CN104110907B - Single cold type air-conditioner and heating and air conditioner - Google Patents

Abstract

The invention discloses a cooling-only air conditioner and a heating and cooling air conditioner. The cooling-only air conditioner includes a compressor, an outdoor heat exchanger, a flash evaporator, an electric control system and an indoor heat exchanger, and the outlet of the outdoor heat exchanger communicates with the first interface of the flash evaporator. The inlet of the electronically controlled heat exchanger communicates with the second port of the flasher. The inlet of the indoor heat exchanger communicates with the third port of the flash evaporator. The electric control system of the cooling-only air conditioner of the present invention has good heat dissipation and high safety. The heating and cooling air conditioner includes a compressor, a four-way valve, a flash evaporator, an outdoor heat exchanger, an indoor heat exchanger, an electric control system and a controller, the first interface of the flash evaporator communicates with one end of the outdoor heat exchanger, and the flash evaporator The second port of the flash evaporator communicates with the inlet of the electric control heat exchanger, and the third port of the flash evaporator communicates with one end of the indoor heat exchanger. The controller allows the gaseous refrigerant passing through the electronically controlled heat exchanger to flow back into the compressor. The electric control system of the heating and cooling air conditioner of the present invention has good heat dissipation and high safety.

Description

Cooling-only air conditioners and heating and cooling air conditioners

technical field

The invention relates to the field of household appliances, in particular to a cooling-only air conditioner and a heating and cooling air conditioner.

Background technique

With the pursuit of energy saving and emission reduction and human beings' pursuit of living comfort, inverter air conditioners have been widely used in the industry. The environment greatly restricts the operation of the compressor frequency. At present, the electronic control heat dissipation method commonly used is mostly a metal radiator to dissipate heat through air convection, but in the case of high outdoor ambient temperature, due to the large heat generation, it is usually used to reduce the operating frequency of the compressor to reduce the electronic control heat generation. Ensure the normal operation of the air conditioner, which greatly affects the cooling effect of the inverter air conditioner in the high outdoor environment, and affects the comfort of the user.

The existing technology of cooling the electronic control system of the outdoor unit through the refrigeration cycle basically uses the liquid refrigerant to evaporate and absorb heat in the electronic control heat exchanger to cool the electronic control heat exchanger. This method first loses the cooling capacity of the air conditioner and energy efficiency. Secondly, due to the low temperature during the evaporation process of the refrigerant, condensed water will be generated in the electronic control system. There are hidden dangers in the use of the electronic control system, which will affect the service life of the air conditioner.

Contents of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art.

Therefore, an object of the present invention is to provide a cooling-only air conditioner with good heat dissipation and high safety of the electronic control system.

Another object of the present invention is to provide a heating and cooling air conditioner with good heat dissipation and high safety of the electronic control system.

The cooling-only air conditioner according to the embodiment of the present invention includes: a compressor, the compressor is provided with an exhaust port and an air return port; an outdoor heat exchanger, the inlet of the outdoor heat exchanger is connected to the exhaust port of the compressor The gas port is connected; a flash evaporator, the flash evaporator is provided with a first interface, a second interface and a third interface, and the outlet of the outdoor heat exchanger is communicated with the first interface of the flash evaporator through a throttling element; An electronically controlled control system, the electronically controlled control system includes a frequency conversion module and an electrically controlled heat exchanger, the inlet of the electrically controlled heat exchanger communicates with the second interface, and the outlet of the electrically controlled heat exchanger communicates with the The air return port of the compressor is connected; the indoor heat exchanger, the inlet of the indoor heat exchanger is connected with the third interface, and the outlet of the indoor heat exchanger is connected with the air return port of the compressor.

According to the cooling-only air conditioner of the embodiment of the present invention, the refrigerant in the gas-liquid mixed state is separated into gas and liquid by using the flash evaporator, so that the refrigerant entering the indoor heat exchanger is a liquid refrigerant, because the liquid refrigerant can exchange heat indoors Evenly distributed in each flow path of the heat exchanger, which improves the heat exchange efficiency of the indoor heat exchanger and avoids the phenomenon of condensation water. The temperature difference between the surface of the electronically controlled heat exchanger and the frequency conversion module is too large due to excessive heat, thereby avoiding the generation of condensed water in the electronically controlled control system, ensuring the service life and safety of the electronically controlled control system, and prolonging the service life of the cooling-only air conditioner. service life.

