CN213119599U - Low-temperature air source heat pump - Google Patents
Low-temperature air source heat pump Download PDFInfo
- Publication number
- CN213119599U CN213119599U CN202021409862.7U CN202021409862U CN213119599U CN 213119599 U CN213119599 U CN 213119599U CN 202021409862 U CN202021409862 U CN 202021409862U CN 213119599 U CN213119599 U CN 213119599U
- Authority
- CN
- China
- Prior art keywords
- refrigerant
- air supply
- heat exchanger
- air
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Other Air-Conditioning Systems (AREA)
Abstract
The utility model provides a low temperature air source heat pump belongs to air source heat pump system technical field. The problem that gas supplementing and liquid spraying cannot be carried out simultaneously when a gas supplementing throttle valve and a liquid spraying throttle valve are designed in series in the prior art is solved. The low-temperature air source heat pump comprises a compressor, a first heat exchanger, a main throttle, a second heat exchanger and an air supplementing device which are connected through a refrigerant pipe, wherein the air supplementing device is in sealed communication with the compressor, the first heat exchanger and the main throttle respectively, the low-temperature air source heat pump also comprises a liquid spraying device which is in sealed communication with the compressor, the first heat exchanger and the main throttle respectively, and the liquid spraying device and the air supplementing device are arranged in parallel. The low-temperature air source heat pump has the advantages that: through adopting parallelly connected setting of tonifying qi flow controller and hydrojet flow controller, realized that tonifying qi and hydrojet can go on simultaneously, both controlled exhaust temperature and compromise unit efficiency, if break down all the way simultaneously, do not influence the unit and normally use, also be favorable to solving the frequent problem of tonifying qi flow controller regulation in addition.
Description
Technical Field
The utility model belongs to the technical field of air source heat pump system, especially, relate to a low temperature air source heat pump.
Background
The low-temperature air source heat pump system adopts a quasi-two-stage compression EVI (air supplement and enthalpy increase) system, if the low-temperature air source heat pump system operates under the working conditions of low ring temperature and high outlet water temperature, the compression ratio is increased, the exhaust temperature is rapidly increased, the temperature cannot be reduced by air supplement, and liquid spraying is required to assist in temperature reduction, as shown in figure 1, the existing unit adopts an air supplement throttle valve 1 'and a liquid spraying throttle valve 2' which are connected in series, in such a connection mode, during operation, only one of the two throttle valves can realize air supplement or liquid spraying operation according to the opening size of the throttle valve, while the other throttle valve is in, the defects that air supplement cannot be realized during liquid spraying.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to provide a low temperature air source heat pump that solves at least some of the above problems.
In order to achieve the above purpose, the utility model adopts the following technical proposal: the utility model discloses a low temperature air source heat pump, include by refrigerant union coupling compressor, first heat exchanger, main throttle, second heat exchanger and air supplement unit, air supplement unit communicates its characterized in that with compressor, first heat exchanger and main throttle are sealed respectively: the liquid spraying device is respectively communicated with the compressor, the first heat exchanger and the main throttle in a sealing mode, and the liquid spraying device and the air supplementing device are arranged in parallel.
In the low-temperature air source heat pump, the air supplement device comprises a refrigerant air supplement pipe, one end of the refrigerant air supplement pipe is communicated with the first heat exchanger, the other end of the refrigerant air supplement pipe is communicated with an air supplement port of the compressor, an air supplement restrictor is arranged on the refrigerant air supplement pipe, and the air supplement device also comprises a refrigerant liquid-air conversion device for converting low-temperature liquid refrigerant cooled by the air supplement restrictor into gaseous refrigerant; the liquid spraying device comprises a refrigerant liquid supplementing pipe, one end of the refrigerant liquid supplementing pipe is communicated with the first heat exchanger, the other end of the refrigerant liquid supplementing pipe is communicated with a gas supplementing port and/or a gas suction port of the compressor, and a liquid spraying throttler is arranged on the refrigerant liquid supplementing pipe.
