heat pump system of the energy-saving air conditioning system provided by the invention has the beneficial effects that: compared with the prior art, when the external environment temperature is higher than the preset value in the heat pump system of the energy-saving air-conditioning system, the first fan filters air and discharges the filtered air into a room, and the low-temperature refrigerant discharged by the expansion valve can cool the air through the first heat exchanger when the air is discharged into the room. The second fan discharges indoor air outdoors, and because the indoor air temperature is lower, in order to complete the recovery of resources, the second fan can cool down the high-temperature and high-pressure refrigerant discharged by the compressor through the second heat exchanger when discharging the indoor air, and finally refrigeration and fresh air treatment are completed.
When the external environment is lower than the preset value, the air is filtered and discharged into the room by the second fan, the high-temperature and high-pressure refrigerant discharged by the compressor heats the discharged air by the second heat exchanger, and the second heat exchanger cools the air. At the moment, the indoor air is discharged out of the room by the first fan, and because the indoor air is higher in temperature at the moment, the higher air heats the low-temperature refrigerant discharged by the expansion valve through the first heat exchanger, so that the heat recovery and heating are completed.
In this application, through the linkage that advances first fan, second fan, compressor and expansion valve, on guaranteeing the basis that new trend was handled and the refrigeration heats, utilize the extravagant energy of traditional heat pump system, reached energy-conserving effect.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a flowchart of a heat pump system of an energy-saving air conditioning system according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a heat pump system of an energy-saving air conditioning system according to the present invention will now be described. An energy-efficient air conditioning system heat pump system comprising:
when the external environment temperature is higher than a preset value, filtering and discharging air into a room by a first fan, and cooling the air discharged by the first fan by a low-temperature refrigerant discharged by an expansion valve through a first heat exchanger; the second fan discharges indoor air to the outside and cools the high-temperature and high-pressure refrigerant discharged by the compressor through the second heat exchanger, and finally refrigeration and fresh air treatment are finished.
When the temperature of the external environment is lower than a preset value, the air is filtered and discharged into a room by a second fan, and the high-temperature and high-pressure refrigerant discharged by a compressor is used for heating the air discharged by the second fan through a second heat exchanger; the first fan exhausts indoor air to the outside and heats the low-temperature refrigerant exhausted by the expansion valve through the first heat exchanger, so that heating and fresh air processing are completed.
The heat pump system of the energy-saving air conditioning system has the beneficial effects that: compared with the prior art, when the external environment temperature is higher than the preset value in the heat pump system of the energy-saving air-conditioning system, the first fan filters air and discharges the filtered air into a room, and the low-temperature refrigerant discharged by the expansion valve can cool the air through the first heat exchanger when the air is discharged into the room. The second fan discharges indoor air outdoors, and because the indoor air temperature is lower, in order to complete the recovery of resources, the second fan can cool down the high-temperature and high-pressure refrigerant discharged by the compressor through the second heat exchanger when discharging the indoor air, and finally refrigeration and fresh air treatment are completed.
When the external environment is lower than the preset value, the air is filtered and discharged into the room by the second fan, the high-temperature and high-pressure refrigerant discharged by the compressor heats the discharged air by the second heat exchanger, and the second heat exchanger cools the air. At the moment, the indoor air is discharged out of the room by the first fan, and because the indoor air is higher in temperature at the moment, the higher air heats the low-temperature refrigerant discharged by the expansion valve through the first heat exchanger, so that the heat recovery and heating are completed.
In this application, through the linkage that advances first fan, second fan, compressor and expansion valve, on guaranteeing the basis that new trend was handled and the refrigeration heats, utilize the extravagant energy of traditional heat pump system, reached energy-conserving effect.
An air source heat pump is an energy-saving device which uses high-level energy to enable heat to flow from low-level heat source air to a high-level heat source, and is a form of heat pump. As the name implies, a heat pump, like a pump, can convert low-level heat energy (such as heat contained in air, soil and water) which cannot be directly utilized into high-level heat energy which can be utilized, thereby achieving the purpose of saving part of high-level energy (such as coal, gas, oil, electric energy and the like).