In addition, the cooling-only air conditioner according to the present invention also has the following additional technical features:

Optionally, the throttling element is a capillary or an electronic expansion valve.

In some embodiments of the present invention, a metal heat conducting plate is provided between the frequency conversion module and the electric control heat exchanger. Therefore, sufficient heat exchange between the electronically controlled heat exchanger and the frequency conversion module can be further ensured.

The heating and cooling air conditioner according to the embodiment of the present invention includes: a compressor, the compressor is provided with an exhaust port and an air return port; a four-way valve, the four-way valve is provided with a first valve port, a second valve port, The third valve port and the fourth valve port, the first valve port communicates with the exhaust port, and the second valve port communicates with the air return port through a first pipeline; flash evaporator, the flash evaporator A first interface, a second interface and a third interface are provided, the first interface communicates with the third valve port through the second pipeline, and the third interface communicates with the fourth valve port through the first The three pipelines are connected, and the second interface is communicated with the air return port of the compressor through the fourth pipeline; the outdoor heat exchanger, the outdoor heat exchanger is arranged on the second pipeline; the throttling element, the The throttling element is arranged on the second pipeline and adjacent to the first interface; the indoor heat exchanger is arranged on the third pipeline; the electric control system, the electric control system The control system includes a frequency conversion module and an electric control heat exchanger, the electric control heat exchanger is arranged on the fourth pipeline; a controller is arranged on the fourth pipeline, so that the The gaseous refrigerant in the four pipelines flows back into the air return port of the compressor.

According to the heating and cooling air conditioner of the embodiment of the present invention, in the cooling state, the refrigerant in the gas-liquid mixed state is separated into gas and liquid by using the flash evaporator, so that the refrigerant entering the indoor heat exchanger is a liquid refrigerant, because the liquid refrigerant can It is evenly distributed in each flow path of the indoor heat exchanger, which improves the heat exchange efficiency of the indoor heat exchanger and avoids the phenomenon of condensation water. Continuous evaporation and heat absorption lead to an excessive temperature difference between the surface of the electronically controlled heat exchanger and the frequency conversion module, thereby avoiding the generation of condensed water in the electronically controlled control system, ensuring the service life and safety of the electronically controlled control system, and extending the life of the heating and cooling air conditioner. service life of the device.

In addition, the heating and cooling air conditioner according to the present invention also has the following additional technical features:

In some embodiments of the present invention, one end of the fourth pipeline communicates with a section of the third pipeline between the indoor heat exchanger and the fourth valve port, and the controller is adjacent to the Electrically controlled heat exchanger outlet settings.

Optionally, the controller is a one-way valve, a solenoid valve or an electronic expansion valve.

In some other embodiments of the present invention, one end of the fourth pipeline communicates with the first pipeline, and the controller is disposed adjacent to the inlet of the electric control heat exchanger.

Optionally, the controller is a solenoid valve or an electronic expansion valve.

According to some embodiments of the present invention, a metal heat conducting plate is provided between the frequency conversion module and the electric control heat exchanger. Therefore, sufficient heat exchange between the electronically controlled heat exchanger and the frequency conversion module can be further ensured.

Optionally, the throttling element is a capillary or an electronic expansion valve.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and comprehensible from the description of the embodiments in conjunction with the following drawings, wherein:

1 is a schematic diagram of a cooling-only air conditioner according to an embodiment of the present invention;

2 is a schematic diagram of a heating and cooling air conditioner according to an embodiment of the present invention;

3 is a schematic diagram of a heating and cooling air conditioner according to another embodiment of the present invention;

Fig. 4 is a schematic diagram of a heating and cooling air conditioner according to yet another embodiment of the present invention;

5 is a schematic diagram of a flasher according to an embodiment of the present invention.

