WO2009097819A1

WO2009097819A1 - A hot water air conditioner and the control method thereof

Info

Publication number: WO2009097819A1
Application number: PCT/CN2009/070343
Authority: WO
Inventors: Zhengyi Feng
Original assignee: Zhengyi Feng
Priority date: 2008-02-04
Filing date: 2009-02-03
Publication date: 2009-08-13
Also published as: CN101225990B; CN101225990A

Abstract

A hot water air conditioner includes: an indoor heat exchange unit and an outdoor heat exchange unit (2, 3), a water condenser (1), and a compressor (5). An electromagnetic valve (15) is provided between the water condenser (1) and the high pressure outlet pipe of the compressor (5), or a hot water change-over valve (6) is provided between the high pressure outlet pipe of the compressor (5) and the water condenser (1), or an electronic expansion valve (14) is provided between the indoor heat exchange unit and the outdoor heat exchange unit (2, 3). A control method of the hot water air conditioner includes: adjusting the refrigerant amount inthe indoor heat exchange unit and the outdoor heat exchange unit (2, 3) as well as in the water condenser (1), changing the operating state of the hot water air conditioner.

Description

Hot water air conditioner and control method

The invention relates to a hot water air conditioner, in particular to a hot water air conditioner control method.

Background technique

At present, air conditioners discharge heat generated by indoor refrigeration to the outside, resulting in double waste of energy expenditure. Although there are a variety of hot water air conditioner patent applications similar to the present invention, such as patent number: 200510046533. 4, 200520091547. 3, in practical application feels: when the water in the water tank has not been heated, the refrigerant in the entire system will be concentrated In the water condenser, the cooling and heating efficiency is low. If the water in the water tank is not used after heating and the cooling air needs to be continued, the refrigerant in the whole system is concentrated in the heat exchanger unit inside and outside the air conditioner. When working with wind or single heating air, there will be too much refrigerant in the internal and external heat exchanger units, the working efficiency will be greatly reduced, and even the liquid hammer will be reflected, and the compressor will be damaged. If the refrigerant charge of the whole system is reduced, the heat will be reduced. When the water air conditioner is working in the hot water level of the cooling/hot water or heat pump, there will be a shortage of refrigerant, and the compressor lacks oil to reduce the life.

Summary of the invention

The object of the present invention is to overcome the deficiencies of the prior art and provide a hot water air conditioner and a control method thereof, so that the hot water air conditioner is in a single cooling air, a single heating air, a cooling hot water, and a heat pump hot water working mode. It can work with high quality and efficiency, and has simple structure, convenient operation, energy saving and energy saving.

The object of the invention is achieved in this way:

Hot water air conditioner, which comprises water condenser, internal heat exchanger unit, external heat exchanger unit, throttling unit, compressor, hot water switching valve, refrigeration check valve, heating and cooling reversing valve, control system , heating check valve, refrigeration capillary, heating capillary and connecting pipeline, characterized in: the outlet of the compressor is connected to the inlet of the hot water switching valve, the a port of the hot water switching valve is connected to the inlet of the water condenser, and the water is condensed The outlet of the device is connected to the inlet of the throttle member, the port b of the hot water switching valve is connected to the inlet of the heating and cooling reversing valve, the port d of the heating and cooling reversing valve is connected to the compressor return port, and the c port of the heating and cooling reversing valve is connected to the inner heat exchanger unit. The f port, the e port of the heating and cooling reversing valve is connected to the h port of the outer heat exchanger unit, and the i port of the outer heat exchanger unit is connected with the cooling capillary and the heating check valve outlet, and the g port of the inner heat exchanger unit It is connected with the heating capillary and the outlet of the refrigeration check valve. The other end of the cooling capillary and the other end of the heating capillary are connected with the inlet of the refrigeration check valve, the inlet of the heating check valve, and the outlet of the throttle unit. Pick up.

A hot water air conditioner comprising a water condenser, an internal heat exchanger unit, an external heat exchanger unit, a throttle unit, a compressor, a hot water switching valve, a heating and cooling directional control valve, a control system, an electronic expansion valve, and The connecting pipeline is characterized in that: the outlet of the compressor is connected to the inlet of the hot water switching valve, the port a of the hot water switching valve is connected to the inlet of the water condenser, and the port b of the hot water switching valve is connected to the inlet of the cold and warming regulating valve, heating and cooling The d port of the reversing valve is connected to the compressor return port, the e port of the heating and cooling reversing valve is connected to the h port of the outer heat exchanger unit, the i port of the outer heat exchanger unit is connected to the end of the throttle unit, and the c port of the heating and cooling reversing valve The f ports of the plurality of inner heat exchanger units are connected, and the g ports of the respective inner heat exchanger units are respectively connected to one end of the electronic expansion valve, and the other end of each electronic expansion valve is connected with the water condenser outlet and the other end of the throttle member.

A hot water air conditioner, which comprises a water condenser, an internal heat exchanger unit, an external heat unit, a throttling component, and a pressure Shrinking machine, hot water switching valve, refrigeration check valve, heating and cooling reversing valve, control system, heating check valve, refrigeration capillary, heating capillary, throttling capillary and connecting pipe, characterized by: compressor outlet Connect the inlet of the hot water switching valve, the a port of the hot water switching valve is connected to the inlet of the water condenser, the k port of the hot water switching valve is connected with the throttle capillary, the port b of the hot water switching valve is connected with the inlet and outlet of the heating and cooling valve The other port of the throttle capillary is connected in common, the outlet of the water condenser is connected to the inlet of the throttle member, the port d of the heating and cooling reversing valve is connected to the compressor return port, and the port c of the heating and cooling reversing valve is connected to the f port of the heat exchanger unit. The e port of the heating and cooling reversing valve is connected to the h port of the outer heat exchanger unit, and the i port of the outer heat exchanger unit is connected with the cooling capillary and the heating check valve outlet, and the g port and the heating capillary of the inner heat exchanger unit are connected. The outlet of the refrigeration check valve is connected in common, and the other end of the refrigeration capillary and the other end of the heating capillary are connected with the inlet of the heating check valve, the inlet of the refrigeration check valve, and the outlet of the throttle member.

A hot water air conditioner comprising a water condenser, an internal heat exchanger unit, an external heat exchanger unit, a throttling unit, a compressor, a hot water switching valve, a heating and cooling reversing valve, a control system, a solenoid valve and a connection The pipeline is characterized in that: the outlet of the compressor is connected to the inlet of the hot water switching valve, the port a of the hot water switching valve is connected to the inlet of the water condenser, the port b of the hot water switching valve is connected with the inlet and the solenoid valve of the heating and cooling valve The n port is connected in common, the m port of the solenoid valve is connected to the outlet of the water condenser, the d port of the heating and cooling reversing valve is connected to the compressor return port, and the c port of the heating and cooling reversing valve is connected to the f port of the heat exchanger unit, and the heating and cooling is changed. The port of the valve is connected to the port of the outer heat exchanger unit, the port of the outer heat exchanger unit is connected to the throttle unit, and the port j of the throttle unit is connected to the port g of the heat exchanger unit.

