High-power cooling and heating air conditioner

Abstract

The utility model discloses a high-power cooling and heating air conditioner which comprises a compressor, a four-way valve, an indoor heat exchanger, an outdoor heat exchanger, a throttling capillary tube, a main electronic expansion valve and the like, the outdoor heat exchanger comprises fins and a heat exchange tube set, and the heat exchange tube set comprises a first branch, a second branch, a third branch and a fourth branch; the heat exchange pipes of the first branch and the fourth branch are arranged on the upper portion and the lower portion of the outdoor heat exchanger respectively, and the heat exchange pipes of the second branch and the third branch are arranged in the middle of the outdoor heat exchanger. The total length of the heat exchange tubes of the first branch and the total length of the heat exchange tubes of the fourth branch are both larger than the total length of the heat exchange tubes of the second branch and the total length of the heat exchange tubes of the third branch. Through reasonable arrangement of the heat exchange tubes in the outdoor heat exchanger, temperature distribution of the outdoor heat exchanger caused by wind speed difference between the center and the edge of the axial flow fan is avoided, ice blockage of the heat exchange tubes is prevented, and the machine is more suitable for cold areas in winter.

Description

TECHNICAL FIELD

[0001] The utility model relates to window type air conditioner technical field, concretely is a high -power cooling and heating air conditioner. BACKGROUND

[0002] Window type air conditioner generally in addition to refrigeration function still has the heating function, but the refrigeration function of current window type air conditioner is mostly not applicable to the winter colder area, such as north America, north Europe etc. The reason includes, the compressor power that general window type air conditioner uses is not enough big, is not enough to transfer enough heat from outdoor to indoor;The difference of the center and the edge wind speed of the axial flow fan of the commonly used window type air conditioner on the market makes the temperature distribution of the outdoor heat exchanger uneven, and ice blockage is easy to produce in the severe cold environment, resulting in machine failure. Therefore, in north America, north Europe etc. place, the general family needs to purchase the air conditioner of summer refrigeration and the electric heater of winter heating, and the cost is higher and is inconvenient. SUMMARY

[0003] The utility model discloses a high -power cooling and heating air conditioner can adapt to the environment of winter colder area to overcome the deficiency of prior art.

[0004] The utility model discloses a high -power cooling and heating air conditioner, including tubular flow fan, axial flow fan, compressor, four -way valve, indoor heat exchanger, outdoor heat exchanger, throttling capillary, main electronic expansion valve, flash evaporator and check solenoid valve, its characterized in that, the outdoor heat exchanger includes fin and heat exchange tube group, the heat exchange tube group includes first branch, second branch, third branch, fourth branch;The heat exchange tube of first branch is arranged on the upper portion of outdoor heat exchanger, the heat exchange tube of second branch is arranged in the middle portion of outdoor heat exchanger close to the side of axial flow fan, the heat exchange tube of third branch is arranged in the middle portion of outdoor heat exchanger away from the side of axial flow fan, the heat exchange tube of fourth branch is arranged on the lower portion of outdoor heat exchanger;The total length of the heat exchange tube of first branch and the total length of the heat exchange tube of fourth branch are all greater than the total length of the heat exchange tube of second branch and the total length of the heat exchange tube of third branch.

[0005] Further, each branch of the heat exchange tube group includes several heat exchange tubes, and the heat exchange tubes are connected at the end portions by U-shaped tubes.

[0006] Further, the outdoor heat exchanger includes an inlet / outlet liquid / gas pipeline, the inlet / outlet liquid / gas pipeline is divided into four small pipes, which are respectively connected to the inlets of the four branch pipelines of the heat exchange tube group, and the outlet / outlet liquid / gas pipeline is divided into four small pipes, which are respectively connected to the outlets of the four branch pipelines of the heat exchange tube group.

[0007] Further, the four-way valve comprises an A port, a B port, a C port and a D port, the A port is connected with a compressor air outlet, the B port is connected with an outdoor heat exchanger, the C port is connected with a compressor air return port, and the D port is connected with an indoor heat exchanger; the flash evaporator comprises an E port, an F port and a G port, the E port is connected with a throttling capillary, the F port is connected with a one-way electromagnetic valve, and the G port is connected with a compressor enthalpy increasing port.

[0008] Further, the one-way electromagnetic valve is controlled by a main control chip and is closed in air conditioner refrigeration mode and is opened in air conditioner heating mode.

[0009] Further, different power inputs are used in air conditioner refrigeration mode and air conditioner heating mode, and power input switching is realized through a relay.

[0010] The utility model has the advantages that: the utility model provides a kind of high-power cooling and heating air conditioner, the reasonable arrangement of heat exchange pipe in outdoor heat exchanger is avoided The problem of uneven temperature distribution of outdoor heat exchanger caused by the difference between the center and the edge of the axial fan speed, reduces the possibility of ice blockage of outdoor heat exchanger heat exchange pipe, makes the machine more suitable for colder areas in winter, and different power inputs are used in refrigeration and heating mode, suitable for the actual situation of two sets of power charging methods for refrigeration and heating in North America. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is an outdoor heat exchanger heat exchange pipe arrangement mode schematic view of the utility model.