Reference signs:

Cooling-only air conditioner 100, heating and cooling air conditioner 200, compressor 1, exhaust port 10,

Air return port 11, outdoor heat exchanger 2, flash evaporator 3, first interface 30, second interface 31,

The third interface 32, the throttling element 4, the electric control heat exchanger 5, the indoor heat exchanger 6, the four-way valve 7,

The first valve port A, the second valve port B, the third valve port C, the fourth valve port D, the controller 8,

First pipeline 9, second pipeline 12, third pipeline 13, fourth pipeline 14

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying Describes, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate in a specific orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

A cooling-only air conditioner 100 according to an embodiment of the present invention will be described first with reference to FIG. 1 and FIG. 5 .

The cooling-only air conditioner 100 according to the embodiment of the present invention, as shown in FIG. 1 is provided with an exhaust port 10 and a return port 11. The inlet of the outdoor heat exchanger 2 communicates with the exhaust port 10 of the compressor 1 . The flasher 3 is provided with a first port 30 , a second port 31 and a third port 32 , and the outlet of the outdoor heat exchanger 2 communicates with the first port 30 of the flasher 3 through a throttling element 4 . The electronically controlled control system includes a frequency conversion module (not shown in the figure) and an electronically controlled heat exchanger 5. Heat exchange is performed between the electronically controlled heat exchanger 5 and the frequency conversion module to cool down the frequency conversion module. The entrance of the electronically controlled heat exchanger 5 is connected to the The second interface 31 communicates, and the outlet of the electronically controlled heat exchanger 5 communicates with the air return port 11 of the compressor 1 . The inlet of the indoor heat exchanger 6 communicates with the third port 32 , and the outlet of the indoor heat exchanger 6 communicates with the air return port 11 of the compressor 1 . Specifically, the outdoor heat exchanger 2 is a condenser, and the indoor heat exchanger 6 is an evaporator. Optionally, the throttling element 4 is a capillary tube or an electronic expansion valve.

Among them, the flash evaporator 3 can be understood in a broad sense, as long as the gas-liquid mixed refrigerant entering the flash evaporator 3 can be separated into a gas refrigerant and a liquid refrigerant, in the example of the present invention, as shown in Figure 5, the first The first port 30 and the second port 31 are set at the top of the flasher 3, and the third port 32 is set at the bottom of the flasher 3. The flasher 3 uses the principle of gravity, so that the gas-liquid mixed refrigerant entering the flasher 3 is The gaseous refrigerant is discharged from the second port 31 , and the liquid refrigerant is discharged from the third port 32 . Optionally, the shell of the flasher 3 can be made of metal material, preferably copper material.

When the cold-only air conditioner 100 is working, as shown by the arrow in Figure 1, the high-temperature and high-pressure refrigerant discharged from the exhaust port 10 of the compressor 1 enters the outdoor heat exchanger 2, and the high-temperature and high-pressure refrigerant in the outdoor heat exchanger 2 The refrigerant exchanges heat with the outside air to form a medium-temperature and high-pressure refrigerant. The refrigerant discharged from the outdoor heat exchanger 2 expands through the throttling element 4 into a gas-liquid mixed state, and the gas-liquid mixed state refrigerant enters from the first interface 30 The gas-liquid separation is carried out in the flash evaporator 3. The liquid refrigerant is discharged from the third interface 32 and enters the indoor heat exchanger 6 to evaporate and absorb heat to reduce the indoor temperature. The gaseous refrigerant is discharged from the second interface 31 and enters the electronically controlled heat exchange. The heat is absorbed in the heat exchanger 5 to cool the electronically controlled heat exchanger 5, and then the inverter module is cooled. Afterwards, the liquid refrigerant discharged from the indoor heat exchanger 6 is mixed with the gaseous refrigerant discharged from the electronically controlled heat The air return port 11 flows back into the compressor 1 to complete the refrigeration cycle.