However, when the existing air source heat pump is used, along with the normal use time, dust and impurities, such as air dust, can be gathered on an evaporator of the air source heat pump, so that the air circulation of the evaporator can be seriously obstructed, the working efficiency is influenced, electric energy is wasted, and the practicability is poor.
With the improvement of the living standard of residents, the requirement on the comfort of residences is higher and higher. For houses such as large flat floors, compound ocean houses or villas, floor heating is usually adopted for heat supply.
If the area of a house exceeds 360 square meters and the heat production is 100 w/square meter, for example, 36Kw of heat production is needed. At present, the maximum capacity of a side-air outlet household heat pump heater is generally 34Kw, and a single side-air outlet household heat pump heater cannot meet the requirement, so that a top-air outlet heat pump heater with a large heating capacity is adopted for heating, but the noise of the top-air outlet heat pump heater is large. Adopt two sets of side air-out household heat pump heating machines to heat, the noise of side air-out household heat pump heating machine is less, but the user when using, need carry out the switch on and off respectively to every heat pump heating machine and control and temperature setting etc. not only the operation gets up complicacy, can not cause the wasting of resources according to the reasonable control of opening and stopping of actual load to two heat pump heating machines moreover.
With the proposal and implementation of the policy related to 'coal to electricity', the vapor compression type air source heat pump is favored by people with unique advantages. A steam compression type air source heat pump is a technology which consumes a small amount of electric energy to convert outdoor low-grade heat energy into high-grade heat energy. The air source heat pump has great potential in the aspects of reducing greenhouse gas emission, improving the quality of atmospheric environment, improving the utilization rate of energy and the like, so the air source heat pump is developed rapidly in China, and particularly in the northern area in recent two years.
The air source heat pump is driven by a motor, utilizes the working principle of vapor compression refrigeration cycle, and takes ambient air as a cold (hot) source to prepare cold (hot) air or cold (hot) water. The air energy (source) heat pump uses the heat in the air as a low-temperature heat source, exchanges heat through a condenser or an evaporator in a traditional air conditioner, and extracts or releases heat energy through a circulating system.
The air source heat pump hot water unit is an energy-saving environment-friendly hot water supply device which can replace a boiler and is not limited by resources, green pollution-free cold coal is adopted to absorb heat in air, and the domestic hot water with the temperature of more than 50 ℃ is produced by the work of a compressor.
At present, the air conditioning recovery of the air source heat pump hot water unit is mostly realized by connecting an air outlet with a kitchen through an air pipe, so that blown cold air can directly enter the kitchen to achieve the refrigeration effect, and the utilization rate of the air conditioning is reduced by the aid of the mode because the air conditioning emission speed is high.
The application provides a heat pump system capable of effectively reducing energy consumption, and living standard is guaranteed on the basis of meeting comfort.
In some embodiments of the heat pump system of the energy-saving air conditioning system provided in the present application, the cooling of the air discharged by the first fan by the low-temperature refrigerant discharged by the expansion valve through the first heat exchanger includes:
the outdoor air is sucked into the room and filtered under the action of the first fan, and then is blown to the first heat exchanger.
The refrigerant discharged from the expansion valve enters the first heat exchanger and exchanges heat with air, so that the refrigerant is heated and finally discharged into the compressor.
The air source heat pump has a core including a compressor, a condenser, an expansion valve, an evaporator, and the like. Its refrigerated principle does, and air source heat pump set becomes high temperature high pressure gas with the low pressure refrigerant and discharges, and then high temperature high pressure gas transmits to the condenser, and the heat can be followed the copper pipe and to the water tank the inside to can provide hot water or warm up. The cooled refrigerant can be changed into liquid state, and is transferred into evaporator by means of expansion valve, and finally under the action of fan the external high-temp. gas can be flowed in the evaporator, and the energy in the air can be absorbed by evaporator, so that the temperature of air can be quickly cooled, and finally the cold air can be formed, so that said invented repeated circulation can obtain the effect of continuous refrigeration.
