Refrigerating system
By designing a refrigeration system using a dual-stage compressor for ammonia and a heat recovery heat exchanger, the problems of frequent ammonia safety accidents and high energy consumption of existing alternatives are solved, and efficient, safe and environmentally friendly refrigeration effects are achieved.
Patent Information
- Application Number
- CN202421854699.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-08-02
AI Technical Summary
Safety accidents of ammonia gas occur frequently in existing refrigeration systems, and existing alternatives such as CO2 refrigeration schemes and indirect refrigeration schemes have problems of high energy consumption and construction investment.
A refrigeration system including a refrigerator, heat exchanger, evaporator, cooler and circulation pump is designed. It adopts a dual-stage compressor for ammonia and a heat recovery heat exchanger. The refrigeration is reciprocated with the refrigerant refrigerant in the cooler to minimize the amount of ammonia.
It improves refrigeration efficiency, reduces ammonia usage and safety hazards, and achieves the goals of energy conservation and environmental protection.
Smart Images
Figure CN222837143U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of refrigeration, in particular to a refrigeration system. Background Art
[0002] Ammonia, as a refrigerant, can exist in liquid or gaseous form. Ammonia safety accidents in refrigeration systems occur frequently. There are two solutions to effectively solve the ammonia safety problem: one is the CO2 refrigeration solution, but this solution has high energy consumption and construction investment; the other is the indirect refrigeration solution using a refrigerant, but the energy consumption and comprehensive operating costs are higher than the direct refrigeration system, so a safe and energy-saving refrigeration system is needed. Utility Model Content
[0003] Therefore, one purpose of the present invention is to provide a refrigeration system to solve the problems mentioned in the background technology and overcome the deficiencies in the prior art.
[0004] In order to achieve the above-mentioned purpose, the utility model provides a refrigeration system, including a refrigerator, a heat exchanger, an evaporative cooler, an evaporator, a cooler and a circulating pump. The output end of the refrigerator is connected to the input end of the heat exchanger, the output end of the heat exchanger is connected to the input end of the evaporative cooler, the output end of the evaporative cooler is respectively connected to the input end of the refrigerator and the input end of the evaporator, and the refrigerant refrigerant in the evaporator after the temperature is reduced is refrigerated by a reciprocating cycle through the circulating pump and the coolant refrigerant in the cooler.
[0005] Preferably, the refrigerator is a two-stage compressor for ammonia.
[0006] In any of the above schemes, it is preferred that the refrigerator is a single-stage compressor for ammonia.
[0007] In any of the above schemes, it is preferred that the heat exchanger is a heat recovery heat exchanger.
[0008] In any of the above solutions, preferably, the heat exchanger is connected to the defrost pump.
[0009] In any of the above schemes, it is preferred that the coolant refrigerant adopts an environmentally friendly refrigerant.
[0010] Compared with the prior art, the advantages and beneficial effects of the utility model are:
[0011] 1. The utility model adopts a two-stage compressor for ammonia under low temperature conditions, which has higher refrigeration efficiency.
[0012] 2. It can minimize the amount of ammonia used, reducing its usage to about 1% of the original refrigeration system, which can minimize safety hazards. Ammonia has high refrigeration efficiency and has the advantages of energy saving and environmental protection.
[0013] 3. The utility model adds a heat recovery heat exchanger, which is more energy-saving.
[0014] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0016] Figure 1 The figure is a schematic diagram of a refrigeration system according to an embodiment of the utility model. DETAILED DESCRIPTION
[0017] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.
[0018] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0019] like Figure 1 As shown, a refrigeration system of an embodiment of the utility model includes a refrigerator, a heat exchanger, an evaporative cooler, an evaporator, a cooler and a circulating pump, and is characterized in that the output end of the refrigerator is connected to the input end of the heat exchanger, the output end of the heat exchanger is connected to the input end of the evaporative cooler, the output end of the evaporative cooler is respectively connected to the input end of the refrigerator and the input end of the evaporator, and the refrigerant refrigerant after the temperature is reduced in the evaporator is refrigerated by a reciprocating cycle between the refrigerant refrigerant in the cooler and the circulating pump.
[0020] The refrigerator compresses the ammonia and then transports it to the heat exchanger. The compressed ammonia exchanges heat with the refrigerant in the heat exchanger (the heat exchanger first heats the refrigerant), and then the cooled ammonia is transported to the evaporative cooler. The evaporative cooler cools the cooled ammonia into liquid ammonia, and then transports the liquid ammonia to the evaporator. The liquid ammonia exchanges heat with the refrigerant in the evaporator to cool the refrigerant. The evaporated ammonia returns to the refrigerator for recycling. At the same time, the refrigerant after cooling in the evaporator is refrigerated back and forth with the refrigerant in the cooler through a circulating pump.
[0021] Furthermore, the refrigerator is a two-stage compressor for ammonia or a single-stage compressor for ammonia. The system uses a two-stage compressor for ammonia under low temperature conditions, which has higher refrigeration efficiency.
[0022] Specifically, the heat exchanger is a heat recovery type heat exchanger. Adding a heat exchanger to the system makes the system more energy-efficient.
[0023] Specifically, the heat exchanger is connected to the defrost pump.
[0024] Specifically, the refrigerant used as the refrigerant is an environmentally friendly refrigerant, which is guaranteed to be non-flammable, non-explosive, non-toxic and harmless.
[0025] The utility model is a refrigeration system, the working principle is as follows:
[0026] The refrigerator compresses the ammonia and then transports it to the heat exchanger. The compressed ammonia exchanges heat with the refrigerant in the heat exchanger (the heat exchanger first heats the refrigerant), and then the cooled ammonia is transported to the evaporative cooler. The evaporative cooler cools the cooled ammonia into liquid ammonia, and then transports the liquid ammonia to the evaporator. The liquid ammonia exchanges heat with the refrigerant in the evaporator to cool the refrigerant. The evaporated ammonia returns to the refrigerator for recycling. At the same time, the cooled refrigerant in the evaporator is refrigerated back and forth with the refrigerant in the cooler through a circulating pump.
[0027] Compared with the prior art, the utility model has the following beneficial effects: the refrigeration efficiency of the utility model is higher and the energy consumption is lower.
[0028] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A refrigeration system, comprising a refrigerator, a heat exchanger, an evaporative cooler, an evaporator, a cooler and a circulating pump, characterized in that: The output end of the refrigerator is connected to the input end of the heat exchanger, the output end of the heat exchanger is connected to the input end of the evaporative cooling, the output end of the evaporative cooling is respectively connected to the input end of the refrigerator and the input end of the evaporator, and the refrigerant refrigerant after the temperature in the evaporator is cooled is refrigerated by reciprocating circulation of the refrigerant refrigerant in the cooler through the circulating pump.
2. A refrigeration system according to claim 1, characterized in that: The refrigerator is a two-stage compressor for ammonia.
3. A refrigeration system according to claim 1, characterized in that: The refrigerator is a single-stage compressor for ammonia.
4. A refrigeration system according to claim 1, characterized in that: The heat exchanger is a heat recovery heat exchanger.
5. A refrigeration system according to claim 1, characterized in that: The heat exchanger is connected with the defrost pump.
6. A refrigeration system according to claim 1, characterized in that: The refrigerant medium is an environmentally friendly refrigerant.