Hot water air conditioner, which comprises water condenser, internal heat exchanger unit, external heat exchanger unit, thermal expansion valve, compressor, hot water switching valve, refrigeration check valve, heating and cooling reversing valve, control system , heating check valve, refrigeration capillary, heating capillary, outer balance tube, temperature sensor, and connecting pipeline, characterized by: compressor outlet connected to hot water switching valve 6 inlet, hot water switching valve a port connection Water condenser inlet, water condenser outlet connected to thermal expansion valve inlet, b port of hot water switching valve is connected to the inlet of the heating and cooling reversing valve, d port of the heating and cooling reversing valve is connected to the return port of the compressor, and the reversing valve of the heating and cooling valve The port is connected to the f port of the heat exchanger unit, and the e port of the heating and cooling reversing valve is connected to the h port of the outer heat exchanger unit, and the i port of the outer heat exchanger unit is connected with the cooling capillary and the outlet of the heating check valve. The heat exchanger (g) port is connected with the heating capillary, the cooling single valve outlet, the other end of the refrigeration capillary, the other end of the heating capillary and the inlet of the refrigeration check valve, the inlet of the heating check valve, and the heat Expansion valve connected to a common outlet, the thermal expansion valve bulb tied back air line of the compressor, the thermal expansion valve of the outer tube is connected to the balanced air return port of the compressor.

A hot water air conditioner comprising a water condenser, an internal heat exchanger unit, an external heat exchanger unit, a throttle unit, a compressor, a hot water switching valve, a heating and cooling reversing valve, a control system, a first solenoid valve The second electromagnetic valve and the connecting pipeline are characterized in that: the compressor outlet is connected to the inlet of the hot water switching valve, the a port of the hot water switching valve is connected to the inlet of the water condenser, and the b port of the hot water switching valve is connected to the heating and cooling commutation The inlet of the valve, the d port of the heating and cooling reversing valve is connected to the return port of the compressor, the c port of the heating and cooling reversing valve is connected to the f port of the inner heat exchanger unit, and the e port of the heating and cooling reversing valve is connected to the outer heat exchanger unit. The port, the i port of the outer heat exchanger unit is connected with the throttle member and one end of the second solenoid valve, and the g port of the inner heat exchanger unit is connected with the other end of the throttle member and one end of the first solenoid valve, water The condenser outlet is commonly connected to the other ends of the first solenoid valve and the second solenoid valve.

A hot water air conditioner, which comprises a water condenser, an internal heat exchanger unit, an external heat exchanger unit, a throttling component 4, 4', compressor, hot water switching valve, and connecting pipeline, characterized in that: the compressor outlet is connected to the hot water switching valve inlet, the a port of the hot water switching valve is connected to the water condenser inlet, and the water condenser outlet is connected to the throttle The inlet of the component 4, the b port of the hot water switching valve is connected to the inlet of the outer heat exchanger unit, the outlet of the outer heat exchanger unit is connected to the inlet of the throttle unit 4', the other port of the throttle unit 4 is connected to the other port of the throttle unit 4' After connecting to the inlet of the internal heat exchanger unit, the outlet of the internal heat exchanger unit is connected to the compressor return port.

Hot water air conditioner, which comprises water condenser, internal heat exchanger unit, external heat exchanger unit, three-terminal thermal expansion valve, compressor, hot water switching valve, heating and cooling reversing valve, control system, The balance tube, the temperature sensing package, and the connecting pipeline are characterized in that: the outlet of the compressor is connected to the inlet of the hot water switching valve, the a port of the hot water switching valve is connected to the inlet of the water condenser, and the port b of the hot water switching valve is The inlet of the cooling and heating reversing valve is connected, the outlet of the water condenser is connected to the middle inlet of the three-terminal thermal expansion valve, the d port of the heating and cooling reversing valve is connected to the compressor return port, and the c port of the heating and cooling reversing valve is connected to the inner heat exchanger unit. f port, the e port of the heating and cooling reversing valve is connected to the h port of the outer heat exchanger unit, the i port of the outer heat exchanger unit is connected to the right port of the three-terminal thermal expansion valve, and the g port of the inner heat exchanger unit is connected three The left side port of the end type thermal expansion valve, the temperature sensing bag of the three-terminal type thermal expansion valve is bundled on the return line of the compressor, and the outer balance tube of the three-end type thermal expansion valve is connected to the return port of the compressor.

Hot water air conditioner, which comprises water condenser, internal heat exchanger unit, external heat exchanger unit, throttle unit, compressor, hot water switching valve, solenoid valve, heating and cooling valve, control system, electronic The expansion valve and the connecting pipeline are characterized in that: the compressor outlet is connected to the hot water switching valve inlet, the a port of the hot water switching valve is connected to the water condenser inlet, the water condenser outlet is connected to the inlet of the electromagnetic valve, and the hot water switching valve is b. The port is connected to the inlet of the heating and cooling reversing valve, and the d port of the heating and cooling reversing valve is connected with the k port of the hot water switching valve and the return port of the compressor, and the c port of the heating and cooling reversing valve is connected to the f port of the inner heat exchanger unit, The e port of the heating and cooling reversing valve is connected to the h port of the outer heat exchanger unit, the i port of the outer heat exchanger unit is connected to the throttling part, the g port of the inner heat exchanger unit is connected to one end of the electronic expansion valve, and the outlet of the water condenser is connected to the electromagnetic One end of the valve, the other end of the throttle member, and the other end of the electronic expansion valve are connected to the other end of the solenoid valve.

A control method for hot water air conditioner, characterized in that: adjusting the configuration of the refrigerant in the water condenser and the inner and outer heat exchanger units according to the working mode to adapt to the working state of the hot water air conditioner:

When the hot water air conditioner operates in a single cooling air or a single heating air mode, when the refrigerant in the inner and outer heat exchanger units fails to reach the prescribed condensation evaporation value, the control system extracts the refrigerant in the water condenser. Into the internal and external heat exchanger units; when the hot water air conditioner works in the cooling and hot water mode, the refrigerant in the water condenser and the internal heat exchanger unit does not reach the specified condensation evaporation value, the control system will be outside The refrigerant in the heat exchanger unit is pumped out into the water condenser and the internal heat exchanger unit;

When the hot water air conditioner operates in the heat pump hot water mode, and the refrigerant in the water condenser and the outer heat exchanger unit does not reach the prescribed condensation evaporation value, the control system pumps the refrigerant in the heat exchanger unit into the heat exchanger. Go to the water condenser and the external heat exchanger unit.

The pumping and discharging of the refrigerant is realized by a capillary tube, a check valve or a hot water switching valve and a solenoid valve which are arranged on the connecting pipe between the water condenser and the inner and outer heat exchanger units.

When the hot water air conditioner operates in a single cooling air or a single heating air mode, the refrigerant in the inner and outer heat exchanger units exceeds the gauge When the condensing evaporation value is set, the control system discharges the excess refrigerant in the inner and outer heat exchanger units into the water condenser through the capillary tube, the check valve or the hot water switching valve and the solenoid valve on the connecting line.

