CN210089177U - Air source heat pump unit of incessant heat supply during defrosting - Google Patents
Air source heat pump unit of incessant heat supply during defrosting Download PDFInfo
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- CN210089177U CN210089177U CN201920929462.XU CN201920929462U CN210089177U CN 210089177 U CN210089177 U CN 210089177U CN 201920929462 U CN201920929462 U CN 201920929462U CN 210089177 U CN210089177 U CN 210089177U
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Abstract
The utility model discloses an air source heat pump set of incessant heat supply during defrosting, it includes the cross valve, sets up at indoor first heat exchanger and sets up at outdoor heat exchanger group, the setting comprises second heat exchanger and third heat exchanger at outdoor heat exchanger group, the first interface of cross valve is connected with the one end opening of first heat exchanger, the other end opening of first heat exchanger is connected with second heat exchanger and third heat exchanger respectively. The utility model discloses a setting of the control valve of outdoor two heat exchangers and control its route can make the unit cross valve direction unchangeable in the defrosting process, but also sustainable to indoor heating to keep the high-efficient operation of unit, because of a series of problems that reverse circulation brought when avoiding current defrosting simultaneously.
Description
Technical Field
The utility model relates to an air source heat pump unit of incessant heat supply during defrosting.
Background
When the air conditioner operates in heating, because outdoor temperature is low, the surface of the evaporator of the air conditioner can gradually frost, along with the thickening of a frost layer, the air outlet temperature and the heating capacity of an indoor condenser are gradually reduced, and defrosting is needed at the moment. The common defrosting modes of the air conditioner mainly comprise four-way valve reversing defrosting, hot gas bypass defrosting and electric heating defrosting.
The four-way valve is directly adopted for reversing defrosting, other defrosting devices are not required to be added in the system, the mode is simple, the heat required by reversing defrosting of the four-way valve is the sum of four parts of heat absorption capacity of an indoor environment, heat storage capacity of an indoor heat exchanger, power consumption of a compressor and heat storage capacity of the compressor, and an indoor heat exchanger fan stops running due to human comfort. Because heat is required to be taken from an indoor heat exchanger and an indoor environment during defrosting, the problems that the defrosting time is long, hot air cannot be blown out of an indoor unit for a long time after heating is recovered, and the reversing of a four-way valve causes large airflow sound when defrosting is started and finished exist.
The hot gas bypass circulation avoids the interconversion of the refrigerating circulation and the heating circulation of the unit in the whole defrosting circulation, and the air suction and exhaust temperature of the compressor is basically kept stable, so that the potential safety hazard of reversing reverse circulation defrosting of the four-way valve is solved. When defrosting is carried out, the indoor heat exchanger fan and the outdoor heat exchanger fan stop running, and the heat sources for defrosting are two parts of power consumed by the compressor and heat storage capacity of the shell of the compressor.
The electric heating defrosting heats the outdoor machine heat exchanger to melt the frost layer by directly adopting electric energy, and the heat source of defrosting is direct power consumption.
SUMMERY OF THE UTILITY MODEL
The invention of the utility model aims to: in view of the problems, the air source heat pump unit with the double outdoor units is provided, and heat can be continuously supplied to the indoor space during defrosting.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an air source heat pump set of incessant heat supply during defrosting, includes the cross valve, sets up at indoor first heat exchanger and sets up at outdoor heat exchanger group, its characterized in that: the heat exchanger group arranged outdoors consists of a second heat exchanger and a third heat exchanger, a first interface of the four-way valve is connected with an opening at one end of the first heat exchanger, and an opening at the other end of the first heat exchanger is respectively connected with the second heat exchanger and the third heat exchanger;
an opening at the other end of the first heat exchanger is connected with a first interface of a first three-way valve, a second interface of the first three-way valve is connected with an opening at one end of a third heat exchanger, a third interface of the first three-way valve is connected with a first interface of a four-way valve, an opening at the other end of the third heat exchanger is connected with a second interface of a second three-way valve, a first interface of the second three-way valve is connected with an opening at the other end of the first heat exchanger, and a third interface of the second three-way valve is connected with a third interface of the four-way valve;
the heat exchanger comprises a first heat exchanger, a second heat exchanger, a fourth heat exchanger and a fourth heat exchanger, wherein an opening at the other end of the first heat exchanger is connected with a first interface of the third three valve, a second interface of the third three valve is connected with an opening at one end of the second heat exchanger, a third interface of the third three valve is connected with an opening at the other end of the first heat exchanger, an opening at the other end of the second heat exchanger is connected with a second interface of the fourth three valve, a first interface of the.
Air source heat pump set of incessant heat supply during defrosting, its the second interface and the fourth interface and the compressor of cross valve are connected and are formed circulation circuit.
Air source heat pump set of incessant heat supply during defrosting, its other end opening of first heat exchanger passes through the expansion valve and is connected with second heat exchanger and third heat exchanger respectively.
