CN210165600U - Single-cooling type heat recovery system - Google Patents
Single-cooling type heat recovery system Download PDFInfo
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- CN210165600U CN210165600U CN201920592400.4U CN201920592400U CN210165600U CN 210165600 U CN210165600 U CN 210165600U CN 201920592400 U CN201920592400 U CN 201920592400U CN 210165600 U CN210165600 U CN 210165600U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/56—Heat recovery units
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Abstract
The utility model provides a singly cool heat recovery system, including indoor heat exchanger, the compressor module, the heat recovery heat exchanger, first PWM flow control valve, second PWM flow control valve, outdoor heat exchanger and a plurality of pipeline, a link of indoor heat exchanger passes through the pipeline and is connected with the input of compressor module, the pipeline that the output of compressor module is connected falls into two the tunnel, first PWM flow control valve has set gradually on the pipeline all the way, heat recovery heat exchanger and check valve, second PWM flow control valve and outdoor heat exchanger have set gradually on another way pipeline, pipeline that outdoor heat exchanger connects out is parallelly connected to the reservoir with the pipeline that the check valve connected out, the reservoir is reconnected to indoor heat exchanger after connecting gradually dry filter and expansion valve through the pipeline. The system has obvious energy-saving effect, effectively replaces the existing electric heating mode, and reduces the energy consumption and the use cost.
Description
Technical Field
The utility model relates to an air conditioning equipment, in particular to singly cool type heat recovery system.
Background
The conventional air cabinet system generally comprises an air inlet section, a filtering section, an evaporation cooling section, an overhaul section, an electric heating section, a steam humidifying section and a fan air outlet section. The air inlet section is used for connecting an air inlet pipe; the filtering section is used for installing a filter to ensure the cleanliness of filtered air; the evaporation cooling section is used for cooling and dehumidifying the passing air by an evaporator of the refrigerating system; the electric heating section is used for heating air; the steam humidifying section is used for humidifying air; the air outlet section of the fan is used for connecting an air supply pipeline; the air supply of the air cabinet can ensure constant temperature and humidity. However, the conventional wind cabinet system has disadvantages in that: after passing through the evaporation and temperature reduction section, the air is heated through the electric heating section, so that the energy consumption is high by using electric heating, and the use cost is high.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model provides a single cold type heat recovery system, this single cold type heat recovery system have energy-concerving and environment-protective and the lower advantage of use cost.
The utility model relates to a technical solution:
the utility model provides a singly cool type heat recovery system, including indoor heat exchanger, the compressor module, the heat recovery heat exchanger, first PWM flow control valve, second PWM flow control valve, outdoor heat exchanger and a plurality of pipeline, a connecting end of indoor heat exchanger passes through the pipeline and is connected with the input of compressor module, the pipeline that the output of compressor module is connected falls into two the tunnel, first PWM flow control valve has set gradually on the pipeline of the same kind, heat recovery heat exchanger and check valve, second PWM flow control valve and outdoor heat exchanger have set gradually on another way pipeline, the pipeline that outdoor heat exchanger connects out is parallelly connected to the reservoir with the pipeline that the check valve connects out, the reservoir is connected to indoor heat exchanger after connecting gradually dry filter and expansion valve through the pipeline.
Furthermore, a gas-liquid separator is arranged on a pipeline connecting the indoor heat exchanger and the compressor module.
Furthermore, a low-pressure switch and an air suction temperature monitoring device are sequentially arranged on a pipeline connected with the gas-liquid separator and the compressor module.
Furthermore, the compressor module comprises a digital compressor, a fixed-frequency compressor and an oil separator, a PWM (pulse-width modulation) regulating valve is connected between an input end pipeline of the digital compressor and a regulating chamber of the digital compressor through a pipeline, an output end of the digital compressor and an output end of the fixed-frequency compressor are connected to an input end of the oil separator in parallel through a pipeline, and an output end of the oil separator is divided into two paths through a pipeline and is respectively connected with the first PWM flow control valve and the second PWM flow control valve.
