CN102759219B - Energy-saving heat pump hot water air conditioner and working method thereof - Google Patents

Abstract

The invention provides an energy-saving heat pump hot water air conditioner and a working method thereof. The technical scheme of the invention can realize more energy saving, more optimized performance and wider range of used environmental temperature, can fully recycle waste heat generated by the air conditioner, can also utilize the heat pump principle to produce hot water, is energy-saving and environment-friendly, can realize heating and refrigeration at higher temperature and heating and water at lower temperature, and is beneficial to realizing multi-mode and multi-functional control.

Description

Energy-saving heat pump hot water air conditioner and working method thereof

technical field

The invention belongs to the technical field of air conditioning technology, and in particular relates to a heat pump hot water air conditioner capable of recovering waste heat from an air conditioner and having the functions of heating hot water and simultaneously cooling and heating the hot water, and a working method thereof.

Background technique

With the development of technology, human beings demand more and more energy, and the impact of energy consumption on the environment is becoming more and more prominent. People's awareness of energy conservation and emission reduction is constantly improving. Because air conditioners are easy to install, use and manage, have multiple cooling and heating functions, and can be flexibly selected, they have broad market prospects and are adopted by more and more families, offices and businesses. At present, most air conditioners only have the single function of cooling in summer and heating in winter to adjust the indoor air temperature. The heat generated by the air conditioner in the cooling process in summer is discharged into the outdoor atmosphere, causing heat pollution of outdoor air and energy consumption. waste. Air conditioners are only used in summer and winter, and the utilization rate is not high; at the same time, homes and offices with air conditioners need to purchase additional water heaters to solve the problem of domestic hot water, which increases costs, and the energy consumption of electric water heaters and gas water heaters Large and poor security. At present, there are also many air conditioners with hot water heating function, but only when the air conditioner is cooling, the waste heat generated by the air conditioner is used to heat water. Electric heating heats the water; when the air conditioner is heating, although the heat pump heating has the characteristics of high efficiency, it cannot take into account both heating and hot water at the same time. When heating hot water and heating, the waste heat of hot water cannot be used to improve The inlet air temperature of the heat exchanger meets the requirements of low-temperature hot water heating and heating, and there is no ideal technical solution in the prior art to realize simultaneous heating at low temperatures. Therefore, it is necessary to further develop a heat pump hot water air conditioner capable of heating and cooling while the air conditioner produces hot water.

Contents of the invention

The present invention provides an energy-saving heat pump hot water air conditioner and its working method. Its purpose is to achieve more energy saving, more optimized performance, a wider range of ambient temperature for use, fully recover and utilize the waste heat generated by the air conditioner, and use heat pump The principle of hot water heating is energy-saving and environmentally friendly, and it can realize hot water heating and cooling at higher temperatures, and hot water heating and heating at lower temperatures, which is conducive to the realization of multi-mode and multi-functional control.

The present invention is achieved through the following technical means: an energy-saving heat pump hot water air conditioner, including a control system, an air conditioner outdoor unit, a water heater, an air conditioner indoor unit, and connections between the air conditioner outdoor unit, water heater, and air conditioner indoor unit multiple refrigerant pipelines, the air conditioner outdoor unit includes at least one compressor, a condensing heat exchanger, a heat exchanger, an electronic expansion valve, and a refrigerant pipeline control device, and the refrigerant pipeline control device includes a four-way valve; The water heater includes a hot water generator, a water tank, and water pipes 1 and 2 connecting the hot water generator and the water tank; the port 2 of the four-way valve is connected to the high-pressure outlet port of the compressor through the high-pressure refrigerant pipe 2, The hot water generator is arranged between the high-pressure refrigerant pipeline at the high-pressure refrigerant outlet end of the compressor and the condensing heat exchanger, and a heat exchange pipeline is arranged inside the hot water generator, and the high-pressure refrigerant pipeline passes through the refrigerant and the water heater. The connection valve 2 communicates with the inlet of the heat exchange pipeline, and the outlet of the heat exchange pipeline communicates with the refrigerant pipeline 10 at one end of the condensing heat exchanger; the liquid receiver is provided with a first interface, a second interface and a third interface , the first interface is connected to refrigerant pipeline five, the second interface is connected to refrigerant pipeline four, and the third interface is connected to refrigerant pipeline three. The inner cavity of the liquid receiver; one end of the heat exchanger is connected to the electromagnetic valve three through the refrigerant pipeline twelve, and the other end is connected to the parallel pipeline of the electronic expansion valve and the check valve four through the refrigerant pipeline. The four direction valves are connected in parallel on the refrigerant pipeline three, the condensation heat exchanger and the heat exchanger are arranged side by side, and an outdoor fan is installed at one end of the heat exchanger, and the outdoor air passes through the condensation heat exchange first. device, then through the heat exchanger.

The four-way valve includes four-way valve port one, four-way valve port two, four-way valve port three and four-way valve port four, and the four-way valve port one passes through the refrigerant pipeline seven and the electromagnetic valve four, refrigerant pipeline ten 1. The indoor and outdoor unit connection valve 2 is connected to the refrigerant pipeline 2, and is connected to the indoor unit of the air conditioner indoor unit; the port 3 of the four-way valve is connected to the vapor-liquid separator through the refrigerant pipeline 8, and the refrigerant pipeline is connected to the vapor-liquid separator; Port four of the through valve is connected to electromagnetic valve three through refrigerant pipeline nine; one end of the condensing heat exchanger is connected through refrigerant pipeline ten, refrigerant and water heater connection valve one, and the other end is connected to refrigerant pipeline five; the air-conditioning indoor unit includes at least one The indoor units are connected in parallel. One end of the parallel connection is the second refrigerant pipe, and the second refrigerant pipe is provided with a valve 2 connecting the indoor and outdoor units. The other end of the parallel connection is the first refrigerant pipe. Refrigerant pipeline 1 is provided with indoor and outdoor unit connection valve 1; throttle element 2, check valve 2, check valve 3, solenoid valve 2, and one end of solenoid valve 2 are arranged between each set of indoor units and refrigerant pipeline 1 It is connected with refrigerant pipeline 1, and the other end is connected with the parallel pipeline of check valve 2 and check valve 3. The parallel pipes are connected to the indoor unit.