The utility model discloses a setting of the control valve of outdoor two heat exchangers and control its route can make the unit cross valve direction unchangeable in the defrosting process, but also sustainable to indoor heating to keep the high-efficient operation of unit, because of a series of problems that reverse circulation brought when avoiding current defrosting simultaneously.
Drawings
Fig. 1 is a schematic view of the utility model in the normal heating condition in winter.
Fig. 2 is the utility model discloses carry out second heat exchanger defrosting operating mode schematic diagram winter.
Fig. 3 is the utility model discloses carry out third heat exchanger defrosting operating mode schematic diagram winter.
Fig. 4 is a schematic diagram of the refrigeration working condition in summer of the utility model.
Reference numerals: the heat exchanger comprises a four-way valve 1, a first heat exchanger 2, a second heat exchanger 3, a third heat exchanger 4, a first three-way valve 5, a second three-way valve 6, a third three-way valve 7, a fourth three-way valve 8, a compressor 9 and an expansion valve 10.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, an air source heat pump unit for supplying heat uninterruptedly during defrosting includes a four-way valve 1, a first heat exchanger 2 disposed indoors, and a heat exchanger set disposed outdoors, where the heat exchanger set disposed outdoors is composed of a second heat exchanger 3 and a third heat exchanger 4, a first interface of the four-way valve 1 is connected with an opening at one end of the first heat exchanger 2, a second interface and a fourth interface of the four-way valve 1 are connected with a compressor 9 to form a circulation loop, and an opening at the other end of the first heat exchanger 2 is connected with the second heat exchanger 3 and the third heat exchanger 4 through an expansion valve 10, respectively.
The other end opening of the first heat exchanger 2 is connected with a first interface of a first three-way valve 5, the second interface of the first three-way valve 5 is connected with one end opening of a third heat exchanger 4, the third interface of the first three-way valve 5 is connected with a first interface of a four-way valve 1, the other end opening of the third heat exchanger 4 is connected with a second interface of a second three-way valve 6, the first interface of the second three-way valve 6 is connected with the other end opening of the first heat exchanger 2, and the third interface of the second three-way valve 6 is connected with a third interface of the four-way valve 1.
The other end opening of first heat exchanger 2 and the first interface connection of third three-way valve 7, the second interface of third three-way valve 7 and the one end opening of second heat exchanger 3 are connected, the third interface of third three-way valve 7 and the other end opening of first heat exchanger 2 are connected, the other end opening of second heat exchanger 3 and the second interface connection of fourth three-way valve 8, the first interface of fourth three-way valve 8 and the first interface connection of cross valve 1, the third interface of fourth three-way valve 8 and the third interface connection of cross valve 1.
The utility model discloses an operation control method specifically does:
as shown in fig. 1, when the dual-chamber outdoor unit air source heat pump unit is in a normal heat supply working condition in winter, a compressor sucks low-pressure low-temperature refrigerant steam generated in a second heat exchanger and a third heat exchanger, the refrigerant enters a first heat exchanger after being adiabatically compressed, the refrigerant is cooled by the first heat exchanger and releases heat indoors under the condition of unchanged pressure, the temperature of the refrigerant is reduced, the first heat exchanger is a condenser at the moment, the refrigerant releases heat and is condensed in the first heat exchanger, the refrigerant is throttled and reduced in pressure by an expansion valve, the temperature is reduced while the pressure is reduced, a low-temperature low-pressure refrigerant is obtained, the low-temperature low-pressure refrigerant enters the second heat exchanger and the third heat exchanger to absorb heat, and then enters the compressor; wherein the dashed lines indicate that the lines are not open.
As shown in fig. 2, when the dual-chamber outdoor unit air source heat pump unit performs defrosting of the second heat exchanger in winter, the compressor sucks low-pressure low-temperature refrigerant vapor generated in the third heat exchanger, after adiabatic compression, the temperature and pressure of the refrigerant are increased, and a part of the refrigerant enters the first heat exchanger to supply heat to the indoor space through controlling the third three-way valve and the fourth three-way valve; the other part of the refrigerant is subjected to direction conversion by a third three-way valve and a fourth three-way valve of the second heat exchanger, enters the second heat exchanger for heat release and defrosting, both the first heat exchanger and the second heat exchanger are condensers, the temperature of the refrigerant in the second heat exchanger is reduced after heat release and condensation are finished, the refrigerant is converged with the refrigerant subjected to heat exchange by the first heat exchanger and then enters an expansion valve for throttling and pressure reduction, the temperature is reduced while the pressure is reduced, a low-temperature and low-pressure refrigerant is obtained, the low-temperature and low-pressure refrigerant enters the third heat exchanger for heat absorption and then enters a compressor again, and the normal heat supply working; wherein the dashed lines indicate that the lines are not open.