In the low-temperature air source heat pump, the refrigerant liquid-gas conversion device comprises an economizer, the refrigerant gas supplementing pipe comprises a refrigerant first gas supplementing branch pipe and a refrigerant second gas supplementing branch pipe, one end of each of the refrigerant first gas supplementing branch pipe and the refrigerant second gas supplementing branch pipe is respectively communicated with the gas supplementing ports of the first heat exchanger and the compressor one by one, the gas supplementing throttler is arranged on the refrigerant first gas supplementing branch pipe, a pair of communicated first ports and second ports of the economizer are respectively communicated with the first heat exchanger and the main throttler one by one, and the refrigerant first gas supplementing branch pipe and the refrigerant second gas supplementing branch pipe are communicated with each other through another pair of communicated third ports and fourth ports of the economizer.
In the low-temperature air source heat pump, a reverse blocking device for preventing the refrigerant at the air supplementing device and/or the liquid spraying device from reversely flowing to the first heat exchanger is arranged on the refrigerant pipe between one end of the two intersected ends of the air supplementing device and the liquid spraying device, which is close to the first heat exchanger, and the first heat exchanger.
In the low-temperature air source heat pump, the air supply device further comprises an air supply control valve arranged on the refrigerant air supply pipe.
In the low-temperature air source heat pump described above, the air supply control valve is provided at a position closer to the first heat exchanger than the air supply restrictor.
In the low-temperature air source heat pump, the liquid replenishing device further comprises a liquid replenishing control valve arranged on the refrigerant replenishing pipe.
In the low-temperature air source heat pump, the fluid replacement control valve is disposed at a position closer to the first heat exchanger than the fluid replacement restrictor.
Compared with the prior art, the low-temperature air source heat pump has the advantages that: the invention realizes simultaneous air supply and liquid spraying by adopting the parallel arrangement of the air supply throttler and the liquid spraying throttler, thereby not only controlling the exhaust temperature, but also considering the unit efficiency, and meanwhile, if one path of the air supply throttler fails, the normal use of the unit is not influenced, and in addition, the invention is beneficial to solving the problem of frequent adjustment of the air supply throttler.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 provides a schematic diagram of the operation of a prior art heat pump.
Fig. 2 provides an operational schematic diagram of a heat pump according to an embodiment of the present invention.
Fig. 3 provides a schematic diagram of the operation of the heat pump of fig. 2 in a heating mode.
In the figure, a gas supply throttle valve 1 ', a liquid spray throttle valve 2 ', a compressor 3 ', a main throttle valve 4 ', an economizer 5 ', a refrigerant pipe 101, a compressor 102, a gas supply port 103, a refrigerant liquid supply pipe 104, a gas suction port 105, a first refrigerant gas supply branch pipe 106, a second refrigerant gas supply branch pipe 107, an economizer 108, a first port 109, a second port 110, a third port 111, a fourth port 112, a main throttle valve 113, a gas supply throttle valve 114, a liquid spray throttle valve 115, a check valve 116, a gas supply electromagnetic valve 117, a liquid supply electromagnetic valve 118 and a gas discharge port 119.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
As shown in fig. 2, the low-temperature air source heat pump includes a compressor 102, a first heat exchanger, a main throttle, a second heat exchanger, an air supplement device, a liquid spraying device, and a liquid storage device, wherein the compressor 102, the first heat exchanger, the main throttle, the second heat exchanger, the air supplement device, the liquid spraying device, the first heat exchanger, and the main throttle are connected by a refrigerant pipe 101, and the air supplement device is hermetically communicated with the compressor, the first heat exchanger, and the main throttle respectively.
It should be noted that the first heat exchanger here is used as a condenser when heating, the second heat exchanger is used as an evaporator when heating, and the first heat exchanger here is a water-side heat exchanger and the second heat exchanger here is a wind-side heat exchanger in general, which may be different according to the specific situation.