The refrigerant pipeline at the low-pressure suction end of the compressor is connected with a throttling element three, a solenoid valve five and the refrigerant pipeline six, and the refrigerant pipeline six is connected with the refrigerant pipeline four; the refrigerant at the low-pressure suction end of the compressor Throttle element 4, solenoid valve 6, and high-pressure refrigerant pipeline 3 are also connected between the pipeline and high-pressure refrigerant pipeline 2 at the high-pressure outlet end; a throttling element is also connected between the low-pressure suction end of the compressor and the oil separator at the high-pressure outlet end. Component one, solenoid valve one.

The water pipe 1 and the water pipe 2 connecting the water tank and the hot water generator communicate with the hot water generator through the water inlet valve 1 and the water outlet valve 1 respectively; the water outlet valve 2 and the water inlet valve 2 are provided on the water tank; The bottom of the shell of the hot water generator is provided with a drain valve; the top of the shell of the hot water generator is provided with a pressure reducing valve; the inside of the hot water generator is also provided with a water temperature sensor.

The high-pressure end of the compressor is connected with an oil separator, a one-way valve and a high-pressure refrigerant pipeline, and the low-pressure end is connected with a vapor-liquid separator; a high-pressure pressure sensor is arranged on the refrigerant pipeline connected with the high-pressure end of the compressor, A low-pressure pressure sensor is arranged on the refrigerant pipeline connected to the low-pressure end of the compressor.

The compressor includes at least one variable-frequency or variable-capacity compressor, and when multiple compressors are used, the compressors are arranged and connected in parallel.

The working method of the energy-saving heat pump hot water air conditioner of the present invention, the method includes the following operating modes:

①, fast hot water mode;

②. Simultaneous operation mode of heating water and cooling;

③. Simultaneous operation mode of hot water heating and heating;

④. Simultaneous operation mode of high temperature hot water heating and cooling;

⑤. Simultaneous operation mode of low temperature hot water heating and heating.

①. The specific operation of the fast hot water heating mode is as follows:

The four-way valve is energized, the three-way solenoid valve is turned on, and the four-way solenoid valve is closed. The high-temperature and high-pressure gaseous refrigerant is condensed by the superheated water generator, and then condensed through the condensation heat exchanger. The liquid refrigerant flows through the refrigerant pipeline three times to the electronic expansion valve, then enters the heat exchanger to evaporate, passes through the three-way and four-way solenoid valves, and then returns to the compressor for compression to form a cycle; the condensing heat exchangers are arranged side by side on the windward side of the heat exchanger. In the hot water heating mode, the heat exchanger acts as an evaporator, and the outdoor air first passes through the condensing heat exchanger, which increases the temperature of the air flowing through the heat exchanger, and at the same time increases the evaporation temperature and heat exchange effect of the heat exchanger, so that The unit heats hot water quickly and can heat water at a lower ambient temperature.

②. Simultaneous operation mode of hot water heating and cooling The specific operation modes are as follows:

The four-way valve is powered off, the four-way solenoid valve is powered on, and the three-way solenoid valve is closed. The high-temperature and high-pressure gaseous refrigerant is condensed by the superheated water generator, and then condensed through the condensation heat exchanger. The outflowing liquid refrigerant flows through refrigerant pipe 4 to refrigerant pipe 1, enters the air conditioner indoor unit that requires cooling, passes through solenoid valve 2, check valve 3, throttling element 2, enters the indoor unit for evaporative cooling, and then passes through refrigerant pipe 2, Solenoid valve four, four-way valve, and then back to the compressor for compression, forming a cycle.

③. Simultaneous operation mode of hot water heating and heating The specific operating modes are as follows:

The four-way valve is energized, the solenoid valve three and solenoid valve four are powered on, and the high-temperature and high-pressure refrigerant gas passes through the four-way valve, solenoid valve four, and refrigerant pipeline two, and enters the indoor unit of the air conditioner that requires heating, and condenses and dissipates heat in the indoor unit. After that, it passes through check valve 2, solenoid valve 2, refrigerant pipeline 1, and refrigerant pipeline 4 to the liquid receiver. The liquid refrigerant flowing out of the liquid receiver flows through the refrigerant pipeline 3 to the electronic expansion valve, enters the heat exchanger to evaporate, and then passes through the solenoid valve. Three, four-way valve, and then return to the compressor for compression to form a cycle; another high-temperature and high-pressure refrigerant gas discharged from the compressor passes through the high-pressure refrigerant pipeline 1, the refrigerant connects the water heater to the valve 2, flows to the hot water generator to condense, and then undergoes condensation exchange The heater is condensed again, and goes to the liquid receiver through the refrigerant pipeline five, where it is mixed with the refrigerant liquid of the above-mentioned route in the liquid receiver to form a cycle; In the operation mode, the heat exchanger acts as an evaporator, and the outdoor air first passes through the condensing heat exchanger, which increases the temperature of the air flowing through the heat exchanger, and at the same time increases the evaporation temperature and heat exchange effect of the heat exchanger, so that the unit can operate at a higher temperature. Hot water heating and heating operation at low ambient temperature.