The beneficial effects of the invention are: when the hot water air conditioner works in the cooling and hot water mode, it is mainly completed by the inner heat exchanger unit and the water condenser, and when the heat pump hot water mode works, mainly by the outer heat exchanger unit and the water condenser When the single cooling air or single heating air mode is completed, it is mainly completed by the internal heat exchanger unit and the external heat exchanger unit. The control system always configures the refrigerant in the above system to the optimal demand to ensure the hot water air conditioning. The machine always works at maximum efficiency.

When the hot water air conditioner adopts one to two, or one-to-multiple structure, whether it is single machine work, two-machine work, three-machine work can greatly improve the energy efficiency ratio on the basis of ordinary one-to-three air conditioner.

The invention is applied to the large air conditioning unit and the water source heat pump unit, not only increases the hot water function, but also can adjust the refrigerant demand in the internal and external heat exchanger units under various working conditions, and the energy saving effect is remarkable. Longer life, easy to promote and apply in large-scale production.

DRAWINGS

1 is a schematic structural view of Embodiment 1 of the present invention;

2 is a schematic structural view of Embodiment 2 of the present invention;

3 is a schematic structural view of Embodiment 3 of the present invention;

4 is a schematic structural view of Embodiment 4 of the present invention;

Figure 5 is a schematic structural view of Embodiment 5 of the present invention;

Figure 6 is a schematic structural view of Embodiment 6 of the present invention;

Figure 7 is a schematic structural view of Embodiment 7 of the present invention;

Figure 8 is a schematic structural view of Embodiment 8 of the present invention;

Figure 9 is a schematic structural view of Embodiment 9 of the present invention;

Figure 10 is a schematic circuit diagram of the control system of the present invention, symbol 9 in the above embodiment;

Figure 11 is a flow chart of the operation of the single refrigeration air of the control system of the present invention;

12 is a flow chart of a single heating air operation of the control system of the present invention;

Figure 13 is a flow chart of the operation of the control system of the present invention;

Figure 14 is a flow chart of the heat pump hot water operation of the control system of the present invention;

In the figure: water condenser 1, internal heat exchanger unit 2, external heat exchanger unit 3, throttling unit 4, 4', compressor 5, hot water switching valve 6, refrigeration check valve 7, cooling and heating reversing valve 8, control system 9, heating check valve 10, refrigeration capillary 11, heating capillary 12, throttle capillary 13, electronic expansion valve 14, first solenoid valve 15, second solenoid valve 16, outer balance tube 17, sense The temperature pack 18, the thermal expansion valve 19, the three-terminal thermal expansion valve 20, and the connecting pipe are composed. detailed description

Example 1

As shown in Figure 1, it includes a water condenser 1, an internal heat exchanger unit 2, an external heat exchanger unit 3, a throttling unit 4, a compressor 5, a hot water switching valve 6, a refrigeration check valve 7, and a cooling and heating system. a reversing valve 8, a control system 9, a heating check valve 10, a refrigerating capillary 11, a heating capillary 12, and a connecting line. In the hot water air conditioning unit, the outlet of the compressor 5 is connected to the inlet of the hot water switching valve 6, The a port of the hot water switching valve 6 is connected to the inlet of the water condenser 1, the outlet of the water condenser 1 is connected to the inlet of the throttle member 4, and the port b of the hot water switching valve 6 is connected to the inlet of the heating and cooling reversing valve 8, the cooling and heating reversing valve 8 d The port is connected to the compressor 5 return port, the c port of the heating and cooling reversing valve 8 is connected to the f port of the inner heat exchanger unit 2, and the e port of the heating and cooling reversing valve 8 is connected to the h port of the outer heat exchanger unit 3, the outer heat exchanger The i port of the unit 3 is connected to the outlet of the refrigeration capillary 11 and the heating check valve 10, and the g port of the internal heat exchanger unit 2 is connected to the outlet of the heating capillary 12 and the refrigeration check valve 7, and the other end of the refrigeration capillary 11 is The other end of the heating capillary tube 12 is connected to the inlet of the refrigeration check valve 7, the inlet of the heating check valve 10, and the outlet of the throttle member 4, and the throttle member 4 uses a capillary tube, an electronic expansion valve, or a thermal expansion valve, and a thermal expansion valve. The temperature sensing package is bundled on the return line of the compressor 5.

The control system 9 of the present invention applies the mature circuit and technology of the existing embedded single chip microcomputer, and the circuit diagram shown in Fig. 10 is controlled according to the flow modes of Fig. 11, Fig. 12, Fig. 13, and Fig. 14.

When the hot water air conditioner operates in a single cooling air mode according to the flow of FIG. 11, the control system 9 connects the inlet of the hot water switching valve 6 to the port b, and the inlet and outlet of the cooling and heating switching valve 8 are connected to the e port, and the output of the compressor 5 is output. The high-pressure gas refrigerant enters the outer heat exchanger unit 3 to condense and release heat, and through the refrigeration capillary 11, the refrigeration check valve 7 enters the inner heat exchanger unit 2 to evaporate and cool, and passes through the cold-heating and reversing valve 8 (;, d port back To the compressor 5, normally, during cooling operation, the refrigerant evaporation temperature in the internal heat exchanger unit 2 is about 5-8 ° C, and the temperature in the summer water condenser is higher than 15 ° C, if the throttle unit 4 When the capillary is used, most of the refrigerant in the water condenser 1 is automatically extracted and transferred into the inner and outer heat exchanger units 2, 3. If the throttle unit 4 uses an electronic expansion valve, the demand for extraction can also be controlled. The refrigerant in the inner and outer heat exchanger units 2, 3 is optimally configured to achieve the highest working efficiency of the single cooling air.

When the hot water air conditioner operates in a single heating mode according to the flow of Fig. 12, the control system 9 turns on the inlet b of the hot water switching valve 6, and the inlet c of the cold and warm switching valve 8 is turned on, and the output of the compressor 5 is turned on. The high-pressure gas refrigerant enters the inner heat exchanger unit 2 to condense and release heat, and through the heating capillary 12, the heating check valve 10 enters the outer heat exchanger unit 3 to evaporate and absorb the outdoor heat, and passes through the cold-heating and reversing valve 8 The d port is returned to the compressor 5, and if the refrigerant in the inner and outer heat exchanger units 2, 3 does not reach the prescribed condensing evaporation pressure temperature value, the control system passes the refrigerant in the water condenser 1 through the throttling unit 4. The pumping is transferred to the inner and outer heat exchanger units 2, 3 to achieve the optimum amount of refrigerant in the inner and outer heat exchanger units 2, 3.