In addition, a reverse blocking device for preventing the refrigerant at the air supplementing device and/or the liquid spraying device from reversely flowing to the first heat exchanger is arranged on the refrigerant pipe between one end of the two intersected ends of the air supplementing device and the liquid spraying device, which is close to the first heat exchanger, and the first heat exchanger.
It should be noted that the check valve 116 is one or more check valves, and the check valve may be other devices as needed.
Specifically, the air supplement device comprises a refrigerant air supplement pipe, one end of the refrigerant air supplement pipe is communicated with the first heat exchanger, the other end of the refrigerant air supplement pipe is communicated with an air supplement port 103 of the compressor 102, an air supplement restrictor is arranged on the refrigerant air supplement pipe, and the air supplement device further comprises a refrigerant liquid-air conversion device for converting the low-temperature liquid refrigerant cooled by the air supplement restrictor into the gaseous refrigerant.
The refrigerant liquid-gas conversion device adopts an economizer 108, the refrigerant gas supplementing pipe at the moment comprises a refrigerant first gas supplementing branch pipe 106 and a refrigerant second gas supplementing branch pipe 107, one end of each of the refrigerant first gas supplementing branch pipe 106 and the refrigerant second gas supplementing branch pipe 107 is respectively communicated with the first heat exchanger and the gas supplementing port 103 of the compressor 102 one by one, the gas supplementing throttler is arranged on the refrigerant first gas supplementing branch pipe 106, a pair of communicated first ports 109 and second ports 110 on the economizer 108 are respectively communicated with the first heat exchanger and the main throttler one by one, and the refrigerant first gas supplementing branch pipe 106 and the refrigerant second gas supplementing branch pipe 107 are communicated through another pair of communicated third ports 111 and fourth ports 112 on the economizer 108.
It should be noted that the coolant liquid-gas conversion device herein may include other devices (such as an electric heating element) besides or in addition to the economizer 111 described above.
It should be noted that the main throttle, the air make-up throttle and the spray throttle may be throttle pipes or throttle valves (as shown in fig. 2 and 3, the main throttle is a main throttle 113, the air make-up throttle is an air make-up throttle 114 and the spray throttle is a spray throttle 115), and the number of the main throttle, the air make-up throttle and the spray throttle may be set according to the requirement, or the main throttle, the air make-up throttle and the spray throttle may be used together.
The liquid spraying device comprises a refrigerant liquid supplementing pipe 104, one end of the refrigerant liquid supplementing pipe is communicated with the first heat exchanger, the other end of the refrigerant liquid supplementing pipe is communicated with a gas supplementing port 103 and/or a gas suction port 105 of the compressor 102, and a liquid spraying throttler is arranged on the refrigerant liquid supplementing pipe 104.
If the compressor 102 is provided with the air supplement port 103 (i.e., if the compressor is selected, a dedicated compressor with the air supplement port needs to be selected), and if the compressor 102 does not have the air supplement port 103, the liquid refrigerant in the refrigerant supplement pipe 104 is generally directly injected into the air suction port 105 of the compressor 102 to achieve the liquid-jet cooling.
Preferably, the air supply device further comprises an air supply control valve arranged on the refrigerant air supply pipe, and the air supply control valve is arranged at a position closer to the first heat exchanger relative to the air supply restrictor.
Similarly, the liquid replenishing device here further includes a liquid replenishing control valve provided in the refrigerant replenishing pipe, and preferably, the liquid replenishing control valve is provided at a position closer to the first heat exchanger than the liquid replenishing restrictor.
Note that, the makeup control valve and the makeup control valve are generally solenoid valves, such as a makeup solenoid valve 117 as a makeup control valve and a makeup solenoid valve 118 as a makeup control valve shown in fig. 2 and 3.