According to the cooling-only air conditioner 100 of the embodiment of the present invention, the refrigerant entering the indoor heat exchanger 6 is a liquid refrigerant by using the flash evaporator 3 to separate the gas-liquid refrigerant from the gas-liquid mixed state. The flow paths of the indoor heat exchanger 6 are evenly distributed, which improves the heat exchange efficiency of the indoor heat exchanger 6 and avoids the phenomenon of condensation water. Avoid the excessive temperature difference between the surface of the electronically controlled heat exchanger 5 and the frequency conversion module due to the continuous evaporation and heat absorption of the refrigerant, thereby avoiding the generation of condensed water in the electronically controlled control system, ensuring the service life and safety of the electronically controlled control system, extending The service life of the cooling-only air conditioner 100 is extended.

According to some embodiments of the present invention, a metal heat conducting plate is provided between the frequency conversion module and the electronically controlled heat exchanger 5 , so as to further ensure sufficient heat exchange between the frequency conversion module and the electronically controlled heat exchanger 5 . Of course, the present invention is not limited thereto, and the frequency conversion module and the electronically controlled heat exchanger 5 may be in direct contact.

A heating and cooling air conditioner 200 according to an embodiment of the present invention will be described below with reference to FIGS. 2-5 .

The heating and cooling air conditioner 200 according to the embodiment of the present invention, as shown in Fig. 2-Fig. 6, an electronic control system and a controller 8, wherein the compressor 1 is provided with an exhaust port 10 and an air return port 11. The four-way valve 7 is provided with a first valve port A, a second valve port B, a third valve port C and a fourth valve port D, the first valve port A communicates with the exhaust port 10, and the second valve port B communicates with the return air port 11 are communicated through the first pipeline 9. The flash evaporator 3 is provided with a first port 30, a second port 31 and a third port 32, the first port 30 communicates with the third valve port C through the second pipeline 12, and the connection between the third port 32 and the fourth valve port D The second port 31 communicates with the air return port 11 of the compressor 1 through the fourth pipe 14 .

The outdoor heat exchanger 2 is arranged on the second pipe 12 , that is, one end of the outdoor heat exchanger 2 communicates with the first port 30 and the other end communicates with the third valve port C. The throttling element 4 is disposed on the second pipe 12 and adjacent to the first interface 30 . The indoor heat exchanger 6 is arranged on the third pipe 13 , that is, one end of the indoor heat exchanger 6 communicates with the third port 32 and the other end communicates with the fourth valve port D. The electric control system includes a frequency conversion module (not shown in the figure) and an electric control heat exchanger 5, the electric control heat exchanger 5 is arranged on the fourth pipeline 14, and heat exchange is performed between the electric control heat exchanger 5 and the frequency conversion module To cool the inverter module. The controller 8 is arranged on the fourth pipeline 14 so that the gaseous refrigerant passing through the fourth pipeline 14 flows back into the air return port 11 of the compressor 1 . Specifically, the outdoor heat exchanger 2 is a condenser, and the indoor heat exchanger 6 is an evaporator. Optionally, the throttling element 4 is a capillary tube or an electronic expansion valve.

Among them, the flash evaporator 3 should be understood in a broad sense. The flash evaporator 3 only needs to make the gas-liquid mixed refrigerant entering it can be separated into gaseous refrigerant and liquid refrigerant. In the example of the present invention, as shown in Figure 5, the first The interface 30 and the second interface 31 are set at the top of the flasher 3, and the third interface 32 is set at the bottom of the flasher 3. The flasher 3 uses the principle of gravity, so that the gas-liquid mixed refrigerant entering the flasher 3 is For separation, the gaseous refrigerant is discharged from the second port 31 , and the liquid refrigerant is discharged from the third port 32 . Optionally, the shell of the flasher 3 can be made of metal material, preferably copper material.