When the hot water air conditioner operates in the cooling hot water mode according to the flow of FIG. 13, the control system 9 causes the hot water switching valve 6 inlet to be connected to the a port, and the 0 and d ports of the cold and warm switching valve 8 are connected, the compressor 5 The output high-pressure gas refrigerant enters the water condenser 1 to condense and release heat, the liquid refrigerant passes through the throttling unit 4, the refrigeration check valve 7 enters the internal heat exchanger unit 2 to evaporate and cool, and passes through the cooling and heating reversing valve 8 c, The d port is returned to the compressor 5, and the refrigerant in the outer heat exchanger unit 3 is taken out to the inner heat exchanger unit 2 and the water condenser 1 through the cooling capillary 11, so that the inner heat exchanger unit 2 and the water are condensed. The refrigerant in the device 1 reaches the optimum configuration amount.

When the hot water air conditioner operates in the heat pump hot water mode according to the flow of FIG. 14, the control system 9 turns on the inlet a of the hot water switching valve 6, and the d and e ports of the warm and cold switching valve 8 are connected, and the compressor 5 The output high-pressure gas refrigerant enters the water condenser 1 to condense and release heat, and through the throttling member 4, the heating check valve 10 enters the outer heat exchanger unit 3 to evaporate and absorb the outdoor heat, and passes through the cooling and heating reversing valve 8 The d port returns to the compressor 5, and the refrigerant in the inner heat exchanger unit 2 is pumped out into the outer heat exchanger unit 3 through the heating capillary 12, so that the cooling in the water condenser 1 and the outer heat exchanger unit 3 The agent is optimally configured.

Example 2

As shown in Figure 2, it includes a water condenser 1, an internal heat exchanger unit 2, an external heat exchanger unit 3, a throttling unit 4, the compressor 5, the hot water switching valve 6, the heating and cooling reversing valve 8, the control system 9, the electronic expansion valve 14 and the connecting line, in the hot water air conditioning unit, the outlet of the compressor 5 is connected to the hot water switching valve 6 Import, the a port of the hot water switching valve 6 is connected to the inlet of the water condenser 1, the b port of the hot water switching valve 6 is connected to the inlet of the heating and cooling reversing valve 8, and the d port of the heating and cooling reversing valve 8 is connected to the compressor 5 return port. The e port of the heating and cooling reversing valve 8 is connected to the h port of the outer heat exchanger unit 3, the i port of the outer heat exchanger unit 3 is connected to the end of the throttle unit 4, and the c port of the heating and cooling reversing valve 8 is connected to the plurality of groups of the inner heat exchanger. The f port of the unit 2, the g ports of the respective inner heat exchanger units 2 are respectively connected in series with one end of the electronic expansion valve 14, and the other end of each electronic expansion valve 14 is connected in common with the outlet of the water condenser 1 and the other end of the throttle member 4.

This embodiment adopts a towing three structure, which is the same as the four working modes described in FIG. 1. In the case of single cooling air, if the refrigerant in the inner and outer heat exchanger units 2, 3 is excessive, the control system 9 is opened. The throttle member 4, and the small electronic expansion valve 14 is closed, and the excess refrigerant is discharged into the water condenser 1. If the refrigerant in the inner and outer heat exchanger units 2, 3 is less, the control system 9 passes the small throttle. The component 4, and the large electronic expansion valve 14, is opened, and the refrigerant in the water condenser 1 is pumped out into the inner and outer heat exchanger units 2, 3.

In the case of single heating, if the refrigerant in the inner and outer heat exchanger units 2, 3 is excessive, the control system 9 passes the small throttle member 4 and opens the large electronic expansion valve 14 to discharge excess refrigerant into the water. In the condenser 1, if the refrigerant in the inner and outer heat exchanger units 2, 3 is less, the control system 9 opens the large throttle member 4, and closes the small heating and cooling electronic expansion valve 14, the water condenser 1 The refrigerant is pumped out into the inner and outer heat exchanger units 2, 3.

In the operation of the refrigerating hot water, if the refrigerant in the inner heat exchanger unit 2 and the water condenser 1 is excessive, the control system 9 opens the large throttle unit 4 and closes the small electronic expansion valve 14 to discharge the excess refrigerant. In the heat exchanger unit 3, if the refrigerant in the inner heat exchanger unit 2 and the water condenser 1 is less, the control system 9 passes the small throttle unit 4 and opens the large electronic expansion valve 14 to exchange heat. The refrigerant in the unit 3 is pumped out into the internal heat exchanger unit 2 and the water condenser 1.

When the heat pump hot water is working, if the refrigerant in the water condenser 1 and the outer heat exchanger unit 3 is excessive, the control system 9 discharges the excess refrigerant by closing the small throttle member 4 and opening the large electronic expansion valve 14. In the inner heat exchanger unit 2, if the refrigerant in the water condenser 1 and the outer heat exchanger unit 3 is less, the control system 9 opens the large throttle member 4 and closes the small electronic expansion valve 14 to exchange heat therein. The refrigerant in the unit 2 is pumped out into the water condenser 1 and the outer heat exchanger unit 3.

In this embodiment, whether it is a single machine operation, a two-machine operation, and a three-machine operation, the energy efficiency ratio is greatly improved on the basis of the ordinary one-to-three air conditioner.

Example 3

As shown in Fig. 3, it comprises a water condenser 1, an internal heat exchanger unit 2, an external heat unit 3, a throttle unit 4, a compressor 5, a hot water switching valve 6, a refrigeration check valve 7, and a cooling and heating system. Reversing valve 8, control system 9, heating check valve 10, refrigeration capillary 11, heating capillary 12, throttling capillary 13 and connecting line, in the hot water air conditioning unit, the outlet of the compressor 5 is connected to hot water switching The inlet of the valve 6, the a port of the hot water switching valve 6 is connected to the inlet of the water condenser 1, the k port of the hot water switching valve 6 is connected to the throttle capillary 13, the b port of the hot water switching valve 6 and the warm and cold switching valve 8 The inlet and the other port of the throttling capillary 13 are connected in common, the outlet of the water condenser 1 is connected to the inlet of the throttle member 4, the port d of the heating and cooling reversing valve 8 is connected to the return port of the compressor 5, and the c port of the reversing valve 8 is connected. The f port of the inner heat exchanger unit 2, the e port of the cold and warm reversing valve 8 is connected to the h port of the outer heat exchanger unit 3, the i port of the outer heat exchanger unit 3 and the cooling hair The narrow tube 11 and the outlet of the heating check valve 10 are connected in common, and the g port of the inner heat exchanger unit 2 is connected with the heating capillary 12 and the outlet of the cooling check valve 7, and the other end of the cooling capillary 11 and the other end of the heating capillary 12 It is connected with the inlet of the heating check valve 10, the inlet of the refrigeration check valve 7, and the outlet of the throttle member 4.

This embodiment is the same as the four working modes described in FIG. 1. Compared with FIG. 1, this embodiment has a throttling capillary 13 added, and in summer, when it is heated in winter, there is a little throttled high-pressure refrigerant to water condenser 1 The water in the middle is heated and kept warm. When the cooling, the heating air volume changes, and the indoor temperature change, the dynamic adjustment of the throttle unit 4 maintains the optimum efficiency of the hot water air conditioner, and the charge amount of the refrigerant during installation is allowed. A wider range.