The working principle is as follows: as shown in FIG. 3, when the heat pump works under the working conditions of low ring temperature, high water temperature and large compression ratio, the exhaust temperature will rise rapidly, at this time, the air supply solenoid valve 117 and the air supply throttle valve 114 are already in working state, the air supply throttle valve 114 adopts superheat degree control, at this time, the exhaust temperature of the compressor 102 cannot be reduced, the control system on the heat pump instructs to open the liquid supply solenoid valve 118 and the liquid spraying throttle valve 115, the opening degree of the air supply throttle valve 114 is kept unchanged, air supply and liquid spraying are carried out simultaneously, the liquid spraying throttle valve 115 is adjusted according to the exhaust temperature of the compressor 102, when the liquid spraying throttle valve 115 exits, the air supply throttle valve 114 continues to be adjusted according to superheat degree, when any one of the air supply throttle valve 114 and the liquid spraying throttle valve 115 connected in parallel fails.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although terms such as the gas make-up throttle valve 1 ', the liquid injection throttle valve 2 ', the compressor 3 ', the main throttle valve 4 ', the economizer 5 ', the refrigerant pipe 101, the compressor 102, the gas make-up port 103, the refrigerant make-up liquid pipe 104, the gas suction port 105, the refrigerant first gas make-up branch pipe 106, the refrigerant second gas make-up branch pipe 107, the economizer 108, the first port 109, the second port 110, the third port 111, the fourth port 112, the main throttle valve 113, the gas make-up throttle valve 114, the liquid injection throttle valve 115, the check valve 116, the gas make-up solenoid valve 117, the liquid make-up solenoid valve 118, the gas exhaust port 119, etc., are used more frequently, the possibility of using other terms is. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Claims (6)
1. The utility model provides a low temperature air source heat pump, includes by refrigerant pipe (101) connection compressor (102), first heat exchanger, main throttle, second heat exchanger and air supplement unit, air supplement unit respectively with compressor, first heat exchanger and the sealed intercommunication of main throttle, its characterized in that: the liquid spraying device is respectively communicated with the compressor, the first heat exchanger and the main throttle in a sealing mode, and the liquid spraying device and the air supplementing device are arranged in parallel.
2. The low-temperature air source heat pump as claimed in claim 1, wherein the air supply device comprises a refrigerant air supply pipe, one end of the refrigerant air supply pipe is communicated with the first heat exchanger, the other end of the refrigerant air supply pipe is communicated with an air supply port (103) of the compressor (102), an air supply restrictor is arranged on the refrigerant air supply pipe, and the air supply device further comprises a refrigerant liquid-air conversion device for converting the low-temperature liquid refrigerant cooled by the air supply restrictor into a gaseous refrigerant; the liquid spraying device comprises a refrigerant liquid supplementing pipe (104), one end of the refrigerant liquid supplementing pipe is communicated with the first heat exchanger, the other end of the refrigerant liquid supplementing pipe is communicated with a gas supplementing opening (103) and/or a gas suction opening (105) of the compressor (102), and a liquid spraying throttler is arranged on the refrigerant liquid supplementing pipe (104).
3. Low temperature air source heat pump according to claim 2, characterized in that the cold medium liquid-gas conversion device comprises an economizer (108), the refrigerant air supply pipe comprises a refrigerant first air supply branch pipe (106) and a refrigerant second air supply branch pipe (107), one end of each of the first air supply branch pipe (106) and the second air supply branch pipe (107) of the refrigerant is respectively communicated with the air supply ports (103) of the first heat exchanger and the compressor (102) one by one, the air-replenishing throttler is arranged on a first air-replenishing branch pipe (106) of the refrigerant, a pair of communicated first port (109) and second port (110) on the economizer (108) are respectively communicated with the first heat exchanger and the main throttler one by one, the refrigerant first air supply branch pipe (106) and the refrigerant second air supply branch pipe (107) are communicated with each other through a third port (111) and a fourth port (112) which are communicated with each other by another pair of the economizer (108).