As shown in fig. 3, when the dual-chamber outdoor unit air source heat pump unit performs defrosting of the third heat exchanger in winter, the compressor sucks low-pressure low-temperature refrigerant vapor generated in the second heat exchanger, after adiabatic compression, the temperature and pressure of the refrigerant are increased, and by controlling the third three-way valve and the fourth three-way valve, a part of the refrigerant enters the first heat exchanger to supply heat to the indoor space; the other part of the refrigerant is subjected to direction conversion by a first three-way valve and a second three-way valve of a third heat exchanger, enters the third heat exchanger for heat release and defrosting, both the first heat exchanger and the third heat exchanger are condensers, the temperature of the refrigerant in the third heat exchanger is reduced after heat release and condensation are finished, the refrigerant is converged with the refrigerant subjected to heat exchange by the first heat exchanger and then enters an expansion valve for throttling and pressure reduction, the temperature is reduced while the pressure is reduced, a low-temperature and low-pressure refrigerant is obtained, the low-temperature and low-pressure refrigerant enters the second heat exchanger for heat absorption and then enters a compressor again, and the normal heat supply working; wherein the dashed lines indicate that the lines are not open.
As shown in fig. 4, when the dual-chamber outdoor unit air source heat pump unit is in a refrigeration working condition in summer, the direction change control is performed through the four-way valve, the compressor sucks low-pressure low-temperature refrigerant steam generated in the first heat exchanger, after adiabatic compression, the temperature and the pressure of the refrigerant are increased, high-temperature high-pressure refrigerant enters the second heat exchanger and the third heat exchanger and releases heat to the outdoor, the temperature of the refrigerant is reduced after heat release and condensation of the refrigerant are completed, the refrigerant enters the expansion valve for throttling and pressure reduction after being converged, the temperature is reduced while the pressure is reduced, low-temperature low-pressure refrigerant is obtained, the low-temperature low-pressure refrigerant enters the first heat exchanger; wherein the dashed lines indicate that the lines are not open.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. The utility model provides an air source heat pump set of incessant heat supply during defrosting, includes cross valve (1), sets up at indoor first heat exchanger (2) and sets up at outdoor heat exchanger group, its characterized in that: the heat exchanger group arranged outdoors consists of a second heat exchanger (3) and a third heat exchanger (4), a first interface of the four-way valve (1) is connected with an opening at one end of the first heat exchanger (2), and an opening at the other end of the first heat exchanger (2) is respectively connected with the second heat exchanger (3) and the third heat exchanger (4);
an opening at the other end of the first heat exchanger (2) is connected with a first interface of a first three-way valve (5), a second interface of the first three-way valve (5) is connected with an opening at one end of a third heat exchanger (4), a third interface of the first three-way valve (5) is connected with a first interface of a four-way valve (1), an opening at the other end of the third heat exchanger (4) is connected with a second interface of a second three-way valve (6), a first interface of the second three-way valve (6) is connected with an opening at the other end of the first heat exchanger (2), and a third interface of the second three-way valve (6) is connected with a third interface of the four-way valve (1);
the heat exchanger is characterized in that the other end opening of the first heat exchanger (2) is connected with a first interface of a third three-way valve (7), a second interface of the third three-way valve (7) is connected with one end opening of the second heat exchanger (3), a third interface of the third three-way valve (7) is connected with the other end opening of the first heat exchanger (2), the other end opening of the second heat exchanger (3) is connected with a second interface of a fourth three-way valve (8), the first interface of the fourth three-way valve (8) is connected with a first interface of the four-way valve (1), and the third interface of the fourth three-way valve (8) is connected with a third interface of the four-way valve (1).
2. The air source heat pump unit for supplying uninterrupted heat during defrosting according to claim 1, wherein: and a second interface and a fourth interface of the four-way valve (1) are connected with the compressor (9) to form a circulation loop.
3. The air source heat pump unit for supplying uninterrupted heat during defrosting according to claim 1, wherein: and an opening at the other end of the first heat exchanger (2) is respectively connected with the second heat exchanger (3) and the third heat exchanger (4) through an expansion valve (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920929462.XU CN210089177U (en) | 2019-06-19 | 2019-06-19 | Air source heat pump unit of incessant heat supply during defrosting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920929462.XU CN210089177U (en) | 2019-06-19 | 2019-06-19 | Air source heat pump unit of incessant heat supply during defrosting |
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| CN210089177U true CN210089177U (en) | 2020-02-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145891A (en) * | 2019-06-19 | 2019-08-20 | 清华大学 | The net for air-source heat pump units and its progress control method of uninterrupted heat supply during a kind of defrosting |
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2019
- 2019-06-19 CN CN201920929462.XU patent/CN210089177U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145891A (en) * | 2019-06-19 | 2019-08-20 | 清华大学 | The net for air-source heat pump units and its progress control method of uninterrupted heat supply during a kind of defrosting |
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