CN212778050U

CN212778050U - Electromagnetic valve assembly device for improving refrigeration energy efficiency of low-temperature module unit

Info

Publication number: CN212778050U
Application number: CN202021189275.1U
Authority: CN
Inventors: 范立群
Original assignee: Hebei Bo Zhi Heat Energy Equipment Co ltd
Current assignee: Hebei Bo Zhi Heat Energy Equipment Co ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-03-23
Anticipated expiration: 2030-06-24

Abstract

The utility model relates to the technical field of electromagnetic valves, in particular to an electromagnetic valve component device for improving the refrigeration energy efficiency of a low-temperature module unit; the temperature control device comprises a control unit (1), a first switch unit (D), a second switch unit (F), a first temperature sensing unit (A), a second temperature sensing unit (B) and a third temperature sensing unit (C); the first switch unit (D), the second switch unit (F), the first temperature sensing unit (A), the second temperature sensing unit (B) and the third temperature sensing unit (C) are electrically connected with the control unit (1) respectively; the three-way valve also comprises a four-way valve (4), a three-way pipe (E), a power supply, a first connecting copper pipe (G) and a second connecting copper pipe (H); the four-way valve (4) is used for switching a refrigeration and heating mode; the first connecting copper pipe (G) and the second connecting copper pipe (H) are used for connecting the first switch unit (D), the second switch unit (F) and the three-way pipe (E).

Description

Electromagnetic valve assembly device for improving refrigeration energy efficiency of low-temperature module unit

Technical Field

The utility model relates to a solenoid valve technical field especially relates to a solenoid valve subassembly device for improving low temperature module unit refrigeration efficiency.

Background

As is well known, in the process of refrigeration of a low-temperature modular unit, a refrigerant throttled by a main electronic expansion valve enters an economizer first, and then enters an evaporator for heat exchange after exiting from the economizer, and the refrigerant generates great pressure loss when passing through the economizer, so that the power consumption of a compressor is increased, and the refrigeration efficiency is reduced.

In order to solve the problem, generally, in a low-temperature module unit refrigeration mode, the reduction of unit refrigeration energy efficiency is avoided by increasing the evaporation superheat degree during refrigeration to reduce the opening degree of a main electronic expansion valve. However, this solution has the following drawbacks: when the degree of superheat of evaporation is high and the opening degree of the main electronic expansion valve is small, the refrigerating capacity of the unit cannot exert the best effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem, be to the technical insufficiency that exists, a solenoid valve subassembly device for improving low temperature module unit refrigeration efficiency is provided, adopt low temperature module unit under the heating mode during heating, the control unit judges according to the turn-off signal of cross valve and controls the first switch unit to open and the second switch unit to close, realize that the refrigerant liquid after the system condensation circulates after the heat transfer through the main and auxiliary sides of the economizer, in order to reach the purpose of increasing the refrigerant supercooling degree and providing the air injection enthalpy gain for the compressor, thereby improve the heating capacity of unit; when the low-temperature module unit is used for refrigeration, the control unit judges and controls the first switch unit to be closed and the second switch unit to be opened according to a closing signal of the four-way valve and signals fed back by the first temperature sensing unit, the second temperature sensing unit and the third temperature sensing unit so as to enable the refrigerant throttled by the main electronic expansion valve to directly enter the evaporator without passing through the economizer in the unit refrigeration mode, so that the pressure loss of the refrigerant is reduced, the power consumption of the compressor is reduced, and the energy efficiency is improved.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the temperature sensor comprises a control unit, a first switch unit, a second switch unit, a first temperature sensing unit, a second temperature sensing unit and a third temperature sensing unit; the first switch unit, the second switch unit, the first temperature sensing unit, the second temperature sensing unit and the third temperature sensing unit are respectively electrically connected with the control unit; the three-way valve also comprises a four-way valve, a three-way pipe, a power supply, a first connecting copper pipe and a second connecting copper pipe; the four-way valve is used for switching a refrigeration and heating mode; the first connecting copper pipe and the second connecting copper pipe are used for connecting the first switch unit, the second switch unit and the three-way pipe.

Further optimizing the technical scheme, the control unit is a controller for controlling the opening and closing of the first switch unit and the second switch unit and receiving feedback signals of all the temperature sensing units and sending control commands.

Further optimizing the technical scheme, the first switch unit and the second switch unit are on-off solenoid valves; the first switching unit is used for opening a refrigerant channel; the second switching unit is used for closing a refrigerant passage.

Further optimizing the technical scheme, the first temperature sensing unit is an ambient temperature sensor and is used for detecting ambient temperature; the second temperature sensing unit is an exhaust temperature sensor and is used for detecting the exhaust temperature of the compressor; the third temperature sensing unit is a water inlet temperature sensor and is used for detecting the water inlet temperature.

Compared with the prior art, the utility model has the advantages of it is following: 1. when the unit refrigerates, the refrigerant does not pass through the economizer, so that the pressure loss of the system is reduced, and the power consumption of the compressor can be reduced, so that the refrigerating energy efficiency of the unit is improved; 2. because the power consumption of the compressor is reduced, the degree of superheat of evaporation can be properly adjusted to be large, and therefore the refrigerating capacity of the unit can be improved.

Drawings

Fig. 1 is a schematic diagram of a solenoid valve assembly device for improving refrigeration energy efficiency of a low-temperature module unit.