Example 4

As shown in Figure 4, it comprises a water condenser 1, an internal heat exchanger unit 2, an external heat exchanger unit 3, a throttling unit 4, a compressor 5, a hot water switching valve 6, a heating and cooling reversing valve 8, control System 9, solenoid valve 15 and connecting line, the outlet of compressor 5 is connected to the inlet of hot water switching valve 6, the port a of hot water switching valve 6 is connected to the inlet of water condenser 1, the port b of hot water switching valve 6 is The inlet of the warm and cold reversing valve 8 and the n port of the solenoid valve 15 are connected in common, the m port of the solenoid valve 15 is connected to the outlet of the water condenser 1, and the d port of the reversing and reversing valve 8 is connected to the compressor 5 return port, the heating and cooling reversing valve The c port of 8 is connected to the f port of the heat exchanger unit 2, the e port of the heating and cooling reversing valve 8 is connected to the h port of the outer heat exchanger unit 3, and the i port of the outer heat exchanger unit 3 is connected to the throttle unit 4, section The j port of the flow unit 4 is connected to the g port of the inner heat exchanger unit 2.

When the hot water air conditioner operates in a single cooling air or a single heating air mode, the hot water switching valve 6 inlet is connected to the b port, if the refrigerant in the inner and outer heat exchanger units 2, 3 exceeds the specified condensing evaporation pressure value The control system 9 discharges excess refrigerant in the inner and outer heat exchanger units 2, 3 into the water condenser 1 through a solenoid valve 15 connected to the high pressure output line of the compressor 5, so that the inner and outer heat exchanger units are The refrigerant in 2, 3 reaches the optimum value.

When the hot water air conditioner operates in the hot water cooling mode, the hot water switching valve 6 inlet is connected to the a port, and the refrigerant in the inner heat exchanger unit 2 and the water condenser 1 exceeds the prescribed condensing evaporation pressure value, the control system 9 is reduced. The flow rate of the throttle member 4, the excess refrigerant in the inner heat exchanger unit 2 and the water condenser 1 is retained in the outer heat exchanger unit 3, so that the refrigerant in the inner heat exchanger unit 2 and the water condenser 1 reaches best value. When the refrigerant in the inner heat exchanger unit 2 and the water condenser 1 is lower than the prescribed condensing evaporation pressure value, the control system 9 increases the flow rate of the throttle unit 4, and transfers the refrigerant stored in the outer heat exchanger unit 3 to In the inner heat exchanger unit 2 and the water condenser 1, the refrigerant in the inner heat exchanger unit 2 and the water condenser 1 is brought to an optimum value.

When the hot water air conditioner operates in the heat pump hot water mode, the hot water switching valve 6 inlet is connected to the a port, and the refrigerant in the outer heat exchanger unit 3 and the water condenser 1 exceeds the prescribed condensing evaporation pressure value, the control system 9 is reduced. The flow of the throttle member 4 discharges the excess refrigerant in the outer heat exchanger unit 3 and the water condenser 1 into the inner heat exchanger unit 2, so that the refrigerant in the outer heat exchanger unit 3 and the water condenser 1 reaches best value. When the refrigerant in the outer heat exchanger unit 3 and the water condenser 1 is lower than the prescribed condensing evaporation pressure value, the control system 9 increases the flow rate of the throttle unit 4, and transfers the refrigerant stored in the inner heat exchanger unit 2 to the outside. In the heat exchanger unit 3 and the water condenser 1, the refrigerant in the outer heat exchanger unit and the water condenser is brought to an optimum value.

Example 5

As shown in Figure 5, it includes a water condenser 1, an internal heat exchanger unit 2, an external heat exchanger unit 3, and a thermal expansion valve. 19, compressor 5, hot water switching valve 6, refrigeration check valve 7, cooling and heating reversing valve 8, control system 9, heating check valve 10, refrigeration capillary 11, heating capillary 12, outer balance tube 17, sense The temperature package 18, and the connecting pipeline, the outlet of the compressor 5 is connected to the inlet of the hot water switching valve 6, the a port of the hot water switching valve 6 is connected to the inlet of the water condenser 1, and the outlet of the water condenser 1 is connected to the inlet of the thermal expansion valve 19, hot water The b port of the switching valve 6 is connected to the inlet of the heating and cooling reversing valve 8, the d port of the reheating and reversing valve 8 is connected to the return port of the compressor 5, and the c port of the reversing and reversing valve 8 is connected to the f port of the inner heat exchanger unit 2, The e port of the heating and cooling reversing valve 8 is connected to the h port of the outer heat exchanger unit 3, and the i port of the outer heat exchanger unit 3 is connected with the cooling capillary 11 and the outlet of the heating check valve 10, and the internal heat exchanger (g) The port is connected with the heating capillary (12), the cooling single valve (7) outlet, the other end of the cooling capillary (11), the other end of the heating capillary (12) and the refrigeration check valve (7) inlet, heating check valve (10) Imported, thermal expansion valve (19) The common connection of the outlet, the temperature of the thermal expansion valve (19) The package (18) is bundled in the return line of the compressor (5), and the outer balance tube (17) of the thermal expansion valve (19) is connected to the return port of the compressor (5). The working principle of this embodiment is the same as that of the first embodiment.

Example 6

As shown in Fig. 6, it comprises a water condenser 1, an internal heat exchanger unit 2, an external heat exchanger unit 3, a throttling unit 4, a compressor 5, a hot water switching valve 6, a heating and cooling reversing valve 8, control System 9, first solenoid valve 15, second solenoid valve 16 and connecting line, the outlet of compressor 5 is connected to the inlet of hot water switching valve 6, the port a of hot water switching valve 6 is connected to the inlet of water condenser 1, hot water The b port of the switching valve 6 is connected to the inlet of the warm and cold reversing valve 8, the d port of the reheating and reversing valve 8 is connected to the compressor 5 return port, and the c port of the reversing and reversing valve 8 is connected to the f port of the inner heat exchanger unit 2, which is warm and cold. The e port of the reversing valve 8 is connected to the h port of the outer heat exchanger unit 3, and the i port of the outer heat exchanger unit 3 is connected in common with one end of the throttle unit 4 and the second solenoid valve 16, and the inner heat exchanger unit 2 The g port is commonly connected to the other end of the throttle member 4 and one end of the first solenoid valve 15, and the outlet of the water condenser 1 is commonly connected to the other ends of the first solenoid valve 15 and the second solenoid valve 16.

In this embodiment, when the single refrigerating air works, when the refrigerant in the inner and outer heat exchanger units 2, 3 is excessive, the refrigerant is discharged into the water condenser 1 through the second electromagnetic valve 16, when the inner and outer heat exchanger units are When the refrigerant is absent in 2, 3, the refrigerant in the water condenser 1 is withdrawn through the first solenoid valve 15 and transferred to the inner and outer heat exchanger units 2, 3.