At present can install new fan in current building, in order to guarantee the mobility of air and make indoor have better air quality, generally adopt new fan to carry out air cycle, the core of new fan filters and the heat transfer core for new fan.
The fresh air machine is an effective air purification device, can circulate indoor air, on one hand, exhausts indoor dirty air outdoors, on the other hand, inputs outdoor fresh air into the room after measures such as sterilization, disinfection, filtration and the like, and ensures that the air in the room is fresh and clean air at every moment. The fresh air system realizes indoor and outdoor air circulation through the exhaust and supply air pipelines, and simultaneously purifies the supplied air to realize total heat exchange. The fresh air system is a set of independent air processing system consisting of an air supply system and an air exhaust system, and the basic principle and the function of the fresh air system are that outdoor air is led in and indoor foul air is exhausted at the same time, so that the effect of ventilation without opening a window is achieved.
In summer, the temperature of outdoor gas is high, although the heat exchanger in the fresh air system can primarily cool the entering outdoor gas through the indoor low-temperature gas, it should be noted that the fresh air and the old air are only heat transfer but not transfer, that is, the fresh air can discharge the gas with the still low temperature outdoors and discharge the gas with the still high temperature indoors at the same time.
In order to solve the problem, be provided with first fan and second fan in this application, first fan is used for leading outdoor new trend to indoor when summer, and the second fan is used for discharging indoor wind to outdoor. More importantly, a first heat exchanger is arranged at the air outlet of the first fan, and a second heat exchanger is arranged at the air inlet of the second fan. The first heat exchanger and the second heat exchanger can be regarded as coils with heat transfer function.
The low-temperature refrigerant discharged from the expansion valve enters the first heat exchanger, and the temperature of the outdoor gas can be reduced through the first heat exchanger due to the fact that the temperature of the refrigerant discharged from the expansion valve is low, and finally the refrigeration effect is achieved.
The temperature of indoor gas is low and impurities are doped under the condition of refrigeration, the second fan discharges the old air to the outside, in order to recover energy, a high-temperature and high-pressure refrigerant discharged from the compressor enters the second heat exchanger, the temperature of the second heat exchanger is reduced by virtue of the gas with low indoor temperature, and at the moment, the temperature of the second heat exchanger can be reduced by virtue of the gas with low indoor temperature, so that the effect of reducing the internal refrigerant is achieved. In this case, the second heat exchanger functions like a condenser, but does not require a fan to achieve the cooling effect. Carry out effectual combination and linkage with new fan and air conditioning system in this application, reduced required component, improved the utilization ratio of the energy simultaneously, reduced the consumption.
In some embodiments of the heat pump system of the energy-saving air conditioning system provided in the present application, the heating of the air discharged by the second fan through the second heat exchanger by the refrigerant of high temperature and high pressure discharged from the compressor includes:
and the outdoor air is sucked into the room and filtered under the action of the second fan, and then is blown to the second heat exchanger.
The refrigerant discharged from the compressor enters the second heat exchanger and then exchanges heat with air so as to be cooled and finally discharged into the expansion valve.
In winter, heating is needed, a traditional method is that an air source heat pump is used as a common air conditioner, indoor air is repeatedly heated through an indoor unit of the air conditioner, the temperature requirement can be met through the arrangement, but the indoor air cannot be purified, and at the moment, if a common fresh air fan on the market is used, fresh air can be realized, but indoor heat can be led to the outside through the air part, so that waste is caused.
In order to achieve the filtering effect, the second exchanger is used for receiving high-temperature and high-pressure gas discharged by the compressor, the temperature of the second exchanger is high, and at the moment, external low-temperature gas can enter the room from the second fan. Because the temperature of the second exchanger is higher, the temperature of the low-temperature gas contacting with the second exchanger is increased when the low-temperature gas is discharged from the second fan, and the effect of heating the indoor space is achieved.
At the moment, the first fan discharges the gas, the temperature of the first exchanger is lower, the indoor temperature is higher, the higher gas has a warming effect on the first exchanger, the refrigerant in the first exchanger flows into the compressor after the temperature is raised, the load of the compressor is reduced, the gas with the higher temperature is prevented from being discharged outdoors, and the energy-saving effect is finally achieved.