[0012] Figure 2 It is a working principle diagram of the utility model.

[0013] Figure 3 It is an end structure schematic view of the outdoor heat exchanger of the utility model.

[0014] Figure 4 It is an internal structure schematic view of the utility model.

[0015] Among them, Figures 1 to 4 The correspondence between the reference signs and the component names in the drawings is as follows:

[0016] 4 cross-flow fan, 5 indoor heat exchanger, 8 axial fan, 9 compressor, 10 outdoor heat exchanger, 26 four-way valve, 27 throttling capillary, 28 main electronic expansion valve, 29 flash evaporator, 30 one-way electromagnetic valve, 31 first branch, 32 second branch, 33 third branch, 34 fourth branch, 35 liquid / gas inlet pipeline, 36 liquid / gas outlet pipeline, 37 compressor air outlet, 38 compressor air return port, 39 compressor enthalpy increasing port, refrigeration power supply, heating power supply, 42 U-shaped tube. DETAILED DESCRIPTION

[0017] The technical solutions of the present application will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments.

[0018] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0019] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0020] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0022] The following will be described with reference to Figures 1-4 A high-power cooling and heating air conditioner, comprising a cross-flow fan 4, an axial flow fan 8, a compressor 9, a four-way valve 26, an indoor heat exchanger 5, an outdoor heat exchanger 10, a throttling capillary tube 27, a main electronic expansion valve 28, a flash evaporator 29 and a one-way electromagnetic valve 30. The outdoor heat exchanger 10 comprises a fin and heat exchange tube group, the heat exchange tube group comprises a first branch 31, a second branch 32, a third branch 33 and a fourth branch 34; each branch contains several heat exchange tubes, and the heat exchange tubes are connected at the end by U-shaped tubes 42.

[0023] The heat exchange tubes of the first branch 31 are arranged at the upper part of the outdoor heat exchanger 10, the heat exchange tubes of the second branch 32 are arranged at the middle part of the outdoor heat exchanger 10 close to the side of the axial flow fan 8, the heat exchange tubes of the third branch 33 are arranged at the middle part of the outdoor heat exchanger 10 away from the side of the axial flow fan 8, and the heat exchange tubes of the fourth branch 34 are arranged at the lower part of the outdoor heat exchanger 10. The outdoor heat exchanger 10 comprises an inlet liquid / gas pipeline 35 and an outlet liquid / gas pipeline 36. The inlet liquid / gas pipeline 35 is divided into four small pipelines which are connected to the inlets of the four branch pipelines of the heat exchange tube group respectively, and the outlet liquid / gas pipeline 36 is divided into four small pipelines which are connected to the outlets of the four branch pipelines of the heat exchange tube group respectively. The total length of the heat exchange tubes of the first branch 31 and the total length of the heat exchange tubes of the fourth branch 34 are both greater than the total length of the heat exchange tubes of the second branch 32 and the total length of the heat exchange tubes of the third branch 33. In this embodiment, the number of the heat exchange tubes of the first branch 31 and the fourth branch 34 is 12, and the number of the heat exchange tubes of the second branch 32 and the third branch 33 is 10.

[0024] In the air conditioning heating mode, the outdoor heat exchanger 10 acts as an evaporator, the refrigerant absorbs heat, and the heat exchange tubes exchange heat with the airflow blown by the axial flow fan 8. Because the central wind speed of the axial flow fan 8 is high and the edge wind speed is low, the temperature distribution of the conventional heat exchanger is not uniform, and the edge of the heat exchanger is prone to ice blockage in cold environments. However, in this embodiment, more heat exchange tubes are used in the upper and lower branches of the outdoor heat exchanger 10, which increases the branch heat exchange area and improves the heat exchange efficiency of the upper and lower branches, making the temperature distribution of the outdoor heat exchanger 10 more uniform and reducing the possibility of ice blockage. In the second branch 32 and the third branch 33, based on the fact that the third branch 33 is closer to the fan central axis than the second branch 32, the wind speed is higher, therefore, the third branch 33 arranges more tube segments on the outside, i.e. away from the fan blades, while the second branch 32 arranges relatively more tube segments on the inside, so that the heat exchange efficiency of the second branch 32 and the third branch 33 is approximately the same.

[0025] The four-way valve 26 comprises A port, B port, C port and D port. The A port is connected to the outlet 37 of the compressor 9, the B port is connected to the outdoor heat exchanger 10, the C port is connected to the return gas port 38 of the compressor, and the D port is connected to the indoor heat exchanger 5. The flash evaporator 29 comprises E port, F port and G port. The E port is connected to the throttling capillary tube 27, the F port is connected to the one-way electromagnetic valve 30, and the G port is connected to the compressor enthalpy increase port 39. The one-way electromagnetic valve 30 is controlled by the main control chip and is closed in the air conditioning refrigeration mode and opened in the heating mode. The air conditioning refrigeration mode uses refrigeration power input, the heating mode uses heating power input, and the power input switching is realized through a relay.