Single heating air operation, when the internal and external heat exchanger units 2, 3 have more refrigerant, the first electromagnetic valve 15 discharges more refrigerant into the water condenser 1, when the internal and external heat exchanger units When the refrigerant is absent in 2, 3, the refrigerant in the water condenser 1 is withdrawn through the second solenoid valve 16 and transferred to the inner and outer heat exchanger units 2, 3.

In the cooling hot water and the heat pump hot water, efficient operation of the cooling hot water and the heat pump hot water is completed by the throttling of the second solenoid valve 16 and the first solenoid valve 15 and the dynamic adjustment of the throttle member 4, respectively.

Example 7

As shown in FIG. 7, it comprises a water condenser 1, an internal heat exchanger unit 2, an external heat exchanger unit 3, a shut-off unit 4, 4', a compressor 5, and a hot water switching valve 6, which can be applied in this embodiment. For single refrigerating air conditioning unit with hot water or ground source heat pump system with hot water, the outlet of compressor 5 is connected to the inlet of hot water switching valve 6, the port of hot water switching valve 6 is connected to the inlet of water condenser 1, water condenser 1 The outlet is connected to the inlet of the shut-off part 4, the hot water switching valve is b port connected to the outer heat exchanger unit 3 The outlet of the outer heat exchanger unit 3 is connected to the inlet of the shut-off member 4', and the other port of the shut-off member 4 is connected to the other port of the shut-off member 4', and is connected to the inlet of the heat exchanger unit 2, and the outlet of the heat exchanger unit 2 is connected and compressed. Machine return air.

The working principle is: when the compressor outlet passes through the a port of the hot water switching valve 6, when the water condenser 1 is connected, the device is in the cooling hot water working position, and the high pressure gas outputted by the compressor is condensed by the water condenser 1 After entering the liquid, it enters the internal heat exchanger unit 2 through the shut-off member 4 to evaporate heat, and returns to the compressor. Since the evaporation pressure of the internal heat exchanger unit 2 is usually smaller than the pressure of the external heat exchanger unit 3, the external heat exchanger The refrigerant in the unit 3 enters the evaporator 2 through the shut-off member 4' to meet the refrigerant working requirements of the system for cooling hot water.

When the compressor outlet passes through the b port of the hot water switching valve 6, and is connected to the inlet of the outer heat exchanger unit 3, the device operates in a single cooling air position, and the high pressure gas output from the compressor 5 passes through the b port of the hot water switching valve 6. After the external heat exchanger unit 3 is condensed into a liquid, it enters the internal heat exchanger unit 2 through the shut-off member 4', absorbs heat and turns into a gas, and then enters the compressor 5 return port, because the temperature of the internal heat exchanger unit 2 is lower than that of the water. The temperature in the condenser 1 is such that the refrigerant in the water condenser 1 enters the inner heat exchanger unit 2 through the shut-off member 4, ensuring that the refrigerant of the system is always in an optimum state.

The shut-off parts 4, 4' can use components such as capillary electronic expansion valves, thermal expansion valves, and solenoid valves. Internal heat exchanger unit 2 If the ground source heat pump heat exchanger is used, the existing ground source heat pump heating system can be added to the domestic hot water function. Example 8

As shown in Fig. 8, it comprises a water condenser 1, an internal heat exchanger unit 2, an external heat exchanger unit 3, a three-terminal thermal expansion valve 20, a compressor 5, a hot water switching valve 6, and a cooling and heating reversing valve. 8. The control system 9, the outer balance tube 17, the temperature sensing package 18, and the connecting line. In the hot water air conditioning unit, the outlet of the compressor 5 is connected to the inlet of the hot water switching valve 6, and the a port of the hot water switching valve 6 Connected to the inlet of the water condenser 1, the b port of the hot water switching valve 6 is connected to the inlet of the heating and cooling reversing valve 8, the outlet of the water condenser 1 is connected to the intermediate inlet of the three-terminal thermal expansion valve 20, and the d of the reversing valve 8 The port is connected to the compressor 5 return port, the c port of the heating and cooling reversing valve 8 is connected to the f port of the inner heat exchanger unit 2, and the e port of the cold and warm switching valve 8 is connected to the h port of the outer heat exchanger unit 3, the outer heat exchanger The i port of the unit 3 is connected to the right port of the three-terminal thermal expansion valve 20, the g port of the inner heat exchanger unit 2 is connected to the left port of the three-terminal thermal expansion valve 20, and the temperature of the three-terminal thermal expansion valve 20 is sensed. The bag 18 is bundled on the return line of the compressor 5, three-terminal type The outer balance pipe 17 of the thermal expansion valve 20 is connected to the return port of the compressor 5.

Compared with the first embodiment, the working process of the present embodiment uses a three-terminal thermal expansion valve instead of the throttling member 4 of FIG. 1 , and the working principle of the single valve 7, 10 is the same as that described in FIG. 1 .

Example 9

As shown in FIG. 9, it includes a water condenser 1, an internal heat exchanger unit 2, an external heat exchanger unit 3, a throttle unit 4, a compressor 5, a hot water switching valve 6, a solenoid valve 15, and a heating and cooling commutation. Valve 8, control system 9, electronic expansion valve 14 and connecting pipeline, in the hot water air conditioning unit, the outlet of the compressor 5 is connected to the inlet of the hot water switching valve 6, and the a port of the hot water switching valve 6 is connected to the inlet of the water condenser 1 The outlet of the water condenser 1 is connected to the inlet of the solenoid valve 15, the port b of the hot water switching valve 6 is connected to the inlet of the warm and cold switching valve 8, the port d of the heating and cooling switching valve 8 and the port k of the hot water switching valve 6, the compressor 5 The air return ports are connected in common, the c port of the heating and cooling reversing valve 8 is connected to the f port of the inner heat exchanger unit 2, the e port of the cold and warm reversing valve 8 is connected to the h port of the outer heat exchanger unit 3, and the outer heat exchanger unit 3 The i port is connected to the throttle unit 4, the g port of the inner heat exchanger unit 2 is connected to the electronic expansion valve 14, the throttle member 4, the electronic expansion valve 14 and the outlet of the solenoid valve 15 are common Connected.

In this embodiment, when the hot water air conditioner operates in the single cooling air mode, when the inlet of the hot water switching valve 6 is connected to the b port, and the inlet of the cooling and heating switching valve 8 is connected to the e port, the high pressure refrigerant output by the compressor 5 passes. The inlet of the hot water switching valve 6 is connected with the b port, the inlet of the cold and warm switching valve 8 and the e enter the outer heat exchanger unit 3 for condensation, and the throttling member 4, the electronic expansion valve 14 is throttled into the internal heat exchanger unit 2 for evaporative cooling The inlet of the water condenser 1 is connected to the return port of the compressor 5 through the a, k interface of the hot water switching valve 6, and the internal refrigerant is pumped out into the internal and external heat exchanger units 2, 3 to change the inside and outside. The refrigerant in the heat exchanger units 2, 3 meets the operational requirements.