In some embodiments of the energy efficient air conditioning system heat pump system provided herein, the second blower does not filter air when the first blower discharges air; when the second fan discharges air, the first fan does not filter the air.
In order to improve the application and the energy-conserving effect of new trend system in this application, the air outlet and the air intake setting of traditional heat exchange new trend machine are comparatively close, this is because inside interchanger needs carry out the heat exchange, and the consequence that the design of above-mentioned new trend machine caused is that, and the effect of the position air purification far away from new trend machine air outlet is comparatively poor.
This application is in order to solve above-mentioned problem, sets up first fan and second fan interval certain distance, is the diagonal angle setting with first fan and second fan indoor under the normal conditions. When the first fan discharges the fresh air, the second fan discharges the indoor old air. When the second fan discharges the fresh air, the first fan discharges the indoor old air. And need ensure when discharge gas, fresh air fan can not carry out unnecessary filtration to gas, through above-mentioned setting, has improved the cleanliness factor of indoor air.
In some embodiments of the heat pump system of the energy-saving air conditioning system provided in the present application, the heating of the air discharged by the second fan through the second heat exchanger by the refrigerant of high temperature and high pressure discharged from the compressor includes:
a heating pipe is communicated between the compressor and the expansion valve; the refrigerant discharged from the compressor heats water through the heating pipe.
The proportion of the refrigerant flowing through the second heat exchanger and the heating pipe is changed through the regulating valve.
If the high-temperature and high-pressure refrigerant discharged by the compressor is completely introduced into the second heat exchanger, the temperature of the second heat exchanger is higher, so that a large amount of heat is radiated indoors, and the final result is that the indoor temperature cannot be reduced in summer and is overhigh in winter.
In order to solve the above problem, it is necessary to be able to reasonably adjust the amount of refrigerant flowing in the second heat exchanger according to actual conditions. In order to achieve the above effect, the high-temperature and high-pressure refrigerant discharged from the compressor flows to the heating pipe and the second heat exchanger.
The heating pipe sets up in hot-water tank for heat in order to satisfy daily use to the water in the hot-water tank. And regulating valves are arranged on the air inlet sides of the heating pipe and the second heat exchanger. The proportion of the high-temperature and high-pressure refrigerant between the second heat exchanger and the heating pipe is reasonably distributed by adjusting the opening of the adjusting valve. When the temperature needs to be raised through the second heat exchanger, more high-temperature and high-pressure refrigerants flow into the second heat exchanger. When the hot water generation speed needs to be increased, more high-temperature and high-pressure refrigerants pass through the heating pipe.
In some embodiments of the heat pump system of the energy-saving air conditioning system provided in the present application, the cooling of the air discharged by the first fan by the low-temperature refrigerant discharged by the expansion valve through the first heat exchanger includes:
the cold storage tank is communicated between the expansion valve and the compressor, and the coolant discharged by the expansion valve cools the coolant in the cold storage tank.
The proportion of the refrigerant flowing through the first heat exchanger and the cold storage tank is changed through the regulating valve.
In part of the time period in summer, a fresh air system does not need to be opened, or outdoor gas does not need to be treated in the operation process of the heat pump. Therefore, the low-temperature refrigerant discharged by the expansion valve flows to the first heat exchanger and the cold accumulation tank, a coil pipe for heat exchange is arranged in the cold accumulation tank, the coil pipe is used for receiving the low-temperature refrigerant discharged by the expansion valve, and a certain amount of cold accumulation agent is stored in the cold accumulation tank. The inlet sides of the cold accumulation tank and the first heat exchanger are respectively provided with an adjusting valve, and the proportion of the refrigerant between the first heat exchanger and the cold accumulation tank can be adjusted through the adjusting valves.
When the refrigerant discharged from the expansion valve flows into the coil pipe in the cold storage tank, the cold storage agent in the cold storage tank is used as the reserved low-temperature refrigerant and can be temporarily stored. Even if the heat pump is not started, the stored refrigerant can be used for achieving the effect of refrigerating the indoor space through the first fan.