It is worth noting that the “communication” in the communication between the second interface 31 and the air return port 11 of the compressor 1 through the fourth pipeline 14 should be understood in a broad sense, that is, the communication can refer to one end of the fourth pipeline 14 It is directly communicated with the air return port 11 of the compressor 1, and it can also refer to the indirect communication between one end of the fourth pipeline 14 and the air return port 11 of the compressor 1, that is, the fourth pipeline 14 can communicate with the compressor through the first pipeline 9 or the fourth pipe 14 communicates with the air return port 11 of the compressor 1 through the part of the third pipe 13 located between the indoor heat exchanger 6 and the fourth valve port D, that is, one end of the fourth pipe 14 It can communicate with a section of the third pipeline 13 between the indoor heat exchanger 6 and the fourth valve port D, and one end of the fourth pipeline 14 can also communicate with the first pipeline 9 .

As shown in Figures 2 and 3, when one end of the fourth pipeline 14 communicates with the air return port 11 of the compressor 1 through a section of the third pipeline 13 between the indoor heat exchanger 6 and the fourth valve port D, At this time, the controller 8 is arranged adjacent to the outlet of the electronically controlled heat exchanger 5 , and optionally, the controller 8 can be a one-way valve, a solenoid valve or an electronic expansion valve. As shown in Figure 4, when one end of the fourth pipeline 14 is directly connected to the air return port 11 of the compressor 1 or communicated with the air return port 11 of the compressor 1 through the first pipe 9, the controller 8 is adjacent to the electric control heat exchanger 5 Optionally, the controller 8 can be a solenoid valve or an electronic expansion valve.

When the heating and cooling air conditioner 200 needs to perform cooling work, the first valve port A of the four-way valve 7 is connected to the third valve port C, and the second valve port B is connected to the fourth valve port D, as shown in Figure 2 and Figure 2. 3 and the solid line arrows in Fig. 4, the high-temperature and high-pressure refrigerant discharged from the exhaust port 10 of the compressor 1 enters the second pipeline 12 through the first valve port A and the third valve port C sequentially, and then the high-temperature The high-pressure refrigerant enters the outdoor heat exchanger 2 to exchange heat with the outside air to form a medium-temperature high-pressure refrigerant. The refrigerant discharged from the outdoor heat exchanger 2 expands into a gas-liquid mixed state through the throttling element 4. The gas-liquid mixed state refrigerant Enter the flash evaporator 3 from the first interface 30 for gas-liquid separation, and the liquid refrigerant discharged from the third interface 32 enters the third pipe 13, and then this part of the liquid refrigerant enters the indoor heat exchanger 6 for evaporation and heat absorption In order to lower the indoor temperature, the low-temperature and low-pressure refrigerant discharged from the indoor heat exchanger 6 enters the first pipe 9 through the fourth valve port D and the second valve port B in sequence, and is discharged from the first pipe 9 into the compressor 1 Return to the air port 11 to return to the compressor 1, the gaseous refrigerant is discharged from the second interface 31 and enters the fourth pipe 14, and then the gaseous refrigerant enters the electric control heat exchanger 5 to absorb heat to cool the electric control heat exchanger 5. Further cooling the frequency conversion module, the controller 8 makes the refrigerant discharged from the electronically controlled heat exchanger 5 return to the compressor 1 from the air return port 11 of the compressor 1, thereby completing the refrigeration cycle. Wherein, when the controller 8 is a one-way valve or a solenoid valve, the one-way valve or solenoid valve is in an open state at this time, and when the controller 8 is an electronic expansion valve, the electronic expansion valve is fully opened or opened to a maximum opening state.