When the hot water air conditioner operates in the single heating mode, the inlet of the hot water switching valve 6 is connected to the b port, and when the inlet of the cooling and heating reversing valve 8 is connected to the c port, the high pressure refrigerant output from the compressor 5 passes through the hot water switching valve. 6 inlet and b port connection, the inlet of the cold and warm reversing valve 8 and the c port enter the inner heat exchanger unit 2 for condensation, through the throttling component 4, the electronic expansion valve 14 is throttled into the outer heat exchanger unit 3 for evaporative cooling, The inlet of the water condenser 1 is connected to the return port of the compressor 5 through the &, k interface of the hot water switching valve 6, and the internal refrigerant is pumped out into the inner and outer heat exchanger units 2, 3 to make the inner and outer heat exchange The refrigerant in units 2, 3 meets the operational requirements.

When the hot water air conditioner is in the cooling hot water working mode, the hot water switching valve 6 inlet is connected to the a port, and when the throttle unit 4 is closed, the high pressure refrigerant outputted by the compressor 5 passes through the hot water switching valve 6 inlet and the a port enters the water. The condenser 1 is condensed, and the condensed liquid passes through the electromagnetic valve 15 and the electronic expansion valve 14, enters the inner heat exchanger unit 2 to evaporate and cool, and then passes through the cold and warm switching valve 8 (;, d port returns to the compressor 5 return port, The refrigerant inside the external heat exchanger unit 3 passes through the 6th and dth ports of the heating and cooling reversing valve 8, and is pumped out to the internal heat exchanger unit 2 and the water condenser 1, so that the internal heat exchanger unit 2 and the water condenser The refrigerant in 1 meets the job requirements.

When the hot water air conditioner is in the heat pump hot water working mode, the hot water switching valve 6 inlet is connected to the a port, and when the electronic expansion valve 14 is closed, the high pressure refrigerant outputted by the compressor 5 passes through the hot water switching valve 6 inlet and the a port enters the water. The condenser 1 is condensed, and the condensed liquid passes through the electromagnetic valve 15 and the throttling member 4, enters the outer heat exchanger unit 3 to evaporate and absorb heat, and then returns to the compressor 5 return port through the d and e ports of the warm and cold reversing valve 8. The refrigerant in the inner heat exchanger unit 2 passes through the 0, d ports of the warm and cold reversing valve 8, and is pumped out into the outer heat exchanger unit 3 and the water condenser 1, so that the outer heat exchanger unit 3 and the water condenser The refrigerant in 1 meets the job requirements.

A special function of this embodiment is: When the solenoid valve 15 is turned on, the water condenser 1 can be used as an evaporator during single cooling or single heating operation, and the heat in the water condenser 1 can be passed through the internal heat exchange. The heat exchanger 3 or the outer heat exchanger 3 is released indoors or outdoors. When the water condenser 1 is connected to the solar water heater, the heat collected by the solar water heater can be released into the room through the air conditioner water heater, thereby saving more energy.

The internal and external heat exchanger units of the hot water air conditioner 2, 3 usually consist of a heat exchanger and a fan or a water pump. The control method is suitable for both small household air conditioners and large centralized air conditioners.

Claims

Rights request

1. A hot water air conditioner comprising a water condenser (1), an internal heat exchanger unit (2), an external heat exchanger unit (3), a throttling unit (4), a compressor (5), and a heat Water switching valve (6), refrigeration check valve (7), heating and cooling reversing valve (8), control system (9), heating check valve (10), refrigeration capillary (11), heating capillary (12) And a connecting pipe, characterized in that: the outlet of the compressor (5) is connected to the inlet of the hot water switching valve (6), and the port of the hot water switching valve (6) is connected to the inlet of the water condenser (1), water The condenser (1) outlet is connected to one end of the throttle member (4), the (b) port of the hot water switching valve (6) is connected to the inlet of the heating and cooling directional control valve (8), and the (d) of the cooling and heating directional control valve (8) The port is connected to the compressor (5) air return port, and the (C) port of the heating and cooling reversing valve (8) is connected to the (f) port of the inner heat exchanger unit (2), and the cooling and heating reversing valve (8)

(e) The port is connected to the (h) port of the outer heat exchanger unit (3), and the (i) port of the outer heat exchanger unit (3) is connected to the outlet of the cooling capillary (11) and the heating check valve (10). , the internal heat exchanger unit (2)

(g) The port is connected with the heating capillary (12) and the cooling check valve (7) outlet, the other end of the cooling capillary (11), the other end of the heating capillary (12) and the refrigeration check valve (7) are imported. Hot check valve (10) inlet, throttle unit (4) and the other end are connected together.

2. A hot water air conditioner comprising a water condenser (1), an internal heat exchanger unit (2), an external heat exchanger unit (3), a throttling unit (4), a compressor (5), and a heat Water switching valve (6), heating and cooling reversing valve (8), control system (9), electronic expansion valve (14) and connecting line, characterized in: The outlet of the compressor (5) is connected to the hot water switching valve (6) The inlet of the hot water switching valve (6) is connected to the inlet of the water condenser (1), and the port of the hot water switching valve (6) is connected to the inlet of the heating and cooling directional control valve (8). The (d) port of the reversing valve (8) is connected to the compressor (5) return port, and the (e) port of the heating and cooling reversing valve (8) is connected to the (h) port of the outer heat exchanger unit (3). The (i) port of the unit (3) is connected to the throttling unit (4) at one end. When multiple sets of internal heat exchanger units (2) are used, the (c) port of the cooling and heating reversing valve (8) is connected to multiple sets of heat exchange. (f) port of the unit (2), the (g) port of each inner heat exchanger unit (2) is connected in series with one end of the electronic expansion valve (14), and each electronic expansion An outlet (14) in parallel with the other end of the throttle member (4) and the other end of a water condenser (1) are connected in common.

3. A hot water air conditioner comprising a water condenser (1), an internal heat exchanger unit (2), an external heat exchanger unit (3), a thermal expansion valve (19), a compressor (5), heat Water switching valve (6), refrigeration check valve (7), heating and cooling reversing valve (8), control system (9), heating check valve (10), refrigeration capillary (11), heating capillary (12) , outer balance tube (17), temperature sensing package (18), and connecting pipeline, characterized by: compressor (5) outlet connected to hot water switching valve (6) inlet, hot water switching valve (6) (a ) Port connection water condenser (1) Import, water condenser (1) outlet is connected to the inlet of the thermal expansion valve (19), the port of the hot water switching valve (6) is connected to the inlet of the heating and cooling reversing valve (8), and the reversing valve (8) d) The port is connected to the return port of the compressor (5), the (c) port of the cooling and heating reversing valve (8) is connected, the (f) port of the internal heat exchanger unit (2), and the reversing and reversing valve (8) ( e) The port is connected to the (h) port of the outer heat exchanger unit (3), and the (i) port of the outer heat exchanger unit (3) is connected to the cooling capillary (11) and the outlet of the heating check valve (10). The inner heat exchanger (g) port is connected with the heating capillary (12), the cooling single valve (7) outlet, the other end of the cooling capillary (11), the other end of the heating capillary (12) and the refrigeration check valve (7) The inlet of the inlet, the heating check valve (10) and the outlet of the thermal expansion valve (19) are connected together, and the temperature sensing package (18) of the thermal expansion valve (19) is bundled in the return line of the compressor (5), and the thermal expansion valve The outer balance pipe (17) of (19) is connected to the return port of the compressor (5).