④. Simultaneous operation mode of high-temperature hot water heating and cooling The specific operation modes are as follows:

The four-way valve is powered off, the solenoid valve three and solenoid valve four are powered on, the high-temperature and high-pressure gaseous refrigerant is condensed by superheated water generator, and then condensed by the condensation heat exchanger. The liquid refrigerant flows through refrigerant pipeline 4 to refrigerant pipeline 1, enters the air conditioner indoor unit that requires cooling, passes through solenoid valve 2, check valve 3, throttling element 2, enters the indoor unit for evaporative cooling, and then passes through refrigerant pipeline 2, electromagnetic Valve four, four-way valve, and then return to the compressor for compression to form a cycle; another high-temperature and high-pressure refrigerant gas discharged from the compressor passes through the four-way valve and solenoid valve three, condenses in the heat exchanger, passes through the one-way valve four, and passes through the refrigerant pipeline The third is to the liquid receiver, which is mixed with the refrigerant liquid of the above-mentioned road in the liquid receiver to form a cycle; under high temperature environment, the solenoid valve 5 can be energized, the solenoid valve 5 is opened, and the liquid refrigerant is sprayed to the suction end of the compressor to reduce the compression The suction temperature of the machine can meet the needs of high temperature refrigeration.

⑤. Simultaneous operation mode of low-temperature hot water heating and heating The specific operating modes are as follows:

The four-way valve is energized, the solenoid valve three and solenoid valve four are powered on, and the high-temperature and high-pressure refrigerant gas passes through the four-way valve, solenoid valve four, and refrigerant pipeline two, and enters the indoor unit of the air conditioner that requires heating, and condenses and dissipates heat in the indoor unit. After that, it passes through check valve 2, solenoid valve 2 , refrigerant pipeline 1 , and refrigerant pipeline 4 to the liquid receiver. The liquid refrigerant flowing out of the liquid receiver flows through the refrigerant pipeline 3 to the electronic expansion valve, enters the heat exchanger to evaporate, and then passes through the electromagnetic Valve three, four-way valve, and then return to the compressor for compression to form a cycle; the other high-temperature and high-pressure refrigerant gas discharged from the compressor passes through the high-pressure refrigerant pipeline 1, the refrigerant is connected to the water heater valve 2, condenses in the hot water generator, and exchanges heat through condensation Then condense through the refrigerant pipeline 5 to the liquid receiver, and mix with the refrigerant liquid of the above-mentioned road in the liquid receiver to form a cycle; in low temperature environment, you can energize the solenoid valve 6, open the solenoid valve 6, and suck air into the compressor High-temperature gaseous refrigerant is sprayed at the end to increase the suction temperature and pressure of the compressor to meet the needs of low-temperature heating.

In summary, the beneficial effects of the present invention are:

The heat pump hot water air conditioner of the present invention includes a control system, an air conditioner outdoor unit, a water heater, and an air conditioner indoor unit. The hot water generator is arranged between the high-pressure refrigerant outlet end of the compressor and the condensing heat exchanger. The hot water can be guaranteed first; the energy regulation technology of frequency conversion or variable capacity is combined with heat pump hot water and air conditioning technology to realize multi-mode and multi-functional operation, energy saving and environmental protection. The technical effects are described as follows: First, as long as the air conditioner works Hot water can be heated quickly; secondly, hot water can be heated at the same time, and the compression heat can be utilized to the maximum to achieve high efficiency and energy saving, avoiding the frequent use of electric heating by traditional air-conditioning water heaters; thirdly, in the While heating hot water and heating, the condensation heat can be transferred to the heat exchanger through the condensing heat exchanger to increase its evaporation temperature, which is conducive to heating in low temperature environments; Fourth, five operating modes that can achieve high efficiency and energy saving Fifth, in various modes, in order to optimize the system control, the heat exchanger can be used as a condenser or an evaporator; Sixth, hot gas bypass can achieve heating at a lower temperature; Seventh, the suction of the compressor Air spray liquid can realize cooling at higher temperature; eighth, the organic combination of frequency conversion or variable capacity energy regulation technology and heat pump hot water air conditioning technology; ninth, in frequency conversion or variable capacity energy regulation technology and heat pump water heater, Complete heat recovery can be realized, which is more energy-saving and environmentally friendly.

Description of drawings

Fig. 1 is a structural schematic diagram of a heat pump hot water air conditioner of the present invention and a schematic diagram of a rapid hot water heating mode cycle;

Fig. 2 is a schematic diagram of the structure of the heat pump hot water air conditioner of the present invention and a schematic diagram of the circulation of the simultaneous operation mode of heating water and cooling;

Fig. 3 is a structural schematic diagram of the heat pump hot water air conditioner of the present invention and a schematic diagram of the cycle of the simultaneous operation mode of heating water and heating;

Fig. 4 is a structural schematic diagram of the heat pump hot water air conditioner of the present invention and a schematic diagram of the cycle of the simultaneous operation mode of high-temperature hot water heating and cooling;

Fig. 5 is a schematic diagram of the structure of the heat pump hot water air conditioner of the present invention and a schematic diagram of the circulation of the low-temperature hot water heating and heating simultaneous operation mode;

1. Outdoor unit of air conditioner; 2. Water heater; 3. Indoor unit of air conditioner; 4. Refrigerant pipeline; 5. Low pressure sensor; 6. Vapor-liquid separator; 10. Oil separator; 11. High-pressure pressure sensor; 12. One-way valve one; 13. High-pressure refrigerant pipeline; 14. High-pressure refrigerant pipeline one; 15. High-pressure refrigerant pipeline two; 16. Four-way valve; 17. Four One-way valve port one; 18. Four-way valve port two; 19. Four-way valve port three; 20. Four-way valve port four; 21. Refrigerant and water heater connection valve one; 22. Refrigerant and water heater connection valve two; 23. Hot pipe; 24, hot water generator; 25, pressure reducing valve; 26, sewage valve; 27, water outlet valve one; 28, water temperature sensor; 29, water pipe one; 30, water tank; 31, water outlet valve two; 32, inlet Water valve one; 33, water pipe two; 34, water inlet valve two; 35, indoor unit; 36, throttling element two; 37, one-way valve two; 38, one-way valve three; 39, solenoid valve two; 40, Refrigerant pipeline 1; 41. Refrigerant pipeline 2; 42. Indoor and outdoor unit connection valve 1; 43. Indoor and outdoor unit connection valve 2; 44. Electronic expansion valve; 45. Liquid reservoir; 46. Refrigerant pipeline 3; 47. Refrigerant pipeline 4; 48. Refrigerant pipeline 5; 49. Refrigerant pipeline 6; 50. Check valve 4; 51. Condensing heat exchanger; 52. Solenoid valve 3; 53. Solenoid valve 4; 54. Refrigerant pipeline 7; 55. Refrigerant pipeline Eight; 56. Refrigerant pipeline nine; 57. Refrigerant pipeline ten; 58. Refrigerant pipeline eleven; 59. Refrigerant pipeline twelve; 60. Heat exchanger; 61. Outdoor fan; 62. Throttle element three; 63. Electromagnetic Valve five; 64, throttling element four; 65, solenoid valve six; 66, high-pressure refrigerant pipeline three.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the present invention is described in detail.