In some embodiments of the energy-saving air conditioning system heat pump system provided by the present application, the cold storage tank is communicated with the first heat exchanger through a heat pipe, and the cold storage tank cools the first heat exchanger through the cold storage agent and the heat pipe.
In this application, if only need satisfy when domestic water does not need to use the new trend system, the low temperature refrigerant of expansion valve exhaust can flow into in the cold-storage jar this moment, and the heat of cold-storage agent is absorbed by the refrigerant in the cold-storage jar, and the temperature of cold-storage agent self can reduce.
After the heat pump is turned off, the coolant in the cold accumulation tank absorbs the heat of the first heat exchanger through the heat conduction pipe, and the temperature of the first heat exchanger is reduced, so that the gas entering the room can be cooled without turning on the heat pump.
In some embodiments of the heat pump system of the energy-saving air conditioning system provided by the present application, a partition is fixed in the middle of the cold storage tank, and divides the cold storage tank into an upper chamber and a lower chamber; the partition board is provided with a flow valve which is used for controlling the amount of the cooled coolant flowing into the lower cavity; one end of the heat conduction pipe is fixed at the bottom of the lower cavity; the upper cavity is communicated with the expansion valve, the bottom of the lower cavity is provided with a pump, and the pump is used for lifting the coolant to the upper cavity from the lower cavity to complete the heat exchange between the coolant and the coolant.
If the heat pipe directly connects the first heat exchanger to the cold storage tank, the temperature of the first heat exchanger will be initially minimized and subsequently cannot be effectively adjusted.
In order to solve the problems, a partition board is arranged in the cold accumulation tank and divides the cold accumulation tank into an upper cavity and a lower cavity. One end of the heat conduction pipe is communicated with the first heat exchanger, and the other end of the heat conduction pipe extends into the lower cavity. The middle part of the partition plate is provided with a flow valve, the bottom of the lower cavity is communicated with a low-temperature resistant pump, and the pump can lift the coolant in the lower cavity to the upper cavity. The amount of the coolant entering the lower cavity from the coolant in the upper cavity is adjusted by controlling the opening degree of the flow valve.
The partition plate is a heat insulating material, and the cold storage agent is in the lower cavity before actual use. The heat pipe is connected with the first heat exchanger, so that the temperature of the coolant in the lower cavity is relatively high, when the low-temperature refrigerant discharged by the expansion valve enters the upper cavity in the cold storage tank, the pump lifts the coolant with relatively high temperature to the upper cavity, heat exchange exists between the high-temperature coolant and the low-temperature refrigerant but the coolant is not mixed, a coil feeling for heat exchange is fixed in the upper cavity, and finally all the coolant is lifted to the upper cavity along with the continuous transmission of the low-temperature refrigerant.
When the heat conduction pipe needs to be cooled, the flow valve is used for adjusting the amount of coolant entering the lower cavity, so that the first heat exchanger is reduced to the preset temperature.
In some embodiments of the energy-saving air conditioning system heat pump system provided in the present application, the second fan discharges indoor air to the outside and cools down the high-temperature and high-pressure refrigerant discharged from the compressor through the second heat exchanger, and finally, the refrigeration and the fresh air processing are completed further including:
through the rotational speed and the direction of rotation of fan in the adjustment first fan and the second fan, make the first fan and the second fan of emiting into can cover human home range and guarantee the travelling comfort through the air of handling.
In order to achieve the energy saving effect, the distribution of the refrigerant at each position needs to be changed by each adjusting valve. When the output speed of hot water needs to be increased, the amount of refrigerant flowing into the heating pipe in the hot water tank is increased. When the temperature of the indoor air needs to be properly increased, the amount of the refrigerant in the second heat exchanger can be increased by adjusting the valve.
If the temperature of the hot water tank and the cold storage tank is required, all the refrigerants can flow through the corresponding heat exchangers. More importantly, the working power of the compressor can be properly reduced at the moment, so that the aim of saving energy is achieved.