In the figure: 1. a control unit; 2. a gas-liquid separator; 3. a compressor; 4. a four-way valve; 5. an economizer; 6. a shell and tube heat exchanger; 7. an auxiliary electronic expansion valve; 8. a solenoid valve assembly; 9. a main electronic expansion valve; 10. An outdoor heat exchanger; A. a temperature sensing unit; B. a temperature sensing unit; C. a temperature sensing unit; D. a switch unit; E. a three-way pipe; F. a switch unit; G. connecting a copper pipe; H. and connecting the copper pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The specific implementation mode is as follows: as shown in fig. 1, the temperature sensing device includes a control unit 1, a first switch unit D, a second switch unit F, a first temperature sensing unit a, a second temperature sensing unit B, and a third temperature sensing unit C; the first switch unit D, the second switch unit F, the first temperature sensing unit A, the second temperature sensing unit B and the third temperature sensing unit C are respectively electrically connected with the control unit 1; the three-way valve also comprises a four-way valve 4, a three-way pipe E, a power supply, a first connecting copper pipe G and a second connecting copper pipe H; the four-way valve 4 is used for switching a refrigeration and heating mode; the first connecting copper pipe G and the second connecting copper pipe H are used for connecting the first switch unit D, the second switch unit F and the three-way pipe E; the control unit 1 is a controller for controlling the opening and closing of the first switch unit D and the second switch unit F and receiving feedback signals of all the temperature sensing units and sending control commands; the first switch unit D and the second switch unit F are on-off electromagnetic valves; the first switching unit D is for opening a refrigerant passage; the second switching unit F is for closing a refrigerant passage; the first temperature sensing unit A is an ambient temperature sensor and is used for detecting ambient temperature; the second temperature sensing unit B is an exhaust temperature sensor and is used for detecting the exhaust temperature of the compressor 3; the third temperature sensing unit C is a water inlet temperature sensor and is used for detecting the water inlet temperature.

In use, as shown in fig. 1, the heating operation process is as follows: in the heating mode of the low-temperature module unit, the control unit 1 judges and controls the first switch unit D to be opened and the second switch unit F to be closed according to a disconnection signal of the four-way valve 4, so that the refrigerant liquid condensed by the system is circulated after heat exchange is carried out on the main side and the auxiliary side of the economizer 5, the purposes of increasing the supercooling degree of the refrigerant and providing enhanced vapor injection for the compressor 3 are achieved, and the heating capacity of the unit is improved;

in use, as shown in fig. 1, the refrigeration operation process: in the refrigeration mode of the low-temperature module unit, the control unit 1 judges and controls the first switch unit D to be closed and the second switch unit F to be opened according to the closing signal of the four-way valve 4 and the signals fed back by the first temperature sensing unit A, the second temperature sensing unit B and the third temperature sensing unit C, so that the refrigerant throttled by the main electronic expansion valve 9 directly enters the evaporator without passing through the economizer 5 in the refrigeration mode of the unit, the pressure loss of the refrigerant is reduced, and the power consumption of the compressor 3 is reduced, so that the energy efficiency is improved.

The utility model discloses a control mode comes automatic control through the controller, and the control circuit of controller can realize through the simple programming of technical staff in this field, belongs to the common general knowledge in this field, and the utility model discloses mainly be used for protecting the machinery setting, so the utility model discloses no longer explain control mode and circuit connection in detail.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. The utility model provides a solenoid valve subassembly device for improving low temperature module unit refrigeration efficiency which characterized in that: the temperature control device comprises a control unit (1), a first switch unit (D), a second switch unit (F), a first temperature sensing unit (A), a second temperature sensing unit (B) and a third temperature sensing unit (C); the first switch unit (D), the second switch unit (F), the first temperature sensing unit (A), the second temperature sensing unit (B) and the third temperature sensing unit (C) are electrically connected with the control unit (1) respectively; the three-way valve also comprises a four-way valve (4), a three-way pipe (E), a power supply, a first connecting copper pipe (G) and a second connecting copper pipe (H); the four-way valve (4) is used for switching a refrigeration and heating mode; the first connecting copper pipe (G) and the second connecting copper pipe (H) are used for connecting the first switch unit (D), the second switch unit (F) and the three-way pipe (E).

2. The electromagnetic valve assembly device for improving the refrigeration energy efficiency of the low-temperature modular unit as claimed in claim 1, wherein: the control unit (1) is a controller for controlling the opening and closing of the first switch unit (D) and the second switch unit (F) and receiving feedback signals of all the temperature sensing units and sending control commands.

3. The electromagnetic valve assembly device for improving the refrigeration energy efficiency of the low-temperature modular unit as claimed in claim 1, wherein: the first switch unit (D) and the second switch unit (F) are on-off electromagnetic valves; the first switching unit (D) is used for opening a refrigerant channel; the second switching unit (F) is used for closing a refrigerant passage.

4. The electromagnetic valve assembly device for improving the refrigeration energy efficiency of the low-temperature modular unit as claimed in claim 1, wherein: the first temperature sensing unit (A) is an ambient temperature sensor and is used for detecting ambient temperature; the second temperature sensing unit (B) is an exhaust temperature sensor and is used for detecting the exhaust temperature of the compressor (3); and the third temperature sensing unit (C) is an inlet water temperature sensor and is used for detecting the inlet water temperature.