4. The low-temperature air source heat pump as claimed in claim 1, wherein a reverse blocking device for blocking the reverse flow of the refrigerant at the air supplementing device and/or the liquid spraying device to the first heat exchanger is arranged on a refrigerant pipe between one end of two intersected ends of the air supplementing device and the liquid spraying device, which is close to the first heat exchanger, and the first heat exchanger.
5. The low-temperature air source heat pump as claimed in claim 1, wherein the air supply device further comprises an air supply control valve arranged on the refrigerant air supply pipe.
6. The cryogenic air source heat pump of claim 5, wherein the makeup control valve is positioned closer to the first heat exchanger than the makeup restrictor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021409862.7U CN213119599U (en) | 2020-07-16 | 2020-07-16 | Low-temperature air source heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021409862.7U CN213119599U (en) | 2020-07-16 | 2020-07-16 | Low-temperature air source heat pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213119599U true CN213119599U (en) | 2021-05-04 |
Family
ID=75678244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021409862.7U Active CN213119599U (en) | 2020-07-16 | 2020-07-16 | Low-temperature air source heat pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213119599U (en) |
-
2020
- 2020-07-16 CN CN202021409862.7U patent/CN213119599U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11739991B2 (en) | Air conditioning system and control method for air conditioning system | |
| WO2020082740A1 (en) | Two-control jet enthalpy-increasing outdoor unit and multi-split air conditioning system | |
| CN110749116A (en) | Enthalpy-increasing auxiliary road control method for low-temperature heat pump system, low-temperature heat pump system and enthalpy-increasing auxiliary road structure of low-temperature heat pump system | |
| SG184060A1 (en) | Multifunctional air-conditioning and hot-water system | |
| CN112594866A (en) | Anti-freezing control system and control method for multi-split hydraulic module | |
| CN102537414A (en) | Three-way valve improved by utilizing air-condition four-way valve, hot-water air-conditioning system and air conditioner | |
| CN213119599U (en) | Low-temperature air source heat pump | |
| CN212324592U (en) | Water-cooling natural cooling refrigerant direct cooling refrigeration system | |
| CN209230075U (en) | A kind of heat pump system with Semiconductors At Low Temperatures compensation economizer | |
| CN216205581U (en) | Water inlet and outlet reversing device of heat exchanger | |
| WO2020082741A1 (en) | Two-pipe enhanced vapor injection outdoor machine and multi-split system | |
| WO2020082739A1 (en) | Two-pipe system gas-injection enthalpy-increasing outdoor unit and multi-split system | |
| CN113390139B (en) | Carbon dioxide heat pump system | |
| CN204254925U (en) | Heat-exchange system and there is its air-conditioner | |
| CN202432019U (en) | Three-way valve improved by air-conditioning four-way valve, hot water air-conditioning system and air conditioner | |
| CN215850631U (en) | Air conditioning system and vehicle | |
| CN211953309U (en) | Cascade heat pump unit | |
| CN114111104A (en) | Multi-split system | |
| CN209147489U (en) | New type low temperature heat pump system | |
| CN203274351U (en) | Ice slurry cold water heat pump unit | |
| CN112594952A (en) | Ultra-low temperature frequency conversion cascade air source heat pump unit | |
| CN213119594U (en) | EVI heat pump capable of reducing refrigeration abnormal noise | |
| CN216409349U (en) | Heat pump | |
| CN217541143U (en) | Regenerative evaporator system | |
| EP4008973A1 (en) | Air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 323000 No.96 Yunjing Road, Shuige Industrial Park, Lishui City, Zhejiang Province Patentee after: Zhejiang Zhongguang Electric Appliance Group Co.,Ltd. Address before: 323000 No.96 Yunjing Road, Shuige Industrial Park, Lishui City, Zhejiang Province Patentee before: ZHEJIANG ZHONGGUANG ELECTRIC APPLIANCES Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |