CN217058019U - Outdoor heat exchanger and air source heat pump system based on compressor exhaust anti-icing defrosting - Google Patents
Outdoor heat exchanger and air source heat pump system based on compressor exhaust anti-icing defrosting Download PDFInfo
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- CN217058019U CN217058019U CN202220160939.4U CN202220160939U CN217058019U CN 217058019 U CN217058019 U CN 217058019U CN 202220160939 U CN202220160939 U CN 202220160939U CN 217058019 U CN217058019 U CN 217058019U
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Abstract
The utility model provides an outdoor heat exchanger and air source heat pump system based on compressor exhaust anti-icing defrosting, including main heat exchanger, defrosting heat exchanger, the defrosting heat exchanger arranges in main heat exchanger below, and main heat exchanger constitutes outdoor heat exchanger with the defrosting heat exchanger, the one end of defrosting heat exchanger and the export intercommunication of compressor, the other end and indoor heat exchanger intercommunication, main heat exchanger one end and indoor heat exchanger intercommunication, the other end and compressor entry intercommunication. The utility model discloses beneficial effect: the high-temperature and high-pressure working medium is condensed and released in the defrosting heat exchanger, and the defrosting heat exchanger is arranged at the bottom and the outer side face of the outdoor heat exchanger, which are most seriously frosted and frozen, so that the anti-icing and anti-frosting effects can be achieved.
Description
Technical Field
The utility model belongs to the technical field of the air conditioner defrosting, especially, relate to an outdoor heat exchanger and air source heat pump system based on defrosting is prevented icing in compressor exhaust.
Background
The air source heat pump is widely applied to daily heating and domestic hot water systems, and with the popularization and the use of the air source heat pump technology, the fact that a heat exchanger on the outer side of the system is extremely easy to frost in a heating mode, particularly under the condition that the external environment temperature is low, the normal operation and the use of the air source heat pump system are seriously influenced, and the parts of the system are seriously damaged due to the icing of the outdoor heat exchanger. The current mainstream defrosting method is air exhaust defrosting, in the heating process, the frosting at the bottom and one side of the air inlet of the outdoor heat exchanger is the most serious, part of melted ice slag and frost water can flow into the bottom in the defrosting process, and the freezing damage can occur to the ultralow temperature heat supply heat pump, so that the defrosting of the bottom of the outdoor heat exchanger is the main problem of how to defrost, prevent frost and prevent ice at present.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing an outdoor heat exchanger and air source heat pump system based on compressor exhaust anti-icing defrosting to solve the serious problem of frosting in outdoor heat exchanger bottom.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
the utility model provides an aspect provides an outdoor heat exchanger based on compressor is discharged and is prevented ice defrosting, including main heat exchanger, defrosting heat exchanger, the defrosting heat exchanger is installed in main heat exchanger below, the one end of defrosting heat exchanger and the export intercommunication of compressor, the other end and indoor heat exchanger intercommunication, main heat exchanger one end and indoor heat exchanger intercommunication, the other end and compressor entry intercommunication.
Furthermore, the defrosting heat exchanger is a finned heat exchanger, the cross section of the defrosting heat exchanger is inverted L-shaped, the defrosting heat exchanger comprises a vertical part and a horizontal part, the horizontal part is located below the main heat exchanger, and the vertical part is located on one side of air inlet of the main heat exchanger.
The utility model discloses another aspect provides an air source heat pump system based on compressor exhaust anti-icing defrosting, including compressor, indoor heat exchanger, cross valve and the above-mentioned outdoor heat exchanger based on compressor exhaust anti-icing defrosting on the one hand, outdoor heat exchanger includes main heat exchanger, defrosting heat exchanger, the compressor export communicates with defrosting heat exchanger import and cross valve respectively, main heat exchanger import and export communicate with cross valve and indoor heat exchanger import respectively, the export of defrosting heat exchanger and outdoor heat exchanger export intercommunication, the export of indoor heat exchanger and cross valve intercommunication, the import and the cross valve intercommunication of compressor; and a throttling device is arranged between the outlet of the outdoor heat exchanger and the inlet of the indoor heat exchanger.
Furthermore, an outlet of the defrosting heat exchanger is communicated with an outlet of the outdoor heat exchanger through a first liquid separator, an inlet of the defrosting heat exchanger is communicated with an outlet of the compressor through a second liquid separator, and the second liquid separator is communicated with an outlet of the outdoor heat exchanger through a capillary tube.
Further, the inlet of the compressor is communicated with the four-way valve through a gas-liquid separation device.