As shown in Figure 1, the present invention provides an energy-saving heat pump hot water air conditioner, including a control system, an air conditioner outdoor unit 1, a water heater 2, an air conditioner indoor unit 3, and an air conditioner connected to the air conditioner outdoor unit 1, water heater 2, and the air conditioner A plurality of refrigerant pipes between the machines 3; the refrigerant circulates in the refrigerant pipes; the air conditioner outdoor unit includes at least one compressor 9, a condensing heat exchanger 51, a heat exchanger 60, an electronic expansion valve 44, a storage A liquid container 45, and a refrigerant pipeline control device, the refrigerant pipeline control device includes a four-way valve 16; the compressor 9, the condensation heat exchanger 51, the heat exchanger 60, the electronic expansion valve 44, the liquid reservoir 45, and the refrigerant pipeline control device are all connected through refrigerant pipelines; the water heater 2 includes a hot water generator 24, a water tank 30, and a water pipe one 29 and a water pipe two 33 connecting the hot water generator 24 and the water tank 30; The port two 18 of the four-way valve 16 is connected to the high-pressure outlet end of the compressor 9 through the high-pressure refrigerant pipeline two 15, and the hot water generator 24 is arranged at the high-pressure refrigerant outlet end of the compressor 9 and the refrigerant pipeline one 14 is connected with the condensing heat exchanger 51, the hot water generator 24 is provided with a heat exchange pipe 23, the refrigerant pipe 14 communicates with the inlet of the heat exchange pipe 23 through the refrigerant and water heater connection valve 2 22, and the heat exchange pipe 23 The outlet of the condensing heat exchanger 51 communicates with the refrigerant pipeline ten 57 at one end; the liquid reservoir 45 is provided with a first interface, a second interface and a third interface, the first interface is connected to the refrigerant pipeline five 48, and the second The second interface is connected to the refrigerant pipeline four 47, the third interface is connected to the refrigerant pipeline three 46, and the five refrigerant pipelines 48, four refrigerant pipelines 47 and three refrigerant pipelines 46 all extend into the inner cavity of the liquid reservoir 45; One end of the heat exchanger 60 is connected to the electromagnetic valve three 52 through the refrigerant pipeline twelve 59, and the other end is connected to the parallel pipeline of the electronic expansion valve 44 and the check valve four 50 through the refrigerant pipeline. The electronic expansion valve 44, the check valve Four 50 are connected in parallel on the three refrigerant pipelines 46, the condensing heat exchanger 51 and the heat exchanger 60 are arranged side by side, one end of the heat exchanger 60 is provided with an outdoor fan 61, and the outdoor air first passes through the The condensing heat exchanger 51 is passed through the heat exchanger 60.

The four-way valve 16 includes a four-way valve port one 17, a four-way valve port two 18, a four-way valve port three 19 and a four-way valve port four 20, and the four-way valve port one 17 connects with the refrigerant pipeline seven 54 and Solenoid valve 4 53, refrigerant pipeline 11 58, indoor and outdoor unit connection valve 2 43 and refrigerant pipeline 2 41 are connected, and are connected with the indoor unit 35 of the air conditioner indoor unit 3; the four-way valve port 3 19 passes through the refrigerant pipeline Eight 55, the refrigerant pipeline 4 is connected to the vapor-liquid separator 6; the four-way valve port four 20 is connected to the solenoid valve three 52 through the refrigerant pipeline nine 56; one end of the condensing heat exchanger 51 is connected to the refrigerant through the refrigerant pipeline ten 57 It is connected with the water heater connection valve one 21, and the other end is connected with the refrigerant pipeline five 48.

The air-conditioning indoor unit 3 includes at least one set of indoor units 35, the indoor units 35 are connected in parallel, and one end of the parallel connection is a refrigerant pipeline 2 41, and the refrigerant pipeline 2 41 is provided with a valve 2 connecting the indoor and outdoor units. 43. The other end of the parallel connection is the refrigerant pipeline-40, and the refrigerant pipeline-40 is provided with an indoor and outdoor unit connection valve-42; each set of indoor unit 35 and the refrigerant pipeline-40 is provided with a throttling element Two 36, one-way valve two 37, one-way valve three 38 and solenoid valve two 39, one end of solenoid valve two 39 is connected with refrigerant pipeline one 40, and the other end is connected with one-way valve two 37, one-way valve three 38 parallel pipes One-way connection, check valve three 38 and throttling element two 36 are connected in series on the same pipeline, and are connected in parallel with one-way valve two 37, and the pipeline connected in parallel is connected with indoor unit 35.

The refrigerant pipeline 4 at the low-pressure suction end of the compressor is connected with a throttling element three 62, a solenoid valve five 63, and the refrigerant pipeline six 49, and the refrigerant pipeline six 49 is connected with the refrigerant pipeline four 47; Throttle element four 64, electromagnetic valve six 65, high-pressure refrigerant pipeline three 66 are also connected between the refrigerant pipeline 4 at the low-pressure suction end of the compressor 9 and the high-pressure refrigerant pipeline two 15 at the high-pressure outlet end; A throttling element-7 and a solenoid valve-8 are also connected between the oil separators 10 at the high-pressure outlet end.

