CN209279427U - Energy-saving comfortable split-type air conditioner heat pump system - Google Patents

Abstract

The utility model relates to an energy-saving and comfortable split air conditioner heat pump system. It solves technical problems such as poor operation effect of the existing heat pump air-conditioning system. Including compressor, four-way reversing valve, indoor finned tube heat exchanger, electronic expansion valve, gas-liquid separator, outdoor finned tube heat exchanger, liquid collecting distributor, first solenoid valve, second solenoid valve, The third solenoid valve, the fourth solenoid valve, the fifth solenoid valve, the sixth solenoid valve, etc. The advantage is that the recovered condensed water is distributed to the surface of the fins of the outdoor heat exchanger through the liquid collection distributor, the condensed water evaporates while flowing along the surface of the fins, and the latent heat of evaporation is used to remove part of the heat of the air and the surface of the fins, thereby Reduce the system condensing temperature and increase the COP of the air conditioning unit in summer. It can realize defrosting and heating at the same time, provide continuous and uninterrupted heating to the room, effectively solve the problem of indoor temperature fluctuation caused by defrosting, and greatly improve the thermal comfort of the room.

Description

Energy-saving and comfortable split air-conditioning heat pump system

technical field

The utility model belongs to the technical field of heat pump air conditioners, in particular to an energy-saving and comfortable split air conditioner heat pump system.

Background technique

With the continuous improvement of people's living standards, people have higher and higher requirements for the comfort and cleanliness of living and working environments. Therefore, buildings in most areas of our country have multiple demands for heating in winter, air conditioning in summer, and domestic hot water throughout the year. Since heat pump air conditioners use various advanced energy-saving technologies in the cold and heat sources and inside the system, this makes its It has high energy utilization rate. Existing heat pump air conditioners mainly include an outdoor unit and an indoor unit. The heat exchanger in the outdoor unit is called a condenser, and the heat exchanger in the indoor unit is called an evaporator. When the condenser is working, it is necessary to dissipate heat to the condenser to make the condenser work normally; the more sufficient the heat dissipation, the better the heat exchange effect between the condenser and the air, and the smaller the energy consumption of the condenser. When the evaporator in the existing indoor unit exchanges heat with the indoor air, the water vapor in the air will liquefy to form condensed water. The common heat pump air-conditioning system does not collect the condensed water, and the condensed water is directly discharged, which causes waste of water resources. , and the condensed water is not used reasonably, so that the existing heat pump air-conditioning system has problems such as poor operation effect and low stability.

In order to solve the problems existing in the prior art, people have carried out long-term exploration and proposed various solutions. For example, Chinese patent literature discloses an air conditioner that can recycle condensed water [application number: 201721586006.7], which includes an outdoor unit and a wall for installing the outdoor unit. The outdoor unit includes a casing and a condenser located in the casing; It also includes a water storage tank arranged on the wall, the wall is penetrated with a collection pipe for recovering condensed water, and the collection pipe is connected with the water storage tank; the water storage tank is provided with a booster pump and is connected to the booster water pump The water outlet pipe runs through the shell; the end of the water outlet pipe away from the booster pump is provided with an atomizing nozzle located in the casing, and the spray port of the atomizing nozzle faces the condenser. The above-mentioned scheme solves the problem that the condensed water of the existing air-conditioning heat pump system cannot be reasonably utilized to a certain extent, but the scheme still has the problems of poor stability and poor operation effect.

Contents of the invention

The purpose of the utility model is to solve the above problems and provide an energy-saving and comfortable split air-conditioning heat pump system with simple and reasonable structure.