Furthermore, a one-way valve is connected to the pipeline at the output end of the digital compressor.
Further, the digital compressor and the fixed-frequency compressor are respectively connected with the oil separator through pipelines.
Furthermore, a high-pressure switch and an exhaust temperature monitoring device are arranged on a pipeline connecting the output ends of the digital compressor and the fixed-frequency compressor with the oil separator.
Furthermore, the compressor module is a digital compressor, or a plurality of digital compressors are used in parallel, or a digital compressor is used in parallel with a plurality of fixed-frequency compressors, or a plurality of fixed-frequency compressors are used in parallel, or a variable-capacity compressor is used in parallel with a fixed-frequency compressor.
Further, the indoor heat exchanger and the heat recovery heat exchanger adopt fin type heat exchangers or micro-channel heat exchangers.
Further, the outdoor heat exchanger adopts a fin type heat exchanger, a micro-channel heat exchanger or a water-cooling heat exchanger.
Through the cooperation of first PWM flow control valve and second PWM flow control valve, the adjustment comes control heat recovery heat exchanger to the heat input through the air through heat recovery heat exchanger's refrigerant quantity, and make full use of retrieves the heat of discharging to atmospheric and heats the air of process, need not electric heating, and energy-conserving effect is very showing, has effectively replaced current electric heating mode, has reduced energy consumption and use cost.
Drawings
Fig. 1 is a schematic view of the pipe connection structure of the single-cooling heat recovery system of the present invention.
Detailed Description
The technical solution in the embodiment of the present invention is clearly and completely described below with reference to the drawings in the embodiment of the present invention. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of the invention.
Referring to fig. 1, the present invention provides a single cooling type heat recovery system, which includes an indoor heat exchanger 1, a compressor module 3, a heat recovery heat exchanger 4, a first PWM flow control valve 5, the compressor comprises a second PWM flow control valve 6, an outdoor heat exchanger 7 and a plurality of pipelines 8, wherein one connecting end of the indoor heat exchanger 1 is connected with the input end of the compressor module 3 through the pipeline 8, the pipeline 8 connected with the output end of the compressor module 3 is divided into two paths, the first PWM flow control valve 5, the heat recovery heat exchanger 4 and the check valve 41 are sequentially arranged on one pipeline 8, the second PWM flow control valve 6 and the outdoor heat exchanger 7 are sequentially arranged on the other pipeline 8, the pipeline 8 connected out of the outdoor heat exchanger 7 and the pipeline 8 connected out of the check valve 41 are connected in parallel to a liquid accumulator 74, and the liquid accumulator 74 is sequentially connected with a drying filter 76 and an expansion valve 77 through the pipeline 8 and then is connected to the indoor heat.
The pipeline 8 that indoor heat exchanger 1 and compressor module 3 are connected is provided with vapour and liquid separator 9 on, and vapour and liquid separator 9 is used for separating the gas and the liquid of return compressor refrigerant, prevents that refrigerant liquid from getting into the compressor, leads to the compressor to produce the liquid impact, damages the compressor.
A low-pressure switch 10 and an air suction temperature monitoring device 11 are sequentially arranged on a pipeline 8 connecting a gas-liquid separator 9 and a compressor module 3, when the pressure of the low-pressure side of the refrigeration system is lower than the protection pressure (namely the designed disconnection pressure of the low-pressure switch), the low-pressure switch is disconnected, a signal is sent to a controller, the system is protected to stop, and an alarm signal is sent out at the same time; the suction temperature monitoring device 11 is used to measure the temperature of the suction gas of the compressor (i.e. the return temperature) for monitoring whether the system is operating normally, and in the system throttled by the electronic expansion valve, the suction temperature is also used to measure the suction superheat of the refrigerant, and the opening degree of the electronic expansion valve is controlled by the suction superheat.