The water pipe one 29 and the water pipe two 33 connecting the water tank 30 and the hot water generator 24 communicate with the hot water generator 24 through the water inlet valve one 32 and the water outlet valve one 27 respectively; the water tank 30 is provided with the water outlet valve two 31 and water inlet valve two 34; the bottom of the shell of the hot water generator 24 is provided with a drain valve 26; the top of the shell of the hot water generator 24 is provided with a pressure reducing valve 25; A water temperature sensor 28 is provided.

The high-pressure end of the compressor 9 is connected with an oil separator 10, a one-way valve 12 and a high-pressure refrigerant pipeline 13, and the low-pressure end is connected with a gas-liquid separator 6; on the refrigerant pipeline connected with the high-pressure end of the compressor 9 A high-pressure pressure sensor 11 is provided, and a low-pressure pressure sensor 5 is provided on the refrigerant pipeline connected to the low-pressure end of the compressor 9 .

The compressor 9 includes at least one variable-frequency or variable-capacity compressor, and when multiple compressors are used, the compressors 9 are arranged in parallel and connected.

The working method of the energy-saving heat pump hot water air conditioner of the present invention, wherein the method includes the following multiple operating modes:

First: fast hot water mode;

Second: Simultaneous operation mode of heating water and cooling;

Third: Simultaneous operation mode of heating water and heating;

Fourth: Simultaneous operation mode of high temperature hot water heating and cooling;

Fifth: Simultaneous operation mode of low temperature hot water heating and heating.

The present invention is based on one or more compressors with variable frequency or variable capacity, air-conditioning indoor units and water heaters to realize multi-mode high-efficiency operation, and is suitable for various environmental temperature conditions of high temperature, low temperature and normal temperature. The specific multiple operating modes are as follows:

First: fast hot water mode;

As shown in Figure 1: the specific operation of the fast hot water heating mode is as follows: the four-way valve 16 is energized, the solenoid valve 3 52 is powered on, the solenoid valve 4 53 is closed, the high-temperature and high-pressure gaseous refrigerant superheated water generator 24 condenses, and the supercondensed water is exchanged. Heater 51 condenses again, and goes to liquid receiver 45 through refrigerant pipeline five 48, and the liquid refrigerant flowing out from liquid receiver 45 passes through refrigerant pipeline three 46 to electronic expansion valve 44, then enters heat exchanger 60 to evaporate, and passes solenoid valve three 52 , four-way valve 16, then back to the compressor 9 to compress, forming a cycle.

The condensing heat exchangers 51 are arranged side by side on the windward side of the heat exchanger 60. In the hot water operation mode, the heat exchanger 60 acts as an evaporator, and the outdoor air first passes through the condensing heat exchanger 51, which improves the flow rate of the heat exchanger. The air temperature is 60, and the evaporation temperature and heat exchange effect of the heat exchanger 60 are increased at the same time, so that the unit can quickly heat water and can heat water at a lower ambient temperature.

Second: Simultaneous operation mode of heating water and cooling;

As shown in Figure 2, the specific operation mode of the simultaneous operation mode of hot water heating and cooling is as follows: four-way valve 16 is powered off, solenoid valve four 53 is powered on, solenoid valve three 52 is closed, high temperature and high pressure gaseous refrigerant superheated water generator 24 Condensate, then condense through the condensing heat exchanger 51, go through the refrigerant pipeline 5 48 to the liquid receiver 45, and the liquid refrigerant flowing out from the liquid receiver 45 flows through the refrigerant pipeline 4 47 to the refrigerant pipeline 1 40 and enters the air conditioner indoor unit with cooling requirements 3. Through solenoid valve 2 39, one-way valve 3 38, throttling element 2 36, enter the indoor unit 35 for evaporation and refrigeration, then pass through refrigerant pipeline 2 41, solenoid valve 4 53, and 4-way valve 16, and then return to compressor 9 for compression , forming a cycle.

Third: Simultaneous operation mode of heating water and heating;

As shown in Figure 3, the specific operation mode of the simultaneous operation mode of hot water heating and heating is as follows: the four-way valve 16 is energized, the solenoid valve three 52 and the solenoid valve four 53 are energized and opened, and the high-temperature and high-pressure refrigerant gas passes through the four-way valve 16 and the solenoid valve Valve four 53 passes through refrigerant pipeline two 41 and enters the air conditioner indoor unit 3 that requires heating, condenses and dissipates heat in the indoor unit 35, and then passes through check valve two 37, solenoid valve two 39, refrigerant pipeline one 40, and refrigerant pipeline four 47 , to the accumulator 45, the liquid refrigerant flowing out from the accumulator 45 flows through the refrigerant pipeline 3 46, flows through the electronic expansion valve 44, enters the heat exchanger 60 to evaporate, then passes through the solenoid valve 3 52 and the four-way valve 16, and then returns to compression compressor, forming a cycle.

The other high-temperature and high-pressure refrigerant gas discharged from the compressor 9 passes through the high-pressure refrigerant pipeline 14, the refrigerant and the water heater connecting valve 222, flows to the hot water generator 24 to condense, and then condenses through the condensation heat exchanger 51, and passes through the refrigerant pipeline 5 48 To the accumulator 45, in the accumulator 45, it is mixed with the refrigerant liquid of the above-mentioned route to form a circulation.

The condensing heat exchanger 51 is arranged on the windward side of the heat exchanger 60. In the simultaneous operation mode of heating water and heating, the heat exchanger 60 acts as an evaporator, and the outdoor air first passes through the condensing heat exchanger 51, which improves the flow rate. The air temperature of the heat exchanger 60 increases the evaporation temperature and heat exchange effect of the heat exchanger 60 at the same time, so that the unit can heat water and heat at a lower ambient temperature.