In order to achieve the above purpose, the utility model adopts the following technical solutions: the energy-saving and comfortable split air-conditioning heat pump system includes a compressor, which is characterized in that the compressor is sequentially connected with the four-way reversing valve, the indoor fin The sheet-tube heat exchanger is connected to the electronic expansion valve, and the outlet pipeline of the electronic expansion valve is divided into two paths, one path is connected to the first electromagnetic valve and the inlet pipeline of the gas-liquid separator through the pipeline, and the other path is connected to the first electromagnetic valve through the pipeline. The two solenoid valves are connected, and the outlet pipeline of the second solenoid valve is divided into two paths, one path is connected with the third solenoid valve and the outlet pipeline of the gas-liquid separator through the pipeline, and the other path is exchanged with the outdoor finned tube in turn through the pipeline. The heater is connected to the four-way reversing valve, and the outlet pipeline of the four-way reversing valve is divided into two routes, one of which is connected with the fourth electromagnetic valve and the inlet pipeline of the compressor through the pipeline, and the other is connected through the pipeline The pipeline is connected with the fifth solenoid valve and the inlet pipeline of the gas-liquid separator, the outlet pipeline of the gas-liquid separator is connected with the sixth solenoid valve and the inlet pipeline of the compressor, and the The top of the outdoor finned tube heat exchanger is provided with a liquid collection distributor connected with the indoor finned tube heat exchanger. This system can fully recycle and utilize the condensed water of the indoor finned tube heat exchanger during summer operation, which not only solves the energy waste caused by the direct discharge of condensed water in the existing split air conditioning system, but also reduces the condensation temperature of the outdoor finned tube heat exchanger , improve system COP.

In the above-mentioned energy-saving and comfortable split air-conditioning heat pump system, the bottom of the gas-liquid separator is provided with an electric heating tube. When the system is running in the defrosting heating mode, the low-temperature and low-pressure gas-liquid two-phase refrigerant that has been throttled by the electronic expansion valve does not enter the outdoor finned tube heat exchanger for heat absorption and evaporation, but by switching different The solenoid valve directly enters the gas-liquid separator, and the electric heating tube in the gas-liquid separator is used to heat and vaporize the liquid refrigerant, and the heating power of the electric heating tube is controlled by the indoor load.

In the above-mentioned energy-saving and comfortable split air-conditioning heat pump system, an electric heating wire is arranged on the pipeline connecting the second solenoid valve and the third solenoid valve. Obviously, an electric heating wire is installed on the branch pipe from the outlet of the gas-liquid separator to the inlet of the outdoor finned tube heat exchanger. The saturated refrigerant vapor provides the required heat for the defrosting of the outdoor finned tube heat exchanger, and the heating power of the electric heating wire is controlled by the superheat of the refrigerant at the outlet of the outdoor finned tube heat exchanger.

In the above-mentioned energy-saving and comfortable split air-conditioning heat pump system, the liquid collection distributor has at least one collection channel, and the collection channels are respectively connected to several liquid distribution channels, and one end of the collection channel has condensed water The interface, the water collecting tray is provided under the cooling fins of the indoor finned tube heat exchanger, and the water collecting tray is connected with the condensation water interface.

In the above-mentioned energy-saving and comfortable split air-conditioning heat pump system, the liquid collection distributor includes several tooth-shaped protrusions, and the protrusions are distributed in sequence to form a zigzag liquid uniform distribution channel, so The liquid uniform distribution channels are respectively formed between two adjacent protrusions, and the fins of the outdoor finned tube heat exchanger are respectively arranged in the liquid uniform distribution channels.

In the above-mentioned energy-saving and comfortable split air-conditioning heat pump system, the fins of the outdoor finned tube heat exchanger are arranged between two adjacent protrusions by welding, and the outdoor finned tubes heat exchange The height of the fins of the device is equal to the height of the raised part. This ensures that the liquid flows evenly along the surface of the fins.

In the above-mentioned energy-saving and comfortable split air-conditioning heat pump system, the outdoor finned tube heat exchanger has several fin groups, and each fin group has several fins arranged at equal intervals in sequence, and the collection channel It is formed between two adjacent fin groups.

Compared with the existing technology, the advantages of this energy-saving and comfortable split air-conditioning heat pump system are:

1. The utility model does not need to add additional power equipment such as water pumps and atomizers. Under the premise of basically not increasing the use and manufacturing costs of the air conditioner, the installation height difference between the indoor and outdoor heat exchangers is used to reduce the indoor finned tube heat exchanger. The condensed water is recycled to the liquid collection distributor installed on the top of the outdoor finned tube heat exchanger, and the recovered condensed water is distributed to the surface of the fins of the outdoor finned tube heat exchanger through the liquid collected distributor, and the condensed water flows along the fins The surface is evaporating while flowing, and the latent heat of evaporation is used to remove part of the heat of the air and the surface of the fins, thereby reducing the condensation temperature of the system and increasing the COP of the air conditioning unit in summer.