[0026] Specifically, when the air conditioner is in the cooling mode, using the cooling power input, the one-way electromagnetic valve 30 is closed, the A, B ports of the four-way valve 26 are connected, and the C, D ports are connected; the refrigerant is compressed into high-temperature and high-pressure gas by the compressor 9, discharged from the gas outlet 37, passes through the AB section of the four-way valve 26, passes through the outdoor heat exchanger 10, releases heat, and condenses into high-temperature and high-pressure liquid; the high-temperature and high-pressure liquid passes through the throttling capillary 27 to preliminarily reduce the pressure, passes through the flash evaporator 29, and then passes through the main electronic expansion valve 28 to become a low-temperature and low-pressure gas-liquid mixture; the gas-liquid mixture passes through the indoor heat exchanger 5, absorbs heat, evaporates into gas, and returns to the gas inlet 38 of the compressor 9 through the DC section of the four-way valve 26, and the cycle is completed.

[0027] When the air conditioner is in the heating mode, using the heating power input, the one-way electromagnetic valve 30 is opened, the A, D ports of the four-way valve 26 are connected, and the B, C ports are connected; the refrigerant is compressed into high-temperature and high-pressure gas by the compressor 9, discharged from the gas outlet 37, passes through the AD section of the four-way valve 26, passes through the indoor heat exchanger 5, releases heat, and condenses into high-temperature and high-pressure liquid; the high-temperature and high-pressure liquid passes through the main electronic expansion valve 28 to preliminarily reduce the pressure, enters the flash evaporator 29, and divides into the main loop and the auxiliary loop; the liquid-phase refrigerant is discharged from the E port of the flash evaporator 29, enters the throttling capillary 27 through the main loop, becomes a low-temperature and low-pressure gas-liquid mixture, passes through the indoor heat exchanger 5, absorbs heat, evaporates into gas, and returns to the gas inlet 38 of the compressor 9 through the DC section of the four-way valve 26, and the cycle is completed; the gas-phase refrigerant is discharged from the F port of the flash evaporator 29, passes through the auxiliary loop through the one-way electromagnetic valve 30, and enters the enthalpy-increasing port 39 of the compressor 9, and the cycle is completed.

[0028] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-power cooling and heating air conditioner comprising a cross-flow fan, an axial-flow fan, a compressor, a four-way valve, an indoor heat exchanger, an outdoor heat exchanger, a throttling capillary, a main electronic expansion valve, a flash evaporator, and a one-way electromagnetic valve, characterized in that, The outdoor heat exchanger comprises a fin and a heat exchange tube group, the heat exchange tube group comprises a first branch, a second branch, a third branch and a fourth branch; the heat exchange tubes of the first branch are arranged at the upper part of the outdoor heat exchanger, the heat exchange tubes of the second branch are arranged at the middle part of the outdoor heat exchanger close to the side of the axial flow fan, the heat exchange tubes of the third branch are arranged at the middle part of the outdoor heat exchanger away from the side of the axial flow fan, and the heat exchange tubes of the fourth branch are arranged at the lower part of the outdoor heat exchanger; the total length of the heat exchange tubes of the first branch and the total length of the heat exchange tubes of the fourth branch are both greater than the total length of the heat exchange tubes of the second branch and the total length of the heat exchange tubes of the third branch.

2. The high-power cooling and heating air conditioner according to claim 1, characterized in that, Each branch of the heat exchange tube group comprises several heat exchange tubes, and the heat exchange tubes are connected at the ends by U-shaped tubes.

3. The high-power cooling and heating air conditioner according to claim 1, characterized in that, The outdoor heat exchanger comprises an inlet liquid / gas pipeline and an outlet liquid / gas pipeline, the inlet liquid / gas pipeline is divided into four small pipelines which are connected to the inlets of the four branch pipelines of the heat exchange tube group, and the outlet liquid / gas pipeline is divided into four small pipelines which are connected to the outlets of the four branch pipelines of the heat exchange tube group.

4. The high-power cooling and heating air conditioner according to claim 1, characterized in that, The four-way valve comprises an A port, a B port, a C port and a D port, the A port is connected to the outlet of the compressor, the B port is connected to the outdoor heat exchanger, the C port is connected to the return gas port of the compressor, and the D port is connected to the indoor heat exchanger; the flash evaporator comprises an E port, an F port and a G port, the E port is connected to a throttling capillary, the F port is connected to a one-way electromagnetic valve, and the G port is connected to the enthalpy increasing port of the compressor.

5. A large power cooling and heating air conditioner according to claim 4, characterized in that, The one-way electromagnetic valve is controlled by a main control chip, and is closed in the air conditioner cooling mode and opened in the heating mode.

6. The high-power cooling and heating air conditioner according to claim 1, characterized in that, Different power inputs are used in the air conditioner cooling mode and the heating mode, and the switching of the power input is realized by a relay.

Images