CN209197193U - A kind of Bidirectional cascade heat pump circulating system - Google Patents

A kind of Bidirectional cascade heat pump circulating system Download PDF

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Publication number
CN209197193U
CN209197193U CN201821863760.5U CN201821863760U CN209197193U CN 209197193 U CN209197193 U CN 209197193U CN 201821863760 U CN201821863760 U CN 201821863760U CN 209197193 U CN209197193 U CN 209197193U
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China
Prior art keywords
heat exchanger
outdoor heat
way reversing
compressor
valve
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Active
Application number
CN201821863760.5U
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Chinese (zh)
Inventor
杜贤平
华青梅
杭文斌
丰野
余伟
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Kochem Electric Appliance Co Ltd
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Kochem Electric Appliance Co Ltd
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Priority to CN201821863760.5U priority Critical patent/CN209197193U/en
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Abstract

The utility model discloses a kind of Bidirectional cascade heat pump circulating systems.It is related to overlapping heat pump circulating system technical field.Including compressor, the outlet of compressor is divided into two branches, and branch one is connected with the C-terminal of four-way reversing valve, and branch two successively accesses the arrival end of outdoor heat exchanger by second solenoid valve, heater, check valve;The end D of four-way reversing valve is connected with the arrival end of indoor heat exchanger;The arrival end of the outlet end access outdoor heat exchanger of indoor heat exchanger;The outlet end of outdoor heat exchanger is connected with the end D of four-way reversing valve;The end A of four-way reversing valve is connected with the arrival end of gas-liquid separator;The arrival end of the outlet end access compressor of gas-liquid separator.The utility model is made up of the circulatory system of compressor, heater, outdoor heat exchanger, gas-liquid separator solenoid valve, increases the flowing velocity of the refrigerant of the circulatory system, accelerates the defrosting speed of outdoor heat exchanger, improves working efficiency.

Description

A kind of Bidirectional cascade heat pump circulating system
Technical field
The utility model belongs to overlapping heat pump circulating system technical field, more particularly to a kind of Bidirectional cascade heat pump cycle System.
Background technique
Cascade refrigeration cycle is that biggish total temperature difference is divided into two sections or several segments, is held with the refrigerating capacity of high-temperature level The condensation load for carrying on a shoulder pole low-temperature level, to obtain the mode of lower cryogenic temperature.
The advantages of cascade cycle freezes is to recycle by conventional steam compression type refrigerating, in service pressure model It is able to achieve the cryogenic temperature down to -140 DEG C under the premise of enclosing with pressure ratio, has greatly been widened while guaranteeing working efficiency often The refrigeration temperature area of rule system.
Outdoor heat exchanger in existing overlapping heat pump easily adheres to frost in winter, influences the heating effect of system.
Utility model content
The purpose of this utility model is to provide a kind of Bidirectional cascade heat pump circulating systems to be led to by the heater being equipped with The circulatory system that solenoid valve constitutes compressor, heater, outdoor heat exchanger, gas-liquid separator is crossed, the refrigeration of the circulatory system is increased The flowing velocity of agent accelerates the defrosting speed of outdoor heat exchanger, improves working efficiency;It is made in addition, being realized by four-way reversing valve The two-way flow of cryogen realizes refrigeration and heating work, solves the problems, such as that the defrosting effect of existing overlapping heat pump system is poor.
In order to solve the above technical problems, the utility model is achieved through the following technical solutions:
The utility model is a kind of Bidirectional cascade heat pump circulating system, including compressor, the outlet of the compressor are divided into Two branches, wherein branch one is connected with the C-terminal of four-way reversing valve, and branch two successively passes through second solenoid valve, heater, list To the arrival end of valve access outdoor heat exchanger;The end D of the four-way reversing valve is connected with the arrival end of indoor heat exchanger;It is described The arrival end of the outlet end access outdoor heat exchanger of indoor heat exchanger;
The outlet end of the outdoor heat exchanger is connected with the end D of four-way reversing valve;The end A of the four-way reversing valve and gas The arrival end of liquid/gas separator is connected;The arrival end of the outlet end access compressor of the gas-liquid separator.
Further, it is successively arranged on the connecting line of the arrival end of the outlet end and heat exchanger of the indoor heat exchanger swollen Swollen valve, the first solenoid valve.
Further, the heater is tube heater.
Further, fan is mounted at the air port of the outdoor heat exchanger and air port of indoor heat exchanger.
The utility model has the following beneficial effects:
The utility model passes through the heater being equipped with, and constitutes compressor, heater, outdoor heat exchanger, gas by solenoid valve The circulatory system of liquid/gas separator increases the flowing velocity of the refrigerant of the circulatory system, accelerates the defrosting speed of outdoor heat exchanger, mentions High working efficiency;In addition, realizing the two-way flow of refrigerant by four-way reversing valve, refrigeration and heating work are realized.
Certainly, any product for implementing the utility model does not necessarily require achieving all the advantages described above at the same time.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the utility model embodiment, make required for being described below to embodiment Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings Other attached drawings.
Fig. 1 is the system structure diagram of the utility model;
In attached drawing, parts list represented by the reference numerals are as follows:
1- compressor, 2- four-way reversing valve, 3- outdoor heat exchanger, the first solenoid valve of 4-, 5- expansion valve exchange heat in the room 6- Device, 7- gas-liquid separator, 8- second solenoid valve, 9- heater, 10- check valve.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts All other embodiment obtained, fall within the protection scope of the utility model.
Refering to Figure 1, the utility model is a kind of Bidirectional cascade heat pump circulating system, including compressor 1, compressor 1 outlet is divided into two branches, wherein branch one is connected with the C-terminal of four-way reversing valve 2, and branch two successively passes through the second electromagnetism Valve 8, heater 9, check valve 10 access the arrival end of outdoor heat exchanger 3;The end D of four-way reversing valve 2 and entering for indoor heat exchanger 6 Mouth end is connected;The arrival end of the outlet end access outdoor heat exchanger 3 of indoor heat exchanger 6;
The outlet end of outdoor heat exchanger 3 is connected with the end D of four-way reversing valve 2;The end A of four-way reversing valve 2 and gas-liquid point Arrival end from device 7 is connected;The arrival end of the outlet end access compressor 1 of gas-liquid separator 7.
Bidirectional cascade heat pump circulating system is when running cooling condition:
Four-way reversing valve 2 is connected to the outlet end of compressor 1 and the arrival end of indoor heat exchanger 6, and is connected to outdoor heat exchanger 3 Outlet end and gas-liquid separator 7 arrival end, and open the first solenoid valve 4, close second solenoid valve 8;Indoor heat exchanger 6 is Evaporator, outdoor heat exchanger 3 are condenser.
Bidirectional cascade heat pump circulating system is when running heating condition:
Four-way reversing valve 2 is connected to the outlet end of compressor 1 and the arrival end of outdoor heat exchanger 3, and is connected to indoor heat exchanger 6 Outlet end and gas-liquid separator 7 arrival end, and open the first solenoid valve 4, close second solenoid valve 8;Indoor heat exchanger 6 is Condenser, outdoor heat exchanger 3 are evaporator.
Bidirectional cascade heat pump circulating system is when running defrosting operating condition:
Four-way reversing valve 2 is connected to the outlet end of compressor 1 and the arrival end of indoor heat exchanger 6, and is connected to outdoor heat exchanger 3 Outlet end and gas-liquid separator 7 arrival end, and close the first solenoid valve 4, open second solenoid valve 8.
Wherein, be successively arranged on the connecting line of the arrival end of the outlet end of indoor heat exchanger 6 and heat exchanger 3 expansion valve 5, First solenoid valve 4.
Wherein, heater 9 is tube heater.
Wherein, fan is mounted at the air port of the outdoor heat exchanger 3 and air port of indoor heat exchanger 6.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one of the utility model In embodiment or example.In the present specification, schematic expression of the above terms be not necessarily referring to identical embodiment or Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more embodiment or examples In can be combined in any suitable manner.
The preferred embodiment in the utility model disclosed above is only intended to help to illustrate the utility model.Preferred embodiment is simultaneously There is no the details that detailed descriptionthe is all, also not limiting the utility model is only the specific embodiment.Obviously, according to this theory The content of bright book can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably The principles of the present invention and practical application are explained, so that skilled artisan be enable to better understand and utilize this Utility model.The utility model is limited only by the claims and their full scope and equivalents.