2. When the utility model is running in winter, compared with the traditional defrosting method, it can realize defrosting and heating at the same time, and provide continuous and uninterrupted heating to the room, effectively solving the problem of indoor temperature fluctuations caused by defrosting. Greatly improves the thermal comfort of the room.

3. When the utility model is running in the defrosting mode, the heat supply and defrosting heat consumption are controlled separately, which greatly improves the stable, efficient and safe operation of the system.

Description of drawings

Fig. 1 is the structural representation that the utility model provides;

Fig. 2 is a top view of the outdoor finned tube heat exchanger of the present invention;

Fig. 3 is a side view of the outdoor finned tube heat exchanger of the present invention;

Fig. 4 is an A-A sectional view of the outdoor finned tube heat exchanger of the present invention.

In the figure, compressor 1, indoor finned tube heat exchanger 2, electronic expansion valve 3, outdoor finned tube heat exchanger 4, four-way reversing valve 5, gas-liquid separator 6, electric heating wire 7, electric heating Pipe 8, sixth solenoid valve 9, third solenoid valve 10, first solenoid valve 11, second solenoid valve 12, fourth solenoid valve 13, fifth solenoid valve 14, liquid collector distributor 15, raised portion 151, Fins 152 , collecting channel 16 , liquid distribution channel 17 , condensed water interface 18 .

Detailed ways

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

As shown in Figure 1-4, the energy-saving and comfortable split-type air-conditioning heat pump system includes compressor 1, which is connected with four-way reversing valve 5, indoor finned tube heat exchanger 2 and electronic expansion valve in sequence through pipelines 3 connected, the outlet pipeline of the electronic expansion valve 3 is divided into two paths, one path is connected with the first electromagnetic valve 11 and the inlet pipeline of the gas-liquid separator 6 through the pipeline, the other path is connected with the second electromagnetic valve 12 through the pipeline, and the second The outlet pipeline of solenoid valve 12 is divided into two paths, one path is connected with the third solenoid valve 10 and the outlet pipeline of gas-liquid separator 6 through the pipeline, and the other path is connected with the outdoor finned tube heat exchanger 4 and the four-way heat exchanger in turn through the pipeline. It is connected to the valve 5, and is divided into two paths on the outlet pipeline of the four-way reversing valve 5. One path is connected to the fourth electromagnetic valve 13 and the inlet pipeline of the compressor 1 through the pipeline, and the other path is connected to the fifth electromagnetic valve 14 through the pipeline. It is connected with the inlet pipeline of the gas-liquid separator 6, and the outlet pipeline of the gas-liquid separator 6 is connected with the sixth solenoid valve 9 and the inlet pipeline of the compressor 1, and the top of the outdoor finned tube heat exchanger 4 is provided with an indoor finned tube The liquid collecting distributor 15 connected to the heat exchanger 2. This system can fully recycle and utilize the condensed water of the indoor finned tube heat exchanger 2 during summer operation, which not only solves the energy waste caused by the direct discharge of condensed water in the existing split air conditioning system, but also reduces the cost of the outdoor finned tube heat exchanger 4 Condensation temperature, improve system COP.