In this embodiment, the compressor module 3 includes a digital compressor 31, a fixed-frequency compressor 32 and an oil separator 33, and a PWM regulating valve 34 is connected between the input end pipe 8 of the digital compressor 31 and the regulating chamber of the digital compressor 31 through the pipe 8 for regulating the capacity of the digital compressor 31; the output end of the digital compressor 31 and the output end of the fixed-frequency compressor 32 are connected in parallel to the input end of the oil separator 33 through a pipeline 8, and the output end of the oil separator 33 is divided into two paths through the pipeline 8 and respectively connected with the first PWM flow control valve 5 and the second PWM flow control valve 6.
The output end pipeline 8 of the digital compressor 31 is connected with a one-way valve 37, so that the digital compressor can prevent the high-pressure gas on the exhaust side from flowing back to the exhaust port of the digital compressor 31 when the adjustment is unloaded.
A high-pressure switch 35 and an exhaust temperature monitoring device 36 are arranged on the pipeline 8 connecting the output ends of the digital compressor 31 and the fixed-frequency compressor 32 with the oil separator 33, when the pressure of the high-pressure side of the refrigeration system is higher than the protection pressure (namely the disconnection pressure designed by the high-pressure switch), the high-pressure switch is disconnected, a signal is sent to the controller, the system is protected to stop, and an alarm signal is given at the same time; the exhaust temperature monitoring device 36 is used for measuring the exhaust temperature of the digital compressor 31 and the fixed-frequency compressor 32, preventing the exhaust temperature from being too high (actually preventing the motor inside the compressor from being damaged due to too high temperature), sending a signal to the controller when the exhaust temperature is too high, protecting the system and stopping the system, and simultaneously giving an alarm signal.
The digital compressor 31 and the fixed-frequency compressor 32 are respectively connected with the oil separator 33 through the pipeline 8 to separate compressor refrigeration oil (i.e. compressor lubricating oil) discharged along with the refrigerant, and the compressor refrigeration oil is sent back to the digital compressor 31 and the fixed-frequency compressor 32 again to prevent the compressor from being damaged due to oil shortage.
According to the actual use requirement, the compressor module 3 can be one digital compressor 31, or a plurality of digital compressors 31 connected in parallel, or one digital compressor 31 connected in parallel with a plurality of fixed frequency compressors 32, or only a plurality of fixed frequency compressors 32 connected in parallel, or a variable capacity compressor connected in parallel with the fixed frequency compressors 32.
The indoor heat exchanger 1, the heat recovery heat exchanger 4 and the outdoor heat exchanger 7 can all adopt fin type heat exchangers or micro-channel heat exchangers. The outdoor heat exchanger 7 may also be a water-cooled heat exchanger.
During cooling, the refrigerant flows in the direction of the dotted arrow shown in fig. 1, thereby forming a refrigeration cycle.
After being compressed by the compressor module 3 and converted into high-temperature and high-pressure gas, the refrigerant enters the first PWM flow control valve 5 and the second PWM flow control valve 6 in two paths, when the air needs to be heated, the first PWM flow control valve 5 is opened, the high-temperature and high-pressure gas enters the heat recovery heat exchanger 4 to heat the air, if the heating quantity of the air needs to be reduced, a second PWM flow control valve 6 is opened to shunt a part of high-temperature and high-pressure gas, and/or the first PWM flow control valve 5 is adjusted to be small, the refrigerant passes through the first PWM flow control valve 5, the heat recovery heat exchanger 4 and the check valve 41, and the refrigerant passing through the second PWM flow control valve 6 and the outdoor heat exchanger 7 sequentially pass through the accumulator 74, the dry filter 76, the expansion valve 77 and the indoor heat exchanger 1, and finally return to the input end of the compressor module 3, thereby forming a refrigeration cycle.
Through the cooperation of first PWM flow control valve 5 and second PWM flow control valve 6, the adjustment comes control heat recovery heat exchanger 4 to the heat input through the air through the refrigerant quantity of heat recovery heat exchanger 4, and make full use of retrieves the heat of discharging to atmospheric and heats the air of process, need not electric heating, and energy-conserving effect is very showing, has effectively replaced current electric heating mode, has reduced energy consumption and use cost.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all utilize the equivalent structure or equivalent flow transformation that the content of the specification does, or directly or indirectly use in other related technical fields, all including in the same way the patent protection scope of the present invention.