Compared with the prior art, an air source heat pump system based on compressor exhaust anti-icing defrosting has following beneficial effect:
(1) outdoor heat exchanger based on compressor exhaust anti-icing defrosting, the highly compressed working medium of high temperature that the compressor compression goes out condenses exothermically in the defrosting heat exchanger, the defrosting heat exchanger frosts the most serious bottom at outdoor heat exchanger, can play the effect of anti-icing frost prevention, quick deicing.
(2) A air source heat pump system based on compressor exhaust anti-icing defrosting, the defrosting in-process main heat exchanger goes up the bottom that ice and frost melt and flow into outdoor heat exchanger, the defrosting load that leads to outdoor heat exchanger bottom is the biggest, after the main heat exchanger defrosting, four-way valve operating system switches over for indoor flow that heats, in indoor flow that heats, the defrosting heat exchanger lasts exothermic defrosting operation, defrosting efficiency has been improved and effectively frost prevention anti-icing, the defrosting water of upper portion coil pipe flows down defrosting heat exchanger surface back from upper portion simultaneously, also can be lasted heat evaporation to dryness. The continuous operation of the system is ensured. The defrosting process can be carried out by changing the communication form of the four-way valve, and the operation is simple and convenient.
Drawings
The accompanying drawings, which form a part of the present disclosure, are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and together with the description serve to explain the present disclosure. In the drawings:
fig. 1 is a schematic structural diagram of a system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an outdoor heat exchanger according to an embodiment of the present invention;
fig. 3 is a schematic view of a heating process of the system according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a defrosting process of the system according to the embodiment of the present invention.
Description of the reference numerals:
1-outdoor heat exchanger; 2-indoor heat exchanger; 3-a compressor; 4-a four-way valve; 5-a gas-liquid separation device; 6-a capillary tube; 7-a throttling device; 8-a low-voltage controller; 9-a temperature controller; 10-a second high voltage controller; 11-a first high voltage controller; 12-a first temperature sensor; 13-a second temperature sensor; 14-a second liquid separator; 15-a first liquid separator; 16-pipeline one; 17-line two; 18-line three; 19-line four; 20-pipeline five; 21-pipeline six; 101-a primary heat exchanger; 102-a defrost heat exchanger; 1021-a vertical section; 1022-horizontal section.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The first embodiment is as follows:
as shown in fig. 2, the utility model provides an outdoor heat exchanger 1 based on compressor 3 exhausts anti-icing defrosting, including main heat exchanger 101, defrosting heat exchanger 102 installs in main heat exchanger 101 below, and the one end of defrosting heat exchanger 102 and compressor 3's export intercommunication, the other end and indoor heat exchanger 2 intercommunication, main heat exchanger 101 one end and indoor heat exchanger 2 intercommunication, the other end and compressor 3 entry intercommunication. The defrosting heat exchanger 102 is a finned heat exchanger, the cross section of the defrosting heat exchanger 102 is in an inverted L shape, the defrosting heat exchanger 102 comprises a vertical part 1021 and a horizontal part 1022, the horizontal part 1022 is located below the main heat exchanger 101, and the vertical part 1021 is located on one side of the main heat exchanger 101, which is close to the ventilation opening. One part of high-temperature and high-pressure working medium compressed by the compressor 3 enters the indoor heat exchanger 2 for heat dissipation, the other small part of the high-temperature and high-pressure working medium enters the defrosting heat exchanger 102 for heat dissipation, the two parts of the high-temperature and high-pressure working medium are evaporated and absorb heat in the main heat exchanger 101 to form low-temperature and low-pressure gaseous working medium which flows into the compressor 3, the circulation is performed to heat the indoor space, the frosting is most serious on the air inlet side of the main heat exchanger 101 and the bottom of the main heat exchanger 101 in the process, and the defrosting heat exchanger 102 dissipates heat at the position to play a role of frost prevention.