The amount of the refrigerant flowing into the first heat exchanger and the second heat exchanger is adjusted in real time according to the surrounding environment, if the external environment temperature is increased, the amount of the refrigerant entering the first heat exchanger needs to be reduced, and finally the purpose of constant temperature is achieved through dynamic adjustment.
The fans are installed in the first fan and the second fan, and outdoor air enters the room through the rotation of the fans. If the first fan makes outside air enter the room, the fan of the second fan is not normally rotated in order to maintain the room at a slight positive pressure.
Because the temperature of the first heat exchanger is lower than that of the second heat exchanger in practical application. Taking the summer as an example, if the external environment temperature is low, the indoor temperature is lower if the first fan is still used for making air enter the room. In order to guarantee the comfort, outdoor air is guided to the indoor by the second fan, the air is heated through the second heat exchanger, and the final purpose is to guarantee the suitability of the indoor temperature. That is, the indoor environment may be dynamically adjusted by increasing the direction of rotation of the first and second blowers during a time period.
Because people are sensitive to cold and heat, an induction sensor can be installed indoors, the current position of people is determined through the sensor, the amount of the refrigerant is changed through the adjusting valve, and the fan discharges comfortable gas which can be sensed by human bodies. Take summer as an example, if ambient temperature is suitable, can be indoor by the second fan with gas drainage, but the volume that the high temperature refrigerant flowed into the second heat exchanger this moment is less to the second fan is nearer with human distance, in order to guarantee the travelling comfort. In order to obtain the cooling effect, the first fan can also guide the air to the indoor space at a certain speed to achieve a micro-positive pressure state.
In some embodiments of the heat pump system of the energy-saving air conditioning system provided by the present application, a breather pipe and a filter screen are installed in both the first fan and the second fan, and electromagnetic valves are installed on both the breather pipes; the solenoid valve controls the opening or closing of the vent pipe for air to flow directly through the vent pipe or the filter screen.
In this application, introduce indoor new trend by first fan in summer, the second fan is used for discharging indoor wind to outdoor. In winter, the second fan is used for leading outdoor fresh air to indoors, and the first fan is used for exhausting indoor air to outdoors. The wind directions in two seasons are opposite, if no treatment is carried out, and a filter screen is arranged in each fan, indoor wind needs to be filtered and then can be discharged, and air resistance and unnecessary work are caused.
In order to solve the problem, vent pipes are arranged on the first fan and the second fan, and electromagnetic valves are installed on the vent pipes. When the first fan is required to filter gas, the electromagnetic valve in the first fan is closed, the vent pipe is cut off, and the outside air can enter the room only through the filter screen in the first fan. At the moment, the electromagnetic valve in the second fan is opened, and because the resistance of the vent pipe in the second fan is small, indoor gas can be discharged through the vent pipe, and smooth circulation of the gas is ensured through the arrangement.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. Energy-saving air conditioning system heat pump system characterized in that includes:
when the external environment temperature is higher than a preset value, filtering air by a first fan and discharging the air into a room, and cooling the air discharged by the first fan by a low-temperature refrigerant discharged by an expansion valve through a first heat exchanger; discharging indoor air out of the room by a second fan, cooling the high-temperature and high-pressure refrigerant discharged by the compressor by a second heat exchanger, and finally completing refrigeration and fresh air treatment;
when the temperature of the external environment is lower than a preset value, the second fan filters air and discharges the air into a room, and the compressor discharges the high-temperature and high-pressure refrigerant to heat the air discharged by the second fan through the second heat exchanger; the first fan exhausts indoor air to the outside and heats the low-temperature refrigerant exhausted by the expansion valve through the first heat exchanger to complete heating and fresh air treatment.
2. The heat pump system of energy-saving air conditioning system according to claim 1, wherein the cooling of the air discharged by the first fan by the low-temperature refrigerant discharged from the expansion valve through the first heat exchanger comprises:
the outdoor air is sucked into the room and filtered under the action of the first fan, and then is blown to the first heat exchanger;
and the refrigerant discharged by the expansion valve enters the first heat exchanger and then exchanges heat with air so as to raise the temperature and finally is discharged into the compressor.