When the cooling and heating air conditioner 200 needs to perform heating work, the first valve port A of the four-way valve 7 communicates with the fourth valve port D, and the second valve port B communicates with the third valve port C. The high-temperature and high-pressure refrigerant discharged from the exhaust port 10 enters the third pipe 13 through the first valve port A and the fourth valve port D in sequence. At this time, there are two situations. One situation is as shown in Figure 2 and As shown in Figure 3, one end of the fourth pipeline 14 communicates with a section of the third pipeline 13 between the indoor heat exchanger 6 and the fourth valve port D, and the controller 8 is arranged adjacent to the outlet of the electric control heat exchanger 5, At this time, by closing the controller 8, the fourth pipeline 14 is in a closed state, as shown by the dotted arrow in Figure 2 and Figure 3, all the high-temperature and high-pressure refrigerant in the third pipeline 13 enters the indoor heat exchanger 6 to communicate with the indoor heat exchanger 6. The air performs heat exchange to increase the indoor temperature, and then the medium-temperature and high-pressure refrigerant discharged from the indoor heat exchanger 6 enters the flash evaporator 3 through the third interface 32. At this time, the flash evaporator 3 does not perform gas-liquid separation on the medium-temperature and high-pressure refrigerant entering it. , the medium-temperature and high-pressure refrigerant enters the throttling element 4 after passing through the flash evaporator 3 for throttling to become a low-temperature and low-pressure refrigerant, and the low-temperature and low-pressure refrigerant enters the outdoor heat exchanger 2 to exchange heat with the outside air, and then from The refrigerant discharged from the outdoor heat exchanger 2 enters the first pipe 9 through the third valve port C and the second valve port B of the four-way valve 7 in sequence, and finally the refrigerant flows back to the compressor 1 from the air return port 11 of the compressor 1 , complete the heating cycle.

Another situation: as shown in Figure 4, one end of the fourth pipeline 14 communicates with the first pipeline 9, and the controller 8 is arranged adjacent to the inlet of the electric control heat exchanger 5, taking the controller as an example of a solenoid valve or an electronic expansion valve To illustrate, at this time, by making the electromagnetic valve or the electronic expansion valve open to a small opening, the fourth pipeline 14 is in an open state, as shown by the dotted arrow in Figure 4, all the high-temperature and high-pressure refrigerant in the third pipeline 13 enters the room The heat exchanger 6 exchanges heat with the indoor air to increase the indoor temperature, and then the medium-temperature and high-pressure refrigerant discharged from the indoor heat exchanger 6 enters the flash evaporator 3 from the third interface 32. The medium-temperature and high-pressure refrigerant undergoes gas-liquid separation, and a part of the refrigerant is discharged from the first interface 30 and enters the throttling element 4 for throttling to become a low-temperature and low-pressure refrigerant. The low-temperature and low-pressure refrigerant enters the outdoor heat exchanger 2 to Exchanging heat with the outside air, the refrigerant discharged from the outdoor heat exchanger 2 enters the first pipe 9 through the third valve port C and the second valve port B of the four-way valve 7 in sequence, and the other part of the refrigerant passes through the second port 31 It is discharged into the fourth pipeline 14, and then enters the electric control heat exchanger 5 to absorb heat, and another part of the refrigerant discharged from the electric control heat exchanger 5 enters the first pipeline 9 to be compatible with the outdoor heat exchanger 2. A part of the refrigerant discharged and entered into the first pipeline 9 is mixed, and finally the mixed refrigerant flows back into the compressor 1 from the air return port 11 of the compressor 1 to complete the heating cycle. When one end of the fourth pipe 14 is directly connected to the air return port 11 of the compressor 1, a part of the refrigerant discharged from the outdoor heat exchanger 2 and another part of the refrigerant discharged from the electric control heat exchanger 5 are directly connected to the air return port of the compressor 1. 11 flows back to compressor 1 to complete the heating cycle. At this time, by absorbing the heat of the electronically controlled heat exchanger 5, the heating capacity of the air conditioner can be increased.

According to the heating and cooling air conditioner 200 of the embodiment of the present invention, in the cooling state, the refrigerant in the gas-liquid mixed state is separated into gas and liquid by using the flash evaporator 3, so that the refrigerant entering the indoor heat exchanger 6 is a liquid refrigerant. The liquid refrigerant can be evenly distributed in each flow path of the indoor heat exchanger 6, which improves the heat exchange efficiency of the indoor heat exchanger 6 and avoids the phenomenon of condensation water. Refrigerant, which can avoid the excessive temperature difference between the surface of the electronically controlled heat exchanger 5 and the frequency conversion module due to the continuous evaporation and heat absorption of the refrigerant, thereby avoiding the generation of condensed water in the electronically controlled control system and ensuring the service life and use of the electronically controlled control system It is safe and prolongs the service life of the heating and cooling air conditioner 200.