Further, an electric heating tube 8 is provided at the bottom of the gas-liquid separator 6 here. When the system is running in the defrosting heating mode, the low-temperature and low-pressure gas-liquid two-phase refrigerant that has been throttled by the electronic expansion valve 3 does not enter the outdoor finned tube heat exchanger 4 for heat absorption and evaporation. Different solenoid valves directly enter the gas-liquid separator 6, and use the electric heating tube 8 in the gas-liquid separator 6 to heat and vaporize the liquid refrigerant, wherein the heating power of the electric heating tube 8 is controlled by the indoor load. Wherein, the electric heating wire 7 is arranged on the pipeline connecting the second solenoid valve 12 and the third solenoid valve 10 here. Obviously, an electric heating wire 7 is provided on the branch pipe from the outlet of the gas-liquid separator 6 to the inlet of the outdoor finned tube heat exchanger 4, the main purpose of which is to heat the gas-liquid The saturated refrigerant vapor from the separator 6 provides the required heat for the defrosting of the outdoor finned tube heat exchanger 4 , and the heating power of the electric heating wire is controlled by the superheat degree of the refrigerant at the outlet of the outdoor finned tube heat exchanger 4 . In this way, when running in winter, the system can realize that in the defrosting mode, not only does not need to absorb heat into the room, but also can continuously send hot air into the room, thereby ensuring a comfortable thermal environment in the room.

Further, in order to realize the collection and distribution of condensed water, the liquid collecting distributor 15 here has at least one collecting channel 16, and the collecting channel 16 is respectively connected with several liquid distribution channels 17, and one end of the collecting channel 16 has a condensed water interface 18 , A water collecting pan is provided under the cooling fins of the indoor finned tube heat exchanger 2 , and the water collecting pans are all connected to the condensed water interface 18 . Wherein, the liquid collecting distributor 15 includes a plurality of tooth-shaped protrusions 151, and the protrusions 151 are distributed in sequence to form a zigzag liquid uniform distribution channel 17, and the liquid uniform distribution channel 17 is respectively formed on two adjacent protrusions. Between the rising parts 151 and the fins 152 of the outdoor finned tube heat exchanger 4 are respectively arranged in the liquid distribution channel 17 .

Preferably, the fins 152 of the outdoor finned tube heat exchanger 4 are arranged between two adjacent protrusions 151 by welding, and the height and height of the fins 152 of the outdoor finned tube heat exchanger 4 The heights of the rising parts 151 are equal. This ensures that the liquid flows evenly along the surface of the fins. Preferably, the outdoor finned tube heat exchanger 4 here has several fin groups, and each fin group has several fins 152 arranged at equal intervals in sequence, and the collection channel 16 is formed between two adjacent fin groups between.

In this way, there is no need to add additional power equipment such as water pumps and atomizers. Under the premise of basically not increasing the use and manufacturing costs of the air conditioner, the condensed water of the indoor finned tube heat exchanger 2 is recovered by using the installation height difference between the indoor and outdoor heat exchangers. Into the liquid collection distributor 15 installed on the top of the outdoor finned tube heat exchanger 4, the recovered condensed water is distributed to the surface of the fins of the outdoor finned tube heat exchanger 4 through the liquid collected distributor 15, and the condensed water flows along the fin surface The surface of the fins evaporates while flowing, and the latent heat of evaporation is used to remove part of the heat of the air and the surface of the fins, thereby reducing the condensation temperature of the system and increasing the COP of the air conditioning unit in summer.

The control method for the energy-saving and comfortable split-type air-conditioning heat pump in this embodiment includes the following steps:

A. During summer operation, the system is in cooling mode, open the sixth solenoid valve 9, the second solenoid valve 12, and the fifth solenoid valve 14, close the third solenoid valve 10, the first solenoid valve 11, and the fourth solenoid valve 13; compress The high-temperature and high-pressure refrigerant steam at the outlet of machine 1 enters the outdoor finned tube heat exchanger 4 to condense into a high-temperature and high-pressure liquid, and the high-temperature and high-pressure refrigerant liquid becomes a low-temperature and low-pressure gas-liquid after being throttled by the electronic expansion valve 3 Phase refrigerant, low-temperature and low-pressure gas-liquid two-phase refrigerant enters the indoor finned tube heat exchanger 2 to absorb heat and becomes a low-temperature and low-pressure gaseous refrigerant, and the low-temperature and low-pressure gaseous refrigerant is sucked by the compressor 1 and compressed into a high temperature High-pressure gaseous refrigerant forms a refrigeration cycle;

During the refrigeration cycle, since the temperature of the fins on the surface of the indoor finned tube heat exchanger 2 is lower than the dew point temperature of the indoor air, the water vapor in the indoor air condenses into water and enters the water collecting pan, and passes through the pipe under the action of gravity. Into the liquid collection distributor 15 embedded in the top of the outdoor finned tube heat exchanger 4, the condensed water flows in the collection channel 16 of the liquid collection distributor 15, and passes through the zigzag liquid distribution channels 17 on both sides of the collection channel 16 Distributed to the surface of the fin 152 of the outdoor finned tube heat exchanger 4, the film flow evaporation of the liquid on the surface of the fin 152 is used to fully utilize the low-temperature cooling capacity of the condensed water and the latent heat of vaporization of the liquid evaporation, and improve the COP of the unit in summer operation. Energy saving.