Fourth: Simultaneous operation mode of high temperature hot water heating and cooling;

As shown in Figure 4, the simultaneous operation mode of high-temperature hot water heating and cooling is as follows: the four-way valve 16 is powered off, the solenoid valve 3 52 and solenoid valve 4 53 are powered on, and the high-temperature and high-pressure gaseous refrigerant superheated water generator 24 Condensate, then condense through the condensing heat exchanger 51, go to the accumulator 45 through the refrigerant pipeline five 48, and the liquid refrigerant flowing out from the liquid accumulator 45 flows to the refrigerant pipeline one 40 through the refrigerant pipeline four 47 , and enters the air-conditioning room with cooling requirements Machine 3, through solenoid valve 2 39, one-way valve 3 38, throttling element 2 36, enters the indoor unit 35 for evaporation and refrigeration, then passes through refrigerant pipeline 2 41, solenoid valve 4 53, and 4-way valve 16, and then returns to the compressor for compression , forming a cycle.

The other high-temperature and high-pressure refrigerant gas discharged from the compressor 9 passes through the four-way valve 16, the solenoid valve three 52, condenses at the heat exchanger 60, passes through the one-way valve four 50, and passes through the refrigerant pipeline three 46 to the liquid reservoir 45, where it is stored In the device 45, it is mixed with the refrigerant liquid of the above-mentioned route to form a circulation.

In a high temperature environment, the solenoid valve 5 63 can be energized, the solenoid valve 5 63 can be opened, and liquid refrigerant can be sprayed to the suction end of the compressor 9 to reduce the suction temperature of the compressor to meet the demand for high-temperature refrigeration.

Fifth: Simultaneous operation mode of low temperature hot water heating and heating.

As shown in Figure 5: the simultaneous operation mode of low-temperature hot water heating and heating is as follows: the four-way valve 16 is energized, the solenoid valve three 52 and the solenoid valve four 53 are powered on, and the high-temperature and high-pressure refrigerant gas passes through the four-way valve 16, Solenoid valve 4 53 passes through refrigerant pipeline 2 41 and enters the air-conditioning indoor unit 3 that requires heating, condenses and dissipates heat in the indoor unit 35, and then passes through check valve 2 37, solenoid valve 2 39, refrigerant pipeline 1 40 , and passes through the refrigerant pipeline Four 47 to the liquid storage 45, the liquid refrigerant flowing out from the liquid storage 45 flows through the refrigerant pipeline three 46, flows through the electronic expansion valve 44, enters the heat exchanger 60 to evaporate, then passes through the solenoid valve three 52, the four-way valve 16, and then returns The compressor compresses, forming a cycle.

The other high-temperature and high-pressure refrigerant gas discharged from the compressor 9 passes through the high-pressure refrigerant pipeline 14, the refrigerant and the water heater connecting valve 222, condenses in the hot water generator 24, passes through the condensing heat exchanger 51 and then condenses, and flows through the refrigerant pipeline 5 48 to The accumulator 45 is mixed with the refrigerant liquid of the above-mentioned path in the accumulator 45 to form a circulation.

In a low temperature environment, the solenoid valve 665 can be energized to open the solenoid valve 665 to spray high-temperature gaseous refrigerant to the suction end of the compressor to increase the suction temperature of the compressor to meet the demand for low-temperature heating.

The condensing heat exchanger 51 of the present invention acts as a condenser. Since the temperature of the high-temperature and high-pressure gas refrigerant discharged from the compressor 9 is as high as 80°C or higher, when the high-temperature and high-pressure gas refrigerant is condensed by the hot water generator, the hot water generator can The temperature of the water at 24 reaches above 55°C, and the temperature of the high-temperature and high-pressure gas refrigerant after being condensed by the hot water generator 24 is still about 50°C, but it becomes a liquid state. Evaporation of the heat exchanger 60 is not favorable; if the water temperature of the hot water generator 24 has reached above 55°C and no reheating is required, the high temperature and high pressure gas refrigerant cannot be fully condensed in the hot water generator 24 and becomes The gas-liquid mixture is unfavorable for evaporating into the heat exchanger 60; the condensing heat exchanger 51 is configured to condense the high-temperature and high-pressure gas refrigerant into a liquid state regardless of whether the high-temperature and high-pressure gas refrigerant is fully condensed in the hot water generator. If the high-temperature and high-pressure gas refrigerant has been condensed into liquid in the hot water generator, the condensing heat exchanger 51 has just played the role of recondensation, that is, the refrigerant is supercooled, and the refrigerant evaporates and absorbs heat in the heat exchanger 60 after being supercooled. Advantageously, cooling the indoor unit 35 can increase the cooling capacity. The condensing heat exchanger 51 and the heat exchanger 60 are arranged side by side. When heating water and indoor heating are required in winter, since the temperature of the refrigerant flowing through the condensing heat exchanger 51 is about 50°C, the outdoor air first passes through the condensing heat exchanger 51 , will be heated by the refrigerant in the condensing heat exchanger 51, and then pass through the heat exchanger 60 (the heat exchanger 60 is used as an evaporator during heating in winter and needs to absorb heat from the outdoor air). For example: when the external temperature reaches -15°C in winter, the outdoor air may be heated to -5°C or higher after passing through the condensing heat exchanger 51, and then the inlet air temperature is increased when passing through the heat exchanger 60 After the inlet air temperature is increased, the evaporation temperature of the heat exchanger 60 is also increased correspondingly, so that the heating efficiency and energy efficiency ratio of the entire air conditioning unit are improved.

The method of the present invention makes full use of the high-temperature and high-pressure gas refrigerant discharged from the compressor to heat hot water, and then utilizes the remaining heat to increase the evaporation temperature and heat exchange efficiency of the heat exchanger 60, so that the waste heat generated by the air conditioner is utilized to the extreme, and the air conditioner's performance is improved. Efficiency has also been improved to the extreme.