According to some embodiments of the present invention, a metal heat conducting plate is provided between the frequency conversion module and the electric control heat exchanger 5 . Thereby further ensuring sufficient heat exchange between the frequency conversion module and the electronically controlled heat exchanger 5 . Of course, the present invention is not limited thereto, and the frequency conversion module and the electronically controlled heat exchanger 5 may be in direct contact.

Other configurations of the cooling-only air conditioner 100 and heating/cooling air conditioner 200 according to the embodiment of the present invention, such as electric control boxes, and operations are known to those skilled in the art, and will not be described in detail here.

In the description of this specification, references to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" are intended to mean that the implementation A specific feature, structure, material, or characteristic described by an embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the invention is defined by the claims and their equivalents.

Claims (10)

1. a single cold type air-conditioner, including compressor, outdoor heat exchanger, automatically controlled control system and indoor heat exchanger, described compressor is provided with air vent and gas returning port；The entrance of described outdoor heat exchanger connects with the air vent of described compressor；Described automatically controlled control system includes frequency-variable module and automatically controlled heat exchanger；It is characterized in that, also including flash vessel, described flash vessel is provided with first interface, the second interface and the 3rd interface, is connected by restricting element between outlet and the first interface of described flash vessel of described outdoor heat exchanger；

The entrance of described automatically controlled heat exchanger and described second orifice, the outlet of described automatically controlled heat exchanger connects with the gas returning port of described compressor；

The entrance of described indoor heat exchanger and described 3rd orifice, the outlet of described indoor heat exchanger connects with the gas returning port of described compressor.

2. single cold type air-conditioner according to claim 1, it is characterised in that described restricting element is capillary tube or electric expansion valve.

3. single cold type air-conditioner according to claim 1, it is characterised in that be provided with metal guide hot plate between described frequency-variable module and described automatically controlled heat exchanger.

4. a heating and air conditioner, including compressor, cross valve, outdoor heat exchanger, restricting element, indoor heat exchanger and automatically controlled control system, described compressor is provided with air vent and gas returning port；Described automatically controlled control system includes frequency-variable module and automatically controlled heat exchanger, it is characterised in that also include flash vessel；Described cross valve is provided with the first valve port, the second valve port, the 3rd valve port and the 4th valve port, and described first valve port connects with described air vent, by the first pipeline communication between described second valve port and described gas returning port；

Described flash vessel is provided with first interface, the second interface and the 3rd interface, connected by second pipe between described first interface with described 3rd valve port, by the 3rd pipeline communication between described 3rd interface and described 4th valve port, by the 4th pipeline communication between described second interface and the gas returning port of described compressor；

Described outdoor heat exchanger is located on described second pipe；

Described restricting element is located on described second pipe and contiguous described first interface is arranged；

Described indoor heat exchanger is located on described 3rd pipeline；

Described automatically controlled heat exchanger is located on described 4th pipeline；

Controller, described controller is located on described 4th pipeline, so that the gaseous coolant through described 4th pipeline flow back in the gas returning port of described compressor.

5. heating and air conditioner according to claim 4, it is characterized in that, one end of described 4th pipeline connects with a section between described indoor heat exchanger and described 4th valve port of described 3rd pipeline, and the outlet of the contiguous described automatically controlled heat exchanger of described controller is arranged.

6. heating and air conditioner according to claim 5, it is characterised in that described controller is check valve, electromagnetic valve or electric expansion valve.

7. heating and air conditioner according to claim 4, it is characterised in that one end of described 4th pipeline and described first pipeline communication, the entrance of the contiguous described automatically controlled heat exchanger of described controller is arranged.

8. heating and air conditioner according to claim 7, it is characterised in that described controller is electromagnetic valve or electric expansion valve.

9. heating and air conditioner according to claim 4, it is characterised in that be provided with metal guide hot plate between described frequency-variable module and described automatically controlled heat exchanger.

10. heating and air conditioner according to claim 4, it is characterised in that described restricting element is capillary tube or electric expansion valve.