4. A hot water air conditioner comprising a water condenser (1), an internal heat exchanger unit (2), an external heat exchanger unit (3), a throttling unit (4), a compressor (5), and a heat Water switching valve (6), heating and cooling reversing valve (8), control system (9), first solenoid valve (15), second solenoid valve (16) and connecting pipeline, characterized by: compressor (5) The outlet is connected to the inlet of the hot water switching valve (6), the (a) port of the hot water switching valve (6) is connected to the inlet of the water condenser (1), and the port (b) of the hot water switching valve (6) is connected to the heating and cooling directional control valve. (8) of the inlet, the (d) port of the heating and cooling reversing valve (8) is connected to the compressor (5), the return port, the reversing and reversing valve (8)

(c) The port is connected to the (f) port of the heat exchanger unit (2), and the (e) port of the cooling and heating reversing valve (8) is connected to the (h) port of the outer heat exchanger unit (3), the outer heat exchanger The (i) port of the unit (3) is connected to one end of the throttle unit (4) and the second solenoid valve (16), and the (g) port of the inner heat exchanger unit (2) and the throttle unit (4) The other end is connected in common with one end of the first solenoid valve (15), and the outlet of the water condenser (1) is connected in common with the other ends of the first solenoid valve (15) and the second solenoid valve (16).

5. A hot water air conditioner comprising a water condenser (1), an internal heat exchanger unit (2), an external heat exchanger unit (3), a throttling unit (4, 4'), a compressor ( 5), hot water switching valve (6), and connecting pipeline, characterized by: compressor (5) outlet connected to hot water switching valve (6) inlet, hot water switching valve (6) (a) port connecting water Condenser (1) inlet, water condenser (1) outlet connection throttling unit (4) inlet, hot water switching valve (6) (b) port connection external heat exchanger unit (3) inlet, external heat exchanger Unit (3) Outlet connection throttling part (4') inlet, throttling part (4) The other port is connected with the throttling part (4'). The other port is connected and connected to the inlet of the internal heat exchanger unit (2). Heater unit (2) The outlet is connected to the compressor (5) return port.

6. A hot water air conditioner comprising a water condenser (1), an internal heat exchanger unit (2), an external heat exchanger unit (3), a three-terminal thermal expansion valve (20), a compressor ( 5), hot water switching valve (6), cold and warm change The valve (8), the control system (9), the outer balance tube (17), the temperature sensing package (18), and the connecting line are characterized in that: the outlet of the compressor (5) is connected to the hot water switching valve (6) The inlet of the hot water switching valve (6) is connected to the inlet of the water condenser (1), and the port (b) of the hot water switching valve (6) is connected to the inlet of the cooling and heating reversing valve (8). The condenser (1) outlet is connected to the middle inlet of the three-terminal thermal expansion valve (20), and the (d) port of the heating and cooling reversing valve (8) is connected to the compressor (5) return port, and the cooling and heating reversing valve (8) ( c) The port is connected to the (f) port of the heat exchanger unit (2), the (e) port of the heating and cooling reversing valve (8) is connected to the (h) port of the outer heat exchanger unit (3), and the external heat exchanger unit (3) The (i) port is connected to the right port of the three-terminal thermal expansion valve (20), and the (g) port of the inner heat exchanger unit (2) is connected to the left port of the three-terminal thermal expansion valve (20). The temperature sensing package (18) of the three-terminal thermal expansion valve (20) is bundled in the return line of the compressor (5), and the outer balancing tube (17) of the three-terminal thermal expansion valve (20) is connected to the compression. On the air return of the machine (5).

7. A hot water air conditioner comprising a water condenser (1), an internal heat exchanger unit (2), an external heat exchanger unit (3), a throttling unit (4), a compressor (5), Hot water switching valve (6), solenoid valve (15), heating and cooling reversing valve (8), control system (9), electronic expansion valve (14) and connecting line, characterized by: compressor (5) outlet connection Hot water switching valve (6) inlet, hot water switching valve (6) (a) port connected to water condenser (1) inlet, water condenser (1) outlet connected to solenoid valve (15) inlet, hot water switching valve (6) The (b) port is connected to the inlet of the heating and cooling directional control valve (8), the (d) port of the heating and cooling directional control valve (8) and the (k) port of the hot water switching valve (6), and the compressor (5) The air return ports are connected together, the (c) port of the heating and cooling reversing valve (8) is connected to the (f) port of the inner heat exchanger unit (2), and the (e) port of the heating and cooling reversing valve (8) is connected to the outer heat exchanger. (h) port of unit (3), (i) port of external heat exchanger unit (3) is connected to one end of throttling part (4), and (g) port of internal heat exchanger unit (2) is connected One end of the expansion valve (14), the outlet of the water condenser (1) is connected to the solenoid valve (15), the other end of the throttle member (4), the other end of the electronic expansion valve (14) is connected with the other end of the solenoid valve (15). .

8. A control method for a hot water air conditioner, characterized in that: adjusting the configuration of the refrigerant in the water condenser and the inner and outer heat exchanger units according to the working mode to adapt to the working state of the hot water air conditioner:

When the hot water air conditioner operates in a single cooling air or a single heating air mode, when the refrigerant in the inner and outer heat exchanger units fails to reach the prescribed condensation evaporation value, the control system extracts the refrigerant in the water condenser. Into the heat exchanger unit inside and outside;

When the hot water air conditioner operates in the hot water cooling mode, and the refrigerant in the water condenser and the internal heat exchanger unit does not reach the prescribed condensation evaporation value, the control system pumps the refrigerant in the outer heat exchanger unit into the refrigerant Into the water condenser and the internal heat exchanger unit; When the hot water air conditioner operates in the heat pump hot water mode, and the refrigerant in the water condenser and the outer heat exchanger unit does not reach the prescribed condensation evaporation value, the control system pumps the refrigerant in the heat exchanger unit into the heat exchanger. Go to the water condenser and the external heat exchanger unit.

9. The method of controlling a hot water air conditioner according to claim 8, wherein: the refrigerant is pumped in and out through a capillary tube disposed on a connecting pipe between the water condenser and the inner and outer heat exchanger units, One-way valve or hot water switching valve, solenoid valve, thermal expansion valve.

10. The method of controlling a hot water air conditioner according to claim 8, wherein: when the hot water air conditioner operates in a single cooling air or a single heating air mode, the refrigerant in the inner and outer heat exchanger units exceeds When the specified condensation evaporation value, the control system discharges the excess refrigerant in the internal and external heat exchanger units into the water condenser through the capillary tube, the check valve or the hot water switching valve, the solenoid valve, and the thermal expansion valve on the connecting line. in.