Claims (10)
1. A single-cooling type heat recovery system is characterized by comprising an indoor heat exchanger (1), a compressor module (3), a heat recovery heat exchanger (4), a first PWM flow control valve (5), a second PWM flow control valve (6), an outdoor heat exchanger (7) and a plurality of pipelines (8), wherein a connecting end of the indoor heat exchanger (1) is connected with an input end of the compressor module (3) through the pipelines (8), the pipeline (8) connected with an output end of the compressor module (3) is divided into two paths, the first PWM flow control valve (5), the heat recovery heat exchanger (4) and a check valve (41) are sequentially arranged on one path of pipeline (8), the second PWM flow control valve (6) and the outdoor heat exchanger (7) are sequentially arranged on the other path of pipeline (8), the pipeline (8) connected with the check valve (41) of the outdoor heat exchanger (7) is connected with a liquid reservoir (74) in parallel, the accumulator (74) is connected to the indoor heat exchanger (1) after being connected to a dry filter (76) and an expansion valve (77) in this order via a pipe (8).
2. Single cold type heat recovery system according to claim 1, wherein a gas-liquid separator (9) is arranged on the conduit (8) connecting the indoor heat exchanger (1) and the compressor module (3).
3. The single cooling type heat recovery system according to claim 2, wherein the pipeline (8) connecting the gas-liquid separator (9) and the compressor module (3) is provided with a low-pressure switch (10) and a suction temperature monitoring device (11) in sequence.
4. The single cooling type heat recovery system according to claim 1, wherein the compressor module (3) comprises a digital compressor (31), a fixed frequency compressor (32) and an oil separator (33), a PWM regulating valve (34) is connected between an input end pipeline (8) of the digital compressor (31) and a regulating chamber of the digital compressor (31) through a pipeline (8), an output end of the digital compressor (31) and an output end of the fixed frequency compressor (32) are connected in parallel to an input end of the oil separator (33) through a pipeline (8), and an output end of the oil separator (33) is divided into two paths through a pipeline (8) and is respectively connected with the first PWM flow control valve (5) and the second PWM flow control valve (6).
5. Single cold type heat recovery system according to claim 4, wherein a non-return valve (37) is connected to the output conduit (8) of the digital compressor (31).
6. A single cold type heat recovery system according to claim 4, wherein the digital compressor (31) and the fixed frequency compressor (32) are connected to the oil separator (33) through a pipe (8), respectively.
7. The single cooling type heat recovery system according to claim 4, wherein the pipeline (8) connecting the output ends of the digital compressor (31) and the fixed frequency compressor (32) with the oil separator (33) is provided with a high pressure switch (35) and an exhaust temperature monitoring device (36).
8. The single cold type heat recovery system according to claim 4, wherein the compressor module (3) is a digital compressor (31), or a plurality of digital compressors (31) are used in parallel, or a digital compressor (31) is used in parallel with a plurality of fixed frequency compressors (32), or a plurality of fixed frequency compressors (32) are used in parallel, or a variable capacity compressor is used in parallel with a fixed frequency compressor (32).
9. The single cold type heat recovery system according to claim 1, wherein the indoor heat exchanger (1) and the heat recovery heat exchanger (4) employ a fin type heat exchanger or a micro channel heat exchanger.
10. A single cold type heat recovery system according to claim 1, wherein the outdoor heat exchanger (7) is a fin heat exchanger, a micro channel heat exchanger or a water cooled heat exchanger.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019200895058 | 2019-01-18 | ||
| CN201920089505 | 2019-01-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210165600U true CN210165600U (en) | 2020-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920592400.4U Active CN210165600U (en) | 2019-01-18 | 2019-04-26 | Single-cooling type heat recovery system |
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| Country | Link |
|---|---|
| CN (1) | CN210165600U (en) |
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2019
- 2019-04-26 CN CN201920592400.4U patent/CN210165600U/en active Active
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