Example two:
as shown in fig. 1 and fig. 2, another aspect of the present invention provides an air source heat pump system based on compressor 3 for exhausting, anti-icing and defrosting, comprising a compressor 3, an indoor heat exchanger 2, the four-way valve 4 and the outdoor heat exchanger 1 based on the compressor 3 to discharge the air, prevent the ice and defrost in the above embodiment one, the outdoor heat exchanger 1 includes the main heat exchanger 101, defrost the heat exchanger 102, the outlet of the compressor 3 communicates with inlet of the defrost heat exchanger 102 through the six 21 pipelines, the outlet of the compressor 3 communicates with c port of the four-way valve 4 through the four 19 pipelines, the inlet of the main heat exchanger 101 communicates with d port of the four-way valve 4 through the five 20 pipelines, the outlet of the main heat exchanger 101 communicates with the inlet of the indoor heat exchanger 2 through the one 16 pipeline, the outlet of the defrost heat exchanger 102 communicates with the one 16 pipeline, the outlet of the indoor heat exchanger 2 communicates with b port of the four-way valve 4 through the two 17 pipeline, the inlet of the compressor 3 communicates with a port of the four-way valve 4; a throttling device 7 is arranged between the outlet of the outdoor heat exchanger 1 and the inlet of the indoor heat exchanger 2. The outlet of the defrosting heat exchanger 102 is communicated with the outlet of the outdoor heat exchanger 1 through a second liquid separator 14, the inlet of the defrosting heat exchanger 102 is communicated with the outlet of the compressor 3 through a first liquid separator 15, and the second liquid separator 14 is communicated with a first pipeline 16 through a capillary tube 6. The inlet of the compressor 3 is communicated with the four-way valve 4 through a gas-liquid separation device 5, and the gas-liquid separation device 5 is preferably but not limited to an existing gas-liquid separator, and the gas-liquid separator is used for processing gas containing a small amount of condensate to realize condensate recovery or gas phase purification. The refrigerant can enter a gas-liquid separator for further gas-liquid separation and then enter the compressor 3, so that the smooth operation of the system is guaranteed. After a liquid refrigerant with a certain supercooling degree enters the capillary tube 6, pressure state change can occur along the flowing direction, the supercooled liquid is changed into saturated liquid with corresponding pressure along with the gradual reduction of the pressure, the saturated liquid is called as a liquid phase section, and the pressure of the saturated liquid is not large and is changed linearly. The first bubble appears from the capillary 6 to the end of the capillary 6, which is called as an air flow coexisting section, the content of saturated vapor of the first bubble gradually increases along the flow direction, and the pressure changes in a nonlinear manner, so that the smooth operation of the system is guaranteed.
As shown in fig. 3, the indoor heating process is as follows, the arrow in the figure represents the flow direction of the working medium, the port b of the four-way valve 4 is communicated with the port c, the port a is communicated with the port d, one part of the high-temperature and high-pressure gaseous working medium compressed by the compressor 3 enters the indoor heat exchanger 2 for heat dissipation, the other small part of the high-temperature and high-pressure gaseous working medium compressed by the compressor 3 enters the defrosting heat exchanger 102 for heat dissipation, the two parts of the low-temperature and low-pressure liquid working medium after being cooled are evaporated and absorbed in the main heat exchanger 101 to form low-temperature and low-pressure gaseous working medium, the low-temperature and low-pressure gaseous working medium flows into the compressor 3, the indoor heating is performed in a circulating manner, the frosting on the air inlet side of the main heat exchanger 101 and the bottom of the main heat exchanger 101 is the most serious, and the defrosting heat exchanger 102 performs heat dissipation at the position to perform the function of frosting prevention.
As shown in fig. 4, the defrosting process is as follows, the port d and the port c of the four-way valve 4 are communicated, the port a and the port b are communicated, one part of the high-temperature and high-pressure working medium compressed by the compressor 3 enters the main heat exchanger 101 for heat dissipation, the other part enters the defrosting heat exchanger 102 for heat dissipation, the two parts of cooled working media are evaporated and absorb heat in the indoor heat exchanger 2 to form low-temperature and low-pressure gaseous working media which flow into the compressor 3, so that the defrosting operation is circularly carried out on the outdoor heat exchanger 1, in the process, ice and frost on the main heat exchanger 101 are melted and flow into the bottom of the outdoor heat exchanger 1, so that the defrosting load at the bottom of the outdoor heat exchanger 1 is the largest, after the defrosting of the main heat exchanger 101 is finished, the four-way valve 4 actuating system is switched to an indoor heating flow, in the indoor heating process, the defrosting heat exchanger 102 continuously releases heat to defrost, so that the defrosting efficiency and the defrosting effect are improved, and the reliable operation of the system is ensured. The defrosting process can be performed by changing the communication form of the four-way valve 4, and the operation is simple and convenient.
The main heat exchanger 101 is provided with a second temperature sensor 13, and the second temperature sensor 13 is electrically connected with the controller and used for monitoring the temperature of the outdoor heat exchanger 1; a first temperature sensor 12 is arranged on the indoor heat exchanger 2, and the first temperature sensor 12 is electrically connected with the controller and used for monitoring the temperature of the indoor heat exchanger 2; a low-pressure controller 8 is arranged between the gas-liquid separator and the inlet of the compressor 3, the low-pressure controller 8 is electrically connected with the control, and the low-pressure controller 8 is used for monitoring the pressure of the cooled working medium; a first high-pressure controller 11 is arranged between the throttling valve and the outlet of the heat exchanger, the first high-pressure controller 11 is electrically connected with the controller, and the first high-pressure controller 11 is used for monitoring the pressure of the working medium; and a temperature controller and a second high-pressure controller 10 are arranged on the third pipeline 18, the temperature controller 9 and the second high-pressure controller 10 are both electrically connected with the controllers, the temperature controller 9 is used for monitoring the temperature of the high-temperature high-pressure working medium compressed by the compressor 3, and the second high-pressure controller 10 is used for monitoring the pressure of the high-temperature high-pressure working medium compressed by the compressor 3.