Claims (4)

1. a kind of Bidirectional cascade heat pump circulating system, including compressor (1), it is characterised in that:
The outlet of the compressor (1) is divided into two branches, wherein branch one is connected with the C-terminal of four-way reversing valve (2), branch Two successively access the arrival end of outdoor heat exchanger (3) by second solenoid valve (8), heater (9), check valve (10);Described four The end D of logical reversal valve (2) is connected with the arrival end of indoor heat exchanger (6);Room is accessed in the outlet end of the indoor heat exchanger (6) The arrival end of external heat exchanger (3);
The outlet end of the outdoor heat exchanger (3) is connected with the end D of four-way reversing valve (2);The A of the four-way reversing valve (2) End is connected with the arrival end of gas-liquid separator (7);The entrance of outlet end access compressor (1) of the gas-liquid separator (7) End.
2. a kind of Bidirectional cascade heat pump circulating system according to claim 1, which is characterized in that the indoor heat exchanger (6) expansion valve (5), the first solenoid valve are successively arranged on the connecting line of the arrival end of outlet end and outdoor heat exchanger (3) (4)。
3. a kind of Bidirectional cascade heat pump circulating system according to claim 1, which is characterized in that the heater (9) is Tube heater.
4. a kind of Bidirectional cascade heat pump circulating system according to claim 1, which is characterized in that the outdoor heat exchanger (3) fan is mounted at air port and at the air port of indoor heat exchanger (6).
CN201821863760.5U 2018-11-13 2018-11-13 A kind of Bidirectional cascade heat pump circulating system Active CN209197193U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821863760.5U CN209197193U (en) 2018-11-13 2018-11-13 A kind of Bidirectional cascade heat pump circulating system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821863760.5U CN209197193U (en) 2018-11-13 2018-11-13 A kind of Bidirectional cascade heat pump circulating system

Publications (1)

Publication Number Publication Date
CN209197193U true CN209197193U (en) 2019-08-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112594952A (en) * 2020-12-16 2021-04-02 宁波爱握乐热能科技有限公司 Ultra-low temperature frequency conversion cascade air source heat pump unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112594952A (en) * 2020-12-16 2021-04-02 宁波爱握乐热能科技有限公司 Ultra-low temperature frequency conversion cascade air source heat pump unit

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