B. During winter operation, the system is in the heating mode, the four-way reversing valve 5 is reversing, and the sixth solenoid valve 9, the second solenoid valve 12, and the fifth solenoid valve 14 are opened at the same time, and the third solenoid valve 10 and the first solenoid valve are closed. Solenoid valve 11, fourth solenoid valve 13; the high-temperature and high-pressure refrigerant vapor at the outlet of the compressor 1 enters the indoor finned tube heat exchanger 2, and condenses into a high-temperature and high-pressure liquid by releasing heat to the room, and the high-temperature and high-pressure refrigerant vapor The liquid becomes a low-temperature and low-pressure gas-liquid two-phase refrigerant after being throttled by the electronic expansion valve 3, and the low-temperature and low-pressure gas-liquid two-phase refrigerant enters the outdoor finned tube heat exchanger 4 to absorb heat and becomes a low-temperature and low-pressure gas-state refrigeration The low-temperature and low-pressure gaseous refrigerant is sucked by the compressor 1 and then compressed into a high-temperature and high-pressure gaseous refrigerant to form a heating cycle.

When the heat pump air conditioner is running in winter, when the surface temperature of the outdoor finned tube heat exchanger 4 is lower than the dew point temperature of the outdoor air and lower than zero, frost will form on the surface of the outdoor finned tube heat exchanger 4. When the thickness of the frost layer reaches After a certain thickness, the unit must be defrosted.

During winter operation, the system is in the defrosting heating mode, the four-way reversing valve 5 does not change direction, and at the same time closes the sixth solenoid valve 9, the second solenoid valve 12, and the fifth solenoid valve 14, and opens the third solenoid valve 10 and the fifth solenoid valve. A solenoid valve 11, a fourth solenoid valve 13, the high-temperature and high-pressure refrigerant vapor at the outlet of the compressor 1 enters the indoor finned tube heat exchanger 2, and condenses into a high-temperature and high-pressure liquid refrigerant by releasing heat to the room. The liquid refrigerant becomes a low-temperature and low-pressure gas-liquid two-phase refrigerant after being throttled by the electronic expansion valve 3, and the low-temperature and low-pressure gas-liquid two-phase refrigerant enters the gas-liquid separator 6 through the first electromagnetic valve 11, and the low-temperature liquid refrigerant After being heated by the electric heating tube 8 in the gas-liquid separator 6, it becomes a saturated gaseous refrigerant. After passing through the third solenoid valve 10, the saturated gaseous refrigerant is heated by the electric heating wire 7 to become a high-temperature gaseous refrigerant, and then enters the outdoor finned tube for exchange. In the heater 4, the high-temperature gaseous refrigerant releases heat and becomes a low-temperature gaseous refrigerant flows out of the outdoor finned tube heat exchanger 4 and then enters the compressor 1, where it is compressed into a high-temperature and high-pressure gaseous refrigerant, forming a cycle until the outdoor finned tube The frost layer on the surface of the heat exchanger 4 is completely removed and the system is switched to the heating mode. In the defrosting heating mode, the electric heating wire 7 controls the heat consumption of defrosting, and the heating electric power of the electric heating wire 7 is adjusted by measuring the superheat degree of the refrigerant at the outlet of the outdoor finned tube heat exchanger 4; the electric heating pipe 8 controls the heat pump The heat supply of the unit is adjusted by adjusting the heating power of the electric heating tube 8 to adjust the circulating refrigerant flow rate of the air-conditioning heat pump system, thereby adjusting the heat supply of the unit.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Although this article uses a lot of compressor 1, indoor finned tube heat exchanger 2, electronic expansion valve 3, outdoor finned tube heat exchanger 4, four-way reversing valve 5, gas-liquid separator 6, electric heating wire 7. Electric heating tube 8, sixth solenoid valve 9, third solenoid valve 10, first solenoid valve 11, second solenoid valve 12, fourth solenoid valve 13, fifth solenoid valve 14, liquid collector distributor 15, convex The riser 151, the fin 152, the collection channel 16, the liquid distribution channel 17, the condensation water interface 18 and other terms, but the possibility of using other terms is not excluded. These terms are only used to describe and explain the essence of the utility model more conveniently; interpreting them as any kind of additional limitation is against the spirit of the utility model.