The first high-voltage controller 11 and the second high-voltage controller 10 are both a diaphragm type pressure switch, but not limited to the existing, the four-way valve 4 is a solenoid type four-way valve 4, but not limited to the existing, the controller is a PLC controller, the PLC controller controls the solenoid type four-way valve 4 and the compressor 3 to operate according to the prior art by collecting the temperature control of the first temperature sensor 12 and the second temperature sensor 13, and the diaphragm type pressure switch, the solenoid type four-way valve 4, the first temperature sensor 12, the second temperature sensor 13, the compressor 3, the solenoid type four-way valve 4, and the temperature controller 9 are all the specific structures of the prior art and the connection forms thereof, which are not described herein again.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. Outdoor heat exchanger based on compressor exhaust anti-icing defrosting, its characterized in that: the defrosting heat exchanger (102) is installed below the main heat exchanger (101), one end of the defrosting heat exchanger (102) is communicated with an outlet of the compressor (3), the other end of the defrosting heat exchanger is communicated with the indoor heat exchanger (2), one end of the main heat exchanger (101) is communicated with the indoor heat exchanger (2), and the other end of the main heat exchanger is communicated with an inlet of the compressor (3).
2. The outdoor heat exchanger based on compressor discharge anti-icing and defrosting of claim 1, characterized in that: the defrosting heat exchanger (102) is a finned heat exchanger, the cross section of the defrosting heat exchanger (102) is in an inverted L shape, the defrosting heat exchanger (102) comprises a vertical part (1021) and a horizontal part (1022), the horizontal part (1022) is located below the main heat exchanger (101), and the vertical part (1021) is located on one side of air inlet of the main heat exchanger (101).
3. Air source heat pump system based on compressor exhaust anti-icing defrosting, its characterized in that: the outdoor heat exchanger (1) comprises a compressor (3), an indoor heat exchanger (2), a four-way valve (4) and any one of the outdoor heat exchanger (1) of claims 1 to 2, wherein the outdoor heat exchanger (1) comprises a main heat exchanger (101) and a defrosting heat exchanger (102), the outlet of the compressor (3) is respectively communicated with the inlet of the defrosting heat exchanger (102) and the four-way valve (4), the inlet and the outlet of the main heat exchanger (101) are respectively communicated with the inlet of the four-way valve (4) and the inlet of the indoor heat exchanger (2), the outlet of the defrosting heat exchanger (102) is communicated with the outlet of the outdoor heat exchanger (1), the outlet of the indoor heat exchanger (2) is communicated with the four-way valve (4), and the inlet of the compressor (3) is communicated with the four-way valve (4); and a throttling device (7) is arranged between the outlet of the outdoor heat exchanger (1) and the inlet of the indoor heat exchanger (2).
4. The compressor discharge anti-icing and defrost based air source heat pump system of claim 3 wherein: an outlet of the defrosting heat exchanger (102) is communicated with an outlet of the outdoor heat exchanger (1) through a second liquid distributor (14), an inlet of the defrosting heat exchanger (102) is communicated with an outlet of the compressor (3) through a first liquid distributor (15), and the second liquid distributor (14) is communicated with an outlet of the outdoor heat exchanger (1) through a capillary tube (6).
5. The compressor discharge anti-icing defrost based air source heat pump system as recited in claim 3 wherein: and the inlet of the compressor (3) is communicated with the four-way valve (4) through a gas-liquid separation device (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220160939.4U CN217058019U (en) | 2022-01-20 | 2022-01-20 | Outdoor heat exchanger and air source heat pump system based on compressor exhaust anti-icing defrosting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220160939.4U CN217058019U (en) | 2022-01-20 | 2022-01-20 | Outdoor heat exchanger and air source heat pump system based on compressor exhaust anti-icing defrosting |
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| Publication Number | Publication Date |
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| CN217058019U true CN217058019U (en) | 2022-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220160939.4U Active CN217058019U (en) | 2022-01-20 | 2022-01-20 | Outdoor heat exchanger and air source heat pump system based on compressor exhaust anti-icing defrosting |
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| CN (1) | CN217058019U (en) |
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- 2022-01-20 CN CN202220160939.4U patent/CN217058019U/en active Active
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