The specific implementation methods listed above are non-limiting. For example, a pure water heating unit may not need the four-way valve, solenoid valve three 52, solenoid valve four 53 and other components of the air-conditioning indoor unit and the air-conditioning outdoor unit, and can also achieve high efficiency. The effect of hot water, and hot water can be made at a lower temperature; therefore, for those skilled in the art, without departing from the scope of the present invention, various improvements and changes carried out belong to the protection scope of the present invention.

Claims (10)

1. an energy-saving heat-pump hot, includes in control system, air-conditioner outdoor unit (1), water heater (2), air conditioning chamber

Machine (3) and be connected in many refrigerant pipes between described air-conditioner outdoor unit (1), water heater (2), indoor apparatus of air conditioner (3), described air-conditioner outdoor unit (1) comprises at least one compressor (9), condensing heat exchanger (51), heat exchanger (60), electric expansion valve (44), reservoir (45), refrigerant pipe control device, and described refrigerant pipe control device includes cross valve (16);

Described water heater (2) includes hot water generator (24), water tank (30) and connects described hot water generator (24) and the water pipe one (29) of described water tank (30) and water pipe two (33);

It is characterized in that: the port two (18) of described cross valve (16) is connected with the high-pressure outlet end of compressor (9) by high pressure refrigerant pipe two (15), described hot water generator (24) is arranged between the high pressure refrigerant port of export refrigerant pipe one (14) and condensing heat exchanger (51) of compressor (9), in described hot water generator (24), be provided with heat exchange pipeline (23), described refrigerant pipe one (14) is connected valve two (22) and is communicated with the import of described heat exchange pipeline (23) with water heater by refrigerant, the outlet of described heat exchange pipeline (23) is communicated with the refrigerant pipe ten (57) of condensing heat exchanger (51) one end,

Described reservoir (45) is provided with first interface, the second interface and the 3rd interface, described first interface connects refrigerant pipe five (48), described the second interface connects refrigerant pipe four (47), described the 3rd interface connects refrigerant pipe three (46), and described refrigerant pipe five (48), refrigerant pipe four (47) and refrigerant pipe three (46) all stretch at described reservoir (45) inner chamber;

One end of described heat exchanger (60) is connected with magnetic valve three (52) by refrigerant pipe ten two (59), the other end is connected with the pipeline of electric expansion valve (44) and check valve four (50) parallel connections by refrigerant pipe, described electric expansion valve (44), check valve four (50) is connected in parallel on described refrigerant pipe three (46), described condensing heat exchanger (51) is arranged side by side with described heat exchanger (60) front and back, be provided with outdoor ventilator (61) in described heat exchanger (60) one end, outdoor air is first by described condensing heat exchanger (51), then by described heat exchanger (60).

2. energy-saving heat-pump hot according to claim 1, it is characterized in that: described cross valve (16) includes cross valve port one (17), cross valve port two (18), cross valve port three (19) and cross valve port four (20), described cross valve port one (17) is connected valve two (43) with magnetic valve four (53), refrigerant pipe ten one (58), indoor and outdoor machine by refrigerant pipe seven (54) and refrigerant pipe two (41) connects, and is connected with the indoor units (35) of described indoor apparatus of air conditioner (3); Described cross valve port three (19) is connected with vapour liquid separator (6) by refrigerant pipe eight (55), refrigerant pipe (4); Described cross valve port four (20) is connected with magnetic valve three (52) by refrigerant pipe nine (56);

Described condensing heat exchanger (51) one end is connected valve one (21) by refrigerant pipe ten (57) and connects with water heater with refrigerant, the other end connects refrigerant pipe five (48).

3. energy-saving heat-pump hot according to claim 1 and 2, it is characterized in that: described indoor apparatus of air conditioner (3) includes at least a set of indoor units (35), described indoor units (35) adopts mode in parallel, one end in parallel is refrigerant pipe two (41), described refrigerant pipe two (41) is provided with indoor and outdoor machine and connects valve two (43), the other end in parallel is described refrigerant pipe one (40), and described refrigerant pipe one (40) is provided with indoor and outdoor machine and connects valve one (42); Between every suit indoor units (35) and refrigerant pipe one (40), be equipped with restricting element two (36), check valve two (37), check valve three (38) and magnetic valve two (39), one end of magnetic valve two (39) is connected with refrigerant pipe one (40), the other end is connected with the parallel pipeline of check valve two (37), check valve three (38), check valve three (38) is connected on same pipeline with restricting element two (36), and in parallel with check valve two (37), the pipeline after its parallel connection is connected with indoor units (35).

4. energy-saving heat-pump hot according to claim 3, it is characterized in that: the refrigerant pipe (4) of described compressor low pressure air suction end is connected with restricting element three (62), magnetic valve five (63) and refrigerant pipe six (49), on described refrigerant pipe six (49), be connected with described refrigerant pipe four (47); Between the refrigerant pipe (4) of described compressor (9) low pressure air suction end and the high pressure refrigerant pipe two (15) of high-pressure outlet end, be also connected with restricting element four (64), magnetic valve six (65), high pressure refrigerant pipe three (66); Between the oil eliminator (10) of described compressor (9) low pressure air suction end and high-pressure outlet end, be also connected with restricting element one (7), magnetic valve one (8).

5. energy-saving heat-pump hot according to claim 4, it is characterized in that: water pipe one (29), the water pipe two (33) of described connection water tank (30) and hot water generator (24), be communicated with hot water generator (24) by water intaking valve one (32), outlet valve one (27) respectively; Described water tank (30) is provided with outlet valve two (31) and water intaking valve two (34); The outer casing bottom of described hot water generator (24) is provided with blowoff valve (26); The cover top portion of described hot water generator (24) is provided with pressure-reducing valve (25); In described hot water generator (24), be also provided with cooling-water temperature sensor (28).