3. The heat pump system of claim 1, wherein the step of heating the air discharged from the second fan by the refrigerant of high temperature and high pressure discharged from the compressor through the second heat exchanger comprises:
the outdoor air is sucked into the room and filtered under the action of the second fan, and then is blown to the second heat exchanger;
and the refrigerant discharged by the compressor enters the second heat exchanger, then exchanges heat with air so as to reduce the temperature and is finally discharged into the expansion valve.
4. The economized air conditioning system heat pump system as defined in claim 1, wherein said second fan does not filter air when said first fan discharges air; when the second fan discharges air, the first fan does not filter the air.
5. The heat pump system of claim 1, wherein the step of heating the air discharged from the second fan by the refrigerant of high temperature and high pressure discharged from the compressor through the second heat exchanger comprises:
a heating pipe is communicated between the compressor and the expansion valve; the refrigerant discharged by the compressor heats water through the heating pipe;
and changing the proportion of the refrigerant flowing through the second heat exchanger and the heating pipe through an adjusting valve.
6. The heat pump system of energy-saving air conditioning system according to claim 1, wherein the cooling of the air discharged by the first fan by the low-temperature refrigerant discharged from the expansion valve through the first heat exchanger comprises:
a cold accumulation tank is communicated between the expansion valve and the compressor, and the refrigerant discharged by the expansion valve cools the coolant in the cold accumulation tank;
and the proportion of the refrigerant flowing through the first heat exchanger and the cold storage tank is changed through an adjusting valve.
7. An economizer air conditioning system heat pump system as claimed in claim 6 wherein the accumulator tank communicates with the first heat exchanger through a heat pipe, the accumulator tank cooling the first heat exchanger through a coolant and the heat pipe.
8. The energy saving heat pump system of air conditioning system as claimed in claim 7, wherein a partition is fixed in the middle of the cold storage tank, the partition dividing the cold storage tank into an upper chamber and a lower chamber; the partition plate is provided with a flow valve, and the flow valve is used for controlling the amount of the cooled coolant flowing into the lower cavity; one end of the heat conduction pipe is fixed at the bottom of the lower cavity; the upper cavity is communicated with the expansion valve, a pump is installed at the bottom of the lower cavity, and the pump is used for lifting the coolant to the upper cavity from the lower cavity to complete heat exchange between the coolant and the coolant.
9. The heat pump system of claim 1, wherein the second fan discharges indoor air to the outside of the room and cools the high-temperature and high-pressure refrigerant discharged from the compressor through the second heat exchanger, and the cooling and fresh air processing operations are finally completed further comprising:
the rotating speed and the rotating direction of the fans in the first fan and the second fan are adjusted, so that the treated air discharged by the first fan and the second fan can cover the range of motion of a human body and ensure comfort.
10. The energy saving heat pump system of air conditioning system as claimed in claim 1, wherein said first fan and said second fan are installed with air pipes and filter net, and both said air pipes are installed with electromagnetic valves; the solenoid valve controls the opening or closing of the vent pipe for air to flow directly through the vent pipe or the filter screen.
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| CN202211440235.3A CN115823718A (en) | 2022-11-17 | 2022-11-17 | Energy-saving air conditioning system heat pump system |
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| CN202211440235.3A CN115823718A (en) | 2022-11-17 | 2022-11-17 | Energy-saving air conditioning system heat pump system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116367514A (en) * | 2023-04-23 | 2023-06-30 | 河北鸿宇通信器材有限公司 | Communication machine room integrated air conditioning pipeline and cable bridge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116367514A (en) * | 2023-04-23 | 2023-06-30 | 河北鸿宇通信器材有限公司 | Communication machine room integrated air conditioning pipeline and cable bridge |
| CN116367514B (en) * | 2023-04-23 | 2023-09-22 | 河北鸿宇通信器材有限公司 | Communication computer lab air conditioner pipeline and cable bridge frame integrated system |
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