Claims (7)

1. An energy-saving and comfortable split air-conditioning heat pump system, comprising a compressor (1), characterized in that, the compressor (1) is sequentially connected with the four-way reversing valve (5), the indoor finned tube through the pipeline The heat exchanger (2) is connected to the electronic expansion valve (3), and the outlet pipeline of the electronic expansion valve (3) is divided into two paths, and one path is connected to the first solenoid valve (11) and the gas-liquid separator (6) through the pipeline. ) inlet pipeline is connected, and the other way is connected with the second electromagnetic valve (12) through the pipeline, and the outlet pipeline of the second electromagnetic valve (12) is divided into two ways, and one way is connected with the third electromagnetic valve (10) through the pipeline. ) is connected to the outlet pipeline of the gas-liquid separator (6), and the other pipeline is connected to the outdoor finned tube heat exchanger (4) and the four-way reversing valve (5) sequentially through the pipeline. (5) The outlet pipeline is divided into two paths, one path is connected with the fourth electromagnetic valve (13) and the inlet pipeline of the compressor (1) through the pipeline, and the other path is connected with the fifth electromagnetic valve (14) through the pipeline. It is connected with the inlet pipeline of the gas-liquid separator (6), the outlet pipeline of the gas-liquid separator (6) is connected with the sixth solenoid valve (9) and the inlet pipeline of the compressor (1), and the The top of the outdoor finned tube heat exchanger (4) is provided with a liquid collecting distributor (15) connected with the indoor finned tube heat exchanger (2). 2. The energy-saving and comfortable split air-conditioning heat pump system according to claim 1, characterized in that an electric heating tube (8) is arranged at the bottom of the gas-liquid separator (6). 3. The energy-saving and comfortable split air-conditioning heat pump system according to claim 2, characterized in that an electric heating wire (7 ). 4. The energy-saving and comfortable split air-conditioning heat pump system according to claim 1, 2 or 3, characterized in that, the liquid collection distributor (15) has at least one collection channel (16), and the collection channel (16) communicate with several liquid distribution channels (17) respectively, one end of the collection channel (16) has a condensed water interface (18), and the cooling fins of the indoor finned tube heat exchanger (2) A water collection tray is provided below, and the water collection trays are all connected to the condensation water interface (18). 5. The energy-saving and comfortable split air-conditioning heat pump system according to claim 4, characterized in that, the liquid collecting distributor (15) includes several tooth-shaped protrusions (151), and the protrusions The parts (151) are arranged sequentially to form zigzag liquid distribution channels (17), and the liquid distribution channels (17) are respectively formed between two adjacent raised parts (151), and the The fins (152) of the outdoor finned tube heat exchanger (4) are respectively arranged in the liquid uniform distribution channel (17). 6. The energy-saving and comfortable split-type air-conditioning heat pump system according to claim 5, characterized in that, the fins (152) of the outdoor finned tube heat exchanger (4) are arranged on two adjacent protrusions by welding. between the raised parts (151), and the height of the fins (152) of the outdoor finned tube heat exchanger (4) is equal to the height of the raised parts (151). 7. The energy-saving and comfortable split air-conditioning heat pump system according to claim 5, characterized in that, the outdoor fin-tube heat exchanger (4) has several fin groups, and each fin group has several The fins (152) are arranged at equal intervals, and the collection channel (16) is formed between two adjacent fin groups.