6. energy-saving heat-pump hot according to claim 5, it is characterized in that: the high-pressure side of described compressor (9) is connected with oil eliminator (10), check valve one (12) and high pressure refrigerant pipe (13), and low-pressure end is connected with vapour liquid separator (6); On the refrigerant pipe connecting at the high-pressure side of described compressor (9), be provided with high-pressure sensor (11), on the refrigerant pipe connecting at the low-pressure end of described compressor (9), be provided with low-pressure sensor (5); Described compressor (9) comprises at least one frequency conversion or variable conpacitance compressor, while adopting multiple compressors, compressor (9) is arranged in parallel to connection.

7. a method of work for energy-saving heat-pump hot as claimed in claim 1, is characterized in that: described method comprises following operational mode:

1., quick water heating pattern;

2., water heating and refrigeration operational mode simultaneously;

3., water heating and heat simultaneously operational mode;

4., high temperature water heating and refrigeration operational mode simultaneously;

5., low-temperature heating water and heat simultaneously operational mode.

8. the method for work of energy-saving heat-pump hot according to claim 7, is characterized in that,

1., the concrete operation of water heating pattern is as follows fast: cross valve (16) energising, that magnetic valve three (52) must be established by cable is logical, magnetic valve four (53) cuts out, HTHP gaseous coolant superheated water generator (24) condensation, cross condensing heat exchanger (51) condensation again, arrive reservoir (45) through refrigerant pipe five (48), the liquid refrigerants flowing out from reservoir (45) enters heat exchanger (60) evaporation after refrigerant pipe three (46) flow to electric expansion valve (44), cross magnetic valve three (52), cross valve (16), return afterwards compressor (9) compression, form circulation;

2., the concrete operational mode of operational mode is as follows simultaneously: cross valve (16) power-off with refrigeration for water heating, magnetic valve four (53) must be established by cable logical, magnetic valve three (52) cuts out, HTHP gaseous coolant superheated water generator (24) condensation, through condensing heat exchanger (51) condensation again, arrive reservoir (45) through refrigerant pipe five (48), the liquid refrigerants flowing out from reservoir (45) flow to refrigerant pipe one (40) through refrigerant pipe four (47) and enters the indoor apparatus of air conditioner (3) that refrigeration requires, by magnetic valve two (39), check valve three (38), restricting element two (36), enter indoor units (35) sweat cooling, then cross refrigerant pipe two (41), magnetic valve four (53), cross valve (16), return afterwards compressor (9) compression, form circulation.

9. the method for work of energy-saving heat-pump hot according to claim 7, is characterized in that,

3., water heating with heat that simultaneously the concrete operational mode of operational mode is as follows: cross valve (16) energising, magnetic valve three (52), magnetic valve four (53) must be established by cable logical, compressor is discharged Yi road HTHP cold media gas and is crossed cross valve (16), magnetic valve four (53), cross refrigerant pipe two (41), enter the indoor apparatus of air conditioner (3) that heats requirement, dispel the heat in indoor units (35) condensation, afterwards by check valve two (37), magnetic valve two (39), refrigerant pipe one (40), refrigerant pipe four (47) is to reservoir (45), the liquid refrigerants flowing out from reservoir (45) flow to electric expansion valve (44) through refrigerant pipe three (46), enter heat exchanger (60) evaporation, then cross magnetic valve three (52), cross valve (16), return afterwards compressor (9) compression, form circulation, another road HTHP cold media gas that compressor is discharged is crossed high pressure refrigerant pipe one (14), refrigerant and is connected valve two (22) with water heater, flow to hot water generator (24) condensation, then passes through condensing heat exchanger (51) condensation again, warprefrigerant pipe five (48), to reservoir (45), mixes with the refrigerant liquid on an above-mentioned road in reservoir (45), forms circulation ,

4., the concrete operational mode of operational mode is as follows simultaneously: cross valve (16) power-off with refrigeration for high temperature water heating, magnetic valve three (52), magnetic valve four (53) must be established by cable logical, compressor is discharged Yi road HTHP gaseous coolant superheated water generator (24) condensation, cross condensing heat exchanger (51) condensation again, by refrigerant pipe five (48) to reservoir (45), the liquid refrigerants flowing out from reservoir (45) flow to refrigerant pipe one (40) through refrigerant pipe four (47), enter the indoor apparatus of air conditioner (3) that refrigeration requires, by magnetic valve two (39), check valve three (38), restricting element two (36), enter indoor units (35) sweat cooling, then cross refrigerant pipe two (41), magnetic valve four (53), cross valve (16), return afterwards compressor (9) compression, form circulation, another road HTHP cold media gas that compressor (9) is discharged is crossed cross valve (16), magnetic valve three (52), to heat exchanger (60) condensation, crosses check valve four (50), warprefrigerant pipe three (46), to reservoir (45), mixes with the refrigerant liquid on an above-mentioned road in reservoir (45), forms circulation.

10. the method for work of energy-saving heat-pump hot according to claim 7, is characterized in that,

5., low-temperature heating water with heat that simultaneously the concrete operational mode of operational mode is as follows: cross valve (16) energising, magnetic valve three (52), magnetic valve four (53) must be established by cable logical, compressor is discharged Yi road HTHP cold media gas and is crossed cross valve (16), magnetic valve four (53), cross refrigerant pipe two (41), enter the indoor apparatus of air conditioner (3) that heats requirement, dispel the heat in indoor units (35) condensation, afterwards by check valve two (37), magnetic valve two (39), refrigerant pipe one (40), refrigerant pipe four (47), to reservoir (45), the liquid refrigerants flowing out from reservoir (45) flow to electric expansion valve (44) through refrigerant pipe three (46), enter heat exchanger (60) evaporation, then cross magnetic valve three (52), cross valve (16), return afterwards compressor compresses, form circulation, another road HTHP cold media gas that compressor is discharged is crossed high pressure refrigerant pipe one (14), refrigerant and is connected valve two (22) with water heater, in hot water generator (24) condensation, crosses condensing heat exchanger (51) condensation again, warprefrigerant pipe five (48), to reservoir (45), mixes with the refrigerant liquid on an above-mentioned road in reservoir (45), forms circulation.

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